A pressure sensor for an automobile

Abstract

The utility model provides a kind of pressure sensor for automobile. Including trachea and pressure sensor body, the connecting seat is connected on the trachea, the threaded barrel is threadedly connected in the connecting seat, the ring plate is installed on the threaded barrel, the guide rod is installed on the ring plate, the sliding block is slidably installed on the guide rod. In the utility model, by adopting the cooperation structure of limiting groove and limiting clamping block, combined with the design of spring-driven stop plate, the quick clamping and separation of pressure sensor body and threaded barrel is realized, replacing traditional threaded screwing connection, greatly improving the disassembly and assembly efficiency, while reducing mechanical wear during disassembly and assembly process, avoiding the problem of thread slipping that is easy to occur after traditional threaded connection is disassembled multiple times, prolonging the service life of components, sealing is realized through the sealing ring above the threaded barrel, replacing the sealing method of raw material belt winding, which simplifies the installation steps and improves the sealing reliability, ensuring the stability of pressure monitoring.

Description

Technical Field

[0001] This utility model relates to the structural design of pressure sensors, and in particular to a pressure sensor for automobiles, belonging to the field of automotive parts technology. Background Technology

[0002] Automotive pressure sensors are devices that can sense pressure signals and convert them into usable output electrical signals. They are used in many fields such as automotive braking systems and engine control systems.

[0003] CN219319638U discloses a pressure sensor for automobiles, including a pressure sensor body. An adjustment panel is mounted on the lower end of the pressure sensor body, with an adjustment hole in the middle of the adjustment panel. A gasket ring is fitted between the top of the adjustment panel and the pressure sensor body, and a clamping nut is provided at the contact point between the bottom of the adjustment panel and the pressure sensor body. External threads are provided on the lower outer surface of the pressure sensor body. A mounting block with a mounting hole is connected to the left end of the adjustment panel. This pressure sensor, by using the adjustment panel, adjustment hole, gasket ring, clamping nut, external threads, mounting block, and mounting hole, and utilizing their interoperability, allows for left and right adjustment of the pressure sensor body, enhancing flexibility and meeting the needs of different installation positions. It also facilitates disassembly.

[0004] However, these pressure sensors need to be disassembled periodically to clean internal impurities, thereby ensuring the stability and accuracy of pressure monitoring. However, the actual disassembly and assembly process involves not only tightening the threads and clamping the nuts, but also wrapping the threads with Teflon tape before connecting them. This cumbersome process not only leads to low disassembly and assembly efficiency, but also may cause thread stripping after repeated disassembly, requiring improvement.

[0005] Therefore, a pressure sensor for automobiles is proposed. Utility Model Content

[0006] In view of this, the present invention provides a pressure sensor for automobiles to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0007] The technical solution of this utility model is implemented as follows: A pressure sensor for automobiles includes an air tube and a pressure sensor body. A connecting seat is connected to the air tube, and a threaded cylinder is threadedly connected to the connecting seat. An annular plate is installed on the threaded cylinder, and a guide rod is installed on the annular plate. A slider is slidably installed on the guide rod, and a stop plate is installed on the slider. A spring is sleeved on the guide rod. A limit groove is provided inside the threaded cylinder, and a limit block is slidably installed in the limit groove. A connecting cylinder is connected below the pressure sensor body, and a pressure plate is installed on the connecting cylinder. A sealing ring is provided above the threaded cylinder, and an annular groove is provided on the connecting cylinder.

[0008] More preferably, a horizontal sliding groove is provided on the inner wall of the limiting groove, and protrusion structures adapted to the sliding groove are installed on both sides of the limiting block, and the protrusion structures are slidably disposed in the sliding groove.

[0009] More preferably, the abutment is slidably mounted on the threaded cylinder, and the abutment is provided with a protrusion.

[0010] More preferably, one end of the spring is mounted below the slider, and the other end of the spring is mounted above the ring plate, and the spring drives the abutment to tend to abut against the outer wall of the limiting groove.

[0011] More preferably, the limiting block is adapted to the annular groove, and the limiting block is provided with rounded corners.

[0012] In a further preferred embodiment, an interceptor cylinder is inserted inside the threaded cylinder, a filter screen is provided inside the interceptor cylinder, a threaded collar is installed below the threaded cylinder, a top ring is threadedly connected to the threaded collar, and a knob is installed below the top ring.

[0013] More preferably, the inner wall of the threaded cylinder is provided with a vertical rib groove, and the intercepting cylinder is provided with a rib structure adapted to the rib groove, the rib structure being inserted into the rib groove.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] I. In this utility model, by adopting a matching structure of limiting groove and limiting block, combined with a spring-driven abutment design, the pressure sensor body and the threaded cylinder can be quickly engaged and disengaged, replacing the traditional threaded connection, greatly improving the efficiency of disassembly and assembly, while reducing mechanical wear during disassembly and assembly, avoiding the stripping problem that easily occurs after repeated disassembly of traditional threaded connections, and extending the service life of components. In addition, a sealing ring is used to achieve sealing, replacing the sealing method of wrapping with PTFE tape, which simplifies the installation steps, improves the reliability of sealing, and ensures the stability of pressure monitoring.

[0016] Second, in this utility model, by setting an intercepting cylinder with a filter screen, and in conjunction with the positioning structure of the groove and the rib, as well as the disassembly components of the threaded collar and the top ring, the internal impurities can be cleaned without disassembling the entire sensor body. The intercepting cylinder can be disassembled and assembled simply by turning the knob, which effectively improves convenience, makes the operation simple and convenient, and is highly practical.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 3 This is an exploded view of the interception tube of this utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the limiting groove and limiting block in this utility model.

[0024] Reference numerals: 1. Air tube; 2. Connecting seat; 3. Threaded cylinder; 4. Pressure sensor body; 5. Ring plate; 6. Guide rod; 7. Slider; 8. Support plate; 9. Spring; 10. Limiting groove; 11. Limiting block; 12. Pressure plate; 13. Sealing ring; 14. Annular groove; 15. Ribbed groove; 16. Interception cylinder; 17. Filter screen; 18. Threaded collar; 19. Top ring; 20. Knob; 21. Connecting cylinder. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, this utility model embodiment provides a pressure sensor for automobiles, including an air pipe 1 and a pressure sensor body 4. A connecting seat 2 is connected to the air pipe 1, and a threaded cylinder 3 is threadedly connected to the connecting seat 2. An annular plate 5 is installed on the threaded cylinder 3, a guide rod 6 is installed on the annular plate 5, a slider 7 is slidably installed on the guide rod 6, a stop plate 8 is installed on the slider 7, and a spring 9 is sleeved on the guide rod 6. A limit groove 10 is provided inside the threaded cylinder 3, and a limit block 11 is slidably installed inside the limit groove 10. A connecting cylinder 21 is connected below the pressure sensor body 4, a pressure plate 12 is installed on the connecting cylinder 21, a sealing ring 13 is provided above the threaded cylinder 3, and an annular groove 14 is provided on the connecting cylinder 21.

[0028] In one embodiment, a horizontal sliding groove is provided on the inner wall of the limiting groove 10, and protrusion structures adapted to the sliding groove are installed on both sides of the limiting block 11. The protrusion structures are slidably disposed in the sliding groove. The cooperation between the sliding groove and the protrusion restricts the movement trajectory of the limiting block 11, preventing it from shifting or falling off under pressure, and enhancing the connection stability.

[0029] In one embodiment, the abutment 8 is slidably mounted on the threaded cylinder 3, and a protrusion is installed on the abutment 8. The protrusion provides a force point for manual operation, simplifies the unlocking process of the limit block 11, and improves the convenience of user operation.

[0030] In one embodiment, one end of the spring 9 is mounted below the slider 7, and the other end of the spring 9 is mounted above the ring plate 5. The spring 9 drives the abutment 8 to tend to abut against the outer wall of the limiting groove 10. The resetting action of the spring 9 realizes the automatic locking of the limiting block 11, reducing manual intervention and improving installation efficiency.

[0031] In one embodiment, the limiting block 11 is adapted to the annular groove 14, and the limiting block 11 is provided with rounded corners. The rounded corner design reduces the frictional resistance when the limiting block 11 contacts the connecting cylinder 21 or the annular groove 14.

[0032] In one embodiment, an intercepting cylinder 16 is inserted inside the threaded cylinder 3, and a filter screen 17 is disposed inside the intercepting cylinder 16. A threaded collar 18 is installed below the threaded cylinder 3, and a top ring 19 is threadedly connected inside the threaded collar 18. A knob 20 is installed below the top ring 19. The filter screen 17 filters impurities, protects the core components of the sensor, and reduces monitoring errors caused by impurity accumulation.

[0033] In one embodiment, a vertically oriented groove 15 is provided on the inner wall of the threaded cylinder 3, and a rib structure adapted to the groove 15 is provided on the intercepting cylinder 16, with the rib structure inserted into the groove 15. The groove 15 and the rib structure enable quick positioning and stable installation of the intercepting cylinder 16, while also facilitating the disassembly and cleaning of the filter screen 17, thus improving maintenance efficiency.

[0034] When this utility model is in operation: when assembling the threaded cylinder 3 and the connecting seat 2 of the air pipe 1, first wrap the PTFE tape around the external thread of the threaded cylinder 3, and then screw the threaded cylinder 3 into the connecting seat 2. Under the action of the thread, a sealed connection with the air pipe 1 is achieved, providing a foundation for subsequent pressure transmission and component installation.

[0035] When inserting the connecting cylinder 21, first press down on the protrusion on the abutment plate 8 to drive the slider 7 down along the guide rod 6, and at the same time compress the spring 9 so that the abutment plate 8 no longer abuts against the outside of the limiting groove 10. At this time, the limiting block 11 can slide freely along the groove in the limiting groove 10. Align the connecting cylinder 21 with the threaded cylinder 3 and insert it. Under the action of the rounded corners on the surface of the limiting block 11, it can slide along the limiting groove 10 as the connecting cylinder 21 is inserted. When the annular groove 14 on the connecting cylinder 21 is aligned with the limiting block 11, release the protrusion. The spring 9 resets and pushes the slider 7 up, causing the abutment plate 8 to abut against the outside of the limiting groove 10 again. Under the combined action of the elastic force of the spring 9 and the rounded corners on the surface of the limiting block 11, the limiting block 11 slides into the annular groove 14 to complete the engagement. At this time, the pressure plate 12 on the connecting cylinder 21 contacts the upper surface of the threaded cylinder 3, and the sealing ring 13 between the two is pressed tight to form an effective seal, ensuring that there is no leakage of gas or fluid during pressure monitoring and ensuring measurement accuracy. When disassembling the connecting cylinder 21, press down on the protrusion first to lower the abutment 8 so that it no longer abuts against the outside of the limiting groove 10. Then pull the connecting cylinder 21 out of the threaded cylinder 3. Under the action of force, the limiting block 11 disengages from the annular groove 14, and the connecting cylinder 21 can be pulled out of the threaded cylinder 3.

[0036] When installing the interceptor cylinder 16, align its ribbed structure with the groove 15 inside the threaded cylinder 3 and insert it. Rotating the knob 20 causes the top ring 19 to move upward under the action of the threaded collar 18, and the top ring 19 abuts against the bottom of the interceptor cylinder 16 to fix it in place. During operation, airflow enters from the air pipe 1 and is filtered by the filter screen 17 inside the interceptor cylinder 16. Impurities are intercepted on the filter screen 17, preventing them from entering the pressure sensor body 4 and affecting the monitoring accuracy. When it is necessary to clean impurities, rotate the knob 20 in the opposite direction. The top ring 19 moves downward under the action of the thread and disengages from the interceptor cylinder 16, allowing the interceptor cylinder 16 to be pulled out of the threaded cylinder 3 for cleaning or replacement. After cleaning, reinsert it and tighten the top ring 19 to reset it. There is no need to disassemble the entire sensor, improving maintenance efficiency.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pressure sensor for automobiles, characterized in that: The device includes a trachea (1) and a pressure sensor body (4). A connecting seat (2) is connected to the trachea (1). A threaded cylinder (3) is threaded into the connecting seat (2). An annular plate (5) is installed on the threaded cylinder (3). A guide rod (6) is installed on the annular plate (5). A slider (7) is slidably installed on the guide rod (6). A stop plate (8) is installed on the slider (7). A spring (9) is sleeved on the guide rod (6). A limit groove (10) is provided inside the threaded cylinder (3). A limit block (11) is slidably installed inside the limit groove (10). A connecting cylinder (21) is connected below the pressure sensor body (4). A pressure plate (12) is installed on the connecting cylinder (21). A sealing ring (13) is provided above the threaded cylinder (3). An annular groove (14) is provided on the connecting cylinder (21).

2. The pressure sensor for automobiles according to claim 1, characterized in that: The inner wall of the limiting groove (10) is provided with a horizontal sliding groove, and the two sides of the limiting block (11) are equipped with protrusion structures that are adapted to the sliding groove, and the protrusion structures are slidably disposed in the sliding groove.

3. The pressure sensor for automobiles according to claim 1, characterized in that: The abutment (8) is slidably mounted on the threaded cylinder (3), and a protrusion is mounted on the abutment (8).

4. The pressure sensor for automobiles according to claim 1, characterized in that: One end of the spring (9) is installed below the slider (7), and the other end of the spring (9) is installed above the ring plate (5). The spring (9) drives the abutment plate (8) to tend to abut against the outer wall of the limiting groove (10).

5. A pressure sensor for automobiles according to claim 1, characterized in that: The limiting block (11) is adapted to the annular groove (14), and the limiting block (11) is provided with rounded corners.

6. A pressure sensor for automobiles according to claim 1, characterized in that: An interceptor (16) is inserted inside the threaded cylinder (3), and a filter (17) is provided inside the interceptor (16). A threaded collar (18) is installed below the threaded cylinder (3), and a top ring (19) is threadedly connected inside the threaded collar (18). A knob (20) is installed below the top ring (19).

7. A pressure sensor for automobiles according to claim 6, characterized in that: The inner wall of the threaded cylinder (3) is provided with a vertical rib groove (15), and the intercepting cylinder (16) is provided with a rib structure that matches the rib groove (15), and the rib structure is inserted into the rib groove (15).

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