WO2009024383A1

WO2009024383A1 - Pendulum laser device

Info

Publication number: WO2009024383A1
Application number: PCT/EP2008/058347
Authority: WO
Inventors: Rudolf Fuchs
Original assignee: Robert Bosch Gmbh
Priority date: 2007-08-21
Filing date: 2008-06-30
Publication date: 2009-02-26
Also published as: DE102007039339A1; EP2181302A1; CN101784866A

Abstract

The invention relates to a pendulum laser device (10) comprising a housing (5), a pendulum arrangement (7) arranged in the housing (5), and a laser unit (1) applied to the pendulum arrangement (7). The laser unit (1) is freely self-orienting on the vertical (9), independently of the orientation of the housing, by means of the pendulum arrangement (7), and is designed to produce a laser beam perpendicularly oriented to the vertical (9). According to the invention, the pendulum arrangement (7) is in the form of a pendulum suspension that can oscillate in all directions and comprises a transversal cord (11) extending transversally to the vertical (9), at least one roll (15) running freely on the transversal cord (11) and rotatable around same (11), and a suspension applied to the roll axle with one end and supporting the laser unit (1) on the other end.

Description

description

title

Pendulum laser device

State of the art

The invention relates to a pendulum laser device comprising: a housing; a pendulum arrangement arranged in the housing and a laser unit attached to the pendulum arrangement, wherein the laser unit is free and self-alignable by means of the pendulum arrangement independently of a housing orientation on the solder and is designed to generate a laser beam oriented perpendicular to the solder.

For leveling and / or marking tasks in the field of crafting, e.g. For some time now, laser products have been used which, depending on the application, produce laser markings in order to realize a reference independent of the orientation of floors, ceilings or walls. A distinction is made between so-called rotary lasers, in which a laser signal is fanned by rotation of the light source or a beam deflecting device in a plane to be adjusted and thus defines a reference surface, and so-called line lasers, which allow projection of the laser signal on a reference surface that a predetermined direction becomes visible and can be kept.

For example, EP 0 785 412 A2 discloses a laser leveling device with an elongate housing and dragonflies which, as a laser spirit level, are connected to the level the housing in a desired plane and emit a laser beam for marking purposes.

From DE 295 11 266 a marking laser is known in which a laser unit is not movable, that is fixedly mounted in a housing, and wherein the housing forms an automatically perpendicular aligning pendulum.

From DE 297 16 316 Ul a pendulum laser for leveling and / or attaching markings on walls is known which has a housing with a suspension device, wherein the housing has an opening for a laser beam of a freely suspended from a pendulum axis laser beam generator.

An abovementioned, per se known pendulum laser device is used for leveling and / or marking using the laser beam generated by the laser unit on objects, for example, to display horizontal lines on surfaces, such a line is independent of a housing orientation of Pendellaservorrichtung perpendicular to the Lot. Such a line is independent of the orientation of the outer contact surface of the pendulum laser device, and the usable for leveling and / or marking line is generated by the laser unit, which is freely self-alignable as such independently of a housing orientation on the solder. The pendulum mode described forms the basic function of a self-leveling or marking Pendellaservorrichtung mentioned above.

The pendulum assembly of a pendulum laser device mentioned above can be realized by a suitable suspension or a suitable storage. The easiest way is to realize a pendulum arrangement in the form of a thread suspension, but which has the disadvantage that they rotate transversely to the pendulum axis, for example by a twist of the thread. If necessary, a simple thread suspension of the type described above also has the disadvantage that it is pivotable forwards and backwards, is comparatively too easily deflectable and therefore takes a comparatively long time to settle. This vertical laser lines are relatively expensive to stabilize. It is known to provide a suspension mechanism for suspension, as described for example in G9012737.4 U1 or G9418591.3 U1, but which does not act on twisting.

It is also known to provide a knife edge bearing for mounting the laser unit, wherein a knife edge bearing, however, can only oscillate in one direction. Although a cross-bearing storage meets the requirements of an all-round oscillation and avoids pivoting movements perpendicular to the pendulum axis, but is complex, and the usually multiple bearings must be relatively accurate and constructed with relatively little friction.

It would be desirable to have a pendulum arrangement which is relatively simple in construction and designed, on the one hand, to deflect in all directions and, on the other hand, less desirable pivoting movements to a large extent perpendicular to the pendulum axis are largely avoided. DISCLOSURE OF THE INVENTION Technical Problem

The object of the invention is to provide a pendulum laser device in which a pendulum assembly is designed comparatively simple and on the one hand is able to deflect in all directions and on the other hand pivotal movements of the pendulum assembly are largely avoided perpendicular to the pendulum axis to an undesirably high degree.

Technical solution

This object is achieved by a pendulum laser device of the type mentioned, in the present invention, the pendulum assembly is formed in the form of a universally pendulum pendulum suspension, which has: a transverse to the perpendicular transverse strand; at least one roller freewheeling along the transverse strand and movable about the transverse strand, and a suspension which is attached at one end to a roller axle and at the other end to the laser unit.

The invention is based on the consideration that it is possible, within the framework of a suspension, to realize a comparatively simple pendulum arrangement, because this largely avoids the disadvantages associated with a bearing. The invention has recognized that a suspension with a freewheeling on a transverse strand and around the transverse strand around movable roller not only allows an oscillating in all directions, but also pivotal movements perpendicular to the pendulum axis only conditionally, ie in an appropriate frame allowed , This advantage is ensured by having one along the Transverse pulley freewheeling role in a "torsional motion" around a Lotachse around due to the predetermined by the transverse strand preferred direction under the leadership of the role is only allowed to a very limited extent or is suitably prevented.

Advantageous developments of the invention can be found in the dependent claims and specify in detail advantageous ways to realize the above-described concept within the scope of the task, as well as with regard to further advantages.

The at least one roller is preferably realized in the form of a single roller. It can also be provided a number of, preferably two, along the transverse strand successively arranged rollers.

Preferably, or the number of roller axis (s) are rotatable about an axis perpendicular to the transverse strand only in a limited angular range. This is achieved on the one hand by the specification of a preferred direction by the transverse strand for the role. In particular, a roller and / or a transverse strand may comprise means which restrict a rotation of the roller axis about an axis perpendicular to the transverse strand. Among other things, it has proven to be particularly advantageous that the roller has a tread with a waisted cross-section. It has also proved to be preferred that a limiting element secures the role against jumping off the transverse strand. Preferably, an over the role and / or attached to the role limiting element is provided. In order to align the pendulum assembly particularly advantageous relative to the solder, it has proven to be expedient that the transverse strand is oriented substantially oriented in the laser beam direction. Preferably, ends of the transverse strand on two opposite surfaces, in particular a front and a rear surface, are fixed in the interior of the housing. A pendulum arrangement formed with such a transverse strand is preferably suitable for mounting a laser unit which is capable of delivering a line for leveling and / or marking through a side wall of the housing.

Preferably, the transverse strand is mounted unstressed. In a particularly preferred development of the transverse strands depends on an appropriate scope. This has the advantage that a role due to gravity comes in the idle state practically centered to the housing, ie at the lowest point of the slightly sagged transverse strand comes to rest. This is especially the case when the housing is horizontal.

The further suspension of the roller preferably has two strands attached to the roller axis on both sides of the roller, to which the laser unit is attached. In a particularly preferred manner, the suspension similar to a swing with two strands can lead to a relatively safe, yet flexible suspension of the laser unit. Most preferably, the suspension, about the roller axis and / or with the roller axis pivotally mounted on the roller axle. This facilitates a pendulum movement of the laser unit in the direction of the transverse strand, which can be permitted to a certain extent as required. In another development, the suspension may have a single on the one hand of the roller pressed on the roller axis, rigid suspension bracket for the laser unit. The hanger is preferably arcuate, so that - similar to a gondola suspension - the center of gravity of the overall system of laser unit and hanging support is below the roller.

It has also been found that within the scope of the concept of the invention or its developments, a laser unit can be particularly advantageously extended to all sides, but without further disturbing pivoting movements, since they are largely prevented, inter alia, by the sagging transverse strand. Additional damping agents can be avoided.

Overall, a particularly simple construction pendulum arrangement is realized with the concept of the invention, which can still swing out in all directions and automatically, without further constructive measures, pivotal movements perpendicular to the swing axle permits only conditionally and in an appropriate frame.

Brief description of the drawings

Embodiments of the invention are described below with reference to the drawing. This is not intended to represent the embodiments significantly, but the drawing, where appropriate for explanation, executed in a schematized and / or slightly distorted form. With regard to additions to the teachings directly recognizable from the drawing reference is made to the relevant prior art. In detail, the drawing shows in: 1 is a schematic representation of a side view of a particularly preferred embodiment of a pendulum laser device according to the concept of the invention;

2 shows a schematic representation of a front view of the embodiment in FIG. 1.

Embodiments of the invention

Fig. 1 and Fig. 2 show a particularly preferred embodiment of a pendulum laser device 10 as one particularly according to the concept of the invention. The pendulum laser device 10 has for leveling and / or marking on a laser unit 1, which is presently formed in the form of a line laser with a single laser line 3. In a modification, a laser unit 1 in the form of a cross-line laser can also be formed which fans out a cross line, for example by suitable deflection of a laser line 3. In a further modification, the laser unit 1 can also be formed in the form of a rotary laser. In principle, it is possible to provide different shapes of a laser unit 1 in the pendulum laser device 10.

Furthermore, the pendulum laser device 10 has a housing 5, in which a pendulum arrangement 7 is arranged and to which in turn the laser unit 1 is attached. According to the concept of the invention, in the present case a particularly advantageous pendulum arrangement 7 is provided, which has an oscillating pendulum suspension which can be suspended on all sides and which has a transverse strand 11 extending transversely to a solder 9 and one along the transverse string 11 freewheeling and around the transverse strand 11 around in the direction of arrow 13 movable roller 15 is formed. The roller 15 is presently formed with a tapered cross section tread by having two side parts 17, between which a smaller diameter portion is located and whose surface forms the tread for the transverse strand 11. As a result, in this embodiment, the transverse strand 11 is guided between the side parts 17 of the roller 15, which prevents the roller 15 from sliding sideways from the transverse strand 11 and nevertheless allows the pivoting movement along the direction of the arrow 13. The side parts 17 exceed in their diameter the middle part 19 by a degree that largely prevents jumping off of the roller 15 from the transverse strand 11 upwards. In addition, in this embodiment of FIGS. 1 and 2, a limiting element 21 is also provided which reliably prevents any movement of the roller 15 upwards. The limiting element 21 is presently formed in the form of a curved surface, without hindering the roller 15 in its free-running activity along the transverse strand 11.

In the present case, the transverse strand 11 is formed in the form of a sagging rope, which is fastened by its ends 23 to a front surface 25 or a rear surface 27 of the housing 5.

The sagging of the rope, on the one hand, ensures that the roller 15 endeavors to position itself automatically at the lowest point 29 by virtue of gravity with the suspension for the laser unit 1 attached thereto. As a result, a pivoting movement of the laser unit 1 perpendicular to the pendulum axis 31 is largely avoided. In addition, A torsional movement of the laser unit 1 around the solder 9 is also largely limited since a preferred movement for the roller 15 is predetermined by the transverse strand 11, which substantially prevents a lateral deflection of the roller 15.

The suspension of the laser unit 1 on the roller 15 itself is formed by the roller 15 having a roller shaft 33, in the present case a supported axle, on which both sides of the roller 15 of gravity following strands, in the present case also formed as a rope attached , The strands 35 carry at its lower end similar to a swing a crosspiece 37, to which in turn a further web 39 is attached, which is connected to the housing 5 of the laser unit 1.

This type of suspension proves to be much easier to implement compared to otherwise required elaborate bearings and still allows an appropriate swinging of the laser unit 1 in all directions, with unwanted pivoting movements perpendicular to the pendulum axis 31 and a torsional movement of the laser unit 1 are suitably prevented or are only conditionally approved.

In summary, the invention relates to a pendulum laser device 10 comprising: a housing 5, arranged in the housing 5 pendulum assembly 7 and attached to the pendulum assembly 7 laser unit 1, wherein the laser unit 1 by means of the pendulum assembly 7 regardless of a housing orientation on Lot 9 free and selbstausrichtbar and is designed to produce a perpendicular to the solder 9 oriented laser beam. According to the invention, provision is made for the pendulum arrangement 7 to be in the form of an extensible output Ren pendulum suspension is formed, comprising: a transverse to the Lot 9 transverse strand 11, a freely running on the transverse strand 11 and around the transverse strand 11 rotatable roller 15, and at one end mounted on a roller axle 33 suspension at the other end of the laser unit 1 is mounted ,

Claims

claims

A pendulum laser device (10), in particular for leveling and / or marking, comprising: a housing, a pendulum arrangement (7) arranged in the housing (5) and a laser unit (1) attached to the pendulum arrangement (7), wherein the Laser unit (1) by means of the pendulum assembly (7) independent of a housing orientation on the solder (9) is free and self-aligning and designed to produce a, perpendicular to the solder (9) oriented laser beam,

characterized,

in that the pendulum arrangement (7) is formed in the form of an oscillating pendulum suspension which has: a transverse strand (11) extending transversely to the plumb line (11) at least one roller (11) running freely along the transverse strand (11) and movable around the transverse strand (11) 15), and a suspension which is attached at one end to a roller axle (33) and at the other end the laser unit (1).

2. pendulum laser device (10) according to claim 1, characterized in that the roller axis (33) is rotatable about a transverse to the transverse strand (11) axis only in a limited angular range.

3. pendulum laser device (10) according to claim 1 or 2, characterized in that the transverse strand (11) extends oriented substantially in the laser beam direction.

4. Pendellaser device (10) according to one of claims 1 to 3, characterized in that ends of the transverse strand (11) on two opposite surfaces, in particular front and rear surfaces

(25, 27) are fixed inside the housing (5).

5. pendulum laser device (10) according to one of claims 1 to 4, characterized in that the transverse strand (11) is unstressed, in particular sags.

6. pendulum laser device (10) according to one of claims 1 to 5, characterized in that the suspension has two sides of the roller (15) on the roller axis (33) attached strands.

7. Pendellaser device according to one of claims 1 to 5, characterized in that the suspension has a single on one side of the roller (15) on the roller axis (33) pressed, preferably arcuate, rigid suspension bracket for the laser unit (1).

8. pendulum laser device (10) according to one of claims 1 to 7 characterized in that in that the suspension is mounted pivotably about the roller axle (33) and / or with the roller axle (33).

9. pendulum laser device (10) according to one of claims 1 to 8, characterized in that the roller (15) has a tread with a waisted cross-section.

10. pendulum laser device (10) according to one of claims 1 to 9, characterized in that a limiting element (21) secures the roller (15) against jumping off the transverse strand (11), in particular one above the roller (15) and / or a on the roller (15) attached to the limiting element (21).

11. Pendellaser device according to one of claims 1 to

10, characterized in that a number of preferably two, along the transverse strand (11) arranged behind one another rollers (15) are provided.

12. pendulum laser device (10) according to one of claims 1 to 11, characterized in that the laser unit (1) comprises a line laser and / or a cross-line laser and / or a rotary laser.