Laser device for a hand tool or power tool

Abstract

The invention relates to a laser device (100) for a hand tool or power tool (200) for projecting lines (X2, ¥1) on a surface of an object or structure to be machined with the hand tool or power tool, characterised in that the laser device (100) has a plurality of lasers (L1, L2), of which at least one is in the form of a line laser (L1) and can be adjusted in relation to the current orientation of the hand tool or power tool (200) with respect to at least one of the three spatial axes (x, y, z) such that the orientation of the line (Y1) projected by the adjustable line laser (L1) can be changed. The adjustability can also relate to all three spatial axes and can be realised by means of a ball head bearing. The laser device (100) is preferably in the form of an adapter which can be fastened directly to the hand tool or power tool (200).

Description

[0001] 03 / 03 / 2026 PCT / DE06^ / ^O14 01027408-0017

[0002] 0B-Ö3'-Ä©ae^01Ü2740S-0017 LSEWplusPCT -1- 03 / 01 / 2026

[0003] Laser

[0004]

[0005] -Device for a hand or power tool

[0006] The invention relates to a laser device for a hand or power tool, in particular a laser device for projecting lines (straight lines) onto

[0007] The surface area of ​​an object (e.g., workpiece) or structure (e.g., facade, cladding, etc.) being worked on. Hand tools can be any type of manually operated tool, and power tools can be any type of electrically operated tool or device that the user holds in their hand and uses for manual work (drilling, screwing, riveting, sawing, etc.), and is particularly suitable for working on larger surfaces, such as walls or roofs, cladding / paneling made of wood and / or metal, OSB boards, drywall, ceilings and walls, or even textile or paper webs of all formats. Examples of hand tools include handsaws, scissors, utility knives, tin snips, etc. Examples of power tools include cordless drills, screwdrivers, saws (circular saws, jigsaws, alligator saws, or reciprocating saws), and nibblers.

[0008] Nibblers), nailers, staplers, angle grinders or cutting machines, milling machines, multi-tools, hedge trimmers, etc.

[0009] Especially when the visual appearance of the surface to be processed should not be degraded by the processing itself (e.g. screwing, riveting, sawing, cutting...), but rather enhanced if possible, the following is important:

[0010] very careful, accurate handling of the respective hand or power tool

[0011] This problem will be illustrated here using a typical application of a cordless screwdriver as an example:

[0012] A cordless screwdriver is frequently used on facades, patios, or other surfaces to attach paneling with visible screws to a substructure. To achieve a clean, straight screw pattern,

[0013] Before the actual work (drilling, screwing), either a string (guideline) must be stretched or other mechanical aids (straightedge, straightedge, or similar) must be used. However, the string or other aids hinder the user when inserting each new board or panel into the wainscoting.

[0014] Confirmation Copy 01027408-0 03 / 03 / 2026 PCT / DE0&^ßßO14 018

[0015] LSEWplusPCT -14- 01.03.2026

[0016]

[0017] The problem described here is illustrated by Fig. 1a, which schematically shows a paneling or cladding VS, which is joined at the points

[0018] S1, S2,... Sx should be screwed together accurately, with a guideline RS stretched to ensure a straight edge.

[0019] to achieve a straight screw pattern.

[0020] Instead of mechanical aids, optical aids are increasingly being used, especially line lasers, which project a straight line onto the surface to be processed.

[0021] can be projected. This allows the user to be immersed in the experience without being hindered.

[0022] This has enabled the production of a screw connection with precise alignment of the screw pattern. However, this requires the use of these known optical aids (line lasers).

[0023] The mechanical aids (guideline) must also be aligned exactly; otherwise, accurate processing of the surface (here, screwing with a straight screw pattern) will not be possible.

[0024] Further problems with the use of mechanical as well as optical aids become particularly apparent when processing non-planar surfaces, as shown in Fig. 1b.

[0025] The demonstration shows: The screwing of a profiled sheet PB should be carried out accurately.

[0026] so that a straight screw pattern results.

[0027] However, a line drawn using a guideline RS or line laser is not helpful here.

[0028] Indeed: Because of the uneven profile, the guideline only rests on the upper areas of the profile, resulting in no exact line in the depressions of the profile.

[0029] This is because only the shadow of the guideline is visible there. Especially when

[0030] When external lighting (sunlight) shines obliquely onto the guideline, a distortion of the shadows in the depressions occurs. The same problem arises, however.

[0031] This also applies when using line lasers, unless they are aligned exactly perpendicular to the projection surface; otherwise, the line will be projected at an angle onto the surface.

[0032] projected (see projection line PL in Fig. 1b) and distortion also occurs.

[0033] With conventional lasers, the effort required for precise perpendicular alignment is greater.

[0034] complex and time-consuming, in certain applications even impossible (e.g., when working on roof surfaces, facades in upper building sections, use on a

[0035] Scaffolding, etc.). 01027408-0019 03.03.2026 PCT / DE0S£^ / |ößffiO14

[0036] LSEWplusPCT -3- 01.03.2026

[0037]

[0038] The following patent documents already disclose hand tools or power tools equipped with such lasers:

[0039] US 7,200,516 B1 discloses a drilling machine equipped with point lasers, whereby

[0040] the user can recognize whether the drill's position is optimally aligned with respect to the machining point (i.e., perpendicular alignment of the drill to the workpiece).

[0041] (borehole).

[0042] US 9,114,494 B1 discloses a power tool in which lasers are used to cut a square consisting of

[0043] four short lines around the current processing point (drill or screw hole)

[0044] is displayed around, with sensors detecting the position of the power tool.

[0045] and it shows whether it is optimal or how it can be improved. This is for that purpose.

[0046] A complex electronic circuit containing sensors and a laser display is required.

[0047] CN 103831 855 A reveals a hand scissors with an integrated laser.

[0048] Accordingly, solutions already exist using laser devices attached to hand or power tools that indicate to the user the correct position of the hand or power tool (drill, cordless screwdriver) in relation to the specific processing point or cutting line (i.e., focusing on the individual, specific point).

[0049] a hole to be drilled in a wall / surface or at the location where the screw will be inserted

[0050] screw or refer to the desired cutting or separating line) and which is on a

[0051] Indicates a less than optimal posture (tilted or angled position of the hand or power tool).

[0052] Thus, only laser devices for hand or power tools are known, which are used for...

[0053] Projection of strokes or short lines onto a surface of an object or structure to be worked on with a hand or power tool.

[0054] However, there is no known state of the art that solves the problem of accurate processing.

[0055] concerns several processing points arranged in a series or even solutions01027408-0020 03.03.2026 PCT / DEflS^ / |ößffi014

[0056] LSEWplusPCT -4- 01.03.2026

[0057] reveals methods that can achieve an appealing appearance (e.g., straight screw pattern or accurate cut edge) even when processing large areas.

[0058] Therefore, the object of the invention is to develop a laser device for hand or power tools that enables accurate processing of surfaces of structures (walls, facades...) and / or objects (workpieces) in such a way that the above-mentioned problems are advantageously overcome.

[0059] The aforementioned problems are solved by a laser device with the features of claim 1.

[0060] Accordingly, a laser device for a hand or power tool is proposed for projecting lines onto a surface of an object or structure to be processed with the hand or power tool, wherein the laser device is characterized in that it has a plurality of lasers, at least one of which is designed as a line laser and is adjustable with respect to at least one of the three spatial axes so that the orientation of the line projected by the adjustable line laser can be changed.

[0061] This device comprises at least two lasers, at least one of which is designed as an adjustable line laser, allowing its projected line to be variably aligned, and the other laser can generate a projection (e.g., dots, line, cross) as a reference, thus serving as a reference laser. This eliminates the need to align the laser device separately from the tool, particularly not perpendicular to the surface, but allows the entire laser device to be attached directly to the hand or power tool (as an adapter or integrated into the tool), while still enabling processing with the desired appearance (e.g., a straight screw pattern, maintaining a defined distance from an edge or the perimeter of the surface, etc.).

[0062] For example, a straight screw pattern can be generated at a distance from an edge by always pointing the reference laser (second laser) at the edge (point or 01027408-0021 03.03.2026 PCT / DE0S£^ / |ößffiO14

[0063] OB-03-ÄÖ2€”®l©27^08-'ÖOtl

[0064] LSEWplusPCT -5- 01.03.2026

[0065] better line / stroke) and the main laser, i.e. the actual (first) line laser, is aligned parallel to the edge at the desired distance and specifies the ideal processing line.

[0066] The laser device presented here can be attached to the hand tool or power tool as an adapter, or it can be integrated into the hand tool or power tool. The housing of the laser device or adapter can have various shapes (round, square, rounded edges, etc.), ideally adapted to the shape of the hand tool or power tool and / or optimized for the specific application. In all cases, the laser device is located directly on the hand tool or power tool itself and is carried with it. The user holds the laser device together with the tool and can directly perform the desired precise processing of the surface.

[0067] This allows for precise processing of the surface in any situation (roof, scaffolding...) with any type of mobile hand or power tool (e.g., nibblers), and even on uneven surfaces, such as profiled sheets and the like, optimal results can be achieved for an attractive appearance.

[0068] The invention is particularly advantageous when using a cordless screwdriver: After the first few screws are driven, the laser line or the projected working line of the (adjustable) main laser can be used like a straightedge. Depending on how the cordless screwdriver is held, vertical, horizontal, or any other orientation is possible.

[0069] According to claim 10, the invention also comprises a hand or power tool equipped with such a laser device, and according to claim 11, the use of such a device.

[0070] Particularly advantageous embodiments of the invention are set out in dependent claims: 01027408-0022 03.03.2026 PCT / DE0S£^ / |ÖßffiO14

[0071] LSEWplusPCT -14- 01.03.2026

[0072] Accordingly, it is advantageous if the first line laser is adjustable with respect to one spatial axis (e.g., the Y-axis) and the second line laser is adjustable with respect to another spatial axis (e.g., the X-axis) so that the two projected lines intersect. The second laser can therefore also be designed as an adjustable line laser and aligned so that the reference line and the processing line intersect at a 90° angle. The reference line generated by the second laser runs along the alignment of a facade cladding made of panels, thus allowing, for example, the ends of the panels to be cut precisely at a right angle to the processing line using a circular saw.

[0073] At least two line lasers can also be adjustable with respect to the same spatial axis (e.g., the X-axis) so that the two lines projected by these line lasers run parallel to each other. This allows the reference line to run along a formwork edge, and the processing line of the first laser can be aligned parallel to it to facilitate maintaining a precise distance from the edge.

[0074] Since at least one of the lasers is always designed as a line laser, it can be advantageous if at least one is semi- or fully gimbal-mounted, and in particular designed as an adjustable point laser, cross-line laser, or positioning / circular laser. Combinations of different laser types can also be used.

[0075] The device can also be equipped with lasers that can switch rapidly between two or more modes, allowing a single laser to project straight lines, points, or circles. For example, a single laser can alternately (at a frequency greater than 20 Hz) generate two intersecting lines. Many combinations are conceivable and significantly increase the range of applications, especially since at least one of the lasers can project a (preferably long) line whose orientation along the spatial axis is adjustable.

[0076] Preferably, the laser device is designed as an adapter that can be attached to the hand or power tool as an accessory, e.g. by means of a clamping ring. 01027408-0023 03.03.2026 PCT / DE0S£^ößffiO14

[0077] LSEWplusPCT -14- 01.03.2026

[0078] or a clamping module. However, the laser device can also be integrated directly into the housing of the hand or power tool. All types of hand or power tools are suitable, such as cordless screwdrivers, drills, jigsaws, circular saws, nibblers, etc.

[0079] When multi-purpose tools are used, such as power tools with a drive unit to which various interchangeable tool modules / heads (e.g., for angled or offset drilling / screwing) can be attached (plug & play), it is advantageous if the laser device, designed as an adapter, is also configured to serve as an intermediate adapter positioned between the drive unit of the power tool and the interchangeable tool module attached to it. The adapter is then located precisely between the drive unit and the currently used tool module / function head, saving space and ensuring ease of use. In this context, it is particularly advantageous if the adapter incorporates electronics (for controlling the laser and / or displaying information to the user) that also control the operation of the respective tool module.Function head simplifies operation by automatically aligning the lasers accordingly (e.g., to match the axis offset or angle) and / or by displaying helpful information / displays to the user on an LCD screen built into the adapter, relating to the use of the currently used tool module or function head.

[0080] The laser device, designed as an adapter, may optionally have the following features: - the housing of the adapter may be designed to serve as an additional handle for operating the power tool;

[0081] - the adapter has at least one mechanical functional element for storing tools, in particular screwdriver bits (BIT), and / or for leveling the adapter;

[0082] - The adapter has at least one electrical or electronic functional element for powering the lasers, charging batteries, providing illumination, automatic leveling, and / or displaying and / or operating; 01027408-0024 03.03.2026 PCT / DE0M^QffiO14

[0083] LSEWplusPCT -8- 01.03.2026

[0084] - the housing of the adapter has at least one fastening element, in particular a magnet for attaching the adapter to a metallic object, in particular a scaffolding part, and / or in particular a hook for hanging the adapter, in particular together with the hand or power tool, on the object or structure to be processed, in particular on an edge, strut and / or batten located there;

[0085] - the adapter housing has at least one stand, in particular a foldable stand, for placing the adapter on a surface;

[0086] - The housing of the adapter is multi-part and comprises at least two parts, in particular two ring-shaped parts or two half-shaped parts that can be joined together, wherein the joinable parts have mechanical connecting means, in particular magnets, hinges, snap locks and / or clamping rings, and / or electrical connecting means, in particular electrical contacts and / or connectors.

[0087] The invention is described in detail below with reference to exemplary embodiments and the accompanying drawings, which show the following schematic representations, with Figs. 1a / b illustrating the aforementioned prior art:

[0088] Fig. 2 shows a first embodiment of the invention, in which a cordless screwdriver is used as a power tool and the laser device is designed as an adapter for it;

[0089] Fig. 3a-c shows the laser device according to Fig. 2 in different situations where the projected lines: a) cross at an angle of 90°, b) are horizontally parallel to each other, or c) are vertically parallel to each other;

[0090] Fig. 4a / b shows the laser device in a further embodiment in which one of the lasers is designed as a point laser;

[0091] Figs. 5a / b illustrate the use of the laser device for the precise screwing and / or shortening (sawing) of panels on a wainscoting; Fig. 6 shows a further embodiment of the invention in which a hand-held circular saw is used as a power tool, to whose housing the laser device is (integrally) attached; 01027408-0025 03.03.2026 PCT / DE0S^|ÖQfiO14

[0092] O3~O3'-Ä02€^O 102740S-0025 LSEWplusPCT -14- 03 / 01 / 2026

[0093]

[0094] Fig. 7a / b shows, as a further embodiment, the laser device as an adapter, which

[0095] however, it has three adjustable lasers;

[0096] Fig. 8a / b shows, as a further embodiment, the laser device, which serves as an adapter.

[0097] or can be used as a standalone device for this purpose.

[0098] Housing: a) has a magnet and / or b) has fold-out feet;

[0099] Fig. 9a / b shows, as a further embodiment, the laser device in a 3D view,

[0100] which is designed as an adapter in a multi-part and ring-shaped structure;

[0101] Fig. 10 shows the laser device according to Fig. 9a / b in a top view;

[0102] Fig. 11 shows the laser device designed as an adapter in a further variant;

[0103] Fig. 12a / b illustrates the versatile, functional features of the adapter in relation to Fig. 11;

[0104] Fig. 13 shows the adapter in an embodiment as it is used as an intermediate adapter in the

[0105] Configuration of an electric multi-function tool

[0106] can;

[0107] Fig. 14 shows the adapter in a further embodiment, also known as

[0108] can serve as an additional handle for the currently used tool; and

[0109] Figures 15a / b illustrate the great flexibility in adjustability of at least one of the

[0110] Lasers in relation to two or even all three spatial axes.

[0111] The following detailed descriptions refer to the use of the invention on various power tools, as examples of the possible applications on any type of hand or power tool.

[0112] First, reference is made to Fig. 2, which relates to a first embodiment.

[0113] the invention relates to a laser device 100 designed as an adapter, which is attached to a power tool, here a cordless screwdriver 200,

[0114] It can be attached by having a ring-shaped opening in the housing 110 of the adapter 100.

[0115] 115 fits a round housing section 215 of the cordless screwdriver, and

[0116] although fitting the round section 215 behind the actual drilling or...

[0117] Chuck that holds the tool, e.g., a 220 mm screwdriver bit. In use

[0118] The adapter 100 is then attached directly to the battery screwdriver housing 210, with the longitudinal axis

[0119] the opening 115 coincides with the longitudinal axis of the chuck 215 and tool 220.

[0120] This longitudinal axis is also referred to here as the Z-axis (see Figs. 3a and 4a). 01027408-0026 03.03.2026 PCT / DE0S£^ößffiO14

[0121] ÖS--O3“äO£€-'Ol©Ä'74Ö®- / 0©ÄS

[0122] LSEWplusPCT -10- 01.03.2026

[0123] Adapter 100 incorporates two line lasers, L1 and L2. The first is located on one side of the opening 115, and the second on the other. Both lasers are adjustable in their orientation relative to the X and Y axes (horizontal and vertical axes), allowing, for example, the first laser, L1, to project a vertical line, Y1, and the second laser to project a horizontal line, X2, onto the surface to be processed. This creates two intersecting lines, specifically at an angle of 90°. One line, such as X2, is aligned with the longitudinal edge (not the transverse edge) of one of the panels (see Fig. 1a), while the other line, Y1, precisely indicates the direction for screwing. The resulting screw pattern is perfectly straight and parallel to the edge of the panels at the desired distance.For this, the line Y1 only needs to be attached to the first screw point S1 and care must be taken to ensure that the line X1 coincides with the longitudinal direction of the panels / cladding (see also Fig. 1a).

[0124] Should a screw line be desired that runs slightly diagonally to the edge of the formwork, this can also be easily achieved by adjusting the intersection angle between the two lines Y1 and X1, i.e., setting it greater or less than 90° (e.g., 120° or 45°). If the screwdriver 200 needs to be held at a slight angle during processing, the alignments of lasers L1 and L2 can be adjusted so that two intersecting lines are always projected in the desired orientation towards the workpiece / surface.

[0125] Since both lasers L1 and L2 are located directly on the power tool 200, each laser projects a straight line from the tool (!), thus ensuring a perpendicular laser projection without distortion even on uneven surfaces (see profiled sheet metal in Fig. 1b); this also applies to tools that follow the profile, such as nibblers.

[0126] Figures 3a-c illustrate the many projection possibilities resulting from the adjustability of the lasers. In Figure 3a, lasers L1 and L2 are set as in Figure 2, resulting in two intersecting lines Y1 and X1. In Figure 3b, two parallel lines X1 and X2 are generated, this time in a horizontal orientation. Figure 3c also generates two parallel lines Y1 and Y2, but these are in a vertical orientation. PCT / DE0S£^ / |ößffiO14 01027408-0027 03.03.2026

[0127] 03-O3-Ä026-O 1^27408-0027 LSEWplusPCT -11- 03 / 01 / 2026

[0128]

[0129] The settings or alignments of lasers L1 and L2 shown in Fig. 3b / c are

[0130] especially suitable for maintaining a very precise distance between the processing line

[0131] to the edge of the surface to be processed. The adjustability of lasers L1 and L2 can be adjusted.

[0132] This can affect all spatial axes (X, Y, and Z). For this purpose, the respective laser is mounted, for example, in a spherical holder (ball joint mount) or similar and can be adjusted around any spatial axis. This allows maximum flexibility with regard to the relative alignment of lasers L1 and L2 to each other, as well as to the workpiece. The in

[0133] The constellations shown in Figs. 3a / b are only examples of parallel or perpendicular alignments. Due to the completely flexible adjustability, the intersection point (Fig. 3a) or the distance (Fig. 3b) can be set and easily adjusted.

[0134] The lines can be modified; likewise, non-parallel or perpendicular line assignments can also be realized. This significantly increases the application possibilities of the laser device disclosed here.

[0135] Figures 4a and 4b show another embodiment in which one laser L2

[0136] one laser is designed as a line laser, but the other laser L1* is designed as a point laser.

[0137] In this configuration, the point laser L1* should preferably be used as the reference laser.

[0138] can be used, for example, to target a point on the surface or at the edge of the surface,

[0139] while the other laser L2 is used as a processing laser, which is positioned at a distance from

[0140] The point displays a machining line. This can, of course, also be used to create a straight screw pattern at a defined distance from the edge of the surface. Interesting.

[0141] However, it is also possible to create circular machining lines (e.g., with a screwdriver, riveting tool, nibbler, or jigsaw) that run concentrically to the projected point at a defined distance (radius). Advantageously, the laser L1* generates

[0142] also a circle concentric around the reference point, i.e. that the

[0143] The L1* laser can also be used as a circular laser or position reader.

[0144] As shown in Fig. 4a / b, any laser can be adjusted, at least semi-gimbal-mounted (i.e., by a certain angle).

[0145] axis rotatable) or even fully gimbal adjustable (i.e. rotatable around two axes) or

[0146] It may even be adjustable around all three axes (e.g. by means of ball head bearings).

[0147] Illustrated using the example of the line laser L2, this means that the laser L2

[0148] It is rotatable both around the longitudinal axis z and around the vertical axis y and possibly

[0149] Transverse axis x. This allows, firstly, the laser L2 to be rotated around the z-axis, the

[0150] The generated line can be rotated arbitrarily in the xy-plane, i.e., arbitrarily between a horizontal orientation X2 (Fig. 4a) and a vertical orientation Y2 (Fig. 4b). Zum01027408-0028 03.03.2026 PCT / DE092^|öflfiO14

[0151] LSEWplusPCT -12- 01.03.2026

[0152]

[0153] Others can arbitrarily adjust the generated line by rotating the laser L2 around the y-axis.

[0154] The xy-plane is adjusted so that the horizontal orientation of the line is changed.

[0155] (from e.g., Y2 to Y2* in Fig. 4b). Finally, by rotating the laser L2 around the x-axis, the generated line can be adjusted arbitrarily in the xy-plane so that the vertical orientation of the line is changed (from e.g., X2 to X2* in Fig. 4a). This allows the orientation of the respective laser to assume any spatial orientation, thereby

[0156] When using two or even more lasers (see Fig. 7a(b)) and also by using different laser types, virtually countless variations are possible.

[0157] Figures 5a / b illustrate the linear creation of a screw pattern (e.g., with

[0158] (the cordless screwdriver according to Fig. 2) parallel to the edge of the surface. With the laser device according to the invention, a straight screw pattern can first be created along the

[0159] Line Y2 is created and then (insofar as the panels are still being shortened)

[0160] (must) can also be carried out by shortening / sawing at the defined distance (transverse distance) DQ. If the edge is already ideal, then the line Y2 can be used to...

[0161] to maintain a distance. The laser can also be used to determine the distance A to the longitudinal edge of the

[0162] The boards and / or the distance (longitudinal distance) DL to the adjacent screw position must be precisely maintained. At least one of the lasers (here L1) is designed in this way.

[0163] that it alternates and in very rapid succession (min. 20 Hertz) the lines Y1 and X1

[0164] This creates the possibility of aligning oneself with the longitudinal line (X-direction) of the panels.

[0165] to orient oneself.

[0166] Fig. 6 shows, as a further embodiment, a hand-held circular saw 200# as a power tool, on which a device 100# with two lasers L1 and L2 is integrally mounted.

[0167] The housing is built to project two parallel lines Z1 and Z2 in the Z direction.

[0168] to project the workpiece, here onto a wooden plank B. Line Z1 represents the machining line (here saw line), which runs at the desired transverse distance DQ to the screw line Z2 (previous machining line of the screwdriver). This allows the

[0169] Precise cutting of a plank or panel can be achieved.

[0170] Figures 7a and 7b refer to an embodiment with three lasers L1, L2, and L3, which

[0171] Each can be adjusted at least with respect to one spatial axis. This gives

[0172] even more diverse application possibilities. The 100' laser device is also available as

[0173] The adapter is designed and features a battery compartment with a battery (BAT) or rechargeable battery, and also

[0174] A charging option, e.g., via Micro-USB, may be provided. Furthermore, a 01027408-0029 03.03.2026 PCT / DE0M^QfflO14

[0175] LSEWplusPCT -13- 01.03.2026

[0176]

[0177] Activation means, here button T, are provided, which is used when operating the power tool.

[0178] The laser device can be activated 100*. The button T is located in close proximity to the controls on the handle of the power tool, so that the

[0179] Button T can also be reached with the finger which the user uses to operate it.

[0180] used the power tool.

[0181] One of the three lasers, preferably L3, can be used, for example, as a positioning or circular line laser or

[0182] also function as lighting devices or be equipped with a lighting LED in order to

[0183] to better illuminate the current processing area. The lasers L1 and L2 are preferably positioned symmetrically to the Z-axis (see Fig. 2), which allows for

[0184] on both sides of the drill bit or screwdriver bit 220, one of the two lasers L1 or L2.

[0185] its line is projected onto the surface. When the laser device is 100 degrees horizontally on the

[0186] If the Schrauber 200 is mounted, then this does not, or only minimally, obstruct the view.

[0187] Users onto the work surface. The more lasers the device has, the larger they are.

[0188] the combination possibilities to also create other projection patterns (lines, points,

[0189] to create circles, crosses).

[0190] Figures 8a and 8b illustrate further embodiments of the laser device. These are adapters 100" and 100', respectively, which can also be used as standalone laser devices by attaching them to the power tool.

[0191] separates and attaches, for example, by means of: a) built-in magnets M to metallic surfaces or objects (e.g. scaffolding) and / or b) by means of fold-out feet ST

[0192] It is placed on a surface to project the lines onto the work area. This allows the laser device to be used independently of the power tool.

[0193] They are used, quickly disconnecting from the power tool and later reconnecting.

[0194] it can be attached to it.

[0195] Figures 9a / b and 10 refer to a further embodiment in which the

[0196] The laser device is designed as an adapter 100* in a multi-part, ring-shaped structure:

[0197] The adapter housing is multi-part and consists of the following ring-shaped elements: an inner ring 110*, which in turn is made up of two joined

[0198] consisting of halves 110*a and 110*b, and an outer ring 120*, which in turn consists of

[0199] consists of two compound halves 120*a and 120*b. The inner ring 110* encloses

[0200] directly a housing section of the power tool, here e.g. area 215 behind the

[0201] Chuck of the screwdriver 200 (see Fig. 2). The inner ring may contain recesses / openings. 01027408-0030 03.03.2026 PCT / DE0S£ / |ößffiO14

[0202] LSEWplusPCT -14- 01.03.2026

[0203] with accessories contained within, such as a supply of screwdriver bits, screws, or the like, which are readily available to the user at all times. Thus, the inner ring 110* also functions as a bit or screw holder.

[0204] The outer ring 120* encloses the inner ring 110* and contains, in one half 120*a, the lasers L1 and L2, and in the other half 120*b, the battery or rechargeable battery for powering the lasers (not shown here; see Fig. 7a). Suitable contacts K (power supply contacts) for electrical connection of the lasers L1 and L2 are located on opposite end faces of the outer ring halves. The halves of the rings, at least those of the outer ring 120*, can be held together by any type of connection, such as magnets, snap fasteners, or toggle latches, and the like.The two halves of the outer ring 120* can also be provided with a hinge SN, so that the two halves 120*a and 120*b can be easily joined together by a folding motion and securely and firmly connected by means of a snap or clamping lock, the clamping lock also simultaneously holding the halves of the inner ring 110* together and pressing firmly against the housing section 215 of the power tool (see Fig. 9a and also Fig. 2).

[0205] The inner ring 110* can be adapted to various power tools and machines with its inner diameter; its outer diameter would always be the same, adapted to the inner diameter of the outer ring 120*.

[0206] The invention presented here significantly facilitates the precise processing of flat as well as profiled surfaces, achieving an accurate appearance in a very user-friendly, flexible and safe manner without having to accept the sometimes considerable disadvantages of using conventional aids, such as guide strings or standard laser devices.

[0207] Fig. 11 shows a schematic representation of the laser device designed as an adapter in a further variant 100", which has several functionalities and can be easily attached to the power tool 200 (here an electric screwdriver). For this purpose, the round recess 115 of the adapter on the electric screwdriver is placed over the rear curve located behind the drill or screwdriver chuck and clamped there using a clamping fastener 116. The adapter 100" should be attached to the housing of the electric screwdriver 200 as horizontally as possible. Markings (not shown here) could also be used for this purpose. 1-0031 03.03.2026 PCT / DE002j© / jößffiO14

[0208] LSEWplusPCT -15- 01.03.2026

[0209] Both housings, i.e., the housing of the electric screwdriver as well as the adapter housing 110, will be helpful.

[0210] The housing 110 of the adapter contains three lasers. The first laser, L1, is positioned above the recess 115, aligned with the vertical center axis of the tool (receptacle for the respective screwdriver bit). The second laser, L2, and the third laser, L3, are each located on one side of the recess 115 at the height of the horizontal center axis of the tool. A further laser, L1', is mounted on the electric screwdriver 200 itself, preferably near the battery. Lasers L1 and L1' are, for example, line lasers configured to project vertical lines onto the surface to be machined, which together form a very long vertical reference line (in particular, a plumb line). Lasers L2 and L3 generate at least two horizontal lines that intersect the vertical reference line (preferably at an angle of 90 degrees), for example, to...at spaced-apart points, so that two parallel lines (comparable to lines Z1 and Z2' in Fig. 6) are generated. Or, with appropriate alignment of lasers L2 and L3, a single, long horizontal line is generated that intersects the vertical line at the center of the tool's axis. By adjusting the lasers, many line patterns suitable for the respective situation can be generated and projected onto the surface to be processed. At least one of the lasers, e.g., L2, can also be a cross-line laser whose intersection point preferably coincides with the center of the tool's axis (see also Fig. 12a). Laser 3 could then generate a vertical line that runs parallel to the line of lasers L3, L1, and L1' at a desired distance. Laser L2 can, for example,It can also be controlled by self-leveling electronics, which ensure that the L2 laser always produces a perfectly horizontal line (as a "spirit level line"). Many variations are possible. In a simpler version, a spirit level can be installed in housing 110 instead of the L2 laser.

[0211] The housing 110 of the 100" adapter also includes storage for screwdriver bits (BIT) or other tool inserts, such as drill bits, so that the user has all tools (screwdriver bits, drill bits, etc.) immediately at hand. Furthermore, the 100" adapter has a fastening device in the form of a hook (H) or similar. This allows the user to hang the 100" adapter on an edge, strut, or the like (e.g., battens in roof construction); the same applies to the entire 200" power tool, provided the 100" adapter with the retaining hook (H) is mounted to it. 01027408-0032 03.03.2026 PCT / DE0e^|ÖQfiO14

[0212] LSEWplusPCT -16- 01.03.2026

[0213] Figures 12a and 12b show the adapter from the front (view of the lasers) and from the back, respectively, and illustrate further expansion options and functions of the adapter. The adapter contains internal electronics (processor, memory) that control the lasers (e.g., switching them on and off; activating individual lasers; switching modes). This means that at least one laser can switch rapidly between two or more modes, allowing it to project straight lines, points, or circles. Alternatively, the laser can alternately project two intersecting lines (at a switching rate greater than 20 Hz).

[0214] Figure 12b shows that the 100" adapter can also have a battery or rechargeable battery compartment (on the back), as well as suitable charging ports (e.g., USB). Furthermore, an LCD display, preferably a touchpad, can be provided on the top of the adapter. Additional operating and display elements, as well as fastening elements (such as magnets), may also be present.

[0215] Figure 13 shows a further, particularly advantageous embodiment of the adapter 100**, which is designed to serve as an intermediate adapter 111 in conjunction with a multi-function power tool 200*. The multi-function power tool / electrical tool 200* has a base housing 210 (also called drive module / part) and a connection part 111 to which various tool modules, i.e., tool adapters, can be interchangeably connected, such as a drill / screw module 215, an angle module 216 for drilling / screwing at an angle of, for example, 90 degrees, and an offset module for drilling / screwing off-axis. Such multi-function power tools, like the device 200* shown schematically in Figure 13, offer the advantage that numerous tasks can be performed with a single base unit (drive module 210) by means of many modules (such as the plug-in adapters 215-216 shown here). This allows for very quick and cost-effective implementation of functions such as...a drill driver, impact driver, angle grinder, renovator, compressor or a pendulum or oscillating saw and much more can be realized.

[0216] According to the invention, the laser device 100** is now designed as an intermediate adapter, the housing 111 of which fits precisely between the drive module 210 or connection part 211 and the respective tool module 215...217 and can thus be integrated integrally into the overall structure. For this purpose, the housing 111 is also equipped with a coupling shaft, which is connected on one side to the shaft of the drive module 210.

[0217] will be and on the other side to the shaft of the currently used tool module / -

[0218]

[0219] adapters, e.g. 215, are connected. Fig. 14 shows another embodiment of adapter 100+, in which this

[0220] It also features a housing section 112, which serves as an additional handle for the currently used power tool 200. This variant is particularly advantageous for power tools used for heavier tasks, such as impact drilling.

[0221] are to be.

[0222] Figures 15a and b illustrate the great flexibility in the adjustability of a laser L* according to the invention when it is mounted in a spherical bearing.

[0223] is.

[0224] In Fig. 15a, the laser L* is mounted in a ball-joint bearing, allowing its orientation to be adjusted around each of the three spatial axes X, Y, and Z. With the arrow

[0225] “I” illustrates the adjustability around the X-axis, arrow “II” illustrates the adjustability

[0226] around the Y-axis and with arrow "III" the adjustability around the Z-axis. This covers all possibilities for adjusting a laser. This results in very flexible combination possibilities for projecting the laser L*, even when used in conjunction with a fixed laser (e.g., a rigidly aligned line laser).

[0227] lines and / or points sent by the lasers. If even more than one of the lasers

[0228] Having these capabilities results in almost infinitely versatile adjustment and usage options regarding the interaction of the projections of the lasers used.

[0229] Fig. 15b shows an example of the situation in which the first laser L1 points in the target direction Z1 (processing line, cf. e.g. saw line in Fig. 6) and the second laser

[0230] L2 initially points parallel in the same direction Z2 = Z1, resulting in a transverse distance DQ

[0231] can be precisely maintained. By adjusting the laser L2, it can be positioned in

[0232] Align towards Z2* and then find an intersection point SP with the line of the first laser.

[0233] Create L1; this then creates a distance DL in the longitudinal direction = machining direction.

[0234] (Z-direction) displayed, e.g. 20 cm, which is very helpful to the user when they need to work at regular intervals to achieve an exact longitudinal distance DL (e.g.

[0235] Distance from one screw connection to the next; compare longitudinal distance DL between the

[0236] Points P in Fig. 5a) can be complied with. 01027408-0034 03.03.2026 PCT / DE092^|ÖfiSO14 LSEWplusPCT -18-

[0237]

[0238] March 1, 2026

[0239] As previously described using the many examples, the laser device presented here can be implemented in a very compact form and can be attached directly to the power tool or even integrated into it, making it particularly suitable for use

[0240] of the respective power tool in higher and / or rather narrow and difficult-to-access locations

[0241] Suitable for various areas (construction site scaffolding, roofs, etc.). Due to its adjustability, at least...

[0242] At least one of the lasers can project a straight line as a processing line onto the surface to be processed and aligned to the desired direction and / or distance directly by the user.

[0243] during the operation of the electrical appliance. The examples described above illustrate the structure and function as well as the extensive application possibilities of the invention.

[0244] Reference symbol list

[0245] VS; PB; BL cladding; profiled sheet metal; plank / board

[0246] RS guideline

[0247] S1. S2,... Sx screws (screw connection)

[0248] A, A'; B distance to be maintained (e.g. to the edge or to the next

[0249] Screw connection)

[0250] 100, 100', 100”, 100+ Laser device for power tools designed as an adapter

[0251] 100* Laser device (with multi-part housing)

[0252] 100# Laser device integrated into power tool

[0253] 110 Housing of the adapter (possibly with holder H and / or additional handle area)

[0254] 112)

[0255] 115 Recess (possibly with clamping ring 116)

[0256] 110*, 120* Inner or outer ring (possibly two halves each) of a multi-part

[0257] Adapter housing

[0258] 100** Laser device designed as an intermediate adapter

[0259] with corresponding housing 111

[0260] L1, L2, L3; LT, L1* Laser (line laser, if necessary point laser)

[0261] Projected line 01027408-0035 03.03.2026 PCT / DE092j0 / |ößffiO14

[0262] 03-03-2026-01 027'403-0035 LSEWplusPCT -19- 03 / 01 / 2026

[0263] 200, 200# Power tool (e.g. electric screwdriver or circular saw)

[0264]

[0265] 200* Electric multi-tool with drive unit

[0266] 210, 215, 220 Housing of the power tool or drill chuck or clamped

[0267] Tool (e.g. screwdriver bit)

[0268] 200* Power tool in the form of an electric multi-tool with

[0269] Base housing 210 and drive unit 211 for connecting various

[0270] interchangeable functional or tool modules 214-216

[0271] x, y, z spatial axes

[0272] X...; Y...; Z... Projection lines (each aligned with a spatial axis)

[0273] P, P' positions (for screw connections)

[0274] Bit holder for or storage of bits or similar tool inserts / parts

[0275] BAT battery / accumulator

[0276] K Contact(s) for powering the laser

[0277] EL Electronics (control unit, possibly program and / or data storage)

[0278] LED Electronic component for lighting

[0279] LCD Electronic component for display and / or operation (touchpad)

[0280] T Pushbutton / Switch

[0281] NV spirit level or electronic leveling component

[0282] M Magnet

[0283] ST stand (foldable)

[0284] SN hinge (optional on both outer ring halves 120*a / b)

[0285] KL ball head bearing for spherical mounting of the laser L

[0286] I, II, III Adjustability of the laser alignment around the X, Y or Z axis

[0287] SPT Intersection point between lines Z1 and Z2*

[0288] DQ Cross distance (between parallel laser lines)

[0289] DL Longitudinal distance (between current and next processing point)

Claims

01027408-0037 03 / 03 / 2026 PCT / DE0S£^ößffiO14 LSEWplusPCT -20- 01.03.2026 PATENT CLAIMS 1. Laser device (100, 100#; 100*; 100**) for a hand or power tool (200, 200#) for projecting lines (X, Y, Z) onto a surface of a device with the Hand or power tool to be used on the object being worked on (BL) or Structure (VS, PB), characterized by the fact that the laser device (100, 100#; 100*; 100**) a variety of lasers (L1, L2; L3), at least one of which is designed as a line laser (L1) and with regard to the current orientation of the hand or power tool (200, 200#) is adjustable on at least one of the three spatial axes (x, y, z), that the alignment of the line projected by the adjustable line laser (L1) (Y1) is changeable.

2. Laser device (100, 100') according to claim 1, characterized in that a first (L1) of the line lasers with respect to one (y) of the three spatial axes is adjustable and a second (L2) line laser is in relation to another (x) the three spatial axes are adjustable so that the two lines (Y1; X2) projected by these line lasers (L1, L2) intersect.

3. Laser device (100, 100', 100#) according to claim 1, wherein characterized that two (L1; L2) of the line lasers are both aligned with respect to a certain (x) of the three spatial axes are adjustable, so that the two lines (X1; X2) projected by these line lasers (L1, L2) parallel run towards each other.

4. Laser device (100, 100') according to claim 1, characterized in that, that of the multitude of lasers (L1, L2, L3; L1*) at least one semi- or is designed to be fully gimbal adjustable, and in particular as an adjustable Point laser (L1*), cross line laser (L2) or position laser or circular laser is trained.

5. Laser device (100, 100') according to claim 1, characterized in that PCT / DE0S£^ / |ÖÖffiO14 01027408-0038 03.03.2026 LSEWplusPCT -21- March 1, 2026 of the multitude of lasers (L1, L2, L3; L1*) at least one around all three The spatial axes (x, y, z) are adjustable and are spherical. Bearing, in particular a ball head bearing (KL), is included.

6. Laser device (100', 100*, 100**) according to one of the preceding claims, characterized in that the laser device serves as an adapter (100, 100*, 100**) is trained, which is designed as an additional device on the to be attached to hand or power tools (200), and the fastening means for this purpose, in particular a recess (115), a clamping ring (116), a clamping module and / or a snap or clamping lock, exhibits.

7. Laser device (100**) according to claim 6, characterized in that the Housing of the laser device designed as an adapter (10**) also be procured is to serve as an intermediate adapter (111) that connects a drive part (210, 211) of the hand or power tool (200*) and a tool module (214, 215, 216) that can be interchangeably attached to it.

8. Laser device (100+) according to claim 6 or 7, characterized in that procure the housing of the laser device designed as an adapter (100+). is, as an additional handle (112) for operating the hand or power tool (200) to serve.

9. Laser device (100, 100*, 100**) according to one of claims 6-8, characterized in that the laser device designed as an adapter (100, 100*, 100**) has at least one of the following features: - the adapter (100*, 100**) has at least one mechanical functional element for storing tools, in particular screwdriver bits (BIT), and / or for leveling (NV) the adapter (100**); - the adapter (100', 100*, 100**) has at least one electrical or electronic functional element for powering the laser (BAT), For charging batteries, for lighting (LED), for automatic leveling (NV), and / or for display and / or operation (LCD); 01027408-0039 03.03.2026 PCT / DE0M^öfflO14 3-03-20Ä6- 010274: QS~0039 LSEWplusPCT -22- 01.03.2026 - the housing (110) of the adapter (100', 100*, 100**) has at least one fastening element, in particular a magnet (M) for fastening of the adapter (100', 100**) on a metallic object, in particular scaffolding part, and / or in particular a hook (H) for Attaching the adapter (100**), especially together with the hand or power tool (200), to the object to be processed (BL) or structures (VS, PB), especially at an edge located there, Strut and / or batten; - the housing (110) of the adapter (100") has at least one Stand (ST), in particular foldable stand (ST), for setting up of the adapter onto a surface, on; - the housing of the adapter (100*) is made up of several parts and comprises at least two parts, in particular two ring-shaped parts (110*, 120*) or two half-shaped parts (110*a / b, 120*a / b), which are joinable, wherein the joinable parts mechanical fasteners, in particular Magnets, hinges (SN), snap fasteners and / or have clamping rings and / or electrical connectors in particular electrical contacts (K) and / or connectors.

10. Laser device (100#) according to one of the preceding claims, characterized in that the laser device (100#) itself or its housing in is integrated into the hand or power tool (200#).

11. Hand or power tool (200, 200'; 200#) equipped with a laser device (100, 100'; 100*) for projecting lines (X, Y, Z) onto a surface of a the object to be worked on with hand or power tool (B) or is equipped with a structure (VS, PB) according to one of claims 1-10.

12. Use of a laser device (100, 100'; 100*) according to a of claims 1-10 for a hand or power tool (200, 200'; 200#) according to claim 11.

Images