Search

EP-4390310-B1 - LASER LEVELLING DEVICE

EP4390310B1EP 4390310 B1EP4390310 B1EP 4390310B1EP-4390310-B1

Inventors

  • Moren, Gaetan

Dates

Publication Date
20260513
Application Date
20231213

Claims (5)

  1. Laser levelling apparatus (100) comprising three line projection apparatuses (120, 122, 124, 126) which emit laser planes which are orthogonal to one another, comprising a housing (110), wherein the housing (110) has three output domes (130, 132, 134, 136) for in each case one of the line projection apparatuses (120), and comprising an operator control unit (150) for operator control of the laser levelling apparatus (100), wherein the operator control unit (150) has at least one operator control element (162, 164, 166, 172, 174) which is arranged between the output domes (130), wherein the operator control element (162, 164, 166, 172, 174) has a surface normal (163, 165, 167, 173, 175), wherein each operator control element (162, 164, 166, 172, 174) has an operator control surface, wherein the surface normal (163, 165, 167, 173, 175) of the operator control element (162, 164, 166, 172, 174) is arranged perpendicularly on the associated operator control surface, wherein the operator control unit (150, 152) is arranged between the three output domes (130, 132, 134, 136), wherein the three output domes (130, 132, 134, 136) each have a surface normal (140, 142, 144, 146) and the operator control unit (150, 152) comprises at least one operator control surface, wherein the operator control surface is arranged on a plane (158) spanned by the three surface normals (140, 142, 144, 146), wherein in each case a point on the respective surface normals (140, 142, 144, 146) of the outlet domes (130, 132, 134, 136) spans the plane (158).
  2. Laser levelling apparatus (100) according to Claim 1, characterized in that the housing (110) has at least one separation surface (190) which is at least partially arranged between the output domes (130).
  3. Laser levelling apparatus (100) according to Claim 2, characterized in that the separation surface (190) has a surface normal (193, 195, 197) which lies on the plane (156) spanned by the surface normals (142, 144, 146) of the output domes (130).
  4. Laser levelling apparatus according to Claim 2 or 3, characterized in that the operator control element (172, 174) is arranged on the separation surface (190).
  5. Laser levelling apparatus (100) according to any of the preceding claims, characterized in that the operator control unit (150, 152) has three operator control elements (162, 164, 166) which are each assigned to a line projection apparatus (120, 122, 124, 126).

Description

The present invention relates to a laser leveling device according to the preamble of claim 1. State of the art From the DE 10 2016 225 242 A1 A laser leveling device with line projection devices is known. In the EP 2411762 A1 A laser leveling device for generating an optical leveling signal is known, which has a laser module that can be arranged in a housing in a pivotable manner for generating a leveling signal. WO 2018/009193 A1 describes a device and a method for projecting visible, leveled laser lines onto a work surface and for measuring distances along the leveled laser lines. Disclosure of the invention The present invention relates to a laser leveling device with three line projection devices, a housing wherein the housing has three output domes, each for one of the line projection devices, and an operating unit for operating the laser leveling device. It is proposed that the operating unit be arranged between the output domes. The invention increases user-friendliness because the control unit is arranged on the housing of the laser leveling device in such a way that a user can operate the laser leveling device intuitively. This arrangement of the control unit allows the user to immediately recognize its function without having to repeatedly test it. Registered office: Stuttgart, Commercial Register: Stuttgart District Court, HRB 14000; Chairman of the Supervisory Board: Prof. Dr. Stefan Asenkerschbaumer; Management: Dr. Stefan Hartung, Dr. Christian Fischer, Dr. Markus Forschner, Stefan Grosch, Dr. Markus Heyn, Dr. Frank Meyer, Katja von Raven, Dr. Tanja Rückert 0108 14.02.2023 The laser leveling device can be designed, for example, as a line laser, a cross-line laser, or a self-leveling multi-line laser device. Laser leveling devices are used to generate optical markings, particularly laser markings, for leveling, alignment, surveying, and/or marking tasks, such as those encountered in the trades, for example, during interior building work, construction, or when applying markings to walls. In principle, laser leveling devices allow the generation of laser markings, especially for projecting them onto objects, that represent a reference independent of the orientation of floors, ceilings, walls, or other objects, such as the vertical wall of a cabinet, and also independent of the orientation of the laser leveling device's housing. Fundamentally, in at least one operating state, laser leveling devices allow the generation of a laser marking as a reference, aligned with the gravitational field, i.e., with the direction of gravity or with respect to the plumb line. In particular, the generated laser marking can be aligned horizontally and/or vertically and/or at another defined angle to the plumb line with respect to the laser leveling device. The line projection device comprises a reflecting cone and a laser beam that can be directed towards the apex of the reflecting cone along its axis. At least two line projection devices are provided, arranged at angles to each other within the housing. The line projection devices can, for example, be arranged perpendicular to each other. The laser leveling device can have at least one laser module for generating the laser beam. The laser module has at least one light source for generating a laser mark on an object, in particular a laser, a semiconductor laser, typically a laser diode. The laser module can have at least one beam splitter designed to generate a projectable laser line, in particular a laser line projectable over an angular range of 360°, from the laser light emitted by the laser diode. Furthermore, the laser module can have additional beam-shaping and/or beam-directing and/or optical elements that influence the properties of the laser light, for example, lenses, filters, diffractive elements, mirrors, etc. Reflectors, optically transparent discs, or the like. In particular, reflective cones can be used to easily fan out the laser light emitted by the light source into a laser plane, so that when this laser plane is projected onto an object, a line, especially a marking line, preferably a laser line projectable over an angular range of 360°, is created. The precise design, particularly the shape and color, of the laser marking produced by the laser leveling device, especially by the laser module, can vary depending on the application and task. For example, the angular range in which the laser light is emitted in the form of a laser plane ("laser fan") may deviate from 360° and cover, for instance, only an angular range of 270° or 180°. Furthermore, the laser plane may also be interrupted across this angular range, for example, due to shadowing or similar factors, particularly from parts of the laser leveling device's housing. Furthermore, the laser leveling device also comprises three laser modules, each mounted on an optical carrier, in particular a pendulum arrangement, so that when the optical carrier, in particular the pendulum arrangement, is