Automobile pressure sensor

Abstract

The utility model discloses an automobile pressure sensor, which belongs to the technical field of air inlet pressure sensors, and comprises a shell, a signal interface, an air inlet pipe and a clamping assembly, one side of the shell is fixedly connected with the signal interface, and a certain angle is arranged between the signal interface and the shell. The air inlet pipe is arranged at the bottom end of the shell and communicates with the interior of the shell, the clamping assembly is arranged at the bottom end of the shell, the air inlet pipe is located in the clamping assembly, and the clamping assembly is used for connecting a hose and the air inlet pipe in a clamped mode, so that tighter connection can be provided; the possibility of gas leakage is reduced, the hose is prevented from loosening or falling off in the operation process, the stability and reliability of the system are improved, good contact between the gas inlet pressure sensor and the gas inlet pipe is kept through stable connection, and therefore the accuracy and reliability of measurement are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intake pressure sensors, and more particularly to an automobile pressure sensor. Background Art

[0002] The intake pressure sensor is a sensor used to measure the pressure in the engine's intake manifold. Its main function is to convert the intake pressure signal into an electrical signal and transmit it to the engine control unit (ECU). The working principle of the intake pressure sensor is based on the piezoresistive effect. When the intake pressure acts on the sensor's diaphragm, the diaphragm will produce a slight deformation, causing the resistance value of the piezoresistor to change. The sensor converts these changes in resistance value into electrical signals and transmits them to the ECU. If the intake pressure sensor fails, the ECU will not be able to accurately control the engine's operation, resulting in reduced engine performance, increased fuel consumption, and excessive emissions. The intake pressure sensor is usually installed on the intake manifold and works together with other sensors such as the intake air temperature sensor and air flow sensor to provide the engine with accurate intake information. It is an indispensable part of modern automobile engine control systems.

[0003] Chinese patent publication number CN204758206U discloses a new intake air pressure sensor equipped with a high-temperature-resistant hose. One end of the hose is connected to the pagoda head of the intake air pressure sensor, and the other end is connected to the supercharged intake pipe. Because the sensor is sealed internally, the rubber hose effectively reduces the heat radiation from the high-temperature gas to the sensor. By measuring the temperature of the high-temperature gas, the length of the rubber hose is adjusted to keep the sensor within normal operating temperature. This new intake air pressure sensor solves the problem of being unable to measure the high-temperature intake air pressure after supercharging when upgrading to electronically controlled EGR in supercharged, non-intercooled engines. By changing the connection method, it solves the problem that traditional intake air pressure sensors cannot withstand temperatures exceeding 135°C.

[0004] However, the above-mentioned existing technical solutions have the following defects: the sealing strength of the connection between the high-temperature resistant hose and the intake pressure sensor is low, and the high-temperature resistant hose and the intake pressure sensor have no fixed structure, which is prone to loosening or falling off, affecting the working quality of the intake pressure sensor, reducing the accuracy of the intake pressure sensor detection, and increasing maintenance costs.

[0005] Therefore, it is necessary to provide an automotive pressure sensor to solve the above problems. Utility Model Content

[0006] The utility model provides an automobile pressure sensor, which can improve the problem in the related art that the connection between a high-temperature resistant hose and an intake pressure sensor is easily loosened.

[0007] An embodiment of the present application provides an automotive pressure sensor, comprising a shell, a signal interface, an intake pipe, and a clamping assembly. The signal interface is fixedly connected to one side of the shell, and a certain angle is set between the signal interface and the shell. The intake pipe is provided on the bottom end of the shell, and the intake pipe is connected to the interior of the shell. The clamping assembly is provided on the bottom end of the shell, and the intake pipe is located in the clamping assembly. The clamping assembly is used to clamp the hose to the intake pipe.

[0008] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: when the staff uses the intake pressure sensor, they electrically connect it to the ECU through the signal connector, then insert the high-temperature resistant hose into the intake pipe, and then clamp the high-temperature resistant hose to the intake pipe through the clamping assembly to complete the installation of the intake pressure sensor.

[0009] An embodiment of the present application provides an automotive pressure sensor, which can provide a tighter connection through the arrangement of a housing, a signal interface, an intake pipe, and a clamping assembly, reduce the possibility of gas leakage, ensure that the intake pressure sensor can accurately measure the intake pressure, prevent the hose from loosening or falling off during operation, and improve the stability and reliability of the system. The stable connection helps to maintain good contact between the intake pressure sensor and the intake pipe, thereby improving the accuracy and reliability of the measurement.

[0010] In some embodiments, the air intake pipe is hollow, and a plurality of circumferentially arranged first through holes are opened on the lower end of the air intake pipe, and the side walls of the first through holes are all arranged toward the axis of the air intake pipe. A rubber sealing ring is provided on the end of the air intake pipe away from the first through hole, and fixing rings are provided on both sides of the rubber sealing ring.

[0011] In some embodiments, the clamping assembly includes a clamping sleeve, a rotating sleeve and a clamping plate. The clamping sleeve is arranged on the bottom end of the shell, and the air inlet pipe is located inside the clamping sleeve. The outer surface of the clamping sleeve is provided with an external thread. A clamping plate is provided on the bottom end of the clamping sleeve, and there are multiple clamping plates. An internal thread is provided on the inner wall of the rotating sleeve. The rotating sleeve is threadedly connected to the clamping sleeve through the internal thread and the external thread. An annular protrusion is provided on the bottom end of the rotating sleeve, and the diameter of the top end of the rotating sleeve is larger than the diameter of the bottom end of the rotating sleeve.

[0012] In some embodiments, ear plates are fixedly connected to both sides of the shell, a second through hole is opened on the ear plates, and an inclined block is provided on the ear plates, one side of the inclined block is fixedly connected to the ear plates, and the other side of the inclined block is fixedly connected to the shell.

[0013] In some embodiments, the bottom surface of the signal interface is provided with a plurality of reinforcing blocks connected to the shell, the bottom surface of the reinforcing block (15) and the bottom surface of the shell (1) are on the same plane, a plurality of positioning blocks are provided on the side of the bottom surface of the signal interface away from the shell, and a buckle is provided on the top surface of the signal interface.

[0014] In some embodiments, a third through hole is provided on the signal interface, an insert is provided on the housing, and the insert is located in the third through hole, and a plurality of the inserts are provided.

[0015] In some embodiments, the signal interface, ear plate, shell and air intake pipe are all integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an automobile pressure sensor of the present utility model;

[0017] Figure 2 This is a bottom view of an automobile pressure sensor according to the present utility model;

[0018] Figure 3 This is a cross-sectional view of an automobile pressure sensor according to the present utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Description of the numbers in the figure:

[0021] 1. Housing; 2. Signal interface; 3. Inlet pipe; 4. Insert; 5. Clamping assembly; 51. Clamping sleeve; 52. Rotating sleeve; 53. Clamping plate; 6. Rubber sealing ring; 7. External thread; 8. Internal thread; 9. Annular protrusion; 10. First through hole; 11. Second through hole; 12. Fixing ring; 13. Ear plate; 14. Bevel block; 15. Reinforcement block; 16. Positioning block; 17. Buckle; 18. Third through hole. DETAILED DESCRIPTION

[0022] The sealing strength of the connection between the high-temperature resistant hose and the intake pressure sensor is low, and the high-temperature resistant hose and the intake pressure sensor have no fixed structure, which makes it easy for the hose to loosen or fall off, affecting the working quality of the intake pressure sensor, reducing the accuracy of the intake pressure sensor detection, and increasing maintenance costs.

[0023] Based on this, in order to improve the problem of loose connection between the high temperature resistant hose and the intake pressure sensor existing in the related art.

[0024] See also Figure 1 and Figure 4A vehicle pressure sensor includes a housing 1, a signal interface 2, an intake pipe 3, and a clamping assembly 5. The signal interface 2 is fixedly connected to one side of the housing 1, and a certain angle is set between the signal interface 2 and the housing 1. The intake pipe 3 is set on the bottom end of the housing 1, and the intake pipe 3 is connected to the interior of the housing 1. The clamping assembly 5 is set on the bottom end of the housing 1, and the intake pipe 3 is located in the clamping assembly 5. The clamping assembly 5 is used to clamp the hose to the intake pipe 3.

[0025] Optionally, in some embodiments, see Figure 3 and Figure 4 The air intake pipe 3 is hollow, and a plurality of first through holes 10 arranged in a circumferential manner are opened on the lower end of the air intake pipe 3. The side walls of the first through holes 10 are all arranged toward the axis of the air intake pipe 3. A rubber sealing ring 6 is provided on one end of the air intake pipe 3 away from the first through hole 10. A fixing ring 12 is provided on both sides of the rubber sealing ring 6. The clamping assembly 5 includes a clamping sleeve 51, a rotating sleeve 52 and a clamping plate 53. The clamping sleeve 51 is provided on the bottom end of the housing 1, and the air intake pipe 3 is located inside the clamping sleeve 51, the outer surface of the clamping sleeve 51 is provided with an external thread 7, the bottom end of the clamping sleeve 51 is provided with a clamping plate 53, and the clamping plates 53 are provided in plurality. The inner wall of the rotating sleeve 52 is provided with an internal thread 8, and the rotating sleeve 52 is threadedly connected to the clamping sleeve 51 through the internal thread 8 and the external thread 7. The bottom end of the rotating sleeve 52 is provided with an annular protrusion 9, and the diameter of the top end of the rotating sleeve 52 is larger than the diameter of the bottom end of the rotating sleeve 52.

[0026] With such arrangement, when the staff uses the vehicle intake pressure sensor, the staff inserts the high-temperature resistant hose between the clamping sleeve 51 and the intake pipe 3, so that the outer wall of the high-temperature resistant hose abuts against the inner wall of the clamping sleeve 51, the inner wall of the high-temperature resistant hose abuts against the outer wall of the intake pipe 3, and the inner wall of the high-temperature resistant hose abuts against the rubber sealing ring 6 provided at the upper end of the intake pipe 3, thereby enhancing the sealing between the hose and the intake pipe 3 and preventing air leakage or loosening. Then the staff rotates the rotating sleeve 52, and the internal thread 8 provided on the inner wall of the rotating sleeve 52 is threadedly connected with the external thread 7 provided on the clamping sleeve 51, so that the rotating sleeve 52 gradually moves toward the housing 1. As the rotating sleeve 52 moves, the annular protrusion 9 provided at the bottom end of the rotating sleeve 52 gradually contacts the clamping plate 53. With the displacement of the rotating sleeve 52, the annular protrusion 9 gradually squeezes the clamping plate 53 toward the high-temperature resistant hose, fixing the high-temperature resistant hose on the intake pipe 3. The staff then stops rotating the rotating sleeve 52. This can provide a tighter connection, reduce the possibility of gas leakage, ensure that the intake pressure sensor can accurately measure the intake pressure, prevent the hose from loosening or falling off during operation, improve the stability and reliability of the system, and help maintain the stability of the connection between the intake pressure sensor and the high-temperature resistant hose, thereby improving the accuracy and reliability of the measurement. When the staff needs to inspect the intake pressure sensor, they can rotate the rotating sleeve 52 to make the clamping plate 53 gradually move away from the intake pipe 3, and detach the high-temperature resistant hose from the intake pipe 3, making it convenient for the staff to inspect the pressure sensor and improving the portability of inspection or maintenance.

[0027] Optionally, in some embodiments, see Figure 1 , ear plates 13 are fixedly connected to both sides of the shell 1, a second through hole 11 is opened on the ear plate 13, and an inclined block 14 is provided on the ear plate 13, one side of the inclined block 14 is fixedly connected to the ear plate 13, and the other side of the inclined block 14 is fixedly connected to the shell 1.

[0028] With such arrangement, when the staff uses the intake pressure sensor, they can fix the intake pressure sensor to the interior of the car through the ear plate 13 and the second through hole 11 provided on the ear plate 13, thereby preventing the intake pressure sensor from falling off due to bumps during driving of the car and causing damage to the car, thereby improving the stability and reliability of the car.

[0029] Optionally, in some embodiments, see Figure 1 and Figure 2The bottom surface of the signal interface 2 is provided with several reinforcement blocks 15 connected to the shell 1, and the bottom surface of the reinforcement block 15 is on the same plane as the bottom surface of the shell 1. Several positioning blocks 16 are provided on the side of the bottom surface of the signal interface 2 away from the shell 1. A snap 17 is provided on the top surface of the signal interface 2. A third through hole 18 is opened on the signal interface 2. An insert 4 is provided on the shell 1, and the insert 4 is located in the third through hole 18. There are multiple inserts 4. The signal interface 2, ear plate 13, shell 1 and intake pipe 3 are all integrally formed.

[0030] With this arrangement, after the staff fixes the intake pressure sensor, they electrically connect it to the ECU through the plug 4 of the third through hole 18, which facilitates the connection between the signal interface 2 and the signal transmission line, increases the connection strength and stability, and the signal interface 2, ear plate 13, shell 1 and intake pipe 3 are all integrally formed to extend the service life and increase the connection strength.

[0031] Working principle: When using the vehicle intake pressure sensor, the staff inserts the high-temperature resistant hose between the clamping sleeve 51 and the intake pipe 3, so that the outer wall of the high-temperature resistant hose abuts against the inner wall of the clamping sleeve 51, the inner wall of the high-temperature resistant hose abuts against the outer wall of the intake pipe 3, and the inner wall of the high-temperature resistant hose abuts against the rubber sealing ring 6 provided at the upper end of the intake pipe 3, thereby enhancing the sealing between the hose and the intake pipe 3 and preventing air leakage or loosening. Then the staff rotates the rotating sleeve 52, and the internal thread 8 provided on the inner wall of the rotating sleeve 52 is threadedly connected with the external thread 7 provided on the clamping sleeve 51, so that the rotating sleeve 52 gradually moves toward the housing 1. As the rotating sleeve 52 moves, the annular protrusion 9 provided at the bottom end of the rotating sleeve 52 is gradually Gradually comes into contact with the clamping plate 53. As the rotating sleeve 52 moves, the annular protrusion 9 gradually squeezes the clamping plate 53 toward the high-temperature resistant hose, fixing the high-temperature resistant hose on the intake pipe 3. Then the staff stops rotating the rotating sleeve 52. When the staff needs to inspect the intake pressure sensor, the rotating sleeve 52 can be rotated to make the clamping plate 53 gradually move away from the intake pipe 3, and the high-temperature resistant hose can be separated from the intake pipe 3, which is convenient for the staff to inspect the pressure sensor and improves the portability of inspection or maintenance. Then, the intake pressure sensor is fixed to the interior of the car through the ear plate 13 and the second through hole 11 set on the ear plate 13, and then electrically connected to the ECU through the plug 4 of the third through hole 18, which facilitates the connection between the signal interface 2 and the signal transmission line.

[0032] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An automotive pressure sensor, characterized in that: The invention comprises a shell (1), a signal interface (2), an air intake pipe (3) and a clamping assembly (5), wherein the signal interface (2) is fixedly connected to one side of the shell (1), and a certain angle is set between the signal interface (2) and the shell (1), the air intake pipe (3) is set on the bottom end of the shell (1), and the air intake pipe (3) is communicated with the inside of the shell (1), the clamping assembly (5) is set on the bottom end of the shell (1), and the air intake pipe (3) is located in the clamping assembly (5), and the clamping assembly (5) is used to clamp the hose to the air intake pipe (3).

2. The automotive pressure sensor according to claim 1, characterized in that: The air intake pipe (3) is hollow, and a plurality of circumferentially arranged first through holes (10) are provided on the lower end of the air intake pipe (3). The side walls of the first through holes (10) are all arranged toward the axis of the air intake pipe (3). A rubber sealing ring (6) is provided on one end of the air intake pipe (3) away from the first through hole (10), and fixing rings (12) are provided on both sides of the rubber sealing ring (6).

3. The automotive pressure sensor according to claim 2, characterized in that: The clamping assembly (5) includes a clamping sleeve (51), a rotating sleeve (52) and a clamping plate (53), the clamping sleeve (51) is arranged on the bottom end of the housing (1), and the air inlet pipe (3) is located inside the clamping sleeve (51), the outer surface of the clamping sleeve (51) is provided with an external thread (7), the bottom end of the clamping sleeve (51) is provided with a clamping plate (53), and the clamping plates (53) are provided in plurality, the inner wall of the rotating sleeve (52) is provided with an internal thread (8), the rotating sleeve (52) is threadedly connected to the clamping sleeve (51) through the internal thread (8) and the external thread (7), the bottom end of the rotating sleeve (52) is provided with an annular protrusion (9), and the diameter of the top end of the rotating sleeve (52) is larger than the diameter of the bottom end of the rotating sleeve (52).

4. The automotive pressure sensor according to claim 3, characterized in that: Ear plates (13) are fixedly connected to both sides of the shell (1), a second through hole (11) is provided on the ear plate (13), and an inclined block (14) is provided on the ear plate (13), one side of the inclined block (14) is fixedly connected to the ear plate (13), and the other side of the inclined block (14) is fixedly connected to the shell (1).

5. The automotive pressure sensor according to claim 4, characterized in that: The bottom surface of the signal interface (2) is provided with a plurality of reinforcing blocks (15) connected to the shell (1), and the bottom surface of the reinforcing blocks (15) and the bottom surface of the shell (1) are on the same plane. A plurality of positioning blocks (16) are provided on the side of the bottom surface of the signal interface (2) away from the shell (1), and a buckle (17) is provided on the top surface of the signal interface (2).

6. The automotive pressure sensor according to claim 5, characterized in that: A third through hole (18) is provided on the signal interface (2), an insert (4) is provided on the housing (1), and the insert (4) is located in the third through hole (18), and a plurality of inserts (4) are provided.

7. The automotive pressure sensor according to claim 6, characterized in that: The signal interface (2), the ear plate (13), the housing (1) and the air intake pipe (3) are all integrally formed.

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