Pressure sensor convenient to install

Abstract

The utility model relates to a pressure sensor convenient to install, which belongs to the technical field of pressure sensors and comprises a connector, adjusting and fixing mechanisms are arranged on the outer side and the bottom of the connector, each adjusting and fixing mechanism comprises a flexible circuit board fixedly installed in the connector, and a sensitive element is arranged at the bottom of each flexible circuit board. A sealing ring is arranged on the outer side of the sensitive element, a shell is movably connected to the outer sides of the flexible circuit board, the sensitive element and the sealing ring, and fixing plates attached to the top of the shell are fixedly installed on the left side and the right side of the connector correspondingly. According to the pressure sensor convenient to install, the connector is pressed in along with the lead face, the protruding part can be pressed in the annular groove in the shell, a compression amount is generated on the sealing ring, meanwhile, longitudinal displacement of the shell and the connector is limited, the positioning part of the connector is matched with the positioning groove of the shell, rotation movement of the shell and the connector is limited, and the sealing performance of the pressure sensor is improved. The current assembling mode that the shell and the connector are fixed together through riveting is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor that is easy to install. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable electrical signal outputs according to certain rules. It is usually composed of a pressure sensitive element and a signal processing unit. There are many types of pressure sensors. According to the different test pressure types, they can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. The working principle of the pressure sensor is mainly based on the piezoelectric effect, strain gauge principle, diaphragm principle and liquid column principle. For example, piezoelectric sensors use the characteristics of piezoelectric materials to generate changes in charge or voltage when subjected to pressure, thereby measuring the pressure; while strain gauge sensors use the strain characteristics of metal or semiconductor materials to infer the pressure by measuring changes in resistance or capacitance.

[0003] The sensor usually has a metal shell and an electrical connector riveted together. The ceramic capacitor is pressed by riveting force, causing the internal seal to deform and generate sealing force to ensure sealing. Excessive riveting will damage the ceramic core, and insufficient riveting will cause insufficient sealing force and leakage. Different metal materials require different riveting forces, which is relatively complicated and needs to be improved. Therefore, this application proposes another technical solution to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a pressure sensor that is easy to install, has the advantages of convenient and fast installation, fixing and disassembly, etc., and solves the problem that the sensor is usually structured in that the metal shell and the electrical connector are riveted together, and the ceramic capacitor is pressed by riveting force to deform the internal seal to generate sealing force to ensure sealing. However, excessive riveting will damage the ceramic core, and insufficient riveting will cause insufficient sealing force and leakage. Different metal materials require different riveting forces, which is relatively complicated and needs to be improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure sensor that is easy to install, comprising a connector, and an adjustment and fixing mechanism is provided on the outer side and the bottom of the connector;

[0006] The adjustment and fixing mechanism includes a flexible circuit board fixedly installed inside the connector, a sensitive element is arranged at the bottom of the flexible circuit board, a sealing ring is arranged at the outside of the sensitive element, a shell is movably connected to the outside of the flexible circuit board, the sensitive element and the sealing ring, and a fixing plate that fits the top of the shell is fixedly installed on the left and right sides of the connector, and a disassembly and assembly component is arranged inside the shell.

[0007] Furthermore, the disassembly and assembly component includes a return spring fixedly installed on the left and right sides of the shell, a movable plate is fixedly installed on one side of the return spring, and the top and bottom of the movable plate are fixedly installed with limit blocks slidably connected to the shell, and one side of the movable plate is fixedly installed with a limit pin extending to the outside of the shell, and the inner side of the limit pin is clamped with a pin fixedly connected to the fixed plate.

[0008] Furthermore, a positioning portion is provided inside the connector, and a protruding portion is provided outside the connector.

[0009] Furthermore, an annular groove is provided inside the shell, a positioning groove is provided on the top of the shell, and a lead surface is provided on the inner side of the shell.

[0010] Furthermore, the connector is pressed into the interior of the housing through the lead surface, and the connector can be pressed into the annular groove inside the housing through the protrusion.

[0011] Furthermore, the positioning portion of the connector can cooperate with the positioning groove of the housing.

[0012] Furthermore, a limiting groove is provided inside the shell, and the limiting block is slidably connected to the shell via the limiting groove.

[0013] Furthermore, the shape of the latch is L-shaped, the shape of the limit pin is U-shaped, and the limit pin and the latch are engaged with each other.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The pressure sensor, which is easy to install, can extend and retract the reset spring by means of the arranged adjustment and fixing mechanism, using the limit pin, the movable plate and the limit block, so as to conveniently drive the limit pin to extend and retract, so that the limit pin can be inserted and fixed to the latch pin or be disengaged and disassembled, so as to facilitate and quickly disassemble and assemble the docking plug and the housing, thereby greatly improving the flexibility and practicality of the device. The connector is pressed in along the lead surface, and the protrusion can be pressed into the annular groove inside the housing, thereby generating a compression amount on the sealing ring and limiting the longitudinal displacement of the housing and the connector. The positioning portion of the connector cooperates with the positioning groove of the housing, thereby limiting the rotational movement of the housing and the connector, thus replacing the current assembly method of fixing the housing and the connector together by riveting, thereby reducing the production cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional view of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure in the middle;

[0018] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0019] Figure 4 This is a schematic diagram of the housing structure of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the structure of the utility model.

[0021] In the figure: 1, connector; 2, flexible circuit board; 3, sensitive element; 4, sealing ring; 5, housing; 6, fixed plate; 7, return spring; 8, movable plate; 9, limit block; 10, limit pin; 11, latch; 102, protrusion; 101, positioning part; 501, annular groove; 502, positioning groove; 503, lead surface. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5 In this embodiment, a pressure sensor that is easy to install includes a connector 1, and an adjustment and fixing mechanism is provided on the outer side and bottom of the connector 1.

[0024] In the first embodiment, the adjusting and fixing mechanism includes a flexible circuit board 2 fixedly installed inside the connector 1, a positioning portion 101 is provided inside the connector 1, and a protrusion 102 is provided on the outside of the connector 1 to facilitate positioning, a sensitive element 3 is provided at the bottom of the flexible circuit board 2, a sealing ring 4 is provided on the outside of the sensitive element 3, and a shell 5 is movably connected to the outside of the flexible circuit board 2, the sensitive element 3 and the sealing ring 4.

[0025] Among them, an annular groove 501 is provided inside the shell 5, and a positioning groove 502 is provided on the top of the shell 5. The positioning portion 101 of the connector 1 can cooperate with the positioning groove 502 of the shell 5 to facilitate clamping and fixing. A lead surface 503 is provided on the inner side of the shell 5, and the connector 1 is pressed into the interior of the shell 5 through the lead surface 503. The connector 1 can be pressed into the annular groove 501 inside the shell 5 through the protrusion 102, which is convenient for installation and fixing. The left and right sides of the connector 1 are fixedly installed with fixing plates 6 that fit the top of the shell 5.

[0026] In the second embodiment, a disassembly assembly is provided inside the shell 5, and the disassembly assembly includes a reset spring 7 fixedly installed on the left and right sides of the shell 5, a movable plate 8 is fixedly installed on one side of the reset spring 7, and the top and bottom of the movable plate 8 are fixedly installed with limit blocks 9 slidably connected to the shell 5. A limit groove is provided inside the shell 5, and the limit block 9 is slidably connected to the shell 5 through the limit groove, so as to facilitate the limiting of the limit block 9.

[0027] Among them, a limit pin 10 extending to the outside of the shell 5 is fixedly installed on one side of the movable plate 8, and a latch 11 fixedly connected to the fixed plate 6 is clamped on the inner side of the limit pin 10. The shape of the latch 11 is L-shaped, and the shape of the limit pin 10 is U-shaped. The limit pin 10 and the latch 11 are clamped with each other, and can be clamped to limit or disassembled, which is convenient for quick disassembly and assembly.

[0028] It should be noted that the pressure sensor, which is easy to install, can extend and retract the reset spring 7 by means of the setting of the adjustment and fixing mechanism, using the limit pin 10, the movable plate 8 and the limit block 9, so as to conveniently drive the limit pin 10 to extend and retract, so that the limit pin 10 can plug and fix the plug 11 or disassemble and disassemble it, so as to facilitate and quickly disassemble and assemble the docking plug 1 and the housing 5, thereby greatly improving the flexibility and practicality of the device. The connector 1 is pressed in along the lead surface 503, and the protrusion 102 can be pressed into the annular groove 501 inside the housing 5, thereby generating a compression amount on the sealing ring 4 and limiting the longitudinal displacement of the housing 5 and the connector 1. The positioning portion 101 of the connector 1 cooperates with the positioning groove 502 of the housing 5 to limit the rotational movement of the housing 5 and the connector 1, thereby replacing the current assembly method of fixing the housing 5 and the connector 1 together by riveting, thereby reducing the production cost of the device.

[0029] The working principle of the above embodiment is:

[0030] The pressure sensor, which is easy to install, can be used by first pressing the limit pin 10 when in use. The limit pin 10 moves to drive the movable plate 8 and the limit block 9 to move. The stable movement of the movable plate 8 can compress the reset spring 7 until the limit pin 10 is retracted into the interior of the housing 5. At this time, the connector 1 drives the fixed plate 6 to move and fit on the top of the housing 5, so that the fixed plate 6 drives the latch 11 to insert into the interior of the housing 5. Then the limit pin 10 can be released, and the reset spring 7 starts to reset automatically, which can drive the movable plate 8 and the limit pin 10 to reset and move, so that the limit pin 10 moves to engage with the latch 11, and the fixed plate 6 and the housing 5 can be fixed.

[0031] The connector 1 and the housing 5 are limited and fixed, and then the connector 1 is pressed in along the lead surface 503, and the protrusion 102 can be pressed into the annular groove 501 inside the housing 5, which produces a compression amount on the sealing ring 4, and at the same time limits the longitudinal displacement of the housing 5 and the connector 1. The positioning portion 101 of the connector 1 and the positioning groove 502 of the housing 5 cooperate to limit the rotational movement of the housing 5 and the connector 1, replacing the current assembly method of fixing the housing 5 and the connector 1 together by riveting. Similarly, the limit pin 10 can be pressed, so that the limit pin 10 and the latch pin 11 are no longer engaged, and the connector 1 and the housing 5 can be disassembled, which greatly improves the flexibility and practicality of the device.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure sensor that is easy to install, comprising a connector (1), characterized in that: The outer side and bottom of the connector (1) are provided with an adjustment and fixing mechanism; The adjusting and fixing mechanism comprises a flexible circuit board (2) fixedly mounted inside the connector (1); a sensitive element (3) is arranged at the bottom of the flexible circuit board (2); a sealing ring (4) is arranged on the outside of the sensitive element (3); a shell (5) is movably connected to the outside of the flexible circuit board (2), the sensitive element (3) and the sealing ring (4); a fixing plate (6) fitted with the top of the shell (5) is fixedly mounted on both the left and right sides of the connector (1); and a disassembly assembly component is arranged inside the shell (5).

2. A pressure sensor that is easy to install according to claim 1, characterized in that: The disassembly and assembly component comprises a return spring (7) fixedly mounted on the left and right sides of the shell (5); a movable plate (8) is fixedly mounted on one side of the return spring (7); a limit block (9) slidably connected to the shell (5) is fixedly mounted on the top and bottom of the movable plate (8); a limit pin (10) extending to the outside of the shell (5) is fixedly mounted on one side of the movable plate (8); a latch (11) fixedly connected to the fixed plate (6) is clamped on the inner side of the limit pin (10).

3. The pressure sensor that is easy to install according to claim 1, characterized in that: A positioning portion (101) is provided inside the connector (1), and a protruding portion (102) is provided outside the connector (1).

4. A pressure sensor that is easy to install according to claim 3, characterized in that: An annular groove (501) is provided inside the shell (5), a positioning groove (502) is provided on the top of the shell (5), and a lead surface (503) is provided on the inner side of the shell (5).

5. The pressure sensor that is easy to install according to claim 4, characterized in that: The connector (1) is pressed into the interior of the housing (5) via the lead surface (503), and the connector (1) can be pressed into the annular groove (501) inside the housing (5) via the protrusion (102).

6. The pressure sensor that is easy to install according to claim 4, characterized in that: The positioning portion (101) of the connector (1) can cooperate with the positioning groove (502) of the housing (5).

7. The pressure sensor that is easy to install according to claim 2, characterized in that: A limiting groove is provided inside the housing (5), and the limiting block (9) is slidably connected to the housing (5) via the limiting groove.

8. The pressure sensor that is easy to install according to claim 2, characterized in that: The shape of the latch pin (11) is L-shaped, the shape of the limit pin (10) is U-shaped, and the limit pin (10) and the latch pin (11) are mutually engaged.

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