JP2011112624A - Level - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently manufacture a level, which is small, easy to handle and with high usefulness, by improving a fabrication yield. <P>SOLUTION: The level is configured to: bundle and align, in predetermined alignment and orientation, bubble tube mounting bases 3 for inclining each of bubble tube measuring parts 1 consisting of a bubble tube at a different inclination angle; insert the bubble tube mounting bases 3 into a case 5 having a shape for housing the bubble tube mounting bases 3 bundled and aligned in the predetermined alignment and orientation; form abutment parts 6, abutting each other, on each of the bubble tube mounting bases 3; and form concavo-convex engagement parts 7 for making the concavo-convex engagement each other with each of abutment parts 6. Thus, if in the predetermined alignment and orientation, each of the bubble tube mounting bases 3 is allowed to be bundled, aligned and housed in the case 5 through the concavo-convex engagement with the concavo-convex engagement part 7 abutted; while, if not in the predetermined alignment and orientation, each of the bubble tube mounting bases 3 abutted is not allowed to make the concavo-convex engagement or to be housed in the case 5 even if the concavo-convex engagement is allowed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a spirit level.

  There is a level that includes a plurality of bubble tube measuring units each composed of a bubble tube enclosing a liquid and bubbles, and is attached to a measured object such as a pipe line to visually measure the inclination angle of the measured object. This level is configured so that a number of bubble tube measuring portions that are inclined at a predetermined predetermined tilt angle are arranged in a row in the longitudinal direction of the level, so that the tilt angle of the object to be measured can be visually confirmed. Is.

  This level can be manufactured by simply attaching a single bubble tube mounting base having a plurality of bubble tube measuring portions inclined at a required inclination angle to a rectangular case having a window hole for visually recognizing the bubble tube. In addition, by displaying the inclination corresponding to each bubble tube measurement unit in this case, this bubble is brought into contact with the measurement surface of the object to be measured so that the bubble in the bubble tube measurement unit is positioned at the center. Since the measurement of the inclination can be performed very simply by visually recognizing the bubble tube measurement section and reading the display value of the inclination of the corresponding bubble tube measurement section, it can be used easily.

  On the other hand, this conventional level is elongated because several types of bubble tube accommodating portions having different inclination angles are provided in a straight line, which may be difficult to handle.

  On the other hand, a plurality of types of bubble tube mounting bases in which the bubble tube measuring unit is inclined at different inclination angles are bundled, for example, a triangular bundle shape to shorten the size and reduce the size. By rotating and sequentially changing the three sides of the triangular prism and contacting the surface to be measured, the inclination of the surface to be measured is visually measured by reading the indication of the degree of inclination of the bubble tube measuring unit where the bubble is at the center position. There is a spirit level.

  This shortened and rotating level is manufactured by arranging a plurality of types of bubble tube mounting bases in order so that the inclination of the inclination angle of the bubble tube measuring unit is in a predetermined order and accommodated in the case. However, at this time, the plurality of types of bubble tube mounting bases must be sorted and arranged in a predetermined order for each type, but they are arranged in a predetermined order and orientation. Although it is a structure that can be assembled in spite of the fact that it is not assembled, manufacturing errors often occur during manufacturing, and thus the manufacturing yield tends to be low. Therefore, a plurality of types of bubble tube mounting bases are arranged in a predetermined sequence and orientation. Thus, the work of correctly assembling requires a very troublesome work management procedure and has a problem of low manufacturing efficiency.

  The present invention is capable of reliably arranging a large number of bubble tube measuring portions in a predetermined arrangement and orientation, improving the production yield, facilitating production, small size, easy handling, and excellent practicality. It aims at producing efficiently.

  The gist of the present invention will be described with reference to the accompanying drawings.

  In a spirit level in which a plurality of bubble tube measuring units 1 each composed of a bubble tube filled with liquid and bubbles are inclined at different inclination angles, and the inclination angle of the object to be measured 2 can be confirmed by the bubble tube measuring unit 1, The bubble tube mounting base 3 provided with the bubble tube measuring unit 1 is bundled in a predetermined arrangement and orientation so that two bubble tube mounting bases 3 are adjacent to one bubble tube mounting base 3 and arranged in advance. The bubble tube mounting base 3 bundled and arranged in a predetermined arrangement and orientation is inserted and fixed in a case 5 provided with a viewing window portion 4 for visually recognizing the bubble tube measuring portion 1 provided on the bubble tube mounting base 3. The bubble tube mounting base 3 is configured so that the shape of the case 5 is bundled side by side in a predetermined arrangement and orientation, and is set in a shape that can be accommodated in the case 5. The adjacent bubble tube mounting The abutting portions 6 that abut each of the sleeves 3 are provided, one of the abutting portions 6 that abuts each other is provided with an engaging concave portion 14, and the other abutting portion 6 is provided with an engaging convex portion 15 adjacent to each other. The contact portions 6 of the bubble tube mounting base 3 are provided with an uneven engagement portion 7 in which the engagement concave portion 14 and the engagement convex portion 15 engage with each other at the engagement concave portion 14 and the engagement convex portion 15. In the arrangement and orientation, the adjacent bubble tube mounting base 3 can be unevenly engaged and bundled in parallel and can be accommodated in the case 5, and if it is not a predetermined arrangement and orientation, the adjacent bubble tube mounting base 3 is uneven. The spirit level is characterized in that it cannot be engaged or cannot be accommodated in the case 5 even if it is unevenly engaged.

  The bubble tube mounting base 3 has a rod shape, and the contact portions 6 extending in the longitudinal direction of the bubble tube mounting base 3 are provided at two positions on the side surface of the rod-shaped bubble tube mounting base 3, respectively. The contact portions 6 of the bubble tube mounting base 3 adjacent to the contact portions 6 in a predetermined arrangement and orientation are brought into contact with each other, and the uneven engagement portions 7 provided on the contact portions 6 are engaged with the uneven portions. By doing so, the plurality of bubble tube mounting bases 3 can be bundled and arranged side by side in a predetermined arrangement and orientation.

  Moreover, when the said uneven | corrugated engaging part 7 provided in each of the said contact part 6 bundles the said bubble pipe attachment base 3 in the predetermined arrangement | sequence and orientation, adjacent said bubble pipe attachment bases 3 are adjacent. Two engagement recesses 14 are provided in the contact portion 6 of one of the bubble tube mounting bases 3 that are in contact with each other, and the one contact portion 6 is provided in the contact portion 6 of the other bubble tube mounting base 3. 3. The level according to claim 1, wherein the same number of engaging convex portions 15 that engage with the concave and convex portions are provided.

  Further, the engagement recesses 14 and the engagement projections 15 provided in the concave-convex engagement portion 7 are bundled in a predetermined arrangement and orientation, and are arranged in different positions for each combination of the adjacent bubble tube mounting bases 3. Alternatively, the level is set so that the plurality of bubble tube mounting bases 3 can be bundled and arranged in a predetermined arrangement and orientation, and the level is set according to claim 3.

  In addition, a plurality of bubble tube measuring units 1 each composed of a bubble tube enclosing a liquid and bubbles can be provided and inclined at different inclination angles, and the bubble tube measuring unit 1 can be visually confirmed to confirm the inclination angle of the object 2 to be measured. In the level, an engagement fixing body 8 for fixing the bubble tube mounting base 3 on which the bubble tube measuring unit 1 is provided in a predetermined arrangement and orientation is provided, and a plurality of the bubble tube attachments are provided around the engagement fixing body 8. The base 3 is bundled in a predetermined arrangement and orientation, and the bubble tube mounting base 3 bundled in parallel with the predetermined arrangement and orientation is used. Are inserted and fixed in a case 5 provided with a viewing window portion 4 that can visually recognize each of the above-mentioned engagement fixing bodies 8 and the respective bubble tube attachments disposed around the engagement fixing bodies 8. The base 3 is provided with contact portions 6 that contact each other. This contact portion 6 is provided with an engagement recess 14 or an engagement projection 15, and an uneven engagement portion 7 for engaging the engagement fixing body 8 and the bubble tube mounting base 3 with each other is provided. In the predetermined arrangement or orientation of the engaging portion 7, the locking and fixing portion 8 and the plurality of bubble tube mounting bases 3 are engaged with each other, and can be bundled in parallel to be accommodated in the case 5, and predetermined. If it is not arranged in an arrangement and orientation, the locking and fixing portion 8 and the bubble tube mounting base 3 cannot be engaged with each other, or they cannot be accommodated in the case 5 even if they are engaged with each other. It relates to the spirit level.

  Further, the bubble tube mounting base 3 is constituted by a pair of divided halves 9a and 9b which can be divided into two in the longitudinal direction and can be concavo-convexly fitted to each other, and the bubble tube measurement is provided on at least one of the pair of divided halves 9a and 9b. 6. A bubble tube accommodating portion 10 is provided, which can accommodate the portion 1 by being inclined at different inclination angles with respect to the longitudinal direction of the bubble tube mounting base 3, respectively. This relates to the spirit level described in.

  In addition, a fitting recess 12 or a fitting projection 13 that fits into each of the pair of divided halves 9a and 9b is provided at different positions or shapes for each of the pair of divided halves 9a and 9b. 7. The spirit level according to claim 6, wherein each of the paired divided halves 9a and 9b cannot be fitted into the other divided halves 9a and 9b. Is.

  Since the present invention is configured as described above, the arrangement and the predetermined arrangement are simply performed by simply engaging the respective abutting portions of the bubble tube measuring portions provided with a plurality of bubble tubes at different inclination angles. It can be bundled in parallel and accommodated in the case, and if it is not a predetermined arrangement and orientation, it can immediately determine the built-in abnormality, or it can be determined that the abnormality cannot be accommodated in the case, improving the manufacturing yield, Efficient and simple manufacturing is possible, and therefore it can be manufactured at low cost, and it is a level that is excellent in practicality and workability while being small and easy to handle while having many bubble tubes.

  Further, in the inventions of claims 2 to 4, it is possible to efficiently bundle and arrange them quickly in a predetermined arrangement and orientation, and to efficiently detect an incorporation abnormality, and to make production efficiency and production quality. Can be improved.

  In the invention according to claim 6, since the bubble tube measuring part can be inclined at different inclination angles only by accommodating the bubble tube measuring part in the bubble tube mounting base, assembly and manufacturing are facilitated.

  Further, in the invention according to claim 7, in the combination other than the pair of bubble tube mounting bases, the incorporation abnormality of the divided half can be reliably detected, and the manufacturing level and the manufacturing quality are further improved.

1 is a perspective view of a level according to Example 1. FIG. 1 is an exploded perspective view of a spirit level according to Embodiment 1. FIG. It is a perspective view of the bubble tube mounting base of the level according to the first embodiment. It is a disassembled perspective view of the bubble tube attachment base of the level according to the first embodiment. It is a side view which shows the engaging part of each bubble tube attachment base of the level which concerns on Example 1. FIG. It is a side view of the state which separated the bubble pipe attachment base of the level which concerns on Example 1. FIG. It is a side view of the state which bundled the bubble pipe attachment base of the level which concerns on Example 1, and was arranged in parallel. It is sectional drawing of the bubble tube accommodating part of the bubble tube attachment base of the level which concerns on Example 1. FIG. It is sectional drawing of the fitting part of the bubble pipe attachment base of the level which concerns on Example 1. FIG. It is an exploded view which shows the fitting part of the division | segmentation half body of the level device which concerns on Example 1. FIG. It is a perspective view of the bubble tube attachment base of the level according to the second embodiment. It is a side view of the state which isolate | separated each bubble tube attachment base of the level which concerns on Example 2. FIG. It is a side view of the state which bundled each bubble pipe attachment base of the level which concerns on Example 2, and was arranged in parallel.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  For example, the bubble tube attachment base 3 provided with the bubble tube measurement unit 1 is adjacent to the bubble tube attachment base 3 provided with the bubble tube measurement unit 1, and the two adjacent bubble tube attachment bases are provided. When the three abutting portions 6 abut on each other so as to have a predetermined arrangement and orientation, the engaging concave portions 14 and the engaging convex portions 15 of the concave and convex engaging portions 7 provided on the respective abutting portions 6 are provided. Will be engaged in a concave-convex manner, for example, it can be bundled in a ring or columnar shape, and the bubble tube measuring portion 1 provided on the bubble tube mounting base 3 can be inclined at different angles, respectively. When the bubble tube mounting base 3 bundled in this way is inserted and fixed in a case 5 provided with a visual window hole 4 through which the bubble tube measurement unit 1 can be visually confirmed, a small size is provided while including a large number of bubble tube measurement units 1. It will be easy to handle. Further, if the arrangement order is not predetermined, for example, if the arrangement order is changed or the bubble tube mounting base 3 is reversed, the concave and convex engaging portions 7 provided on the contact portion 6 of the bubble tube mounting base 3 are provided. Are not engaged with each other and the plurality of bubble tube mounting bases 3 are displaced and cannot be inserted into the case 5, and the bubble tube mounting bases 3 are bundled in combination in a predetermined arrangement and orientation. It is possible to easily identify and remove objects and reassemble them.

  Accordingly, the bubble tube mounting base 3 accommodating a large number of bubble tube measuring units 1 can be assembled in a predetermined arrangement and orientation, and manufacturing defects can be reduced as much as possible, resulting in an increase in manufacturing yield. It is possible to manufacture efficiently and inexpensively, and it is a level that is excellent in practicality and workability because it is small and easy to handle while having many bubble tubes.

  Further, for example, the bubble tube mounting bases 3 having a predetermined arrangement and orientation are made to be adjacent to each other with a predetermined arrangement and orientation in the longitudinal direction of each of the bubble tube mounting bases 3. When the abutting portions 6 of the bubble tube mounting base 3 are brought into contact with each other, and the two engaging concave portions 14 and the engaging convex portions 15 provided in the respective abutting portions 6 of the bubble tube mounting base 3 are engaged with each other. The abutting portions 6 of the other bubble tube mounting bases 3 are in contact with each other in a predetermined arrangement and orientation with each of the abutting portions 6 provided at two positions on the side surface of the bubble tube mounting base 3. Thus, a plurality of the bubble tube mounting bases 3 can be easily bundled and arranged in parallel with each other in the arrangement and orientation. On the other hand, for example, even if the bubble tube mounting bases 3 that are not in a predetermined arrangement and orientation are combined to bring the respective contact portions 6 into contact with each other, they cannot engage with each other and do not enter the case. Since it is possible to exclude combinations of the bubble tube mounting bases 3 that are not in a predetermined arrangement and orientation, it is possible to immediately determine that the combination is not in a predetermined arrangement and orientation, and it is not a predetermined arrangement and orientation before being incorporated into the case. It becomes possible to quickly detect an abnormality in the combination, and therefore, it is possible to improve manufacturing efficiency and manufacturing quality.

  Further, the bubble tube measuring part 1 is accommodated in the bubble tube accommodating part 10 provided in at least one of the divided halves 9a and 9b obtained by dividing the bubble tube attachment base 3 into two in the longitudinal direction of the bubble tube attachment base 3. When one of the divided halves 9a and 9b and the other divided halves 9a and 9b are concavo-convexly fitted, the bubble tube measuring unit 1 can be accommodated at different inclination angles in the bubble tube mounting base 3, respectively. Further, in this state, a plurality of bubble tube mounting bases 3 are bundled and arranged side by side. For example, when the operator presses and bundles with the fingers of the hand, the divided halves 9a and 9b constituting the bubble tube mounting base 3 are connected to each other. It is possible to hold the bundled state by being pressed and locked to each other. Therefore, by inserting the bubble tube mounting base 3 bundled in this way into the case 5, the bundled bubble tube mounting base 3 is inserted into the case. Assembly work housed in 5 It will be easily carried out.

  Further, when the divided halves 9a and 9b are engaged with each other in a concavo-convex manner, the pair of divided halves 9a and 9b that engage with each other in a concavo-convex manner are fitted into the concave and convex portions 12 and the fittings that engage with each other in a specific position and shape. Only the mating convex portion 13 is fitted, and the fitting concave portions 12 or the fitting convex portions 13 of the other divided halves 9a and 9b that are not paired with each other have different positions or shapes, so that the concave and convex portions cannot be fitted to each other. , Before bundling a plurality of bubble tube mounting bases 3 in parallel, it is possible to reliably detect an incorporation error when the divided halves 9a and 9b are combined to form the bubble tube mounting base 3, and errors in work are possible. As a result, the assembly work can be reliably performed with a reduction in the level, and the level of production with higher production quality and higher production quality can be obtained.

  A first embodiment of the present invention will be described with reference to FIGS.

  The first embodiment is a level 20 that is used for visually measuring the gradient and the angle of inclination of an object to be measured 2 such as a pipe line in piping work.

  The level 20 accommodates a plurality of bubble tube measuring portions 1 each composed of a bubble tube filled with liquid and bubbles in a rod-shaped bubble tube mounting base 3 that is inclined at different inclination angles. A plurality of bubble tubes are arranged side by side in a polygonal column shape, so that the plurality of bubble tubes are provided in a small size for easy handling. Three types of bubbles arranged at different inclination angles, that is, three bubble tube mounting bases 3 are accommodated, and three bubble tube measuring sections 1 are bundled in a triangular prism shape and arranged in parallel. By accommodating the three bubble tube mounting bases 3 in the case 5, it is possible to perform visual measurement at six different inclination angles.

  In detail, this level 20 is arranged on three types (three) of rod-shaped bubble tube mounting bases 3 in which two bubble tube measuring sections 1 are inclined at different inclination angles. A bubble tube mounting base 3 having a predetermined arrangement is adjacent to each of the bases 3 in a predetermined direction, and two bubble tube mounting bases 3 are adjacent to both sides of one bubble tube mounting base 3. Thus, the three bubble tube mounting bases 3 are bundled in a triangular prism and arranged in parallel, and the bubble tube mounting base 3 bundled and arranged in a predetermined arrangement and orientation is provided in the bubble tube mounting base 3. The bubble tube measuring unit 1 is inclined and fixed at different inclination angles by inserting the measuring unit 1 into a case 5 provided with a viewing window 4 for visually recognizing the measuring unit 1 and sealing both ends of the case 5 with lids 21. It is configured.

  The case 5 has a triangular prism shape that substantially matches the bundle shape in which the shape of the case 5 is bundled and arranged in parallel with a predetermined arrangement and orientation, and the inside of the case 5 is substantially the same as the outer shape of the triangular prism bundle shape. In this configuration, the corner edges of the three side surfaces of the outer surface of the case 5 are provided in parallel to each other, and the reference plane is formed by the adjacent corner edges. Therefore, in a state where the bubble tube mounting bases 3 bundled in a predetermined arrangement and orientation are accommodated in the case 5, each of the three side surfaces of the case 5 and the three bubble tube mounting bases 3 accommodated in the case 5 are accommodated. Each case 5 has a hollow cylindrical configuration parallel to the longitudinal direction, and the bubble tube mounting bases 3 are bundled and inserted in parallel with the case 5 in a predetermined arrangement and orientation. By covering the lid 21, the plurality of bubble tube mounting bases 3 arranged in a bundle are fixed.

  Further, a viewing window portion 4 for visually recognizing each of the bubble tube measuring portions 1 provided on the bubble tube mounting base 3 is provided on the corner edge of the side surface of the case 5.

  The bubble tube mounting base 3 is provided with two contact portions 6 adjacent to each other so that the bubble tube mounting base 3 itself is sandwiched between side surfaces of the bubble tube mounting base 3, Each of the contact portions 6 is provided in a strip shape in the longitudinal direction of the bubble tube mounting base 3 so that the bubble tube mounting bases 3 can be bundled in a stable state.

  Furthermore, the engaging concave portion 14 or the engaging convex portion 15 is provided in the central portion of the abutting portion 6, and the concave and convex engaging portion 7 in which the adjacent bubble tube mounting bases 3 are concavely and convexly engaged with each other is provided.

  Specifically, the concave-convex engaging portion 7 is one bubble tube mounting base in which adjacent bubble tube mounting bases 3 come into contact with each other when the bubble tube mounting bases 3 are bundled and arranged in a predetermined arrangement and orientation. The engaging recesses 14 are provided at two locations on the abutting portion 6 of the three, and the engaging projections that engage with the abutting portion 6 of the one of the bubble tube mounting bases 3 on the other abutting portion 6 of the other bubble tube mounting base 3. The portions 15 are similarly provided at two locations, and the engagement convex portions and the engagement concave portions are arranged at different positions or intervals for each combination of the adjacent bubble tube mounting bases 3 when bundled in a predetermined arrangement and orientation. By setting, the three bubble tube mounting bases 3 can be bundled and arranged in parallel when a predetermined arrangement and orientation are obtained.

  Accordingly, when the adjacent bubble tube mounting bases 3 are concavo-convexly engaged with each other in a predetermined arrangement and orientation, the three bundled bubble tube mounting bases 3 can be accommodated in the case 5 and arranged in a predetermined arrangement and orientation. The bubble tube mounting base 3 is not engaged with the concave or convex portion, or even when the concave and convex portions are engaged, for example, the end portions of the three bubble tube mounting bases 3 are not aligned and cannot be accommodated in the case 5, resulting in an abnormal assembly. Can be immediately identified.

  In addition, each of the engagement concave portion 14 and the engagement convex portion 15 provided in the contact portion 6 of the bubble tube mounting base 3 has a narrow groove or a thin plate shape in a direction perpendicular to the longitudinal direction of the bubble tube mounting base 3. And is engaged when bundling a plurality of bubble tube mounting bases 3 in a direction perpendicular to the longitudinal direction of the bubble tube mounting base 3 and is locked with respect to the longitudinal direction of the bubble tube mounting base 3. It is configured to be able to.

  More specifically, the bubble tube mounting base 3 is constituted by a pair of divided halves 9a and 9b which can be divided into two in the longitudinal direction and can be concavo-convexly fitted to each other, and abut against each of the pair of divided halves 9a and 9b. A fitting portion 22 having a matching contact surface is provided, and four fitting recesses 12 and fitting projections 13 that are fitted to each other are provided at four locations, and the four pairs are fitted. The concave portion 12 and the fitting convex portion 13 are provided at different positions or shapes for each pair of divided halves 9a and 9b, and each of the pair of divided halves 9a and 9b and the other divided halves 9a and 9b Is configured so that it cannot be unevenly fitted.

  Therefore, when the split halves 9a and 9b that are not paired with each other are combined, the concave / convex fitting cannot be performed, or even if the concave / convex fitting is performed, misalignment occurs, and it can be immediately determined that the split halves 9a and 9b are not the correct combination. Thus, it is possible to avoid a situation in which an abnormality is noticed after the post-production process.

  In addition, the bubble tube storage portions 10 for storing the bubble tube measuring portions 1 at different predetermined inclination angles with respect to the longitudinal direction of the bubble tube mounting base 3 are provided at two locations in each of the pair of divided halves 9a and 9b. The bubble tube measuring unit 1 is housed in each of the bubble tube housing portions 10 provided in one of the split halves 9a and 9b, and the other split halves 9a and 9b are Are attached to the split halves 9a and 9b, and the fitting concave portion 12 and the fitting convex portion 13 are fitted together to form the bubble tube mounting base 3, and the longitudinal direction of the bubble tube mounting base 3 is The bubble tube measuring unit 1 can be fixed in a state where it is inclined at a predetermined inclination angle.

  In addition, when the notched portion 24 is provided in the bubble tube housing portion 10 in each of the pair of divided halves 9a and 9b and the pair of divided halves 9a and 9b are fitted to form the bubble tube mounting base 3, When a window hole 11 that can visually recognize the bubble tube measuring portion 1 provided in the tube housing portion 10 is formed, and the bubble tube mounting bases 3 are bundled and arranged side by side in a predetermined arrangement and orientation, The window hole 11 provided in the base 3 and the visual window hole 4 provided in the case 5 communicate with each other so that the bubble tube measuring unit 1 can be visually recognized.

  Furthermore, one contact portion 6 extending in the longitudinal direction of each of the divided halves 9a and 9b is provided on the outer peripheral edge in the longitudinal direction of each of the divided halves 9a and 9b. When the bubble tube mounting base 3 is formed by abutting 9b, the contact portion 6 so as to sandwich the bubble tube housing portion 10 on the outer peripheral surface on the bottom side of the bubble tube housing portion 10 provided on the bubble tube mounting base 3 Are formed adjacent to each other at two locations.

  Furthermore, the concave and convex engaging portion 7 formed by the engaging concave portion 14 and the engaging convex portion 15 is provided in the abutting portion 6 so that the pair of divided halves 9a and 9b are fitted to each other so that the bubble tube The mounting base 3 is formed, and the abutting portions 6 of the bubble tube mounting bases 3 adjacent to the abutting portion 6 in a predetermined arrangement and orientation are brought into contact with each other, and the concave and convex engagement is carried out to obtain a predetermined arrangement and orientation. A plurality of bubble tube mounting bases 3 are configured to be bundled and arranged side by side.

  Further, on the side end surfaces of the divided halves 9a and 9b, a pair of tally 23 is provided when the pair of divided halves 9a and 9b are fitted, and the tally 23 is shaped differently for each bubble tube mounting base 3. It is a configuration. Therefore, when combining the divided halves 9a and 9b, it is possible to quickly perform assembly work by visually checking the tally 23 provided on the side end surfaces of the divided halves 9a and 9b, and to divide different combinations. The half bodies 9a and 9b can be quickly identified and removed, and reassembled.

  It should be noted that a phosphorescent material is attached to the bottom of the bubble tube storage unit 10 that stores the bubble tube measurement unit 1 in either of the pair of divided halves 9a and 9b so as to improve the visibility of the bubble tube measurement unit 1. Configured.

  In the first embodiment configured as described above, a pair of divided halves 9a and 9b that coincide with the tally 23 are used as a pair, and the bubble tube measuring unit 1 is accommodated in one of the pair of divided halves 9a and 9b. By fitting the divided halves 9a and 9b, the bubble tube measuring portion 1 can be easily accommodated in the bubble tube mounting base 3, and the contact portions 6 of the three types of bubble tube mounting bases 3 are connected to each other. Are brought into contact with each other in a predetermined arrangement and orientation, and when the concave and convex engagements 7 provided in the contact portion 6 are engaged with each other, the three types of bubble tube mounting bases 3 can be easily bundled and arranged in parallel in a triangular prism shape, When the bubble tube mounting base 3 bundled in this manner is inserted into the case 5 and both ends of the case 5 are fitted and fixed with the lids 21, the bubble tube measuring unit 1 is provided and the end tube is small in size. The level 20 is easy to handle.

  Therefore, in the first embodiment, the six bubble tube measuring units 1 are accommodated in three pairs of divided halves 9a and 9b to assemble three types of bubble tube mounting bases 3 and then the three types of bubble tube mounting bases 3 Can be easily assembled into a predetermined arrangement and orientation.

  More specifically, the split half 9a and 9b are provided with a tally 23, and the fitting concave portion 12 and the fitting convex portion 13 are provided at different positions for each of the pair of split half bodies 9a and 9b. -Whether the combination when assembling the bubble tube mounting base 3 by combining 9b can be immediately determined. Furthermore, engaging recesses 14 that engage with each other at different positions on the outer side edge of each of the divided halves 9a and 9b that make a pair of adjacent divided halves 9a and 9b in a predetermined arrangement and orientation, and By providing the engaging convex portion 15, it is possible to immediately determine whether the arrangement and orientation of the bubble tube mounting base 3 are aligned correctly when bundled. Furthermore, the shape of the inner side of the case 5 is matched with the shape of the bubble tube mounting base 3 that is bundled and arranged side by side, so that the correctness of the final combination can be immediately determined. Even if, for example, no special inspection process is provided for each process, correctness of the work can be automatically performed during the assembly work.

  As described above, in the first embodiment, it is possible to easily perform pass / fail judgment at each assembly stage when assembling the level, and to easily perform correction at the time of an assembly error, so that the yield can be increased and the manufacturing can be efficiently performed. Thus, it becomes a low-priced level with excellent practicality and workability that is easy to handle and small in size while having a large number of bubble tubes.

  The number of the bubble tube measuring parts 1 accommodated in one bubble tube mounting base 3 and the number of the bubble tube mounting bases 3 arranged in a bundle may be other numbers, for example, accommodated in one bubble tube mounting base 3. Even if the number of bubble tube measuring parts 1 is increased to 3, 4, etc., or the number of bubble tube mounting bases 3 is increased to 4, 5, 6, etc., the shape does not remarkably increase, and various inclination angles can be inclined. The level 15 can be made small and easy to handle with visual confirmation.

  A second embodiment of the present invention will be described with reference to FIGS.

  The second embodiment is also a level 15 used for visual confirmation of the gradient and the angle of inclination of the object 2 to be measured, such as a pipe line, for example, in piping work as in the first embodiment. The plurality of bubble tube measuring units 1 each composed of a bubble tube enclosing the liquid and bubbles in Example 1 are accommodated in a bubble tube mounting base 3 inclined at different inclination angles, and the engagement fixing body 8 is As a center, a plurality of bubble tube mounting bases 3 are bundled in parallel on the engagement fixing body 8.

  The level 20 of the second embodiment is provided with a triangular prism-shaped engagement fixing body 8 that fixes the bubble tube mounting base 3 in a predetermined arrangement and orientation as the center, and three bubbles centered on the engagement fixing body 8. The tube mounting base 3 is bundled and arranged in a predetermined arrangement and orientation, and the bubble tube measuring unit 1 provided on the bubble tube mounting base 3 is arranged in a bundle and juxtaposed in a predetermined arrangement and orientation. Each is configured to be inserted and fixed in a case 5 provided with a visual recognition window 4 that can be visually recognized.

  In addition, the engagement fixing body 8 and the bubble tube mounting base 3 disposed around the engagement fixing body 8 are brought into contact with the engagement fixing body 8 and the bubble tube mounting base 3. The engaging recesses 14 or the engaging protrusions 15 are provided on the respective abutting portions 6, and the concave and convex engaging portions 7 for engaging the engaging fixing body 8 and the bubble tube mounting base 3 with the concave and convex portions are provided. The concave and convex engaging portions 7 can be formed in a predetermined arrangement or orientation, and can be accommodated in the case 5 by arranging the engaging and fixing portions 8 and the respective bubble tube mounting bases 3 in a concave and convex manner. If it is not arranged in a predetermined arrangement and orientation, the locking and fixing portion 8 and the bubble tube mounting base 3 cannot be engaged with each other, or they cannot be accommodated in the case 5 even if they are engaged with each other.

  Also, a contact portion 6 extending in the longitudinal direction of the bubble tube mounting base 3 is provided on the side surface of the rod-shaped bubble tube mounting base 3, and the contact portion 6 of the bubble tube mounting base 3 is connected to the engagement fixing body 8. The contact portion 6 is brought into contact with a predetermined arrangement and orientation, and the engagement fixing body 8 and the concave-convex engagement portion 7 of the bubble tube mounting base 3 are engaged with each other in a concave-convex manner. The plurality of bubble tube mounting bases 3 can be bundled and arranged side by side.

  Further, when the concave and convex engaging portions 7 provided on the respective abutting portions 6 are bundled and juxtaposed in a predetermined arrangement and orientation, the adjacent bubble tube mounting bases 3 come into contact with each other. Two engaging recesses 14 are provided in the abutting portion 6 of one bubble tube mounting base 3, and the engaging convex portion that engages with one abutting portion 6 in the abutting portion 6 of the other bubble tube mounting base 3. The same number of 15 is provided.

  Furthermore, the engaging convex portions and engaging concave portions provided in the concave-convex engaging portion 7 are arranged in parallel in a predetermined arrangement and orientation, and are set at different positions or intervals for each combination of the adjacent bubble tube mounting bases 3. The plurality of bubble tube mounting bases 3 are configured to be bundled and arranged in a predetermined arrangement and orientation.

  In the second embodiment, in addition to the features of the first embodiment, the plurality of bubble tube mounting bases 3 are bundled and arranged in parallel by engaging the locking and fixing portion 8 with the plurality of bubble tube mounting bases 3. When the number of the bubble tube mounting bases 3 is to be accommodated in the case 5, it is possible to easily perform the work for bundling them in parallel.

  Note that the present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Bubble tube measuring part 2 Object to be measured 3 Bubble tube mounting base 4 Visual recognition window part 5 Case 6 Contact part 7 Concavity and convexity engaging part 8 Engagement fixing body 9a Split half body 9b Split half body
10 Bubble tube housing
11 Window hole
12 Mating recess
13 Mating protrusion
14 Engaging recess
15 Engaging projection

Claims (7)

  A bubble level measuring unit comprising a plurality of bubble tube measuring portions each including a bubble tube enclosing a liquid and bubbles inclined at different inclination angles, wherein the bubble tube measuring portion can confirm the inclination angle of the object to be measured. The bubble tube mounting base on which the measurement unit is provided is bundled in a predetermined arrangement and orientation so that two bubble tube mounting bases are adjacent to one bubble tube mounting base, and bundled in this predetermined arrangement and orientation. The bubble tube mounting bases arranged side by side are configured to be inserted and fixed in a case provided with a viewing window portion that can visually recognize the bubble tube measuring portion provided on the bubble tube mounting base, and the shape of the case is previously set. The bubble tube mounting bases bundled in a predetermined arrangement and orientation are set in a shape that can be accommodated in the case, and abutting portions that respectively contact the two adjacent bubble tube mounting bases to the bubble tube mounting base are provided. Establishment An engagement concave portion is provided in one of the contact portions that contact each other, and an engagement convex portion is provided in the other contact portion. A concave and convex engaging portion that engages with each other by a convex portion is provided, and the concave and convex engaging portions can be bundled in parallel with the bubble tube mounting base adjacent to each other in a predetermined arrangement and orientation. The adjacent bubble tube mounting base cannot be engaged with the concave / convex engagement unless it is in a predetermined arrangement and orientation, or it cannot be accommodated in the case even with the concave / convex engagement. vessel.   The bubble tube mounting base is shaped like a rod, and the contact portions extending in the longitudinal direction of the bubble tube mounting base are provided at two locations on the side surface of the rod-shaped bubble tube mounting base, The abutment portions of the bubble tube mounting bases adjacent to each other in a predetermined arrangement and orientation are brought into contact with each other, and a plurality of projections in a predetermined arrangement and orientation are obtained by engaging the uneven engagement portions provided in the contact portions. 2. The spirit level according to claim 1, wherein the bubble tube mounting bases are configured to be bundled and arranged side by side.   The bubble tube mounting bases that are adjacent to each other when the bubble tube mounting bases are bundled and arranged in parallel in a predetermined arrangement and orientation with the concave and convex engaging portions provided in each of the contact portions. Two engagement concave portions are provided in the contact portion of the bubble tube mounting base, and the same number of the engagement convex portions that engage with the one contact portion in the concave and convex portions in the contact portion of the other bubble tube mounting base. The level according to any one of claims 1 and 2, wherein the level is provided.   The engaging convex portions and the engaging concave portions provided in the concave / convex engaging portions are bundled in a predetermined arrangement and orientation, and are set at different positions or intervals for each combination of the adjacent bubble tube mounting bases. 4. The level according to claim 3, wherein the plurality of bubble tube mounting bases are configured to be bundled and arranged in a predetermined arrangement and orientation.   In a level which can be provided with a plurality of bubble tube measuring units each composed of a bubble tube enclosing a liquid and bubbles and arranged at different inclination angles to visually confirm the bubble tube measurement unit and confirm the inclination angle of the object to be measured, An engagement fixing body for fixing the bubble tube mounting base provided with the bubble tube measuring unit in a predetermined arrangement and orientation is provided, and a plurality of the bubble tube mounting bases are arranged in a predetermined arrangement and orientation around the engagement fixing body. The bubble tube mounting base that is bundled in parallel and bundled in parallel with the predetermined arrangement and orientation is provided in a case provided with a viewing window portion that can visually recognize the bubble tube measuring portion provided on the bubble tube mounting base. The engagement fixing body and the bubble tube mounting bases arranged around the engagement fixing body are provided with contact portions that contact each other, and are configured to be inserted and fixed. Engagement recess or engagement projection on the part Accordingly, an uneven engagement portion for engaging the engagement fixing body and the bubble tube mounting base with each other is provided, and the uneven engagement portion is arranged in a predetermined arrangement or orientation with the locking fixing portion and the plurality of engagement engagement portions. The bubble tube mounting base engages with the concave and convex portions, can be bundled and accommodated in the case, and if not arranged in a predetermined arrangement and orientation, the locking and fixing portion and the bubble tube mounting base are engaged with the concave and convex portions. A spirit level characterized by being configured so that it cannot be accommodated or cannot be accommodated in the case even when it is unevenly engaged.   The bubble tube mounting base is constituted by a pair of split halves that can be divided into two in the longitudinal direction and can be fitted to each other in a concave-convex manner, and the bubble tube measuring portion is placed on at least one of the pair of split halves in the longitudinal direction of the bubble tube mounting base The bubble level according to any one of claims 1 to 5, further comprising a bubble tube accommodating portion that can be accommodated by being inclined at different inclination angles with respect to directions.   The paired split halves are provided with fitting recesses or fitting convexes that fit into each of the pair of split halves at different positions or shapes for the paired split halves. 7. The level according to claim 6, wherein each of the first and second divided halves cannot be fitted together.

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