Small built-in tire pressure sensor

Abstract

The utility model discloses a small built-in tire pressure sensor, and belongs to the technical field of tire pressure sensors. Comprising a detection piece and an execution piece, the detection piece comprises a first shell and a second shell, the first shell is installed on the bottom face of the second shell, a compressor is installed in the second shell, a counter bore is formed in the center of the bottom face of the first shell, and a threaded hole is formed in the center of the top face of the counter bore; a threaded sleeve is installed at the center of the top face of the connector, a pressure diaphragm is installed in the threaded sleeve, an air hole is formed in the bottom face of the connector and communicated with the pressure diaphragm, the threaded sleeve is in threaded meshing connection with the threaded hole, a driving source circulates in the air hole and the threaded sleeve, and the pressure diaphragm deforms under the action of the driving source and extrudes the pressure diaphragm. According to the small built-in tire pressure sensor, the purpose of quickly replacing the failed pressure diaphragm can be achieved, so that the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure sensors, in particular to a small built-in tire pressure sensor. Background Art

[0002] A pressure sensor is a device or apparatus that senses pressure signals and converts them into a usable electrical output signal according to certain rules. It typically consists of a pressure-sensitive element and a signal processing unit. Depending on the test pressure type, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors.

[0003] For example, a small built-in tire pressure sensor with Chinese patent publication number CN207902045U includes a sensor body, a smart computing cover fixedly provided on the top of the sensor body, a connector fixedly provided on the right end of the smart computing cover, a data cable fixedly connected to the right side of the connector, and a data plug fixedly connected to the left end of the data cable for data connection with the smart computing cover, a data plug fixedly connected to the right end of the data cable, and a signal connection between the data cable and the data cable, an indicator light fixedly provided on the left end of the top surface of the smart computing cover, and a cylindrical pressure measuring head fixedly provided on the bottom of the smart computing cover;

[0004] This small, built-in tire pressure sensor is compact and can be rotatably installed into the tire's air hole. It can be inserted into the tire's air hole through the air inlet to test the pressure. This achieves the effect of a small pressure sensor and can be installed on various tire styles, solving the problem of previous large pressure sensors that could not be installed on smaller tires. However, over time, the material properties of the pressure diaphragm inside it will gradually degrade. Long-term exposure to complex chemical environments (such as chemicals produced by aging rubber inside the tire) and physical environments (such as constantly changing air pressure and temperature) will cause fatigue and aging of the diaphragm. Its elastic modulus will change, and it will be prone to irreversible deformation, just like a rubber band that loses its elasticity after being stretched for a long time. This will cause the relationship between the signal output by the tire pressure sensor and the actual tire pressure to deviate. In addition, this technical solution does not have the function of replacing the pressure diaphragm. Therefore, after long-term use, the tire pressure sensor needs to be replaced as a whole, which will increase the cost of use. Utility Model Content

[0005] The purpose of the present utility model is to provide a small built-in tire pressure sensor to solve the problems raised in the above background technology.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A small built-in tire pressure sensor includes a detection part and an actuator, the detection part includes a first shell and a second shell, the first shell is installed on the bottom surface of the second shell, and a compressor is installed inside the second shell, a countersunk hole is opened at the center of the bottom surface of the first shell, and a threaded hole is opened at the center of the top surface of the countersunk hole, the actuator includes a connecting head, a threaded sleeve is installed at the center of the top surface of the connecting head, a pressure diaphragm is installed inside the threaded sleeve, an air hole is installed on the bottom surface of the connecting head, and the air hole and the pressure diaphragm are connected, the threaded sleeve and the threaded hole are threadedly engaged, a driving source flows through the air hole and the threaded sleeve, and the pressure diaphragm is deformed and squeezed under the action of the driving source.

[0008] Specifically, by rotating the connector, the threaded sleeve can be disengaged from the threaded hole, and the user can remove the failed pressure diaphragm from the sensor and install the connector with a new pressure diaphragm on the original sensor.

[0009] Furthermore, a pair of sealing rings are installed on the outer side of the connector, the diameter difference between the connector and the countersunk hole is smaller than the ring width of the sealing ring, and the connector moves in the countersunk hole.

[0010] Specifically, after the connector is installed in the countersunk hole, the pair of sealing rings will be squeezed and deformed, thereby blocking the gap between the connector and the countersunk hole, ensuring the sealing between the connector and the countersunk hole.

[0011] Furthermore, the driving source is an air source.

[0012] Furthermore, a through hole is provided at the center of the bottom surface of the first shell, and the pressure diaphragm is deformed in the through hole.

[0013] Furthermore, a smart computing cover is installed on the top surface of the second shell, a data line is connected to the side of the smart computing cover, and the smart computing cover is also data-connected to the compressor.

[0014] Furthermore, the pressure diaphragm is made of aluminum, and the middle position of the top of the pressure diaphragm is convex.

[0015] Specifically, when the car is driving, the gas in the tire will generate upward pressure on the pressure diaphragm through the air holes. The pressure diaphragm will therefore deform upward in the through-hole and hit the compressor. The compressor has the function of detecting pressure, so it can transmit the detected pressure data to the smart computing cover. The smart computing cover will calculate the pressure range. If the pressure range is not within the range of sufficient tire air, the smart computing cover will transmit the information to the interior of the car via the data cable, prompting the driver to inflate the car.

[0016] Furthermore, the outer side of the first shell is provided with threads.

[0017] Specifically, the first housing is inserted into the air hole of the automobile tire, at which point the air hole and the air hole are connected, and the data cable is plugged into the communication connector of the automobile.

[0018] Compared with the prior art, the beneficial effect of the present invention is that the small built-in tire pressure sensor can achieve the purpose of quickly replacing a failed pressure diaphragm, thereby reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a small built-in tire pressure sensor disclosed in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of a small built-in tire pressure sensor disclosed in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the small built-in tire pressure sensor disclosed in an embodiment of the present utility model.

[0022] In the figure: 100, detection part; 1001, first shell; 1002, second shell; 1003, smart computing cover; 1004, data cable; 1005, countersunk hole; 1006, threaded hole; 1007, through hole; 1008, compressor; 200, actuator; 2001, connector; 2002, threaded sleeve; 2003, pressure diaphragm; 2004, sealing ring; 2005, air hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 - Figure 3The utility model provides a technical solution: a small built-in tire pressure sensor, including a detection component 100 and an execution component 200, the detection component 100 includes a first shell 1001 and a second shell 1002, the first shell 1001 is installed on the bottom surface of the second shell 1002, and a compressor 1008 is installed inside the second shell 1002, a countersunk hole 1005 is opened at the center of the bottom surface of the first shell 1001, and a threaded hole 1006 is opened at the center of the top surface of the countersunk hole 1005, and the execution component 200 includes a connector 2001, a threaded sleeve 2002 is installed at the center of the top surface of the connector 2001, and the inner portion of the threaded sleeve 2002 is installed. A pressure diaphragm 2003 is installed, and an air hole 2005 is installed on the bottom surface of the connecting head 2001, and the air hole 2005 and the pressure diaphragm 2003 are connected, the threaded sleeve 2002 and the threaded hole 1006 are threadedly engaged, and a driving source flows through the air hole 2005 and the threaded sleeve 2002. Under the action of the driving source, the pressure diaphragm 2003 is deformed and squeezed. The threaded sleeve 2002 can be detached from the threaded hole 1006 by rotating the connecting head 2001. The user can remove the failed pressure diaphragm 2003 from the sensor and install the connecting head 2001 equipped with a new pressure diaphragm 2003 on the original sensor.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 - Figure 3 The utility model provides a technical solution: a small built-in tire pressure sensor, a pair of sealing rings 2004 are installed on the outside of the connector 2001, the diameter difference between the connector 2001 and the countersunk hole 1005 is smaller than the ring width of the sealing ring 2004, the connector 2001 moves in the countersunk hole 1005, and after the connector 2001 is installed in the countersunk hole 1005, the pair of sealing rings 2004 will be squeezed and deformed, thereby blocking the gap between the connector 2001 and the countersunk hole 1005, ensuring the sealing between the connector 2001 and the countersunk hole 1005.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1 - Figure 3 The utility model provides a technical solution: a small built-in tire pressure sensor, the outer side of the first shell 1001 is provided with a thread, the first shell 1001 is inserted into the air hole of the car tire, at this time the air hole 2005 is connected to the air hole, the data line 1004 is inserted into the communication connector of the car, the center of the bottom surface of the first shell 1001 is provided with a through hole 1007, the pressure diaphragm 2003 is deformed in the through hole 1007 and squeezes the compressor 1008, the top surface of the second shell 1002 is installed with an intelligent computing cover 1003, the side data of the intelligent computing cover 1003 is connected with the data line 1004, the intelligent computing cover 1003 is also connected to the compressor 1008 data, the pressure diaphragm 2 003 is made of aluminum, and the middle position of the top of the pressure diaphragm 2003 is convex. When the car is driving, the gas in the tire will generate upward pressure on the pressure diaphragm 2003 through the air hole 2005. The pressure diaphragm 2003 is therefore deformed upward in the through hole 1007 and hits the compressor 1008. The compressor 1008 has the function of detecting pressure, so it can transmit the detected pressure data to the smart computing cover 1003. The smart computing cover 1003 will calculate the pressure range. If the pressure range is not within the range of sufficient tire air, the smart computing cover 1003 will transmit the information to the interior of the car, which will be transmitted by the data line 1004 to prompt the driver to inflate the car.

[0029] Specifically, the working principle of this small built-in tire pressure sensor is as follows: when in use, the first shell 1001 is inserted into the air hole of the car tire. At this time, the air hole 2005 and the air hole are connected, and the data line 1004 is plugged into the communication connector of the car. When the car is driving, the gas in the tire will pass through the air hole 2005 to generate upward pressure on the pressure diaphragm 2003. The pressure diaphragm 2003 is therefore deformed upward in the through hole 1007 and hits the compressor 1008. The compressor 1008 has the function of detecting pressure, so it can detect the pressure data. The data is transmitted to the smart computing cover 1003, and the smart computing cover 1003 will calculate the pressure range. If the pressure range is not within the range of sufficient tire inflation, the smart computing cover 1003 will transmit the information to the interior of the car, which will be transmitted by the data cable 1004, prompting the driver to inflate the car. Rotating the connector 2001 can disengage the threaded sleeve 2002 from the threaded hole 1006, and the user can remove the failed pressure diaphragm 2003 from the sensor and install the connector 2001 equipped with a new pressure diaphragm 2003 on the original sensor.

Claims

1. A small built-in tire pressure sensor, characterized in that: The invention comprises a detection member (100) and an execution member (200), wherein the detection member (100) comprises a first shell (1001) and a second shell (1002), wherein the first shell (1001) is mounted on the bottom surface of the second shell (1002), and a compressor (1008) is mounted inside the second shell (1002), a countersunk hole (1005) is provided at the center of the bottom surface of the first shell (1001), and a threaded hole (1006) is provided at the center of the top surface of the countersunk hole (1005), and the execution member (200) comprises a connector (2001), and the connector (2002) is provided at the center of the top surface of the first shell (1001). 01) is installed at the center of the top surface of the threaded sleeve (2002), and a pressure diaphragm (2003) is installed inside the threaded sleeve (2002). An air hole (2005) is installed on the bottom surface of the connecting head (2001), and the air hole (2005) and the pressure diaphragm (2003) are connected. The threaded sleeve (2002) and the threaded hole (1006) are threadedly engaged. A driving source flows through the air hole (2005) and the threaded sleeve (2002), and the pressure diaphragm (2003) is deformed and squeezed by the driving source.

2. A small built-in tire pressure sensor according to claim 1, characterized in that: A pair of sealing rings (2004) are installed on the outside of the connector (2001), the diameter difference between the connector (2001) and the countersunk hole (1005) is smaller than the ring width of the sealing ring (2004), and the connector (2001) moves in the countersunk hole (1005).

3. The small built-in tire pressure sensor according to claim 1, characterized in that: The driving source is an air source.

4. The small built-in tire pressure sensor according to claim 1, characterized in that: A through hole (1007) is provided at the center of the bottom surface of the first shell (1001), and the pressure diaphragm (2003) is deformed in the through hole (1007).

5. The small built-in tire pressure sensor according to claim 1, characterized in that: The top surface of the second shell (1002) is installed with an intelligent computing cover (1003), the side surface of the intelligent computing cover (1003) is connected with a data line (1004), and the intelligent computing cover (1003) is also connected with the compressor (1008).

6. The small built-in tire pressure sensor according to claim 1, characterized in that: The pressure diaphragm (2003) is made of aluminum, and the middle position of the top of the pressure diaphragm (2003) is convex.

7. The small built-in tire pressure sensor according to claim 1, characterized in that: The outer side of the first shell (1001) is provided with threads.

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