JPH0672008U - Level - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a spirit level that can accurately measure the horizontality or verticality of an object to be measured by stabilizing the spirit level on the surface to be measured with a magnet. [Structure] A groove 2 is provided on the lower surface of a base 1 to form two abutting surfaces 2a and 2b orthogonal to each other, and bubble tubes 3a and 3 are provided on the back of the base.
In the level equipped with b and 3c, notches 5 are provided on both sides of the central portion of the base 1, and hinges 6 are provided corresponding to the notches, and the hinges 7 are freely movable into and out of the groove. And a magnet 8 is attached to the rotating piece.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a spirit level used to measure horizontality and verticality.

[0002]

[Prior art]

 The level is made by attaching a bubble tube to the base, and the contact surface provided on the base is applied to the surface to be measured of the measured object to measure the horizontality or verticality of the measured object, It is used to measure a slight inclination of an object, and various levels of level are used for each purpose according to the purpose of use.

Depending on the object to be measured, it may be required to measure the level automatically in parallel with the longitudinal direction of the object to be measured. For this reason, the level should be held in the hand and measured. The applicant of the present invention has proposed a spirit level that can easily measure the horizontality or verticality of a surface to be measured without causing an error due to the skill of the measurement procedure simply by hitting the surface to be measured. In this level, a groove is provided on the lower surface of the base to form two orthogonal contact surfaces, and a bubble tube is attached to the rear surface of the base.

[0004]

[Problems to be solved by the device]

 When measuring the horizontality or verticality of the measured object using the above-mentioned conventional level, the worker cannot remove the hand from the level applied to the measured surface of the measured object. While the level is being used, the work of adjusting the levelness or verticality of the measured object must be interrupted, which complicates the work and reduces work efficiency.

The present invention has been made in view of the above points, and for an object to be measured made of a magnetic material, a magnet is bonded to the surface to be measured so that the base is placed on the surface to be measured. It is an object of the present invention to provide a spirit level that can be stabilized and can be released from the spirit level to continuously adjust the levelness or verticality of the measured object while looking at the spirit level.

[0006]

[Means for Solving the Problems]

 The gist of the present invention for achieving the above object is to provide a level in which a groove is provided on the lower surface of the base to form two orthogonal contact surfaces, and a bubble tube is attached to the back of the base. A notch is provided on both sides of the central part of the base, and a hinge is provided corresponding to the notch, and a pivoting piece that can freely move in and out of the groove is provided on the hinge, and the pivoting piece has a magnet. It is in a spirit level characterized by wearing

[0007]

[Action]

 When the object to be measured is made of a magnetic material, if the rotating piece is unfolded and the magnet is bonded to the surface to be measured, the base is stabilized on the surface to be measured. In this state, you can remove the hand from the level and look at the level to adjust the levelness or verticality of the measured object. Since the magnet is attached to the rotating piece and functions independently of the contact surface, the precision of the spirit level will not be degraded by the fine iron powder adhering to the magnet.

[0008]

【Example】

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

FIG. 1 is a perspective view of a spirit level according to the present invention, FIG. 2 is a plan view, and FIG. 3 is a side view.

In the figure, reference numeral 1 is a base of a level, and a groove 2 is provided on the lower surface of the base 1 to form two abutting surfaces 2a and 2b which are orthogonal to each other.

Reference numerals 3a, 3b and 3c denote bubble tubes attached to the back of the base 1 via a mounting member 4. Two bubble tubes 3a, which measure the water levelness, are sandwiched so that the verticality is measured back to back. Bubble tubes 3b and 3c are arranged. The vertical angle of one bubble tube 3c is adjusted in advance so as to measure the verticality of the axial center of the tapered columnar body whose outer surface has a known tapered surface.

Reference numeral 5 is a notch provided on both sides of the central portion of the base 1, 6 is a hinge provided corresponding to the notch 5, 7 is a turning piece protruding from the hinge 6, and 8 is a turning piece 7. With the attached magnet, the rotating piece 7 is in contact with the outer surface of the base 1 in the folded state, and in the unfolded state, the rotating piece 7 can freely go in and out of the groove 2 through the notch portion 5 so as to face each other.

In the above configuration, when the rotating piece 7 is folded, the horizontality or verticality of the object to be measured can be measured like the conventional spirit level.

A usage mode of the present invention when the object to be measured is made of a magnetic material will be described with reference to FIGS. 4 to 9.

FIG. 4 shows a measurement procedure in the case of a large-diameter tube body in which the object to be measured does not enter the groove.

The edges of the two contact surfaces 2a and 2b are applied to the surface of the tubular body A ₁ for measurement. The horizontal degree is measured by the bubble tube 3a, and the vertical degree is measured by the bubble tube 3b. Also, set the center of the pipe A ₁ . When the rotating piece 7 is unfolded and the magnet 8 is bonded to the surface of the tubular body A ₁ , the base 1 is stabilized on the tubular body A ₁ . In this state, you can remove the hand from the level and look at the level to adjust the horizontal or vertical level of the tube A ₁ .

FIG. 5 shows a measurement procedure in the case where the object to be measured is a small-diameter tubular body that enters the groove.

Tube A₂Put in groove 2 and pipe A₂The two contact surfaces 2a and 2b are applied to the surface and measured. Tube A by bubble tube 3a₂The horizontality of the is measured by the bubble tube 3b. Also, the pipe A₂Set the center of. The rotating piece 7 is unfolded and the pipe A is inserted in the groove 2. ₂ The magnet 8 so that the magnet 8 can be held.₂When it is glued on top, the base 1 is a pipe A₂ Stable on top. In this state, remove the hand from the spirit level and look at the spirit level.₂ You can adjust the levelness or verticality of the.

FIG. 6 shows a measurement procedure when the object to be measured is a rectangular tube.

[0020] put the corners of the tube A ₃ in the grooves 2, measure two of the contact surface 2a to the tube A ₃ side, the 2b abuts have. The horizontal degree of the tubular body A ₃ is measured by the bubble tube 3a, and the vertical degree is measured by the bubble tube 3b. Further, the center of the tubular body A ₃ is set. When the rotating piece 7 is unfolded and the magnet 8 is adhered onto the tubular body A ₃ , the base 1 is stabilized on the tubular body A ₃ . In this state, you can remove the hand from the water level and look at the level to adjust the horizontal or vertical degree of the pipe A ₃ .

FIG. 7 shows a measurement procedure in the case where the object to be measured is a flat plate having a planar spread.

The edges of the two contact surfaces 2a and 2b are applied to the flat plate A ₄ surface for measurement. The horizontal degree is measured by the bubble tube 3a, and the vertical degree is measured by the bubble tube 3b. When the rotating piece 7 is developed and the magnet 8 is adhered to the flat plate A ₄ surface, the base 1 is stabilized on the flat plate A ₄ . In this state, the leveling or flatness of the flat plate A ₄ can be adjusted while looking away from the level and looking at the level.

FIG. 8 shows a measurement procedure in the case where an object to be measured measures the verticality of a columnar body having a known tapered surface configuration of a tapered shape whose outer surface is very gently like an electric pole, for example. .

Two contact surfaces 2a and 2b are applied to the surface of the pillar A ₅ (known taper surface) for measurement. The verticality of the axial center of the columnar body A ₅ is measured by the bubble tube 3c. Also, the center of the pillar A ₅ is set. When the turning piece 7 expand to adhere the magnet 8 on column body A _5, the base 1 is stabilized on pillar A _5. In this state, it is possible to adjust the verticality of the axis of the cylinder A ₅ while looking at the level with the hand off the level.

[0025]

[Effect of device]

 According to this invention configured as described above, the following effects can be obtained.

(1) When the object to be measured is made of a magnetic material, the base is stably level on the surface to be measured when the rotating piece is expanded and the magnet is bonded to the surface to be measured. Since it is possible to remove the hand from the level, it is possible to adjust the levelness and verticality of the measured object while looking at the level, which improves work efficiency.

(2) Since the magnet is attached to the rotating piece that is rotatable with respect to the base, the magnet functions independently of the contact surface of the base, and the level is adjusted by the fine iron powder or the like attached to the magnet. It does not reduce the accuracy of the vessel.

(3) In the state in which the rotating piece is folded, it is the same as the conventional level, and there is no error due to the skill of the measurement procedure, and anyone can easily measure.

(4) When the object to be measured is a tubular body, since the level automatically stabilizes in the longitudinal direction of the object to be measured and stabilizes, there is no error in measurement from this surface, and the tubular body is eliminated. You can easily set the center of.

[Brief description of drawings]

FIG. 1 is a perspective view of a spirit level according to the present invention.

FIG. 2 is a plan view.

FIG. 3 is a side view.

FIG. 4 is an explanatory view of a usage state.

FIG. 5 is an explanatory view of a usage state.

FIG. 6 is a diagram illustrating a usage state.

FIG. 7 is an explanatory diagram of a usage state.

FIG. 8 is an explanatory diagram of a usage state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Grooves 3a, 3b, 3c ... Bubble tube 5 ... Notch 6 ... Hinge 7 ... Rotating piece 8 ... Magnet

Claims (1)

[Scope of utility model registration request] 1. In a spirit level in which a groove is provided on a lower surface of a base to form two orthogonal contact surfaces, and a bubble tube is attached to a back portion of the base, cut portions are provided on both sides of a central portion of the base, A level, characterized in that a hinge is provided corresponding to the cut portion, a pivoting piece that can freely move in and out of a groove is provided on the hinge, and a magnet is attached to the pivoting piece.