JPS5920150B2 - calculation mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to an arithmetic mechanism used in a measuring instrument.

More specifically, the present invention relates to a calculation mechanism suitable for use in a pneumatic measuring instrument.

An object of the present invention is to provide a small and inexpensive square root and square calculation mechanism.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a diagram explaining the principle of the present invention.

In the figure, reference numeral 1 denotes a first rigid beam, to which Fl is applied to one end, and the other end is rotatably supported on a fulcrum 01.

2 is a second rigid beam, one end of which is fixed to the other end of the first rigid beam.

Reference numeral 3 designates a leaf spring whose one end is connected to the other end of the second rigid beam and to which force F2 is applied to the other end.

As shown in the figure, 11 and 12 are the forces F1. Each arm length up to the point of action of F2 is represented.

Therefore, when the force F2-0, the other end of the leaf spring 3 is at the fulcrum 0.
1, and 12=0.

Now, force F1 is input and force F2 is output.

When the input F increases and the output F2 increases, the leaf spring 3
is bent and deformed with the connection point 02 with the second rigid beam 2 as a fixed end, and the arm length 12 increases.

In this case, the output F2 is proportional to the square root of the input F1 if the spring characteristics are linear, as shown in the equation below.

Now, assuming that input F1 and output F2 are balanced, Fl 11 = F212 ...... (1
) The relationship between the arm length 12 and the output F2 is F2-k12 (2) However, k is the spring constant of the leaf spring 3 that indicates the relationship between the output F2 and the arm length 12. do.

According to equation (IX2), the square root of the input F1 can be obtained by measuring the output F2.

Furthermore, if the input and output are switched, equation (3) can be obtained, and the square of the input can be obtained as the output.

FIG. 2 is a diagram illustrating the configuration of an embodiment in which the present invention is applied to a pneumatic computing unit.

In the figure, the same symbols as in FIG. 1 indicate the same functions.

4 is input bellows, 5 is output bellows, 6 is input beam, 7
8 is an output beam, 8 is a pneumatic amplifier, 9 is a nozzle, and 10 is a zero adjustment spring.

03 to 08 are flexure supports using leaf springs, for example.

The input bellows 4 is to which an input pressure Pin is introduced, and its free end is engaged with the input beam bellows.

One end of the input beam rod is connected to the first rigid beam 1 via a fulcrum 03, and the other end is connected to a housing etc. via a fulcrum 05, and can be freely bent at a fulcrum 04.

As shown in FIG. 2, the nozzle 9 is arranged to constitute a nozzle flapper mechanism in which a part of the first rigid beam is a flapper.

The air pressure amplifier 8 amplifies the back pressure of the nozzle 9, and its output is applied to the output chamber 05 and taken out as an output pressure Pout.

The free end of the output bellows 5 is engaged with the output beam T.

The output beam 7 is configured such that one end is connected to the leaf spring 3 via a fulcrum 06, the other end is coupled to a housing etc. via a fulcrum 08, and can be freely bent at the fulcrum 07.

The zero adjustment spring 10 is provided to connect the output beam 7 and the casing.

In the above configuration, when the input pressure Pin is introduced into the bellows 4, the bellows 4 expands and contracts, the input beam rotates about O3 as a fulcrum, and applies a force F to the first rigid beam 1.

In response to this force F1, the first rigid beam 1 rotates about 01 as a fulcrum, increasing or decreasing the back pressure of the nozzle 9.

This change in back pressure is fed back to the bellows 5, and the moment F212 of Flll is balanced with respect to the fulcrum 01.

3A, B, and C are concrete design examples of the present invention, where A is a plan view, B is a side view, and C is an explanatory diagram of the main part configuration.

In this embodiment, as shown in FIG. 4, the input F1 and the output F2 are arranged almost in a straight line, and the bellows 4 and 5, which occupy a relatively large area, are arranged close together, thereby achieving further miniaturization. It is something.

In the above embodiment, an example was explained in which a pneumatic computing unit was constructed using the bellows 4 and 5 and a nozzle flapper mechanism, but it could also be configured as an electrical computing unit by detecting force electrically. Of course you can.

Furthermore, it goes without saying that the first rigid beam 1 and the second rigid beam 2 may be constructed integrally.

As described above, the present invention utilizes a rigid beam and a folded flexure mechanism to configure a square root or square calculation mechanism.

As a result, it is possible to realize a small and inexpensive arithmetic mechanism with a simple configuration.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the principle of the present invention, Fig. 2 is an explanatory diagram of the configuration of an embodiment in which the present invention is used in a pneumatic computing unit, and Fig. 3
Figures A, B, and C are examples of the specific design in Figure 2, where A is a plan view, B is a side view, C is an explanatory diagram of the main part configuration, and Figure 4 is the third
It is an explanatory view of a figure.

Claims (1)

[Claims] 1 A first rigid beam to which an input or output is applied to one end and the other end rotatably supported on a fulcrum, a second rigid beam having one end fixed to the other end of the first rigid beam, and the second rigid beam One end is connected to the other end of the beam, the other end is provided parallel to one side of the second rigid beam, and the other end is connected to an output corresponding to an input applied to the first rigid beam or an output applied to the first rigid beam. and a leaf spring to which a corresponding input is applied.