JP2010276476A - Inner machine for bourdon tube type meter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact inner machine for a bourdon tube type meter for preventing a performance from being deteriorated. <P>SOLUTION: A light shielding plate 11 includes a notch and is supported by a pinion shaft 8. A sensor 12 for detecting a movement of the light shielding plate 11 is provided in a sensor mechanism 14 extended from a sensor mechanism rotating gear 13 for rotating the sensor 12. The sensor mechanism rotating gear 13 is disposed around the pinion shaft 8 and includes a boss mechanism comprising a boss gear 15, a setting boss 16 protruded from the center of the boss gear 15, and a setting indicator 17 for interlocking with a movement of the setting boss. The boss gear 15 and the sensor mechanism rotating gear 13 are directly or indirectly engaged. The inner machine for the bourdon tube type meter is characterized to have a mechanism for rotating the sensor mechanism rotating gear 13 by the arbitrary quantity through an operation of the setting boss 16, and setting the setting indicator 17 at an arbitrary position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an internal unit for a Bourdon tube type instrument, and a Bourdon tube type pressure gauge and a Bourdon tube type thermometer equipped with the same.

  The Bourdon tube instrument moves the movement of the Bourdon tube tip through the rod, moves the sector, rotates the pinion meshed with the sector, and transmits it to the needle driven on the pinion shaft. Is shown in an enlarged manner (see, for example, Patent Document 1).

An instrument equipped with such a Bourdon tube type instrument is widely used for pressure measurement and temperature measurement.
In particular, the Bourdon tube type pressure gauge is widely used for pressure measurement, and a pressure gauge with a microswitch contact provided with a separate mechanical contact mechanism is known in order to cope with an on-site pressure instruction.
However, since this microswitch contact meter is a contact type, there is a risk that the contact will burn, and because the contact of microswitch etc. is turned on and off by the force of Bourdon tube, it is a type of pressure gauge There is a problem that it is difficult to apply to a low pressure gauge, and as a result, there is a limit to downsizing of the pressure gauge, and improvement has been desired.

When a pressure switch is used, since another contacted micro switch is mounted, the so-called switch internal unit must have a mechanism for pressing the contact type switch. It was different from the internal unit of the meter switch. The pressure gauge required a pressure gauge internal machine, and the pressure gauge switch required a pressure gauge switch internal machine.
Therefore, as a result, pressure gauges and pressure gauge switches are classified, and the concept of “meters” that have only a measurement function is common to “meters”, and that the “switch” is an instrument that adds a control function to the measurement function. It was recognition. The pressure gauge only indicates the pressure position of the fluid, and those that require the control function associated with it have responded by changing the internal unit or changing the force of the Bourdon tube.

  Production sites that change from visual management to see and manage pressure values of pressure gauges to sequence control are demanding functions that can be measured and controlled. (1) The function does not deteriorate, (2) Contact It is not a formula, (3) It is a reasonable price (switches are expensive in a single item), (4) There is no load on the measurement function, (5) It can be handled in one format in the industry, with a special specification There is a demand for the absence of air pressure (1Mpa is the highest pressure in the pneumatic industry).

Japanese Patent No. 3635233

  In response to the above-mentioned demand, the present invention is a signal for sequence control when the pressure value of a set setting guideline is reached, in particular, a Bourdon tube type internal instrument that is contactless and causes almost no performance deterioration. It is an object of the present invention to provide a Bourdon tube type internal instrument that can be obtained through a lead wire, and a Bourdon tube type instrument (especially a Bourdon tube pressure gauge) equipped with the same.

The present inventor has intensively studied to achieve the above-described conventional object. As a result, a sensor is attached to the Bourdon tube instrument, and a mechanism for turning this sensor on and off is attached. When the pressure value of the setting pointer set arbitrarily is reached, a signal for sequence control is obtained through the lead wire. It was found that the purpose can be achieved by assembling the mechanism.
The present invention has been completed based on this finding.

That is, the present invention according to claim 1 is directed to the movement of the tube end of the Bourdon tube, the sector gear is moved about the sector axis through the sector rod and the sector regulator, and the gear meshed with the sector gear is moved. In the Bourdon tube type instrument internal unit, the rotation amount of the tube end of the Bourdon tube is shown in an enlarged manner by rotating the pinion shaft through the pinion shaft and transmitting it to the measurement value guide driven into the pinion shaft;
A light-shielding plate having a shape that is a circular flat plate and has a shape in which a part of the peripheral end thereof is cut out so as to be perpendicular to the pinion shaft;
A sensor for detecting the movement of the light shielding plate is provided so as to sandwich the peripheral edge of the light shielding plate;
The sensor is provided in a sensor mechanism extending from a sensor mechanism rotating gear for rotating the sensor;
The sensor mechanism rotating gear is disposed around the pinion shaft;
And a boss mechanism comprising a boss gear, a setting boss projecting from the center of the boss gear, and a setting pointer interlocking with the movement of the setting boss;
The boss gear and the sensor mechanism rotation gear mesh directly or indirectly;
A mechanism for rotating the sensor mechanism rotating gear by an arbitrary amount by operating the setting boss and setting the setting pointer at an arbitrary position;
It is an object of the present invention to provide an internal unit for a Bourdon tube type instrument.
According to a second aspect of the present invention, an inner peripheral portion of a scale plate attached to the back side position of the measurement value indicator is cut out in a circular shape, and the sensor plate is cut into the cutout portion of the scale plate. A rotary scale plate having a mechanism rotary gear on its inner surface is provided, and the rotary scale plate rotates around the inner peripheral portion of the scale plate along with the rotation of the sensor mechanism rotary gear, 2. The boss mechanism is attached to the scale plate, a setting indicator is attached around the setting boss, and the boss gear and the sensor mechanism rotating gear are directly meshed with each other. The Bourdon tube-type instrument internal unit described above is provided.
According to the third aspect of the present invention, the sensor mechanism rotating gear and the boss mechanism are attached via a mounting base between the scale plate displaying the measurement value and the inner unit upper plate, The sensor mechanism rotating gear is directly meshed with the boss gear in the boss mechanism, and the setting pointer is attached around the head of the sensor mechanism rotating gear protruding on the scale plate. The Bloudon tube type instrument internal unit according to claim 1, wherein the setting indicator and the sensor mechanism are integrated.
In the present invention according to claim 4, the sensor mechanism rotating gear and the boss mechanism are attached via a mounting base between the scale plate displaying the measured value and the inner unit upper plate, The sensor mechanism rotating gear is configured to mesh with a boss gear in the boss mechanism via a double-sided rack, and the sensor mechanism and the sensor mechanism rotating gear are integrated, and The Bourdon tube type instrument internal unit according to claim 1, wherein a double-sided rack and the setting guide are integrated.
The present invention according to claim 5 provides a Bourdon tube pressure gauge incorporating the internal unit for a Bourdon tube instrument according to any one of claims 2 to 4.
The present invention according to claim 6 provides a bourdon tube thermometer incorporating the internal unit for a bourdon tube instrument according to any one of claims 2 to 4.
The present invention according to claim 7 provides the Bourdon tube pressure gauge according to claim 5, comprising an alarm device and a transmission device.
The present invention according to claim 8 provides the Bourdon tube thermometer according to claim 6, comprising an alarm device and a transmission device.

By mounting the Bourdon tube type internal instrument according to the present invention on a Bourdon tube pressure gauge or a thermometer, it is possible to provide a so-called switch function without causing any obstacle to the measurement function.
In particular, if the Bourdon tube pressure gauge internal unit according to the present invention is mounted on a conventional pressure switch, it can be obtained from a contactless sensor from a pressure switch that has a large, expensive, complicated mechanism, and has a contact point but has a problem. It goes in the direction that can be controlled by the signal. In particular, since the force of the Bourdon tube is not required for ON / OFF of the sensor, it can be applied to a low-pressure pressure gauge such as a vacuum gauge and a differential pressure gauge, and the instrument itself can be miniaturized.
The effect of this is to radically renew manufacturing technology in various measuring instrument industries and control equipment industries, and to eliminate measuring instruments that do not have a control signal function. An instrument that best suits the sequence control required by the industry can be provided at a reasonable price. If it is built in a pressure gauge with a diameter of about 25 mm, it can be used as a pressure sensor.

In addition, according to the present invention, it is a manufacturing technique that enables free selection of the starting point of a signal that conveys safety or danger.
That is, it has a feature that an electric signal for sequence control can be obtained through the lead wire at the pressure value of the set setting guideline.
In particular, in the case of the conventional pressure switch, the switch is expensive due to the order-made production based on one by one, and at least the provision of a model corresponding to the industry is required.
For example, the mainstream of industrial production lines, automatic assembly machines, and the like is to set the proper air pressure of related devices by setting the air pressure generation capability of the compressor to the limit of control using the compressor as a power source. In addition, for example, the control signal in the pneumatic industry is a technology that can set the width in addition to providing a mechanism for freely selecting a starting point by setting the maximum to 1.0 MPa.

Further, according to the present invention, the pressure gauge in the current concept is changed to a pressure gauge having a function of a pressure gauge switch, and the thermometer is changed to a thermometer having a function of a thermometer switch.
For example, at the current work site, if the pressure gauge switch is expensive, if the pressure gauge is a pressure gauge, maintenance of quality control by the eyes of the worker is so common that the pressure gauge scale plate is painted blue or red, or with a pointer safety mark I have been guarding for this.
However, with the diversification of workers and the development of industrial bases overseas, there is a growing need to change the quality management method from the eyes to the management by introducing control equipment. Has become the mainstream. Therefore, an instrument having a control function can be provided at an appropriate price.

  In addition, according to the present invention, in the industry where pneumatic equipment is the main power, the simplest management of work lines and equipment where sequence control is mainstream can be completely achieved. At the same time, a receiving device from the manager can be made and attached to the worker's name tag, allowing the operator to feel the bull and eliminate the oversight, thereby completely eliminating the trouble that hinders quality control.

It is a perspective view which shows the state which decomposed | disassembled an example of the Bourdon tube type pressure gauge internal machine of this invention mounted in a pressure gauge. It is a figure which shows the partial cross section state inside the Bourdon tube type pressure gauge internal unit of this invention. It is the figure which looked at the inside of the Bourdon tube type pressure gauge internal unit of this invention from the opposite side to a measured value indicator. It is a figure which shows an example of the scale plate attached to the pressure gauge carrying the Bourdon tube type pressure gauge internal unit of this invention. It is explanatory drawing which shows the positional relationship of a light-shielding plate and a sensor in the Bourdon tube type pressure gauge internal unit of this invention. It is a perspective view which shows the state which decomposed | disassembled an example of the Bourdon tube type pressure gauge internal machine of this invention mounted in a pressure gauge. It is a figure which shows the partial cross section state inside the Bourdon tube type pressure gauge internal unit of this invention. It is the figure which looked at the inside from the measured value indicator side about the inside of the Bourdon tube type pressure gauge internal unit of this invention. It is a figure which shows an example of the scale plate attached to the pressure gauge carrying the Bourdon tube type pressure gauge internal unit of this invention. It is a perspective view which shows the state which decomposed | disassembled an example of the Bourdon tube type pressure gauge internal machine of this invention mounted in a pressure gauge. It is a figure which shows the partial cross section state inside the Bourdon tube type pressure gauge internal unit of this invention. It is the figure which looked at the inside from the measured value indicator side about the inside of the Bourdon tube type pressure gauge internal unit of this invention. It is a figure which shows an example of the scale plate attached to the pressure gauge carrying the Bourdon tube type pressure gauge internal unit of this invention. It is a figure which shows the one aspect | mode of embodiment of the pressure gauge which mounts the Bourdon tube type pressure gauge internal unit of this invention. It is a figure which shows the one aspect | mode of embodiment of the pressure gauge (thing provided with the alarm device (warning device) and the transmission device) carrying the Bourdon tube type pressure gauge internal unit of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, as an example of an internal unit for a Bourdon tube type instrument according to the present invention, an “internal unit for a Bourdon tube type pressure gauge” will be described with reference to FIGS.

1-5 is a figure which shows the one aspect | mode of the Bourdon tube type pressure gauge internal unit of this invention.
Of these, FIG. 1 is a perspective view showing an exploded state of an example of a Bourdon tube pressure gauge internal unit of the present invention mounted on a pressure gauge. FIG. 2 is a diagram showing a partial cross-sectional state inside the Bourdon tube pressure gauge internal unit of the present invention. FIG. 3 is a view of a part of the inside of the Bourdon tube type pressure gauge internal unit of the present invention as viewed from the side opposite to the measurement value indicator. FIG. 4 is a diagram showing an example of a scale plate attached to a pressure gauge equipped with the Bourdon tube pressure gauge internal unit of the present invention. FIG. 5 is an explanatory view showing the positional relationship between the light shielding plate and the sensor in the Bourdon tube type pressure gauge internal unit of the present invention, and is an arrow A view of FIG.

6-9 is a figure which shows another aspect of the Bourdon tube type pressure gauge internal unit of this invention.
Among these, FIG. 6 is a perspective view showing an exploded state of an example of the Bourdon tube type pressure gauge internal unit of the present invention mounted on the pressure gauge. FIG. 7 is a diagram showing a partial cross-sectional state inside the Bourdon tube pressure gauge internal unit of the present invention. FIG. 8 is a view of a part of the inside of the Bourdon tube type pressure gauge internal unit of the present invention as seen from the measured value indicator side. FIG. 9 is a diagram showing an example of a scale plate attached to a pressure gauge equipped with the Bourdon tube pressure gauge internal unit of the present invention.

FIGS. 10-13 is a figure which shows another aspect of the Bourdon tube type pressure gauge internal unit of this invention.
FIG. 10 is a perspective view showing an exploded state of an example of the Bourdon tube type pressure gauge internal unit of the present invention mounted on the pressure gauge. FIG. 11 is a diagram showing a partial cross-sectional state inside the Bourdon tube pressure gauge internal unit of the present invention. FIG. 12 is a view of a part of the inside of the Bourdon tube type pressure gauge internal unit of the present invention as seen from the measured value indicator side. FIG. 13 is a diagram showing an example of a scale plate attached to a pressure gauge equipped with the Bourdon tube pressure gauge internal unit of the present invention.

In the present invention, the movement of the tube tip 2 of the Bourdon tube 1 is moved by moving the sector gear 6 about the sector shaft 5 via the sector rod 3 and the sector regulator 4 and rotating the sector gear 6. The pinion shaft 8 is rotated via the pinion shaft 8 and transmitted to a measurement value guide 9 driven into the pinion shaft 8, and the Bourdon tube type instrument internal unit is shown with an enlarged displacement amount of the pipe tip 2 of the Bourdon tube 1. .
In the figure, reference numeral 10 denotes an internal unit upper plate.
The movement of the pipe tip 2 moves the sector gear 6 with the sector shaft 5 as a rotation axis via the sector rod 3 and the sector adjuster 4, and rotates the pinion shaft 8 via the gear 7 meshed with the sector gear 6. Therefore, finally, the displacement is transmitted to the measured value indicator 9 driven into the pinion shaft 8 to show the displacement amount of the tube tip 2 of the Bourdon tube 1 in an enlarged manner.

The present invention provides a Bourdon tube type instrument internal machine as described above;
A light-shielding plate 11 having a shape of a circular flat plate and a part of the peripheral end thereof being cut out so as to be perpendicular to the pinion shaft 8 is pivotally supported;
A sensor 12 for detecting the movement of the light shielding plate 11 is provided so as to sandwich the peripheral edge of the light shielding plate 11;
A sensor 12 is provided in a sensor mechanism 14 extending from a sensor mechanism rotating gear 13 for rotating the sensor 12;
The sensor mechanism rotating gear 13 is arranged around the pinion shaft 8;
And a boss mechanism A including a boss gear 15, a setting boss 16 projecting from the center of the boss gear 15, and a setting pointer 17 interlocking with the movement of the setting boss 16;
The boss gear 15 and the sensor mechanism rotating gear 13 mesh directly or indirectly;
A mechanism for rotating the sensor mechanism rotating gear 13 by an arbitrary amount by operating the setting boss 16 and setting the setting pointer 17 at an arbitrary position;
It is an object of the present invention to provide an internal unit for a Bourdon tube type instrument.

That is, the light shielding plate 11 is pivotally supported on the pinion shaft 8 protruding from the inner unit upper plate 10 of the Bourdon tube type instrument internal unit so as to be perpendicular thereto.
Here, as shown in FIG. 5, the light shielding plate 11 has a circular flat plate shape, and has a shape in which a part of its peripheral edge is cut out, and a fan-shaped cut-out portion (a portion that does not shield light). And a portion not cut out (a portion to be shielded from light) are mixed.

A sensor 12 for detecting the movement of the light shielding plate 11 is provided so as to sandwich the peripheral edge of the light shielding plate 11.
As the sensor 12, as shown in FIG. 2, a sensor arranged in a substantially U shape or a substantially C shape is used. The peripheral edge of the light-shielding plate 11 is sandwiched between the portions.

Here, the sensor 12 is provided in a sensor mechanism 14 extended from a sensor mechanism rotating gear 13 for rotating the sensor 12.
The sensor mechanism rotation gear 13 is disposed around the pinion shaft 8 and is provided so as not to be interlocked with the movement of the pinion shaft 8.

  Further, a boss mechanism A comprising a boss gear 15, a setting boss 16 projecting from the center of the boss gear 15, and a setting pointer 17 interlocking with the movement of the setting boss 16 is provided. The boss gear 15 in the mechanism A and the sensor mechanism rotating gear 13 are meshed directly or indirectly.

Then, the setting mechanism 17 is set at an arbitrary position by rotating the sensor mechanism rotating gear 13 by an arbitrary amount by operating the setting boss 16. As the setting boss 16, for example, one having a groove (a groove having a shape such as a plus shape, a minus shape, a □ shape, or a △ shape) formed in the head thereof can be used so that the setting boss 16 can be rotated by an arbitrary amount. However, the present invention is not limited to this. In FIG. 1 and the like, a head having a minus-shaped groove is shown, but other than that, a plus-shaped, □ -shaped, △ -shaped groove, or a wrench can be used for rotation. Examples include a polygonal shape (hexagonal, pentagonal, etc.), a rod-like shape or a protrusion-like shape that can be rotated as it is.
In the present invention, a light shielding plate, a sensor mechanism, and the like are arranged around the pinion shaft, but if necessary, a light shielding plate, a sensor mechanism, etc. are arranged around the rotating shaft such as the sector shaft. It can also be arranged.

  More specifically, in the Bourdon tube type instrument internal unit of the present invention, as described above, the mode (first mode) shown in FIGS. 1 to 5 and the mode shown in FIGS. Since it is divided into the (second aspect) and the aspect (third aspect) shown in FIGS. 10 to 13, these three aspects will be described in order below.

First, the Bourdon tube pressure gauge internal unit of the present invention will be described based on one mode (first mode) of the Bourdon tube pressure gauge internal unit of the present invention shown in FIGS.
In this aspect, the inner peripheral portion of the scale plate 18 attached to the back side position of the measurement value indicator 9 is cut out in a circular shape, and the sensor mechanism rotating gear 13 is formed in the cut out portion of the scale plate 18. A circumferential scale plate 19 is provided on the inner surface. The circumferential scale plate 19 is configured to move around the inner peripheral portion of the scale plate 18 along with the rotation of the sensor mechanism rotating gear 13, and the boss mechanism. A is attached to the scale plate 18, the setting pointer 17 is attached around the setting boss 16, and the boss gear 15 and the sensor mechanism rotating gear 13 are directly meshed with each other.

Here, a display scale 18A displaying measurement values and a setting scale 18B displaying set values are attached to the surface of the scale plate 18.
A circular notch portion of the inner peripheral portion of the scale plate 18 is provided with a circumferential scale plate 19 having a sensor mechanism rotary gear 13 on its inner surface. The circumferential scale plate 19 is a sensor mechanism rotary gear. The inner peripheral portion of the scale plate 18 is moved with the rotation of 13.
Here, as shown in FIG. 2, the circumferential scale plate 19 is arranged so as to be loosely sandwiched between the scale plate 18 in the circular cutout portion of the inner peripheral portion of the scale plate 18 (in a loosely inserted state). Therefore, the inner peripheral portion of the scale plate 18 can move (circulate) while sliding.
As shown in FIG. 3, a sensor mechanism rotating gear 13 is provided on the inner surface side of the circumferential scale plate 19, that is, the Bourdon tube 1 side, and the circumferential scale plate 19 and the sensor mechanism rotational gear 13 are integrated. It has become. In particular, it may be formed integrally.

  A sensor mechanism 14 is further extended to the sensor mechanism rotating gear 13, and the sensor mechanism 14 includes a sensor 12. The sensor mechanism rotating gear 13, the sensor mechanism 14, and the circumferential scale plate 19 are molded separately or integrally.

The boss mechanism A including the boss gear 15, the setting boss 16 protruding from the center of the boss gear 15, and the setting pointer 17 interlocking with the movement of the setting boss 16 is provided on the inner surface side of the scale plate 18. That is, it is attached from the Bourdon tube 1 side. Among these, the setting boss 16 is disposed so as to protrude on the scale plate 18.
Further, a setting pointer 17 is attached around the setting boss 16 protruding on the scale plate 18, and the boss gear 15 and the sensor mechanism rotating gear 13 are directly meshed with each other.
The setting pointer 17 can be given a color such as red or blue, for example, to contribute to danger prevention (red needle) or safety indication (blue needle).

The Bourdon tube type pressure gauge internal unit having the structure shown in FIGS. 1 to 5 can be assembled as follows.
First, the movement of the tube tip 2 of the Bourdon tube 1 is moved through the sector rod 3 and the sector adjuster 4, the sector gear 6 is moved about the sector shaft 5 as a rotation axis, and the gear 7 engaged with the sector gear 6 is engaged. A Bourdon tube type internal instrument is prepared that rotates the pinion shaft 8 and transmits it to the measured value guide 9 that is driven into the pinion shaft 8 to show the displacement of the tube tip 2 of the Bourdon tube 1 in an enlarged manner. Such a thing is a well-known thing and can also use what is marketed.

  Next, the light shielding plate 11 is dropped and fixed to the pinion shaft 8 protruding from the inner upper plate 10 of the Bourdon tube type instrument internal unit.

Furthermore, a circumferential scale plate 19 having a sensor mechanism rotating gear 13 is prepared on the inner surface side, that is, on the Bourdon tube 1 side. As described above, the sensor mechanism 14 provided with the sensor 12 is extended to the sensor mechanism rotating gear 13.
Such a circumferential scale plate 19 is set so that the sensor 12 sandwiches the peripheral edge of the light shielding plate 11.

  On the other hand, as shown in FIG. 2, the boss gear 15 protruding from the central portion of the setting boss 16 is meshed with the sensor mechanism rotating gear 13, and in this state, incorporated in the scale plate 18 to set the setting boss 16. It protrudes to the position of the scale 18B. Therefore, the scale plate 18 is provided with a hole for projecting the setting boss 16 to the position of the setting scale 18B.

  The setting pointer 17 is dropped and fixed from the setting boss 16 protruding from the center of the boss gear 15 with the scale plate 18 interposed therebetween.

  The setting boss 16 is rotated using, for example, a screwdriver, and the setting pointer 17 on the setting scale 18B is set at an arbitrary position. As a result, the light shielding plate 11 shields the sensor 12 and the light detected by the sensor 12 is shielded, so that an ON / OFF electrical signal can be extracted.

Next, the Bourdon tube pressure gauge internal unit of the present invention will be described based on another mode (second mode) of the Bourdon tube pressure gauge internal unit of the present invention shown in FIGS. In addition, in FIG. 6, the back surface of the mounting base is also shown.
In this aspect, the sensor mechanism rotating gear 13 and the boss mechanism A are attached via the mounting base 20 between the scale plate 18 on which the measured value is displayed and the inner machine upper plate 10, and the sensor mechanism The rotating gear 13 is directly meshed with the boss gear 15 in the boss mechanism A, and a setting indicator 17 is attached around the head of the sensor mechanism rotating gear 13 protruding on the scale plate 18. In addition, the setting pointer 17 and the sensor mechanism 14 are integrated.

In this embodiment, the scale plate 18 is provided only with a display scale 18A on which measured values are displayed.
A mounting base 20 is disposed between the scale plate 18 and the internal unit upper plate 10. The sensor mechanism rotating gear 13 and the boss mechanism A are attached between the scale plate 18 and the inner machine upper plate 10 via the mounting base 20.
A hole is opened at the center of the sensor mechanism rotating gear 13.
The mounting base 20 only needs to have a structure that allows the sensor mechanism rotating gear 13 and the boss mechanism A to be mounted between the scale plate 18 and the internal unit upper plate 10.
6 and 7, a sensor mechanism rotating gear column 21 and a boss gear column 22 are provided on the surface of the mounting base 20 (on the scale plate 18 side). The sensor mechanism rotating gear column 21 has a hole at its center that does not hinder the rotation of the pinion shaft 8 passed through the sensor mechanism rotating gear column 21.

Further, on the back surface of the mounting base 20, that is, on the Bourdon tube 1 side, a snap mechanism (upper snap mechanism 23A in FIGS. 6 and 7, and lower snap mechanism in FIGS. 6 and 7). Mechanism 23B).
6 and 7, the upper snap mechanism 23 </ b> A is of a hook type, and the tip of the upper snap mechanism 23 </ b> A is hooked into a groove 25 provided in the upper part of the inner unit upper plate 10. On the other hand, the lower snap mechanism 23 </ b> B can be fixed by being pushed into a hole 24 provided in the lower part of the inner unit upper plate 10.
However, the snap mechanism is not necessarily required as long as it is a mechanism that can be coupled to the inner unit upper plate 10.
As shown in FIGS. 6 and 7, a plurality of protrusions 26 are provided on the back surface (bourdon tube 1 side) of the mounting base 20. Thereby, when it attaches to the inner machine upper board 10, it has the structure where the flatness of the mounting base 20 is maintained.

The sensor mechanism rotating gear 13 and the boss mechanism A are attached to the front surface (on the scale plate 18 side) of the mounting base 20 having such a structure and between the back side of the scale plate 18.
The sensor mechanism rotating gear 13 is directly meshed with the boss gear 15 in the boss mechanism A.
The head of the sensor mechanism rotation gear 13 protrudes from the hole 27 formed in the scale plate 18 onto the scale plate 18.

A setting pointer 17 is attached around the head of the sensor mechanism rotating gear 13 protruding from the hole 27 formed in the scale plate 18 onto the scale plate 18 in this way.
Here, the setting pointer 17 and the sensor mechanism 14 including the sensor 12 are integrated. In the figure, the setting pointer 17 and the sensor mechanism 14 including the sensor 12 are integrally formed. However, the setting pointer 17 and the sensor mechanism 14 provided with the sensor 12 are only required to be integrated. It is not something.

The Bourdon tube type pressure gauge internal unit having the structure shown in FIGS. 6 to 9 can be assembled as follows.
First, the tip of the upper snap mechanism 23 </ b> A provided on the back surface (Bourdon tube 1 side) of the mounting base 20 is hooked into the groove 25 provided in the upper portion of the inner machine upper plate 10.
At the same time, the lower snap mechanism 23 </ b> B provided on the back surface of the mounting base 20 is pushed into and fixed to the hole 24 provided in the lower part of the upper unit upper plate 10. At this time, as described above, the flatness of the mounting base 20 is maintained when the mounting base 20 is attached to the upper plate 10 by the plurality of protrusions 26 provided on the back surface of the mounting base 20.

Next, the boss gear 15 is dropped into the boss gear column 22 provided on the surface of the mounting base 20 (the scale plate 18 side), and is also provided on the surface of the mounting base 20 (the scale plate 18 side). The sensor mechanism rotating gear 13 is dropped into the sensor mechanism rotating gear column 21 so that the boss gear 15 and the sensor mechanism rotating gear 13 are directly engaged with each other.
At this time, the tip of the pinion shaft 8 protrudes from a hole formed in the center of the sensor mechanism rotating gear column 21 provided on the surface of the mounting base 20 (on the scale plate 18 side), and further the sensor mechanism rotating gear 13. It also protrudes from a hole in the center of the hole.

  Further, the scale plate 18 is assembled. At this time, the setting boss 16 protruding from the central portion of the boss gear 15 and the head 13A of the sensor mechanism rotating gear 13 are protruded on the scale plate 18. Further, the tip of the pinion shaft 8 protrudes from the scale plate 18.

Next, the light shielding plate 11 is dropped onto the tip of the pinion shaft 8 and fixed according to the set value.
At the same time, the setting pointer 17 integrated with the sensor mechanism 14 provided with the sensor 12 on the sensor mechanism rotating gear 13 (the head 13A) protruding the head 13A on the scale plate 18. And the sensor 12 is sandwiched between the peripheral edges of the light shielding plate 11 and fixed in accordance with the set value.
Then, the measured value indicator 9 is dropped onto the tip of the pinion shaft 8 and fixed according to the set value.

  The setting boss 16 protruding on the scale plate 18 is rotated, and the setting pointer 17 is set at an arbitrary position. Accordingly, the light shielding plate 11 shields the sensor 12 provided in the sensor mechanism 14 and shields the light detected by the sensor 12, so that an ON / OFF electrical signal can be extracted.

Next, the Bourdon tube type pressure gauge internal unit of the present invention will be described based on yet another mode (third mode) of the Bourdon tube type pressure gauge internal unit of the present invention shown in FIGS. In addition, in FIG. 10, the back surface of the mounting base is shown collectively.
In this embodiment, the sensor mechanism rotating gear 13 and the boss gear 15 in the boss mechanism A are attached between the scale plate 18 displaying the measured values and the inner machine upper plate 10 via the mounting base 20. The sensor mechanism rotating gear 13 is configured to mesh with the boss gear 15 in the boss mechanism A via the double-sided rack 30, and the sensor mechanism 14 and the sensor mechanism rotating gear 13 are integrated. In addition, the double-sided rack 30 and the setting pointer 17 are integrated.

  Here, the sensor mechanism 14 including the sensor 12 and the sensor mechanism rotating gear 13 are integrated. In the figure, the sensor mechanism rotating gear 13 and the sensor mechanism 14 including the sensor 12 are integrally molded, but it is sufficient that both are integrated, and the sensor mechanism 14 is not necessarily molded integrally. It is not limited to.

  Similarly, the double-sided rack 30 and the setting pointer 17 are integrated. In the figure, the double-sided rack 30 and the setting pointer 17 are integrally molded. However, the two-sided rack 30 and the setting pointer 17 are not necessarily limited to being integrally molded. Note that gears are provided on both sides of the double-sided rack 30 so as to mesh with the sensor mechanism rotating gear 13 and the boss gear 15, respectively.

  The further embodiment (third embodiment) of the Bourdon tube pressure gauge internal machine of the present invention shown in FIGS. 10 to 13 is characterized by the above points, except for the above points. Specifically, there is much in common with another aspect (second aspect) of the Bourdon tube pressure gauge internal machine of the present invention shown in FIGS.

  Here, the scale plate 18 is provided with a display scale 18A displaying measurement values and a setting scale 18B. Next to the setting scale 18B, a hole (small window-like hole) through which the setting pointer 17 can be protruded is provided, and the tip of the setting pointer 17 protrudes from this hole (small window-like hole).

  A mounting base 20 is disposed between the scale plate 18 and the internal unit upper plate 10. The sensor mechanism rotating gear 13 and the boss gear 15 and the setting boss 16 constituting a part of the boss mechanism A are provided between the scale plate 18 and the inner machine upper plate 10 via the mounting base 20. It is attached.

A hole is opened at the center of the sensor mechanism rotating gear 13.
The mounting base 20 is configured to attach the sensor mechanism rotating gear 13 and the boss gear 15 and the setting boss 16 constituting a part of the boss mechanism A between the scale plate 18 and the inner unit upper plate 10. Any structure can be used.
10 and 11, a sensor mechanism rotating gear column 21 and a boss gear column 22 are provided on the surface of the mounting base 20 (on the scale plate 18 side). The sensor mechanism rotating gear column 21 has a hole at its center that does not hinder the rotation of the pinion shaft 8 passed through the sensor mechanism rotating gear column 21.
A groove 31 in which the double-sided rack 30 can slide is provided in the mounting base 20 in the vertical direction in FIG.

Further, on the back surface (Bourdon tube 1 side) of the mounting base 20, there are snap mechanisms (the left side snap mechanism 23A in FIG. 11 and the right side snap mechanism 23B in FIG. 11) that can be hooked on the inner unit upper plate 10. Is provided.
In FIG. 11, the left-side snap mechanism 23 </ b> A is a hook type, and the tip of the left-side snap mechanism 23 </ b> A is hooked into a groove 25 provided on the left side of the inner unit upper plate 10. On the other hand, in FIG. 11, the right snap mechanism 23 </ b> B can be fixed by being pushed into a hole 24 provided on the right side of the inner unit upper plate 10. The snap mechanism 23A, the snap mechanism 23B, the hole 24, and the groove 25 are actually provided at positions as shown in FIG.

  As shown in FIG. 11, a plurality of protrusions 26 are provided on the back surface (Bourdon tube 1 side) of the mounting base 20. Thereby, when it attaches to the inner machine upper board 10, it has the structure where the flatness of the mounting base 20 is maintained.

A boss that constitutes part of the sensor mechanism rotating gear 13 and the boss mechanism A between the front surface (the scale plate 18 side) of the mounting base 20 having such a structure and the back surface side of the scale plate 18. A gear 15 and a setting boss 16 are attached.
The sensor mechanism rotating gear 13 is configured to mesh with the boss gear 15 in the boss mechanism A via the double-sided rack 30.
Then, the head of the pinion shaft 8 protrudes from the hole 27 formed in the scale plate 18 onto the scale plate 18.

  The Bourdon tube type pressure gauge internal unit having the structure shown in FIGS. 10 to 13 can be assembled as follows.

  First, in FIG. 11, the tip of the left-side snap mechanism 23 </ b> A provided on the back surface (Bourdon tube 1 side) of the mounting base 20 is hooked in the groove 25 provided on the left side of the inner machine upper plate 10. . At the same time, the snap mechanism 23B on the right side in FIG. 11 provided on the rear surface (Bourdon tube 1 side) of the mounting base 20 is provided, and the hole 24 provided on the right side in FIG. Press to fix. At this time, as described above, the flatness of the mounting base 20 is maintained when the mounting base 20 is attached to the inner unit upper plate 10 by the plurality of protrusions 26 provided on the back surface (Bourdon tube 1 side) of the mounting base 20. It will be.

Next, the boss gear 15 is dropped into the boss gear column 22 provided on the surface of the mounting base 20 (on the scale plate 18 side), and the sensor mechanism rotating gear column 21 is also integrated with the sensor mechanism 14. The sensor mechanism rotating gear 13 is dropped, and the double-sided rack 30 integrated with the setting pointer 17 is fitted in the groove 31 of the mounting base 20, and the gears provided on both surfaces are respectively connected to the sensor mechanism rotating gear 13 and the boss. Engage with the gear 15.
At this time, the tip of the pinion shaft 8 protrudes from a hole formed in the center of the sensor mechanism rotating gear column 21 provided on the surface of the mounting base 20 (on the scale plate 18 side), and further the sensor mechanism rotating gear 13. Also protrude from the hole in the center of the hole.
Further, at this time, while the sensor 12 sandwiches the peripheral edge of the light shielding plate 11, it is dropped to the tip of the pinion shaft 8 and fixed in accordance with the set value.

After adjusting the set value so that the tip of the setting pointer 17 protrudes from the surface of the scale plate 18, the scale plate 18 is fixed.
The measured value pointer 9 is dropped onto the tip of the pinion shaft 8 and fixed according to the set value.

  When the setting boss 16 protruding on the scale plate 18 is rotated, the setting pointer 17 is set at an arbitrary position via the double-sided rack 30, the sensor mechanism 14 is rotated, and the sensor mechanism 14 is provided. Since the light shielding plate 11 shields the sensor 12 and the light detected by the sensor 12 is shielded, an ON / OFF electric signal can be extracted.

The assembly of the inner machine upper plate 10 and the inner machine lower plate 32 can be performed as follows.
Here, the reference numeral 33 denotes a balance spring wound around the pinion shaft 8. Reference numeral 34 denotes a support column in which the inner unit upper plate 10 and the inner unit lower plate 32 are assembled.
The inner machine upper plate 10 and two columns 34 for assembling the inner machine lower plate 32 are put into two column holes in the inner machine lower plate 32 and temporarily assembled.

  Then, when the meshing of the gear 7 of the pinion shaft 8 with the balance spring 33 and the gear provided on the sector gear 6 is seen, the upper and lower sides are caulked. In addition, backlash (play) can be eliminated by attaching the balance spring 33 around the pinion shaft 8.

  In addition, it can prevent vibration by setting it as the aspect which attaches a vibration prevention disk to the opposite end to the side which attaches the measurement value pointer | guide 9 of the pinion shaft 8. FIG. Also, vibration can be prevented by attaching a resistance device that stirs oil to the opposite end of the pinion shaft 8 on the side to which the measured value indicator 9 is attached, and attaching the inside of the box filled with oil.

  The inner unit of the present invention is a technology that can cope with all of the differences in size, the difference in the size and the amount of movement of the Bourdon tube, the difference in the enlargement ratio of the inner unit, etc. by changing the gear ratio. In addition, since the Bourdon tube has a slight variation in the amount of movement, the sector adjuster 4 that is an internal unit expansion mechanism is expanded and contracted with pliers or the like so that the display unit (measurement value pointer 9) has a certain angle. Can be adjusted.

The Bourdon tube type instrument internal device of the present invention is a technology applicable to both a pressure gauge and a thermometer. FIG. 14 shows an embodiment of a pressure gauge as an example of a pressure gauge. Show.
If the setting indicator 17 of the pressure gauge is set to a certain value, when the measured value indicator 9 indicating the measured value reaches that value, a signal controlled by the sensor substrate is transmitted through the lead wire 35.

FIG. 14 shows a perspective view of an example of a Bourdon tube pressure gauge equipped with the Bourdon tube instrument internal unit of the present invention.
At the factory, in a production line that operates with an air compressor as the power source, for example, 1 Mpa maximum pressure, a Bourdon tube pressure gauge equipped with the internal pressure gauge of the present invention is installed as a pressure sensor for each type of equipment. A signal when the set value is exceeded can be warned by light emission of an LED or the like. For example, for each work standard and ISO certification standard, the setting boss 16 with a minus-shaped groove is turned, the setting pointer 17 is properly set, and the boss turning window concealing cap 36 formed in the surface glass is applied.
However, air pressure can leak, and it can be changed by outside air.

Therefore, a Bourdon tube pressure gauge shown in FIG. 15 further includes an alarm device (warning device) and a transmission device. In the figure, reference numeral 37 indicates a device box, reference numeral 38 indicates an alarm device, and reference numeral 39 indicates a transmission device.
Examples of the alarm device 38 include a device that transmits a warning by sound and light, or directly transmits vibration to an operator. The operator is allowed to carry a vibrating tool 40 (for example, a bull bull feeling name tag) that applies vibration. At the same time, the transmission is also made by the lead wire 35. In the current situation where frequent troubles do not occur, troubles in quality assurance remain, so it is possible to help ensure reliable quality maintenance.

Conventional pressure gauges, vacuum gauges, differential pressure gauges, thermometers, altimeters, hygrometers, and other instruments have been used as switches by using a microswitch or the like when a control function is required.
According to the present invention, it is possible to provide a sensor-type pressure gauge and thermometer that can obtain a signal that is not a conventional pressure switch or temperature switch by a single type of internal unit incorporating a sensor.
First of all, the switch has a structure that makes it easy to set prices in fields that are difficult to use due to its high price. In particular, in the field of pressure gauges, “red” and “blue” are colored on the scales and managed to appeal to the eyes. It can also be used for pressure switches of explosion-proof type and various special specifications.

Further, according to the present invention, since the sensor is a non-contact type, durability performance is improved.
Furthermore, providing instruments that not only measure but “shake” can contribute to industry.

  Also, the instrument called “switch” has a uniform specification for each product, but according to the present invention, it is really simple, such as extracting a complicated signal. Even in the industry, it is a technology that can be handled within a certain common sense that if it is a hydraulic pressure gauge ... if it is pneumatic ...

  In addition, as a sensor for equipment in every industrial field, every production site and medical field, as a thermometer in agricultural greenhouse management, as a checker for residual pressure with good heat efficiency of propane gas, as a delicious checker for draft beer, gas A function that can be freely set while having different specifications for each industry, such as a residual pressure checker of the same kind, is an indispensable technology for generalization for each industry.

  In addition, the instruments that are measuring instruments by interposing an expansion mechanism called an internal machine based on the lever principle can easily provide a control function according to the principle of the present invention. In addition, it is a technology that can be mounted on measuring instruments such as a water meter with a rotating shaft, and a measuring instrument using a hollow container chamber.

  Also, in Japan, the labor market is demanded overseas, and the work management for maintaining the quality in the field where living with foreigners in Japan is becoming a past system for visual management. . As the ISO standard is generalized at every site, it can be constructed as a management system that directly communicates abnormalities in production lines to individuals. When the total cost is reduced with a pressure sensor of an appropriate price, and it deviates from the registration standard in this era of the ISO standard, it is possible to realize management that makes the worker feel directly bull.

DESCRIPTION OF SYMBOLS 1 Bourdon pipe 2 Pipe tip 3 Sector rod 4 Sector adjuster 5 Sector shaft 6 Sector gear 7 Gear 8 Pinion shaft 9 Measurement value guide 10 Inner unit upper plate 11 Light shielding plate 12 Sensor 13 Sensor mechanism rotating gear 14 Sensor mechanism 15 Boss Gear 16 Setting boss 17 Setting guideline 18 Scale plate 18A Display scale 18B Setting scale 19 Circumferential scale plate 20 Mounting base 21 Sensor mechanism rotating gear column 22 Boss gear column 23A Snap mechanism 23B Snap mechanism 24 Hole on inner machine plate 25 Inner machine upper plate groove 26 Protrusion 27 Scale plate hole 30 Double-sided rack 31 Mounting base groove 32 Inner machine lower plate 33 Balance spring 34 Strut 35 Lead wire 35
36 Boss turning window concealed cap 37 Device box 38 Alarm device 39 Transmitting device 40 Vibration tool

Claims (8)

The movement of the Bourdon tube tip is moved through the sector rod and sector adjuster, the sector gear is moved around the sector shaft, the pinion shaft is rotated via the gear meshed with the sector gear, and the pinion shaft is moved to the pinion shaft. In the Bourdon tube instrument internal unit, which is transmitted to the measured value indicator that is driven in, and shows the displacement of the tube end of the Bourdon tube enlarged;
A light-shielding plate having a shape that is a circular flat plate and has a shape in which a part of the peripheral end thereof is cut out so as to be perpendicular to the pinion shaft;
A sensor for detecting the movement of the light shielding plate is provided so as to sandwich the peripheral edge of the light shielding plate;
The sensor is provided in a sensor mechanism extending from a sensor mechanism rotating gear for rotating the sensor;
The sensor mechanism rotating gear is disposed around the pinion shaft;
And a boss mechanism comprising a boss gear, a setting boss projecting from the center of the boss gear, and a setting pointer interlocking with the movement of the setting boss;
The boss gear and the sensor mechanism rotation gear mesh directly or indirectly;
A mechanism for rotating the sensor mechanism rotating gear by an arbitrary amount by operating the setting boss and setting the setting pointer at an arbitrary position;
A Bourdon tube instrument.   The inner periphery of the scale plate attached to the back side position of the measurement value indicator is cut out in a circular shape, and the sensor mechanism rotating gear is provided on the inner surface of the cutout portion of the scale plate. A dynamic scale plate is provided, and the circumferential scale plate is configured to move around the inner peripheral portion of the scale plate as the sensor mechanism rotation gear rotates, and the boss mechanism is attached to the scale plate. 2. The Bourdon tube instrument internal unit according to claim 1, wherein a setting indicator is attached around the setting boss, and the gear for the boss and the rotation gear for the sensor mechanism are directly meshed with each other. .   The sensor mechanism rotating gear and the boss mechanism are attached via a mounting base between the scale plate displaying the measured values and the inner machine upper plate, and the sensor mechanism rotating gear is connected to the boss The setting pointer is attached to the periphery of the head of the sensor mechanism rotating gear that is directly meshed with the boss gear in the mechanism and protrudes on the scale plate. The internal unit for a Bourdon tube type instrument according to claim 1, wherein the sensor mechanism is integrated.   The sensor mechanism rotating gear and the boss mechanism are attached via a mounting base between the scale plate displaying the measured value and the inner machine upper plate, and the sensor mechanism rotating gear is mounted on a double-sided rack. The boss gear in the boss mechanism is meshed with the sensor mechanism and the sensor mechanism rotating gear, and the double-sided rack and the setting indicator are integrated. The internal unit for a Bourdon tube type instrument according to claim 1, wherein   A Bourdon tube pressure gauge incorporating the Bourdon tube instrument internal unit according to any one of claims 2 to 4.   A Bourdon tube thermometer incorporating the Bourdon tube instrument internal unit according to any one of claims 2 to 4.   The Bourdon tube pressure gauge according to claim 5, comprising an alarm device and a transmission device.   The Bourdon tube thermometer according to claim 6, comprising an alarm device and a transmission device.

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