Interface packaging mechanism of pressure sensor

Abstract

The utility model relates to the technical field of pressure sensors, and discloses an interface packaging mechanism of a pressure sensor, which comprises a sensor protection shell and an external pipeline main body arranged above the sensor protection shell, and further comprises a threaded rotating piece rotationally sleeved outside the sensor protection shell; the limiting outer ring plate is fixedly arranged on the outer wall of the external pipeline body, a limiting sliding groove is formed in the side wall of the limiting outer ring plate, and a limiting protruding block is installed in the limiting sliding groove in a sliding mode; the limiting spring is installed in a cavity of the limiting sliding groove, and the two ends of the limiting spring are connected with the limiting protruding block and the bottom wall of the limiting sliding groove correspondingly; and the bottom column cylinder is fixedly arranged on the surface of the threaded rotating piece, the top of the bottom column cylinder is slidably sleeved with a cylinder insertion rod, and a spring connected with the cylinder insertion rod is arranged in a cavity of the bottom column cylinder. The limiting convex block is separated from the limiting sliding groove through the elasticity of the limiting spring, the right-angle face of the limiting convex block is used for limiting the barrel insertion rod, the barrel insertion rod cannot move in the reverse direction, and therefore locking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to an interface packaging mechanism of a 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 usually consists of a pressure sensitive element, a device that converts the force or motion generated by the pressure sensitive element into electrical parameters, and a device that displays or records the electrical parameters.

[0003] Through patent search, it was found that the interface packaging mechanism of a pressure sensor with publication number CN219757601U adopts a sleeve connection method for the connection between the protective shell and the external pipe body, and the threaded limiting block cooperates with the outside of the external pipe body to limit the horizontal direction of the connection between the protective shell and the external pipe body, thereby reducing the problem of gas leakage and liquid leakage at the interface of the device caused by gaps caused by threaded connections. After the Z-shaped block is inserted into the hole of the arc groove, the above-mentioned comparative document is not easy to detach from the hole, which makes disassembly and assembly more difficult. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an interface packaging mechanism for a pressure sensor, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: comprising: a sensor protection shell and an external pipe body arranged above the sensor protection shell,

[0006] Also includes:

[0007] The threaded rotating part and the rotating sleeve are arranged outside the sensor protection shell;

[0008] The limiting outer ring plate is fixedly arranged on the outer wall of the externally connected pipe body, and the side wall of the limiting outer ring plate is provided with a limiting slide groove, and the limiting protrusion is slidably installed in the groove of the limiting slide groove;

[0009] A limit spring is installed in the cavity of the limit slide groove, and two ends of the limit spring are respectively connected to the limit protrusion and the bottom wall of the limit slide groove;

[0010] The bottom column tube is fixed on the surface of the threaded rotating part. The top sliding sleeve of the bottom column tube is provided with a tube inserting rod. The cavity of the bottom column tube is provided with a spring connected with the tube inserting rod.

[0011] Furthermore, an annular groove is formed on the outer wall of the sensor protection shell, and a convex ring sliding along the annular groove is fixedly formed on the inner wall of the threaded rotating part.

[0012] Furthermore, a sealing cylinder is provided on the upper part of the sensor protection shell, a positioning strip is fixedly provided on the inner wall of the external pipe body, and a positioning groove slidably connected to the positioning strip is opened on the outer wall of the sealing cylinder.

[0013] Furthermore, a positioning retaining ring is fixedly provided on the inner wall of the external pipe body.

[0014] Furthermore, the inner wall of the threaded rotating member is provided with an internal threaded portion, and the outer wall of the external pipe body is provided with an external threaded portion threadably matched with the internal threaded portion.

[0015] Furthermore, a plurality of groups of limiting protrusions are arranged in a circular array along the outer wall of the limiting outer ring plate, and one side of the limiting slide groove adopts an arc surface and the other side adopts a right-angle surface.

[0016] Furthermore, the lower part of the limiting slide groove adopts an arc-shaped slope structure that transitions upward.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] During the spiral movement of the internal threaded portion and the external threaded portion of the present application, the barrel insert rod will move in an annular shape along the outer periphery of the limiting outer ring plate. As the barrel insert rod moves, the contacting limiting protrusion will be pressed down, causing the limiting protrusion to retract into the cavity of the limiting slide groove. On the contrary, after the barrel insert rod is separated from the limiting protrusion, the limiting protrusion is separated from the groove of the limiting slide groove by the elasticity of the limiting spring, and the barrel insert rod is limited by the right angle surface of the limiting protrusion, so that the barrel insert rod cannot move in the opposite direction, thereby achieving locking. Compared with the comparative documents, the locking has a stronger adjustable ability. As the number of sealing gaskets changes, the barrel insert rod can be combined with limiting protrusions in different positions, and has stronger applicability. It also has the ability to quickly separate the barrel insert rod from the limiting protrusion, which facilitates the disassembly and assembly of the entire sensor protective shell and the external pipeline body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the utility model;

[0021] Figure 3 This is an enlarged view of the limiting outer ring plate of the utility model;

[0022] Figure 4 This is the internal diagram of the limiting outer ring plate of the utility model;

[0023] Figure 5 This is a disassembled diagram of the bottom column and the column insert rod of the utility model.

[0024] In the figure: 1. sensor protection shell; 2. threaded rotating part; 3. sealing cylinder part; 4. external pipe body; 5. positioning strip; 6. positioning groove; 7. positioning retaining ring; 8. internal threaded part; 9. external threaded part; 10. limiting outer ring plate; 11. limiting protrusion; 12. limiting slide groove; 13. limiting spring; 14. bottom column cylinder; 15. cylinder insert rod. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-5 , including: a sensor protective shell 1 and an external pipe body 4 arranged above the sensor protective shell 1, the sensor protective shell 1 has a built-in pressure detection sensor body. When in use, the sensor protective shell 1 needs to be combined with the external pipe body 4, the threaded rotating member 2 is rotatably sleeved outside the sensor protective shell 1, and in order to complete the rotation of the threaded rotating member 2, an annular groove is opened on the outer wall of the port of the sensor protective shell 1, and a convex ring sliding along the annular groove is fixed on the inner wall of the threaded rotating member 2, so that the threaded rotating member 2 can rotate freely along the sensor protective shell 1 without changing its position, and an internal threaded portion 8 is arranged on the inner wall of the threaded rotating member 2, and an external threaded portion 9 meshing with the internal threaded portion 8 is arranged on the upper half of the external pipe body 4. Therefore, after the sensor protective shell 1 and the external pipe body 4 are plugged and adapted, the threaded rotating member 2 can be rotated to make the internal threaded portion 8 mesh with the external threaded portion 9 to complete the connection.

[0027] A sealing cylinder 3 is provided on the upper part of the sensor protection shell 1, a positioning strip 5 is fixedly provided on the inner wall of the external pipe body 4, a positioning groove 6 slidably connected to the positioning strip 5 is opened on the outer wall of the sealing cylinder 3, and a positioning retaining ring 7 is fixedly provided on the inner wall of the external pipe body 4. Before the external threaded portion 9 and the internal threaded portion 8 are in spiral contact, the external pipe body 4 needs to be sleeved in the sensor protection shell 1, and the external pipe body 4 is inserted into the gap between the sealing cylinder 3 and the sensor protection shell 1, and the outer wall of the sealing cylinder 3 moves along the inner wall of the external pipe body 4, and the sealing cylinder 3 and the external pipe body 4 are limited by sliding the positioning strip 5 in the groove of the positioning groove 6, and finally the top of the sealing cylinder 3 abuts against the lower end of the positioning retaining ring 7, and the bottom of the external pipe body 4 abuts against the bottom of the gap, and a sealing strip is placed at the positioning retaining ring 7 and the gap to improve the sealing effect.

[0028] The limiting outer ring plate 10 is fixedly arranged on the outer wall of the external pipe body 4, and the side wall of the limiting outer ring plate 10 is provided with a limiting slide groove 12, and a limiting protrusion 11 is slidably installed in the groove of the limiting slide groove 12; a limiting spring 13 is installed in the cavity of the limiting slide groove 12, and the two ends of the limiting spring 13 are respectively connected with the limiting protrusion 11 and the bottom wall of the limiting slide groove 12; a bottom column 14 is fixedly arranged on the surface of the threaded rotating member 2, and a cylinder plug rod 15 is slidingly sleeved on the top of the bottom column 14, and a spring connected to the cylinder plug rod 15 is arranged in the cavity of the bottom column 14, and a plurality of groups of limiting protrusions 11 are distributed in a circular array along the outer wall of the limiting outer ring plate 10, one side of the limiting slide groove 12 adopts an arc surface, and the other side adopts a right-angle surface, and the lower part of the limiting slide groove 12 adopts an arc slope structure that transitions upward, and as the internal thread part 8 and the external thread part 9 move spirally, the cylinder plug rod 15 will gradually move upward, and finally the cylinder plug rod 15 will be The cylinder rod 15 is pressed against the groove of the bottom column 14 to shrink the spring inside the bottom column 14, and then the cylinder rod 15 is rotated to prevent the cylinder rod 15 from being in a state of ...

[0029] 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. An interface packaging mechanism for a pressure sensor, comprising: A sensor protection shell (1) and an external pipe body (4) arranged above the sensor protection shell (1), It is characterized by further comprising: A threaded rotating member (2) is rotatably sleeved outside the sensor protective shell (1); The limiting outer ring plate (10) is fixedly mounted on the outer wall of the externally connected pipe body (4); a limiting sliding groove (12) is provided on the side wall of the limiting outer ring plate (10); a limiting protrusion (11) is slidably mounted in the groove of the limiting sliding groove (12); A limit spring (13) is installed in the cavity of the limit slide groove (12), and two ends of the limit spring (13) are respectively connected to the limit protrusion (11) and the bottom wall of the limit slide groove (12); The bottom column tube (14) is fixedly arranged on the surface of the threaded rotating member (2), the top sliding sleeve of the bottom column tube (14) is provided with a tube inserting rod (15), and a spring connected to the tube inserting rod (15) is arranged in the cavity of the bottom column tube (14).

2. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: An annular groove is formed on the outer wall of the sensor protection shell (1), and a convex ring which slides along the annular groove is fixedly formed on the inner wall of the threaded rotating part (2).

3. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: A sealing cylinder (3) is arranged on the upper part of the sensor protection shell (1), a positioning strip (5) is fixedly arranged on the inner wall of the external pipe body (4), and a positioning groove (6) is provided on the outer wall of the sealing cylinder (3) and is slidably connected to the positioning strip (5).

4. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: A positioning retaining ring (7) is fixedly provided on the inner wall of the external pipe body (4).

5. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: The inner wall of the threaded rotating member (2) is provided with an internal threaded portion (8), and the outer wall of the externally connected pipe body (4) is provided with an external threaded portion (9) threadably matched with the internal threaded portion (8).

6. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: A plurality of groups of limiting protrusions (11) are arranged in a circular array along the outer wall of the limiting outer ring plate (10); one side of the limiting sliding groove (12) adopts an arc surface, and the other side adopts a right-angle surface.

7. The interface packaging mechanism of a pressure sensor according to claim 1, characterized in that: The lower part of the limiting slide groove (12) adopts an arc-shaped slope structure that transitions upward.

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