JPH0612904U - Simple angle measuring device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a simple angle measuring device with a digital display of an angle measured by a simple and inexpensive method. [Structure] Each of the seven segments is composed of a light emitting element, and indicators L1 to L3 for displaying numbers by switching ON-OFF of each segment,
The contacts S _{1 to} S ₉ corresponding to each segment are arranged on the conductor 7 rotatably provided, and the contact surface of the conductor 7 corresponds to a segment which does not require lighting at every predetermined angular displacement. The concave portion 14 in which the insulator 15 that insulates the contact point is buried is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a simple angle measuring device for measuring an arbitrary angle.

[0002]

[Prior art]

 Conventionally, as this type of device, a device as shown in FIG. 6 is known. This is a semi-circular protractor 20 with a scale of 0 to 180 °, a fixed plate 21 fixed to the horizontal along the 0 ° line of the protractor 20, and a notch 20a opened along the inner circumference of the protractor. The movable plate 22 is formed by inserting the convex portion 22a and rotating around the center of the protractor 20 as a fulcrum. With this, an arbitrary angle can be measured only by applying the fixed plate 21 to the measurement reference and moving the movable plate 22 in accordance with the movement of the object to be measured. However, in such a conventional device, it takes time to read the scale of the protractor and it takes time to perform the measurement, so that a device capable of displaying the measured value has been required.

[0003]

[Problems to be solved by the device]

 Therefore, it has been considered to use a variable resistor to change the angle into an electric signal and display the measured angle through a display device. When such a device is used for digital display, A / D conversion, 2 Decimal-decimal conversion and decimal-7 segment conversion are required, which makes the device complicated and expensive. An object of the present invention is to provide an angle measuring device capable of digital display with a simple and inexpensive device in order to deal with such a problem.

[0004]

[Means for Solving the Problems]

 Therefore, in order to solve the above-mentioned problems, the present invention is to configure each of the seven segments by a light-emitting element, and to display a number by switching the ON-OFF of each segment, and each segment. Insulation for arranging the corresponding contacts for each rotation on a disc-shaped conductor that is rotatably provided, and insulating the contacts corresponding to the segments that do not require lighting at each predetermined angular displacement on the arrangement surface of the contacts on the conductor The present invention provides a simple angle measuring device having a recess in which a body is embedded.

[0005]

[Action]

 According to the present invention, the value measured by a simple method can be digitally displayed for each predetermined angle unit.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings. 1 and 2 are explanatory views showing the overall configuration of an embodiment of the present invention. Reference numeral 1 is a main body of the measuring device, which is composed of a measuring section 4 in which two measuring plates 2 and 3 are rotatably combined and a display section 5 in which 7 segments are arranged. The measuring section 4 and the display section 5 are connected by signal lines. And a harness 8 that bundles the power supply lines.

The measurement plates 2 and 3 have a reference line in the center, and one side of the plate shape is formed into a circular shape, and the shaft holes 9 a, which are formed at the centers of the circular portions 9 and 10, The measuring shafts 2 and 3 are rotatable by inserting the spindle 11 into 10a. Further, a brass disk 7 having conductivity is fitted in the circular portion 9 of the measuring plate 2, and further, in the circular portion 10 of the measuring plate 3, switch elements S _{1 to} S ₉ which are connected to respective LED terminals described later are connected. A contact A for communicating with a power source is elastically arranged on the extension of the reference line. As a result, when the measurement plates 2 and 3 are assembled on the support shaft 11, the switch elements S _{1 to} S ₉ and the contact A come into contact with the disk 7 to form the measurement unit 4.

The display unit 5 is formed by arranging in parallel display units L1, L2, L3, which are well-known 7-segments in which LED terminals l _{1 to} l ₇ are arranged in an 8-shape as shown in FIG. The numbers are digitally displayed by switching the lighting and extinguishing of the LED terminals in the display unit, and in this embodiment, it is possible to display from 0 to 180 ° in 5 degree units. Since the display unit L1 displays the unit of the angle and is a display in units of 5 degrees as described above, "0" or "5" is displayed here. The display L2 displays the tens digit of the angle and displays the numbers "0" to "9". The display unit L3 displays the 100th position of the angle, and since it is a display up to 180 ° as described above, "1" or all lights off are displayed here.

FIG. 3 is a wiring diagram of the display unit 5 and the measuring plate 3. The contactor A provided on the measuring plate 3 is connected to the power source 12 from the power source line via the main body switch 11, and the switch elements S _{1 to} S ₉ are connected to the respective indicators via the signal line. Here, the switching element S ₁ to S ₇ connected to the LED terminals l ₁ to l ₇ indicator L2, switching element S ₈ is connected to the l ₃及beauty l ₅ indicator L3, switching element S ₉ Is connected to the display L1 via the relay 13. _{L 1, l 2, l 5} , l 6 of the indicator L1 is always connected to power source 12, the normally open switch NO, l ₇ of the relay 13, the normally closed switch NC is connected to a l ₃ and l ₄ . Therefore, if the switch element S ₉ is ON, it is connected to the normally open switch NO of the relay 13 to display “0”, and if the switch element S ₉ is OFF, it is connected to the normally closed switch NC and displays “5”. Is.

Next, the disk 7 will be described with reference to FIG. Since the disk 7 is formed of a metal such as brass having conductivity, when the contact A contacts to energize and each switch element comes into contact with the disk, the LED corresponding to the switch element contacted. The terminals are lit. In addition, in order to switch between turning on and off each LED terminal according to the measured angle, the recess 14 should be cut so that the LED terminals that do not need to be turned on are energized on the trajectory of each switch element. There is. In other words, on the disk, 0 degree is displayed on the display unit 5 in a state where the measurement plate 2 and the measurement plate 3 are overlapped, and 5 ° and 10 ° are displayed on the display unit 5 every time the measurement plate 3 moves 5 degrees. Cutting is performed to switch ON-OFF of the switch element so that it changes from 15 ° to 15 °. Further, in order to smooth the disk, an insulating resin 15 is embedded in each of the recesses.

The operation of the embodiment configured as described above will be described by taking as an example the case of measuring how far the patient can reach the arm. When the patient reaches the maximum stretchable position, the measuring part 4 is placed on the elbow and the reference line of the measuring plate 3 is parallel to the upper arm. Then, the measuring plate 2 is rotated toward the forearm so that the reference line of the measuring plate 2 is parallel to the forearm (FIG. 5a). The display unit 5 switches the display every time the measurement plate 2 moves 5 degrees, and digitally displays the angle to be measured. Here, when the measured angle is 165 °, the display L3 is “1”, the display L2 is “6”, and the display L1 is “5” due to the shape of the disk 7 as shown in FIG. 5B. Are displayed respectively. That is, ON the switching element S ₈ for displaying "1" on the display unit L3, OFF the switching element S ₂ and S ₅ of the LED terminal l ₂ and l ₅ in order to display the "6" on the display unit L2 The concave portion to be cut is cut, and the switch element S ₉ is turned off so that "5" is displayed on the display L1. Therefore, it is possible to read the measured angle on a digital display.

Since the angle change is displayed as an electric signal in the above embodiment, the measurement result can be printed out by connecting to the printer via the micro computer. Further, it is possible to develop various data processing such as averaging of measured values, comparison and graphing according to the function of the computer.

[0013]

[Effect of device]

 Since the present invention is formed as described above, the measurement angle is digitally displayed and the reading is simplified, the measurement does not take a long time, the burden on the measurer is reduced, and the patient to be measured takes only a short time. Because it does not become a burden. Moreover, since an A / D converter is not required, digital display can be realized by a simple and inexpensive method.

[Brief description of drawings]

FIG. 1 is an external view of a simple angle measuring device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an internal cross section and a detailed configuration of the device.

FIG. 3 is a wiring diagram of the device.

FIG. 4 is an explanatory view in which a part of the device is cut and the inside is enlarged.

5 (a) and 5 (b) are explanatory views showing a usage example of the same apparatus.

FIG. 6 is an external view showing a conventional angle measuring device.

[Explanation of symbols]

1 Measuring device main body 5 Display part 7 Conductor disk 14 Concave part 15 Insulator resin S _{1 to} S ₉ Switch element L1 to L3 contact point Display device

Claims (1)

[Scope of utility model registration request] 1. A display device in which each of the 7 segments is composed of a light emitting element, and a number is displayed by switching ON and OFF of each segment, and a contact corresponding to each segment is freely rotatable. On the disk-shaped conductor provided on the surface of the conductor, and a concave portion in which an insulator is embedded to insulate the contact corresponding to a segment that does not need to be lit at each predetermined angular displacement is provided on the arrangement surface of each contact on the conductor. A simple angle measuring device.