Portable hand-held saw with pivotable scoring unit

Abstract

The present invention relates to a portable hand-held saw (10) comprising a saw unit (11) having a sawing tool holder (14) for a saw tool (15) and a sawing drive motor (12) for driving the sawing tool holder (14), and a guide device (17). The guide device comprises a guide body (18) having a guide surface (19) for guiding the hand-held saw (10) along a working direction (AR) at a workpiece (W). The sawing tool holder (14) is movably supported on an upper surface (19A) of the guide body opposite to the guide surface (19) by means of a sawing depth adjustment bearing (16) between an upper depth adjustment position and a lower depth adjustment position (UT). When in the lower depth adjustment position, the sawing tool holder (14) is adjusted closer to the guide surface (19) than when in the upper depth adjustment position (OT). The portable hand-held saw machine comprises a creasing unit (31) arranged in front of the saw unit (11) in a guide device (17) in a working direction (AR) and having a creasing tool holder (34) for a creasing tool (35), in particular a creasing tool saw blade, and a creasing tool drive (32A) for driving the creasing tool holder (34), the creasing tool holder being separate from the sawing depth adjustment bearing (16) in or relative to the guide device (17). It is intended that, using the creasing device depth adjustment bearing (36), a creasing tool (35) arranged in the creasing device tool storage section (34) for cutting creasing lines (RI) in the workpiece (W) that are positioned in the working direction (AR) before the saw cut (SAE) to be made is movably supported between at least one active position (AP) in which the creasing tool (35) projects in front of the guide surface (19) and an inactive position (IP) in which the creasing tool (35) retracts behind the guide surface (19).

Description

[Technical field]

[0001] The present invention relates to a portable hand saw comprising a saw unit having a sawing tool receptacle for a saw tool, in particular a saw blade, and a sawing drive motor for driving the sawing tool receptacle, and a guide device, the guide device having a guide surface extending along a longitudinal axis for guiding the hand saw along a workpiece or a guide rail along a working direction, on an upper surface opposite to the guide surface the sawing tool receptacle, in particular the entire saw unit, is movably supported between an upper depth adjustment position and at least one lower depth adjustment position by means of a sawing depth adjustment bearing, and when in the at least one lower depth adjustment position the sawing tool receptacle is adjusted closer to the guide surface than when in the upper depth adjustment position, so that in the lower depth adjustment position the saw tool protrudes in front of the guide surface more in order to make saw cuts in the workpiece than when in the upper depth adjustment position. [Background technology]

[0002] A hand saw of this kind is described, for example, in EP 1 193 036. To make a sawing cut in a workpiece, the operator swivels the saw unit in the direction of the workpiece. In this case, a guide device in the form of a so-called saw table or guide plate is guided along the workpiece. The teeth of the saw blade used as the sawing tool cut into the workpiece from its underside and emerge from its upper side. In this case, it is quite possible that elements of the workpiece, such as, for example, shavings, are torn off at the edges next to the sawing cut, resulting in, for example, in an untidy cut.

[0003] Hand saws with a creasing unit are known, for example, from German Utility Model No. 73 24 551, German Patent Application Publication No. 38 00 935, German Utility Model No. 91 06 212, U.S. Pat. No. 5,287,786 and German Patent Application Publication No. 195 81 444 T1. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] European Patent No. 1193036 [Patent Document 2] German Utility Model No. 7324551 [Patent Document 3] DE 3800935 A1 [Patent Document 4] German Utility Model No. 9106212 [Patent Document 5] U.S. Patent No. 5,287,786 [Patent Document 6] German Patent Application Publication No. 19581444T1 Summary of the Invention

[0005] SUMMARY OF THE PRESENT EMBODIMENT It is therefore an object of the present invention to provide an improved portable handheld machine tool.

[0006] To achieve this goal, it is proposed that in a hand saw of the type mentioned at the beginning, the hand saw comprises a creasing unit having a creasing tool holder for a creasing tool, in particular a creasing tool saw blade, arranged in front of the saw unit in the guide device in the working direction, and a creasing tool drive for driving the creasing tool tool holder, the creasing tool holder being movably supported in the guide device or relative to the guide device, using a creasing tool depth adjustment bearing separate from the sawing depth adjustment bearing, between at least one active position in which the creasing tool arranged in the creasing tool tool holder projects in front of the guide surface for cutting creasing lines in the workpiece that are located in front of the saw cut to be made in the working direction, and an inactive position in which the creasing tool retracts behind the guide surface.

[0007] Thus, the scoring tool can be used to score the surface of the workpiece, in particular the top surface of the workpiece. The scores are aligned with the saw cuts that are subsequently made into the workpiece. The saw tool preferably cuts into the workpiece from its bottom surface. The saw tool exits the workpiece in the region of the scores, the risk of the top surface of the workpiece being torn by the saw tool being avoided or at least reduced by the scores.

[0008] The sawing depth adjustment bearing and the creasing device depth adjustment bearing are preferably arranged on the guide body at a longitudinal distance relative to the working direction.

[0009] The sawing depth adjustment bearing and the creasing device depth adjustment bearing are preferably arranged separately from one another on the guide body.

[0010] The sawing depth adjustment bearing and the creasing device depth adjustment bearing advantageously have no common bearing components.

[0011] Advantageously, there is a movement play between the saw unit and the scoring unit, so that the sawing tool receptacle and the scoring device tool receptacle can be adjusted independently of one another by means of respective depth adjustment bearings, for example to activate and deactivate the scoring tool or saw tool, to adjust the respective penetration depth of the scoring tool or saw tool into the workpiece, or the like.

[0012] However, it is also possible that the sawing tool receptacle and the creasing device tool receptacle are positively or kinetically coupled by an entrainment device, whereby the sawing tool receptacle and the creasing device tool receptacle perform a simultaneous movement. The positive or kinetic coupling can be deactivatable by a deactivation device.

[0013] The independent depth displacement of the sawing tool receptacle and the creasing tool receptacle relative to the guide surface or the workpiece allows kinematic freedom.

[0014] Naturally, in one working step, it is possible to first provide the score and immediately thereafter the actual saw cut in the workpiece with the hand saw. However, it is also possible, as is known per se, for the hand machine tool to be used only as a saw in a different working step, i.e. without the aid of a scoring device, or to provide only one score in the workpiece and no saw cuts. The score can be provided decoratively in the workpiece, for example in the form of engraving. Typically, however, the score is provided for a later saw cut. In particular, when using a hand saw with a guide rail that is temporarily and stationarily attached to the workpiece for processing the workpiece, it is possible, for example, to first score the workpiece and then to provide the saw cut. In that case, the hand machine tool is guided twice along the guide rail, first to provide the score, in which case the score tool is adjusted to the active position and the saw tool is inactive, the upper depth adjustment position of the saw unit is adjusted and then to provide the saw cut, in which case the score tool is in the inactive position but the sawing tool receptacle is in one of the lower depth adjustment positions.

[0015] It is preferred if the sawing depth adjustment bearing allows for several lower depth adjustment positions, so that the saw tool can penetrate into the workpiece at different depths and / or project to different extents in front of the guide surface. However, it is also without problem possible for the sawing depth adjustment bearing to allow only one fixedly adjustable lower depth adjustment position of the sawing tool receptacle.

[0016] Furthermore, the scoring unit can assume a number of active positions in which the scoring tool projects differently in front of the guide surface and thus penetrates the workpiece to different depths during the working operation, thereby making it possible to produce scores of different depths. Naturally, different score depths can be adjusted by exchanging the scoring tool which projects differently in front of the guide surface in the active positions.

[0017] It is preferred if the entire scoring unit and / or saw unit is adjustable at the respective depth adjustment bearing between different positions relative to the guide device, but it is also basically also possible for the saw unit or the scoring unit to be fixed in itself relative to the guide device and have a housing that is fixedly arranged on the guide device, for example with regard to the depth adjustment, and for only the respective tool receptacle, i.e. the sawing tool receptacle and / or the scoring device tool receptacle, to be adjustable between an upper depth adjustment position and at least one lower depth adjustment position or between an inactive position and at least one active position.

[0018] Advantageously, it is provided that the hand saw has an entrainment device for providing an entrainment connection between the sawing tool holder and the scoring device tool holder, by which the scoring device tool holder is entrained between an inactive position and at least one active position when the sawing tool holder is moved between the depth adjustment positions and / or between the upper depth adjustment position and at least one lower depth adjustment position, and the entrainment device has an operating body arranged on the saw unit for operating a controlled body arranged on the scoring unit, the operating body being capable of operating the controlled body and thus the entire scoring unit or the scoring device tool holder, for example from an inactive position to at least one active position and / or from the at least one active position to an inactive position.

[0019] Advantageously, the operating body of the saw unit and the operated body of the scoring unit are mechanically connected to each other or engage with each other. The operating body can be arranged stationary or movably on the saw unit and the operated body can be arranged stationary or movably on the scoring unit. The entrainment of the scoring device tool holder by the sawing tool holder can take place, for example, between two different lower depth positions. It is preferred that the entrainment takes place between an upper depth adjustment position and one or more lower depth adjustment positions. The operating body and the operated body can also be components of a transmission, a gear transmission, a wire rope transmission, a Bowden cable or the like.

[0020] However, an actuator in the form of a sensor for detecting the depth adjustment position of the sawing tool receptacle is also possible, the signal of which controls a motorized creasing tool adjustment drive for adjusting the creasing tool receptacle between the active and inactive positions, the creasing tool adjustment drive then representing the actuated body.

[0021] The entrainment device can only connect the tool receptacles to one another, for example, it is possible for the sawing tool receptacle to entrain the creasing tool receptacle by means of the entrainment device, however, it is preferred that the entrainment device allows for a complete kinematic connection between the saw unit and the creasing unit, so that the creasing unit is entrained by the saw unit when the saw unit is adjusted.

[0022] The entrainment device can operate in both directions or in one direction. For example, it is intended that the entrainment device entrains the scoring device tool receptacle, in particular only in a first direction of movement of the sawing tool receptacle, from the upper depth adjustment position to the at least one lower depth adjustment position, and / or in particular only in a second direction of movement from the at least one lower depth adjustment position to the upper depth adjustment position. Entrainment in the first direction of movement only, or in the second direction of movement only, or in both directions of movement can be intended between the sawing tool receptacle and the scoring device tool receptacle.

[0023] It is advantageous if the creasing device tool receptacle, and thus the creasing tool arranged therein, can be adjusted to one of the active positions without the saw tool penetrating the workpiece. Accordingly, a preferred embodiment provides that the entraining device connects the creasing device tool receptacle in which the creasing tool is arranged and the sawing tool receptacle in which the saw tool is arranged to one another in the creasing device activation section, so that the sawing tool receptacle can be adjusted to a lower depth adjustment position in which the saw tool does not project in front of the guide surface, in particular does not saw, and the creasing device tool receptacle can be adjusted to at least one active position in which the creasing tool projects in front of the guide surface to penetrate the workpiece by adjusting the creasing device tool receptacle to the lower depth adjustment position. Thus, in order to operate the creasing device tool receptacle in the direction of the active position, the creasing tool can already project in front of the guide surface, whereas the saw tool has already been adjusted in the direction of one of the lower depth adjustment positions or in the direction of the guide surface, but has not yet projected in front of the guide surface. In this way, for example, a score can be provided in the workpiece without the saw tool penetrating into the workpiece. The score-providing device activation part is, for example, the first operating part, i.e. the operating part in particular for adjusting the sawing tool receptacle from the upper depth adjustment position to at least one lower depth adjustment position.

[0024] The handheld saw has a scoring-only depth stop device, which has a stop member that can be adjusted between a stop position, in which the stop member strikes a counter stop in a lower depth adjustment position in which sawing is not intended or in a scoring depth adjustment position of the sawing tool receptacle, and a release position, in which the stop member can be moved alongside the counter stop, so that the sawing tool receptacle can be adjusted to a lower depth adjustment position in which the sawing tool protrudes in front of the guide surface. The stop member comprises, for example, a slide, a swivel body or the like, which can be adjusted between the stop position and the release position. The movable stop member is, for example, movably supported on a component connected with the sawing tool receptacle, for example a housing for a sawing drive motor, and cooperates with a fixed counter stop that is arranged in a fixed position, for example, on a cover hood for the sawing tool.

[0025] However, it is also advantageous if the saw blade or saw tool protrudes in front of the guide surface to different sizes and / or penetrates into the workpiece to different depths, whereby the sawing tool receptacle can be adjusted between a plurality of, for example two, depth adjustment positions, without this having any effect on the position of the creasing device tool receptacle and thus on the penetration depth of the creasing tool into the workpiece or on the distance by which the creasing tool protrudes in front of the guide surface. A preferred embodiment provides for the entrainment device to connect the sawing tool receptacle in which the saw tool is arranged and the creasing device tool receptacle in which the creasing tool is arranged to one another in the creasing device holder, so that the sawing tool receptacle can be adjusted between lower depth adjustment positions in which the saw tool protrudes in front of the guide surface to different sizes and / or the sawing tool receptacle is adjusted to different proximity to the guide device or guide surface, and the creasing device tool receptacle remains in substantially the same active position.

[0026] It is of course also possible that the creasing tool receptacle does not remain in exactly the same active position, i.e. the distance by which the creasing tool projects in front of the guide surface varies slightly by a predetermined amount in the creasing tool holder of the entraining device, which is preferably the second operating part when the creasing tool has already penetrated into the workpiece but should not penetrate further into the workpiece in order to make saw cuts with the saw tool.

[0027] The operating body and the operated body are, for example, components of an operating transmission or a coupling transmission. For example, a four-bar link or other similar operating mechanism or operating link assembly can be provided between the saw unit and the creasing unit. Furthermore, the entrainment device can comprise or consist of, for example, a lever transmission, a toothed transmission, a gear transmission, a multi-joint or a combination thereof. Furthermore, it is possible for the operating body and the operated body to be components of a wire rope transmission and / or a Bowden cable.

[0028] Thus, the entrainment device may comprise, for example, a Bowden cable, a wire rope transmission, a cam transmission, a cam disc, a linkage, a rack and pinion gear, or the like.

[0029] A link guide is preferably provided, the operating body and the operated body being components of the link guide. One component of the operating body and the operated body is a guide link and the other component is a link follower guided by the guide link. It is preferably provided that the operating body is formed as a guide link and the operated body is formed as a link follower. However, it is also possible that the operating body is a link follower guided along the operated body formed as a guide link. The guide link is preferably arranged in the saw unit. The link follower is preferably a component of the creasing unit.

[0030] The link follower preferably comprises a roller or an idler roller which rolls along the guide link, but it is also possible for the link follower to be or to comprise a sliding body.

[0031] Preferably, the link follower is spring loaded into contact with the guide link by a spring or spring assembly.

[0032] The link follower is preferably disposed on the arm.

[0033] Preferably, the guide link has two or more operating parts arranged one behind the other, which variously operate the creasing device tool holder or the entire creasing unit between an inactive position and at least one active position.

[0034] Advantageously, it is provided that the guide link has a creasing device activator part and a creasing device holder part. The creasing device activator part brings about an adjustment of the creasing device tool holder between an inactive position and at least one active position, for example when adjusting the sawing tool holder between the depth adjustment positions, and the creasing device holder brings about or causes a holding of the creasing device tool holder in a predefined active position, independent of the adjustment of the sawing tool holder between the depth adjustment positions. The creasing device holder part has, for example, a circular shape with a constant radius about a pivot axis, for example the depth adjustment axis about which the sawing tool holder, in particular the entire saw unit, is pivoted between the depth adjustment positions. The creasing device activator is capable of effecting an adjustment of the creasing device tool housing from an inactive position to at least one active position when the sawing tool housing is adjusted from the upper depth adjustment position to a first lower depth adjustment position, and the creasing device holder is capable of effecting a holding of the creasing device tool housing in at least one active position when the sawing tool housing is adjusted from the first lower depth adjustment position towards a second lower depth position in which the sawing tool housing is adjusted closer to the guide device or guide surface than when the sawing tool housing is in the first lower depth adjustment position and / or in which the saw tool projects further in front of the guide surface than when the sawing tool is in the first lower depth adjustment position. The arrangement of the sawing tool housing on the saw unit is preferably performed in such a way that the or a saw tool arranged in the sawing tool housing does not (yet) project in front of the guide surface in the creasing device activator, in particular is retracted behind the guide surface.

[0035] These kinematic connections between the above-mentioned operating parts, i.e. the creasing tool holder and the creasing tool operating part or between the sawing tool receptacle and the creasing tool tool receptacle, can be realized, for example, by the design of the coupling or operating gear, for example by means of corresponding free strokes, levers, articulated members or the like.

[0036] Advantageously, the entrainment device has a deactivation device for deactivating the entrainment connection between the sawing tool receptacle and the creasing device tool receptacle. In a deactivation position of the deactivation device, the creasing device tool receptacle remains in an inactive position when the sawing tool receptacle is moved between the depth adjustment positions, in particular between an upper depth adjustment position and at least one lower depth adjustment position, and in an activation position of the deactivation device, the creasing device tool receptacle is operated for adjustment between the inactive position and at least one active position. The entrainment device can thus be activated or deactivated by the deactivation device. For example, when the sawing tool receptacle is moved between the depth adjustment positions, the creasing device tool receptacle is mechanically entrained.

[0037] Advantageously, in order to deactivate the entrainment coupling, the deactivation device holds the actuated body disengaged from the actuating body and / or releases the coupling with the actuating body in the deactivation position, and releases the actuated body to engage with the actuating body and / or to couple with the actuating body in the activation position. For example, the link follower can be held disengaged from the guide link by the deactivation device in the deactivation position, or the guide link can be held at a distance from the link follower. However, the deactivation device can also be formed to engage and disengage in the deactivation position a gear of a transmission gear comprising, for example, the actuating body and the actuated body, or to activate and deactivate the free stroke of such a transmission gear in the deactivation position.

[0038] The deactivation device may comprise an electrical switching device, e.g. an electrical switch, which in the deactivation position may for example operate the creasing device adjustment drive in order to adjust the creasing device tool receptacle to the inactive position and / or may cut off the power supply to the creasing device adjustment drive in order to prevent adjustment of the creasing device tool receptacle to the active position.

[0039] It is envisaged that the hand saw has a creasing device depth adjustment means for adjusting the distance between the creasing device tool receptacle and the guide device or guide surface and / or the penetration depth of the creasing tool into the workpiece in at least one active position. Thus, in the active positions, different penetration depths of the creasing tool into the workpiece can be adjusted. Thereby, for example, the depth of the creasing to be made in the workpiece can be made adjustable.

[0040] Different penetration depths of the scoring tool into the workpiece can advantageously make it possible to adjust the width of the score that can be produced in the workpiece by the scoring tool. For example, the cutting or engagement area of ​​the scoring tool can be tapered, for example conically shaped, towards the free end area intended to be cut into the workpiece, whereby the width of the score can be adjusted by different penetration depths of the scoring tool into the workpiece.

[0041] The creasing device depth adjustment means comprises, for example, an adjustment screw, an adjustment transmission, a bevel transmission or the like. The creasing device depth adjustment means allows, for example, a depth adjustment such that in various active positions adjustable by the creasing device depth adjustment means, the creasing tool projects in front of the guide surface by 0-10 mm. A larger depth adjustment range of the creasing device depth adjustment means is advantageous, for example, for operation of a handheld saw with a guide rail. The guide rail has, for example, a height of about 3-5 mm between the lower surface on which the workpiece is placed and the upper surface for placing the handheld saw, so that in the case of a larger adjustment range of the creasing device depth adjustment means, a sufficient adjustment range is available for adjusting the creasing depth both in operation with and without a guide rail.

[0042] Advantageously, it is provided that an operating distance exists between the creasing device tool receptacle and an operating surface at which the operated body of the entraining device engages or comes into contact with the operating body of the entraining device, and that the creasing device depth adjustment means is formed to adjust the operating distance, whereby in at least one active position, by adjusting the operating distance, the distance between the creasing device tool receptacle and the guide device or guide surface and / or the penetration depth of the creasing tool into the workpiece can be adjusted or is adjusted.

[0043] Advantageously, it is provided that the scoring device depth adjustment means has an adjustment body, which is adjustable between at least two adjustment positions in order to adjust in at least one active position a variable distance between the scoring device tool receptacle and the guide device or guide surface and / or a penetration depth of the scoring tool into the workpiece, the adjustment body being an adjustment member for adjusting the deactivation device between an activation position and a deactivation position and / or being configured for adjusting the deactivation device between an activation position and a deactivation position, i.e. by means of the adjustment body the respective penetration depth of the scoring tool in the active position is adjustable and in addition the entrainment device is activatable and deactivatable.

[0044] The adjustment body, for example a slide or a rotatable body, is advantageously movable in a first degree of freedom of movement between an active position and an inactive position, for example displaceable and / or rotatable along a first axis.

[0045] The creasing tool depth adjustment means preferably comprises a depth adjustment member supported on an adjustment contour of the adjustment body, which is adjustable between at least two depth adjustment positions for adjusting in at least one active position the distance between the creasing tool tool receptacle and the guide device or guide surface and / or the penetration depth of the creasing tool into the workpiece.

[0046] The depth adjustment member may for example comprise a screw, an adjustment screw or other adjustment member that is adjustable between at least two positions. However, the depth adjustment member may also for example comprise an adjustment arm that is pivotable between two or more positions. Advantageously, the depth adjustment member is locked or lockable in the respective depth adjustment position.

[0047] The depth adjustment member has, for example, an operating surface which is supported by an adjustment contour of the adjustment body.

[0048] The depth adjustment member is, for example, arranged on the object to be operated or is movably coupled with the object to be operated.

[0049] However, the depth adjustment element can also be arranged, for example, on a support of the scoring unit, in which the actuated body and the adjustment body are movably supported.

[0050] Advantageously, the adjustment profile has adjustment parts assigned to activation positions and adjustment parts assigned to deactivation positions, which by adjustment, in particular by pivoting, of the adjustment body, differently manipulate the depth adjustment member in order to adjust the penetration depth of the scoring tool into the workpiece. For example, the adjustment parts deflect the depth adjustment member by different amounts. The adjustment parts are, for example, components of an eccentric profile or of a surface that is eccentric with respect to the rotation axis. By pivoting the adjustment member about the rotation axis, the depth adjustment member is supported at different adjustment parts of the eccentric profile.

[0051] It is possible that the operating surface of the operated body, which is arranged on the operated body or operatively connected to the operated body, is supported by the adjustment surface of the adjustment body. The operating surface can be provided, for example, on the depth adjustment member, which itself is also arranged on the operated body or operatively connected to the operated body. However, it is also possible that the operating surface is stationary with respect to the operated body. Advantageously, it is provided that the adjusting surface of the adjusting body can be engaged or disengaged with the operating surface of the operated body by adjusting the adjusting body, for example by rotation and / or linear displacement, between the adjustment positions assigned to the activation position and the deactivation position, or the operating surface of the operated body is adjusted to a position assigned to one of the active or inactive positions. For example, in the deactivation position, the operated body is no longer engaged with the adjusting surface of the adjusting body or is supported by the adjustment part of the adjustment contour so that the operated body is adjusted or adjustable to the inactive position, for example by a spring assembly acting on the operated body.

[0052] Advantageously, the adjustment surface of the adjustment body, preferably the entire adjustment body, is adjustable between at least two depth adjustment positions by means of the depth adjustment member, for example the depth adjustment member comprises a guide or a receiving part in which the adjustment body can be adjusted in a first degree of freedom of movement, the depth adjustment member being formed to adjust the adjustment body in a second degree of freedom of movement, preferably different from the first degree of freedom of movement.

[0053] An advantageous concept provides for the adjustment body to be adjustable between at least two adjustment positions in order to adjust for different penetration depths of the scoring tool into the workpiece, and to be adjustable, in particular displaceable and / or rotatable, between an inactive position, assigned to a deactivation position, in which the controlled body does not engage or come into contact with the controlled body, and an active position, assigned to an activation position, in which the controlled body comes into contact or engages with the controlled body, while remaining in the respective adjustment position.

[0054] The adjusting body, in particular the adjusting surface of the adjusting body, is advantageously adjustable in a second degree of freedom of movement, e.g. displaceable laterally relative to the first axis, eccentrically rotatable, etc., in order to adjust the distance between the tool receptacle of the creasing device and the guide device or guide surface in at least one active position and / or the penetration depth of the creasing tool into the workpiece, e.g. the operating distance between the tool receptacle of the creasing device and the operating surface of the operated body, and the adjusting surface maintains its position when the adjusting body is adjusted between the activated position and the deactivated position with respect to the first degree of freedom of movement.

[0055] Thus, the depth adjustment position of the creasing device tool holder or the creasing tool is maintained by the adjustment body, i.e. the distance between the creasing device tool holder and the guide device or guide surface is maintained when the engaging connection between the operating body and the operated body is released or created, i.e. deactivated or activated.

[0056] The creasing device depth adjustment means can also be called the creasing device depth adjustment device. The creasing device depth adjustment means or the creasing device depth adjustment device is advantageously provided with a creasing device depth stop for adjusting, in particular, a minimum distance between the creasing device tool receptacle and the guide device or the guide surface in at least one active position and / or in particular a maximum penetration depth of the creasing tool into the workpiece. The creasing device depth stop can be, for example, a fixed depth stop that is arranged stationarily on the guide device. However, it is preferred if the creasing device depth stop is adjustable between at least two stop positions in which the creasing device tool receptacle has different distances to the guide device or the guide surface and / or the creasing tool projects to different extents in front of the guide surface. The creasing device depth stop can have, for example, a stop element that is adjustable, for example, pivotable or displaceable, between two positions. It is preferred if the creasing device depth stop is steplessly adjustable. For example, an adjustment screw can be provided with which the depth stop can be adjusted. The head of the adjustment screw may form or provide a depth stop.

[0057] It is preferred if the hand saw has a sawing depth adjustment device for adjusting at least one of the lower depth adjustment positions of the sawing tool receptacle, which preferably has a depth stop holder, e.g. a depth stop guide, in which a depth adjustment stop against which the saw unit strikes when adjusted by means of the sawing depth adjustment bearing can be fixed in at least two depth stop positions.

[0058] The depth stop holder or depth stop guide extends, for example, in the shape of an arc. The depth stop guide comprises, for example, a guide link, a guide receiving portion, a guide groove or the like, in which the depth stop is adjustably, in particular steplessly and / or adjustably and / or displaceably supported in a number of locking positions. The depth stop holder can have a number of holding receiving portions, in which the depth stop can be fixed for adjusting different depth adjustment positions. However, the depth stop holder can also comprise or consist of a receiving groove which is additionally a depth stop guide.

[0059] The depth adjustment stop comprises, for example, a clamping screw which can be clamped to the depth stop holder or depth stop guide at the depth stop position to be adjusted, in particular to be steplessly adjusted or adjustable, respectively. It is possible for the depth stop to lock onto the depth stop holder or depth stop guide without any problem.

[0060] A preferred embodiment provides that the guide link and the depth stop holder, e.g. the depth stop guide, have arc-like sections arranged side by side. For example, the aforementioned creasing device holder and the depth stop guide, in which the depth stop is guided, can have arc-like sections arranged side by side. For example, the two sections extend in an arc, in particular in a circular arc, around the pivot axis of the sawing depth adjustment bearing. This allows a particularly space-saving arrangement.

[0061] Advantageously, the sawing depth adjustment bearing is a swivel bearing, which supports the sawing tool receptacle so that it can be swiveled about a depth adjustment axis. Advantageously, the creasing device depth adjustment bearing is also a swivel bearing, which supports the creasing device tool receptacle so that it can be swiveled about a depth adjustment axis. Naturally, instead of a swivel bearing, for example a plain bearing or a swivel-sliding bearing can be provided as the sawing depth adjustment bearing and / or the creasing device depth adjustment bearing in order to adjust different depth adjustment positions of the sawing tool receptacle or the creasing device tool receptacle. At least one of the pivot axes, preferably two of the pivot axes, preferably run parallel to a rotation axis about which the creasing device tool receptacle and / or the sawing tool receptacle are rotatably supported.

[0062] It is advantageous if the depth adjustment axis of the creasing tool depth adjustment bearing formed as a pivot axis is arranged, relative to the working direction, between the creasing tool tool receptacle and the sawing tool receptacle.

[0063] This allows for a particularly space-saving arrangement. It is particularly preferred if the pivot axis of the creasing device depth adjustment bearing passes through the saw tool when it is mounted in the sawing tool holder, for example through a flat surface of the saw tool. With respect to the longitudinal axis of the guide device running parallel to the working direction, the pivot axis of the creasing device depth adjustment bearing is arranged between the tool holders, preferably in a longitudinal position in which the saw tool is also located.

[0064] It is preferably provided that the sawing depth adjustment bearing is arranged in the guide device in the working direction behind the sawing tool receptacle. For example, the hand saw is designed as a plunge saw. However, if it is designed as a pendulum saw, it would also be possible for the sawing depth adjustment bearing to be arranged in the guide device in the working direction in front of the sawing tool receptacle.

[0065] It is also advantageous if the creasing device depth adjustment bearing is arranged in the guide device behind the creasing device tool receptacle in the working direction, however, it would also be possible without problem to arrange the creasing device depth adjustment bearing, for example a swivel bearing, in front of the creasing tool or the creasing device tool receptacle in the working direction.

[0066] A particularly compact and ergonomic embodiment, which is also shown in the drawings, is the following measure: It is preferred if the scorer depth adjustment bearing is arranged in the guide device in the working direction between the scorer tool receptacle and the sawing tool receptacle, in particular so that the scorer tool can, so to speak, be the foremost component of the hand saw in the working direction, so that the operator can see the incision or penetration of the scorer tool into the workpiece, e.g. for the precise guidance of the hand saw along the workpiece.

[0067] It is preferred if the sawing tool receptacle, preferably the entire saw unit, and / or the creasing device tool receptacle, advantageously the entire creasing device unit, is supported in the guide device by means of a bevel-cutting bearing assembly so as to be pivotable about a bevel-cutting axis which runs parallel to the working direction and / or parallel to a longitudinal axis of the guide device which runs parallel to the working direction. It is possible that the sawing tool receptacle and the creasing device tool receptacle are pivotable relative to each other about the bevel-cutting axis. However, it is also possible that the two tool receptacles are connected or coupled to each other non-rotatably or non-pivotably with respect to the bevel-cutting axis and are pivotable together about the bevel-cutting axis. For example, both depth-adjusting bearings are arranged on the same support.

[0068] Another embodiment can provide for the sawing tool receptacle, preferably the entire saw unit, to be mounted in the guide device so as to be pivotable about the abovementioned bevel-cutting axis or a bevel-cutting axis, but for the creasing tool tool receptacle, preferably the entire creasing unit, to be arranged in a fixed position in relation to the bevel-cutting axis in the guide device, so that bevel-cutting incisions can still be made by means of the saw tool or saw unit.

[0069] It is advantageous if the sawing depth adjustment bearing and / or the creasing device depth adjustment bearing are arranged on a support, in particular formed as a cover hood and / or a protective housing, which is arranged between the front bevel cutting bearing in the working direction and the rear bevel cutting bearing in the working direction of the bevel cutting bearing assembly. The support or the cover hood forms, for example, a bearing base for the creasing device depth adjustment bearing and / or the sawing depth adjustment bearing. It is advantageous if both depth adjustment bearings are arranged on the support, so that the pivot position or the angular position of the depth adjustment bearing relative to the bevel cutting axis can be adjusted simultaneously by pivoting the support relative to the guide device. Advantageously, this results in a highly precise and / or robust system, for example when machining a workpiece.

[0070] For adjusting the distance between the creasing device tool receptacle and the guide device or guide surface and / or the penetration depth of the creasing tool into the workpiece in at least one active position and / or for activating and deactivating the entrainment connection between the sawing tool receptacle and the creasing device tool receptacle, it is advantageous if an actuated body is mounted so as to be pivotable about a depth adjustment axis of the creasing device depth adjustment bearing. The actuated body, for example the already mentioned link follower, is arranged, for example, on an actuated body arm which projects in front of the depth adjustment axis and is mounted so as to be pivotable about the depth adjustment axis.

[0071] Advantageously, the object is arranged on a object arm, which projects in front of the depth adjustment axis of the creasing device depth adjustment bearing and which can be brought by an adjustment body, e.g. an adjustment body of the creasing device depth adjustment means, into at least two different pivot positions relative to the depth adjustment axis, in which the object assumes different angular positions relative to the depth adjustment axis. By means of the different angular positions of the object relative to the depth adjustment axis, the distance between the creasing device tool receptacle and the guide device or the guide surface and / or the distance by which the creasing tool projects in front of the guide surface can be adjusted. In the different angular positions of the object relative to the depth adjustment axis, the object has, for example, different distances relative to the creasing device tool receptacle.

[0072] The control body arm is preferably spring-loaded away from the control body by a spring assembly, for example the control body arm can be spring-loaded towards the control body by a spring assembly to create and / or maintain contact between the control body and the control body.

[0073] Advantageously, an operating surface is arranged on the operated body arm, in particular on an operating arm or an adjustment lever which projects at an angle from the operated body arm, and with which an adjustment body cooperates, by means of which different angular positions of the operated body can be adjusted relative to the depth adjustment axis and / or which can create and / or release a driving connection between the sawing tool receptacle and the creasing tool tool receptacle. The adjustment body is, for example, an adjustment body already mentioned, which can be engaged with the operating surface or operating arm to create the driving connection and disengaged to release the driving connection, for example by axial displacement along the displacement axis. Furthermore, in order to adjust the angular position of the operated body relative to the depth adjustment axis, the adjustment body or the adjustment contour arranged on the adjustment body can be adjustable transversely to the displacement axis, for example eccentrically rotatable, displaceable, etc.

[0074] It is advantageous if the hand saw has a lateral adjustment device for adjusting the lateral distance of the sawing tool receptacle and / or the scoring device tool receptacle transverse to a longitudinal axis parallel to the working direction, whereby by adjusting the lateral distance of the sawing tool receptacle relative to the longitudinal axis and / or by adjusting the lateral distance of the scoring device tool receptacle, the scoring tool and the saw tool can be brought into a position in which they are aligned with one another relative to the longitudinal axis, so that the score produced by the scoring tool in the workpiece is aligned with the saw cut which follows, so to speak, in the working direction.

[0075] If the lateral distance of the sawing tool receptacle is fixed relative to the longitudinal axis, it is preferred that the lateral distance of the creasing tool tool receptacle is adjustable.

[0076] The lateral adjustment device allows for example a lateral adjustment in a range of at least 2 mm, preferably at least 3 mm. The range of lateral adjustment may be limited, for example to a maximum of 8 mm, preferably to a maximum of 4 mm.

[0077] The lateral adjustment range of the lateral adjustment device is preferably bidirectional with respect to a normal distance that the sawing tool receptacle has to the longitudinal axis, the normal distance being an initial position, in particular an intermediate position, of the lateral adjustment range, whereby the creasing device tool receptacles are adjustable in opposite directions away from the initial position. For example, the lateral adjustment range can allow a lateral adjustment of the creasing device tool receptacle, and thus of the creasing tool arranged in the creasing device tool receptacle, of 2-4 mm, respectively, starting from the initial or intermediate position.

[0078] It is advantageous if the lateral adjustment device and / or the manually operable, in particular rotatable, operating element of the lateral adjustment device is arranged on the creasing device depth adjustment bearing and / or is passed through by the depth adjustment shaft of the creasing device depth adjustment bearing, which allows a particularly intuitive operation of the lateral adjustment device.

[0079] The lateral adjustment device preferably comprises a threaded member which extends along the depth adjustment axis of the creasing device depth adjustment bearing and / or the respective rotational position of the depth adjustment axis is fixed by a locking assembly.

[0080] The lateral adjustment device preferably comprises a bearing body, in particular a bearing sleeve, the longitudinal position of which can be adjusted relative to a depth adjustment axis of the creasing device depth adjustment bearing, for example by means of the above-mentioned screw member. The creasing unit is supported in the bearing body so as to be pivotable about the depth adjustment axis.

[0081] For example, if the hand saw is configured as a pendulum saw, it is basically possible for the operator to manually operate the saw unit or at least the sawing tool receptacle not only in the direction of the lower depth adjustment position but also in the opposite direction towards the upper adjustment position. However, spring biasing is preferred, i.e. it is advantageously provided that the sawing tool receptacle, in particular the saw unit, is loaded into the upper depth adjustment position by the saw unit spring assembly, whereby the operator operates the sawing tool receptacle, in particular the saw unit, against the force of the saw unit spring assembly in the direction of the lower depth adjustment position in order to make a saw cut in the workpiece.

[0082] In particular, if a kinematic or force connection is provided between the saw unit and the creasing unit, then for example a spring action on the creasing unit can be omitted, for example the already mentioned saw unit spring assembly can urge the saw unit directly and the creasing unit connected to it indirectly towards the inactive position.

[0083] However, it is preferably provided that the creasing device tool receptacle, in particular the creasing unit, is biased to an inactive position and / or to at least one active position by a creasing unit spring assembly, which is separate from the saw unit spring assembly or the spring assembly which loads the saw unit or the sawing tool receptacle to an upper depth adjustment position. The spring biasing in the direction of the inactive position can have a higher spring force than the spring biasing in the active position. In particular, it is preferred to bias only to the inactive position and not to the active position. That is to say, the creasing unit spring assembly and the saw unit spring assembly preferably act in the same way, such that the saw tool and the creasing tool are loaded in a position where they are retracted behind the guide surface. That is to say, when the operator wants to saw the workpiece with a leading creasing in the working direction, he actively influences the saw unit in the direction of at least one lower depth adjustment position or the creasing unit in the direction of at least one active position.

[0084] The biasing of the scoring unit spring assembly in the direction of the active position can be advantageous, for example, in connection with a guiding device which accompanies the scoring unit in the sense that upon a lifting movement of the scoring tool from the workpiece, the scoring tool is lifted from the workpiece.

[0085] It is advantageous if the hand saw has a creasing device adjustment drive for adjusting the creasing device tool receptacle between an active position and an inactive position. The creasing device adjustment drive can be constituted, for example, by a driving device or the driving device can form part of the creasing device adjustment drive. However, it is also possible for the creasing device adjustment drive to have an adjustment motor, for example an electric, pneumatic or hydraulic adjustment motor.

[0086] It is preferably provided that the hand saw has an operating element, in particular an operating handgrip, which can be held by the operator and is arranged on the saw unit in order to adjust the creasing device tool receptacle between an active position and an inactive position. Advantageously, it is provided that the operating element, in particular the operating handgrip, is shaped and provided for operating the sawing tool receptacle between an upper depth adjustment position and at least one lower depth adjustment position. For example, the entrainment device can transmit the force applied to the operating element or the operating handgrip to the creasing device tool receptacle, in particular to the entire creasing unit. It is advantageous if the guide device is provided with a depth stop for the creasing device tool receptacle in the active position.

[0087] It is also possible for the operating element to have an electric sensor or switch for the creasing device adjustment drive arranged on the saw unit, which can detect, for example, the respective depth adjustment position of the sawing tool receptacle in order to control an adjustment motor of the creasing device adjustment drive, whereby the adjustment motor is controlled simultaneously with the respective height adjustment of the sawing tool receptacle.

[0088] The operating element can also comprise an actuator that is movably supported on the saw unit and can be manually operated by the operator, which actuator is movably coupled to a force transmission element, in particular a Bowden cable, for transmitting a force to the creasing device tool receptacle for adjusting the creasing device tool receptacle between an inactive position and at least one active position. The actuator, for example a handgrip, lever or the like, is arranged, for example, on the saw unit housing of the saw unit, on the handgrip of the saw unit or the like and can be operated by the operator, in particular by holding or grasping the handgrip. The force transmission element acts, for example, on a pneumatic drive or the like. The force transmission element can also be, for example, an air hose.

[0089] An embodiment of the present invention may provide for the sawing drive motor to drive the creasing device tool holder by means of a transmission, e.g. a belt transmission, a gear transmission or the like. The transmission may be or may comprise, for example, a reducer. However, it is advantageous if the creasing unit has a creasing device drive motor separate from the sawing drive motor.

[0090] Expediently, the creasing device drive motor can be switched on by an electric switch.

[0091] The operating element arranged on the saw unit can, for example, comprise an electric switch for switching the creasing device drive motor on and off. This switch can be provided only for switching the creasing device drive motor on and off. However, it is advantageously provided that a switch for switching the sawing drive motor on and off is arranged on the saw unit, by means of which the creasing device drive motor can be switched on and off.

[0092] The creasing device drive motor switch can be a separate, independently operable switch from the sawing drive motor switch. For example, only the creasing device drive motor can be switched on and off by such a switch, without the sawing drive motor being switched on or off at the same time. It is also possible that the sawing drive motor switch and the creasing device drive motor switch are functionally connected in series, whereby the creasing device drive motor is powered only if both switches are in the on position.

[0093] Advantageously, the hand saw has a switch for switching the creasing device drive motor on and off, which switch is operable by a deactivation device, in particular by the above-mentioned adjustment body of the deactivation device, such that the deactivation device or the adjustment body switches the creasing device drive motor off in the deactivation position and switches it on in the activation position or releases it by means of another switch, for example a switch for switching the sawing drive motor, for switching it on. When the deactivation device takes up the deactivation position, the creasing device drive motor is switched off and / or cannot be switched on.

[0094] The following measures are an independent invention in themselves, which may also be an advantageous embodiment of the invention. In this case, it is provided that the hand saw has a flexible electrical connection between the saw unit and the scoring unit for supplying the latter with electrical energy. The flexible connection can extend openly between the scoring unit and the saw unit.

[0095] A preferred measure provides for the connection line to have a coupling part connected to the saw unit and a coupling part connected to the creasing unit, which coupling parts are connected to one another by a coupling part and have a greater distance to the sawing tool receptacle and the creasing tool receptacle than the coupling part, so that the connection line extends around an open space of the hand-held sawing machine on the side opposite the tool receptacle. For example, the operating elements of the hand-held machine tool, in particular the operating elements of the creasing unit, can be accessed by the operator through the open space. The connection line can be formed as a flexible loop. The connection part preferably extends in an arc or loop shape. The connection part preferably extends transversely to the longitudinal axis of the guide device, which preferably extends in the working direction. At least one of the coupling parts, preferably both coupling parts, preferably extend linearly at the transition to the saw unit or the creasing unit.

[0096] The scoring tool and / or the saw tool are preferably configured as saw blades, in particular circular saw blades. In principle, however, it would also be possible for the saw tool to be another saw blade, for example of a jigsaw or similar non-circular type. Furthermore, the scoring tool can also comprise or consist of, for example, a milling head or milling tool.

[0097] The saw tool and the scoring tool are preferably formed as saw blades, in which case an advantageous embodiment provides for the ratio of the outer diameter of the saw tool to the outer diameter of the sawing drive motor to be greater than the ratio of the outer diameter of the scoring tool to the outer diameter of the scoring device drive motor, in particular at least 1.5 times greater, preferably 2 times greater, more preferably at least 2.5 times greater.

[0098] A hand saw is a saw that is manually guided along the workpiece. The machine can be freely guided over the workpiece, i.e. moved without guide rails. However, it is preferably moved by means of guide rails. Preferably, the hand machine is a plunge saw and / or does not have a protective cover for the parts of the sawing tool and / or the scoring tool that protrude freely in front of the guide surface.

[0099] The saw unit and the creasing unit are arranged on the upper side of the guide device opposite the guide surface. The guide device comprises, for example, a so-called saw table. The guide device or guide body preferably comprises a plate body on one side of which the guide surface is arranged and on the opposite side or on top of which the saw unit and the creasing unit are arranged. In the guide surface, guide receptacles, for example longitudinal grooves or the like, for guide ribs or guide projections of the guide rail are preferably arranged.

[0100] The sawing drive motor and / or the creasing device drive motor are preferably electric motors, in particular universal motors or brushless electronically commutated motors or DC motors. Different types of motors can be used as the sawing drive motor and the creasing device drive motor, for example an electronically commutated motor can be used as the sawing drive motor and a DC motor can be used as the creasing device drive motor.

[0101] An embodiment of the present invention will now be described with reference to the drawings. [Brief description of the drawings]

[0102] [Figure 1] FIG. 1 is a front perspective view of a handheld saw with a saw unit and a creasing unit in the upper depth adjustment position. [Diagram 2] FIG. 2 is a view of the hand saw according to FIG. 1 in the lower depth adjustment position. [Diagram 3] FIG. 3 is a rear oblique view of the hand saw according to FIGS. 1 and 2 on a guide rail in the bevel cutting position. [Figure 4] FIG. 4 is a detail view according to FIG. 3 from the front of the lower part of the hand saw and the guide rail, in which the guide body and the guide rail of the hand tool engage with each other with an additional rear engagement contour. [Diagram 5] FIG. 5 shows a variant of the hand saw according to the previous figure, with a scoring unit which can be pivoted about the bevel-cutting axis separately from the saw unit, or which is stationary relative to the bevel-cutting axis. [Figure 6] FIG. 6 is a side view of the hand saw according to FIG. 1 with the protective housing open and with its saw unit in the upper depth adjustment position, approximately in the viewing direction BR1. [Figure 7] FIG. 7 is a view of the right part of the view according to FIG. 6, with the saw unit adjusted to the lowest depth adjustment position, but the scoring unit inactive. [Figure 8]FIG. 8 shows a view according to FIGS. 6 and 7 with the saw unit adjusted to the lowest depth adjustment position and the creasing unit adjusted to the active position. [Figure 9] FIG. 9 is a view according to FIG. 8 with the saw unit adjusted to the scoring-only depth adjustment position and the scoring unit adjusted to the active position. [Figure 10] FIG. 10 is a view of the scoring-only depth stop device in the release position allowing adjustment of the saw unit according to FIG. 8 as detail D2 of the hand-held saw, which is additionally shown in its entirety in FIG. 10 from obliquely behind. [Figure 11] FIG. 11 is a view of the scoring-only depth stop arrangement according to FIG. 10 in a stop position corresponding to the scoring-only depth adjustment position of the saw unit. [Figure 12] FIG. 12 is a detailed view of the scoring unit from an oblique front view, approximately taken from the line of sight of FIG. [Figure 13] FIG. 13 is a view of the scoring unit according to FIG. 12 in the activated position, from obliquely behind, which corresponds approximately to the line of sight of FIG. [Figure 14] FIG. 14 is a view of the creasing unit according to FIG. 13, with the creasing unit adjusted to the deactivated position. [Figure 15] FIG. 15 is a cross-sectional view of the scoring unit according to FIG. 13 approximately along the section line AA through the deactivation device. [Figure 16] FIG. 16 is a front view of the scoring unit of the hand saw of FIG. 1. FIG. [Figure 17] FIG. 17 is a partial cross-sectional view of the scoring unit according to FIG. 16 approximately along the section line BB additionally showing a cross-section of the entire hand saw with a small view showing the detail D3 shown in FIG. [Figure 18] FIG. 18 is a side view of the hand saw according to the previous figure with the protective housing open, roughly corresponding to the view according to FIG. 6. [Figure 19] FIG. 19 is a perspective view of the cover of the protective housing, approximately in accordance with FIG. 1, from three-quarters. [Figure 20]FIG. 20 is a view similar to FIG. 18 of a variant of the hand saw. [Figure 21] FIG. 21 is a side view of another variant of the hand saw, corresponding generally to the viewing direction BR1 of FIG. [Figure 22] FIG. 22 is an oblique front view of the hand saw according to the previous figures, with the protective housing closed with the cover according to FIG. [Figure 23] FIG. 23 is a view of the front section D4 of the view according to FIG. 22 with the cover element adjusted to the open position. [Figure 24] FIG. 24 shows a view according to FIG. 23 with the cover element adjusted to the covering position. [Diagram 25] FIG. 25 is a view of a partial area of ​​the cover according to FIG. 19, with the cover elements adjusted to the open position, corresponding to the partial view according to FIG. [Figure 26] FIG. 26 shows a view according to FIG. 25 with the cover element adjusted to the covering position. [Figure 27] FIG. 27 is a rear view of the hand saw according to FIG. 1 showing the creasing device handgrip assembly. [Figure 28] FIG. 28 is a front oblique view of the hand saw of FIG. [Figure 29] FIG. 29 shows a variant of the hand saw according to FIG. 27 with an additional creasing device handgrip body. [Diagram 30] FIG. 30 is a front oblique view of the hand saw of FIG. [Diagram 31] FIG. 31 is a side view of the hand saw according to the previous figure, with the safety in the safe position. [Diagram 32] FIG. 32 is a perspective view of the safety device of the hand saw according to FIG. [Diagram 33] FIG. 33 is a schematic side view of the hand saw according to the previous figure. [Diagram 34] FIG. 34 shows a variant of the hand saw according to FIG. 33 with an alternative entrainment device. [Diagram 35] FIG. 35 is a schematic diagram of a hand-held saw with a manually and separately operable creasing unit. [Diagram 36] FIG. 36 is a diagram of a hand-held saw with a motorized adjustable scoring unit. [Figure 37] FIG. 37 is a diagram of a hand-held saw with a creasing unit that is manually operable via a power transmission element. [Figure 38] FIG. 38 is a perspective view of a variant of the scoring unit with an alternative scoring device depth adjustment means and an alternative deactivation device in a deactivated position. [Figure 39] FIG. 39 shows a view of the scoring unit according to FIG. 38 in the activated position. [Diagram 40] FIG. 40 is a cross-sectional view taken along line CC in FIG. 39, passing through the creasing unit. [Diagram 41] FIG. 41 is an exploded view of the creasing unit according to FIGS. [Diagram 42] FIG. 42 is a diagram of a scoring tool with four scoring teeth. [Diagram 43] FIG. 43 is a diagram of a system with a scoring tool and a sawing tool according to FIG. 42 cut along the cutting line DD. [Diagram 44] FIG. 44 is a view of detail D5 from FIG. [Diagram 45] FIG. 45 is a perspective view of the scoring tool according to FIG. 42 in an oblique view. [Diagram 46] FIG. 46 is a diagram of a scoring tool with three scoring teeth. [Figure 47] FIG. 47 shows a scoring tool with one score tooth or two score teeth. [Figure 48] FIG. 48 shows a view of another embodiment of scoring teeth of a scoring tool, roughly corresponding to detail D5 according to FIG. 44, in which the minor cutting edges are at an angle to each other. [Figure 49] FIG. 49 is a diagram of an alternative embodiment of a score tooth substantially in the form of a score tooth according to FIG. 48 but having a concave minor cutting edge. [Figure 50] FIG. 50 is a diagram of another embodiment of a serration tooth having a convex minor cutting edge. [Figure 51] FIG. 51 is a side view of the saw tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0103] The hand saw 10 is formed, for example, in the form of a plunge saw, but may have, for example, a pendulum hood or other such protective covering and thus may be a pendulum saw.

[0104] The hand saw 10 comprises a saw unit 11 with a sawing drive motor 12, which is accommodated in a motor housing part 28 of the saw unit housing 13. The sawing drive motor 12 drives a sawing tool receptacle 14, either directly or via a transmission, not visible in the drawings, in which a sawing tool 15 can be or is arranged. To hold the sawing tool 15 in the sawing tool receptacle 14, for example a retaining screw or a retaining element 14A is used.

[0105] By means of the sawing depth adjustment bearing 16, the entire saw unit 11 can be swiveled about a depth adjustment axis TS relative to a guide device 17 on which the saw unit 11 is arranged. By means of such a swiveling movement the saw tool 15 can be adjusted between an upper depth adjustment position OT and a number of lower depth adjustment positions, for example a lowest depth adjustment position UT according to Fig. 2 or Fig. 8. In the lower depth adjustment position UT the saw tool 15 projects in front of a guide surface 19 of a guide body 18 of the guide device 17, for example for making a sawing cut into a workpiece W.

[0106] By means of the guide surface 19, the guide body 18, and thus the entire hand saw 10, can be guided in a working direction AR, for example directly along the upper workpiece surface WO of the workpiece W. The guide surface 19 extends with a longitudinal axis L parallel to the working direction AR.

[0107] However, the guide body 18 can also be guided, for example, along an upper surface or guide surface 202 of a guide rail 200, the lower surface 201 of which can rest on the workpiece W. This allows particularly precise and straight saw cuts to be made in the workpiece W.

[0108] The guide rail 200 has an elongated shape with longitudinal narrow surfaces 203, 204 extending along a longitudinal axis LS of the guide rail 200 along which the working direction AR is oriented, between a rear end face 207 in the working direction AR and a front end face 208 in the working direction AR. The saw tool 15 can pass beside this longitudinal narrow surface 204 and enter the workpiece W.

[0109] Furthermore, a counter guide contour 206 in the form of a longitudinal rib and optionally a receiving groove 205 extends parallel to the longitudinal axis LS. The receiving groove 205 serves, for example, to receive an auxiliary means, a clamping device for clamping the guide rail 200 or the like. The longitudinal rib or guide contour 206 protrudes upwards in front of the guide surface 202 and serves to engage a guide contour 216 in the guide surface 19 of the guide body 18. The guide contour 216 is formed, for example, as an elongated receiving groove 217 extending along the longitudinal axis L of the guide body 18.

[0110] An alternative embodiment of the guide rail 200 is shown, for example, in the form of the guide rail 200A. The guide rail 200A has a rear engagement protrusion 210 which projects in front of the guide surface 202 and from which at least one rear engagement leg 211, preferably two rear engagement legs 211 opposite each other, project laterally laterally, forming, for example, a T-shaped structure. The rear engagement leg 211 engages in an accommodation 220, optionally provided in the guide surface 19, which has a rear engagement accommodation 221. For example, the support leg 222 projects in the plane of the guide surface 19 in the direction of the accommodation 220 which can be engaged from the rear by the rear engagement leg 211 which engages in the rear engagement accommodation 221. Thereby, the guide device 17 is held on the guide rail 200A in a force direction perpendicular to the guide surface 18, but is nevertheless displaceable in the working direction AR along the guide rail 200A. The receiving portion 220 and the rear engagement protrusion 210 have an elongated shape and extend in the direction of the longitudinal axis L or LS.

[0111] The guide body has a longitudinal side, hereinafter referred to as the tool longitudinal side 18A, on which the saw tool 15 is arranged, and a so-called tool-free longitudinal side 18B which extends parallel to the longitudinal side 18A and also extends between the front and rear end faces 18C, 18D of the guide body 18.

[0112] The saw unit 11 is arranged on the upper surface 19A of the guide device 17 or guide body 18, opposite the guide surface 19. The guide body 18 is, for example, formed by a guide plate or is plate-like. Whereas the guide surface 19 is substantially planar, with the exception of the receiving contours arranged on this guide surface, in particular the receiving part 220 and / or the guide contour 216, for example, the upper surface 19A can support functional components and / or be reinforced by a rib structure. In particular, it is possible for an operator to grip and / or manipulate the upper surface 19A, in particular in the region of the handgrip portion 18F near the front end surface 18C, in order to guide the hand saw 10, for example to urge the front part of the guide body 18 in the direction of the workpiece W or the guide rail 200 in a force direction perpendicular to the guide surface 19. The handgrip portion 18F can, for example, be planar or can include a planar surface. Advantageously, the handgrip portion 18F has a grip recess. However, the hand grip portion 18F may also include a grip element 218, such as, for example, a rod-like or toggle-like hand grip.

[0113] The saw unit 11 as a whole is biased towards the upper depth adjustment position OT by means of a saw unit spring assembly 20. The saw unit spring assembly 20 comprises, for example, a coil spring 20A. The coil spring 20A or spring assembly 20 is supported on the upper surface 19A of the guide device 17 on the one hand and on the lower surface of the saw unit housing 13 on the other hand.

[0114] Alongside the depth adjustability about the depth adjustment axis TS, the saw unit 11 can be pivoted about a bevel cutting axis G.

[0115] The hand saw 10 has a support 40. The support 40 is provided with a protective housing 29. The saw unit 11 is held on the support 40.

[0116] The support 40 and / or the protective housing 29 are supported in the guide device 17 so as to be pivotable about a bevel-cutting axis G, which runs parallel to the longitudinal axis L of the guide device 17, i.e. by means of a front bevel-cutting bearing 21 in the working direction AR and a rear bevel-cutting bearing 23 in the working direction of the bevel-cutting bearing assembly 21A. The bevel-cutting bearings 21, 22 are arranged close to or directly on the front and rear end faces 18C, 18D of the guide body 18, i.e. they form so to speak the frontmost and rearmost components of the hand saw 10 in the working direction AR.

[0117] The bevel-cutting bearings 21, 22 each have a bearing base 23, in particular in the form of a plate, which protrudes upwardly from the upper surface 19A of the device 10, in which a bearing body 24, also preferably formed as a plate, is supported so as to be rotatable about the bevel-cutting axis G.

[0118] The bevel-cutting bearings 21, 22 can be fixed in a number of pivotal positions relative to the bevel-cutting axis G by means of fixing means 25. The fixing means 25 comprises, for example, a clamping screw 25A which can urge the bearing base 23 and the bearing body 24 towards one another in a clamped position, thereby holding the bearing base and the bearing body to one another force-lockingly, for example by means of intermeshing teeth, and / or frictionally and / or form-lockingly and fixing the support 40 to the guide device 17 in an angular position adjusted relative to the bevel-cutting axis G.

[0119] Instead of the concept of a support 40 on which the saw unit 11 and the scoring unit 31 are arranged so as to be able to rotate simultaneously about the bevel-cutting axis G by means of a bevel-cutting bearing assembly 21A, a concept is also possible in which the scoring unit 31 can be swiveled about the bevel-cutting axis G independently of the saw unit 11. For this purpose, for example, a bevel-cutting bearing 22A is present between the scoring unit 31A, which itself corresponds to the scoring unit 31, and the saw unit 11, as in the embodiment of the hand saw 10A according to FIG. 5. Naturally, like the bevel-cutting bearings 21, 22, this bevel-cutting bearing 22A can also be fixed by means of fastening means 25, for example by means of a clamping screw, whereby the relative position of the saw unit 11 and the scoring unit 31 can be fixed with respect to the bevel-cutting axis G.

[0120] 5 may, however, also provide that the saw unit 11 can pivot about the bevel-cutting axis G, but that the scoring unit 31A is arranged relative to the bevel-cutting axis G stationary with respect to the guide device 17. In this case too, a bevel-cutting bearing 22A is advantageously provided between the scoring unit 31 and the saw unit 11.

[0121] The support 40 comprises a protective housing 29 having a saw tool receiving space 48 for receiving the saw tool 15. The saw tool 15 is received pivotally about a depth adjustment axis TS for a pivoting movement in the saw tool receiving space 48, the saw tool not projecting in front of the saw tool receiving space 48 in an upper depth adjustment position OT, but projecting to its maximum extent in front of the protective housing 29 and the guide surface 19 in a lower depth adjustment position, e.g. in the lowest depth adjustment position UT.

[0122] The sawing tool receptacle 14 is driven in rotation in one direction about the tool rotation axis DS by the sawing drive motor 12 so that the sawing tool 15 cuts into the workpiece W from its underside WU and creates a saw cut SAE. The sawing tool 15 is a saw blade, the teeth of which are driven inclined in the direction of rotation with respect to the guide surface 19, whereby the teeth can lead to the formation of cracks when they exit the workpiece upper side WO. To prevent this problem, the hand saw 10 has a creasing device module 30.

[0123] The creasing device module 30 comprises a creasing device unit 31 arranged in front of the saw unit 11 in the working direction AR. Like the saw unit 11, the creasing device unit 31 is arranged on a support 40. A creasing device drive motor 32 drives the creasing device tool holder 34 about the tool rotation axis DV, but in the opposite direction to the direction of rotation of the tool rotation axis DS. The creasing device drive motor 32 forms a creasing device drive 32A.

[0124] The scoring tool 35, for example a scoring tool saw blade, can be removably attached to the scoring tool receptacle 34, in particular by means of a holding element 34A, in particular a holding screw. The scoring tool 35 is driven in one rotational direction and cuts with its teeth into the workpiece W from the workpiece top surface WO, generating a score RI which is aligned with the saw cut made in the workpiece W by the saw tool 15. The score is somewhat wider than the subsequent saw cut, so that the saw tool 15 does not come into contact with the longitudinal edge of the score, and therefore no or only few cracks are formed on the workpiece top surface WO and no or only few chips or the like are torn off.

[0125] The creasing unit housing 33, in which the essential components of the creasing unit 31 are accommodated in a protected manner, is arranged on the support 40. The creasing unit housing 33 is thus stationary both with respect to the support 40 and with respect to the protective housing 29, whereas the movable components of the creasing unit 31, in particular the creasing device drive motor 32 and the transmission between the creasing device drive motor 32 and the creasing device tool receptacle 34, are accommodated movably in the inner space of the creasing unit housing 33. The creasing device drive motor 32 is advantageously accommodated in a motor housing 33A which is separate from the creasing unit housing 33. The motor housing 33A is movable relative to the creasing unit housing 33.

[0126] The creasing unit 31 comprises a creasing device support 80 which is supported on the support 40 about a depth adjustment axis TV by means of a creasing device depth adjustment bearing 36. The creasing device tool receptacle 34 is likewise accommodated in the inner space of the protective housing 29, i.e. in the creasing device tool receptacle space 49 of the protective housing.

[0127] The creasing device support 80 has, for example, a block-like or rectangular parallelepiped shape. The creasing device support 80 has, for example, an elongated shape. The longitudinal axis of the creasing device support 80 or of the entire creasing device support 80 is, for example, inclined at a shallow angle to the guide surface 19 depending on the respective pivot position relative to the depth adjustment axis TV, or is parallel to the guide surface 19 in several angular positions relative to the depth adjustment axis TV.

[0128] The creasing device support 80 has, in its opposing longitudinal end regions, a bearing part 81, which is supported in the creasing device depth adjustment bearing 36 about the depth adjustment axis TV, and a motor part 82, which has a motor receptacle 83, in which the creasing device drive motor 32 is held. Between the creasing device drive motor 32 and the creasing device tool receptacle 34, a gearing 84, which is a stepped gearing or the like, can be arranged. For example, on the basis of the gearing 84, it is possible for the tool rotation axis DV and the motor rotation axis DM of the creasing device drive motor 32 to have a lateral distance from one another. For example, the motor rotation axis DM has a greater distance to the guide surface 19 than the tool rotation axis DV, so that the motor rotation axis is very close to the guide surface 19. It is thus possible, for example, for the creasing device drive motor 32 to have a larger diameter for generating a correspondingly larger torque than in the case of a version in which the motor rotation axis and the tool rotation axis DV are aligned with one another.

[0129] In order to operate the sawing tool holder 14 between the upper depth adjustment position OT and the lower depth adjustment position UT, the entire saw unit 11 must be pivoted about the depth adjustment axis TS. For this, the operator can, for example, grip the hand grips 26 and / or 27 arranged on the saw unit housing 13. The hand grip 26 is arranged behind the saw unit 11 in the working direction AR, and the hand grip 27 is arranged on the saw unit 11 in the front area of ​​the saw unit housing 13 in the working direction AR. The two hand grips 26, 27 have an elongated shape. The hand grip 26 has a longitudinal axis L26 that runs substantially parallel to the longitudinal axis L of the guide device 17, whereas the longitudinal axis L27 of the hand grip 27 runs transversely to this longitudinal axis L. That is to say, the operator can, for example, by pressing the hand grip 27, generate a torque about the depth adjustment axis TS, which causes the sawing tool holder 14 to pivot about the depth adjustment axis TS and moves the saw tool 15 in front of the guide surface 19.

[0130] The hand grip 27 simultaneously constitutes an operating element 27A, which enables the operator not only to operate the saw unit 11 or the sawing tool holder 14 between the depth adjustment positions, but also to operate the scoring unit 31 in addition. The operating element 27A, i.e. the operating hand grip 27B, acts on the scoring unit 31 via the entrainment device 70 in order to adjust the scoring unit 31 between an active position AP, in which the scoring tool 35 projects in front of the guide surface 19, and an inactive position IP, in which the scoring tool 35 is retracted behind the guide surface 19 or in any case does not project in front of the guide surface.

[0131] The creasing device support 80, and thus the creasing device tool receptacle 34, is loaded by the creasing unit spring assembly 39 in the direction of the inactive position IP. If, on the other hand, the saw unit 11 is operated from the upper depth adjustment position OT to the lower depth adjustment position UT, the entrainment device 70 entrains the creasing unit 31 in the opposite direction, i.e. to the active position AP. When adjusting the hand saw 10 to the lower depth adjustment position or sawing position, the operator therefore works, as it were, against the two spring assemblies 20, 39 in order to adjust the saw tool 15 and the creasing tool 35 into the working or sawing position for cutting into the workpiece W. The two spring assemblies 20, 39 act in opposite directions, as it were, in the inactive or safety position, and both spring assemblies act in a safety sense, i.e. in the sense of retracting the saw tool 15 and the creasing tool 35 behind the guide surface 19.

[0132] The entrainment device 70 comprises an operating body 71 at the saw unit 11, which acts on an operated body 72 of the scoring unit 31. The operating body 71 is configured as a link guide 73 and comprises a guide link 74, along which a link follower 75 of the scoring unit 31, for example a roller or idler roller, is guided, for example rolls. The operating body 71 and the operated body 72 are advantageously arranged outside the protective housing 29.

[0133] The guide link 74 comprises a creasing device activating part 76 and a creasing device holding part 77, between which an apex 76A is arranged. The creasing device holding part 77 of the guide link 74 or of the link path extends within a radius R about the depth adjustment axis TS. In contrast, the creasing device activating part 76 extends at an angle to the creasing device holding part 77 such that the link follower 75, which is guided along the holding part 77 in any case, manipulates the creasing device tool receiving part 34 and thus the creasing tool 35 from an inactive position IP in the direction of the active position AP along the movement path BB.

[0134] The scoring device activation 76 is formed such that, when the sawing tool holder 14 is adjusted from the upper depth adjustment position OT in the direction of the lower depth adjustment position UT, the scoring tool 35 is adjusted from the inactive position IP to the active position AP in front of the sawing tool 15, which in the active position projects in front of the guide surface 19 for engaging the workpiece W with a preferably adjustable maximum penetration depth or score depth Rmax. The score depth Rmax or the active position AP is already adjusted or adjustable when the sawing tool 15 or the sawing tool holder 14 or the saw unit 11 assumes the depth adjustment position RT in which the sawing tool 15 does not yet project in front of the guide surface 19. This adjustment of the hand saw 10 corresponds to a pure scoring or scoring operation in which the scoring unit 31 or the scoring tool 35 is utilized only for scoring the workpiece W.

[0135] So that the operator does not have to manually balance the saw unit 11 in this purely scoring or scoring operation in the depth adjustment position RT, so to speak, a scoring-only depth stop device 78 is provided. This scoring-only depth stop device 78 comprises a stop element 79, which is movably supported on the saw unit 11 and can, for example, be slidably moved, and which can be adjusted between a stop position TA, in which it strikes against a counter stop 79A arranged on the protective housing 29, and a release position TF, in which the stop element 79 can be moved alongside the counter stop 79A. As a result, the saw unit 11 and thus the sawing tool receptacle 14 are moved further from the score depth adjustment position RT in the direction of the lower adjustment position UT, in which the saw tool 15 projects in front of the guide surface 19 so as to cut into the workpiece W. For example, the stop element 79 is supported on the motor housing part 28 or on the saw unit housing 13 so as to be displaceable transversely to the longitudinal axis L.

[0136] The stopper member 79 is advantageously arranged near the hand grip 26, in particular in the upper region of the hand grip furthest from the guide device 17, so that an operator holding the hand grip 26 can operate the stopper member 79 with his thumb in a sliding guide, not shown in detail, between a stop position TA and a release position TF.

[0137] Above this, or in the region furthest from the guide device 17, the hand grip 26 further comprises a main switch operating element 60 for operating a main switch 60A which can switch the sawing drive motor 12 and the creasing device drive motor 32 on and off.

[0138] The hand saw 10 can be connected, for example by means of a connecting wire 67, to an electrical energy supply network, for example a 120V, 230V AC voltage network, etc., for supplying electrical energy to the drive motors 12, 32 and other electrical components of the hand saw 10.

[0139] Alternatively or in addition to the supply by the electrical energy supply network, an electrical energy store 67D, for example an accumulator, can also be provided, for example for the energy supply of the saw unit 10 and / or the scoring unit 31.

[0140] A connection line 68 is provided for supplying power from the saw unit 11 to the scoring unit 31. The connection line 68 is connected at its longitudinal ends by connections 68A, 68B to the saw unit 11 on the one hand and to the scoring unit 31 on the other hand. An arc-shaped connection portion 68C or an arc-shaped portion extends between the connections 68A, 68B.

[0141] However, it is also possible that the scoring unit 31 can be supplied with electrical energy by means of an electrical energy store 68D, arranged for example on or in the scoring unit housing 33.

[0142] The connection portion 68C extends in an arc starting from the longitudinal ends 68A, 68B in the direction of the protective housing 29, so that between the longitudinal ends or 68A, 68B there is an intermediate space that is optimally suitable for manipulating the components of the creasing unit 31.

[0143] In particular, the creasing device handgrip body 37 is accessible through the intermediate space between the connecting parts 68A, 68B or through the inner space of the connection part 68C, by means of which the operator can apply an operating force in the region of the creasing unit 31 in the direction of the guide surface 19. The creasing device handgrip body 37 has a handgrip surface 37A, which is provided in particular on the upper wall 38 of the creasing unit housing 33. The creasing unit housing 33 thus forms the creasing device handgrip body 37.

[0144] Hand grip surface 37A is provided with a grip recess 37B and a flat surface 37C. Extending above grip recess 37B is a grip protrusion 37D having a peripheral contour that fits, for example, within the palm of an operator's hand.

[0145] The housing 33 further has a side wall 38A extending adjacent the longitudinal side 18B of the guide body 18 and a front wall 38B extending parallel to the front end face 18B of the guide body 18.

[0146] The housing 33 of the creasing unit 31 is fixedly arranged on the support 40, so that the housing does not pivot about the depth adjustment axis TV but is non-pivotable with respect to the depth adjustment axis TV. An operator is therefore supported on the housing 33, in particular on the upper wall 38 of the housing, in order to guide the hand saw 10 in the working direction AR and can apply a force to the hand saw 10 in the direction of the guide surface 19 and / or in the working direction AR. For support on the upper surface 19A of the guide body 18, the housing 33 has a support portion 38D.

[0147] The housing 33 is advantageously designed in an ergonomically favorable manner. For example, the upper wall 38 is inclined obliquely backwards at a small angle to the working direction AR, so that the operator can apply an operating force to the housing 38 and thus to the hand saw 10 forwards in the working direction AR. The upper wall 38 or the housing 33 advantageously has a grip projection 38C, which is also suitable for accommodating the creasing device drive motor 32 underneath. The operator can be supported on the grip projection 38C or can grasp the grip projection, for example with the palm of the hand. This results in a particularly ergonomic operating concept.

[0148] That is, the operator BE, shown diagrammatically, for example, holds the hand grip 26 with one hand to guide the hand saw 10, which also operates the main switch 60 and the operating element 61A, and with the other hand, optionally holds the hand grip 27, as shown as hand position H1 in FIG. 28, or is supported by the creasing device hand grip body 37 or housing 38, as shown as hand position H2.

[0149] An alternative operating concept, or one which is envisaged in addition to the handgrip 37, envisages an additional creasing device handgrip body 337. The handgrip body 337 is, for example, rod-shaped and has a handgrip surface 337A for gripping by the operator BE. The handgrip body 337 is attached to the protective housing 29 by means of a support 337B and projects from the protective housing in the direction of the creasing unit 31.

[0150] The creasing unit 31 is disposed between the hand grip body 337 and the guide body 18, and an intermediate space Z exists between the hand grip body 337 and the upper surface of the housing 33 of the creasing unit 31 opposite the guide body 18, and an operator can pass through this intermediate space to grasp the hand grip body 337.

[0151] The two handgrip bodies 37 and 337 extend transversely, in particular perpendicularly, along the longitudinal axis L38 of the guide body 18. The two handgrip bodies 337 and 37 preferably extend up to the so-called tool-free longitudinal side 18B of the guide body 18. Preferably, the two handgrip bodies 37 and 337 extend from the longitudinal or short side 18B in the direction of the longitudinal side 18A on which the tools 15, 35 are arranged over substantially the entire lateral width of the guide body 18, so that the two handgrip bodies provide the operator with an ergonomic support for guiding the hand saw 10.

[0152] Furthermore, the saw unit 11 or the sawing tool holder 14 can be locked in the upper depth adjustment position OT by means of a locking device 61. An operating element 61A of the locking device 61, which is formed, for example, as a push-on operating element, is arranged in the upper region of the handgrip 26 or in the region furthest from the guide device 17. By operating the operating element 61A, it is possible to disengage the operating element from a counter contour 61B, for example a rear engagement contour, so that the saw unit 11 is unlocked for adjustment from the upper depth adjustment position OT to one of the lower depth adjustment positions UT or to the stitch depth adjustment position RT.

[0153] The groove depth adjustment position RT and the other lower depth adjustment position UT can also be adjusted using a sawing depth adjustment device 62 of the handheld saw 10. The sawing depth adjustment device 62 includes a depth stopper guide 63 that extends in an arc shape around the sawing depth adjustment bearing 16.

[0154] It is advantageous if, alongside the depth stop guide 63, likewise at least in the region of the creasing device activation part 76, a guide link 74 is also arranged which runs in an arc about the depth adjustment axis TS.

[0155] A depth stop 64 is adjustably, e.g. displaceably, supported in a depth stop guide 63 to various depth adjustment positions. The depth stop guide 63 comprises, e.g., a guide groove, a guide slot, or the like. The depth stop 64 can be fixed in place relative to the depth stop guide 63 by a fastening 65, e.g., a locking fastening, a clamping fastening, or the like.

[0156] A stopper body 66 is arranged on the saw unit 11 movable around the depth adjustment axis TS, and this stopper body protrudes in the direction of the depth adjustment stopper 64 and strikes against the depth adjustment stopper at a depth adjustment position adjusted by the depth adjustment stopper.

[0157] The creasing unit 31, in particular its creasing device support 80, is supported by a support 40 which is rotatable about a bevel cutting axis G, by means of a creasing device depth adjustment bearing 36 so as to be rotatable about a depth adjustment axis TV. The creasing device depth adjustment bearing 36 comprises a bearing base 86 which is attached to the support 40. The bearing base 86 comprises a support plate 86A, for example a flange or flange body, from which a shaft member 86B projects. The support plate 86A is attached to a base wall 29A of the protective housing 29 by means of screws 86C, whereby the shaft member 86B projects from the base wall 29A.

[0158] A bearing sleeve 86E is disposed on the outer periphery of the shaft member 86B, and a bearing member 86F is also disposed on the outer periphery of the bearing sleeve. That is, the bearing sleeve 86E engages with a bearing receiving portion of the bearing member 86F, so that the bearing member 86F is supported by the bearing sleeve 86E so as to be rotatable about the depth adjustment axis TV. The bearing member 86F is, for example, fixedly connected to the creasing device support 80 and is, for example, received in a receiving portion of the creasing device support.

[0159] The bearing sleeve 86E is an option for improving the rotation or pivoting about the depth adjustment axis TV. To that end, the bearing sleeve 86E improves the longitudinal displaceability of the creasing device support 80, and thus of the creasing unit 31, about the lateral adjustment axis QS in order to adjust the creasing device tool receptacle 34 relative to the sawing tool receptacle 14 and thus the creasing tool 35 relative to the saw tool 15 in mutually aligned axes, so that the creasing marks made by the creasing tool 35 are aligned with the saw cuts made by the saw tool 15. Advantageously, the lateral adjustment axis QS simultaneously corresponds to the depth adjustment axis TV.

[0160] The lateral adjustment device 87 is used to adjust the creasing tool tool receptacle 34 with respect to the lateral adjustment axis QS. The lateral adjustment device 87 comprises, for example, an adjustment screw as adjustment member 87A, the head of which constitutes the operating element 87B. The operating element 87B can be provided with a handle, for example a corrugation or similar, on the radially outer side, which facilitates the operation by the operator BE. The threaded portion 87C engages in an adjustment receptacle 86D of the shaft member 86B and is screwed into the adjustment receptacle. By turning the adjustment screw or adjustment member 87A, the position of the operating element 87B can thus be adjusted along the lateral adjustment axis QS. That is to say, the threaded portion 87C is screwed, so to speak, into the adjustment receptacle 86D or unscrewed from it.

[0161] The operating element 87B projects in front of the shaft part 86B by means of a projection, e.g. a flange, which projects radially in front of the lateral adjustment axis QS, and can thereby support the bearing sleeve 86E and / or the bearing part 86F on said projection. When the threaded part 87C is screwed into the adjustment receptacle 86D, the operating element 87B thus entrains the bearing part 86F along the lateral adjustment axis QS in the direction of the support plate 86A of the bearing base 86, thereby adjusting the creasing tool tool receptacle 34 in the sense of being away from the tool longitudinal side surface 18A of the guide body 18.

[0162] The spring 86H acts in the direction opposite to this adjustment direction, it is supported on the one hand by the support plate 86A and on the other hand by the bearing member 86F and therefore acts with a force in the direction of the operating element 87B. The spring 86H engages in a spring receiving portion 86G of the bearing member 86F which is formed, for example, as a circumferential groove extending about the lateral adjustment axis QS. The bearing member 86F, the bearing sleeve 86E and the shaft member 86B pass through the spring 86H.

[0163] By rotating the operating element 87B about the lateral adjustment axis QS, the position of the creasing device tool receptacle 34 and thus the creasing tool 35 can be adjusted in opposite directions relative to the lateral adjustment axis QS, for example by up to 2.5 to 4 mm from the central position, relative to the longitudinal axis L of the guide body 18 and / or the cutting axis that can be made by the saw tool 15.

[0164] A locking device 88 is used for fixing, in particular rotationally fixing, the operating element 87B or the adjustment member 87A. The locking device 88 comprises a clip-like spring 88A or alternatively 188A, at whose free end a locking member 88B is formed. The locking spring 88B, 188B is in locking engagement with a locking reception 88C, which is arranged on the radial outer periphery of the operating element 87B relative to the lateral adjustment axis QS. By rotating the operating element 87B, the locking member 88B moves out of the locking reception 88C and locks into the next locking reception 88C adjacent in the circumferential direction. The locking device 88 thus fixes the lateral adjustment device 87 with respect to the respectively adjusted lateral adjustment of the creasing device tool reception 34.

[0165] The object 72 is arranged on the object arm 90, i.e. in the free end region of the object arm. A rotary bearing 90A for a wheel 90B is arranged there, which can rotate about a rotary axis D90 by means of the rotary bearing 90A in the free end region of the object arm 90, which is a link follower 75, i.e. by means of which the wheel 90 can roll on the guide link 74.

[0166] The object arm 90 is supported by a bearing 91 so as to be pivotable about a pivot axis which corresponds in this case to the depth adjustment axis TV relative to the scoring device support 80 of the scoring unit 31, whereby the link follower 75 has different angular positions depending on the pivot position of the object arm 90 relative to the depth adjustment axis TV or relative to the scoring device support 80, whereby by pivoting the object arm 90 in the active position AP relative to the scoring device support 80, different penetration depths of the scoring tool 35 into the workpiece W or different distances which the scoring tool 35 projects in front of the guide surface 19 can be adjusted. The object arm 90 therefore forms part of the scoring device depth adjustment means 95.

[0167] An operating arm 92 projects from the object arm 90 at an angle from the bearing 91. The operating arm 92 is provided with an operating surface 92A, on which an adjustment body 93 acts. By adjusting the relative position of the adjustment body 93 with respect to the operating surface 92A, the object arm 90, and thus the link follower 75, can be adjusted in such a way that it has different operating distances BA relative to the creasing tool tool receptacle 34. The link follower 75, and thus the object 72 and the creasing tool tool receptacle 34, project opposite each other in the form of arms from the bearing 81 of the creasing tool support 80.

[0168] The adjustment body 93 supports the operating arm 92 against the force of a spring assembly 94. The spring assembly 94 comprises a coil spring 94A which is fixed on the one hand to the scoring device support 80 and on the other hand to the operated body arm 90 and which urges it in a certain manner towards the support 90 or towards the scoring device tool receptacle 34. The adjustment body 93, on the other hand, acts in the opposite direction, i.e. in the sense of adjusting the operated body arm 90 from the scoring device support 80 and thus in the sense of increasing the operating distance between the operated body 72 and the scoring device tool receptacle 34.

[0169] The adjustment body 93 is supported so as to be displaceable along an axis SA relative to the creasing tool support 80. Furthermore, the adjustment body 93 is supported so as to be displaceable transversely to the axis SA, in this case transversely at a right angle, along an axis SB, this degree of freedom of movement being assigned to the creasing tool depth adjustment means 95.

[0170] The adjustment body 93 has a longitudinal end 93A at which an adjustment surface 93B is arranged for engagement with the operating surface 92A of the operating arm 92. Between the longitudinal end 93A and the operating end 93B extends an intermediate portion 93C of the adjustment body 93, in the middle of which the adjustment body has an adjustment contour 93D.

[0171] The adjustment body 93 is supported displaceably with respect to the adjustment axis SA in a bearing body 96, which is designed, for example, as a housing. For example, the bearing body 96 has bearing receptacles 96A, 96C, which are arranged in the walls or bearing parts 96B, 96D of the bearing body 96. A central part 93C of the adjustment body 93 extends between the bearing receptacles 96A, 96C, and the adjustment body 93 projects in front of the bearing body 96 on the opposite sides, namely, on the one hand, with an adjustment surface 93B, which engages with the operating surface 92A of the operating arm 92, and, on the other hand, with an operating end or operating element 93E, on which a grip surface or similar other adjustment surface for operating by the operator is arranged.

[0172] That is, the operator can, for example, pull the operating element 93E in the direction of the adjustment axis SA, so that the adjustment body 93 is disengaged from the operating surface 92A, whereby the spring assembly 94 can operate the operated body arm 90 from the activation position AK in a direction away from the guide link 74 to the deactivation position DK. In the deactivation position DK, the link follower 75 is not engaged with the guide link 74 and has, for example, a distance F relative to the guide link 74 (FIG. 7), whereby the entrainment connection of the entrainment device 70 between the saw unit 11 and the scoring unit 31 is released. The saw unit 11 can thus be adjusted between its depth adjustment positions OT and UT without the scoring unit 11 being adjusted about the depth adjustment axis TV. The scoring tool 35 remains retracted behind the guide surface 19, i.e. is inactive.

[0173] That is, the adjustment body 93 is a component of a deactivation device 97 for deactivating or activating the entrainment device 70 .

[0174] The adjustment body 93 is loaded in its activation position AK by a spring 96E which is supported, for example, by the adjustment body 93, for example at a step close to the central portion 93C, and by a wall 96D of the bearing body 96.

[0175] The operating end or operating element 93E is preferably provided with a rotation prevention feature 93F which is fixed relative to the scoring device support 80, for example a plane on which the operating end 93F is supported non-rotatably relative to the adjustment axis SA.

[0176] The adjustment contour 93D forms one component of the creasing tool depth adjustment means 95. The adjustment contour 93D, arranged on the radial periphery of the central part 93C of the adjustment body 93, engages with an adjustment receiving part 98, the position of which is adjustable along an adjustment axis SB and thus transversely to the adjustment axis SA by means of a depth adjustment member 99, for example an adjustment screw. The operator can operate the depth adjustment member 99 by means of an operating element 99A.

[0177] Alternatively, it may be possible for the adjustment body 93 to be supported so as to be pivotable about the adjustment axis SA and for the adjustment contour 93D to be an eccentric contour, whereby by rotating the adjustment body 93 about the adjustment axis SA, parts of the adjustment contour 93D which protrude to different degrees radially forward of the adjustment axis SA are supported in the adjustment receiving portion 98, whereby the adjustment surface 93B of the adjustment body 93 assumes different positions relative to the adjustment axis SB.

[0178] The depth adjustment member 99 has, for example, an operating element 99A, for example a head, from which a threaded portion 99B projects, which is rotatably supported in a component that is stationary relative to the creasing device support 80, for example a bearing body 96, and which is screwed into a body 98A that provides an adjustment receiving portion 98.

[0179] By screwing the depth adjustment member 99, the lateral position of the adjustment receiving portion 98, which is, for example, U-shaped, can be adjusted transversely to the adjustment axis SA, for example along the adjustment axis SB, whereby at the same time the position of the adjustment surface 93B, and thus of the operating surface 92A of the operating arm 92 abutting the adjustment surface, is adjusted transversely to the adjustment axis SA.

[0180] In the adjustment accommodation portion 98, the adjustment body 93 is accommodated so as to be displaceable along the adjustment axis SA, whereby the creasing device depth adjustment means 95 maintains its respective adjusted depth adjustment position even when the deactivation device 97 is operated by displacing the adjustment body 93 along the adjustment axis SA.

[0181] Between the scoring unit housing 33 forming the scoring device handgrip body 37 and the saw unit housing 13, relative to the longitudinal axis L of the guide device 17 and the guide body 18, there is an intermediate space 33B in which one or more of the operating elements for the operator of the scoring unit 31 arranged to be operated by the operator, such as the operating element 93E of the deactivation device 97, the operating element 87B of the lateral adjustment device 97 or the operating element 99A of the scoring device depth adjustment means 95, can be easily accessed.

[0182] The hand saw 10 is short with respect to the longitudinal axis L of its guide body 18, i.e. between the end faces 18C, 18D. This is achieved by the particularly compact creasing device module 30 or creasing unit 31. It is furthermore advantageous that the depth adjustment axis TV is arranged between the tool receptacles 14 and 34. This means that the hand saw 10 is therefore very short, i.e. not top-heavy, so to speak, in its front area in the working direction AR.

[0183] The arrangement of the tool receptacles 14, 34 and thus the saw tool 15 and the scoring tool 35 close to or even directly on the longitudinal side 18A of the guide body 18 also contributes to the ease of use of the hand saw 10. Among other things, this allows a good view of the entry area of ​​the two tools 15, 35 into the workpiece W. In addition, the bevel cutting axis G runs immediately next to the longitudinal side 18A, so that the tools 14, 35 can be optimally swiveled not only around this longitudinal side 18A but also around the longitudinal narrow side 204 of the guide rail 200, 200A.

[0184] Furthermore, the hand saw 10 provides an advantageous suction concept for dust, particles, etc., generated when sawing and scoring the workpiece W.

[0185] The sawing tool receiving space 48 and the scoring tool receiving space 49 are equipped with a sawing dust discharge device 48A and a scoring tool dust discharge device 49A. The receiving spaces 48, 49 extend up to the guide surface 19, in which the sawing tool 15 protrudes from the respective receiving space 48, 49 in front of the guide surface 19 in one of the lower depth adjustment positions UT and the scoring tool 35 in its active position AP. The dust discharge devices 48A, 49A are flow-connected to a dust discharge connection 52 which is arranged rearwardly in the working direction AR on the hand saw 10, in particular rearwardly and upwardly on the protective housing 29. A suction device SV, for example a suction hose SL of a work suction device, can be connected to the dust discharge connection 52, which is formed, for example, as a connecting pipe piece, in order to suck out dust, particles or the like which are generated during the sawing operation of the hand saw 10.

[0186] The protective housing 29 has a protective housing part 40A which is stationary relative to the support 40 and which is covered by a protective housing cover 41 which can be advantageously removed from the protective housing part 40A for maintenance purposes. Between the protective housing part 40A and the protective housing cover 41, accommodation spaces 48, 49 are formed for parts of the tools 15, 35 which are upper relative to the guide device 17. The protective housing part 40A has, for example, a base wall 29A which is located opposite the cover wall 42 of the protective housing cover 41.

[0187] Between the base wall 29A and the cover wall 42 there is a gap 42A, by means of which the tool 15, 35 can be moved out of the protective housing 29 so that it projects in front of the guide surface 19. Next to the gap 42A extends an inclined wall section 42B of the cover wall 42, which wall section is inclined obliquely in the sense that the lateral distance between the cover wall 42 and the base wall 29A is smaller in the region of the gap 42A and / or is smaller in the region of the saw tool receiving space 48, farther from the guide surface 19, in which the sawing tool receiving part 14 is arranged.

[0188] Side walls 43C, 43 and 44C, 44 abutting and engaging with each other at their end faces protrude at an angle from the base wall 29A and the cover wall 42, whereby the side walls 43-44 define receiving spaces 48,49.

[0189] The side walls 43C, 43 are for example rear side walls in the working direction AR. The side walls 44C, 44 extend along the upper or furthest part of the protective housing 29 from the guide device 17 and along the front part of the protective housing 29 in the working direction AR.

[0190] The protective housing 29 has a projection 45 in which a scoring tool receiving space 49 is provided. The cover wall 42 extends up to the projection 45, where a side wall 46 projects from the cover wall 42 on the side facing away from the guide device 17 and a side wall 47 projects angularly forward in the working direction, i.e. towards the end face 18C, which side walls abut on the end face side against a protective housing part 40A which is stationary relative to the support 40, so that the projection 45 as a whole also provides, with the exception of the through opening for the scoring tool 35, a scoring tool receiving space 49 which is closed towards the guide surface 19.

[0191] In that case, it would in principle be possible to suction the two receiving spaces 48, 49 via the dust exhaust connection 52 without further fluid engineering measures. However, in this case it is not taken into account that when the scoring tool 35 cuts into the workpiece upper surface WO, it will project particles towards the sawing tool 15, which will significantly damage the cutting edge of the preceding sawing tool 15 in the working direction AR. To solve this problem, some measures are advantageous, which are explained below.

[0192] A dust discharge passage 50 extends in the region of the protective housing 29 facing away from the guide device 17 for sucking out dust, particles or the like. The dust discharge passage 50 is defined in the cover 41 or protective housing part 40A by the side walls 44, 44C on the one hand and by intermediate walls 51, 51C located opposite the side walls on the other hand. The dust discharge passage 50 extends from a region in front of the saw tool 15 in the working direction AR to a dust discharge connection 52 arranged behind in the working direction AR.

[0193] In that case, it would in principle be possible for the scoring tool receiving space 49 to communicate directly with the dust discharge channel 50. However, it is advantageous if at least in the region where the saw tool 15 and the scoring tool 35 directly face each other, i.e. close to the guide surface 19, there is a separation of the saw tool receiving space 48 from the scoring tool receiving space 49, i.e. in the form of a partition wall 55. The partition wall 55 advantageously has a partition wall part 55C which is fixed relative to the protective housing 29, for example to the protective housing part 40A. The partition wall 55, in particular the partition wall part 55C, extends up to the guide surface 19 and thus stands between the saw tool 15 and the scoring tool 35.

[0194] On the side facing the scoring tool 35, the partition part 55C or the partition 55 advantageously has a flow guide surface 55E, for example an inlet slope or impact surface 55D, against which the particles generated by the scoring tool 35 impact and are deflected in the direction of the dust discharge passage 50, i.e. so that they do not flow further towards the saw tool 15.

[0195] In the region of the partition wall portion 55C away from the guide surface 19, the scoring tool receiving space 49 opens into an outlet opening 52C into the dust discharge passage 50, whereby the particles generated by the scoring tool 35, shown as particle flow PV by black arrows in FIG. 18, are mixed with a particle flow PS containing particles generated by the saw tool 15, shown by white arrows.

[0196] An alternative concept is shown in FIG. 21, in which the aforementioned partition wall 55 between the scoring tool 35 and the saw tool 15 is also advantageous and is envisaged. However, there, the receiving spaces 48, 49 are completely separated from one another and the scoring tool receiving space 49 has a dust discharge connection 52B separate from the dust discharge connection 52 for discharging the particles of the scoring unit 31, to which a separate suction hose SL2 can be connected. For example, the dust discharge connection 52B is provided with a connecting piece for connecting the suction hose SL2, which connecting piece is also flow-connected, for example, with a suction device SV in order to generate a particle flow PV which carries away the particles of the scoring unit 31. The particles generated by the saw tool 15 flow as a particle flow PS separated from the particle flow PV to the suction device SV via the dust discharge connection 52.

[0197] The dust discharge connection 52, 52B is preferably provided with a form-locking contour 52A for holding the suction hose SL, SL2 in a form-locking manner, e.g. a rotary form-locking contour, a plug-in form-locking contour, etc. Furthermore, it is advantageous if the dust discharge connection 52, 52B has a rotary bearing 52D, by means of which the suction hose SL, SL2 is rotatably supported on the hand saw 10.

[0198] The arrangement of the tool receptacles 14, 34 and thus the tools 15, 35 directly on the so-called free longitudinal side 18A of the guide body 17 already provides optimal visibility of these tools. Furthermore, a viewing window 54 in the cover wall 42, in particular in the lower end region of the cover wall close to the guide surface 19, is also advantageous.

[0199] The viewing window 54 is arranged in the area of ​​the cover wall 42 where the scoring tool 35 is located opposite the sawing tool 15. This makes it possible to view the two tools through the viewing window 54.

[0200] The viewing window 54 can be closed by a fixed transparent wall, for example made of plastic, so that the receiving spaces 48, 49 are closed by this wall. In this case, however, a cover element 53, in particular a window body or a window cover element, is provided.

[0201] The cover element 53 has a saw tool part 53A and a creasing tool part 53B, the saw tool part being assigned to the saw tool 15 and the creasing tool part being assigned to the creasing tool 35, and in either case is located opposite the saw tool or the creasing tool when the cover element 53 is adjusted to a cover position ABS so that the cover element covers the viewing window 54.

[0202] The cover element 53 is adjustable by means of bearings 53D, in particular sliding bearings, in the cover wall 42 between a cover position ABS and an open position OS, in which the cover element opens the viewing window 54 at least partially, in particular the part of the viewing window facing the guide surface 19. For gripping the cover element 53, an operating contour 53C, for example a rib or the like, is advantageously provided. By sliding the cover element 53 in one direction P1, it is adjustable to the open position OS and by sliding it in the opposite direction P2, it is adjustable to the cover position ABS.

[0203] The cover element 53 has a partition wall portion 56 of the partition wall 55. In the cover position ABS and in the open position OS, the partition wall portion 56 engages or comes into contact with the stationary partition wall portion 55A in a telescopic manner or so to speak, such that the partition wall 55 closes. The partition wall portion 56 has, for example, a partition wall receiving portion 57 with side walls 56A facing each other. The stationary partition wall portion 55A can engage in the partition wall receiving portion 57, which in the open position OS engages more deeply in the partition wall receiving portion 57 than when in the cover position ABS.

[0204] Furthermore, the cover wall 42 is provided with cavities 58, 59, through which the tool holders 14, 34 are accessible for tool change of the tools 15, 35. It should be noted here that it is advantageous for the holding elements 14A, 34A to have identical operating contours for tools, e.g. a slit for a screwdriver, with which the holding elements 14A, 34A can be removed for tool change and fixed in the tool holders 14, 34.

[0205] For the tool change of the creasing tool 35, a blocking device 85 is provided. The blocking device 85 comprises a creasing tool blocking element 85A which, in a blocking position, engages in a block receptacle 85B which is arranged, for example, on the output shaft of the transmission 84 and which is connected to the creasing tool tool receptacle 34 in a rotationally immovable manner. The block element 85A is axially displaceable along an adjustment axis S85 in a guide 85C. By pressing on an operating contour 85D in the end region of the block element 85A which freely projects in front of the guide 85C, the operator can bring the block element 85A into engagement with the block receptacle 85B, i.e. into a blocking position in which the creasing tool tool receptacle 34 is blocked in a rotationally immovable manner. This blocking position can be released, for example, by pulling the block element 85A away from the block receptacle 85B. Advantageously, a spring 85E, shown diagrammatically in the drawings, is provided, which biases the blocking member 85A into a release position in which the blocking member 85A does not engage the blocking receiving portion 85B.

[0206] Alternatively or additionally, a motor drive 85F, e.g. an electromagnet, an electric linear drive, etc., can be provided, which is capable of adjusting the blocking member 85A into a blocking position and / or into a release position. For example, the drive 85F can act in a blocking position, whereas the spring 85E acts in a release position. To switch the drive 85E, an electric switch 85G is provided, which can be operated, e.g. by pressing or the like, by an operator.

[0207] For safe and easy tool changes of the saw tool 15 and / or the scoring tool 35 a safety device 100 is used.

[0208] When the safety device 100 is adjusted to its safety position SG, it blocks the switch 60A to prevent the drive motors 12, 32 from being switched on, and when adjusted to the saw operating position FS, it releases the switch 60A to allow the drive motors 12, 32 to be switched on. Thus, for tool changes, the two drive motors 12, 32 can be locked against being on simultaneously by the safety device 100.

[0209] The safety device 100 comprises an operating element 101, which is pivotably supported on the protective housing 29 about a pivot axis DB and / or on the hand grip 26. When the operating element 101 is pivoted away from the protective housing 29 or the hand grip 26, i.e. when it is positioned in the safety position SG shown in Figs. 31 and 32, the operator can immediately recognize the safety position SG. The operating element 101 comprises a grip part 102 with lateral legs, between which a part of the protective housing 29 is accommodated in the sawing position FS. The operating element 101 therefore, so to speak, fits snugly against the protective housing 29 in the sawing position FS and does not protrude in front of the protective housing in any case. The operator can grip the operating element 101 with the grip part 102.

[0210] A motor drive 101A for the operating element 101 is also possible, such as an electric motor shown diagrammatically, which can drive the operating element 101 in a pivoting or rotational manner and which can be switched on and off by an electric switch 101B shown diagrammatically, which can be operated by an operator, for example by pressing.

[0211] The grip part 101 is arranged in the free end region of an operating arm 103 of the operating element 101, which is pivotably mounted in the protective housing 29 by means of a bearing 104 about a pivot axis DB.

[0212] The operating member 101 operates a switch-blocking member 105 to block the switch 60A. The blocking member 105 has an arm 106 which can be operated, for example displaceably and / or pivotably, by the operating element 101, in the free end region of which a rear engagement contour 107, for example a hook, is arranged which rearwardly engages with the operating element 60 of the switch 60A when the switch-blocking member 105 is in the blocking position, so that the operating element cannot operate the switch 60A in the direction of the switched-on position.

[0213] It is furthermore advantageous if the operating element 101 is designed to disengage the locking device 61. For this purpose, for example, an actuator 108, e.g. a cam disk or the like, is kinematically connected to the operating element 101, for example in the sense of rotation about an axis DB, the actuator acting on an adjustment member 109 which, when the operating element 101 is adjusted to a safety position SG, operates the operating element 61A out of engagement with the counter contour 61B. The saw unit 11 can thus be swiveled about the depth adjustment axis TS from an upper depth adjustment position OT into a tool change depth adjustment position WT which is suitable for a tool change of the saw tool 15.

[0214] To lock the tool change depth adjustment position WT, a locking device 120 is provided. The locking device 120 has a locking element 121 that is pivotably mounted about the pivot axis S12. The locking element 121 has a locking projection 122 for locking into a locking receiving portion 123 that is arranged in a fixed position in the protective housing 29, for example next to the depth stop guide 63. A spring 124 biases the locking element 121 in the direction of a locking position in which it can lock into the locking receiving portion 123.

[0215] The locking device 120 is activatable and deactivatable by the safety device 100, i.e. when the operating element 101 is adjusted to the safety position SG, the safety device activates the locking device 120. The operating element 101 is movement-coupled, for example in the sense of a rotational movement, with the actuator 110 for activating and deactivating the locking device 120. The operating mechanism 110 has an operating link 111 on its side facing the locking element 121, which acts on an operating leg 125 of the locking member 121, precisely in the sense that when the operating element 101 is adjusted to the safety position SG, the locking member 121 is released by the spring 124 to lock into the locking receiving portion 123 and / or the spring 124 is preloaded, whereas when the operating element 101 is adjusted to the saw operating position FS, the locking member 121 is held permanently out of engagement with the locking receiving portion 123 against the action of the spring 124 and / or the spring 124 does not have sufficient spring tension to lock the locking member 121.

[0216] When the sawing tool receptacle 14 is adjusted to the tool change depth adjustment position WT, the sawing tool receptacle is located in the area of ​​the cavity 58. By means of the entrainment device 70, the creasing tool tool receptacle 34 is also adjusted to the tool change depth adjustment position, in which it is located in the cavity 59. The tool receptacles 14, 34 are thus accessible for the tool change of the tools 15, 35.

[0217] Furthermore, the operating element 101 cooperates with or has an influence on the blocking device 130, by which the sawing tool holder 14 can be blocked from pivoting about the tool rotation axis DS.

[0218] The blocking device 130 comprises a sawing blocking element 131 which, in a blocking position, engages with at least one blocking contour 132 which is connected non-rotatably with the sawing tool receptacle 14. Several blocking contours 132, for example in the form of blocking recesses 133, are arranged on a fan wheel 134 which is rotationally connected with the sawing drive motor 12 and / or with the sawing tool receptacle 14. The fan wheel 134 comprises, for example, fan blades 135. The blocking recesses 133 are arranged on the radial circumference of the fan wheel 134.

[0219] The motor drive 101A of the safety device 100 simultaneously forms a drive for adjusting the sawing blocking member 131 between its blocking position, in which it blocks the sawing tool holder 14, and a releasing position, in which it releases it.

[0220] The sawing block member 131 has at one longitudinal end a block projection 136 which can engage in one of the block recesses 133 when the corresponding rotational position of the fan wheel places the block recess opposite the block projection. The other longitudinal end of the sawing block member 131 is movably, in particular slidably, accommodated in a bearing not visible in the figure and is loaded in the direction of the blocking position by a spring 137. By adjusting the operating element 101 to the safety position SG, the sawing block member 131 is either released for operation by the spring 137 or the spring 137 is preloaded by the operating element 101 for operating the sawing block member 131, whereby the block projection 136 is preloaded for engagement with one of the block recesses 133. The sawing tool holder 14 is then rotated slightly, causing one of the block notches 133 to move into a front position relative to the block projection 136, whereby this block projection engages with the block notch 133 and fixes the sawing tool holder 14 against further rotation.

[0221] By means of the safety device 100 adjusted to the safety position SG, switching on of the creasing device drive motor 32 is electrically blocked and thus prevented. The operator can therefore safely block the creasing device tool receptacle 34 by manually operating the blocking device 85 and replace the creasing tool 35.

[0222] Alternatively or in addition to this manual operation, a mechanical engaging connection, not shown in the drawing, can be provided between the creasing device block member 85A and the sawing block member 131, so that when the sawing block member 131 is adjusted to the blocking position, the creasing device block member 85A is simultaneously adjusted to the blocking position.

[0223] An electrical connection is also possible if a mechanical connection between the block members 85A and 131 is not possible or difficult, for example because the gearing which creates the connection between the block members 85A and 131 is mechanically complex or requires a large amount of space. For example, a sensor 101C is provided to detect the position of the safety device 100, for example the position of the operating element 101. The sensor 101C detects, for example, whether the safety device 100 is in the safety position SG or in the sawing position FS. In the sawing position FS, the sensor 101C controls, for example, a drive motor.

[0224] The entraining device 70 is shown diagrammatically in Fig. 33. It can be seen that the operator can move the creasing unit 31 from the inactive position to the active position by pivoting the saw unit 11, and the force transmission is performed by the entraining device 70.

[0225] The creasing device drive 32B of the creasing unit 31 is shown diagrammatically, for example a belt 32C or another similar force transmission element which is operatively connected to the saw drive motor 32 and driven by said saw drive motor to drive the creasing device tool receptacle 34. For tensioning the belt, for example tension rollers, in particular sprung tension rollers and / or length compensation devices, etc., not shown in the drawing, can be provided.

[0226] In the embodiment of the hand saw 10C according to Fig. 34, a driving device 70C is provided, by which the scoring unit 31 is driven when the saw unit 11 is operated from the upper depth adjustment position shown in the drawing towards the lower depth adjustment position in which the saw tool 15 projects in front of the guide surface 19. However, the scoring unit 31C is biased by the spring assembly 39C towards the active position in which the scoring tool 35 projects in front of the guide surface 19, and not towards the inactive position as in the hand saw 10.

[0227] As an operating body 71C, the saw unit 11 is provided with a driving or stop surface on which an operated body 72C of the scoring unit 31C is supported. The operated body 72C is arranged, for example, on an operating arm which projects from the scoring device depth adjustment bearing 36 starting from the scoring unit 31C. When the saw unit 11 is adjusted towards the lower depth adjustment position of the sawing tool housing 34, the operating body 71C, as it were, releases the operated body 72C, i.e. the spring assembly 39C can adjust the scoring unit 31C from the inactive position towards the active position.

[0228] In the active position, the scoring unit 31C advantageously bears with a stop projection 95C against a scoring device depth stop 95D of the guide device 17. The depth stop 95D can be made adjustable for adjusting different depth adjustment positions or active positions, for example when the depth stop is formed by the head of a screw which can be screwed into the guide device 17. The stop projection 95C is provided, for example, in the free end region of an arm of the scoring unit 31C which projects from the depth adjustment bearing 36.

[0229] In the embodiment of the hand saw 10D, no entrainment device is provided between the saw unit 11 and the scoring unit 31D. The scoring unit 31D is supported in the guide device 17 by the above-mentioned depth adjustment bearing 36 so as to be freely pivotable about the depth adjustment axis TV and independently of the saw unit 11, but must be manually operated by the operator. For this purpose, for example, a scoring device handgrip body 237D is provided, for example in the form of an operating knob which projects upwards from the scoring unit 31D towards the guide device 17. Furthermore, advantageously, a stop projection 95C is provided on the scoring unit 31D for striking against a depth stop 95D.

[0230] For example, a switch 60D is arranged on the hand grip body 237D in order to switch on and / or off the drive motor 32 of the creasing unit 31D. That is, the hand grip body 237D constitutes an operating body 71D for the creasing unit 31D.

[0231] For example, a rotary drive is also possible to adjust the scoring tool 35 between active and inactive positions and / or to adjust its penetration depth into the workpiece. For example, an adjustment motor 72D can be arranged on the scoring device depth adjustment bearing 36, and the scoring tool 35 can be adjusted between various depth adjustment positions by a rotary drive about a depth adjustment axis TV.

[0232] However, a motorized drive concept for adjusting the creasing unit between its inactive position and its active position is also advantageous, as will become apparent in the embodiment of the hand saw 10E. The saw unit 11 of the hand saw is, as described above, manually swiveled by the operator between one of the upper and lower depth adjustment positions by means of the depth adjustment bearing 16, while an adjustment motor 72E is provided for adjusting the creasing unit 31E. A sensor is used as the control body 71E of the entrainment device 70E, which detects the respective rotational or relative position of the saw unit 11 with respect to the guide device 17, i.e. for example the respectively adjusted depth adjustment position. The sensor or control body 71E is connected to the adjustment motor 72E of the creasing unit 31E, i.e. the controlled body, by means of a control connection, for example a wireless or wired control connection not shown in the figures, and controls this adjustment motor. Needless to say, the adjustment motor 72E is also controlled separately, i.e. is decoupled from the control body or sensor 71E. An electrical switching element 99E, in particular, can be provided for the operator to control the adjusting motor 72E individually, for example in order to score the workpiece without making saw cuts or to adjust the scoring unit 31E to an inactive position in order to only make saw cuts with the saw tool 15. Furthermore, a deactivation device 97E, for example likewise an electrical switch, is advantageous for making it possible to operate the adjusting motor 72E in the direction of the inactive position or the upper position of the scoring device tool receptacle 34E and / or to block the power supply of the adjusting motor 72E in the direction of the active position of the scoring device tool receptacle 34E.

[0233] A deactivation device 97E and / or a switching element 99E could easily be provided for controlling the rotationally driven adjusting motor 72D.

[0234] Unlike the above-mentioned creasing units, the creasing unit 31E is not supported so as to be pivotable with respect to the guide device 17, but is supported so as to be displaceable along the depth adjustment axis TVS by a sliding bearing 36E. The spring 39E biases, for example, the creasing device support 80E, on which the creasing device drive motor 32E is held, in the direction of an inactive position in which the creasing tool 35E driven by the creasing device drive motor 32E retreats behind the guide surface 19. The adjustment motor 72E acts in the opposite direction to the spring 39E, i.e. operates the creasing tool 35E in the direction of an active position, so that the creasing tool 35E protrudes in front of the guide surface 19 and can bite into the workpiece. However, the adjustment motor 72E can also be used for depth adjustment, i.e. adjustment of the penetration depth of the creasing tool 35E into the workpiece W.

[0235] The creasing unit 31F of the hand saw 10F is also linearly adjustable, i.e. along a depth adjustment axis TVS, by means of a depth adjustment bearing, in particular a sliding bearing 36F. The sliding bearing 36F comprises, for example, a guide rod or post on which a creasing device support 80F is supported so as to be displaceable relative to the depth adjustment axis TVS. The creasing device support 80F is biased by a spring assembly 39F into an inactive position in which the creasing tool 35F does not protrude in front of the guide surface 19.

[0236] The scoring tool 35F could itself comprise a saw blade or scoring blade, but like the scoring tool 35E, is advantageously a milling tool or milling head. The scoring tool 35F is driven by the scoring device drive motor 32F.

[0237] The scoring unit 31F is also adjustable, independent of the saw unit 11, between its inactive position and one or more active positions.

[0238] Unlike the hand saw 10E, however, the scoring unit 31F can be adjusted between the active and inactive positions not by a motor but manually. A spring assembly 39F loads the scoring device support 80F towards the inactive position. In the direction of the active position, a hand lever or other operating element is provided as an operating body 71F, pivotably supported on the saw unit 11, which operates a force transmission element 90F, for example a Bowden cable, a wire rope, a pneumatic or hydraulic line or the like, by manual operation, which acts on an operating body 72F, for example a hydraulic cylinder, an adjustment drive or the like, in order to adjust the scoring tool 35 towards the active position against the force of the spring assembly 39F, the movement being advantageously limited by a depth stop 95F, which is fixedly arranged on the guide device 17.

[0239] The creasing unit 31X substantially corresponds to the creasing unit 31, but has an alternative depth adjustment means 195. Whereas the depth adjustment means 95 provides the depth adjustment by means of an adjustment body 93 supporting the operating arm 92, the depth adjustment member 199 is arranged on the operated body arm 90, for example on an operating arm protrusion 92B protruding from the operating arm 92, and is supported by the adjustment body 193.

[0240] The depth adjustment member 199 has an operating element 199A connected to or having a threaded portion 199B. The threaded portion 199B is threaded into the threaded receiving portion 92C of the operating arm projection 92B. The threaded portion 199B is disposed on a threaded body 199C, which is threaded into the threaded receiving portion 92C.

[0241] The screw body 199C is connected on the one hand with the operating element 199A and on the other hand receives, for example, a pin-shaped or elongated post body 199D. The free end area of ​​the post body 199D provides an operating surface 192A by which the operated body arm 90 can be operated.

[0242] The two-part structure of the support body 199D and the threaded body 199C has the advantage that the support body 199D can be positioned relative to the threaded body 199C and fixed there, for example glued, for fixing in order to calibrate the first or initial depth adjustment position to be taken by the creasing unit 31X, thereby making it possible, for example, to compensate for manufacturing tolerances. However, it is easily possible for the depth adjustment element 199 to be one piece or for parts of the depth adjustment element, for example the support body 199D and the threaded body 199C, to be one piece.

[0243] Between the operating element 199A or the screw body 199C, which is so to speak the head of the depth adjustment member 199, and the operating arm projection 92B, a spring 199E is preferably arranged, which spring is provided for example for locking and / or frictional engagement, in order to fix, for example clamp or frictionally hold, the depth adjustment member 199 in the respectively adjusted depth adjustment position, so that, for example, unintentional adjustment movements, especially caused by vibrations or the like, can be prevented or reduced.

[0244] The creasing tool depth adjustment means 195 cooperates with a deactivation device 197 and with an adjustment body 193. The adjustment body 193, like the adjustment body 93, projects laterally from the creasing tool support 80. However, unlike the adjustment body 93, the adjustment body 193 is pivotally mounted, i.e. pivotable about a pivot axis or adjustment axis SB. The adjustment axis SB corresponds to the longitudinal axis or longitudinal extension of the adjustment body 193.

[0245] A longitudinal end or bearing end 193A of the adjustment body 193, for example in the form of a bearing pin, is pivotally supported in a bearing receptacle 196, which is fixedly arranged on the support body 80, i.e. pivotally about the adjustment axis SB. The bearing receptacle 196A is for example in the form of a receiving sleeve or receiving tube. The bearing receptacle 196A is provided, for example, in a bearing body 196 which projects from the creasing tool support body 80 transversely, in particular at a right angle, to its longitudinal extension.

[0246] The central part 193C of the adjustment body 193 has an adjustment contour 193D in which the depth adjustment member 199 is supported on the operating surface 192A. The adjustment contour 193D is arranged between the longitudinal end or bearing end 193A and an operating element 193E, for example a hand grip which projects transversely from the adjustment body 93 to the adjustment axis SB and can be comfortably gripped by an operator.

[0247] The adjustment contour 193D has adjustment parts 193G and 193H, which are formed by a peripheral shape of the adjustment contour 193D that is eccentric with respect to the pivot axis or adjustment axis SB. The adjustment part 193G is assigned to the activation position AK of the deactivation device 197 and protrudes further in front of the adjustment axis SB than the adjustment part 193H that is assigned to the deactivation position DK. The adjustment part 193H therefore does not deflect the depth adjustment member 199 so much from the adjustment axis SB, so that the operated body arm 90 is moved farther away from the operating body 71 and the guide link 74 by the spring force of the spring assembly 94 than when it is in the activation position AK. That is, in this case, the adjustment part 193G that protrudes further in front of the adjustment axis SB acts at a position where the operated body 72 is in contact with the operating body 71, which deflects or operates the operated body arm 90 in the direction of the operating body 71 so much.

[0248] The spring 196E is supported on the one hand against a step of the adjustment body 193, on whose periphery the adjustment contour 193D is provided, and on the other hand against a step on the periphery of the bearing body 196, and thus loads the adjustment body in the sense of a frictional engagement or locking in the adjusted deactivation position DK or activation position AK, respectively. For example, the spring 196E presses the radial or flange projection 193B, on whose periphery the adjustment contour 193D is arranged, against a support surface 196B, which is provided, for example, on the motor housing 33A.

[0249] When the sawing drive motor 12 is switched on and off, the creasing device drive motor 32 is periodically switched on and off by the switch 60A. However, in the deactivation position DK of the deactivation device 197, the creasing device drive motor 32 is not required. It does not matter that the creasing device drive motor 32 is powered, even if the creasing unit 31 or 31X is in its deactivation position DK and / or in its inactive position IP. In that case, the creasing tool 35 is driven, but does not protrude in front of the guide surface 19 in the sense of penetrating into the workpiece W and / or is accommodated in a protective housing 29. However, in this situation, it is advantageous for the creasing device drive motor 32 to be switched off, for example, by the switch 32S and / or 32S2. The switch 32S or 32S2 is a component of or assigned to a control device 32T, which is arranged, for example, in the motor housing 33A.

[0250] The motor housing 33A has, for example, a receiving or lower portion 33B and a cover 33C which, in the closed state, encapsulates or encloses the creasing device drive motor 32 and the control device 32T, so that these electrical components are protected from environmental influences.

[0251] The switch 32S or 32S2 comprises or consists of a sensor, for example magnetic or other contactless operating. The switch 32S is arranged outside the motor housing 33A, for example on a support 32H, for example on a circuit board, and communicates with the control device 32T. The switch 32S2, which is provided instead of or in addition to the switch 32S, is accommodated in a protected manner in the inner space of the motor housing 33A and is for example a component of the control device 32T. To operate the switch 32S or 32S2, an operating element 32G, for example a magnetic sensor or the like, is provided. The operating element 32G can be operated by the adjustment body 193. For example, the operating element 32G is accommodated in a holding accommodation, for example a pocket, of the adjustment body 193. The operating element 32G could also be arranged without problem in the adjustment body 93. In both cases, the operating element 32G is axially displaceable, for example along the adjustment axis SA and / or rotatable about the adjustment axis SA or SB, thereby changing its position relative to the sensor or switch 32S or 32S2. The switch 32S communicates with the control device 32T and transmits the respective position of the operating element 32G to the control device. Depending on the respective position of the operating element 32G relative to the switch 32S, the switch or control device 32T switches the creasing device drive motor 32 on or off, i.e. on in the activation position AK of the adjustment body 93 or 193 and off in the deactivation position DK.

[0252] In the following, the scoring tool 35 is described in the embodiments 35A, 35B, 35C and 35D. The above description also applies to the scoring tool 35 in general insofar as the aforementioned scoring tools 35 to 35D have the same components.

[0253] For example, each scoring tool 35 has a blade body 310 having mutually opposing flat surfaces 311, 312. In the case of the scoring tools 35A, 35B, 35C, 35D, the scoring tooth arrangements 300A, 300B, 300C, 300D are arranged on the radial outer periphery of the blade body 310. The scoring tooth arrangements 300A, 300B, 300C, 300D have different numbers of scoring teeth 301-304. For example, score tooth arrangement 300A has score teeth 301, 302, 303, and 304, i.e., a total of four score teeth, whereas score tooth arrangement 300B has only three score teeth 301, 302, and 303, score tooth arrangement 300C has only one score tooth 301, and score tooth arrangement 300D has only two score teeth 301 and 302.

[0254] The blade body 310 has at its center ZV a machine receiving portion 315 for removably mounting to the creasing device tool receiving portion 34 of the saw 10 .

[0255] When the scoring tool 35 is attached to the saw 10, the central axis or rotation axis DV of the scoring tool 35, which is also the rotation axis of the scoring device tool holder 34, passes through the center ZV.

[0256] The score teeth 301-304 project with their main cutting edge 350 in front of the radial periphery 313 of the blade body 310 or scoring tool 35 so that the score teeth are available therefor for cutting into the work surface WO of the workpiece W.

[0257] That is, the groove teeth 301 to 304 protrude in front of the radially outer peripheral surface 314 of the blade body 310. The peripheral surface 314 has a substantially cylindrical mantle shape.

[0258] There is a relatively large angular distance between the score teeth 301-304. For example, in the score tool 35, an angular distance WA of approximately or exactly 90° is provided between the score teeth 301-304. In the case of the score tool 35B, for example, an angular distance WB of 120° is provided between the score teeth 301-303. In the score tool 35C, there is only a single score tooth 301, which results in an angular distance of 360°. If there are two score teeth 301, 302 in the score tooth arrangement 300D, they are preferably equidistant from each other and have an angular distance WD of 180°.

[0259] At this point it should be mentioned that it is of course possible to provide different angular distances between the score teeth. For clarity, for example, the score teeth 303 are shown in dashed lines in the score tool 35A. These score teeth could for example be absent.

[0260] A chip space 316 is provided in front of each of the score teeth 301-304. The chip space 316 is constituted by a recess 317 in the blade body 310, which recess is recessed radially inwards from the radial outer periphery 313 and is in particular formed in the form of an approximately U-shaped or V-shaped recess. Each recess 317 or each chip space 316 has a bottom 318 from which lateral surfaces 319, 320 extend in the direction of the radial outer periphery 313. The lateral surfaces 319, 320 are essentially straight. The lateral surface 319 faces towards the main cutting edge 350 of the respective score tooth 301-304, whereas the lateral surface 320 of the chip space 316 is located, so to speak, opposite this main cutting edge 350. Between the lateral surface 320 and the radial outer periphery 313 or the circumferential surface 314 an arc-shaped transition portion 321 extends.

[0261] Apart from the chip space 316, the radial periphery 313 extends in a circular or annular shape about the central axis of the blade body 310 or the scoring tool 35, i.e. the axis of rotation DV. For example, this arcuate shape extends over an angle of at least 30°, preferably at least 40° or more, relative to the axis of rotation DV, even when there are four scoring teeth 301-304, as in the case of the scoring tool 35A.

[0262] Each of the score teeth 301-304 has a cutting body 330. Each cutting body 330 is attached to the blade body 310, particularly to a side surface or near the side surface 319, by means of an attachment portion 331. For example, the side surface 319 has a step on which the respective cutting body 332 is placed. For example, the attachment portion 331 is received in such a step. The attachment portion 331 of the cutting body 332 is supported on the rear side of the blade body 310.

[0263] In front of the blade body 310, a portion 332 of the cutting body 330 projects radially outward with respect to the axis of rotation DV. A lateral portion 333 of the cutting body 330 projects in front of the flat faces 311, 312. The portions 332, 333 are therefore optimally supported by the mounting portion 331, i.e. mechanically loaded during the working movement of the scoring tool 35, i.e. when the scoring tool cuts into the workpiece W. It is furthermore advantageous if the cutting body 330 has a radially inwardly projecting support projection 334, which is also supported by the blade body 310.

[0264] The scoring teeth 301 to 304, and therefore the cutting body 332, have, for example, a main cutting edge 350 extending parallel to the rotation axis DV or central axis of the scoring tool .

[0265] Extending transversely to the major cutting edge 350 are minor cutting edges 351. The minor cutting edges 351 are, for example, somewhat more than perpendicular to the major cutting edge 350 between which the minor cutting edges 351 are located, i.e., for example, in the range of an angle of 90-110°. For example, the major cutting edge 350 and each adjacent minor cutting edge 351 form an angle 354 of a minimum of 90° and a maximum of 110°. In an embodiment, the angular dimension WI of the angle 354 is, for example, about 7°.

[0266] The minor cutting edge 351 extends radially inward with respect to the axis of rotation DV, with its radially inner end region 355 having a radial distance RD with respect to the major cutting edge 350. The minor cutting edge 351, which extends at a slight or flat oblique angle with respect to the flat surfaces 311, 312, allows the creation of the scores RI at different depths, the lateral width of each score RI increasing as the scoring tool 35 penetrates or penetrates deeper into the workpiece surface WO. The maximum depth Rmax of the scores RI is thus essentially determined by the radial distance RD.

[0267] However, in this case, the creases RI could be made even deeper, i.e. if, for example, the cutting body 332 or, for example, the lateral portion 352 of the crease teeth 301-304 are also formed as cutting edges. The lateral portion 352 extends, for example, parallel to the central plane of the blade body 310 or perpendicular to the axis of rotation DV.

[0268] The score RI created by the score making tool 35 has a score bottom RB from which lateral sides RF extend to the workpiece surface WO. The lateral width of the bottom RB is determined by the lateral distance Q1 of the secondary cutting edge 351 in the region of the major cutting edge 350 or the length of the major cutting edge 350.

[0269] A step 353 is formed between the radially inner end of the side portion 352 and each of the flat surfaces 311 , 312 .

[0270] The saw tool 15 includes, for example, a saw blade 15A. A blade body 370 of the saw blade 15A has mutually opposing flat surfaces 371, 372 and has a sawtooth arrangement 376 including saw teeth 377 on a radial periphery 373 relative to a rotation axis DS about which the saw blade 15A rotates during sawing.

[0271] The number of the saw teeth 377 is greater than the number of the score teeth 301 to 304. Furthermore, the saw teeth 377 have a smaller angular distance with respect to the rotation axis DS about which the saw blade 15A is driven than the score teeth 301 to 304 with respect to the rotation axis DV.

[0272] The saw tool 15 is intended and configured to saw or cut into a workpiece from the underside WU of the workpiece W. The saw blade 15A has at its center ZS a machine receptacle 375 that is passed through by the axis of rotation DS or central axis of the saw blade 15A.

[0273] The radial periphery 373 has an outer diameter D73 that is, for example, three to four times larger than the outer diameter D13 of the periphery 313 of the scoring tool 35.

[0274] The inner diameter D75 of the machine receiving portion 375 of the saw blade 15A is larger than the inner diameter D15 of the machine receiving portion 315 of the scoring tool 35.

[0275] The maximum lateral width of the stitches RI in the region of the workpiece surface can be adjusted by the stitching tool 35 penetrating the workpiece surface WO to different depths. The maximum width of the stitches RI, i.e. the maximum distance between the stitch lateral sides RF, is determined by the lateral distance Q2 that the secondary cutting edges 351 have from each other within the maximum radial distance RD, i.e. the stitches RI can be at most as wide as the lateral distance Q2.

[0276] Such an adaptation is particularly advantageous since it makes it possible to associate the scoring tool 35 with different saw tools or saw blades and to use saw tools which in each case may have different cutting widths or cutting widths (relative to the respective length parallel to the rotation axis DS). Said adaptation is also advantageous in connection with the manufacturing or dimensional tolerances of the saw tools or saw blades and / or in case of different penetration depths of the saw blades into the workpiece or the like.

[0277] The creasing tool 35A can be adjusted with respect to its penetration depth into the workpiece W. The creasing tool tool receptacle 34 is a component of the creasing unit 31 with the creasing tool drive 23A. The creasing tool drive 32A comprises a creasing tool drive motor 32 which drives the creasing tool tool receptacle 34, in which the creasing tool 35 is arranged, either directly or via a transmission, not shown in the schematic diagram. For example, a mounting flange passes through the machine receptacle 315. Between the drive motor 32 and the tool receptacle 34, for example, a stepped transmission can be provided, so that the rotation axis of the tool receptacle 34 and the motor rotation axis of the drive motor 32 are not aligned, in particular the motor rotation axis of the drive motor 32 has a greater distance to the area of ​​the creasing tool 35 which is intended to penetrate into the workpiece W than the drive rotation axis DV.

[0278] The sawing tool receptacle 14, in which the machine receptacle 375 is arranged, can be driven by the sawing drive motor 12, for example directly or via a transmission, which is not shown in the drawings.

[0279] Like the saw unit 11, the scoring unit 31 is movably arranged in a guide device 17, for example in a guide body 18 of the guide device 17. A guide surface 19 of the guide body is intended for guiding along the workpiece surface WO. The sawing tool receptacle 14 and the scoring tool receptacle 34 are depth-adjustable with respect to the guide surface 19, so that they protrude more or less in front of the guide surface 19. The penetration depth of the scoring tool 35 and the saw tool 15 into the workpiece W is thereby adjustable.

[0280] In that case, the saw tool 15 is adjusted or can be adjusted so that its main cutting edge 380 cuts into the workpiece W from the underside WU of the workpiece. In addition to that, secondary cutting edges 381 extend alongside the main cutting edge 380 at an angle to this main cutting edge, which create, as it were, the lateral sides of the saw cut SAE with which the saw tool 15 can cut into the workpiece W. In each case, the saw cut SAE has a saw cut width SBB which is brought about on the one hand by the length of the main cutting edge 380 and, on the other hand, also by the secondary cutting edges 381 being inclined obliquely to the main cutting edge 380, as for example the secondary cutting edge 351 to the main cutting edge 350.

[0281] Since the saw teeth 377 cut into the workpiece W from the lower workpiece surface WU and therefore exit the workpiece at the upper workpiece surface WO, this entails the risk that the lateral sides of the saw incision SAE will be torn off in the region of the upper workpiece surface WO. In that case, the scoring tool 35 can be or is adjusted in terms of its penetration depth into the workpiece W or the extent to which the scoring tool 35 projects in front of the guide surface 19, so that the incision RI at the workpiece surface WO has a incision width RBB that is greater than the saw incision width SBB. The saw tool 15 or the saw blade 15A then exits the workpiece W between the lateral sides RF of the incision RI at the workpiece surface WO. That is to say, for example, if a covering or coating, a lining or the like is arranged on the workpiece surface WO, the covering or coating will not be affected or damaged by the saw teeth 377 exiting from the workpiece W.

[0282] The inclination of the lateral sides RF has the advantage that the grooves RI have a slight phase or bevel in the transition region to the workpiece surface WO.

[0283] The sawing drive motor 12 has an outer diameter D12, and the creasing device drive motor 32 has an outer diameter D32. With respect to the outer diameters of the creasing tool 35 or saw tool 15 driven respectively, the outer diameter D12 of the sawing drive motor 12 is smaller than the outer diameter D32 of the creasing device drive motor 32. Thus, for example, the ratio of the circumference D73 to the circumference D12, or the quotient of the circumference D73 to the circumference D12, is greater than the ratio of the circumference D13 to the circumference D32, or the quotient of the circumference D13 to the circumference D32, of the creasing device drive motor 32.

[0284] The adjusting means 12B and / or 32B can be used to adjust, for example, the rotational speeds of the sawing tool receptacle 14 and the creasing machine tool receptacle 34. It is possible for the creasing machine tool receptacle 34 to always operate at the same rotational speed, while the rotational speed of the sawing tool receptacle 14, e.g. the rotational speed of the sawing drive motor 12, is adjustable. The creasing machine tool receptacle 34 is configured to be driven or to be driven at a rotational speed that is at least twice as high as the sawing tool receptacle 14, preferably three times as high or four times as high.

[0285] Furthermore, the directions of rotation VS, VR of the tool receptacles 14, 34 are opposite. The tool receptacle 34 for the scoring tool 35 is driven, for example, with a direction of rotation VR which corresponds to a homocentric rotary saw. The direction of rotation VR therefore serves to feed or advance the scoring tool 35, so to speak, forward or along the workpiece W, the sawing machine 10.

[0286] The direction of rotation VS of the sawing tool holder 14 is such that the guide surface 19 exerts a force in the direction of the workpiece surface WO.

[0287] In the case of the cutting body 330, the minor cutting edge and the major cutting edge are straight, but it is alternatively possible for the major cutting edge and the minor cutting edge to be curved, e.g. extending concavely, convexly, or even combinations thereof, or for the minor cutting edge and / or the major cutting edge to have portions with different inclinations and / or curvatures.

[0288] For example, the cutting body 330B has a main cutting edge 350 that extends linearly, whereas the sub-cutting edge 351B between which the main cutting edge 350 is disposed has edge portions 360B, 361B. The edge portion 360B extends linearly, for example. The edge portion 360B is, for example, perpendicular to the main cutting edge 350. In contrast, the portion 361B is flat and inclined obliquely with respect to the portion 360B, and has an angle of, for example, 103 to 105 degrees with respect to the main cutting edge 350.

[0289] The cutting body 330C also has a major cutting edge 350, but has a minor cutting edge 351C with portions 360C and 361C. The portion 360C is concave with respect to a central plane MI extending between the flats 311 and 312 of the blade body 310, but has a smaller curvature than the portion 361C.

[0290] To clarify the convex shape, cutting body 330D is shown in which minor cutting edge 351D is concave with respect to central plane MI.

[0291] Instead of the straight main cutting edge 350, for example, a main cutting edge 350D extending in a convex shape in a direction away from the blade body 310 may be provided.

[0292] Furthermore, it is advantageous if the cutting bodies or scoring teeth of the scoring tool are, so to speak, symmetrical, i.e. form cutting edges on opposite sides, thus in the region of each flat surface 311, 312. However, it is also possible for the scoring teeth or cutting bodies to have cutting edges only on one flat surface 311 or 312. This is shown diagrammatically in the cutting body 330B. For example, instead of the secondary cutting edge 351B on the right side of the drawing, in the cutting body 330B, a side surface 359 that does not project in front of the flat surface 311 can be provided, and instead of the secondary cutting edge 351B on the left side of the drawing, the cutting body 330B trailing or preceding in the circumferential direction of the blade body 310 or the scoring tool 35 can be provided with a side surface 359 that does not project in front of the flat surface 312. The invention as originally claimed in the application is set forth below. [1] A portable hand-held saw (10) comprising a saw unit (11) having a sawing tool receptacle (14) for a saw tool (15), in particular a saw blade, and a sawing drive motor (12) for driving the sawing tool receptacle (14), and a guide device (17), wherein the guide device comprises a guide body (18) having a guide surface (19) extending along a longitudinal axis (L) for guiding the hand-held saw (10) in a workpiece (W) or a guide rail (200) along a working direction (AR), and a guide surface (19A) of the guide body opposite to the guide surface (19) for guiding the sawing tool receptacle (14), in particular the saw unit (11), 11) A portable hand-held saw machine, the entire of which is movably supported between an upper depth adjustment position (OT) and at least one lower depth adjustment position (UT) by means of sawing depth adjustment bearings (16), and in said at least one lower depth adjustment position, said sawing tool holder (14) is adjusted closer to said guide surface (19) in said at least one lower depth adjustment position than in said upper depth adjustment position (OT), so that in said lower depth adjustment position, said saw tool (15) projects in front of said guide surface (19) more in front of said guide surface (19) in said lower depth adjustment position than in said upper depth adjustment position (OT) for making saw cuts (SAE) in said workpiece (W), The portable hand-held saw comprises a creasing unit (31) arranged in front of the saw unit (11) in the guide device (17) with respect to the working direction (AR) and having a creasing tool holder (34) for a creasing tool (35), in particular a creasing tool saw blade, and a creasing tool drive (32A) for driving the creasing tool holder (34), the creasing tool holder (34) being arranged in the guide device (17) or relative to the guide device (17) separately from the sawing depth adjustment bearing (16). a creasing tool (35) arranged in the creasing tool tool holder for cutting a creasing mark (RI) in the workpiece (W) that is arranged in the creasing tool tool holder is supported movably between at least one active position (AP) in which the creasing tool protrudes in front of the guide surface (19) and an inactive position (IP) in which the creasing tool (35) retracts behind the guide surface (19), for cutting a creasing mark (RI) in the workpiece (W) that is arranged in the working direction (AR) of the saw cut (SAE) to be cut, by means of a creasing tool depth adjustment bearing (36). [2] The handheld saw (10) according to [1], characterized in that the handheld saw has a driving device (70) for providing a driving connection between the sawing tool storage part (14) and the creasing device tool storage part (34), and when the sawing tool storage part (14) is moved between the depth adjustment positions (OT, UT), in particular between the upper depth adjustment position and the at least one lower depth adjustment position (UT), the driving device drives the creasing tool storage part (34) between the inactive position (IP) and the at least one active position (AP), and the driving device (70) has an operating body (71) arranged on the saw unit (11) for operating an operated body (72) arranged on the creasing unit (31). [3] The handheld saw described in [2], characterized in that the entraining device (70) entrains the creasing device tool holder (34) in a first direction of movement of the sawing tool holder (14) from the upper depth adjustment position (OT) in the direction of the at least one lower depth adjustment position (UT) and / or in a second direction of movement from the at least one lower adjustment position (UT) in the direction of the upper depth adjustment position (OT). [4] The hand saw of [2] or [3], wherein the entrainment device (70) connects the creasing device tool storage section (34) in which a creasing tool (35) is arranged and the sawing tool storage section (14) in which a saw tool (15) is arranged at a creasing device activation section (76) to each other, whereby the sawing tool storage section (14) is adjustable to a lower depth adjustment position (RT) in which the saw tool (15) does not protrude in front of the guide surface (19), and the creasing device tool storage section (34) is adjusted to the at least one active position (AP) in which the creasing tool (35) protrudes in front of the guide surface (19) to enter the workpiece (W) by adjusting the creasing device tool storage section (34) to the lower depth adjustment position (UT). [5] The handheld saw according to [4], characterized in that the handheld saw has a groove-only depth stop device (78) which has a stopper member (79) which is adjustable between a stopper position (TA) in which the stopper member (79) abuts against a counter stopper (79A) in a lower depth adjustment position (UT) of the sawing tool holder (14) where sawing is not intended, and a release position (TF) in which the stopper member (79) is movable alongside the counter stopper (79A), thereby allowing the sawing tool holder (14) to be adjusted to a lower depth adjustment position (UT) in which the saw tool (15) protrudes in front of the guide surface (19). [6] The handheld saw according to any one of [2] to [5], characterized in that the entrainment device (70) connects the sawing tool storage section (14) in which a saw tool (15) is arranged and the creasing device tool storage section (34) in which a creasing tool (35) is arranged to each other in a creasing device holding section (77), whereby the sawing tool storage section (14) is adjustable between at least two lower depth adjustment positions (UT) in which the saw tool (15) protrudes to different degrees in front of the guide surface (19) and / or the sawing tool storage section (14) is adjusted to different proximity to the guide device (17) or the guide surface (19), and the creasing device tool storage section (34) remains in substantially the same active position (AP). [7] A handheld saw according to any one of claims [2] to [6], characterized in that the entraining device (70) has a deactivation device (97, 197) for deactivating the entraining connection between the sawing tool storage part (14) and the creasing device tool storage part (34), and the creasing device tool storage part (34) remains in the inactive position (IP) at a deactivation position (DK) of the deactivation device (97) when the sawing tool storage part (14) is moved between depth adjustment positions (OT, UT), and is operated to adjust between the inactive position (IP) and the at least one active position (AP) at an activation position (AK) of the deactivation device (97). [8] A hand saw as described in [7], characterized in that the deactivation device (97, 197) has in particular an electrical switching element for switching on the creasing device drive (32A), in particular the creasing device drive motor (32), in the activation position (AK) and for switching off the creasing device drive (32A) in the deactivation position (DK). [9] A hand saw as described in any one of [1] to [8], characterized in that the hand saw has at least one protective housing (29), in particular a protective hood, for the saw tool (15) and / or the scoring tool (35), which accommodates parts of the saw tool (15) or the scoring tool (35), respectively, that do not protrude in front of the guide surface (19) in the direction of the workpiece (W) to be processed.

[10] A handheld saw machine as described in [9], in which the operating body (71) of the saw unit (11) for operating the operated body (72) arranged in the groove cutting unit (31) is arranged outside the protective housing (29).

[11] A handheld saw as described in any one of [1] to

[10] , characterized in that the handheld saw has a creasing device depth adjustment means (95, 195) for adjusting the distance between the creasing device tool storage section (34) and the guide device (17) or the guide surface (19) in at least one active position (AP), and / or the penetration depth of the creasing tool (35) into the workpiece (W).

[12] The hand saw of

[11] , characterized in that an operating distance (BA) exists between the creasing device tool storage section (34) and an operating surface through which the operated body (72) of the entrainment device (70) engages or comes into contact with the operating body (71) of the entrainment device (70), and the creasing device depth adjustment means (95) is configured to adjust the operating distance (BA), whereby in the at least one active position (AP), the distance between the creasing device tool storage section (34) and the guide device (17) or the guide surface (19), and / or the penetration depth of the creasing tool (35) into the workpiece (W) is adjustable or adjusted by the adjustment of the operating distance (BA).

[13] The hand saw according to

[11] or

[12] , characterized in that the creasing device depth adjustment means (95, 195) has an adjustment body (93, 193) which is adjustable between at least two adjustment positions in order to adjust different distances between the creasing device tool holder (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP), and the adjustment body (93, 193) is configured to adjust the deactivation device (97, 197) between the activation position (AK) and the deactivation position (DK).

[14] The hand saw of

[13] , characterized in that the creasing device depth adjustment means (95, 195) is supported by an adjustment contour of the adjustment body and is adjustable between at least two depth adjustment positions in order to adjust the distance between the creasing device tool receptacle and the guide device or the guide surface and / or the penetration depth of the creasing tool into the workpiece in the at least one active position.

[15] The hand saw described in

[14] , characterized in that the adjustment contour has an adjustment part assigned to the activation position (AK) and an adjustment part assigned to the deactivation position (DK), and the adjustment part variably operates the depth adjustment member to adjust the penetration depth of the groove cutting tool into the workpiece by adjusting, in particular by rotating, the adjustment body.

[16] A hand-held saw described in any one of

[13] to

[15] , characterized in that the adjustment body (93, 193) has an adjustment surface (93B, 193B) for acting on an operating surface (92A, 192A) of the operated body (72), and the adjustment surface is arranged on the operated body (72) or is operatively connected to the operated body (72).

[17] The hand saw described in

[16] , characterized in that by adjusting the adjustment body (93, 193) between adjustment positions assigned to the activation position (AK) and the deactivation position (DK), the adjustment surface (93B, 193B) of the adjustment body (93, 193) can be engaged or disengaged with the operating surface (92A) of the operated body (72), or the operating surface of the operated body (72) is adjusted to a position assigned to one of the active positions (AP) or the inactive positions (IP).

[18] A handheld saw machine as described in any one of

[13] to

[17] , characterized in that the adjustment bodies (93, 193) are adjustable, in particular displaceable and / or rotatable, between an inactive position assigned to the deactivation position (DK) in which the controlled body (72) does not engage or come into contact with the control body (71) and an active position assigned to the activation position (AK) in which the controlled body (72) comes into contact or engages with the control body (71) while remaining in their respective adjustment positions.

[19] A handheld saw as described in any one of

[13] to

[18] , characterized in that the creasing device depth adjustment means (95, 195) has a creasing device depth stop (95D, 95F) which is adjustable between at least two stop positions in which the creasing device tool storage section (34) has different distances from the guide device (17) or the guide surface (19) and / or in which the creasing tool (35) protrudes in front of the guide surface (19) by different amounts.

[20] A handheld saw described in any one of [2] to

[19] , characterized in that the operating body (71) and the operated body (72) are components of a link guide (73), one component of the operating body (71) and the operated body (72) is a guide link (74), and the other component is a link follower (75) guided by the guide link (74).

[21] The handheld saw of

[20] , characterized in that the guide link (74) has a creasing device activating portion (76) and a creasing device holding portion (77), the creasing device activating portion (76) effects adjustment of the creasing device tool holder (34) between the inactive position (IP) and the at least one active position (AP) when the sawing tool holder (14) is adjusted between the depth adjustment positions (OT, UT), and the creasing device holding portion (77) effects holding of the creasing device tool holder (34) in a predetermined active position (AP) regardless of adjustment of the sawing tool holder (14) between the depth adjustment positions (OT, UT).

[22] The hand saw of

[20] or

[21] , wherein the link follower (75) comprises a slider or roller and / or is loaded into contact with the guide link (74) by a spring assembly and / or is disposed on an arm.

[23] The handheld saw described in any one of [1] to

[22] , characterized in that the handheld saw has a sawing depth adjustment device (62) for adjusting at least one of the lower depth adjustment positions of the sawing tool storage section (14), the sawing depth adjustment device (62) has a depth stopper holder, in particular a depth stopper guide (63), and a depth adjustment stopper (64) against which the saw unit (11) strikes when adjusted using the sawing depth adjustment bearing (16) can be fixed to the depth stopper guide at at least two depth stopper positions.

[24] The hand saw described in

[23] , characterized in that the guide link (74) and the depth stop holder, particularly the depth stop guide (63), have arcuately extending portions arranged side by side.

[25] A handheld saw described in any one of [1] to

[24] , characterized in that the sawing depth adjustment bearing (16) is a swivel bearing that supports the sawing tool storage part (14) so ​​that it can rotate around a depth adjustment axis (TS), and / or the creasing device depth adjustment bearing (36) is a swivel bearing that supports the creasing device tool storage part (34) so ​​that it can rotate around the depth adjustment axis (TV).

[26] The handheld saw described in

[25] , characterized in that the depth adjustment shaft (TV) of the groove cutting device depth adjustment bearing (36) is arranged in the guide device (17) between the groove cutting device tool storage section (34) and the sawing tool storage section (14), and in particular passes through the sawing tool (15) when the sawing tool is arranged in the sawing tool storage section (14).

[27] The handheld saw according to

[25] or

[26] , characterized in that in the guide device (17), the sawing depth adjustment bearing (16) is arranged behind the sawing tool holder (14) in the working direction (AR) and / or the creasing device depth adjustment bearing (36) is arranged behind the creasing device tool holder (34) in the working direction (AR), and / or the creasing device depth adjustment bearing (36) is arranged in the guide device (17) between the creasing device tool holder (34) and the sawing tool holder (14) in the working direction (AR).

[28] A handheld saw as described in any one of [1] to

[27] , characterized in that the sawing tool storage (14), in particular the entire saw unit (11), and / or the creasing device tool storage (34), in particular the entire creasing unit (31), is rotatably supported in the guide device (17) about a bevel-cutting axis (G) using a bevel-cutting bearing assembly (21A), the bevel-cutting axis being parallel to the working direction (AR) and / or extending parallel to a longitudinal axis (L) of the guide device (17) extending parallel to the working direction (AR).

[29] A hand saw according to any one of claims [1] to

[28] , characterized in that the sawing depth adjustment bearing (16) and / or the creasing device depth adjustment bearing (36) are arranged on a support (40) formed in particular as a cover hood and / or a protective housing (29), the support being arranged between the front bevel cutting bearing in the working direction (AR) of the bevel cutting bearing assembly (21A) and the rear bevel cutting bearing (21, 22) in the working direction (AR).

[30] A handheld saw as described in any one of [2] to

[29] , characterized in that the operated body (72) is supported rotatably around the depth adjustment axis (TV) of the creasing device depth adjustment bearing (36) in order to adjust the distance between the creasing device tool storage section (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP), and / or to activate and deactivate the engagement connection between the sawing tool storage section (14) and the creasing device tool storage section (34).

[31] The handheld saw described in any one of [2] to

[30] , characterized in that the operated body (72) is arranged on an operated body arm (90) that protrudes in front of the depth adjustment shaft (TV) of the creasing device depth adjustment bearing (36) and can be moved to at least two different rotation positions relative to the depth adjustment shaft (TV) by an adjustment body (93), and the different rotation positions make it possible to adjust the distance between the creasing device tool storage section (34) and the guide device (17) or guide surface (19), and / or the distance that the creasing tool (35) protrudes in front of the guide surface (19).

[32] A hand saw according to any one of claims [2] to

[31] , characterized in that the operated body arm (90) is spring-loaded by a spring assembly (94) towards or away from the operating body (71) to a contact position, and / or that an operating surface (92B) is arranged on the operated body arm (90), in particular on an operating arm (92) protruding at an angle from the operated body arm (90), and that the operating surface cooperates with an adjustment body (93), by means of which different angular positions of the operated body (72) relative to the depth adjustment axis (TV) can be adjusted, and / or that the adjustment body makes it possible to create and / or cancel a coupling between the sawing tool storage part (14) and the creasing device tool storage part (34).

[33] The hand saw according to any one of [1] to

[32] , characterized in that the hand saw has a lateral adjustment device (87) for adjusting the lateral distance of the sawing tool holder (14) and / or the creasing device tool holder (34) transverse to a longitudinal axis (L) parallel to the working direction (AR), whereby by adjusting the lateral distance of the sawing tool holder (14) relative to the longitudinal axis (L) and / or by adjusting the lateral distance of the creasing device tool holder (34), the creasing tool (35) and the saw tool (15) can be brought into a position in which they are aligned with each other in a straight line relative to the longitudinal axis (L).

[34] A hand saw as described in

[33] , characterized in that the lateral adjustment device (87) and / or a manually operable, in particular a rotatable, operating element (87B) of the lateral adjustment device (87) is arranged in the creasing device depth adjustment bearing (36) and / or is passed through by the depth adjustment shaft (TV) of the creasing device depth adjustment bearing (36).

[35] A handheld saw machine as described in any one of [1] to

[34] , characterized in that the sawing tool housing (14), in particular the saw unit (11), is loaded into the upper depth adjustment position (OT) by a saw unit spring assembly (20), whereby an operator operates the sawing tool housing (14), in particular the saw unit (11), in the direction of the lower depth adjustment position against the force of the saw unit spring assembly (20) to make a saw cut (SAE) into the workpiece (W).

[36] A handheld saw as described in any one of [1] to

[35] , characterized in that the creasing device tool storage (34), in particular the creasing unit (31), is biased to the inactive position (IP) by a creasing unit spring assembly, which is separate from a spring assembly that loads the saw unit (11) or the sawing tool storage (14) to the upper depth adjustment position (OT).

[37] The handheld saw described in any one of [1] to

[36] , characterized in that the handheld saw has a creasing device adjustment drive device for adjusting the creasing device tool storage section (34) between the active position (AP) and the inactive position (IP).

[38] The hand saw according to

[37] , characterized in that the entrainment device (70) forms part of the creasing device adjustment drive or the creasing device adjustment drive and / or the creasing device adjustment drive in particular comprises an adjustment electric motor.

[39] The hand saw described in any one of [1] to

[38] , characterized in that the hand saw has an operating element (26) arranged on the saw unit (11) and operable by an operator, in particular an operating handgrip that can be held by the operator, in order to adjust the creasing device tool storage section (34) between the active position (AP) and the inactive position (IP).

[40] The hand saw of

[39] , characterized in that the operating element comprises an electric sensor or switch for the creasing device adjustment drive arranged on the saw unit (11), and / or an actuator movably supported on the saw unit (11) and manually operable by an operator, the actuator being movably connected to a force transmission element, in particular a Bowden cable, for transmitting a force to the creasing device tool receptacle (34) in order to adjust the creasing device tool receptacle (34) between the inactive position (IP) and the at least one active position (AP).

[41] A handheld saw described in any one of [1] to

[40] , characterized in that the creasing unit (31) has a creasing device drive motor (32) separate from the sawing drive motor (12).

[42] The hand saw of

[41] , characterized in that the hand saw has at least one switch for switching the creasing device drive motor (32) on and off, the switch comprising a switch (60A) for switching the sawing drive motor (12) on and off, particularly arranged on the saw unit (11), and / or a switch separate from the switch (60A) for switching the sawing drive motor (12) on and off.

[43] A handheld saw as described in any one of [1] to

[42] or the preamble of [1], characterized in that the handheld saw has a flexible electrical connection line (68) between the saw unit (11) and the creasing unit (31) for supplying electrical energy to the creasing unit (31).

[44] The handheld saw described in

[43] , characterized in that the connecting line (68) has a connecting portion (68A, 68B) connected to the saw unit (11) and a connecting portion (68A, 68B) connected to the creasing unit (31), the connecting portions (68A, 68B) being connected to each other by a connecting portion (68C) and having a distance to the sawing tool storage portion (14) and the creasing device tool storage portion (34) that is greater than the connecting portion (68C), whereby the connecting line (68) extends around a space of the handheld saw (10) that is open on the opposite side to the tool storage portion.

[45] A sawing machine as described in any one of [1] to

[44] , characterized in that the ratio of the outer diameter (D73) of the sawing tool (15) formed as a saw blade (15A) to the outer diameter (D12) of the sawing drive motor (12) is greater than the ratio of the outer diameter (D13) of the scoring tool (35) formed as a saw blade to the outer diameter (D32) of the scoring device drive motor (32), in particular at least 1.5 times greater, preferably 2 times greater, and more preferably at least 2.5 times greater.

Claims

1. A portable hand-held saw (10) comprising a saw unit (11) having a sawing tool storage (14) for a saw tool (15) and a sawing drive motor (12) for driving the sawing tool storage (14), and a guide device (17), wherein the guide device comprises a guide body (18) having a guide surface (19) extending along a longitudinal axis (L) for guiding the hand-held saw (10) along a workpiece (W) or a guide rail (200) in a working direction (AR), and on an upper surface (19A) of the guide body opposite to the guide surface (19), the entire sawing tool storage (14) is aligned with the sawing tool storage (14) so ​​as to be aligned with the sawing tool storage (14). a sawing tool receptacle (14) adapted to be movable between an upper depth adjustment position (OT) and at least one lower depth adjustment position (UT) by means of a depth adjustment bearing (16), and in said at least one lower depth adjustment position, said sawing tool receptacle (14) is adjusted closer to said guide surface (19) in said at least one lower depth adjustment position than in said upper depth adjustment position (OT), so that said sawing tool (15) protrudes from said guide surface (19) more in said lower depth adjustment position than in said upper depth adjustment position (OT) for making a sawing cut (SAE) in said workpiece (W), The portable hand-held saw machine comprises a creasing unit (31) having a creasing device tool holder (34) for a creasing tool (35) and a creasing device drive (32A) for driving the creasing device tool holder (34), the creasing device tool holder (34) being arranged in front of the saw unit (11) in the guide device (17) with respect to the working direction (AR), the creasing device tool holder (34) being connected to the sawing depth adjustment bearing (32A) in the guide device (17) or relative to the guide device. a creasing tool (35) arranged in the creasing tool tool receptacle for cutting a creasing mark (RI) in the workpiece (W) in front of the saw cut (SAE) to be cut in the working direction (AR) is supported movably between at least one active position (AP) in which the creasing tool protrudes from the guide surface (19) and an inactive position (IP) in which the creasing tool (35) retracts above the guide surface (19), by means of a creasing tool depth adjustment bearing (36) separate from the creasing tool (16); the handheld saw machine has an entrainment device (70) for providing an entrainment connection between the sawing tool storage part (14) and the creasing device tool storage part (34), and when the sawing tool storage part (14) moves between the depth adjustment positions (OT, UT), the entrainment device entrains the creasing tool storage part (34) between the inactive position (IP) and the at least one active position (AP), and the entrainment device (70) has an operating body (71) arranged on the saw unit (11) for operating an operated body (72) arranged on the creasing unit (31); The portable hand-held saw (10) is characterized in that the sawing depth adjustment bearing (16) and the creasing device depth adjustment bearing (36) are arranged separately from each other on the guide device (17).

2. 2. The hand saw according to claim 1, characterized in that the entraining device (70) entrains the creasing device tool receptacle (34) in a first direction of movement of the sawing tool receptacle (14) from the upper depth adjustment position (OT) in the direction of the at least one lower depth adjustment position (UT) and / or in a second direction of movement from the at least one lower depth adjustment position (UT) in the direction of the upper depth adjustment position (OT).

3. 3. The hand saw according to claim 1, wherein the entrainment device (70) connects the creasing device tool storage (34) in which the creasing tool (35) is arranged and the sawing tool storage (14) in which the sawing tool (15) is arranged to each other at a creasing device activation section (76), whereby the sawing tool storage (14) is adjustable to a lower depth adjustment position (UT) in which the sawing tool (15) does not protrude from the guide surface (19), and the creasing device tool storage (34) is adjusted to the at least one active position (AP) in which the creasing tool (35) protrudes from the guide surface (19) to enter the workpiece (W) by adjusting the creasing device tool storage (34) to the lower depth adjustment position (UT).

4. 4. The hand saw according to claim 3, characterized in that the hand saw has a creasing-only depth stop device (78), the creasing-only depth stop device (78) having a stop member (79) which is adjustable between a stop position (TA) in which the stop member (79) abuts against a counter stop (79A) in a lower depth adjustment position (UT) of the sawing tool holder (14), in which no sawing is intended, and a release position (TF) in which the stop member (79) is movable alongside the counter stop (79A), whereby the sawing tool holder (14) can be adjusted to a lower depth adjustment position (UT) in which the saw tool (15) protrudes from the guide surface (19).

5. 5. The hand saw according to claim 1, wherein the entrainment device (70) connects the sawing tool receptacle (14) in which a saw tool (15) is arranged and the creasing device tool receptacle (34) in which a creasing tool (35) is arranged to one another in a creasing device holder (77), so that the sawing tool receptacle (14) is adjustable between at least two lower depth adjustment positions (UT) in which the saw tool (15) protrudes from the guide surface (19) to different degrees and / or the sawing tool receptacle (14) is adjusted to different proximity to the guide device (17) or to the guide surface (19), and the creasing device tool receptacle (34) remains in substantially the same active position (AP).

6. 6. The hand saw according to claim 1, wherein the entrainment device (70) has a deactivation device (97, 197) for deactivating the entrainment connection between the sawing tool receptacle (14) and the creasing device tool receptacle (34), the creasing device tool receptacle (34) remaining in the inactive position (IP) in a deactivation position (DK) of the deactivation device (97) when the sawing tool receptacle (14) is moved between the depth adjustment positions (OT, UT) and the creasing device tool receptacle (34) is operated in an activation position (AK) of the deactivation device (97) for adjustment between the inactive position (IP) and the at least one active position (AP).

7. 7. The hand saw according to claim 6, characterized in that the deactivation device (97, 197) has a switching element for switching on the creasing device drive (32A) in the activation position (AK) and for switching off the creasing device drive (32A) in the deactivation position (DK).

8. 8. The hand saw according to claim 7, characterized in that the hand saw has at least one protective housing (29) for the saw tool (15) and / or the scoring tool (35), which accommodates parts of the saw tool (15) or the scoring tool (35), respectively, that do not protrude from the guide surface (19) in the direction of the workpiece (W) to be processed.

9. 9. The hand saw of claim 8, wherein the operating body (71) of the saw unit (11) for operating the operated body (72) arranged in the creasing unit (31) is arranged outside the protective housing (29).

10. 10. The hand saw according to claim 9, characterized in that the hand saw has a creasing device depth adjustment means (95, 195) for adjusting the distance between the creasing device tool receptacle (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP).

11. 11. The hand saw of claim 10, characterized in that an operating distance (BA) exists between the creasing device tool receptacle (34) and an operating surface by means of which the operated body (72) of the entrainment device (70) engages or comes into contact with the operating body (71) of the entrainment device (70), and the creasing device depth adjustment means (95) is formed for adjusting the operating distance (BA), whereby in the at least one active position (AP), the distance between the creasing device tool receptacle (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) is adjustable or adjusted by the adjustment of the operating distance (BA).

12. 12. A hand saw according to claim 10 or 11, characterized in that the creasing device depth adjustment means (95, 195) has an adjustment body (93, 193) which is adjustable between at least two adjustment positions in order to adjust different distances between the creasing device tool receptacle (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP), and the adjustment body (93, 193) is formed to adjust the deactivation device (97, 197) between the activation position (AK) and the deactivation position (DK).

13. 13. A hand saw as claimed in claim 12, characterized in that the creasing tool depth adjustment means (95, 195) is supported on an adjustment contour of the adjustment body and is adjustable between at least two depth adjustment positions in order to adjust in the at least one active position the distance between the creasing tool tool receptacle and the guide device or the guide surface and / or the penetration depth of the creasing tool into the workpiece.

14. 14. The hand saw according to claim 13, characterized in that the adjustment contour has an adjustment part assigned to the activation position (AK) and an adjustment part assigned to the deactivation position (DK), which by adjusting the adjustment body, variously operates the depth adjustment means to adjust the penetration depth of the scoring tool into the workpiece.

15. The hand saw according to any one of claims 12 to 14, characterized in that the adjusting body (93, 193) has an adjusting surface (93B, 193B) for acting on an operating surface (92A, 192A) of the operated body (72), and the adjusting surface is arranged on the operated body (72) or is operatively connected to the operated body (72).

16. 16. The hand saw of claim 15, wherein the adjustment surface (93B, 193B) of the adjustment body (93, 193) can be engaged or disengaged with the operating surface (92A) of the operated body (72) by adjusting the adjustment body (93, 193) between adjustment positions assigned to the activation position (AK) and the deactivation position (DK), or the operating surface of the operated body (72) is adjusted to a position assigned to one of the active positions (AP) or the inactive positions (IP).

17. The hand saw machine according to any one of claims 12 to 16, characterized in that the adjustment body (93, 193) is adjustable between an inactive position assigned to the deactivation position (DK) in which the controlled body (72) does not engage or come into contact with the control body (71) and an active position assigned to the activation position (AK) in which the controlled body (72) comes into contact or engages with the control body (71) while remaining in the respective adjustment positions.

18. 18. A hand saw according to claim 12, wherein the creasing tool depth adjustment means (95, 195) comprises a creasing tool depth stop (95D, 95F) which is adjustable between at least two stop positions in which the creasing tool tool receptacle (34) has different distances relative to the guide device (17) or to the guide surface (19) and / or in which the creasing tool (35) projects to different extents in front of the guide surface (19).

19. A hand saw according to any one of claims 1 to 18, characterized in that the operating body (71) and the operated body (72) are components of a link guide (73), one component of the operating body (71) and the operated body (72) is a guide link (74), and the other component is a link follower (75) guided by the guide link (74).

20. 20. The hand saw of claim 19, wherein the guide link (74) has a creasing device activating portion (76) and a creasing device holding portion (77), the creasing device activating portion (76) effects adjustment of the creasing device tool holder (34) between the inactive position (IP) and the at least one active position (AP) when the sawing tool holder (14) is adjusted between the depth adjustment positions (OT, UT), and the creasing device holding portion (77) effects holding of the creasing device tool holder (34) in a predetermined active position (AP) independent of adjustment of the sawing tool holder (14) between the depth adjustment positions (OT, UT).

21. 21. A hand saw as claimed in claim 19 or claim 20, characterised in that the link follower (75) comprises a slider or roller and / or is loaded into contact with the guide link (74) by a spring assembly and / or is located on an arm.

22. 22. The hand saw according to claim 21, characterized in that the hand saw has a sawing depth adjustment device (62) for adjusting at least one of the lower depth adjustment positions of the sawing tool storage part (14), the sawing depth adjustment device (62) having a depth stop holder, and a depth adjustment stop (64) against which the saw unit (11) strikes when adjusted using the sawing depth adjustment bearing (16) can be fixed to the depth stop holder in at least two depth stop positions.

23. 23. The hand saw of claim 22, wherein said guide link (74) and said depth stop holder have side-by-side arcuately extending portions.

24. 24. The hand saw according to claim 1, wherein the sawing depth adjustment bearing (16) is a swivel bearing which supports the sawing tool receptacle (14) so ​​that it can be swiveled about a depth adjustment axis (TS) and / or the creasing device depth adjustment bearing (36) is a swivel bearing which supports the creasing device tool receptacle (34) so ​​that it can be swiveled about the depth adjustment axis (TV).

25. 25. A hand saw according to claim 24, characterized in that the depth adjustment axis (TV) of the creasing tool depth adjustment bearing (36) passes through the saw tool when it is arranged in the guide device (17) between the creasing tool tool receptacle (34) and the sawing tool receptacle (14).

26. 26. A hand saw according to claim 24 or 25, characterized in that in the guide device (17), the sawing depth adjustment bearing (16) is arranged behind the sawing tool receptacle (14) in the working direction (AR) and / or the creasing device depth adjustment bearing (36) is arranged behind the creasing device tool receptacle (34) in the working direction (AR) and / or the creasing device depth adjustment bearing (36) is arranged in the guide device (17) between the creasing device tool receptacle (34) and the sawing tool receptacle (14) in the working direction (AR).

27. 27. The hand saw according to claim 1, characterized in that the sawing tool receptacle (14) and / or the creasing device tool receptacle (34) are pivotably supported in the guide device (17) by means of a bevel-cutting bearing assembly (21A) about a bevel-cutting axis (G), the bevel-cutting axis being parallel to the working direction (AR) and / or extending parallel to a longitudinal axis (L) of the guide device (17) which extends parallel to the working direction (AR).

28. 28. A hand saw according to claim 27, characterized in that the sawing depth adjustment bearing (16) and / or the creasing device depth adjustment bearing (36) are arranged on a support (40), the support being arranged between the front bevel-cutting bearing in the working direction (AR) and the rear bevel-cutting bearing (21, 22) in the working direction (AR) of the bevel-cutting bearing assembly (21A).

29. 29. The hand saw according to claim 1, wherein the operated body (72) is supported pivotably about the depth adjustment axis (TV) of the creasing device depth adjustment bearing (36) in order to adjust the distance between the creasing device tool receptacle (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP) and / or to activate and deactivate the entrainment connection between the sawing tool receptacle (14) and the creasing device tool receptacle (34).

30. The hand saw according to any one of claims 1 to 29, characterized in that the operated body (72) is arranged on an operated body arm (90) which protrudes from the depth adjustment axis (TV) of the creasing device depth adjustment bearing (36) and can be moved to at least two different pivot positions relative to the depth adjustment axis (TV) by an adjustment body (93), and by means of the different pivot positions the distance between the creasing device tool storage section (34) and the guide device (17) or the guide surface (19) and / or the distance by which the creasing tool (35) protrudes in front of the guide surface (19) can be adjusted.

31. 31. The hand saw according to claim 30, characterized in that the controlled body arm (90) is spring-loaded by a spring assembly (94) towards or away from the control body (71) into a contact position, and / or that an operating surface (92B) is arranged on an operating arm (92) protruding at an angle from the controlled body arm (90), which cooperates with an adjustment body (93), by means of which different angular positions of the controlled body (72) relative to the depth adjustment axis (TV) can be adjusted, and / or that by means of which a tethered connection between the sawing tool receptacle (14) and the creasing device tool receptacle (34) can be created and / or eliminated.

32. 32. The hand saw according to claim 1, characterized in that the hand saw has a lateral adjustment device (87) for adjusting a lateral distance of the sawing tool receptacle (14) and / or the creasing device tool receptacle (34) transverse to a longitudinal axis (L) parallel to the working direction (AR), whereby by adjusting the lateral distance of the sawing tool receptacle (14) and / or by adjusting the lateral distance of the creasing device tool receptacle (34) relative to the longitudinal axis (L), the creasing tool (35) and the saw tool (15) can be moved into a position aligned with each other relative to the longitudinal axis (L).

33. 33. A hand saw according to claim 32, characterized in that the lateral adjustment device (87) and / or a manually operable operating element (87B) of the lateral adjustment device (87) are arranged in the creasing device depth adjustment bearing (36) and / or are passed through by the depth adjustment shaft (TV) of the creasing device depth adjustment bearing (36).

34. A hand saw as claimed in any one of claims 1 to 33, characterized in that the sawing tool receptacle (14) is loaded into the upper depth adjustment position (OT) by a saw unit spring assembly (20), whereby an operator operates the sawing tool receptacle (14) against the force of the saw unit spring assembly (20) towards the lower depth adjustment position to make a saw cut (SAE) into the workpiece (W).

35. A hand saw according to any one of claims 1 to 34, characterized in that the creasing device tool receptacle (34) is biased to the inactive position (IP) by a creasing unit spring assembly which is separate from a spring assembly which loads the saw unit (11) or the sawing tool receptacle (14) to the upper depth adjustment position (OT).

36. The hand saw according to any one of claims 1 to 35, characterized in that the hand saw has a creasing device adjustment drive for adjusting the creasing device tool receptacle (34) between the active position (AP) and the inactive position (IP).

37. 37. A hand saw according to claim 36, characterized in that the entrainment device (70) forms or is part of the creasing device adjustment drive and / or that the creasing device adjustment drive comprises an electric adjustment motor.

38. The hand saw according to any one of claims 1 to 37, characterized in that the hand saw has an operating element (26) arranged on the saw unit (11) and operable by an operator for adjusting the creasing device tool receptacle (34) between the active position (AP) and the inactive position (IP).

39. 39. The hand saw according to claim 38, characterized in that the operating element comprises an electric sensor or switch for the creasing device adjustment drive arranged on the saw unit (11) and / or an actuator movably supported on the saw unit (11) and manually operable by an operator, the actuator being movably connected to a force transmission element for transmitting a force to the creasing device tool receptacle (34) in order to adjust the creasing device tool receptacle (34) between the inactive position (IP) and the at least one active position (AP).

40. The handheld saw according to any one of claims 1 to 39, characterized in that the creasing unit (31) has a creasing device drive motor (32) separate from the sawing drive motor (12).

41. 41. The hand saw of claim 40, wherein the hand saw has at least one switch for switching the creasing device drive motor (32) on and off, the switch including a switch (60A) for switching the sawing drive motor (12) on and off, and / or a switch separate from the switch (60A) for switching the sawing drive motor (12) on and off.

42. The hand saw according to any one of claims 1 to 41, characterized in that the hand saw has a flexible electrical connection (68) between the saw unit (11) and the creasing unit (31) for supplying electrical energy to the creasing unit (31).

43. The hand saw of claim 42, characterized in that the connecting line (68) has a connecting portion (68A) connected to the saw unit (11) and a connecting portion (68B) connected to the creasing unit (31), the connecting portions (68A, 68B) being connected to each other by a connecting portion (68C) and having a greater distance to the sawing tool storage portion (14) and the creasing device tool storage portion (34) than the connecting portion (68C), whereby the connecting line (68) extends around a space of the hand saw (10) that is open on the opposite side to the tool storage portion.

44. A sawing machine according to any one of claims 1 to 43, characterized in that the ratio of the outer diameter (D73) of the sawing tool (15) formed as a saw blade (15A) to the outer diameter (D12) of the sawing drive motor (12) is greater than the ratio of the outer diameter (D13) of the scoring tool (35) formed as a saw blade to the outer diameter (D32) of the scoring device drive motor (32).

45. A portable hand-held saw (10) comprising a saw unit (11) having a sawing tool storage (14) for a saw tool (15) and a sawing drive motor (12) for driving the sawing tool storage (14), and a guide device (17), wherein the guide device comprises a guide body (18) having a guide surface (19) extending along a longitudinal axis (L) for guiding the hand-held saw (10) along a workpiece (W) or a guide rail (200) in a working direction (AR), and on an upper surface (19A) of the guide body opposite to the guide surface (19), the entire sawing tool storage (14) is aligned with the sawing tool storage (14) so ​​as to be aligned with the sawing tool storage (14). a sawing tool receptacle (14) adapted to be movable between an upper depth adjustment position (OT) and at least one lower depth adjustment position (UT) by means of a depth adjustment bearing (16), and in said at least one lower depth adjustment position, said sawing tool receptacle (14) is adjusted closer to said guide surface (19) in said at least one lower depth adjustment position than in said upper depth adjustment position (OT), so that said sawing tool (15) protrudes from said guide surface (19) more in said lower depth adjustment position than in said upper depth adjustment position (OT) for making a sawing cut (SAE) in said workpiece (W), The portable hand-held saw machine comprises a creasing unit (31) having a creasing device tool holder (34) for a creasing tool (35) and a creasing device drive (32A) for driving the creasing device tool holder (34), the creasing device tool holder (34) being arranged in front of the saw unit (11) in the guide device (17) with respect to the working direction (AR), the creasing device tool holder (34) being connected to the sawing depth adjustment bearing (32A) in the guide device (17) or relative to the guide device. a creasing tool (35) arranged in the creasing tool tool receptacle for cutting a creasing mark (RI) in the workpiece (W) in front of the saw cut (SAE) to be cut in the working direction (AR) is supported movably between at least one active position (AP) in which the creasing tool protrudes from the guide surface (19) and an inactive position (IP) in which the creasing tool (35) retracts above the guide surface (19), by means of a creasing tool depth adjustment bearing (36) separate from the creasing tool (16); the hand saw has a creasing device depth adjustment means (95, 195) for adjusting the distance between the creasing device tool storage portion (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP); 1. The portable hand-held saw (10), characterized in that the creasing device depth adjustment means (95, 195) has an adjustment body (93, 193) that is adjustable between at least two adjustment positions in order to adjust different distances between the creasing device tool receptacle (34) and the guide device (17) or the guide surface (19) and / or the penetration depth of the creasing tool (35) into the workpiece (W) in the at least one active position (AP), and the adjustment body (93, 193) is formed to adjust a deactivation device (97, 197) between an activation position (AK) and a deactivation position (DK).

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