JPS58178210A - Total circumference type level - Google Patents

Abstract

PURPOSE:To obtain the level characterized by the constitution, wherein a liquid flowing path is made endless, the bubble movement from a designed zero point is read by a measuring scale, which is provided on a semicircumference or semisphere, a long scale can be provided, 360 degree measurement can be performed, adjustment is not required in manufacturing, and a large quantity of the devices can be formed by plastics. CONSTITUTION:An outer measuring edge 3 and an inner measuring edge 4 of a bubble tube 2 of the level 1 are concentric true circles with a central part 5 as a center, and a groove circle 6 is formed by the edges. When liquid 8 is sealed with a bubble 7 being remained, the bubble movement and the liquid movement are directed in the same direction, since the groove 6 is endless. The water always forms a U tube principle device. In order to set the scale in the level, the total circumference memory can be marked at the time of manufacture, with an axial scale passing the central part 5 as zero, because the central point is clear. If the bubble tube 2 is made of soft vinyl tube and the like for the adjustment of sensitivity, the adjustment can be performed by compressing the path to make the path thin.

Description

[Detailed description of the invention] Ordinary spirit levels mainly use water and touch, and the degree of inclination is not beyond the measurable range of minute angles, and there has never been one that has been implemented. Because bubbles exist inside the bubble tube, the direction of bubble movement and the direction of water flow are contradictory, making it unstable.

In other words, if the bubbles are too large or too small, they may damage the water flow or cause them to succumb to the water flow, making it difficult to move quickly and stably, and each time when making settings, it must be adjusted on a reference stand and fixed with stones, etc. Bye.

In the present invention, a bubble tube is formed by enclosing liquid and bubbles in a groove formed by concentric circles or concentric spheres.This will be explained in detail with reference to the drawings.
and the inner edge 4 are concentric perfect circles formed by the center portion 5, forming a groove circle 6 thereof.

Now, liquid 8 is sealed in this, leaving bubbles 7. In the case of a normal spirit level, the R surface is sealed in an arc, so the flow of the liquid and the movement of the bubbles are mutually affected, as shown by the arrows. Since it is in the opposite direction,
If the bubbles are large, they will block the path, and if they are small, the movement of the bubbles will be slow due to water pressure, so it is not possible to manufacture bubble tubes with diameters below a certain level. In the present invention, since the groove 6 is endless, the movement of bubbles and the movement of liquid are in the same direction, and water always forms a U-shaped tube principle, so that thin tubes and fine bubbles can be produced quickly and stably. Therefore, the accuracy is also good. Also, in order to set this in the spirit level, since the center point is clear, starting from the axis scale that passes through the center 5 as ○, it is possible to set it productively in terms of design. There is no waste in adjusting and fixing, and the entire circumference scale can be written at the time of manufacture.Also, to adjust the sensitivity, if the bubble tube 2 is made of a soft vinyl tube, etc., adjustment can be made by compressing and narrowing the passage. Become. Further, if the entire circumference is not required, it can be made to have a semi-circumference and a bypass B, and a presser foot S can also be provided.

In Fig. 5, it is formed into a sphere, with an inner sphere 9 and an outer sphere 10 similar to the plane, held by four-point supports K1K2K3K4, and the gap groove 11 filled with liquid and air bubbles. Air bubbles can be measured in longitude and latitude, and are used as instruments such as ■Aerial transportation ■Line meters that require direction and slope, which are recent requirements. The ease of bubble tube installation is also the same as before.

As described above, since the present invention has an endless fluid passage, it is possible to apply a flat or three-dimensional long scale, and it is possible to measure 360 degrees without regard to directionality, and it is necessary to adjust the scale to the designed position during manufacturing. It can be used to form plastic in large quantities without the need for a straight line, the movement of air bubbles is stable, and fine tubes and grooves are used for good accuracy.It can be used as a drafting tool or as a straight scale for walls.In three-dimensional measurement, it can be used as a climbing instrument for automobiles. It has a wide range of uses, such as track instruments, heavy measuring instruments, and especially electronic bubble measuring devices. Furthermore, if the liquid passage can be adjusted from 0 to the maximum, the size of the bubbles and the stability of the liquid can be adjusted, which is convenient and is not currently seen on the market as a measuring tool of 180 degrees or more.

[Brief explanation of the drawing]

Fig. 1 is a front view of the present invention Fig. 2 is a partially cutaway side view Fig. 3 is a bypass provided to make the circumference more than half a circle Fig. 4 is a sectional view of a normal one Fig. 5 is a spherical spirit level FIG. 6 is a sectional view thereof, and FIG. 7 is a plan view of the structure assembled into a straight scale. 1. Level 2. Bubble tube 3 Outer edge 4. Inner edge 5.
Center 6. Groove circle 7 Bubbles 8 Liquid 9. Inner sphere 10
Outer sphere 11 Gap groove K1K2K3K9 Support R
R side applicant Shigeru Tatsumi Kura Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] The fluid flow path for the liquid is made of endless concentric circular grooves or concentric circular grooves, and the holding reference surface is a three-dimensional plane and a three-dimensional plane in two or three directions that intersect at right angles to each other. A full-circle level with a measuring scale that allows you to read the bubble movement from a point over a semicircle or more than a semicircle.