Digital display type pressure gauge

Abstract

The utility model relates to a digital display type pressure gauge which comprises a shell, a measuring module and a processing module are arranged in the shell, the measuring module is used for measuring medium pressure, the processing module is electrically connected with the measuring module, the input end of the processing module is used for receiving a detection signal of the measuring module, and the output end of the processing module is electrically connected with the processing module. The received detection signal is processed, and then a pressure value is output; the shell comprises a base and an outer shell, a power supply interface is arranged on the base, the power supply input ends of the measuring module and the processing module are arranged on the power supply interface, an assembling seat is arranged in the shell, and the processing module and the measuring module are respectively arranged on two sides of the assembling seat. The shell has the advantages that the overall size of the shell is reduced, the structure is more compact and small, the internal structure is optimized, the structural layout is more reasonable, and meanwhile the structural cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of pressure gauges, and in particular to a digital pressure gauge. Background Technology

[0002] Currently, digital pressure gauges (also known as digital pressure gauges) are measuring instruments that use electronic sensor technology to directly display pressure values ​​on a digital display screen. Their principle is as follows: the pressure of the measured medium is transmitted to the pressure-sensing diaphragm of the sensor through a pressure interface. The sensor amplifies the sensed electrical signal, performs a V / A conversion, and sends it to the CPU for processing. The CPU then sets the digital display, controls the switch output, and provides analog or digital outputs, thereby realizing the process of pressure display, control, and transmission.

[0003] Patent CN221612295U discloses a digital pressure gauge, including a measurement module, a processing module, a battery module, a front shell, a middle shell, and a rear shell. The measurement module is used to measure the pressure of the medium, the processing module is used to process the measurement information from the measurement module, and the processing module is connected to the measurement module. The battery module is used to provide power to the digital pressure gauge. A fixing post is provided on the rear end face of the front shell, and at least part of the processing module is located inside the middle shell. When the front shell, middle shell, and rear shell are assembled, the fixing post at least partially passes through the middle shell and is fixedly connected to the rear shell. The assembly and fixation by the fixing post provided on the front shell simplifies the installation process and improves assembly efficiency.

[0004] For the aforementioned digital pressure gauge, the battery module requires a large amount of space inside the digital pressure gauge, resulting in a relatively large and bulky overall structure that is not compact enough, thus increasing the structural cost. Utility Model Content

[0005] This application provides a digital pressure gauge that is compact, easy to assemble, and reduces structural costs.

[0006] The digital pressure gauge provided in this application adopts the following technical solution:

[0007] A digital pressure gauge includes a housing, within which a measuring module and a processing module are disposed. The measuring module is used to measure the pressure of a medium. The processing module is electrically connected to the measuring module, and its input terminal is used to receive the detection signal from the measuring module, process the received detection signal, and output a pressure value. The housing includes a base and an outer shell. A power supply interface is disposed on the base, and the power input terminals of the measuring module and the processing module are disposed on the power supply interface. An assembly base is disposed within the housing, and the processing module and the measuring module are respectively mounted on both sides of the assembly base.

[0008] Preferably, a limiting groove is provided on the side wall of the assembly base facing the processing module, and the processing module is limited within the limiting groove.

[0009] Preferably, the assembly base has a through-hole, and the measuring module is provided with a connector, which is inserted and limited within the connector slot.

[0010] Preferably, the assembly base has multiple clearance holes, and the electrical components on the measuring module are respectively disposed in the corresponding clearance holes.

[0011] Preferably, the base is provided with an air nozzle, the exhaust port of the air nozzle is connected to the detection port of the measurement module; a first sealing ring is coaxially arranged inside the air nozzle, which abuts against and seals against the detection port surface of the measurement module.

[0012] Preferably, the base has through-holes.

[0013] Preferably, a snap-fit ​​element is provided on the outer side wall of the base, and a snap-fit ​​hole is provided on the outer shell to snap and fix it to the snap-fit ​​element; the outer shell is sleeved on the outside of the base, and the outer shell and the base are snapped and fixed to each other by the snap-fit ​​element and the snap-fit ​​hole.

[0014] Preferably, a second sealing ring is provided on the outer side wall of the base, and the second sealing ring abuts against the inner side wall of the outer shell for sealing.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] The bottom of the base is equipped with a power supply interface. The power input terminals of the measurement module and the processing module are located on the power supply interface. The external power cable is connected to the power supply interface through a male connector to achieve power supply. Compared with battery module power supply, the overall volume of the shell is reduced, and the structure is more compact and small.

[0017] By limiting and fixing the processing module in the limiting groove, and the measuring module being plugged into and limited in the plug slot through the plug socket, with the plug socket and plug slot having an interference fit, the processing module and the measuring module can be installed and fixed on both sides of the assembly base respectively. The installation is convenient and quick, the internal structure is optimized, the structural layout is more reasonable, and the structural cost is reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0019] Figure 2 yes Figure 1 Schematic diagram of a partial structural explosion;

[0020] Figure 3 yes Figure 2A schematic diagram of a localized explosion from another perspective;

[0021] Figure 4 yes Figure 1 A schematic diagram of the overall structure from the bottom view.

[0022] Explanation of reference numerals in the attached drawings: 1. Housing; 10. Base; 11. Outer shell; 12. Power supply interface; 13. Air vent; 14. Snap-fit ​​component; 15. Snap-fit ​​hole; 16. Second sealing ring; 2. Measuring module; 20. Plug-in socket; 3. Processing module; 4. Assembly base; 40. Limiting groove; 41. Plug-in groove; 42. Clearance hole; 5. Air nozzle; 50. First sealing ring. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] This application discloses a digital pressure gauge.

[0025] Reference Figure 1 , Figure 2 The digital pressure gauge includes a housing 1, within which a measurement module 2 and a processing module 3 are installed. The measurement module 2 includes a pressure sensor, the pressure-sensing surface of which is connected to or communicates with the measured medium via a pressure-sensing tube or other pressure transmission channel. The pressure of the measured medium is transmitted to the pressure sensor, which measures the medium pressure and generates a detection signal. In some cases, the measurement module 2 may also include an analog-to-digital converter circuit, with the signal output terminal of the pressure sensor connected to the signal input terminal of the analog-to-digital converter circuit. The analog-to-digital converter circuit performs analog-to-digital conversion on the sensor signal and outputs the measurement information from its signal output terminal. In some cases, the measurement module 2 may also include an amplifier circuit or other conditioning circuits. The measurement module 2 can realize the conversion of pressure quantity into information quantity.

[0026] The processing module 3 is electrically connected to the measurement module 2. The input terminal of the processing module 3 receives the detection signal from the measurement module 2, processes the received signal, and outputs the pressure value. The processing module 3 may include electronic components with information processing capabilities, such as a processor or microcontroller. In some cases, the processing module 3 may also include a memory to store an executable program, allowing the processing module 3 to process the measurement information from the measurement module 2 according to the executable program. In some cases, the processing module 3 may also include a clock circuit to provide a clock signal, enabling the processing module 3 to periodically process the measurement information from the measurement module 2 according to the clock signal. In some cases, the processing module 3 may be encapsulated as a single unit in a housing. In other cases, the processing module 3 may include a circuit board with related electronic components and circuitry mounted on it. The processing module 3 also includes an electronic display screen to display the detected pressure value.

[0027] like Figure 2 , Figure 3 As shown, the housing 1 includes a base 10 and an outer shell 11. A snap-fit ​​member 14 is integrally formed on the outer wall of the base 10, and the snap-fit ​​members 14 are symmetrically arranged on both sides of the base 10. The outer shell 11 has through-holes 15 corresponding to the snap-fit ​​members 14, and the snap-fit ​​members 14 are used to snap and fix themselves to their respective corresponding snap-fit ​​holes 15. The outer shell 11 is fitted over the base 10, and the outer shell 11 and the base 10 are snapped and fixed together by the snap-fit ​​members 14 and the snap-fit ​​holes 15. A second sealing ring 16 is fixedly fitted on the outer wall of the base 10, and the second sealing ring 16 abuts against the inner wall of the outer shell 11 for sealing.

[0028] like Figure 3 , Figure 4 As shown, a power supply interface 12 is provided at the bottom of the base 10. The power input terminals of the measurement module 2 and the processing module 3 are located on the power supply interface 12. The external power cable is connected and fixed to the power supply interface 12 through a male connector, thereby realizing power supply.

[0029] like Figure 2 , Figure 3 As shown, an assembly base 4 is provided inside the housing 1, and the processing module 3 and the measuring module 2 are respectively installed on both sides of the assembly base 4. A limiting groove 40 is provided on the side wall of the assembly base 4 facing the processing module 3, and the processing module 3 is limited and fixed within the limiting groove 40. A through-hole groove 41 is also provided on the assembly base 4, and a through-hole socket 20 is fixedly provided on the measuring module 2. The through-hole socket 20 is inserted and limited within the through-hole groove 41, and the through-hole socket 20 and the through-hole groove 41 are interference-fitted. Multiple clearance holes 42 are also provided on the assembly base 4, and the electrical components on the measuring module 2 are respectively installed in the corresponding clearance holes 42. The assembly base 4 prevents direct contact between the processing module 3 and the measuring module 2, while also providing support and fixation for the processing module 3 and the measuring module 2.

[0030] like Figure 3 , Figure 4 As shown, an air nozzle 5 is fixedly installed on the base 10, and the exhaust port of the air nozzle 5 is connected to the pressure detection port of the measuring module 2. A first sealing ring 50 is coaxially arranged inside the air nozzle 5, which abuts against the detection port surface of the measuring module 2 for sealing. When external airflow enters the air nozzle 5, the pressure detection port of the measuring module 2 can detect the input airflow pressure. The first sealing ring 50 ensures the airtightness between the exhaust port of the air nozzle 5 and the detection port surface of the measuring module 2, guaranteeing the accuracy of the detection data. An air hole 13 is provided through the base 10, which ensures that the internal air pressure of the base 10 remains balanced with the external atmospheric pressure, thereby reducing interference to the detection results.

[0031] The implementation principle is as follows: A power supply interface 12 is provided at the bottom of the base 10. The power input terminals of the measurement module 2 and the processing module 3 are set on the power supply interface 12. The external power cord is connected and fixed to the power supply interface 12 through a male plug, thereby realizing power supply. Compared with battery module power supply, the overall volume of the housing 1 is reduced, and the structure is more compact and small. During installation, the processing module 3 is fixed in the limiting groove 40, and the measurement module 2 is fixed in the plug groove 41 through the plug socket 20. The plug socket 20 and the plug groove 41 are interference fit, so the processing module 3 and the measurement module 2 can be installed and fixed on both sides of the assembly base 4 respectively. The installation is convenient and quick, the internal structure is optimized, the structural layout is more reasonable, and the structural cost is reduced.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A digital pressure gauge, comprising a housing (1), characterized in that: The housing (1) is provided with a measurement module (2) and a processing module (3). The measurement module (2) is used to measure the pressure of the medium. The processing module (3) is electrically connected to the measurement module (2). The input end of the processing module (3) is used to receive the detection signal from the measurement module (2) and then process the received detection signal to output the pressure value. The housing (1) includes a base (10) and an outer shell (11). The base (10) is provided with a power supply interface (12). The power input ends of the measurement module (2) and the processing module (3) are provided on the power supply interface (12). The housing (1) is provided with an assembly base (4). The processing module (3) and the measurement module (2) are respectively installed on both sides of the assembly base (4).

2. The digital pressure gauge according to claim 1, characterized in that: The assembly base (4) has a limiting groove (40) on its side wall facing the processing module (3), and the processing module (3) is limited within the limiting groove (40).

3. The digital pressure gauge according to claim 2, characterized in that: The assembly base (4) has a through-hole groove (41), and the measuring module (2) is provided with a plug-in seat (20), which is inserted and limited within the plug-in groove (41).

4. The digital pressure gauge according to claim 3, characterized in that: The assembly base (4) has multiple clearance holes (42) through it, and the electrical components on the measuring module (2) are respectively set in the corresponding clearance holes (42).

5. The digital pressure gauge according to claim 1, characterized in that: An air nozzle (5) is provided on the base (10), and the exhaust port of the air nozzle (5) is connected to the detection port of the measurement module (2); a first sealing ring (50) is provided coaxially inside the air nozzle (5) and is in contact with and seals the detection port surface of the measurement module (2).

6. The digital pressure gauge according to claim 5, characterized in that: The base (10) has a through-hole (13).

7. The digital pressure gauge according to claim 1, characterized in that: A snap-fit ​​element (14) is provided on the outer side wall of the base (10), and a snap-fit ​​hole (15) is provided on the outer shell (11) to be snapped and fixed to the snap-fit ​​element (14); the outer shell (11) is sleeved on the outside of the base (10), and the outer shell (11) and the base (10) are snapped and fixed to each other by the snap-fit ​​element (14) and the snap-fit ​​hole (15).

8. The digital pressure gauge according to claim 7, characterized in that: A second sealing ring (16) is provided on the outer side wall of the base (10), and the second sealing ring (16) abuts against the inner side wall of the outer shell (11) to seal against each other.

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