JPH0639287Y2 - Level adjuster - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leveler used for construction, installation of machinery, and other various works and works, and particularly to an adjusting device for the level.

[0002]

2. Description of the Related Art In a conventional leveler, a holder main body is attached to a beam type frame having an I-shaped cross section, and a holding tube containing a bubble tube is fixed to the holder main body.

Further, the adjustment of the attachment state of the bubble tube is performed by directly moving the holder body or directly screwing a tapping screw into the holder.

[0004]

In the above prior art, it is difficult to finely adjust the method of directly moving the holder body, and the adjustment method by screwing the tapping screw is repeated when the holder is made of synthetic resin. When readjusted, there was a problem that the screw hole gradually became larger and adjustment became impossible.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide an adjusting device for a leveler which can be easily fine-adjusted and cannot be adjusted no matter how many times it is adjusted. .

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is capable of advancing and retreating in which one end of a transparent bubble tube filled with liquid leaving bubbles is supported by one end of a holder body by a spring. Is supported so that it can swing freely with the fulcrum member of
The other end of the bubble tube is configured to be moved up and down by an eccentric cam rotatably attached to the holder body.

[0007]

Since the present invention has the above-mentioned structure, when the cam attached to the holder is rotated by a driver or the like, the bubble tube attached to the holder swings up and down about the fulcrum member, which causes bubbles to be generated. The position moves.

Therefore, high precision fine adjustment can be easily performed by finely adjusting the rotation angle of the cam.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, 1 is an I-beam type frame made of aluminum or the like, in which a window 2 is provided in the upper center part thereof, and a notch 3 following this window 2 is formed.

Reference numeral 4 denotes a holder body made of synthetic resin, which has an upward U-shape. Reference numeral 5 is a bubble tube made of a transparent synthetic resin, the inner surface of which has a large diameter at the center and a circular arc-shaped smaller diameter toward both ends. In addition, in the embodiment, the scale lines showing both ends of the bubble are 3
The books are provided on the left and right so that the horizontal plane and the inclination of 1 minute or 2 minutes from the horizontal plane can be measured.

The bubble tube 5 is housed in a holding tube 6 made of transparent synthetic resin, and is hermetically fixed by a lid 7. 4 to 6 show an example of the manufacturing process of the bubble tube 5.
It is a thing. In this case, the inner mold 2 is placed inside the outer mold 22 for molding.
3 and put a transparent composite in the space between the two molds 22 and 23.
The resin is injected to form the bubble tube 5. And the outer mold 2
When the inner mold 23 is pulled out from 2, the bubble tube 5 is removed as shown in FIG.
Comes with the inner mold 23. Next, as shown in Fig. 6 (II)
The inner mold 23 is pulled out from the bubble tube 5, but
The slit 25 is formed by the protrusion 24 of the inner mold 23.
Therefore, the bubble tube 5 is undercarried when the inner mold 23 is pulled out.
Since no excessive force is applied to the
The inside of the bubble tube that is generated when the die is pulled out
The shape of the side does not change. In addition, the inside of the holding tube 6
By integrally forming a ridge that engages with the slit 25 of the foam tube 5,
If you leave it, the bubble tube 5 will rotate and the slit 25 will be right above or next to it.
Can be positioned so that it does not come to an inconvenient position such as
It

Reference numeral 10 is a cylindrical fulcrum member fitted in a recess 11 inside one end of the main body 4 and is held by a spring 12. An arcuate projection 13 is formed on the outer end of the fulcrum member 10, and the projection 13 is formed in an arcuate recess 14 on the outer surface of the lid 7.
To hold the tube 6 so that it can move back and forth and swing.

The other end of the tube 6 is fitted into the opening 15 at the other end of the main body 4 so as to have a proper play, and the arcuate recess 16 at the end is brought into close contact with the outer circumference of the eccentric cam 17 in the main body 4.

The cam 17 is a cam accommodating chamber 18 in the main body 4.
It is housed inside and is fixed to the cam shaft 19. The cam shaft 19 is rotatably housed in a lateral hole provided in the main body 4 and is rotated by a driver or the like engaged with a groove 20 at the end of the cam shaft 19. However, the rotation method is free. The main body 4
As shown in FIG. 3, the holding tube 6 is divided into left and right parts and the holding tube 6 is housed, and then the holding tubes 6 are integrally connected by a set screw or the like.

Explaining the operation of the above embodiment, when the frame 1 is placed on a horizontal surface serving as a reference, the bubble 21 may be in the center of the bubble tube 5 as shown in FIG.
When the cam 17 is turned to the right as shown by the chain line in FIG. 2, the left is high. Therefore, when the cam 17 is rotated and eccentric downward, the bubble tube 5 moves downward to the right and the bubble 21 moves to the left. Therefore, the rotation of the cam 17 is stopped when the bubble 21 reaches the center position.

When the bubble 21 is shifted to the left, the reverse operation is performed. At the time of the above adjustment, the holding tube 6 of the bubble tube 5 shifts to the left or right to change the inclination angle, or the holding tube 6 is constantly pressed against the cam 17 by the spring, so that there is no backlash.

[0017]

[Effect] According to the present invention, since the mounting state of the bubble tube can be finely adjusted by the extremely simple operation of rotating the eccentric cam by the driver as described above, the accuracy of the leveler can be easily adjusted.

Therefore, the user can easily perform precise and accurate precision adjustment, and can easily perform special use such as tilt use by the user. Further, since the fulcrum member is held by the spring, the bubble tube does not rattle, and the accuracy can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is an enlarged vertical sectional view of the main part of the same as above.

3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is a vertical sectional view of a mold for forming a bubble tube.

FIG. 5 is a transverse sectional view taken along line AA of the above.

FIG. 6 is a vertical sectional view showing a die-cut state.

FIG. 7 is a cross-sectional view of a bubble tube.

[Explanation of symbols]

 4 retainer body 5 bubble tube 6 holding tube 10 fulcrum member 12 spring 17 eccentric cam 19 cam shaft 21 bubble

Claims (1)

[Scope of utility model registration request] 1. An end of a transparent bubble tube in which liquid is sealed while leaving bubbles therein is swingably supported by a fulcrum fulcrum member supported at one end of a holder body by a spring. The end is a leveling device which is moved up and down by an eccentric cam rotatably mounted on the holder body.