Marking and/or leveling device

A technology for leveling and marking, which is used in measuring devices, active optical measuring devices, measuring instruments, etc., and can solve the problems of high structure, cumbersome and high cost of pendulum system.

Inactive Publication Date: 2010-09-15
ROBERT BOSCH GMBH
1 Cites 3 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The disadvantage of this robust pendulum system is the cumbersome and costly production of the cross joint, which must work with very little friction
[0003] Furthermore, all...
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Abstract

The invention relates to a marking and/or leveling device (1) comprising a light source (4) disposed on a pendulum (3) that can pivot relative to a housing (2). According to the invention, means are provided for accelerating (9) the pendulum (3) and/or a pendulum bearing (8) in a pulsing manner.

Application Domain

Reference line/planes/sectorsOptical elements

Technology Topic

Light sourceEngineering +1

Image

  • Marking and/or leveling device
  • Marking and/or leveling device
  • Marking and/or leveling device

Examples

  • Experimental program(1)

Example Embodiment

[0018] In the drawings, the same structural parts and structural parts with the same function are denoted by the same reference numerals.
[0019] in figure 1 The marking and/or leveling device 1 is shown in a schematic diagram. The marking and/or leveling device includes a housing 2 and a pendulum 3 that is supported relative to the housing 2 so as to be deflectable relative to the housing 2 in all spatial directions. The pendulum 3 is configured as a rigid connecting rod element and carries a light source 4 configured as a laser diode on its lower end in the plane of the drawing, which is used to generate a laser beam 5 in a point or line shape along the cross section. With this laser beam, a point-like or linear horizontal laser line can be projected onto the projection plane.
[0020] On the upper end of the light source 4 in the plane of the drawing, the hard pendulum 3 has a ball head 6 which forms a self-adjusting bearing 8 together with an annular bearing receiver 7. The bearing receiving portion 7 is firmly connected to the housing 2 and is penetrated downward by the pendulum 3 in the plane of the drawing. In other words, the ball head 6 is placed on the bearing receiving portion 7.
[0021] in figure 1 , The pendulum 3 is located in a position different from the vertical direction without orientation. In order to orient the pendulum 3 vertically, a mechanism 9 shown only schematically is provided for impulsively accelerating the pendulum 3. In the illustrated embodiment, the mechanism 9 is arranged directly on the pendulum 3. As a supplement or alternative, the mechanism 9 can be arranged on the light source 4 or on the bearing receiving portion 7, that is to say on the self-adjusting bearing 8 (refer to the mechanism 9 drawn in dashed lines). It is also conceivable that all the aforementioned components are provided with a separate mechanism 9 for pulsed acceleration. In the simplest case, the mechanism 9 for pulsed acceleration of the pendulum 3 is constructed as an electric motor with an unbalanced part. If the mechanism 9 for pulsed acceleration of the pendulum 3 is activated, the mechanism is placed in vibration and undergoes a pulsed movement relative to the bearing receiver 7 and the housing 2, whereby the pendulum 3 With the light source 4 occupying its center of gravity, the pendulum 3 is oriented so that the light source 4 places a horizontal mark on the projection plane.
[0022] in figure 1 In the illustrated embodiment, the bearing receptacle 7 of the self-adjusting bearing 8 simultaneously forms the non-adjustable element 10 of the (passive) braking device 11. In the pulse interval, the friction fit connection between the ball head 6 and the element 10 (bearing receiving portion 7) achieves rapid braking of the pendulum 3, so that the leveling time for the vertical orientation of the pendulum 3 is short.
[0023] Pressing figure 2 In the embodiment, in addition to the self-adjusting bearing 8, a separate braking device 11 is also provided. The braking device includes a (brake) element 12 that can be adjusted actively, manually or automatically relative to the ball head 6 of the pendulum 3, and the element can be friction-fitted against the ball in the release position shown. The braking position on the head 6 is adjusted along the arrow direction 13. By adjusting the adjustable element 12 into the release position shown, the mechanism 9 for pulsed acceleration of the pendulum 3 is automatically activated, thereby placing the pendulum in vibration and positioning it relative to the housing. 2Twist in the self-adjusting bearing 8. The vibration of the pendulum 3 achieved by the mechanism 9 for pulsed acceleration is indicated by the arrow 14. Since the vibrating motion of the pendulum 3 overcomes the bearing friction of the self-adjusting bearing 8, and the restoring force 15 caused by gravity is sufficient to orient the pendulum 3 vertically, the horizontally and/or vertically-oriented light marks can be assisted by the light source 4 The light beam 5 is projected onto a projection plane not shown. As a supplement or alternative, the mechanism 9 can be arranged on the self-adjusting bearing 8 (refer to the mechanism 9 shown in dashed lines).
[0024] in figure 1 with 2 The marking and/or leveling device 1 shown in FIG. 1 has a particularly robust construction compared to the marking and/or leveling devices disclosed in the prior art. In addition, the pendulum 3 is relatively short, so that the entire marking and/or leveling device 1 is constructed relatively low.

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Description & Claims & Application Information

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