Waterproof pressure sensor

Abstract

The utility model relates to the technical field of pressure sensors, and discloses a waterproof pressure sensor, which comprises a sensor main body and a sensor connecting part arranged below the sensor main body, and further comprises a mounting cylinder fixedly arranged at the top of the sensor connecting part, and a top platform arranged at the port of the mounting cylinder; the sealing boss is fixedly arranged on the inner wall of the mounting cylinder; the inserting rod longitudinally penetrates through the interior of the top table. The pressing rod extends into the sealing boss in a sliding mode, the bottom end of the pressing rod is connected with the bottom end of the inserting rod, a positioning hole is formed in the surface of the inserting rod, and a locking screw hole matched with the positioning hole is formed in the outer wall of the mounting cylinder. According to the application, the combination of the locking screw hole and the positioning hole is completed through the bolt interface, so that the situation of sealing weakening caused by thread retreating in the long-term use process of the whole sensor can be avoided, and the sealing waterproof effect of the whole pressure sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a waterproof 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. Traditional pressure sensors are mainly mechanical structure devices that indicate pressure by the deformation of elastic elements. However, this structure is large in size and heavy in weight and cannot provide electrical output. With the development of semiconductor technology, semiconductor pressure sensors have also emerged.

[0003] The connection of the pressure sensor is generally a threaded connection. Over time, the thread will be derailed to a certain extent, which will cause the strength of the seal to weaken. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a waterproof pressure sensor to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: comprising: a sensor body and a sensor connecting part arranged below the sensor body,

[0006] Also includes:

[0007] The installation tube is fixedly arranged on the top of the sensor connection part, and a top platform is arranged at the port of the installation tube;

[0008] The sealing boss is fixedly arranged on the inner wall of the mounting cylinder;

[0009] The insertion rod passes longitudinally through the interior of the top platform;

[0010] The pressure rod slides into the interior of the sealing boss, and the bottom end of the pressure rod is connected to the bottom end of the insertion rod. A positioning hole is opened on the surface of the insertion rod, and a locking screw hole matched with the positioning hole is opened on the outer wall of the installation cylinder.

[0011] Furthermore, an operating boss is installed below the sensor body, and a clamping disk is fixedly provided on the bottom wall of the operating boss.

[0012] Furthermore, an engaging sleeve is fixedly provided at the bottom of the clamping disc, and an inner wall of the mounting tube is provided with an internal threaded portion threadedly connected to the engaging sleeve.

[0013] Furthermore, the top of the sealing boss adopts a slope structure, and the bottom of the engaging sleeve is fixedly provided with a rubber bottom pad.

[0014] Furthermore, the clamping disc is adapted to the size of the top platform, and the maximum diameter of the operating convex disc is greater than the diameter of the top platform.

[0015] Furthermore, the pressure rod and the insertion rod are in a U-shaped structure.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The present application sets a sealing boss inside the mounting tube, and the sealing effect can be improved by squeezing the rubber base pad while the sleeve spiral is engaged. At the same time, as the rubber base pad is pushed forward, the pressure rod raised at the sealing boss moves downward, thereby moving the insertion rod downward, and then aligning the top platform with the locking screw hole, and completing the combination of the locking screw hole and the positioning hole through the bolt interface. In this way, the entire sensor will not be weakened in the seal due to thread backing during long-term use, thereby improving the sealing and waterproof effect of the entire pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is an enlarged view of the installation tube of the utility model;

[0020] Figure 3 This is an enlarged view of the operating convex disc of the utility model;

[0021] Figure 4 This is the internal diagram of the installation tube of the utility model.

[0022] In the figure: 1. sensor body; 2. sensor connection part; 3. engagement sleeve; 4. operating boss; 5. mounting tube; 6. clamping disk; 9. internal threaded part; 10. top platform; 11. insertion rod; 12. rubber base pad; 13. sealing boss; 14. pressure rod; 15. locking screw hole; 16. positioning hole. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4, including: a sensor body 1 and a sensor connecting part 2 arranged below the sensor body 1, a mounting tube 5 with a cylindrical structure is installed on the top of the sensor connecting part 2, and a top platform 10 is arranged at the port of the mounting tube 5, and an operating boss 4 is installed below the sensor body 1, and a clamping disk 6 is fixed to the bottom wall of the operating boss 4. An engaging sleeve 3 is fixedly provided at the bottom of the clamping disk 6, and an internal threaded portion 9 threadedly connected to the engaging sleeve 3 is provided on the inner wall of the mounting tube 5. Therefore, the sensor body 1 and the sensor connecting portion 2 can be combined through the threaded combination of the engaging sleeve 3 and the internal threaded portion 9. The size of the clamping disk 6 is adapted to the top platform 10. Therefore, as the engaging sleeve 3 moves, the clamping disk 6 will eventually be attached to the upper part of the top platform 10. A sealing strip can be filled between the clamping disk 6 and the top platform 10 to improve the sealing effect. The maximum diameter of the operating boss 4 is larger than the diameter of the top platform 10. The top platform 10 makes it convenient to operate the operating boss 4 using tools such as a wrench, thereby reducing the difficulty of combining the engaging sleeve 3 with the internal threaded portion 9 and facilitating installation.

[0025] The sealing boss 13 is fixed on the inner wall of the mounting tube 5, and the sealing boss 13 protrudes into the interior of the mounting tube 5. The top of the sealing boss 13 adopts a slope structure. A rubber base pad 12 is fixed at the bottom of the engaging sleeve 3. As the engaging sleeve 3 is engaged with the internal threaded portion 9, the rubber base pad 12 is finally pressed against the upper slope of the sealing boss 13 to squeeze the rubber base pad 12, thereby improving the sealing effect. The insertion rod 11 longitudinally passes through the interior of the top platform 10, and the pressure rod 14 slides into the interior of the sealing boss 13, and the bottom end of the pressure rod 14 is connected to the bottom end of the insertion rod 11. The pressure rod 14 It has a U-shaped structure with the insertion rod 11. By pressing down the rubber base pad 12, the pressure rod 14 protruding from the top of the sealing boss 13 will move downward, so that the pressure rod 14 will be retracted into the sealing boss 13, and the insertion rod 11 fixedly connected to the pressure rod 14 will move downward synchronously. A positioning hole 16 is provided on the surface of the insertion rod 11, and a locking screw hole 15 adapted to the positioning hole 16 is provided on the outer wall of the mounting tube 5. When the pressure rod 14 moves to the bottom, the positioning hole 16 is aligned with the locking screw hole 15, and then the locking screw hole 15 can be combined with the positioning hole 16 by a screw, thereby enhancing the sealing effect and improving stability.

[0026] 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 waterproof pressure sensor, comprising: A sensor body (1) and a sensor connection portion (2) arranged below the sensor body (1), It is characterized by further comprising: A mounting tube (5) is fixedly mounted on the top of the sensor connecting portion (2), and a top platform (10) is provided at the end of the mounting tube (5); A sealing boss (13) is fixedly mounted on the inner wall of the mounting cylinder (5); An insertion rod (11) longitudinally passes through the interior of the top platform (10); The pressure rod (14) slides into the interior of the sealing boss (13), and the bottom end of the pressure rod (14) is connected to the bottom end of the insertion rod (11). The surface of the insertion rod (11) is provided with a positioning hole (16), and the outer wall of the installation tube (5) is provided with a locking screw hole (15) adapted to the positioning hole (16).

2. A waterproof pressure sensor according to claim 1, characterized in that: An operating convex disc (4) is installed below the sensor body (1), and a clamping disc (6) is fixedly provided on the bottom wall of the operating convex disc (4).

3. A waterproof pressure sensor according to claim 1, characterized in that: An engaging sleeve (3) is fixedly arranged at the bottom of the clamping disc (6), and an inner wall of the mounting cylinder (5) is provided with an internal threaded portion (9) threadably connected to the engaging sleeve (3).

4. A waterproof pressure sensor according to claim 1, characterized in that: The top of the sealing boss (13) adopts a slope structure, and the bottom of the engaging sleeve (3) is fixedly provided with a rubber bottom pad (12).

5. The waterproof pressure sensor according to claim 1, characterized in that: The clamping disc (6) is adapted to the size of the top platform (10), and the maximum diameter of the operating convex disc (4) is greater than the diameter of the top platform (10).

6. The waterproof pressure sensor according to claim 1, characterized in that: The pressure rod (14) and the insertion rod (11) are in a U-shaped structure.

Images