Pressure sensor with high connection strength

Abstract

The utility model provides a pressure sensor with high connection strength, which relates to the technical field of pressure sensors and comprises a shell, a cover plate is arranged on the top surface of the shell, a ring pad A is fixedly mounted on the surface of the cover plate, a sensor body is arranged in the shell, an inner sleeve is sleeved on the surface of the sensor body, and the ring pad A is fixedly mounted on the surface of the inner sleeve. The surface of the inner sleeve is sleeved with an outer sleeve, a sensing shaft is installed at the input end of the sensor body, a pressing plate is arranged on the surface of the sensing shaft, and a ring pad B is fixedly installed on the surface of the cover plate. By arranging the shell, the cover plate, the ring pad A, the ring pad B, the inner sleeve and the outer sleeve, the sealing effect of the joint of the sensor body and the shell is improved, and therefore the situation that moisture in air enters the sensor body, and consequently electric elements in the sensor body are corroded is avoided; and meanwhile, the sensor body is convenient to disassemble, assemble and maintain, the structure is simple, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor with high connection strength. Background Art

[0002] A pressure sensor is a device used to measure pressure by converting it into a measurable electrical signal output.

[0003] Publication No. CN220288862U discloses a pressure sensor, including: a plastic head; a PCB; a micro-electro-mechanical system sensor; an oil-filled capsule; a threaded head; and filling oil; wherein one end of the plastic head is sealed and connected to one end of the threaded head, and the connection constitutes a cavity structure, the PCB, the micro-electro-mechanical system sensor and the oil-filled capsule are arranged in the cavity structure, the PCB is arranged on the side close to the plastic head, the oil-filled capsule is arranged on the side close to the threaded head, the micro-electro-mechanical system sensor is arranged between the PCB and the oil-filled capsule, and the oil-filled capsule is a corrugated structure. The oil-filled capsule adopts a corrugated structure design to better disperse the pressure, improve the buffering effect of the oil-filled capsule, and improve the stability of the sensor. Although this type of pressure sensor has improved the stability of the sensor, it is lacking in the connection strength of the sensor. Since the connection structure between the sensor and the housing does not have a sealing and waterproof structure, this will cause the sensor to be affected by moisture in the air when it is working, causing the internal electrical components of the sensor to be corroded, thereby reducing its service life. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a pressure sensor with high connection strength, comprising a shell, a cover plate is provided on the top surface of the shell, a ring gasket A is fixedly installed on the surface of the cover plate, a sensor body is provided inside the shell, an inner sleeve is sleeved on the surface of the sensor body, an outer sleeve is sleeved on the surface of the inner sleeve, a sensing shaft is installed on the input end of the sensor body, a pressure plate is provided on the surface of the sensing shaft, a ring gasket B is fixedly installed on the surface of the cover plate, a sliding rod is slidably connected to the inside of the shell, a spring is sleeved on the surface of the sliding rod, a top plate is fixedly installed on the surface of the sliding rod, and an insert is fixedly installed on the surface of the cover plate.

[0006] Preferably, a cushion is fixedly mounted on the surface of the pressure plate, a positioning rod is fixedly mounted on the surface of the pressure plate, and a rotating block is rotatably connected to the surface of the sensing shaft. Here, the design of the positioning rod facilitates the installation of the pressure plate.

[0007] Preferably, one end of the spring is connected to the surface of the top plate, and the other end is connected to the inner surface of the shell. Here, the design of the spring plays an effect of driving the top plate to slide inside the shell.

[0008] Preferably, the top plate is slidably connected to the shell, and the plug block is slidably connected to the shell. Here, the sliding design of the plug block and the shell facilitates the fixing and removal of the cover plate through the plug block.

[0009] Preferably, the ring gasket A is slidably connected to the outer shell, and the ring gasket A, the ring gasket B and the inner sleeve are all made of natural rubber. Here, the natural rubber material design of the ring gasket A improves the sealing effect of the connection between the cover plate and the outer shell, while the design of the ring gasket B improves the sealing effect of the connection between the sensor shaft and the cover plate, and the design of the inner sleeve prevents the sensor body from bumping inside the outer sleeve.

[0010] Preferably, the outer sleeve is connected to the cover plate by threads, and the inner sleeve is connected to the outer sleeve by sliding. Here, the threaded connection design of the outer sleeve and the cover plate facilitates the disassembly and assembly of the outer sleeve, thereby facilitating the maintenance personnel to maintain the sensor body, and the sliding design of the inner sleeve and the outer sleeve facilitates the replacement of the inner sleeve.

[0011] Preferably, the positioning rod is slidably connected to the sensing shaft, the rotating block is threadedly connected to the positioning rod, and the cushion is made of natural rubber. Here, the sliding design of the positioning rod and the sensing shaft has the effect of limiting the pressure plate when installing the pressure plate, and the threaded connection design of the positioning rod and the rotating block has the effect of facilitating the disassembly and assembly of the pressure plate through the positioning rod, thereby facilitating the replacement of the pressure plate.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the sealing effect of the connection between the sensor body and the housing is improved by arranging the housing, the cover plate, the gasket A, the gasket B, the inner sleeve and the outer sleeve, thereby preventing moisture in the air from entering the interior of the sensor body and causing corrosion of its internal electrical components. At the same time, it also makes it easy to disassemble and maintain the sensor body, and the structure is simple and practical.

[0014] 2. In the utility model, the positioning rod, the cushion and the rotating block are provided to facilitate the positioning and installation of the pressure plate, and also to facilitate the disassembly of the pressure plate, thereby facilitating the replacement of the pressure plate and the cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic diagram of a three-dimensional structure of a pressure sensor with high connection strength is proposed for the utility model;

[0016] Figure 2 The utility model provides a schematic diagram of the exploded structure of an outer sleeve, an inner sleeve, a top plate, a sliding rod, a spring and a housing in a pressure sensor with high connection strength;

[0017] Figure 3 The utility model proposes a pressure sensor with high connection strength Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 A cross-sectional view of a housing, a cover plate and a sensor body in a pressure sensor with high connection strength is provided for the utility model;

[0019] Figure 5 The utility model provides an exploded structural diagram of a pressure plate and a rotating block in a pressure sensor with high connection strength.

[0020] Legend:

[0021] 1. Outer shell; 2. Cover plate; 3. Ring gasket A; 4. Sensor body; 5. Inner sleeve; 6. Outer sleeve; 7. Sensing shaft; 8. Pressure plate; 9. Ring gasket B; 10. Sliding rod; 11. Spring; 12. Top plate; 13. Soft pad; 14. Positioning rod; 15. Rotating block; 16. Insert block. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] See also Figure 1-5The utility model provides a technical solution: a pressure sensor with high connection strength, including a shell 1, a cover plate 2 is arranged on the top surface of the shell 1, a ring gasket A3 is fixedly installed on the surface of the cover plate 2, the ring gasket A3 is slidably connected to the shell 1, a sensor body 4 is arranged inside the shell 1, an inner sleeve 5 is sleeved on the surface of the sensor body 4, an outer sleeve 6 is sleeved on the surface of the inner sleeve 5, the outer sleeve 6 is connected to the cover plate 2 by threads, and the threaded connection design of the outer sleeve 6 and the cover plate 2 makes it easy to disassemble and assemble the outer sleeve 6, thereby facilitating the maintenance personnel to maintain the sensor body 4, and the inner sleeve 5 and the outer sleeve 6 are connected. The inner sleeve 5 and the outer sleeve 6 are connected by sliding connection. The sliding design of the inner sleeve 5 and the outer sleeve 6 makes it easy to replace the inner sleeve 5. The input end of the sensor body 4 is installed with a sensing shaft 7, and the surface of the sensing shaft 7 is provided with a pressure plate 8. The surface of the cover plate 2 is fixedly installed with a ring gasket B9. The materials of the ring gasket A3, the ring gasket B9 and the inner sleeve 5 are all natural rubber. The natural rubber material design of the ring gasket A3 improves the sealing effect of the connection between the cover plate 2 and the outer shell 1, and the design of the ring gasket B9 improves the sealing effect of the connection between the sensing shaft 7 and the cover plate 2. The design of the inner sleeve 5 prevents the sensor body 4 from bumping against the inside of the outer sleeve 6.

[0026] See also Figure 1-5 A slide rod 10 is slidably connected to the inside of the shell 1, and a spring 11 is sleeved on the surface of the slide rod 10. One end of the spring 11 is connected to the surface of the top plate 12, and the other end is connected to the inner surface of the shell 1. The design of the spring 11 drives the top plate 12 to slide inside the shell 1. The top plate 12 is fixedly installed on the surface of the slide rod 10, and the top plate 12 is slidably connected to the shell 1. An insert block 16 is fixedly installed on the surface of the cover plate 2, and the insert block 16 is slidably connected to the shell 1. The sliding design of the insert block 16 and the shell 1 makes it easy to fix and disassemble the cover plate 2 through the insert block 16.

[0027] Embodiment 2

[0028] See also Figure 1-5 A soft pad 13 is fixedly installed on the surface of the pressure plate 8, and the material of the soft pad 13 is natural rubber. A positioning rod 14 is fixedly installed on the surface of the pressure plate 8. The design of the positioning rod 14 makes it easy to install the pressure plate 8. The positioning rod 14 is slidingly connected to the sensor shaft 7. The sliding design of the positioning rod 14 and the sensor shaft 7 has the effect of limiting the pressure plate 8 when installing the pressure plate 8. A rotating block 15 is rotatably connected to the surface of the sensor shaft 7. The rotating block 15 is threadedly connected to the positioning rod 14, and the threaded connection design of the positioning rod 14 and the rotating block 15 makes it easy to disassemble and assemble the pressure plate 8 through the positioning rod 14, thereby facilitating the replacement of the pressure plate 8.

[0029] Working principle: When the sensor body 4 needs to be installed, just place the sensor body 4 inside the outer sleeve 6, and then install the outer sleeve 6 with the cover plate 2 through threads. At this time, insert the cover plate 2 into the inside of the shell 1 through the plug block 16, and then loosen the cover plate 2 after the cover plate 2 is rotated. At this time, the top plate 12 will be affected by the elastic force of the spring 11 to insert the plug block 16 into the inside of the shell 1. At this time, the connection between the cover plate 2 and the sensor body 4 can be completed. The shell 1, cover plate 2, ring gasket A3, ring gasket B9, inner sleeve 5 and outer sleeve 6 improve the sealing effect of the connection between the sensor body 4 and the shell 1, thereby preventing moisture in the air from entering the sensor. The interior of the main body 4 causes corrosion to its internal electrical components, and it also makes it easy to disassemble and maintain the sensor body 4. When the pressure plate 8 needs to be replaced, just rotate the turn block 15. After the turn block 15 is turned away from the positioning rod 14, the pressure plate 8 can be pulled out from the sensor shaft 7, and then the new cushion 13 is inserted into the sensor shaft 7 through the positioning rod 14, and then the turn block 15 is connected to the positioning rod 14 through a thread. The positioning rod 14, the cushion 13 and the turn block 15 make it easy to position and install the pressure plate 8, and also make it easy to disassemble the pressure plate 8, thereby facilitating the replacement of the pressure plate 8 and the cushion 13.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pressure sensor with high connection strength, comprising a housing (1), characterized in that: The top surface of the shell (1) is provided with a cover plate (2), and a ring gasket A (3) is fixedly installed on the surface of the cover plate (2); a sensor body (4) is provided inside the shell (1), and an inner sleeve (5) is sleeved on the surface of the sensor body (4), and an outer sleeve (6) is sleeved on the surface of the inner sleeve (5); a sensing shaft (7) is installed at the input end of the sensor body (4), and a pressure plate (8) is provided on the surface of the sensing shaft (7); a ring gasket B (9) is fixedly installed on the surface of the cover plate (2); a sliding rod (10) is slidably connected to the inside of the shell (1), and a spring (11) is sleeved on the surface of the sliding rod (10); a top plate (12) is fixedly installed on the surface of the sliding rod (10), and an insert (16) is fixedly installed on the surface of the cover plate (2).

2. The pressure sensor with high connection strength according to claim 1, characterized in that: A soft pad (13) is fixedly mounted on the surface of the pressure plate (8), a positioning rod (14) is fixedly mounted on the surface of the pressure plate (8), and a rotating block (15) is rotatably connected to the surface of the sensing shaft (7).

3. The pressure sensor with high connection strength according to claim 1, characterized in that: One end of the spring (11) is connected to the surface of the top plate (12), and the other end is connected to the inner surface of the outer shell (1).

4. The pressure sensor with high connection strength according to claim 1, characterized in that: The top plate (12) is slidably connected to the outer shell (1), and the insert block (16) is slidably connected to the outer shell (1).

5. The pressure sensor with high connection strength according to claim 1, characterized in that: The ring gasket A (3) is slidably connected to the outer shell (1), and the ring gasket A (3), the ring gasket B (9) and the inner sleeve (5) are all made of natural rubber.

6. The pressure sensor with high connection strength according to claim 1, characterized in that: The outer sleeve (6) and the cover plate (2) are connected via threads, and the inner sleeve (5) and the outer sleeve (6) are connected via sliding.

7. The pressure sensor with high connection strength according to claim 2, characterized in that: The positioning rod (14) is slidably connected to the sensing shaft (7), the rotating block (15) is threadedly connected to the positioning rod (14), and the soft pad (13) is made of natural rubber.

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