JPH116730A - Angle measuring rule with digital display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate reading errors, by providing a rotary type sensor on a fulcrum arranged at the ends of a rule A and a rule B to digitally display electrical signals obtained by the rotary sensor depending on the angle of opening between the rule A and the rule B. SOLUTION: A fulcrum is arranged at the end parts of a rule A1 and a rule B1. An opening or a closing is made between the rule A1 and the rule B2 centered on the fulcrum to obtain a necessary angle, which is matched with an object to be measured. A rotary type sensor 4 is provided on the fulcrum and the rule A1 is fixed at a part 4a of the rotary type sensor, while the rule B2 fixed at a part 4b of the rotary type sensor. An angle with the opening or closing of the rule A1 and the rule B1 is converted to an electrical signal by the rotary type sensor 4, and the obtained electrical signal is inputted into a control circuit part 5. The electrical signal is converted to a digital display signal to perform a digital display with a digital display device 6. The integral designing enables visual recognition of an angle simply with convenience in carrying and operating, and displaying by a digital number eliminates the generation of reading errors as caused by reading persons.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an angle measuring ruler with a digital display.

[0002]

2. Description of the Related Art Conventionally, when measuring an angle, the angle is measured by using a metal or plastic protractor, the size of a measured object is calculated and the angle is calculated, or the angle is measured by an angle measuring device using gravity. Was measured.

[0003]

This has the following disadvantages. (A) When measuring using a protractor, it was difficult to match with the measurement reference plane of the object to be measured, and it was difficult to accurately read the measured dimension value. (B) In the method of measuring the dimensions of the object to be measured and calculating the angle by calculation, the method is complicated and time-consuming, and the angle cannot be easily obtained. (C) With an angle measuring device using gravity, accuracy measurement in the vertical direction could be performed, but angle measurement in a direction other than the vertical direction could not be accurately measured. (D) In a measuring instrument having a graduation such as a protractor, a reading error is caused by a person who reads the graduation. The present invention has been made to solve these disadvantages.

[0004]

An angle measuring ruler with a digital display according to the present invention is provided with a rotary sensor (4) at a fulcrum provided at each end of a ruler A (1) and a ruler B (2).
A control circuit unit (5) for digitally displaying an electric signal obtained by the rotary sensor (4) according to the opening angle of the ruler A (1) and the ruler B (2), and a digital display (6). It is characterized by.

[0005]

Embodiments of the present invention will be described below. (A) A fulcrum is provided at the end of the ruler A (1) and the ruler B (2), and the ruler A (1) and the ruler B (2) open and close around the fulcrum, thereby matching the object to be measured. Get the required angle.
The size of the ruler is freely determined as long as it can be manufactured. (B) A rotary sensor (4) is provided at the fulcrum of the ruler A (1) and the ruler B (2), and (4) of the rotary sensor (4) is provided.
A ruler A (1) is fixed to part a), a ruler B (2) is fixed to part (4b) of the rotary sensor (4), and a ruler A
The angle formed by the opening and closing of (1) and the ruler B (2) is converted into an electric signal by the rotary sensor (4). For the rotation type sensor (4), for example, a variable resistor, an optical rotation detector, or a magnetic rotation detector, which is commercially available, can be used. (C) The electric signal obtained by the rotary sensor (4) is input to a control circuit unit (5) for performing digital display, and converted into a digital display signal by the control circuit unit (5), and the digital display ( A signal is sent to 6) to perform digital display. As the control circuit section (5) and the digital display (6), those already on the market can be used. (D) Cover (3) to prevent dust from entering the inside of ruler A (1), ruler B (2), and rotary sensor (4)
By providing, the measuring instrument can be protected. The present invention is configured as described above. When this is used, the ridge line (1a) of the ruler A (1) and the ridge line (2a) of the ruler B (2) are aligned with the object to be measured. The angle made by the object is displayed on the digital display (6).

[0006]

An embodiment will be described with reference to the drawings. In the embodiment shown in FIG. 1, the angle measuring ruler incorporating a rotary sensor (4) incorporates a control circuit section (5) and a digital display (6) to form an integrated angle measuring ruler with a digital display. Is represented. The feature of this embodiment is that the angle is easy to carry and the operability is easy and easy to visually recognize because of the integral type. The embodiment in the case of FIG. 5 has a measurement ruler incorporating a rotary sensor (4) and a control display box (8) in which a control circuit section (5) and a digital display (6) are separated separately. This shows an embodiment in which each is connected by a signal cable (7). The feature of this embodiment is that the angle measurement location and the location where the angle is digitally displayed and recognized can be performed at remote locations.

[0007]

The present invention is embodied in the form described above, and has the following effects. (A) The angle to be measured is displayed digitally by aligning the ridge lines of the measurement ruler A and the measurement ruler B with the object to be measured, so that the angle can be easily recognized at a glance. (B) Since a digital numerical value is displayed, a reading error by a reader does not occur. (C) Since the angle is measured by the open angle between the measurement ruler A and the measurement ruler B, the angle measurement can be performed without being affected by gravity. (D) In the case of the measuring method in which the measuring unit and the digital display unit are separated, the measuring angle can be visually confirmed at a remote place.

[0008]

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of the present invention.

FIG. 2 is an exploded perspective view in which a part of the present invention is cut away.

FIG. 3 is a cross-sectional view of the present invention.

FIG. 4 is a front external view of the present invention.

FIG. 5 is a partially cutaway perspective view showing an embodiment in which the angle measurement ruler, the control circuit section, and the digital display section of the present invention are separated and separated.

[0009]

[Explanation of symbols]

 1 Ruler A 1a Ruler A ridgeline 2 Ruler B 2a Ruler B ridgeline 3 Cover 4 Rotary sensor 4a Part of rotary sensor 4b Part of rotary sensor 5 Control circuit part 6 Digital display 7 Signal cable 8 Control display box

Claims (5)

[Claims] 1. A rotary sensor is provided at a fulcrum of a ruler A and a ruler B which intersect each other, and a digital display for controlling an electric signal of the rotary sensor and displaying an angle between the ruler A and the ruler B is provided. Angle measuring ruler with digital display. 2. An angle measuring ruler with a digital display according to claim 1, wherein a variable resistor, an optical rotation detector, or a magnetic rotation detector is used for the rotation type sensor. 3. The angle measuring ruler with digital display according to claim 1, wherein an LED element or an LCD element is used as a display for digital display. 4. The angle measuring ruler with a digital display according to claim 1, wherein a digital display is provided on the ruler A side or the ruler B side to be integrated. 5. A measuring unit having a rotary sensor provided at a fulcrum of ruler A and ruler B intersecting each other, and a display unit for digital display are separately provided and connected by a conductor for transmitting an electric signal. Angle measuring ruler with digital display.