JPH0639286Y2 - Spot laser equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a spot laser device, and more specifically, a spot laser device for performing vertical marking from a floor surface to a ceiling accurately and efficiently, mainly for construction. Regarding

(Prior Art) Conventionally, as this kind of spot laser device, there is one as shown in FIG.

That is, this spot laser device is equipped with a laser tube 1
The gyro 6 automatically adjusts the protection tube 2 in which is integrated inside vertically, and the protection tube 2 is housed in the windshield 3 supported by a tripod 17 so as to be swingable. Laser light is projected from the upper and lower ends of the.

When the laser tube 1 is used, the apparatus itself is set so that the projection point of the laser beam projected vertically downward from the laser tube 1, that is, the spot, is aligned with the ground ink marked on the floor surface and the like. By projecting laser light projected more vertically upward to the ceiling or the like, a mark is added at the spot and vertical marking is performed on the ceiling or the like.

(Problems to be Solved by the Invention) In the conventional spot laser device described above, the laser tube 1 and the protection tube 2 are vertically adjusted by slightly swinging by the gyro 6. When vibrating, the vibration causes the laser tube 1 that has been stopped to swing again.

As a result, the spot that is once projected on the ceiling or the like that matches the ground ink on the floor tends to shift carelessly, and it is difficult to accurately determine the stop position of the spot. Especially, in the high floors, the above problem is remarkable. It was.

Further, since the protection tube 2 is configured to swing with respect to the windshield 3, the protection tube 2 swings and abuts on the windshield 3 during transportation of the device, so that the components such as the protection tube 2 and the gyro 6 are attached. There was also a risk of damage.

The present invention was devised in view of the above problems, and its purpose is to prevent the protective tube from swinging inadvertently with respect to the windshield, and to provide vertical marking from the floor surface to the ceiling. PROBLEM TO BE SOLVED: To provide a spot laser device capable of accurately performing the above-mentioned operation and preventing damage to components such as the protective tube 2 caused by the protective tube being inadvertently brought into contact with the windshield during transportation. Is an issue.

(Means for Solving the Problems) The present invention has been made to achieve the above-mentioned object and thus to solve the conventional problems, and the gist of the configuration is a laser tube 1 for projecting a laser beam in the vertical direction. Is integrally incorporated in the protection tube 2, and the protection tube 2 is housed in the windshield 3, and the protection tube 2 is provided so as to be swingable with respect to the windshield 3 so as to be vertically oriented. In this spot laser device, a plurality of stoppers 7 for locking the outer peripheral surface 8 of the protection tube 2 to stop the swinging of the protection tube 2 are attached to the windshield 3. It is to be able to move forward and backward.

(Operation) Therefore, in the spot laser device characterized by the above configuration, the plurality of pressing bodies 7 provided on the windshield 3 are advanced toward the vertically adjusted protection tube 2, and each pressing body is moved. 7 is locked to the outer peripheral surface 8 of the protective tube 2. The protection tube 2 is pressed against the pressing body 7 from a plurality of directions and its movement is blocked, so that the protection tube 2 is completely fixed and no laser light is struck from the laser tube 1 in the protection tube 2. It is possible to project in the up and down direction without doing.

Further, when the spot laser device is transported or the like, it becomes possible to fix the stopper body 7 by bringing it into contact with the protective tube 2 in the same manner as described above, and the protective tube 2 swings and comes into contact with the windshield 3. Nothing.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a helium-neon gas laser type laser tube of 1 mmW straight polarization type. The laser tube 1 is a protective tube 2 made of aluminum whose upper and lower ends are open.
It is integrated inside with the axes aligned.
Reference numeral 3 denotes a cylindrical windshield made of aluminum in which the protection tube 2 is housed inside in a state where a substantially pointed lower end portion 4 of the protection tube 2 is projected downward, and the upper end of the windshield 3 has a polygonal shape. A head 5 made of aluminum having a shape is provided. Reference numeral 6 denotes a gyro which is provided in the head portion 5 and which connects the upper end of the protection tube 2, and the gyro 6 automatically adjusts the axial center of the protection tube 2 in the vertical direction.

7,7,7 are located at approximately the center of the windshield 3 as shown in FIG.
3 push-stop bodies screwed so as to be capable of advancing and retracting toward the center part thereof so as to be locked to the outer peripheral surface 8 of the protection tube 2 at intervals of 20 ° are shown. It consists of knob part 10.

Reference numeral 11 denotes a cylindrical and transparent plastic stopper tube which is fitted on the outer peripheral surface of the lower end portion 12 of the windshield 3 so as to be able to move up and down. Two O-rings 13, 13 are attached to the outer peripheral surface of the portion 12 in a ring manner.

As shown in FIG. 3, reference numeral 14 denotes a transparent plastic stopper plate which is horizontally provided by being screwed on the lower side of the stopper tube 11 with a screw 15 as shown in FIG.
A hole 16 into which the pointed lower end 4 of the protection tube 2 can be fitted is formed in the center of the.

Reference numeral 17 denotes an aluminum tripod attached to the lower surface of the head 5 so as to be openable and closable with a fixing screw 18, and an adjusting screw 19 is screwed vertically to the lower end of each tripod 17.
Reference numeral 20 denotes a switch mounted on the upper surface of the head 5, and reference numeral 21 denotes a power cord for supplying a current to the laser tube 1 and the gyro 6 via the switch 20.

As shown in FIG. 4, 22 is a disk-shaped black formed by integrally sandwiching a mesh-like body 23 dyed black and entirely plated with copper from both sides with glass bodies 24, 24. 2 shows a spot projection body, and the black spot projection body 22 is two holders.
It is held inside by 25,25.

Reference numeral 26 denotes a projection body mounting portion formed in the center of the upper surface of the head 5 in the form of a concave groove so that the holders 25, 25 can be inserted and installed, and the laser light projected from the upper end of the laser tube 1 is passed through. Let

The spot laser apparatus according to the present embodiment has the above-described configuration. Next, a case will be described in which the spot laser apparatus 27 is used to perform vertical marking on the ceiling from ground marking marked on the floor, for example.

First, the switch 20 of the spot laser device 27 is turned on, and laser light is projected from the upper and lower ends of the laser tube 1.

At this time, by lowering the stopper tube 11 to separate the stopper plate 14 from the lower end portion 4 of the protective tube 2,
Since the protective tube 2 accommodating the laser tube 1 is automatically adjusted vertically by the rotation of the gyro 6, even if the spot laser device 27 is not in the vertical state due to the inclination of the floor surface 28, the lower end of the laser tube 1 The laser light projected by the light travels vertically downward and is projected as a spot-like spot A on the floor surface 28.

If the protection tube 2 swings violently, the stopper tube
By gently lifting 11 and inserting the lower end portion 4 of the protective tube 2 into the hole 16 of the stopper plate 14, the protective tube 2
Stop along the windshield 3 and then stop the stopper tube.
It is also possible to slowly lower 11 to remove the stopper plate 14 from the lower end portion 4 of the protective tube 2 and make the protective tube 2 vertical.

In the state where the spot A projected downward from the laser tube 1 in the vertical state is matched with the ground ink 29 marked on the floor surface 28, as shown in FIG. 5, the three stoppers 7, 7, 7 By turning the knob portion 10 in sequence to screw the screw portion 9 into the windshield 3, and by locking the tip of the screw portion 9 to the outer peripheral surface 8 of the protective tube 2 at equal intervals of 120 °, the protective tube 2 is clamped from the three sides with the stoppers 7,7,7 and fixed.

Therefore, as shown in FIG. 6, the laser light projected from the upper end of the laser tube 1 goes straight upward in the vertical direction, passes through the black spot projection body 22, and the black spot B is formed as a set of substantially cross points. By projecting the image on the ceiling 30 in a completely fixed state, and marking the cross 30 along the black spot B in a cross shape, the vertical marking operation is completed.

As described above, in the spot laser device of this embodiment, after the protective tube 2 is vertically adjusted by the gyro 6, the three stoppers 7, 7, 7 screwed to the windshield 3 are sequentially installed in the windshield 3. The outer peripheral surface 8 of the protective tube 2 can be locked by the respective stoppers 7, 7 and 7 by turning it so as to be screwed in, and the three stoppers 7, 7, 7 are attached to the protective tube 2. Since the protective tube 2 cannot be swung in any direction because it is pressed from three directions at an angular interval of 120 °, the protective tube 2 can be securely fixed in the windshield 3. .

In addition, when transporting the spot laser device and when not in use,
By raising the stopper tube 11 together with the stoppers 7, 7, 7, the protective tube 2 is inserted into the hole 16 of the stopper plate 14.
By inserting the lower end portion 4 of the protection tube 2 into the windshield 3, the protection tube 2 can be securely fixed.
It will not come into contact with and be damaged.

In addition, in the above embodiment, the three windshields are screwed to the windshield, but the present invention is not limited to this. The point is that the outer peripheral surface of the protective pipe is locked and It suffices that a plurality of stoppers for stopping the swinging are provided on the windshield, and the stoppers need not be provided at equal intervals as in the above embodiment.

In addition, the pressing body does not need to be screwed to the windshield so as to be screwed into the windshield, and the pin may be tightly searched for in the windshield. It may be provided on the windshield.

Further, in the above embodiment, the laser light projected from the upper end of the laser tube is transmitted through the black spot projector and projected as a black spot which is a set of substantially cross-shaped points on the ceiling. The invention is not limited to this, and one spot may be projected without passing through the black spot projection body.

Further, a half mirror may be arranged at an angle of 45 ° so as to horizontally reflect half of the laser light projected from the upper end of the laser tube. Although it is possible to draw out, if the protection tube is completely fixed with a pressing body as in the present invention, especially for horizontal marking to project on a long distance such as a wall surface,
It is effective because it does not cause any spot deflection.

Further, in the above embodiment, since the adjusting screws are respectively screwed to the lower ends of the tripods that support the windshield, when the protective tube is inclined to some extent due to the inclination of the floor surface, the adjusting screw is adjusted. After correcting the device itself in the vertical direction by
After moving the stopper tube up and down to make the protection tube stand still, there is an advantage that the protection tube can be stopped in the vertical state without difficulty and then the protection tube can be fixed by the stopper.

Further, in the above-mentioned embodiment, the stopper plate which is a separate body is fixed inside the stopper pipe by screws and is laterally provided. However, the stopper plate may be formed integrally with the stopper pipe, and the stopper pipe may be If it is transparent as in the above embodiment, the inside can be visually observed and its operability can be improved, but it is not limited to a transparent one. Also, the stopper tube is not an essential requirement of the present invention.

Further, in the above-mentioned embodiment, the O-ring is attached to the lower end of the windshield, which has the advantage that the stopper tube can be fitted in the outer peripheral surface of the lower end in a dense and smooth manner so that it can be moved up and down. The O-ring is not a prerequisite for the present invention.

In addition, the laser tube is not limited to the helium neon gas laser, but may be a solid-state laser width semiconductor laser or the like, and the configuration of each part of the other spot laser devices can be freely designed within the scope intended by the present invention. INDUSTRIAL APPLICABILITY The present invention is not limited to the vertical marking for construction and is widely used for vertical measurement.

(Effect of the Invention) As described above, since the spot laser device of the present invention is provided with a plurality of stoppers for stopping the swing of the protection tube in the windshield, the stoppers are installed in the windshield. The protective tube from multiple directions by the stopper,
It is possible to completely stop the swing of the protection tube. Therefore, since the protection tube is in an unstable state in the past, compared with the fact that the spot projected by the laser beam was easy to inadvertently shake, especially on the upper floors, the spot was fixed by the operation of the stopper, The position of the spot can be accurately and quickly determined, and the remarkable effect that the work efficiency can be further improved at the same time as the accurate marking is achieved.

Further, since the protective tube can be fixed by the pressing body as described above, it is possible to prevent the structural members such as the protective tube from being inadvertently damaged due to the impact of the protective tube coming into contact with the windshield during transportation of the device. There is an advantage that it can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a spot laser device according to the present invention. FIG. 2 is a plan sectional view of the windshield. FIG. 3 is a perspective view showing a stopper tube. FIG. 4 is an exploded perspective view showing the black spot projection body and its holder. FIG. 5 is a plan sectional view of the windshield showing a state in which the protection tube is fixed. FIG. 6 is a perspective view showing a usage state of the spot laser device. FIG. 7 is a front view showing a conventional spot laser device. 1 ... Laser tube, 2 ... Protective tube, 3 ... Windshield, 7 ...
Pressing body, 8 …… Protective tube outer peripheral surface, 9 …… Screw part, 10 ……
Knob part

Claims (3)

[Scope of utility model registration request] 1. A laser tube 1 for vertically projecting a laser beam is integrally incorporated in a protective tube 2, and the protective tube 2 is housed in a windshield 3, and the protective tube 2 is oriented vertically. In the spot laser device which is swingably provided with respect to the windshield 3, the windshield 3 is locked with the outer peripheral surface 8 of the protection tube 2 to swing the protection tube 2. A spot laser device, wherein a plurality of stoppers 7 for stopping are provided so as to be able to move forward and backward toward the protective tube 2. 2. The spot laser device according to claim 1, wherein the number of the pressing bodies 7 is three, and the utility models are registered in the windshield 3 at equal intervals of 120 °. 3. The spot laser device according to claim 1, wherein the pressing body 7 comprises a screw portion 9 and a knob portion 10.