JP2007315934A - Laser beam receiver and method of measuring difference in height direction using same laser beam receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laser beam receiver capable of receiving the laser light itself and making the laser light visible even in the light place such as outdoors. <P>SOLUTION: The laser beam receiver 10 comprises: a housing 12 having introducing window 32 and viewing window 30; a target film 20 formed with a translucent light transparent material to be fixed on the introducing window 32 side; a mirror 14 housed in the internal space 28 formed in the housing 12 for communicating the introducing window 32 and viewing window 30; and a hood 24 for covering the periphery of the introducing window 32. By the hood 24, the target film 20, or mirror 14 are inhibited from being exposed by the external light, the laser light 34 can be clearly viewed at the bright place such as the outdoors, in the daytime. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a laser beam receiver for receiving a laser beam emitted from a laser marking device and displaying it visually, and a method for measuring a height difference of a plane using the laser beam receiver.

  2. Description of the Related Art Conventionally, a laser marking device that irradiates an object to be irradiated such as a wall surface or a ceiling with a horizontal or vertical line by a laser beam during construction work such as interior work has been used. In general, the laser beam emitted from the laser marking device is red visible light, and the horizontal and vertical reference lines are set on the wall surface etc. by observing the trace of the emitted laser beam. (Patent Document 1).

  Recently, laser marking devices are frequently used not only for indoor work such as interior work, but also for outdoor work such as formation of a reference surface for foundation work and leveling work. For example, in foundation work outdoors, it is necessary to level the ground foundation at a certain height, but conventionally, a rope was placed between the pillars standing at the four corners, and the height of the rope was The level of the height of the foundation was confirmed by visually observing whether or not it came out on average. However, recently, even when working outdoors such as this foundation work, the level of the object can be measured by irradiating the irradiated object such as the foundation with laser light using a laser marking device. Has been done.

Japanese Patent No. 2929578

  However, the conventional laser marking device is not necessarily suitable for use in bright places such as outdoors during the day. This is because the red laser light emitted from this laser marking device is visible light, but it is very difficult to see the light traces in bright places, and work in places with strong outside light such as outdoors during the day. If you do, it may disappear completely. In this way, the visibility of laser light is inferior under sunlight, so that work using the laser light of this laser marking device during work outdoors during the day, such as foundation work, takes time. There was a problem that was inferior.

  The present invention has been made in view of the above points, and is an auxiliary device for enabling the laser beam itself to be seen even in bright places such as outdoors during the day, i.e., receiving the laser beam and receiving it. It is an object of the present invention to provide a laser beam receiver for visual display.

The present invention further provides a laser light receiver that can easily check whether each position on the plane is the same height and can easily recognize how much the displacement is when there is a displacement. It is an object of the present invention to provide a method for measuring the used height deviation.

  In order to achieve the above object, a laser beam receiver according to the present invention includes a housing in which an introduction window for introducing laser beam, a viewing window for viewing laser beam, and an internal space connecting both windows are formed. A light reflecting member that is provided in the internal space and reflects the laser light entering from the introduction window toward the viewing window; and a laser light passing position that passes through the light reflecting member. It has a laser beam receiving member marked with an optimum position marking line. The present invention is characterized in that a scale indicating the distance from the optimum position marking line is marked on both sides of the laser light receiving member centered on the optimum position marking line. The present invention is characterized in that the laser light receiving member is made of a translucent material. The present invention is characterized in that the laser light receiving member is provided on the introduction window side from the position of the light reflecting member, and a light shielding member is provided outside the position of the laser light receiving member. The present invention is characterized in that a light shielding member is provided outside the position of the viewing window. The present invention includes a light shielding member outside the position on the introduction window side, the laser light receiving member on the viewing window side from the position of the light reflecting member, and a light shielding member outside the position of the laser light receiving member. It is characterized by this. The present invention is characterized in that the light reflecting member is fixed to a support member that is detachably attached to the housing. The present invention provides a holding member that can be detachably attached to the housing by attachment means at any position in the opposite direction of 180 degrees, and a member that is detachably attached to the holding member, and is a member different from the housing. And a fixing means for fixing to the holding member. The present invention is characterized in that a notch used for marking the housing is formed.

  The height deviation measurement method using the laser beam receiver according to the present invention forms an introduction window for introducing laser beam, a viewing window for viewing the laser beam, and an internal space that connects both windows. A housing, a light reflecting member that is provided in the internal space and reflects the laser light entering from the introduction window toward the viewing window, and a laser light passing position that passes through the light reflecting member. A laser beam receiver having an optimum position marking line and a laser beam receiving member having a scale indicating the distance from the optimum position marking line on both sides centered on the optimum position marking line. The laser beam receiver is fixed to the column, the column is placed on the reference position of the measurement location, the laser beam is irradiated horizontally, and the optimum position of the laser beam receiver is The laser beam is matched with a marking line, and then the column is set up at a position other than the reference position to be measured thereafter, and the deviation between the optimum position marking line and the laser beam at that position is read from the scale. .

  In the laser light receiver according to the present invention, the laser light emitted from the laser marking device is taken from the introduction window, reflected by a light reflecting member such as a mirror, and guided to the outside from the viewing window. By looking through the window, the optimum position marking line reflected by the light reflecting member, the scale, and the laser beam can be visually observed. When there is a deviation between the optimum position marking line marked on the laser beam receiving member and the laser beam, the distance of the deviation can be easily confirmed by a scale. In this way, the laser light taken from the introduction window is reflected by a light reflecting member such as a mirror so that the laser light can be seen from the viewing window at an angle different from that of the introduction window. But you can see the laser light. At this time, since the optimum position marking line as well as the scale and the laser beam marked on the laser beam receiving member can be seen, the deviation between the position of the laser beam and the optimum position marking line and its distance can be recognized at a glance. Can do. Since the introduction window for introducing laser light and the viewing window for viewing laser light have different angles, the operator can check the laser light without blocking the laser light, and can easily perform various operations such as inking. it can.

  By covering the periphery of the introduction window and the viewing window with a light shielding member such as a hood and blocking external light such as sunlight, it is possible to prevent external light from directly hitting the laser light receiving member, the light reflecting member, and the like. In this way, by blocking outside light, laser light that was difficult to visually recognize in bright places such as outdoors during the day can be clearly seen, and there is no fear of misidentification, and workability is improved. In addition, if the laser light receiving member is made of a translucent material (for example, frosted glass or cloudy transparent thin plate, etc.), it can be expected to reduce light, and the landscape can enter the field of view beyond the laser light receiving member. This prevents the projected laser light from being seen more easily. Since it is a lightweight and simple configuration that does not require power such as electricity, it can be used in a wide range of outdoor locations.

  The method of measuring the height deviation using the laser beam receiver in the present invention is the optimum method of measuring the laser beam receiver at the reference position when, for example, checking whether the flat surface such as the base striking surface has a uniform height. When the position marking line and the horizontal laser beam are matched, and whether there is a gap between the optimum position marking line and the horizontal laser beam at each position other than the reference position, and there is no deviation Is recognized to have the same height as the reference position. Check if the plane is uniform (if there is a deviation in height). When there is a deviation, the height of the deviation from the reference position can be recognized at a glance by reading the scale at the position projected by the laser beam.

  The laser beam receiver of the present invention is for making laser beams visible even during the daytime when the sun is shining. The height deviation measuring method using the laser light receiver of the present invention can recognize the height deviation with respect to the reference position at a glance by simply placing the laser light receiver at each position on the plane.

  Preferred embodiments of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a laser beam receiver according to the present invention, FIG. 2 is a front view of the laser beam receiver of FIG. 1, FIG. 3 is a plan view of the laser beam receiver of FIG. It is a longitudinal cross-sectional view of a laser beam receiver.

  The laser beam receiver 10 shown in this embodiment mainly includes a housing 12, a mirror 14 as a light reflecting member provided in the housing 12, and supports the mirror 14 and is attached to a predetermined position in the housing 12. Support member 16, a communication ring 18 attached to the housing 12, a target ring 22 attached to the communication ring 18 and provided with a target film 20, and a hood 24 as a light shielding member attached to the target ring 22. And a holding member 26 detachably attached to the housing 12.

  A cylindrical internal space 28 penetrating in the vertical direction in FIGS. 1 and 4 is formed in the housing 14. An opening on the upper side of the internal space 28 is a viewing window 30. An introduction window 32 communicating with the internal space 28 is formed on the front surface of the housing 14. The support member 16 to which the mirror 14 is attached is inserted into the internal space 28 from the lower side opening of the internal space 28, and the mirror 14 is installed at a predetermined position in the internal space 28. As shown in FIG. 4, the mirror 14 reflects the position of the laser beam 34 that has entered from the introduction window 32 and irradiates the laser beam 34 toward the viewing window 30. The position and angle of the mirror 14 are set so that the laser beam 34 is incident on the mirror 14 at an incident angle of 45 degrees and is reflected toward the viewing window 30 at an angle of reflection of 45 degrees.

  In this embodiment, the mirror 14 is fixed to the support member 16 and the support member 16 is attached to the housing 12. However, the mirror 14 may be directly attached to the housing 12. However, by making the support member 16 to which the mirror 14 is attached detachable from the housing 12, the angle of the mirror 14 with respect to the viewing window 30 and the introduction window 32 can be easily adjusted. The light reflecting member is not limited to a mirror as long as it reflects light.

  In the housing 12, a notch 36 extending from each side surface to the back surface side is formed. This notch 36 is used for marking the wall surface or the like with a writing tool or the like when the laser beam 34 irradiates the optimum position of the laser beam receiver 10. On the upper surface of the housing 12, a bubble tube 38 for confirming the degree of balance (horizontal and vertical) of the laser light receiver 10 is provided.

  The target ring 22 having the target film 20 fixed therein is attached to the outside of the introduction window 32 of the housing 12 through the communication ring 18. That is, the target film 20 is set so as to shield the introduction window 34. Note that the target film 20 may be configured to be directly attached to the housing 12 without the communication ring 18 or the target ring 22 or the like (either outside or inside the introduction window 34).

  The target film 20 is for receiving laser light (laser light receiving member), and is for transmitting laser light or projecting laser light. The target film 20 may be completely transparent, but is preferably a thin plate made of a translucent translucent resin material made of a light-transmitting resin material. This is because if it is translucent, it can be expected to have a light-reducing effect, prevent light such as landscape from being transmitted through the film, and make laser light easier to see. The target film 20 is not limited to a resin material, and may be any material as long as it has a property of transmitting or projecting light, such as frosted glass or frosted glass.

  As shown in FIG. 2, an optimum position marking line 40 is marked on the target film 20. The target film 20 has a right-angle marking line 42 marked in a right-angled cross direction with the optimum position marking line 40, and a scale 44 indicating how far the optimum position marking line 40 is located along the right-angle marking line 42. It is marked. The scale 44 is marked with a predetermined interval (for example, 1 mm interval), and a numerical value 46 is clearly specified for each larger predetermined interval (for example, every 10 mm). Thus, the target film 20 has both a function as a neutral density filter and a function as an index.

The hood 24 that is a light shielding member is configured to be detachably attached to the target ring 22, and is attached outside the position of the target film 20. The hood 24 is for preventing external light such as sunlight from irradiating the mirror 14 via the target film 20, and is preferably a long tube with a long dark color such as black. . By providing the hood 24, external light such as sunlight is blocked, and the laser light can be more visually observed. In this embodiment, the hood 24 is provided only on the introduction window 32 side. However, as shown in FIG. 4, a hood 48 (shown by a one-dot chain line) as a light shielding member may be attached on the viewing window 30 side.

  A holding member 26 for fixing the housing 12 to the column 50 (FIGS. 2 and 5) is attached to the back surface of the housing 12 (the surface opposite to the surface on which the introduction window 32 is formed). The support 50 is rod-shaped and is fixed to the laser beam receiver 10 to support the laser beam receiver 10 at a certain height. The holding member 26 includes a plate-like main body 54 provided with a crank portion 52 that bends in a right-angle direction in the middle, a first bolt 56 as an attachment means that is attached to the main body 54 without being separated from the main body 54, and a fixing means. The second bolt 58 is included. The first bolt 56 as an attaching means is for screwing with a female screw portion 60 formed in the housing 12 to attach the holding member 26 to the housing 12. When the holding member 26 is attached to the housing 12 with the first bolt 56, the holding member 26 can be attached to the housing 12 at any position where the holding member 26 is rotated 180 degrees around the position of the first bolt 56. The shape of the holding member 26 is set so that it can be done. This is because one notch 36 is closed by the holding member 26 and cannot be used. However, by making it possible to attach the holding member 26 to either the left or right side of the housing 12, the left or right notch is provided. This is to make it possible to use 36.

  The second bolt 58 as a fixing means is for fixing the support column 50 to the holding member 26. The second bolt 58 includes a shaft portion 62, a fastening knob 64 at one end of the shaft portion 62, and a large diameter holding portion 66 at the other end of the shaft portion 62. The support 50 is placed between the crank portion 52 of the holding member 26 and the large-diameter holding portion 66 of the second bolt 58, and the tightening knob 64 is turned to move the second bolt 58 toward the crank portion 52 of the main body 54. Thus, the support column 50 is sandwiched between the crank portion 52 and the large-diameter holding portion 66, and the support column 50 is fixed to the holding member 26. By fixing the holding member 26 to the housing 12, the laser beam receiver 10 can be fixed to the column 50. The mounting position of the column 50 of the laser beam receiver 10 can be easily changed.

  Next, the operation of the laser light receiver 10 according to the present invention and a specific method of using the laser light receiver 10 will be described with reference to FIG. Here, a description will be given of a case where a horizontal marking line is put on a wall surface or the like outdoors in the daytime when the sun is shining. A conventionally known laser marking device 68 is used as the laser beam emitting device used at this time. The conventionally known laser marking device 68 includes a bubble tube 70 for confirming the balance (horizontal level and vertical level). The laser marking device 68 is set at a certain position and at a certain height, the bubble tube 68 is checked to obtain the balance of the laser marking device 68, and the laser marking device 68 emits horizontal laser light 34. To do. On the other hand, the laser beam receiver 10 is fixed to the column 50 through the holding member 26, the column 50 is set up near the wall surface where the marking line is inserted, and the hood 24 of the laser beam receiver 10 is directed to the laser marking unit 68. The balance of the laser beam receiver 10 is obtained by checking the bubble tube 38.

  The laser beam 34 emitted from the laser marking device 68 is irradiated on the target film 20 in the laser beam receiver 10. For an operator looking through the viewing window 30 above the laser beam receiver 10, the target film 20 on which the optimum position marking line 40 and the scale 44 are marked and the laser beam 34 received by the target film 20 are reflected by the mirror 14. You can see what is reflected.

  Here, the figure which looked at the target film of the state which received the laser beam 34 from the introduction window side is shown in FIG. 6, and the figure which looked at the viewing window of the state which received the laser beam 34 is shown in FIG. 6 and 7, the laser beam 34 is parallel to the optimum position marking line 40, but shows a state where it is irradiated at a position slightly below the optimum position marking line 40 in FIG. Since both the laser beam receiver 10 and the laser marking unit 68 have a horizontal level and a vertical level, the laser beam 34 appears in a state parallel to the optimum position marking line 40. The deviation between the laser beam 34 and the optimum position marking line 40 shown in FIG. 6 can also be visually observed from the viewing window 30 as shown in FIG. The distance of this deviation can be recognized by the operator by reading the scale 44 from the viewing window 30. If there is a deviation between the laser beam 34 and the optimum position marking line 40, the laser beam receiver 10 is moved with respect to the column 50 (in this case, the height of the laser beam receiver 10 with respect to the column 50). The laser beam receiver 10 is adjusted to an appropriate height. When the laser beam 34 (red) and the optimum position marking line 40 of the target film 20 overlap, the laser beam receiver 10 is at an appropriate height. In this state, the notch 36 formed in the housing 12 is used to write with a writing instrument or the like. Put inking line as a landmark on the wall.

  In the laser beam receiver 10 of the present embodiment, the target film 20 that has received the laser beam 34 is reflected by the mirror 14 so that the laser beam 34 and the target film 20 can be seen from the viewing window 30 side. The laser light 34 that is generally difficult to see in the outdoors where sunlight falls can be seen through the laser light receiver 10. In the present invention, the optimum position marking line 40 and the scale 44 and the laser beam 34 can be seen, and further, the scale 44 shows how much the laser beam 34 and the optimum position marking line 40 are misaligned. The laser beam receiver 10 can be easily adjusted to an appropriate height. In the present invention, the laser beam 34 irradiated in the horizontal direction is looked downward from the upper viewing window 30, so that the work can be performed without interfering with the horizontal laser beam 34, and the viewing window 30. Workability is improved because you can work while looking through. Furthermore, since the hood 24 for blocking sunlight is provided outside the position of the target film 20, the target film 20 is mainly irradiated with the laser beam 34, and the laser beam 34 can be seen more clearly. . By attaching the hood 48 also to the viewing window 30 side, a more effective light shielding effect can be expected. In addition, the laser light receiver 10 according to the present invention has a light and simple configuration that does not require power such as electricity, and therefore can be applied to a wide range of outdoor work places.

  Next, another embodiment of the present invention will be described with reference to FIG. 8, the same reference numerals as those in FIGS. 1 to 4 denote the same members. In the first embodiment, the target ring 22 including the target film 20 is disposed on the introduction window 32 side. However, in the second embodiment, the target ring 22 including the target film 20 is viewed from the position of the mirror 14 through the viewing window 30. Place on the side. That is, the communication ring 18 is attached to the viewing window 30 side of the housing 12, and the target ring 22 including the target film 20 is attached to the communication ring 18. A hood 48 as a light shielding member may be attached to the target ring 22. Further, the communication ring 18 and the target ring 22 may be omitted, and the target film 20 may be directly attached to the viewing window 30 side of the housing 12. On the introduction window 32 side of the housing 12, a hood 24 as a light shielding member is attached outside the position of the introduction window 32. This hood 24 is for preventing sunlight from being applied to the mirror 14.

  In the second embodiment, the laser beam 34 irradiated from the introduction window 32 toward the mirror 14 is reflected by the mirror 14 and projected or transmitted to the target film 20. An operator viewing the target film 20 from above can see the optimum position marking line 40 and the scale 44 of the target film 20 and the laser beam 34 projected onto or transmitted through the target film 20. As a result, Example 2 can obtain the same effect as Example 1.

As described above, the laser light receiver 10 according to the present invention is used for the purpose of inking work to put inking lines on the outdoor wall surface as described above. As another method of use, it is used to measure whether or not the height at each position of the foundation striking surface of the construction site is uniform (measurement of height deviation). In this case, the lower end of the support column 50 is brought into contact with the construction site, for example, at the center position of the foundation striking surface, and the laser beam receiver 10 with respect to the support column 50 is overlapped with the optimum position marking line 40 of the target film 20. The height is adjusted and the support 50 and the laser beam receiver 10 are fixed. The height at the position where the column 50 and the laser beam receiver 10 are fixed is set as the height of the reference position. Thereafter, it is measured whether or not the laser beam 34 matches the optimum position marking line 40 at each position on the foundation striking surface of the construction site. If the laser beam 34 coincides with the optimum position marking line 40, the position is found to be the same height as the reference position. If the laser beam 34 does not match the optimum position marking line 40, it can be seen that the measurement position is deviated from the height of the reference position. The height of the deviation can be grasped by reading the numerical value on the scale 44.

  As described above, the laser beam receiver according to the present invention can be used as an instrument that receives the laser beam emitted from the laser marking device 68 and puts marking lines on the irradiated object such as a wall. The height deviation measuring method using the laser beam receiver according to the present invention is such that, for example, a horizontal laser beam 34 is irradiated above a plane such as a foundation striking surface of a construction site, and the laser beam receiver Whether or not the plane is uniform by checking whether there is a deviation between the optimum position marking line 40 of the laser beam receiver 10 and the laser beam 34 at each position on the plane of the column 50 to which the laser beam 10 is attached (high If there is a deviation, the deviation distance can be recognized by reading the scale 44 indicating the distance from the optimum position marking line 40.

It is a disassembled perspective view of the laser beam receiver which concerns on this invention. It is a front view of the laser beam receiver which concerns on this invention. It is a top view of the laser beam receiver concerning the present invention. It is a longitudinal cross-sectional view of the laser beam receiver which concerns on this invention. It is a perspective view which shows the use condition of the laser beam receiver which concerns on this invention. It is a front view which shows the target film in the use condition of the laser beam receiver which concerns on this invention from the introduction window side. It is a top view which shows the observation window in the use condition of the laser beam receiver which concerns on this invention. It is a longitudinal cross-sectional view which shows the other Example of the laser beam receiver based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Laser beam receiver 12 Housing 14 Mirror 16 Support member 20 Target film 24 Hood 26 Holding member 28 Internal space 30 Viewing window 32 Introduction window 34 Laser beam 40 Optimal position marking line 44 Scale 48 Hood 50 Support column 54 Body 56 First bolt 58 Second bolt

Claims (10)

  A housing that forms an introduction window for introducing laser light, a viewing window for viewing the laser light, and an internal space that connects both of the windows, and laser light that is provided in the internal space and enters from the introduction window A light reflecting member that reflects the light toward the viewing window, and a laser light receiving member that is provided at a laser light passing position that passes through the light reflecting member and that indicates an optimum position marking line. Laser light receiver.   2. The laser beam receiver according to claim 1, wherein a scale indicating a distance from the optimum position marking line is marked on both sides of the laser beam receiving member centered on the optimum position marking line.   2. The laser beam receiver according to claim 1, wherein the laser beam receiving member is made of a translucent material. 2. The laser light receiver according to claim 1, wherein the laser light receiving member is provided on the introduction window side from the position of the light reflecting member, and a light shielding member is provided outside the position of the laser light receiving member. The laser beam receiver according to claim 4, further comprising a light shielding member outside the position of the viewing window. A light shielding member is provided outside the position on the introduction window side, the laser light receiving member is provided on the viewing window side from the position of the light reflecting member, and a light shielding member is provided outside the position of the laser light receiving member. The laser beam receiver according to claim 1.   The laser light receiver according to claim 1, wherein the light reflecting member is fixed to a support member that is detachably attached to the housing. A holding member that can be detachably attached to the housing at any position in the opposite direction by 180 degrees, and a member that is displaceably attached to the holding member, and a member different from the housing is fixed to the holding member. The laser beam receiver according to claim 1, further comprising fixing means for performing the operation.   The laser beam receiver according to claim 1, wherein a notch used for marking the housing is formed.   A housing that forms an introduction window for introducing laser light, a viewing window for viewing the laser light, and an internal space that connects both of the windows, and laser light that is provided in the internal space and enters from the introduction window And a light reflecting member that reflects the light toward the viewing window, and a laser beam passing position that passes through the light reflecting member, the optimum position marking line and the optimum position marking line on both sides. A laser beam receiver having a laser beam receiving member indicating a scale indicating a distance from the optimum position marking line, the laser beam receiver being fixed to a support column, and a reference position of a location to be measured; In addition, the column is set up, the laser beam is irradiated horizontally, the laser beam is aligned with the optimum position marking line of the laser beam receiver, and then the position other than the reference position to be measured is measured. The upright post, the height displacement measuring method of using a laser light receiving unit, characterized in that to read the deviation between the optimum position marking line and the laser beam at the position from the scale in.

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