Diaphragm type pressure gauge

Abstract

The utility model discloses a diaphragm type pressure gauge which comprises a pointer, a dial plate, a movement assembly, a transmission assembly and a diaphragm, the pointer is arranged on the dial plate and connected with the movement assembly in a drivable mode, the diaphragm is carried on a base, the transmission assembly comprises a top column, a rotating shaft, a connecting rod and a swing rod, the top column is arranged on the diaphragm, and the rotating shaft is connected with the connecting rod. The rotating shaft is transversely arranged between the diaphragm and the machine core assembly, one end of the connecting rod is connected with the top column, the other end of the connecting rod is connected with the rotating shaft, and the swing rod extends upwards from the rotating shaft and is drivably connected with the machine core assembly. Through mutual transmission among the diaphragm, the support pillar, the connecting rod, the rotating shaft and the swing rod, the sector blade and the shaft gear are driven to rotate, so that the pointer is deflected, and through the transmission mechanism, the internal structure of the pressure gauge is simplified, and the manufacturing process and cost are effectively reduced; in addition, by adopting a double-clamping-plate structure, the movement between the machine core assembly and the transmission assembly is more stable and accurate.

Description

Technical Field

[0001] The present application relates to the technical field of pressure gauges, and more specifically, to a diaphragm pressure gauge. Background Art

[0002] A diaphragm pressure gauge is a commonly used instrument for measuring fluid (gas or liquid) pressure. It senses pressure changes through an elastic diaphragm and converts these changes into displacement of a pointer on a dial, which displays the pressure value. Diaphragm pressure gauges offer advantages such as simple structure, low cost, and ease of use. Therefore, they are widely used in industrial production, laboratory research, and daily life.

[0003] However, the internal structure and manufacturing process of the current diaphragm pressure gauge are relatively complex, which not only makes it difficult to manufacture and maintain but also has high cost. Utility Model Content

[0004] The present application is proposed to address the above-mentioned technical problems. The advantages of the present application are that it provides a diaphragm-type pressure gauge that, through the mutual transmission between the diaphragm, top column, connecting rod, rotating shaft, and rocker arm, drives the sector gear and shaft gear to rotate, thereby causing the pointer to deflect. By using this transmission mechanism, the internal structure of the pressure gauge is simplified, effectively reducing the manufacturing process and cost. In addition, the use of a double-plate structure makes the movement between the movement assembly and the transmission assembly more stable and precise.

[0005] To achieve at least one of the above advantages, the present application provides a diaphragm pressure gauge, comprising a connected case and a base, wherein the case is provided with a pointer, a dial, a movement assembly, a transmission assembly and a diaphragm in sequence from top to bottom, the pointer is arranged on the dial and is drivably connected to the movement assembly, the diaphragm is mounted on the base, the transmission assembly comprises a top column, a rotating shaft, a connecting rod and a rocker arm, the top column is arranged on the diaphragm, the rotating shaft is transversely arranged between the diaphragm and the movement assembly, one end of the connecting rod is connected to the top column, and the other end is connected to the rotating shaft, and the rocker arm extends upward from the rotating shaft and is drivably connected to the movement assembly.

[0006] In the above-mentioned diaphragm pressure gauge, the movement assembly includes an upper plate and a lower plate, and the upper plate and the lower plate are connected by a column to form an accommodating space between the two plates. A fan gear assembly and a shaft gear assembly are provided in the accommodating space, and one end of the shaft gear assembly is drivably connected to the pointer. The fan gear assembly includes a fan gear plate and a fixed column, and the fixed column is fixed between the upper plate and the lower plate. The front end arc edge of the fan gear plate is provided with gear teeth, and the gear teeth are engaged with the shaft gear assembly. The rear end of the fan gear plate is rotatably connected to the fixed column, and the middle part of the fan gear plate is connected to one end of the rocker arm.

[0007] In the above-mentioned diaphragm pressure gauge, the shaft gear assembly includes a shaft gear and a hairspring, the shaft gear is meshed with the gear teeth of the sector gear, the inner ring of the multiple turns at one end of the hairspring is bonded and fixed to the lower part of the shaft gear, and the other end of the hairspring is fixed on the column in an arc shape.

[0008] In the above-mentioned diaphragm pressure gauge, two hanging parts are provided on the lower clamping plate, and the hanging parts extend downward from both ends of the lower clamping plate, and the rotating shaft is hung between the two hanging parts.

[0009] In the above-mentioned diaphragm pressure gauge, a swing groove is further provided on the lower clamping plate, and the swing rod extends from the rotating shaft, passes through the swing groove and is connected to the fan gear.

[0010] Further objectives and advantages of the present application will be fully apparent through understanding of the following description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and other purposes, features, and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0012] Figure 1 The figure shows a schematic diagram of the overall structure of a diaphragm pressure gauge according to an embodiment of the present application.

[0013] Figure 2 The figure shows a schematic diagram of the internal structure of a diaphragm pressure gauge according to an embodiment of the present application.

[0014] Figure 3 The figure shows a schematic top view of the sector gear assembly and the shaft gear assembly according to an embodiment of the present application.

[0015] Figure 4 The figure shows a schematic diagram of the overall structure of a diaphragm pressure gauge according to the second embodiment of the present application.

[0016] In the picture:

[0017] Case 1; base 2; pointer 3; dial 4;

[0018] Movement assembly 5; upper plate 51; lower plate 52; hanging member 521; swing slot 522; accommodating space 50; sector gear assembly 53; sector gear piece 531; gear 5311; fixing column 532; shaft gear assembly 54; shaft gear 541; hairspring 542; column 55;

[0019] Transmission assembly 6; top column 61; rotating shaft 62; connecting rod 63; rocker 64

[0020] Diaphragm 7. DETAILED DESCRIPTION

[0021] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described herein.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] In the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms cannot be understood as limiting the present invention.

[0024] like Figures 1 to 3 The structure of a diaphragm pressure gauge according to an embodiment of the present application is illustrated in the figure. The diaphragm pressure gauge comprises a case 1 and a base 2 connected to each other. The base 2 is mounted on a device such as a pipeline and communicates with the medium to be detected. The case 1 is provided with a pointer 3, a dial, a movement assembly 5, a transmission assembly 6, and a diaphragm 7 in order from top to bottom. The pointer 3 is disposed on the dial 4 and is drivably connected to the movement assembly 5. The diaphragm 7 is mounted on the base 2.

[0025] Specifically, if Figure 2 As shown, the transmission assembly 6 includes a top column 61, a rotating shaft 62, a connecting rod 63 and a rocker arm 64. The top column 61 is arranged on the diaphragm 7, and the rotating shaft 62 is transversely arranged between the diaphragm 7 and the movement assembly 5. One end of the connecting rod 63 is connected to the top column 61, and the other end is connected to the rotating shaft 62. The rocker arm 64 extends upward from the rotating shaft 62 and is drivably connected to the movement assembly 5.

[0026] Furthermore, the movement assembly 5 includes an upper plate 51 and a lower plate 52, and the upper plate 51 and the lower plate 52 are connected by a column 55 to form a receiving space 50 between the two plates. By adopting a double-plate structure, the movement between the movement assembly 5 and the transmission assembly 6 is more stable and precise.

[0027] Preferably, two hanging members 521 are provided on the lower clamping plate 52 . The hanging members 521 extend downward from both ends of the lower clamping plate 52 , and the rotating shaft 62 is hung between the two hanging members 521 .

[0028] Specifically, if Figure 2 and Figure 3 As shown, a sector gear assembly 53 and a shaft gear assembly 54 are provided within the accommodating space 50. One end of the shaft gear assembly 54 is drivably connected to the pointer 3. The sector gear assembly 53 includes a sector gear piece 531 and a fixed post 532. The fixed post 532 is fixed between the upper and lower clamping plates 51 and 52. In particular, gear teeth 5311 are provided at the front arc edge of the sector gear piece 531. The gear teeth 5311 mesh with the shaft gear assembly 54. The rear end of the sector gear piece 531 is rotatably connected to the fixed post 532. The middle portion of the sector gear piece 531 is connected to one end of the rocker 64. In particular, a rocker slot 522 is further provided on the lower clamping plate 52. The rocker 64 extends from the rotating shaft 62, passes through the rocker slot 522, and is connected to the sector gear piece 531.

[0029] More specifically, the shaft gear assembly 54 includes a shaft gear 541 and a hairspring 542. The shaft gear 541 meshes with the gear teeth 5311 of the sector gear piece 531. The inner ring of the hairspring 542, with multiple turns at one end, is bonded and fixedly sleeved on the lower portion of the shaft gear 541. The other end of the hairspring 542 is fixedly secured to the column 55 in an arc-shaped manner. The meshing of the gear teeth 5311 and the shaft gear 541 enables the shaft gear 541 assembly 54 to rotate when the sector gear piece 531 rotates, thereby deflecting the pointer 3. Furthermore, the elasticity of the hairspring 542 allows the shaft gear 541 and the sector gear piece 531 to be reset. In this application, the hairspring 542 is directly connected to the column 55, eliminating the need for a hairspring holder, simplifying the internal structure of the pressure gauge and reducing manufacturing costs.

[0030] like Figure 4 FIG. 1 is a schematic diagram illustrating the overall structure of a diaphragm pressure gauge according to a second embodiment of the present application. The base 2 is a threadably connectable connector pipe, which is mounted on a device such as a pipeline to communicate with the medium to be detected. The base 2 may be modified based on the shape or interface properties of the mounting device and is not limited by the present application.

[0031] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

Claims

1. A diaphragm pressure gauge, comprising a connected case and a base, characterized in that: The watch case is provided with a pointer, a dial, a movement assembly, a transmission assembly and a diaphragm in sequence from top to bottom. The pointer is arranged on the dial and is drivably connected to the movement assembly. The diaphragm is mounted on the base. The transmission assembly includes a top column, a rotating shaft, a connecting rod and a rocker arm. The top column is arranged on the diaphragm. The rotating shaft is transversely arranged between the diaphragm and the movement assembly. One end of the connecting rod is connected to the top column, and the other end is connected to the rotating shaft. The rocker arm extends upward from the rotating shaft and is drivably connected to the movement assembly.

2. A diaphragm pressure gauge according to claim 1, characterized in that: The movement assembly includes an upper plate and a lower plate, and the upper plate and the lower plate are connected by a column to form an accommodating space between the two plates. A fan gear assembly and a shaft gear assembly are provided in the accommodating space, and one end of the shaft gear assembly is drivably connected to the pointer. The fan gear assembly includes a fan gear piece and a fixed column, and the fixed column is fixed between the upper plate and the lower plate. Gear teeth are provided at the front end arc edge of the fan gear piece, and the gear teeth are engaged with the shaft gear assembly. The rear end of the fan gear piece is rotatably connected to the fixed column, and the middle part of the fan gear piece is connected to one end of the rocker arm.

3. A diaphragm pressure gauge according to claim 2, characterized in that: The shaft gear assembly includes a shaft gear and a hairspring. The shaft gear is meshed with the gear teeth of the sector gear. The inner ring of the multiple-turn hairspring at one end is bonded and fixed to the lower part of the shaft gear. The other end of the hairspring is fixed on the column in an arc shape.

4. A diaphragm pressure gauge according to claim 2, characterized in that: Two hanging parts are provided on the lower clamping plate. The hanging parts extend downward from two ends of the lower clamping plate. The rotating shaft is hung between the two hanging parts.

5. A diaphragm pressure gauge according to claim 4, characterized in that: The lower splint is further provided with a swing slot, and the swing rod extends from the rotating shaft, passes through the swing slot and is connected to the fan gear piece.

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