JPH0419467Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention is a spot laser device, more specifically, mainly used in construction, to efficiently perform vertical marking work from floors to ceilings, etc. This invention relates to a spot laser device that can be suppressed well.

(Prior art) Conventionally, this type of spot laser device has
Something like the one shown in FIG. 6 exists.

That is, this spot laser device includes an aluminum tube 2a that integrally houses the laser tube 1.
The vertical adjustment is automatically made using the gyro 6, and
A windshield 3 supports the aluminum tube 2a on a tripod.
The laser tube 1 is installed inside the laser tube 1, and laser light is projected from both the upper and lower ends of the laser tube 1.

When in use, the device 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 background ink marked on the floor, etc., and the laser tube 1 is By projecting a laser beam more vertically upward onto a ceiling, etc., a mark is made at that spot and marked out on the ceiling, etc.

(Problems to be Solved by the Invention) However, in the conventional spot laser device described above, while the aluminum tube 2a that integrally houses the laser tube 1 is vertically adjusted automatically by the gyroscope 6, the ceiling Because the spot projected on the aluminum tube swings carelessly, it is difficult to determine the stop position of the spot, and even if you try to stop the aluminum tube 2a with your hand, when you release your hand, the aluminum tube 2a will move again. In any case, the marking operation must wait until the gyro 6 stops in order to start the marking process, and there is a problem in that it takes a lot of time to start marking out, which deteriorates the efficiency of the marking process. Ta.

The present invention was devised in view of the above problems, and its purpose is to improve the efficiency of vertical marking work, for example from the floor to the ceiling, by changing the deflection of the laser beam projected from the spot laser device. The point is that it suppresses the

(Means for solving the problems) The present invention was devised to achieve the above-mentioned purpose and solve the problems of the conventional technology. In a spot laser device comprising a laser tube 1 to be adjusted and a windshield 3 in which the laser tube 1 is placed inside with its lower end 4 protruding downward, the lower end 4 of the laser tube 1 can be inserted into the spot laser device. A stopper tube 7 having a stopper plate 10 with a hole 12 formed therein is fitted onto the outer peripheral surface of the lower end 8 of the windshield 3 so as to be able to move up and down, so that the lower end 4 of the laser tube 1 can be inserted into and removed from the hole 12. It's in the middle of the day.

(Function) Therefore, in the spot laser device characterized by the above configuration, even if the laser beam projected from the laser tube 1 swings while the laser tube 1 is vertically adjusted, the windshield 3 lower end 8
A laser tube 1 is fitted on the outer circumferential surface of the
By lifting the laser tube 1, the lower end 4 of the laser tube 1 is fitted into the hole 12 formed in the stopper plate 10 of the stopper tube 1. Therefore, the lower end 4 of the laser tube 1 is engaged with the stopper plate 10. This makes it possible to stop the laser tube 1 and suppress the deflection of the laser beam projected from the laser tube 1.

(Example) An example of the present invention will be described below with reference to the drawings.

In Fig. 1, reference numeral 1 indicates a helium-neon gas laser type laser tube of 1 mmW linear polarization type, and the laser tube 1 is integrally housed in an aluminum protection tube 2 with open ends at both the upper and lower ends. . Reference numeral 3 indicates a cylindrical aluminum windshield in which the protection tube 2 is housed with the substantially pointed lower end 4 of the laser tube 1 protruding downward, and the upper end of the windshield 3 has a polygonal shape. Aluminum head 5
will be established. Reference numeral 6 indicates a gyroscope provided in the head 5 and connected to the upper end of the protective tube 2, and the gyroscope 6 automatically vertically adjusts the protective tube 2.

Reference numeral 7 indicates a cylindrical transparent plastic stopper tube that is fitted into the outer peripheral surface of the lower end 8 of the windshield 3 so as to be able to rise and fall freely.
Two O-rings 9 are attached to the outer circumferential surface of the lower end 8 in order to bring it into close contact with the lower end 8. 10
2 shows a transparent plastic stopper plate fixed to the lower side of the stopper tube 7 with screws 11 and installed horizontally, and the center part of the stopper plate 10 has a A circular hole 12 into which the tip 4 of the laser tube 1 can be inserted is formed.

Reference numeral 13 indicates an aluminum tripod which is attached to the lower surface of the head 5 with a fixing screw 14 so as to be openable and closable, and an adjustment screw 15 is screwed into the lower end of each of the tripods 13 in the vertical direction. 16 is the windshield 3
There are three laser beam fixing knobs facing inward and screwed in at equal intervals approximately in the center of the figure. 17 is a switch attached to the upper surface of the head 5; 18
indicates a power cord that supplies current to the laser tube 1 and the gyro 6 through the switch 17.

19 is a disk-shaped cross-spot projector formed by integrally sandwiching a glass body 21 from above and below a net-like body 20 which is dyed black and entirely copper-plated, as shown in FIG. The cross-spot projector 19 is held inside by two holders 22.

Reference numeral 23 denotes a projector attachment part formed in the shape of a concave groove in the center of the upper surface of the head 5 in order to fit and install the cross-spot projector 19 therein. Let it pass.

The spot laser device of this embodiment has the above-mentioned configuration.Next, a case will be described in which this spot laser device 24 is used to draw a vertical mark on a ceiling from, for example, a ground mark marked on a floor surface.

First, switch 1 of the spot laser device 24 is turned on.
7 to project laser light from both the upper and lower ends of the laser tube 1.

At this time, the protection tube 2 containing the laser tube 1 is
Regardless of the inclination of the floor surface, the vertical adjustment is automatically made by rotating the gyro 6, so the laser beam projected from the lower end of the laser tube 1 travels straight vertically downward, projecting dot-shaped spots on the floor surface. Ru.

The spot laser device 24 itself is then set to align this spot with the background ink marked on the floor. As a result, the laser beam projected from the upper end of the laser tube 1 travels straight vertically upward, passes through the cross-spot projector 19, and is projected onto the ceiling as a set of substantially cross-shaped points, that is, as a cross-spot. .

At this time, since the gyroscope 6 vibrates to vertically adjust the protective tube 2, the laser beam projected from the laser tube 1, which is integrally housed within the protective tube 2, also oscillates and is therefore projected onto the ceiling. The cross spot is also swinging, but in order to make the cross spot still, first lift the stopper tube 7 fitted onto the outer peripheral surface of the lower end 8 of the windshield 3, as shown in FIG. As a result, the hole 12 of the stopper plate 10 of the stopper pipe 7
The substantially pointed lower end portion 4 of the laser tube 1 is inserted into the hole, and the lower end portion 4 of the laser tube 1 is lightly secured by the stopper plate 19.

When the vibration of the laser tube 1 has almost stopped, the stopper tube 7 is slowly lowered, and the adjustment screw 15 of the tripod 13 is finely adjusted to bring the cross spot to a complete standstill. Tighten the laser light fixing knob 16 from three sides to ensure that the spot is fixed to the background ink, and then attach the protective tube 2.
It fixes it.

As a result, the vertical marking work is completed by placing a cross-shaped mark on the ceiling along the cross spot projected on the ceiling as shown in Fig. 5. If a laser device is used, the gyroscope 6 will vertically adjust the protection tube 2, and even if the laser tube 1 is still swinging, it will gently move the stopper tube 7 fitted onto the outer circumferential surface of the lower end 8 of the windshield 3. The stopper plate 10 of the stopper pipe 7 can be removed by a simple lifting operation.
The substantially pointed lower end 4 of the laser tube 1 can be fitted into the circular hole 12 formed in the center of the laser tube 1 without any force and in a well-balanced manner.
This allows the cross-spot projected onto the ceiling to quickly come to a standstill by smoothly suppressing vibration.

Also, since the stopper tube 7 is transparent, the laser tube 1 can be inserted into the hole 12 of the stopper plate 10.
Since the fitting state of the lower end portion 4 of the stopper tube 7 can be directly confirmed, the operation of the stopper tube 7 can be made easier.

In the above embodiment, the laser beam projected from the upper end of the laser tube passes through the cross-spot projector and projects a cross-spot, which is a collection of approximately cross-shaped points, on the ceiling. The invention is not limited to this, and it may be possible to project a single spot.

Furthermore, the laser tube is constructed by fixing a stopper plate with holes with screws and horizontally disposing the stopper plate inside the laser tube, but the stopper plate may be formed integrally with the stopper tube, and the stopper plate of the present invention The tube is not limited to this, and may be a stopper plate with a hole formed in the center at the bottom of the cylindrical body, in short, a stopper plate with a hole into which the tip of the laser tube can be inserted. It is sufficient if you have the following. Further, the stopper tube of the above embodiment is transparent, which improves the operability of the stopper tube, but the stopper tube of the present invention is not limited to being transparent, nor is its material limited to plastic.

Furthermore, in the above embodiment, an O-ring is attached to the lower end of the windshield, whereby the stopper pipe is tightly and smoothly fitted onto the outer peripheral surface of the lower end so that it can be raised and lowered. However, this O-ring is not an essential requirement of the present invention.

In addition, the laser tube is not limited to a helium-neon gas laser, but may also be a solid-state laser, a semiconductor laser, etc., and the configuration of other parts of the spot laser device can be changed in design within the scope of the present invention. The use of the present invention is not limited to vertical marking for construction, but can be widely used for vertical measurement.

(Effect of the invention) As described above, in the spot laser device of the present invention, the stopper tube, which has a stopper plate having a hole into which the lower end of the laser tube can fit, is attached to the outer periphery of the lower end of the windshield. Since the laser tube is fitted into the surface so that it can be raised and lowered, even if the laser tube is vertically adjusted and the laser beam projected from the laser tube is swaying, the stopper can be adjusted by simply lifting the stopper tube. The lower end of the laser tube can be inserted into the hole in the plate.
Therefore, the vibration of the laser tube can be suitably stopped, and there is no need to wait for a long time until the laser tube stops, or to hold down the protective tube by hand unnecessarily, as in the past.
The laser beam spot can be brought to a standstill quickly to shorten the working time for vertical marking, and the work efficiency can therefore be greatly improved, which is a special effect.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention. FIG. 2 is a perspective view showing the stopper pipe. Third
The figure shows a cross-spot projector, where A is an exploded perspective view and B is a sectional view. FIG. 4 is a front view of the main part showing the stopper tube in a lifted state. FIG. 5 is a perspective view showing the state of use. FIG. 6 is a front view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Laser tube, 3... Windshield, 4... Lower end of laser tube, 7... Stopper tube, 8... Lower end of windshield, 10... Stopper plate, 12...
...hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1 Consists of a laser tube 1 that projects laser light from both upper and lower ends and is vertically adjusted, and a windshield 3 in which the laser tube 1 is housed inside with its lower end 4 protruding downward. In a spot laser device, a stopper tube 7 has a stopper plate 10 in which a hole 12 into which the lower end 4 of the laser tube 1 can fit is inserted into and removed from the hole 12. The windshield 3
A spot laser device characterized in that the spot laser device is fitted onto the outer peripheral surface of the lower end portion 8 of the device so as to be able to rise and fall freely. 2. The spot laser device according to claim 1, wherein the stopper tube 1 is made of transparent plastic.