JPH073985U - Laser device for marking out - Google Patents

Abstract

(57) [Abstract] [Purpose] An optical system using a lens is not required, the structure is simple, the number of parts is reduced, and the size and weight can be reduced. The aim is to make it very easy to do. A marking laser device comprising a laser tube for projecting a laser beam and a projecting means capable of projecting a spot on a passage of the laser beam, wherein the projecting means comprises a plate 9 having a hole 8 for passing the laser beam. Is to be.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a marking-out laser device that projects a laser beam onto a ceiling or the like and is mainly used for marking-out work for construction.

[0002]

[Prior art]

 Conventionally, as this kind of marking out laser device, for example, there is one described in Japanese Utility Model Publication No. 2-66979 developed by the applicant of the present application. The laser device described in the publication is a stationary type that is equipped with a laser tube for projecting a laser beam and has legs and is placed on the floor. It is vertically above and below the laser tube. A laser beam was projected onto the spot and spot-printed on the floor and ceiling to perform marking. An optical system device using a lens was built in as a means for spot-projecting the laser beam.

[0003]

[Problems to be solved by the device]

 However, the above-described conventional marking-out laser device has the drawbacks that it requires an optical system using a lens, which makes it extremely expensive and complicated in structure.

Further, at a construction site of a high-rise building in recent years, it is necessary to carry in the marking-out laser device to the upper layer to carry out marking-out work. Therefore, a lightweight and simple marking-out laser device is required. Although requested, the laser device for marking out is inevitably increased in size due to the heavy weight of the device and the need for an optical system device. It has a drawback that it is very difficult to carry out.

The present invention has been made in view of the above-mentioned conventional problems, and an optical system device using a lens is not required, and the structure is simple and the number of parts is reduced to reduce the size and weight. It is an object of the present invention to provide a marking-out laser device that makes it possible to carry out and carry out the marking-out work site very easily.

[0006]

[Means for Solving the Problems]

 The present invention has been made as a laser device for marking out in order to solve the above-mentioned problems, and is characterized by a laser tube for projecting a laser beam and a projection means capable of projecting a spot on the passage of the laser beam. In the marking-out laser device, the projecting means comprises a plate 9 having a laser beam passage hole 8.

Further, an upper laser tube 4a for projecting a laser beam upward and a laser tube 4b for projecting a laser beam downward are provided, and both laser tubes 4a and 4b are semiconductor laser tubes.

[0008]

[Action]

 In the marking laser device of the present invention, the laser beam projected from the laser tube 4a passes through the minute laser beam passage holes 8 of the plate 9 to form a spot on the projection surface such as the ceiling and floor. It becomes possible to project.

Therefore, the plate 9 having the minute laser beam passage holes 8 can be used in place of the optical system device used in the conventional device, and the projection surface can be a very simple means. It is possible to project a spot on the.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, reference numeral 1 is a small portable laser device for marking out, and a pair of upper and lower small semiconductor laser tubes 4a and 4b are provided inside a casing body 2 made of a cylindrical acrylic resin. A cylindrical protection tube 5 is held via a gyro mechanism 6. The gyro mechanism 6 partially supports the upper end of the protective tube 5 and adjusts the posture of the protective tube 5 so that the central axes of the laser tubes 4a and 4b always face the vertical direction. Reference numeral 3 is a ceiling wall that closes the upper surface of the casing body 2, and a laser beam passage hole 3a is formed in the center thereof.

A plate 9 having a fine laser beam passage hole (about 1 mm) 8 formed at the center is attached to the upper surface of the upper laser tube 4a, and the laser beam projected upward from the laser tube 4a is attached. By passing through the passage hole 8, it can be projected as spots on the ceiling 28.

A plate 12 having a fine laser beam passage hole 11 is also provided on the lower surface of the lower laser tube 4b, and the laser beam projected downward from the laser tube 4b is passed through the plate. By passing through 11, it is possible to project as a spot on the floor surface 29.

A magnet 16 attached to a pair of upper and lower support plates 15 is provided in the lower portion of the casing body 2, and a weight 17 having a through hole 17a at the center is provided between the magnets 16 so as to be located between the magnets 16. A disc-shaped copper plate 19 is attached to the lower end of the protective tube 5. Reference numeral 20 denotes a cylindrical stopper that prevents the protection tube 5 from swinging, and is attached to the lower support plate 15 so as to be retractable so as to be fitted onto the weight 17. Further, a plate-shaped glass 21 which can transmit a laser beam is fitted in the stopper 20.

Reference numeral 23 denotes an auxiliary casing attached to the lower part of the casing body 2 and formed in a tubular shape from transparent or translucent acrylic resin. The auxiliary casing 23 has a lower end at a lower end than the auxiliary casing 23. A base plate 24 having a large diameter is attached.

The base plate 24 is made of a transparent or translucent acrylic resin like the auxiliary casing 23. Therefore, the laser beam projected from the lower laser tube 4b is not included in the auxiliary casing 23 and the base plate. It is visible through 24. In addition, jack bolts 25 as a plurality of legs are screwed into a portion of the base plate 24 that projects from the auxiliary casing 23, and a battery box 26 that supplies power to the laser tubes 4a and 4b is attached. Has been.

The marking-out laser device 1 according to the present embodiment is configured as described above. Next, a case will be described in which marking-out work is performed on the ceiling by ground marking on the floor. First, the marking-out laser device 1 is carried to a predetermined floor. At this time, by pushing the stopper 20 and fitting it on the weight 17, the protective tube 5 can be prevented from swinging.

Next, after pulling out and releasing the stopper 20, the marking laser device 1 is placed on the floor surface 29 as shown in FIG. 3, and power is supplied to both the laser tubes 4a and 4b to move them up and down. A laser beam is projected onto. In this case, the protection tube 5 swings by the gyro mechanism 6, but since the copper plate 18 provided at the lower end of the protection tube 5 is located between the magnets 16, the magnetic field formed between the magnets 16 causes the copper plate body 18 to move. An eddy current is generated to control the swing of the protection tube 5, and vertical adjustment is quickly performed.

The laser beam projected from the lower laser tube 4b and passing through the minute laser beam passage hole 11 of the plate 12 goes straight downward in the vertical direction and is projected onto the floor surface 29 as a spot. When matching the spot 30 with the ground ink on the floor surface 29, the operator can visually check the spot 30 and the ground ink through the auxiliary casing 23 and the base plate 24, so that the ink can be easily and quickly detected. The position of the laser device 1 can be accurately set.

On the other hand, the laser beam projected from the upper laser tube 4 a and passing through the fine laser beam passage hole 8 of the plate 9 goes straight upward in the vertical direction, and the spot 32 is projected on the ceiling 28. By this, marking on the ceiling 28 can be performed.

As described above, the marking-out laser device 1 employs the small-sized semiconductor laser tubes 4a and 4b and allows the laser beam to pass through the fine laser beam passage holes 8 and 11 of the plate 12, respectively. As a result, since the configuration is such that the spot is projected, the size and weight of the device can be reduced, the number of parts can be reduced, the structure can be simplified, and the cost can be reduced.

Moreover, the operator does not need to adjust the focus of the spot unlike the optical system device using the lens, and the operation is simple.

It should be noted that the present invention is not limited to the above-described embodiment, and a lens or the like capable of projecting a plurality of spots 32a on the ceiling 28 on the upper surface of the ceiling wall 3 as shown by phantom lines in FIG. The spectroscopic means 33 can also be provided. By providing the spectroscopic means 33, for example, it is possible to simultaneously perform 4-point marking for positioning the anchor bolts for attaching the air conditioner, which has the advantage of improving work efficiency. In addition, in order to perform this 4-point marking, a spectroscopic means is provided in the laser beam passage of the lower laser tube 4b in order to perform relative positioning with respect to the ceiling 28 of the 4-point marking. It is preferable to match

Further, in the above-mentioned embodiment, an acrylic resin material having less polarization is adopted as the auxiliary casing 23, but the auxiliary casing 23 may be made of other resin or glass. Further, although the transparent or semi-transparent auxiliary casing 23 is provided in the lower portion of the casing body 2, the casing body 2 can be made transparent or the like instead of the auxiliary casing 23. In short, the laser beam is passed through the lower portion of the casing. It is enough if it can be seen.

Further, although the semiconductor laser tubes 4a and 4b for projecting the same amount of light are adopted, the present invention is not limited to the case of projecting the same amount of light. In addition, laser beams for helium neon gas laser beams are not limited to those for semiconductors. It doesn't matter what kind it is. Further, the overall shape and the specific structure of the internal structure of the marking-out laser device 1 are not limited to those in the above embodiment, and the design can be changed arbitrarily.

[0025]

[Effect of device]

 The present invention provides a marking laser device comprising a laser tube for projecting a laser beam and a projection means capable of projecting a spot on the passage of the laser beam, wherein the projection means has fine laser beam passage holes. Since it consists of a plate, unlike conventional systems, there is no need for an optical system device that uses a lens, and the structure is simple and the number of parts can be reduced. As a result, the cost can be reduced, the device can be made smaller and lighter, and it is very easy to carry in and out at the marking work site, and its practical value is significant. Is.

An upper laser tube for projecting a laser beam upward and a laser tube for projecting a laser beam downward are provided. When both laser tubes are semiconductor laser tubes, further miniaturization can be achieved and the apparatus can be Despite its small size, it is possible to reliably project a clear spot on the ceiling and floor.

[Brief description of drawings]

FIG. 1 is a sectional front view of a marking-out laser device.

FIG. 2 is an overall perspective view of the same.

FIG. 3 is a perspective view showing a usage state of the present invention.

[Explanation of symbols]

4a, 4b ... Laser tube, 8 ... Hole for passing laser beam, 9 ...
plate

Claims (2)

[Scope of utility model registration request] 1. A laser tube for projecting a laser beam,
In the laser device for marking out, which comprises a projection means capable of projecting a spot on the passage of the laser beam, the projection means comprises a plate (9) having fine laser beam passage holes (8). Laser device for marking out. 2. An upper laser tube (4a) for projecting a laser beam upward and a laser tube (4b) for projecting a laser beam downward, both laser tubes (4a), (4b) being a semiconductor laser tube. The laser device for marking out according to claim 1.