JP2004271209A - Instrument of measurement numerical value indication type by pointer horizontal turning of spiral pressure gage or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enlarge only a numerical value display part, while leaving the size of the whole measuring device in a compact size. <P>SOLUTION: A numerical value display row 5 for displaying a measurement value is displayed circularly around the center point near the center of a circular part of a housing 1 in an instrument having an effective measuring range below 180 degrees of the numerical value display row 5 printed on a dial plate 2. A pointer shaft 3' is provided on the spot positioned in the opposite direction to the numerical value display row 5 from the center point 2a of the arc of the numerical value display row 5, and a pointer 4' is coupled with the pointer shaft 3 and turned in parallel with the dial plate 2, to thereby indicate one point on a graduation 5a of the numerical value display row 5. A stock 6 which is a driving part drives the pointer 4 by a signal from a measuring object. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention generally relates to an instrument such as a pressure gauge, and more particularly to an instrument in which a numerical display portion of a dial indicating the measured value has an arc shape. In particular, the position of the arc-shaped numerical display column of the measured value is set at a position eccentric to the pointer axis, and the pointer such as a spiral gas pressure gauge rotates horizontally to read the measured value. It relates to the type of instrument indicated.
[0002]
[Prior art]
Conventionally, a typical pointer horizontal rotation instruction type instrument such as a spiral pressure gauge drives the pointer half a rotation in accordance with the pressure of the gas to be measured, and the value of the gas pressure or the like is concentric with the pointer. Indicates the measurement numerical value written in an arc shape at the position of.
[0003]
Specifically, as shown in FIG. 1, a dial 2 is provided on an upper surface of a housing 1 in the shape of a hakama of Shutokuri. A rotatable shaft center 3 of the gauge S is provided at a position corresponding to the center of the housing 1. Further, a pointer 4 is fixed to the rotatable shaft center 3, whereby the pointer 4 is rotated so that the tip of the pointer 4 indicates one point of the measured numerical value of the arc-shaped numerical display column 5. What is important here is the position of the numerical display column 5. The conventional position of the numerical display row 5 means that the center point of the circle forming the arc of the numerical display row 5 is at the same position as the position of the axis 3 described above. In other words, the circle of the numerical display column 5 and the circle drawn by the rotation of the pointer have a concentric relationship.
[0004]
More importantly, the effective measurement range of the numerical display column 5 forming the arc is 180 degrees or less, generally 120 degrees. In other words, the other parts are unused spaces that are not used. Therefore, there is a way to increase the use area of the dial 2 of the housing 1 by paying attention to and utilizing this space. As will be described later in detail, the present invention focuses on the expansion of the effective measurement range that forms the arc of the numerical display sequence 5.
[0005]
[Problems to be solved by the invention]
Thus, as with other instruments, there is a strong demand for downsizing of instruments in this field. On the other hand, there is also a very strong conflicting demand for enlarging the dial to make it easier to read the measured numerical value on the numerical display. In other words, to meet the demand for enlarging the dial is to say that the gauge must be enlarged in the conventional way. Therefore, there has been a demand for an instrument that satisfies the demand for enlarging only the numerical display portion while keeping the entire size of the measuring instrument as it is, but it has been difficult to solve the problem.
[0006]
In other words, the instrument of the type in which the pointer rotates horizontally to indicate the measured value is, as described above, the dial is parallel to the surface parallel to the rotation surface of the pointer and the center point is set on a concentric circle. Because it is. The basic configuration of the meter is that the pointer rotates and indicates the measured value. Therefore, the display of the measured numerical value of the dial is accordingly arranged in an arc on the concentric circle with the rotation axis of the hands. Therefore, the configuration of this instrument is based on a disc-shaped shape from the viewpoint of compactness and manufacturing requirements. (A box-shaped or the like simply adds another extra element such as a design to this. ). This is because the size of the dial (the fan-shaped display portion) is basically limited to within the radius of the circular instrument.
[0007]
In order to solve this problem, the pointer horizontal rotation instruction type is abolished, and some instruments are made electronic instead of mechanical. Or, even if it is mechanical, the mechanical structure is complicated, and it is changed to a hand and a fan-shaped dial, and the display of the number is a digital display with a rotary type of arrangement. ing. However, all improved instruments of this type, including these instruments, have significantly increased their cost and have created new problems in this regard.
[0008]
[Means for Solving the Problems]
Thus, the inventor of the present invention has proposed that the effective measurement range of the numerical display column on the dial is 180 degrees or less, particularly in a general 120-degree instrument, in which a pointer is provided in a spiral pressure gauge or the like. I realized that I could find a solution by moving the axis of the pointer away from the center of the circle that formed the dial without increasing the size of the dial. That is, the circular shape latent in the dial and the circular shape potential in the rotation of the hands are conventionally configured as concentric circles, as a matter of course. If this instrument is configured by conceptualizing it as being in an eccentric circle consisting of central points located separately, the effective measurement range of the dial can be expanded without changing the size of the outer shape of the instrument. That is to say.
[0009]
That is, this type of instrument is based on a "circle". Therefore, conventionally, the thinking process was restricted to the concept of "circle = 360 degrees". However, in the case of this type of conventional instrument, the effective measurement range of the numerical display sequence on the dial is 180 degrees or less, and typically 120 degrees. This means that the effective measurement range of the instrument only effectively uses less than half the area of the circle of the instrument. Therefore, by using the unused surface portion as the display place of the measured numerical value, the effective measurement range can be added to expand the range. As a result, even if the size of the instrument is the same, the effective measurement range is expanded. This is the basis of the present invention.
[0010]
In order to solve the above-mentioned problems, the instrument of the numerical value indicating type by the horizontal rotation of the pointer such as the spiral pressure gauge according to the present invention is, as described above, a circle latent in the dial and a circle latent in the rotation of the pointer. Are conceptualized as eccentric circles each having a central point located separately from each other, and the positions of the numerical display columns and the positions of the hands of the instrument are configured.
[0011]
Hereinafter, a specific configuration of a meter of a numerical value indicating type by horizontal rotation of a pointer such as a spiral pressure gauge according to the present invention will be described in detail. According to the present invention, there is provided an instrument in which an effective measurement range of a numerical display column on a dial is 180 degrees or less, firstly, a housing is provided. Next, there is a numerical display column. This numerical display column is a measurement numerical value displayed on a circumference centered around the center of the front surface of the housing, near the edge of the housing, and displayed in an arc shape on the dial. It is shown. And there is a pointer axis. The pointer axis is provided at a position located in a direction opposite to the numerical display column from a center point (an important point) of the arc of the numerical display column. In addition, there are guidelines. The pointer is connected to the pointer shaft and rotates in parallel with the dial to indicate one point of the numerical value in the numerical display sequence. Finally, there is the drive. This drive unit drives the pointer by a signal from the object to be measured.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a general embodiment of an instrument of a numerical value indicating type by horizontal rotation of a pointer such as a spiral pressure gauge according to the present invention will be described. In a gas pressure gauge in which the effective measurement range (measurement range that can be actually measured) of the numerical display column 5 described on the dial is 180 degrees or less, the numerical display column for displaying the measured value is a circular portion of the housing. Are provided on the circumference centered on the vicinity of the center and near the edge of the housing.
[0013]
Further, the pointer axis is provided at a position located in a direction opposite to the numerical display sequence from the center point of the arc of the numerical display sequence. Then, the pointer is connected to the pointer shaft, rotates in parallel with the dial, indicates one point on the scale of the numerical display column, and indicates the numerical value of the pressure.
[0014]
Specifically, a strain, which is a driving unit driven by the pressure of the gas to be measured, drives the above-mentioned pointer by a signal of gas pressure from the object to be measured. It has a through hole in this plant from which the gas to be measured is pumped. The through hole communicates with the bull hole, where the Breton tube, which also serves as the needle shaft, is rotated according to the gas pressure to indicate the pressure.
[0015]
【Example】
An instrument of a numerical value indicating type by horizontal rotation of a pointer such as a spiral pressure gauge according to the present invention will be described in detail with reference to the accompanying drawings using a gas pressure gauge as one embodiment. According to the present invention, as shown in the plan view of FIG. 2, the effective measurement range (measureable measurement range) of the numerical display column 5 described on the dial 2 is 180 degrees or less (in this embodiment, 120 degrees). First, in the gas pressure gauge S 'which is an instrument of (1), there is a housing 1 shaped like a hakama used for sake liquor. Next, there is a numerical display column 5 for displaying measured values. The numerical display column 5 is on the circumference with the center point 2a near the center of the circular portion on the front surface of the housing 1 (the black point in the figure is a virtual point indicating the center point of the circle). It is provided near the edge of the housing 1. The numerical display column 5 includes a scale 5a which is a measured numerical value displayed in an arc shape on the dial 2.
[0016]
Furthermore, there is a pointer shaft 3 '. The pointer shaft 3 'is provided at a position located in a direction opposite to the numerical display row 5 from the center point 2a of the arc of the numerical display row 5. And there is a pointer 4 '. The pointer 4 ′ is connected to the pointer shaft 3, rotates in parallel with the dial 2, and indicates one point on the scale 5 a of the numerical display row 5. In the figure, a dashed line 4a depicting an arc indicates the locus of the tip of the pointer 4 '.
[0017]
Finally, there is a strain 6 which is a driving unit driven by the pressure of the gas to be measured. The strain 6 drives the pointer 4 by a signal from an object to be measured. Specifically, as shown in the enlarged left side view of this portion shown in FIGS. 3 and 4, the strain 6 has a through hole 6a, from which gas to be measured is fed. The through hole 6a communicates with the bull hole 6b, where the Breton tube 6c serving also as the needle shaft 4 is rotated according to the gas pressure.
[0018]
Here, FIG. 3 shows the strain 6 of a conventional example, and FIG. 4 shows the strain 6 of the present invention. That is, the bull hole 6b in FIG. 3 is located at the center of the strain 6, but the one in FIG. 4 is shifted to the right with respect to the position in FIG. This difference indicates the difference in the position of the pointing shaft 3 shown in FIGS. 1 and 2 described above (in this figure, the difference in the position is shown in the front-back direction). This is very easy to understand when viewed in FIG. That is, since FIG. 5 is an overlapped illustration of FIG. 1 showing the conventional example and FIG. 2 showing the present invention, the pointer shafts 3 (conventional) and 3 ′ (the present invention) This is because the difference in the position of the parentheses is obvious.
[0019]
Thus, as is apparent from FIG. 5, in the present invention, the position of the pointer shaft 3 'is shifted from the center point 2a (see FIG. 2) in the direction opposite to the numerical display row 5. That is, in the conventional example, the position of the pointer shaft 3 is the position of the center point 2a. Therefore, in the conventional example, the effective measurement range (from 0 to full scale F) of the numerical display row 5 described on the dial 2 is the range indicated by the character A (vertical stripe portion). On the other hand, in the present invention, the range is represented by the character B (vertical stripe portion + horizontal stripe portion). Thus, even if the effective measurement range is the same 120 degrees, the range indicated by the character A of the conventional example is extended by the amount of plus alpha to the range indicated by the character B of the present invention, and the scale 5a is read by that amount. It is easier.
[0020]
Here, the fact that the range of the numerical display column 5 is expanded does not indicate that the measured value has increased. For example, in this embodiment, the full scale is represented by a number of 15 (atmospheric pressure), but this does not mean that this number increases to 20 (atmospheric pressure). A full scale of 15 is a number of 15, which means that only the interval of the scale 5a is widened. Therefore, the scale 5a is clear and easy to read.
[0021]
【The invention's effect】
The instrument of the numerical value indicating type by the horizontal rotation of the pointer, such as the spiral pressure gauge, according to the present invention has been constructed as described above. Therefore, the above-mentioned problems have been solved and the following great effects have been achieved. In other words, the gauges of the same size were able to widen the interval between the graduations, so that not only became easier to read the numerical values, but also the dial was neat and excellent in design.
[0022]
In addition, since most of the conventional forms such as molds can be used as they are, their production costs are different from digital instruments, etc. It became useful.
[Brief description of the drawings]
FIG. 1 is a plan view of a conventional spiral pressure gauge.
FIG. 2 is a plan view showing one embodiment of a meter of a numerical value indicating type by horizontal rotation of a pointer such as a spiral pressure gauge according to the present invention.
FIG. 3 is a left side view of a conventional spiral pressure gauge stock.
FIG. 4 is a left side view of a spiral pressure gauge stock according to the present invention.
FIG. 5 is a plan view of a spiral pressure gauge or the like according to the present invention, which is a plan view of an instrument of a numerical value indicating type by horizontal rotation of a pointer and a plan view of a conventional spiral pressure gauge.
[Explanation of symbols]
1 Housing 2 Dial 3 Pointer shaft 3 'Pointer shaft 4 Pointer 4' Pointer 5 Numerical display row 5a Scale 6 shares

Claims (1)

In an instrument in which the effective measurement range of the numerical display column on the dial is 180 degrees or less, the housing is on a circumference centered around the center of the front surface of the housing, near the edge of the housing, and on the dial. A numerical display column indicating the measured numerical value displayed in an arc shape above, a pointer shaft provided in a position located in a direction opposite to the numerical display column from the center point of the arc of the numerical display column, and coupled to the pointer shaft A pointer that rotates in parallel with the dial and indicates one point of the numerical value in the numerical display column, and a driving unit that drives the pointer with a signal from the device under test. Numerical indication type instrument by horizontal rotation of the pointer such as a spiral pressure gauge.

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