TWI226434B - Pressure meter - Google Patents

Abstract

The object of the present invention is to provide a pressure meter capable of assuring the pressure display viewing no matter at the surface or back side of the pressure meter, so as to enable the operator to perform visual inspection without error. To solve the problem, display parts (3a) (3b) using indicators (32a) (32b) to display pressure are provided on opposite surfaces of a pressure meter body (2). The rotation directions of the indicators (32a) (32b) of the display parts (3a) (3b) are the same by viewing from the side of each display part (3a) (3b). Alternatively, the rotation directions of the indicators (32a) (32b) of the display parts (3a) (3b) are opposite by viewing from the side of each display part (3a) (3b). One of the display parts (3a) (3b) is a display part satisfying the display type of JIS specification, and the other one is preferably a display part of the display type different from the one of the display parts.

Description

1226434 (1) 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a pressure gauge. In detail, the pressure gauge can be visually confirmed with a pointer regardless of the surface and back side of the pressure gauge body. ] A conventional pressure gauge has a display portion composed of a display panel and a pointer, which is provided on only one side of the pressure gauge body (Patent Document 1). In order to prevent a reading error of the scale, such a single-sided display type pressure gauge needs to look at the display portion from the front. Generally, there are various installation conditions of pressure gauges. Basically, in order to make it easy to see the pressure gauges, the display section is arranged on the side of the working path that allows the operator to see directly. For example, as shown in FIG. 7 (a), various pressure gauges GI, G2, etc. which protrude sideways from a large number of pipes P1, P2, etc. are arranged in the factory equipment. W is able to pass through the work path S while advancing fT to confirm that the work is to endure the work. That is, the display portions G 1 a, G2a, ... are arranged toward the work path S side. However, when the operator W is working on the opposite side of the direction of the display units G 1 a, G 2 a .. of the pressure gauges GI, G 2..., He wants to check the display of the pressure gauges G 1, G 2 .. When I go to the opposite side, I ca n’t see the display, so there is such a problem. Furthermore, as shown in FIG. 7 (b), 'the work passage S will be blocked due to, for example, the piping arrangement or new installation of the work machine'.

1226434 (2) P 1, P 2 ·. When a new working path S a is provided on the opposite side of the working path S, the operator may not be able to see the display sections G of the pressure gauges G1, G2, ... from the front. 1 a, G 2 a .. face such a problem. In this case, it is necessary to change the directions of the pressure gauges G1, G2, and so on. Since the pressure gauges are firmly screwed and fixed to the installation pipe, changing the direction is not an easy operation. Especially in the case of outdoor exposure to wind and rain, it may not be able to rotate due to rust. Generally, a belt for adjusting the direction is often wound around the mounting bolt portion, and the current state is changed to change the direction. Rotation is extremely difficult. This situation is even worse in the case of huge plant equipment where the orientation of a very large number of pressure gauges must be changed. In the case where the display is not checked by turning the direction of the pressure gauge, it has been considered to use an unreasonable posture to turn the display toward the display portion or use a device with a mirror at the front for confirmation. However, in this case, the pointer indicates There will be a large error in reading the scale, or the wrong direction of the pointer will cause the wrong reading of the pressure display. The display of the pressure gauge, for example, when the pressure gauge is installed in the piping of the working equipment, the setting of the operating conditions is an important reason. As long as there is a different scale, the operation of changing the operating conditions is required. Significant problem 0 [Patent Document 1] Japanese Patent Laid-Open Publication No. 8-6 2 0 7 [Summary of the Invention] Therefore, the object of the present invention is to provide a pressure gauge, whether in 1226434 (3) [Supplement of the pressure gauge body The pressure display can be visually confirmed on the front or back side, so that the operator who wants to perform visual confirmation will not misread the display. A first invention for solving the above-mentioned problem is a pressure gauge having a display unit for displaying pressure using a pointer on opposite sides of the pressure gauge body. The pressure gauge has a rotating shaft on which one of the pointers is mounted, and the other The rotation axis of one of the pointers and the Bourdon tube which is displaced due to the measured pressure introduced into the main body of the pressure gauge transmit the displacement of the Bourdon tube by rotating the rotation axis of one of the hands. The quantity transmission mechanism and the rotation axis of one of the pointers are transmitted between the rotation axis of one of the hands and the rotation of the other hands so that the rotation direction is opposite. A conversion mechanism to the rotation axis of the other pointer. [Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the first embodiment of the pressure gauge of the present invention, (a) is a perspective view of the pressure gauge viewed from the front side, and (b) is a perspective view of the pressure gauge viewed from the back side. Here is an example of a manometer when the measured pressure is positive. As shown in the figure, the pressure gauge 1 A is provided with display portions 3 a and 3 b composed of display plates 31 a and 31 b and pointers 32 a and 32 b on opposite sides of the pressure gauge body 2, respectively. 2 1 a and 2 1 b are transparent glass covers provided on each side of the main body 2 of the pressure gauge, and 4 is a pressure introduction part. The pressure gauge of this first embodiment] A, shown in Fig. (A), winter 1226434 (4)

On the side of the display part 3a, the pointer 32a responds to the measured pressure introduced from the pressure introduction part 4, and rotates clockwise on the surface of the display panel 3 1 a to perform pressure display. b) On the side of the display portion 3b shown, the pointer 32b displays the pressure by rotating the surface of the display panel 3 1 b in the same clockwise direction in response to the measured pressure introduced from the pressure introduction portion 4. Fig. 2 is an exploded perspective view showing an example of the internal structure of the pressure gauge 1A. In the figure, 5 is a Bourdon tube in which one end is fixed to the pressure introduction part 4 and the measured pressure is introduced from the pressure introduction part 4 into the interior, and 6 is a displacement of the tip of the Bourdon tube 5 by changing the rotation angle. Transmission mechanism to the pointers 3 2a, 3 2b. In FIG. 2, the glass covers 2 1 a and 2 1 b and the housing portion of the pressure gauge body 2 are omitted. The transmission mechanism 6 is provided with two seat plates 6 1 a and 6 1 b provided in the pressure introduction part 4, a connecting rod 62 at one end of which is rotatably attached to the front end of the Bourdon tube 5, and a part of which is rotatable. A sector gear 63 which is mounted on the other end of the link 62 and has a rotation shaft disposed between the seat plates 6 1 a and 6 1 b, meshes with the sector gear 63 and allows one end portion 64 a of the rotation shaft to move from the display portion 3 a The display board 3 1 a protrudes in the center to fix the pinion 6 4 of the pointer 3 2 a, and the pillar 6 6 installed between the pinion 6 4 and the seat plate 6 1 a, 6] b. When viewed from the side of the portion 3a, the coil spring 65 that urges the pinion 64 in the counterclockwise direction is urged. The other end 64b of the rotation shaft of the pinion gear 64 projects further from the seat plate 61b, and a conversion mechanism 7 for changing the rotation direction of the pinion gear 64 to the opposite direction is provided at the front end. This conversion mechanism 7 is provided with a rotation mounted on a pinion 64

1226434 (5) the first pinion 7 1 on the other end 64b of the shaft, the second pinion 7 2 arranged to face the first pinion 7 1, and the first pinion 7 1 and the second pinion The crown gear 7 3, the second pinion 72, and the crown gear 73 of the gear 72 are respectively mounted on the seat plate 8 and are provided in the pressure introduction portion 4. One end 7 2 a of the rotation axis of the second pinion 72 is a pointer 32b protruding from the center of the display panel 3 1 b of the display portion 3 b on the back side of the pressure gauge body 2. Next, for the pressure gauge 1 The operation of A will be described. When the measured pressure is introduced from the pressure introduction part 4 into the Bordon tube 5, the displacement tomb at the front end will be converted into the rotation of the pinion 64 by the sector gear 6 3 of the transmission mechanism 6. The pointer 3 2 a of the display portion 3 a mounted on the surface side of one end 6 4 a of the rotating shaft of the pinion 64 is turned clockwise to display the pressure corresponding to the measured pressure. At the same time, the rotation of the pinion 64 causes the first pinion 71 of the conversion mechanism 7 provided at the other end 64b of the rotation shaft to rotate, and is transmitted to the first pinion 72 by the crown gear 73 meshing therewith. The rotation direction of the first pinion 7 2 is converted to the direction opposite to the first pinion 7 1 by the crown gear 7 3, and one end 7 2 a of the rotation shaft mounted on the second pinion 7 2 The pointer 32b of the display portion 3b on the rear side is turned in a clockwise direction when viewed from the display portion 3b side to display the same pressure as the pointer 3 2a of the display portion 3a. Therefore, the pressure gauge] A, regardless of It can be confirmed from the front or the back by visual pointers 3 2 a, 3 2 b, so it is not necessary to make the operator on the opposite side of the display to turn to the display 1226434 (6) 93 in order to confirm the pressure display as in the traditional way. ία-Year, month, and month corrections are added to the display side. In addition, since the hands 3 2 a and 3 2 b are turned in the clockwise direction as viewed from the respective display portions 3 a and 3 b, the pressure display can be performed as determined by JIS B7505. The conversion mechanism 7 'may also use a bevel gear instead of the first pinion 71, the second pinion 72, and the bubble wheel 73. Fig. 3 is an exploded perspective view showing an internal structure of a second embodiment of the pressure gauge of the present invention. The same structure as in Fig. 2 is assigned the same drawing number. Here, the illustrated glass covers 2a, 2a, 2b and [b] and the housing part of the pressure gauge body 2 are also omitted. The turning operation of the pointer 3 2a on the display portion 3a side due to the measured pressure is the same as that of the first embodiment described above, and a description thereof will be omitted. The pressure gauge 1B shown in this second embodiment is further extended from the seat plate 6b to the other end of the pinion 64, which is rotated by the transmission mechanism 6 in response to the amount of displacement of the Bourdon tube 5. The display panel 3 1 b of the display section 3 b protrudes, and a pointer 32 b is attached to the tip of the display panel 3 1 b. According to this second embodiment, since the conversion mechanism 7 of the first embodiment is not provided, it can be simplified, which is an advantage. However, the pressure display on the display portion 3b side is performed by rotating the pointer 32b counterclockwise. Generally, the pressure gauge for measuring positive pressure has been standardized, and the pressure is displayed by rotating the clockwise direction counterclockwise. In the second embodiment, although the specification is satisfied on the display portion 3 a side, and since the display portion 3 b rotates in the counterclockwise direction, it is outside the specification, it is necessary to allow the normal pressure display of the conventional standard 0-segment pointer to rotate. Operators will not have the illusion. when

1226434 (7) When you see the display, compared with the operator confirming the pressure display according to the scale indicated by the pointer, there is a habit of judging the pressure from the angle of the pointer. Therefore, in the pressure gauge 1 B of the second embodiment, as described below, the display type on the display portion 3 b side is different from the regular display portion 3 a side. As a result, the display portion 3 b is viewed relative to the display portion 3 b. The operator on the side can make it feel different from the display part 3 a side of the normal display, and it will pay more attention when reading the display 5. As a result, it is possible to prevent the operator from misreading the display. In a first aspect, at least one of the colors of the display panel 31b, the pointer 32b, and the housing 2 1b covering the front portion of the display portion 3b is different from the color on the display portion 3a side. By simply using different colors, the operator who sees the display section 3 b at a glance can notice that it is different from the display section 3 a side. In the second type, the display formed by the display panel 3 1 b of the display section 3 b is different from the display formed by the display panel 3 1 a of the display section 3 a. It is possible to give an impression different from the normal display of the usual habit of seeing, and let the operator notice more clearly. Use this drawing to explain. Fig. 4 (a) is an example of a display band 3 0 1 in which the display of the display panel 3 1 b is replaced with a scale or a scale is added in addition to the scale in accordance with the strength of pressure. The display band is 3 0 1. As shown in the figure, the pressure display is formed from a state where the pressure becomes larger and the width gradually becomes wider. The left and right sides of the pointer 3 2 b are the directions of increasing pressure as long as it is easy to understand. . Fig. 4 (b) is an example in which a mark 3 02 indicating the direction of rotation of the pointer 3 2 b is formed on the display panel 3 1 b. Arrows are formed between the scales -10-

The 1226434 (8) -shaped mark 3 0 2 is not limited to an arrow-shaped structure as long as it has a structure capable of displaying the direction of rotation of the pointer 32b. The number and position of the flag 3 02 are not particularly limited. Fig. 4 (C) is an example in which the pointer 32b is installed to change the direction of the installation angle of Fig. 4 (a) (b), and it is installed by changing the direction of 180 degrees so that it passes through the display panel 3 1 b. The underside turns cautiously in the direction of the counterclockwise. In this case, the scale 3 03 is also formed so that the pressure is gradually increased by rotating it counterclockwise on the lower side of the display panel 3 1 b. This display can also be formed as an example shown in FIG. 4 (a) or (b) . Figure 4 (d) shows that predetermined marks 3 04 are formed at each scale. As the pressure gradually increases, the size of each mark 3 04 becomes larger in order. In this case, each of the marks 304 may be increased in color as the pressure increases, or the colors may be different. The shape of the marks 304 is not limited to the circle shown in the figure, but may be any polygon. Fig. 5 is an exploded perspective view showing an internal structure of a third embodiment of the pressure gauge. The same structure as in FIG. 2 is assigned the same drawing number. The glass cover 21a and the housing part of the pressure gauge body 2 are not shown here. The operation of turning the pointer 3 2 a on the display portion 3 a side using the measured pressure is the same as that of the first embodiment, and description thereof is omitted. The pressure gauge shown in this third embodiment] C, the other end 64b of the pinion 64 that is rotated by the transmission mechanism 6 in response to the amount of displacement of the Bourdon tube 5 is further extended from the seat plate 61b. The center of the display panel 3] b 'mounted on the display portion 3b. Then, the display panel 3] b ′ is turned counterclockwise with the rotation of the pointer 3 2 b of the display section 3 a toward the clockwise direction -11-

1226434 (9) direction rotation. The display panel 3 1 b is formed so that the pressure is gradually increased in a clockwise direction. The glass cover 2 1 b provided on the front portion of the display panel 3] b is printed by a method such as printing. A pointer 4 is formed. Then, when the pointer 32a on the display portion 3a side indicates the state of the pressure 0, the scale 3 04 of the display panel 3 1b ′ is arranged to indicate the pressure of 0 by the pointer 400, and it is accompanied by the introduction of the measured pressure. The display panel 3b is rotated counterclockwise with the pointer 3 2 a on the display part 3 a side. As shown in FIG. 6, the pointer 400 formed on the glass cover 2 1 b can be visually confirmed at this time. Pressure display. This third embodiment is similar to the above-mentioned second embodiment in that the display pattern on the display portion 3b side is different from the regular display portion 3a side, which can promote the operator's attention. Furthermore, in this third embodiment, the display on the display portion 3b side is formed so that the pressure on the display panel 3 1 b ′ gradually increases in a clockwise direction. Since the pressure increases in the direction toward the display portion 3 a side, The regular display is the same, so the operator will not feel uncomfortable. Even if a number is formed on the display panel 3 I b ', there is no need to worry that the operator will misread it. [Effects of the Invention] According to the present invention, it is not necessary to go to the opposite side with great effort, and the pressure display can be visually confirmed regardless of the front and back sides of the pressure gauge main body, and a pressure gauge can be provided so that the operator will not misread the display. Brief description of the drawings] -12- (10) 1226434 9a 3rd amendment supplementary Figure 1 (a) is a perspective view of the first embodiment of the pressure gauge of the present invention viewed from the surface side, (b) is from Observed perspective view of the pressure gauge from the back side. Fig. 2 is an exploded perspective view showing an example of the internal structure of the pressure gauge. Fig. 3 is an exploded perspective view showing the internal structure of the second embodiment of the pressure gauge of the present invention. Figs. 4 (a) to (d) are display diagrams of display patterns of the display panel of the display section on the back side of the regular display section. Fig. 5 is an exploded perspective view showing an internal structure of a third embodiment of the pressure gauge of the present invention. Fig. 6 is a display diagram of a display section on the back side of the regular display section of the pressure gauge of the third embodiment. Fig. 7 (a) and (b) are explanatory diagrams of the installation condition of a conventional pressure gauge. [Illustration of drawing number] 1A, 1B, 1C: pressure gauge 2 ·· pressure gauge body 2 1 a, 2 1 b: glass cover 3 a, 3 b: display part 3 1 a, 3 1 b: display panel 3 2 a N 3 2b: Pointer 4 ·· Pressure introduction unit · 13-1226434 (11) 4 Ο Ο ·· Pointer

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Claims (1)

1226434 (1) Patent application scope 1 · A pressure gauge is a pressure gauge with a display part for displaying pressure using a pointer on two opposite sides of the pressure gauge body, which is characterized by: The rotation axis of the one-pointer pointer, the rotation axis of the other pointer, and the Bourdon tube that are displaced in response to the measured pressure introduced into the main body of the pressure gauge, so that one of the above-mentioned pointers The rotating shaft rotates to convey the amount of displacement of the Bourdon tube, and between the rotating shaft of one of the hands and the rotating shaft of the other hand, so that A method in which the rotation direction becomes the opposite direction 'is a conversion mechanism that transmits the rotation of the rotation axis of one of the hands to the rotation axis of the other hand. -15-