Modular assembled pressure sensor

Abstract

The utility model relates to the technical field of pressure sensors, and discloses a modular assembled pressure sensor, which comprises a front shell, a rear shell, a first fixing sleeve, a second fixing sleeve and a third fixing sleeve, the inner side of the second fixing sleeve is fixedly connected with a signal processing circuit assembly, and the inner side of the third fixing sleeve is fixedly connected with a connector assembly. The front shell and the rear shell are connected through the first fixing bolt, the first fixing sleeve and the second fixing sleeve are fixedly connected with the front shell and the rear shell through the second fixing bolt, and the front side and the rear side of the third fixing sleeve are fixedly connected with the upper portion of the front shell and the upper portion of the rear shell through the third fixing bolt. The front shell and the rear shell are convenient to disassemble, and meanwhile, the pressure chip assembly, the signal processing circuit assembly and the connector assembly can be assembled and disassembled with the front shell and the rear shell.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a modular assembled pressure sensor. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemicals, oil wells, electricity, ships, machine tools, pipelines and many other industries.

[0003] A pressure sensor is usually composed of a pressure chip component, a signal processing circuit component, a connector and a housing. In the prior art, the pressure chip component, the signal processing circuit component and the connector are generally connected together by welding, so that the pressure chip component, the signal processing circuit component and the connector become a non-detachable sensor core; then the sensor core is installed in the housing, and the packaging material is poured into the housing for filling and sealing, so that the sensor core is isolated from the external environment, and the pressure sensor package is also made into an inconvenient whole. Since the existing pressure sensors are not easy to disassemble, the pressure sensors are inconvenient to maintain and repair. Once the components inside the pressure sensor are damaged, the pressure sensor can only be replaced as a whole. It is necessary to design a modular assembled pressure sensor to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a modular assembled pressure sensor.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A modularly assembled pressure sensor comprises a front shell and a rear shell, wherein the upper and lower inner parts of the front shell and the rear shell are both provided with a snap-fitting groove, the inner middle parts of the front shell and the rear shell are both provided with a connecting cavity, the inner left and right ends of the snap-fitting groove are respectively snap-fitted and connected with the outer left and right ends of a first fixing sleeve and a second fixing sleeve, the inner side of the first fixing sleeve is fixedly connected with a pressure chip assembly, the inner side of the second fixing sleeve is fixedly connected with a signal processing circuit assembly, the inner upper parts of the front shell and the rear shell are provided with a third fixing sleeve, and the inner side of the third fixing sleeve is fixedly connected with a connector assembly; the first fixing sleeve is used to install the pressure chip assembly inside the front shell and the rear shell, the second fixing sleeve is used to install the signal processing circuit assembly inside the front shell and the rear shell, and the third fixing sleeve is used to install the connector assembly inside the front shell and the rear shell;

[0007] Through the above technical scheme, the front shell and the rear shell can be easily disassembled, and the pressure chip assembly, signal processing circuit assembly and connector assembly can be installed and disassembled with the front shell and the rear shell. When the pressure chip assembly, signal processing circuit assembly or connector assembly is damaged, it is only necessary to disassemble the damaged assembly and replace it, thereby saving the use cost. At the same time, it is convenient to connect the pressure chip assembly, signal processing circuit assembly and connector assembly, and the pressure sensor will not fail due to loose connection caused by external force impact or vibration.

[0008] Further, a first connecting plug is provided at the bottom of the pressure chip assembly, a second connecting plug is provided at the upper part of the signal processing circuit assembly, and the first connecting plug is electrically connected to the second connecting plug;

[0009] Through the above technical solution, the pressure chip component and the signal processing circuit component are electrically connected through the electrical connection of the first connecting plug and the second connecting plug.

[0010] Further, a plurality of first connecting pins are equidistantly arranged on the upper portion of the connector assembly, a second connecting pin is arranged on the bottom of the connector assembly, and the second connecting pin is electrically connected to the middle portion of the upper end of the pressure chip assembly;

[0011] Through the above technical solution, the connector assembly and the pressure chip assembly can be electrically connected through the second connecting pin, and the connection will not loosen.

[0012] Further, the inner bottom of the front housing and the rear housing are fixedly connected with a threaded mounting head, the upper, lower, left and right ends of the front side of the front housing are each provided with a first mounting hole, the inside of each of the first mounting holes is provided with a first fixing bolt, and the front housing and the rear housing are fixedly connected by four first fixing bolts;

[0013] Through the above technical solution, the front housing and the rear housing are fixedly connected by the first fixing bolt, which facilitates the installation and disassembly of the front housing and the rear housing.

[0014] Further, the front housing and the rear housing are provided with mounting protrusions at four corners, the mounting protrusions are provided with threaded holes inside, the upper ends of the front housing and the rear housing are provided with second mounting holes on the left and right sides, and the inner sides of the second mounting holes are provided with second fixing bolts;

[0015] Through the above technical solution, the first fixing sleeve and the second fixing sleeve are fixedly connected to the front shell and the rear shell by the second fixing bolt, which facilitates fixing the first fixing sleeve and the second fixing sleeve inside the front shell and the rear shell, and at the same time enables the pressure chip assembly and the signal processing circuit assembly to be installed and disassembled.

[0016] Further, the outer upper parts of the front housing and the rear housing are each provided with a third mounting hole, the inner sides of the third mounting holes are each provided with a third fixing bolt, and the third fixing bolts fix the front and rear sides of the third fixing sleeve to the inner upper parts of the front housing and the rear housing;

[0017] Through the above technical solution, the front and rear sides of the third fixing sleeve are fixedly connected to the inner upper parts of the front shell and the rear shell by the third fixing bolt, which facilitates the installation and disassembly of the third fixing sleeve and can fix the connector assembly inside the front shell and the rear shell.

[0018] Furthermore, the front housing and the rear housing are both made of PC plastic;

[0019] Through the above technical solution, the PC plastic material has good impact strength, deformation resistance, aging resistance and flame retardancy, and can ensure that the internal structures of the front shell and the rear shell are not damaged.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, the pressure chip assembly, the signal processing circuit assembly and the connector assembly are firstly installed on the inner sides of the first fixing sleeve, the second fixing sleeve and the third fixing sleeve respectively, and then the first fixing sleeve and the pressure chip assembly, the second fixing sleeve and the signal processing circuit assembly are respectively placed in the snap-fit ​​grooves provided on the inner side of the rear shell body for snap-fitting, and the first connecting plug and the second connecting plug on the pressure chip assembly and the signal processing circuit assembly are connected in the connecting cavity, and then the third fixing sleeve and the connector assembly are placed above the pressure chip assembly, so that the second connecting pin at the bottom of the connector assembly is inserted into the middle part of the upper end of the pressure chip assembly, and finally the front shell body and the rear shell body are connected by the first fixing bolt, and the first fixing bolt is used to fix the front shell body and the rear shell body. The third fixing bolt fixes the front and rear sides of the third fixing sleeve to the upper part of the front shell and the rear shell, and the first fixing sleeve and the second fixing sleeve are fixedly connected to the front shell and the rear shell by the second fixing bolt, which facilitates the disassembly of the front shell and the rear shell, and at the same time enables the pressure chip assembly, the signal processing circuit assembly and the connector assembly to be installed and disassembled with the front shell and the rear shell. When the pressure chip assembly, the signal processing circuit assembly or the connector assembly is damaged, only the damaged assembly needs to be disassembled and replaced, which saves the use cost and facilitates the connection between the pressure chip assembly, the signal processing circuit assembly and the connector assembly. The pressure sensor will not fail due to loose connection caused by external force impact or vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front three-dimensional structure of a modular assembled pressure sensor proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the structural decomposition of the front housing and the rear housing of a modularly assembled pressure sensor proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the front housing and the rear housing of a modularly assembled pressure sensor proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a pressure chip assembly of a modularly assembled pressure sensor proposed by the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a signal processing circuit component of a modularly assembled pressure sensor proposed by the utility model;

[0027] Figure 6 This is a schematic structural diagram of a connector assembly of a modularly assembled pressure sensor proposed by the utility model.

[0028] Legend:

[0029] 1. Front shell; 2. Rear shell; 3. Engagement groove; 4. Connecting cavity; 5. First fixing sleeve; 6. Pressure chip assembly; 7. First connecting plug; 8. Second fixing sleeve; 9. Signal processing circuit assembly; 10. Second connecting plug; 11. Third fixing sleeve; 12. Connector assembly; 13. Threaded mounting head; 14. First mounting hole; 15. First fixing bolt; 16. Mounting bump; 17. Second mounting hole; 18. Threaded hole; 19. Second fixing bolt; 20. Third mounting hole; 21. Third fixing bolt; 22. First connecting column; 23. Second connecting column. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-6 The utility model provides an embodiment: a modular assembled pressure sensor, comprising a front shell 1 and a rear shell 2, wherein the upper and lower inner parts of the front shell 1 and the rear shell 2 are both provided with a snap-fitting groove 3, and the middle inner parts of the front shell 1 and the rear shell 2 are both provided with a connecting cavity 4, and the inner left and right ends of the snap-fitting groove 3 are respectively snap-fitted and connected with the outer left and right ends of the first fixing sleeve 5 and the second fixing sleeve 8, and the inner side of the first fixing sleeve 5 is fixedly connected with a pressure chip assembly 6, and the inner side of the second fixing sleeve 8 is fixedly connected with a signal processing circuit assembly 9, and the inner upper part of the front shell 1 and the rear shell 2 is provided with a third fixing sleeve 11, and the inner side of the third fixing sleeve 11 is fixedly connected with a connector assembly 12; the first fixing sleeve 5 is used to install the pressure chip assembly 6 inside the front shell 1 and the rear shell 2, the second fixing sleeve 8 is used to install the signal processing circuit assembly 9 inside the front shell 1 and the rear shell 2, and the third fixing sleeve 11 is used to install the connector assembly 12 inside the front shell 1 and the rear shell 2.

[0032] A first connecting plug 7 is provided at the bottom of the pressure chip assembly 6, and a second connecting plug 10 is provided at the upper part of the signal processing circuit assembly 9. The first connecting plug 7 and the second connecting plug 10 are electrically connected. The pressure chip assembly 6 and the signal processing circuit assembly 9 are electrically connected through the electrical connection between the first connecting plug 7 and the second connecting plug 10. A plurality of first connecting pins 22 are equidistantly provided at the upper part of the connector assembly 12, and a second connecting pin 23 is provided at the bottom of the connector assembly 12. The second connecting pin 23 is electrically connected to the middle part of the upper end of the pressure chip assembly 6. The connector assembly 12 can be electrically connected to the pressure chip assembly 6 through the second connecting pin 23, and the connection will not be loose.

[0033] A threaded mounting head 13 is fixedly connected to the inner bottom of the front shell 1 and the rear shell 2, and a first mounting hole 14 is provided at the upper, lower, left and right ends of the front side of the front shell 1, and a first fixing bolt 15 is provided inside the first mounting hole 14. The front shell 1 and the rear shell 2 are fixedly connected by four first fixing bolts 15, and the front shell 1 and the rear shell 2 are fixedly connected by the first fixing bolts 15, which is convenient for the installation and disassembly of the front shell 1 and the rear shell 2. Mounting protrusions 16 are provided at the four corners inside the front shell 1 and the rear shell 2, and threaded holes 18 are provided inside the mounting protrusions 16. Second mounting holes 17 are provided on the left and right sides of the upper ends of the front shell 1 and the rear shell 2, and second fixing bolts 19 are provided on the inner sides of the second mounting holes 17. The first fixing sleeve 5 and the second fixing sleeve 8 are fixedly connected to the front shell 1 and the rear shell 2 by the second fixing bolts 19, which is convenient for the first fixing sleeve 5 and the second fixing sleeve 8 is fixed to the inside of the front shell 1 and the rear shell 2, and the pressure chip component 6 and the signal processing circuit component 9 can be installed and removed. The outer upper part of the front shell 1 and the rear shell 2 is provided with a third mounting hole 20, and the inner side of the third mounting hole 20 is provided with a third fixing bolt 21. The third fixing bolt 21 fixes the front and rear sides of the third fixing sleeve 11 to the inner upper part of the front shell 1 and the rear shell 2. The front and rear sides of the third fixing sleeve 11 are fixedly connected to the inner upper part of the front shell 1 and the rear shell 2 by the third fixing bolt 21, which is convenient for the installation and removal of the third fixing sleeve 11, and the connector component 12 can be fixed to the inside of the front shell 1 and the rear shell 2. The front shell 1 and the rear shell 2 are both made of PC plastic material. The PC plastic material has good impact strength, deformation resistance, aging resistance and flame retardancy, and can ensure that the internal structure of the front shell 1 and the rear shell 2 is not damaged.

[0034] Working principle: First, install the pressure chip assembly 6, the signal processing circuit assembly 9 and the connector assembly 12 on the inner sides of the first fixing sleeve 5, the second fixing sleeve 8 and the third fixing sleeve 11 respectively, and then place the first fixing sleeve 5 and the pressure chip assembly 6, the second fixing sleeve 8 and the signal processing circuit assembly 9 in the snap-fit ​​groove 3 set on the inner side of the rear shell 2 respectively, and connect the first connecting plug 7 and the second connecting plug 10 on the pressure chip assembly 6 and the signal processing circuit assembly 9 in the connecting cavity 4, then place the third fixing sleeve 11 and the connector assembly 12 above the pressure chip assembly 6, so that the second connecting pin 23 at the bottom of the connector assembly 12 is inserted into the middle of the upper end of the pressure chip assembly 6, and finally connect the front shell 1 and the rear shell 2 by the first fixing bolt 15, and fix the front and rear sides of the third fixing sleeve 11 to the upper part of the front shell 1 and the rear shell 2 by the third fixing bolt 21, and fix the first fixing sleeve 5 and the second fixing sleeve 8 to the front shell 1 and the rear shell 2 by the second fixing bolt 19.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular pressure sensor, comprising a front housing (1) and a rear housing (2), characterized in that: The upper and lower parts of the inner sides of the front shell (1) and the rear shell (2) are both provided with a snap-fitting groove (3); the middle parts of the inner sides of the front shell (1) and the rear shell (2) are both provided with a connecting cavity (4); the inner left and right ends of the snap-fitting groove (3) are respectively snap-fitted and connected with the outer left and right ends of the first fixing sleeve (5) and the second fixing sleeve (8); the inner side of the first fixing sleeve (5) is fixedly connected with a pressure chip assembly (6); the inner side of the second fixing sleeve (8) is fixedly connected with a signal processing circuit assembly (9); the inner upper parts of the front shell (1) and the rear shell (2) are provided with a third fixing sleeve (11); the inner side of the third fixing sleeve (11) is fixedly connected with a connector assembly (12); The first fixing sleeve (5) is used to install the pressure chip assembly (6) inside the front shell (1) and the rear shell (2), the second fixing sleeve (8) is used to install the signal processing circuit assembly (9) inside the front shell (1) and the rear shell (2), and the third fixing sleeve (11) is used to install the connector assembly (12) inside the front shell (1) and the rear shell (2).

2. A modular pressure sensor according to claim 1, characterized in that: A first connecting plug (7) is arranged at the bottom of the pressure chip component (6), and a second connecting plug (10) is arranged at the top of the signal processing circuit component (9), and the first connecting plug (7) and the second connecting plug (10) are electrically connected.

3. The modular pressure sensor according to claim 1, characterized in that: A plurality of first connecting pins (22) are equidistantly arranged on the upper portion of the connector component (12), and a second connecting pin (23) is arranged on the bottom portion of the connector component (12), wherein the second connecting pin (23) is electrically connected to the middle portion of the upper end of the pressure chip component (6).

4. The modular pressure sensor according to claim 1, characterized in that: The inner bottoms of the front housing (1) and the rear housing (2) are fixedly connected with threaded mounting heads (13); the front upper, lower, left and right ends of the front side of the front housing (1) are each provided with a first mounting hole (14); the interiors of the first mounting holes (14) are each provided with a first fixing bolt (15); the front housing (1) and the rear housing (2) are fixedly connected via four first fixing bolts (15).

5. The modular pressure sensor according to claim 1, characterized in that: The front housing (1) and the rear housing (2) are each provided with mounting protrusions (16) at the four corners thereof, the mounting protrusions (16) are each provided with threaded holes (18) therein, the upper ends of the front housing (1) and the rear housing (2) are each provided with second mounting holes (17) on the left and right sides thereof, and the inner sides of the second mounting holes (17) are each provided with second fixing bolts (19).

6. The modular pressure sensor according to claim 1, characterized in that: The outer upper parts of the front housing (1) and the rear housing (2) are both provided with third mounting holes (20), and the inner sides of the third mounting holes (20) are both provided with third fixing bolts (21), and the third fixing bolts (21) fix the front and rear sides of the third fixing sleeve (11) to the inner upper parts of the front housing (1) and the rear housing (2).

7. The modular pressure sensor according to claim 1, characterized in that: The front housing (1) and the rear housing (2) are both made of PC plastic.

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