JPH06281401A - Deflection measuring tape - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a tape measure for bending measurement, which can accurately measure the bending of a chain or the like in a narrow place with one hand. [Structure] A first magnet 31 for fixing the scale end stopper 30 to a metallic fixed object near the object to be measured,
It includes a second magnet 41 that is in close contact with a bending indicator metal fitting 42 that indicates one limit position of the bending of the object to be measured, a pinch fixing metal member 51 that can pinch the object to be measured, and a pinch moving metal member 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection measuring tape measure, and more particularly to an improved deflection measuring tape measure capable of accurately and easily measuring the deflection of an object to be measured.

[0002]

2. Description of the Related Art When measuring the deflection of an object to be measured such as a chain, a tape measure is applied to the object to be measured, the measurer bends the object to be measured, and the deflection width is measured as the deflection.

An example of such a conventional tape measure for measuring deflection is shown in cross section in FIG. This example measures the deflection of an escalator chain.

In FIG. 8, an iron scale 20 is spirally wound and stored in a scale storage case 10. Also, the scale retainer button 1 is attached to the scale storage case 10.
1 is provided, and when the measurer presses the scale presser button 11, the scale presser plate 12 that interlocks with this presses a part of the iron scale 20 in the scale storage case 10. Therefore, fix the iron scale 20. You can Then, once the scale pressing button 11 is pressed, the iron scale 20 is kept fixed even after the hand is released. A scale tip stopper 30 is provided at the tip of the iron scale 20.

FIG. 4 shows an explanatory view inside the truss 60 of the escalator. In FIG. 4, in order to measure the flexure Lx of the escalator chain 70, first, the measurer holds the scale storage case 10 of the taper for measuring the flexure shown in FIG. Pull with the opposite hand to pull out about 20 to 30 cm, and press the scale pressing button 11 with your thumb to fix the iron scale 20. Next, the scale surface of the iron scale 20 that is being pressed is applied to the chain 70 with the scale side facing toward the measurer. In this state, the chain 70 is pushed up and down, and when the chain 70 is pushed up, the scale of the iron scale 20 is read and stored on the upper surface of the chain 70. Further, when the chain 70 is pushed downward, the scale of the iron scale 20 is also read on the upper surface of the chain 70. The difference between these two scales is the flexure Lx of the chain 70.
Is.

[0006]

However, when the flexure Lx is measured by this method, since the iron scale 20 is pressed against the chain 70 by hand, when the chain 70 is pushed up and down, There is a problem that the iron scale 20 moves together and a measurement error occurs.

Further, depending on the size of the truss 60 of the escalator, it is not possible to work with both hands, and the above-mentioned conventional bending measuring tape measure that requires working with both hands cannot measure the bending Lx of the chain 70. There is also.

The present invention has been made in view of the above conventional problems, and an object thereof is to accurately measure the deflection of a chain or the like with one hand in a place where freedom of the body is restricted, such as in a truss of an escalator. It is to provide a tape measure for bending measurement capable of performing

[0009]

In order to achieve the above object, the present invention provides a first tape provided at the tip of a tape measure scale.
And a second magnet slidably provided on the scale.
And a grip portion that is provided in the scale storage case of the tape measure and that grips the object to be measured.

Further, it is preferable that the scale includes a subscale having a scale whose numerical value increases from the entrance of the scale storage case toward the tip of the scale.

[0011]

According to the above construction, since the tip of the scale can be fixed to the truss of the escalator by the first magnet, the scale can be pulled out from the scale storage case with one hand.
After pulling out the scale, the tape measure can be fixed to the chain with the grip, so the operator does not need to have the tape measure in hand during the measurement work, and the second magnet can slide on the scale. Sometimes it can be used as a mark of the bent length when pushing the chain up or down.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the bending measuring tape of the present invention. The same members as those in the conventional example in FIG. 8 described above are designated by the same reference numerals and the description thereof will be omitted. II- in FIG.
A sectional view taken along II is shown in FIG. 2, and a sectional view taken along III-III is shown in FIG.

In FIG. 1, a first magnet 31 is adhered to a tip stopper 30 provided at the tip of the iron scale 20. Also, the iron scale 20 has a second magnet 4
1 is slidably provided together with the movable holder 40 and the bending indicator 42. This is shown in FIG. The movable holder 40 is for preventing the bending indicator 42 bonded to the second magnet 41 from coming off the iron scale 20. In addition, the second magnet 41 is configured to hold the deflection indicating metal fitting 42 on the iron scale 20 and engage with the claw portion of the movable holder 40 so as to be slidable on the iron scale 20. is there. One end of the bending instruction metal fitting 42 is bent into an L shape, and the bent surface faces the scale storage case 10.

The scale storage case 10 is provided with a pinch fixing member 51 and a pinch moving member 52. Each of the metal fittings 51 and 52 has an L-shaped end bent at 90 °, and one of the bent surfaces faces the above-described bending indicating metal fitting 42. Sandwich fixing bracket 5
1 is fixed to the scale storage case 10. Further, as shown in FIG. 3, the pinch moving metal fitting 52 is fixed to the moving base 53 which is slidably engaged with the claw portion of the fixed base 50 fixed to the scale storage case 10, and the fixed base 50 is fixed on the fixed base 50. Can be slid in the pull-out direction of the iron scale 20.

The surface of the pinching and fixing member 51 which is bent and faces the bending indicating member 42 is brought into contact with the bent surface of the bending indicating member 42 when the bending indicating member 42 moves to the entrance of the scale storage case 10. It is provided in. Further, the surface of the clip fixing metal fitting 51 opposite to the surface in contact with the bending instruction metal fitting 42 can cooperate with the bent surface of the clip moving metal fitting 52 to clamp the object to be measured. Therefore, the pinch fixing metal member 51 and the pinch moving metal member 52 constitute the grip portion of the bending measuring tape of the present invention.

Next, a method of measuring the flexure Lx of the escalator chain 70 shown in FIG. 4 with the flexure measuring tape of this embodiment will be described.

As shown in FIG. 5, the first magnet 31 adhered to the scale tip stopper 30 is magnetically fixed to the iron angle 61 provided on the truss 60 of the escalator. Then, an operator pulls the iron scale 20 by holding the scale storage case 10 in his hand and pulling it together with the moving holder 40, and pulls it to the chain 70. In this case, the first magnet 31 needs to have a magnetic force that does not easily come off the iron angle 61.

In this state, the chain 70 is sandwiched between the bent surfaces of the sandwiching clamp 51 and the sandwiching clamp 52.

FIG. 6 shows a state in which the chain 70 is sandwiched between the pinch fixing metal member 51 and the pinch moving metal member 52. In this state, the chain 70 is pushed up together with the movable holder 40 (pushed in the direction of the scale tip stopper 30), and the hand holding the movable holder 40 at the position where the bending of the chain 70 is stopped is released. As a result, the second magnet 41 is magnetically fixed to the iron scale 20 at one limit position of the bending of the chain 70. Next, the chain 70 is pushed down, and the scale pressing button 11 is pushed at the position where the bending is stopped to fix the iron scale 20 in that state.

FIG. 7 shows a state in which the iron scale 20 is fixed.

Next, the pinch moving metal fitting 52 is moved to remove the chain 70 from between the pinching fixed metal fitting 51 and the clip moving metal fitting 52. After removing the chain 70, angle 6
The 1st magnet 31 is removed from 1, and the bending measurement tape is drawn to the hand, and the bending measurement value is read.

In order to read the deflection measurement value, the scale of the iron scale 20 indicated by the bent surface of the deflection indicating metal fitting 42 and the scale of the iron scale 20 indicated by the bent surface of the sandwiching fixing metal fitting 51 are read. Read each. The difference between the two scales read is the flexure Lx of the chain 70.

A feature of the present invention is that the scale tip stopper 3 is closely attached to the scale tip stopper 3.
A first magnet 31 for fixing 0 to the angle 61,
The second magnet 41 is in close contact with the bending indicating metal fitting 42 that indicates one limit position of the bending of the chain 70, and the nipping fixing metal fitting 51 and the nipping moving metal fitting 52 that can fix the chain 70 by sandwiching it. . As a result, the chain 70
The measurement of the deflection can be performed by one measurer with one hand.

In the present invention, the scale of the iron scale 20 is graduated at 1 mm intervals, with the scale 0 at the tip of the iron scale 20 to which the scale tip stopper 30 is attached. Therefore, in order to know the deflection Lx, the difference between the two read scales must be calculated. Therefore, it is preferable to add to the iron scale 20 a sub-scale having a scale whose numerical value increases at intervals of 0 to 1 mm from the entrance of the iron scale 20 provided in the scale storage case 10 toward the tip of the iron scale 20. is there. Since the graduation of the sub-scale indicated by the bent surface of the bending instruction fitting 42 is the bending width Lx of the chain 70, the bending Lx can be directly read as a dimension, and the above calculation can be eliminated.

[0026]

As described above, according to the present invention,
Since the tip of the iron scale can be fixed to the escalator truss by the first magnet, the iron scale can be pulled out from the scale storage case with one hand. Further, since the tape measure can be fixed to the chain by the grip portion after pulling out the iron scale, the operator does not need to have the tape measure in his hand during the measurement work. Furthermore, since the second magnet is slidable on the scale, it can be used as a mark of the bent length when the chain or the like is bent during the bending measurement. As a result,
It is possible to provide a deflection measuring tape measure capable of accurately measuring the deflection of a chain or the like with one hand in a place where freedom of body is restricted, such as in a truss of an escalator.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a bending measuring tape measure according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an explanatory diagram inside a truss of an escalator.

5 is an explanatory view of a method for measuring the deflection by the deflection measuring tape measure of the embodiment of FIG.

FIG. 6 is an explanatory diagram of a method for measuring the deflection by the deflection measuring tape measure of the embodiment of FIG.

FIG. 7 is an explanatory diagram of a method for measuring the bending by the bending measuring tape of the embodiment of FIG.

FIG. 8 is an explanatory diagram of an example of a conventional tape measure for measuring deflection.

[Explanation of symbols]

 10 Scale Storage Case 11 Scale Press Button 20 Iron Scale 30 Scale Tip Stopper 31 First Magnet 40 Moving Holder 41 Second Magnet 42 Bending Indicator Metal Fitting 51 Clip Fixing Metal Fitting 52 Clipping Metal Fitting

Claims (2)

[Claims] 1. A first tape provided on the tip of a tape measure scale.
And a second magnet slidably provided on the scale, and a grip portion provided in the scale storage case of the tape measure for holding an object to be measured. Tape measure. 2. The tape measure for deflection measurement according to claim 1, wherein the scale includes a subscale having a scale whose numerical value increases from the entrance of the scale storage case toward the tip of the scale. Characteristic tape measure for deflection measurement.