JP2010266269A - Internal machine for bourdon tube instruments - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internal machine for Bourdon tube instrument without performance deterioration, capable of acquiring a noncontact signal for sequence control when reaching a set pressure value, and to provide a Bourdon tube instrument installed with the same. <P>SOLUTION: The internal machine for Bourdon tube instrument indicates by expanding an amount of displacement of the tube tip 25 of the Bourdon tube 24, by transmitting a movement of one of the tube tips 25 of the Bourdon tube 24 having twin tube tips 25 via a sector gear 8 and a pinion shaft 3 to a measured value indicator needle 27, wherein the mechanism is provided such that a sensor mechanism 15, a light shielding plate 17, a boss mechanism 20 and a pedestal gear 22 are set and a setting indicator needle 23 is attached to a scale plate 26 and the pedestal gear 22 so that a setting gear 21 and a sensor mechanism rotating gear 16 are engaged and the setting gear 21 and the pedestal gear 22 are engaged. <P>COPYRIGHT: (C)2011,JPO&amp;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 the microswitch etc. is turned on and off by the force of a Bourdon tube, the type of pressure gauge As a result, there is a problem that it is difficult to apply to a pressure gauge for low pressure, and there is a limit to downsizing of the pressure gauge as a result, 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 individually 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 Bourdon tube type instrument internal unit that is contactless and causes almost no deterioration in performance, particularly when the pressure value of the setting pointer set at an arbitrary position is reached. An object of the present invention is to provide an internal unit for a Bourdon tube type instrument in which a control signal can be obtained through a lead wire, and a Bourdon tube type instrument (particularly a Bourdon tube type 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 moves one sector of a Bourdon tube pipe tip having two pipe tips through a sector rod and a sector adjuster to move a sector gear with the sector axis as a rotation axis, Turn the pinion shaft through a gear meshing with the sector gear, and transmit it to the measurement value guide driven into the pinion shaft to enlarge the amount of displacement of the tube end of the Bourdon tube. In the machine, it has a “sensor mechanism” having one or more sensors for detecting the movement of the light shielding plate mechanism, and the sensor mechanism is extended from a sensor mechanism rotating gear having a sensor mechanism column as a rotation axis. And having a “light-shielding plate mechanism” that passes through a sensor portion of the sensor mechanism, wherein the light-shielding plate mechanism is another end of a Bourdon tube having the two tube tips. By air, which via a rod and the light shielding plate mechanism for adjusting a resonator for the light shielding plate mechanism moves as the rotation axis the sensor mechanism strut;
A “boss mechanism” is formed by dropping a setting gear having a setting boss on the head on the boss strut, and the setting gear has the boss strut as a rotation axis; A setting guide base gear attached to the pinion shaft so as not to interlock with the rotation of the pinion shaft; and the setting gear and the sensor mechanism rotating gear mesh with each other; and The sensor mechanism, the light shielding plate mechanism, the boss mechanism, and the pedestal gear are set so that the setting gear and the pedestal gear are engaged with each other, and a setting pointer is attached to the dial and the pedestal gear. An internal machine for a Bourdon tube type instrument characterized by the above-mentioned is provided.
According to a second aspect of the present invention, the light shielding plate mechanism is connected to a spring connected to the upper plate of the inner unit so that chattering due to vibrations does not occur when passing through the sensor portion of the sensor mechanism. An internal unit for a Bourdon tube type instrument according to claim 1 is provided.
The present invention according to claim 3 provides a bourdon tube pressure gauge incorporating the internal unit for a bourdon tube instrument according to claim 1 or 2.
The present invention according to claim 4 provides a Bourdon tube thermometer incorporating the Bourdon tube instrument internal unit according to claim 1 or 2.
The present invention according to claim 5 provides the Bourdon tube type pressure gauge according to claim 3, comprising an alarm device and a transmission device.
The present invention according to claim 6 provides a Bourdon tube thermometer according to claim 4, 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, a so-called switch function can be provided without causing any trouble in 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 to turn on and off the sensor, it can be applied to a low-pressure pressure gauge such as a vacuum gauge or 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.

Further, according to the present invention, it is a manufacturing technique that enables free selection of a 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 equipment 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.

According to the present invention, the pressure gauge in the present 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.

  Further, according to the present invention, in the industry where the pneumatic equipment is the main power, the simplest management of the work line and various equipment where the sequence control is mainstream can be completely performed. 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 instrument internal unit of this invention. It is a figure which shows an example of the inside of the pressure gauge which mounts the internal machine for Bourdon tube type instruments of this invention. It is a perspective view which shows an example of the state after assembling the main components of the Bourdon tube type instrument internal unit of this invention. It is a figure which shows an example of the display board attached to the pressure gauge which mounts the internal machine for Bourdon tube type instruments of this invention. It is a figure which shows an example of embodiment of the pressure gauge which mounts the internal machine for Bourdon tube type instruments of this invention. It is a figure which shows an example of embodiment of the pressure gauge which mounts the internal machine for Bourdon tube type instruments of this invention. It is a figure which shows another aspect of the light-shielding plate mechanism in this invention. It is a figure which shows another aspect of the light-shielding plate mechanism in this invention. It is a figure which shows another aspect of the light-shielding plate mechanism in this invention.

  The present invention relates to a gear that meshes with the sector gear by moving one sector of a Bourdon tube tip having two pipe tips through a sector rod and a sector regulator and moving the sector gear around the sector shaft as a rotation axis. It is related with the Bourdon tube type instrument internal machine which expands and shows the displacement amount of the tube end of a Bourdon tube by rotating a pinion shaft via a pin and transmitting it to a measurement value guide driven into the pinion shaft.

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 mainly with reference to FIGS. FIG. 1 is a perspective view showing an exploded state of an example of an internal unit for a Bourdon tube type instrument of the present invention mounted on a pressure gauge. Moreover, FIG. 2 is a figure which shows an example of the inside of the pressure gauge which mounts the internal machine for Bourdon tube type instruments of this invention. FIG. 3 is a perspective view showing an example of a state after assembling main components of the Bourdon tube type instrument internal unit of the present invention.
The internal unit for Bourdon tube type instrument of the present invention includes an inner unit upper plate 1, a setting pointer base 2, a pinion shaft 3, a boss column 4, a sensor mechanism column 5, an inner unit lower plate 6, a column 7, a sector gear 8, and a sector. Mainly composed of a shaft 10, a sector rod 11a, a light shielding plate mechanism rod 11b, a sector adjusting member 12a, a light shielding plate mechanism adjusting member 12b, a sensor mechanism 15, a light shielding plate mechanism 17, a boss mechanism 20, and a pedestal gear 22. It is.

First, as shown in FIG. 1, the setting pointer base 2 is mounted on the inner machine upper plate 1 at a position where the pinion shaft 3 is mounted so as not to hinder the rotation of the pinion shaft.
Further, the boss strut 4 and the sensor mechanism strut 5 are attached on the inner machine upper plate 1.

Next, the pinion shaft 3 with the balance spring 9 is put in the shaft hole formed in the inner machine lower plate 6 and the sector shaft 10 is put in the sector shaft hole.
Next, two columns 7 for assembling the inner unit upper plate 1 and the inner unit lower plate 6 are put into two column holes of the inner unit lower plate 6 and temporarily assembled.
Then, look at the meshing of the gear of the pinion shaft 3 with the balance spring and the gear provided on the sector gear 8, and then swivel up and down. Note that backlash (play) can be eliminated by attaching a balance spring 9 to the pinion shaft 3 and fixing one end of the balance spring 9 to the column 7.
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 pointer | guide of the pinion axis | shaft 3. FIG. Alternatively, vibration can be prevented by attaching a resistance device that stirs oil to the opposite end of the pinion shaft 3 to which the measurement pointer is attached and attaching the inside of the box filled with oil.

The sector gear 8 and the sector rod 11a are connected via a sector adjuster 12a. Specifically, the rod pins 13 are used for connection.
The sector rod 11a is connected to one of the two pipe tips 25 attached to the end surface of the Bourdon tube 24 when mounted on the instrument.
Accordingly, one movement of the pipe tip is caused by moving the sector gear 8 with the sector shaft 10 as the rotation axis via the sector rod 11a and the sector adjuster 12a, and the pinion shaft 3 via the gear meshed with the sector gear 8. Turning the. Therefore, finally, it is transmitted to the measured value indicator 27 driven into the pinion shaft 3, and the displacement amount of the tube end of the Bourdon tube is shown enlarged.

Next, the sensor mechanism 15 to which the sensor 14 is attached is dropped into the sensor mechanism column 5.
The sensor mechanism 15 includes a sensor 14 that detects the movement of the light shielding plate mechanism 17, and has a shape extending from a sensor mechanism rotating gear 16 having the sensor mechanism support column 5 as a rotation axis. In addition, although it is an aspect provided with one sensor in FIGS. 1-3, a plurality can also be provided.

The light shielding plate mechanism 17 and the light shielding plate mechanism rod 11b are connected through a light shielding plate mechanism adjuster 12b. Specifically, the rod pins 13 are used for connection.
The light shielding plate mechanism rod 11b is connected to the other end of the two tube tips 25 attached to the end surface of the Bourdon tube 24 when mounted on the instrument.
Accordingly, the light-shielding plate mechanism 17 is moved by the movement of the other tube tip through the light-shielding plate mechanism rod 11b and the light-shielding plate mechanism adjuster 12b. It moves with the plate axis 28) as the rotation axis. At that time, it moves so as to block the light detected by the sensor 14 through the part of the sensor 14 of the sensor mechanism 15.
Unlike the sector gear 8 (which meshes with the pinion shaft 3 with the balance spring 9), backlash (play) occurs in the light shielding plate mechanism 17, and the light is staggered. Therefore, a weak spring or the like (for example, the spring 29) is hooked (connected) to the light shielding plate mechanism 17 and the inner unit upper plate 1 and the play is moved to one of the sides and pressed down, so that the sensor portion of the sensor mechanism is reduced. It is possible to suppress chattering due to vibration when passing.

  Here, the light shielding plate mechanism 17 has a hole for insertion into the sensor mechanism support column 5 in the lower portion, and has a sensor passage light shielding plate in the upper portion. The shape of the light shielding plate mechanism 17 may be any shape as long as the portion of the sensor passing light shielding plate can pass through the portion of the sensor 14 of the sensor mechanism 15. In addition, in FIGS. 1-3, a horizontally long thing is shown. Another mode of the light shielding plate mechanism 17 is shown in FIGS.

  1 to 3, the sensor mechanism 15 is first dropped onto the sensor mechanism column 5 and the light shielding plate mechanism 17 is dropped thereon, but the positions of the sensor mechanism 15 and the light shielding plate mechanism 17 are reversed. It is also possible to do.

A boss mechanism 20 having the boss column 4 as a rotation axis is dropped into the boss column 4. The boss mechanism 20 has a setting boss 19 on the head and a setting gear 21 on the pedestal portion. 1 to 3, the setting boss 19 has a shape in which a minus-shaped groove is formed in the head, but may be any shape that can rotate the boss mechanism 20.
For example, in addition to those having a minus-shaped groove in the head, those having a plus-shaped groove, polygonal shapes (hexagonal, pentagonal, etc.) that can be rotated with a wrench, etc. it can.
The setting gear 21 is installed so as to mesh with the sensor mechanism rotating gear 16.

In FIG. 1 to FIG. 3, the setting gear 21 is a gear in which upper and lower gears with different outer circumferences are stacked, and the lower (back side) outer gear is meshed with the sensor mechanism rotating gear 16. In addition, a gear having a large outer periphery on the upper side (front side) is meshed with the base gear 22.
When the setting boss 19 is rotated counterclockwise (for example, 54 °) by a screwdriver or the like, the meshing sensor mechanism rotating gear 16 moves clockwise (27 ° in the gear ratio mode of FIG. 2). Further, the meshing base gear 22 is also moved clockwise (27 ° in the aspect ratio of the gear in FIG. 2).
3 and 4, after the scale plate 26 is assembled, the setting pointer 23 is assembled to the pedestal gear 22. The setting pointer 23 rotates in conjunction with the movement of the base gear 22.
1 to 3, the rotation direction of the setting boss 19 and the rotation direction of the setting pointer 23 are opposite to each other. However, when it is desired to make the rotation direction the same, the setting gear 21 and the pedestal gear are used. It is also possible to change the forward / reverse direction to be the same by installing another gear between the two.

In this way, by assembling the integrated product, the Bourdon tube type instrument internal device of the present invention can be completed.
In the Bourdon tube type instrument internal unit of the present invention, by rotating the setting boss 19, the setting pointer 23 on the scale plate 26 moves to an arbitrary position, and the light shielding plate mechanism 17 shields the sensor 14 from light. Signals ON and OFF are transmitted.

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 12a, which is an internal unit expansion mechanism, is expanded and contracted with pliers or the like so that the display unit (measurement value pointer 27) has a certain angle. Can be adjusted.
Specifically, in the case of a pressure gauge, when a pressure of 1.0 Mpa is applied to the Bourdon tube, the sector adjuster 12a is expanded and contracted with pliers or the like so that the movement angle of the sector gear 8 becomes 27 °. can do. When the pressure gauge using the above internal unit is assembled, when a pressure of 1.0 MPa is applied to the Bourdon tube, the measured value pointer 27 is 270 ° on the scale plate 26 by moving the tube tip by 2.4 mm. It is assumed that the motor is rotating, and the expansion ratio of the internal unit is assumed to be 1:10 for the pinion gear and the sector gear.
Further, the angle of the light shielding plate mechanism 17 can be adjusted by extending or contracting the light shielding plate mechanism adjuster 12b with pliers or the like.

The Bourdon tube type instrument internal device of the present invention is a technique applicable to both a pressure gauge and a thermometer. FIG. 5 shows an embodiment of a pressure gauge as an example of a pressure gauge. Show.
If the setting indicator 23 of the pressure gauge is set to a certain value, a signal controlled by the sensor substrate is transmitted through the lead wire 31 when the measured value indicator 27 indicating the measured value reaches that value.

  The Bourdon tube type instrument internal unit of the present invention is normally provided with the pinion shaft 3, but the internal unit may be configured without the pinion shaft 3 as necessary. In this case, since the measurement value indicator cannot be installed, the measurement value itself is not displayed, but it can be used as a pressure sensor or a temperature sensor that is used (or not used) when, for example, the pressure or temperature reaches a certain value. .

FIG. 5 shows a perspective view of an example of a Bourdon tube type pressure gauge equipped with the Bourdon tube type internal instrument 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 that is less than the set value or exceeds the set value can be warned by light emission from an LED or the like. For example, for each work standard and ISO certification standard, the setting boss 19 with a minus-shaped groove is turned, the setting pointer 23 is properly set, the boss is turned on the surface glass, and the window cover cap 32 is used.
However, air pressure can leak, and it can be changed by outside air.

Therefore, a Bourdon tube pressure gauge shown in FIG. 6 further includes an alarm device (warning device) and a transmission device. In the figure, reference numeral 33 denotes a device box, reference numeral 34 denotes an alarm device, and reference numeral 35 denotes a transmission device.
Examples of the alarm device 34 include a device that transmits a warning by sound or light, or that directly transmits vibration to an operator. The worker is allowed to carry a vibrating tool 36 (for example, a bull bull feeling name tag) that applies vibration. At the same time, the lead wire 31 is also used for transmission. 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, not only measuring but also providing “instrumental” instruments such as “abnormal set pressure” can contribute to the 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.

1: Inner machine upper plate 2: Setting pointer base 3: Pinion shaft 4: Boss support column 5: Sensor mechanism support column 6: Inner unit lower plate 7: Support column 8: Sector gear 9: Balance spring 10: Sector shaft 11a: Sector rod 11b: Shading plate mechanism rod 12a: Sector adjusting member 12b: Shading plate mechanism adjusting member 13: Rod pin 14: Sensor 15: Sensor mechanism 16: Sensor mechanism rotating gear 17: Light shielding plate mechanism 19: Setting boss 20: Boss mechanism 21: Setting gear 22: Pedestal gear 23: Setting guide 24: Bourdon tube 25: Pipe tip 26: Scale plate 27: Measurement value guide 28: Shading plate shaft 29: Spring 31: Lead wire 32: Drilled on the surface glass A certain boss turning window concealed cap 33: Device box 34: Alarm device 35: Transmitter device 36: Vibrating tool

Claims (6)

  One movement of the Bourdon tube tip having two tube tips is moved through the sector rod and the sector adjuster, the sector gear is moved about the sector axis as a rotation axis, and the gear meshed with the sector gear Rotating the pinion shaft and transmitting it to the measurement value guide that is driven into the pinion shaft, in the Bourdon tube instrument internal unit showing the amount of displacement of the tube end of the Bourdon tube; A "sensor mechanism" having one or a plurality of sensors to be extended, and the sensor mechanism is extended from a sensor mechanism rotating gear having a sensor mechanism support column as a rotation axis; A light-shielding plate mechanism that passes through the region, and the light-shielding plate mechanism is moved by another movement of the tube end of the Bourdon tube having the two tube tips. And a light-shielding plate mechanism adjuster to move the sensor mechanism support column as a rotation axis; and a “boss mechanism” in which a setting gear having a setting boss on the head is dropped on the boss support column. The setting gear has the boss strut as a rotation shaft; a setting guide base gear mounted on the pinion shaft of the upper plate of the inner unit so as not to be interlocked with the rotation of the pinion shaft. And so that the setting gear and the sensor mechanism rotating gear mesh with each other, and the setting gear and the pedestal gear mesh with each other, the sensor mechanism, the light shielding plate mechanism, the boss mechanism, and An internal unit for a Bourdon tube type instrument having a mechanism in which a base gear is set and a setting pointer is attached to the dial and the base gear.   2. The Bourdon tube according to claim 1, wherein the light shielding plate mechanism is connected to a spring connected to the upper plate of the inner unit so that chattering due to vibration does not occur when passing through the sensor portion of the sensor mechanism. Internal machine for type instrument.   A Bourdon tube pressure gauge incorporating the Bourdon tube instrument internal unit according to claim 1.   A Bourdon tube thermometer comprising the Bourdon tube instrument internal unit according to claim 1 or 2.   The Bourdon tube pressure gauge according to claim 3, comprising an alarm device and a transmission device.   The Bourdon tube thermometer according to claim 4, comprising an alarm device and a transmission device.

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