Tire burst detection sensor and vehicle

Abstract

The utility model discloses a tire burst detection sensor and a vehicle, the tire burst detection sensor comprises a tire burst shell, a sealing diaphragm is arranged in the tire burst shell, the sealing diaphragm divides an inner cavity of the tire burst shell into a first cavity and a second cavity, and the circulation sectional area of a capillary tube is smaller than that of a communication port; the sealing diaphragm is suitable for deforming when the pressure in the second cavity is greater than that of the first cavity and enabling the electric control structure to send out a tire burst signal; the capillary tube is integrally formed in the wall face of the tire burst shell in an injection molding mode. According to the tire burst detection sensor, triggering is timely and efficient, mistaken touch is avoided, the safety performance of a vehicle is greatly improved, the structure is simple, cost is reduced, the overall height of the tire burst detection sensor is reduced, interference between the tire burst detection sensor and the rim of a tire hub is avoided when the tire burst detection sensor is installed, and the safety of the vehicle is improved. The reliability of the tire burst detection sensor is improved, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tire pressure monitoring, in particular to a tire burst detection sensor and a vehicle with the tire burst detection sensor. Background Art

[0002] The tire burst detection sensor is used to monitor the pressure of an automobile tire in real time to detect whether the tire has a rapid air leak, and when the tire bursts and leaks air, it sends a tire burst signal to the vehicle, so that the vehicle can further control the vehicle body according to the tire burst signal to ensure the driving safety of the vehicle.

[0003] In the prior art, some tire burst monitoring sensors are screwed onto the tire valve core through a threaded housing. Its structure is complex and the structural height is relatively high. For some automobile tires with a relatively high bead seat of the wheel hub, interference will occur and the sensor cannot be installed normally, resulting in the elastic conductive sheet being too close to the negative electrode of the battery. When the tire pressure changes dynamically and the vehicle speed is too fast, the risk of false triggering is relatively high. Once false triggering occurs, there will be a risk of the vehicle stopping or performing wrong control; some tire burst monitoring sensors form a capillary tube by opening holes in the tire burst housing or install a rubber plug to fix the capillary tube, which cannot ensure the sealing performance of the tire burst housing, and the structure is complex and the height is relatively high. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a tire burst detection sensor. The tire burst detection sensor can trigger a tire burst in a timely and efficient manner without false triggering, greatly improving the safety performance of the vehicle. The structure is simple, the cost is reduced, the overall height of the tire burst detection sensor is reduced, thereby avoiding interference with the wheel rim of the tire hub when installing the sensor, improving the reliability of the tire burst detection sensor, and having a wide range of applications.

[0005] The tire burst detection sensor according to an embodiment of the utility model includes: a tire burst housing, a sealing diaphragm is arranged in the tire burst housing, the sealing diaphragm divides the inner cavity of the tire burst housing into a first cavity and a second cavity, the first cavity is communicated with the outside of the tire burst housing through a communication port, the second cavity is communicated with the outside of the tire burst housing through a capillary tube, the flow cross-sectional area of the capillary tube is smaller than that of the communication port, the tire burst housing is connected with an electronic control structure, and the sealing diaphragm is adapted to deform when the pressure in the second cavity is greater than that in the first cavity and make the electronic control structure send out a tire burst signal; wherein, the capillary tube is integrally injection-molded in the wall surface of the tire burst housing.

[0006] According to the tire burst detection sensor of the embodiment of the present utility model, by arranging the tire burst housing in the detection cavity, the first cavity and the second cavity are respectively communicated with the outside of the tire burst housing. When a tire burst occurs, a pressure difference is generated between the first cavity and the second cavity. When the pressure in the second cavity is greater than the pressure in the first cavity, the sealing diaphragm deforms, causing the electronic control structure to immediately send out a tire burst signal. The tire burst trigger is timely and efficient, without false triggering, greatly improving the safety performance of the vehicle. By integrally injection molding the capillary tube into the wall surface of the tire burst housing, the structural stability and sealing performance of the tire burst housing are improved, the structure is simple, the cost is reduced, the overall height of the tire burst detection sensor is reduced, thereby avoiding interference with the rim of the tire hub when installing the tire burst detection sensor, and improving the reliability of the tire burst detection sensor, with a wide range of applications.

[0007] According to the tire burst detection sensor of some embodiments of the present utility model, the electronic control structure includes an electronic control board, a first conductive member, a second conductive member, and an antenna. The first conductive member, the second conductive member, and the antenna are respectively electrically connected to the electronic control board. The sealing diaphragm is adapted to push the first conductive member into pressing contact with the second conductive member, and to conduct the electronic control circuit of the electronic control board to control the antenna to send out a tire burst signal.

[0008] According to the tire burst detection sensor of some embodiments of the present utility model, the first cavity and the second cavity are spaced apart and distributed along a first direction; wherein, the first conductive member is attached to the sealing diaphragm, the second conductive member is spaced apart from the first conductive member, and the sealing diaphragm is adapted to push the first conductive member to deform along the first direction to be in fitting contact with the second conductive member.

[0009] According to the tire burst detection sensor of some embodiments of the present utility model, the antenna and the tire burst housing are sequentially distributed along a second direction, and the second direction is perpendicular to the first direction.

[0010] According to the tire burst detection sensor of some embodiments of the present utility model, the electronic control board includes a main board body and a tire pressure sensing chip. The tire pressure sensing chip is arranged on one side of the main board body and protrudes and extends along the first direction. The tire burst housing is connected to the main board body and is on the same side of the main board body as the tire pressure sensing chip. The antenna is installed at the end of the tire pressure sensing chip.

[0011] According to the tire burst detection sensor of some embodiments of the present utility model, the second conductive member and the first conductive member are respectively electrically connected to the main board body through diversion pins.

[0012] According to the tire burst detection sensor of some embodiments of the present utility model, the second conductive member and the first conductive member are arranged in parallel and spaced apart.

[0013] According to some embodiments of the present utility model, the tire burst detection sensor further includes a power supply component, and the power supply component is electrically connected to the electronic control board; wherein, the power supply component is located on one side of the electronic control board, and the power supply component and the electronic control board are sequentially distributed along a first direction.

[0014] According to some embodiments of the present utility model, the tire burst detection sensor further includes a sensor housing, a detection cavity is formed in the sensor housing and a ventilation port communicating with the detection cavity is provided, and the tire burst housing is installed in the detection cavity.

[0015] According to some embodiments of the present utility model, a waterproof breathable membrane is provided at the ventilation port.

[0016] According to some embodiments of the present utility model, the tire burst detection sensor further includes a breathable membrane bracket, the breathable membrane bracket is connected to the sensor housing, and the waterproof breathable membrane is clamped between the breathable membrane bracket and the sensor housing.

[0017] According to some embodiments of the present utility model, the sensor housing includes a main housing and an installation cover, a detection cavity is formed in the main housing, the installation cover is connected to the main housing and closes the open end of the detection cavity, the ventilation port is provided on the installation cover, and a rubber sleeve is provided outside the main housing.

[0018] According to some embodiments of the present utility model, the capillary further includes a main pipe section, a first pipe section and a second pipe section, the main pipe section is spirally coiled and extended, the first pipe section and the second pipe section are connected to both ends of the main pipe section, a first air hole communicating with the second cavity is formed at the end of the first pipe section, and a second air hole communicating with the outside of the tire burst housing is formed at the end of the second pipe section.

[0019] The present utility model also proposes a vehicle.

[0020] According to the vehicle of the embodiments of the present utility model, the tire burst detection sensor described in any one of the above embodiments is provided.

[0021] The advantages of the vehicle and the above tire burst detection sensor over the prior art are the same, and will not be described herein again.

[0022] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is an exploded view of a tire burst detection sensor according to an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view of a tire burst detection sensor according to an embodiment of the present invention;

[0026] Figure 3 is a structural schematic diagram of a tire burst housing according to an embodiment of the present invention Figure 1 ;

[0027] Figure 4 is a structural schematic diagram of a tire burst housing according to an embodiment of the present invention Figure 2 ;

[0028] Figure 5 is a structural schematic diagram of a capillary tube according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] tire burst detection sensor 100,

[0031] sensor housing 1, rubber sleeve 11, attachment surface 111, mounting cover 12, detection cavity 13, air vent 14, main housing 15,

[0032] tire burst housing 2, first chamber 21, second chamber 22, sealing diaphragm 23, capillary tube 24, first air hole 241, second air hole 242, main pipe section 243, first pipe section 244, second pipe section 245,

[0033] electronic control board 31, main board body 311, tire pressure sensing chip 312, first conductive member 32, second conductive member 33, antenna 34, diversion pin 35,

[0034] power supply member 5, air permeable membrane bracket 6, waterproof and breathable membrane 7. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0037] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] The following refers to Figures 1 - 5 Describe a tire burst detection sensor 100 according to an embodiment of the present utility model. The tire burst detection sensor 100 triggers a tire burst in a timely and efficient manner, does not cause false triggering, greatly improves the safety performance of the vehicle, has a simple structure, reduces costs, reduces the overall height of the tire burst detection sensor 100, thereby avoiding interference with the rim of the tire hub when installing the tire burst detection sensor 100, improving the reliability of the tire burst detection sensor 100, and has a wide range of applications.

[0039] As Figures 1 - 5 shown, a tire burst detection sensor 100 according to an embodiment of the present utility model includes: a tire burst housing 2.

[0040] A sealing diaphragm 23 is provided inside the tire burst housing 2. The sealing diaphragm 23 divides the inner cavity of the tire burst housing 2 into a first chamber 21 and a second chamber 22. The first chamber 21 is communicated with the outside of the tire burst housing 2 through a communication port, and the second chamber 22 is communicated with the outside of the tire burst housing 2 through a capillary 24. The flow cross-sectional area of the capillary 24 is smaller than that of the communication port.

[0041] Specifically, the flat tire housing 2 is a key trigger component for the flat tire detection sensor 100 to detect flat tire conditions. It can be installed inside the tire for detection. A sealing diaphragm 23 is provided inside the flat tire housing 2. The sealing diaphragm 23 divides the inner cavity of the flat tire housing 2 into two non - communicating cavities, namely the first cavity 21 and the second cavity 22. The first cavity 21 is communicated with the outside of the flat tire housing 2 through a communication port. That is, the first cavity 21 and the external environment of the flat tire housing 2 can perform a certain gas exchange through the communication port, so that the air pressure in the first cavity 21 is kept consistent with the external environment of the flat tire housing 2. The second cavity 22 is communicated with the outside of the flat tire housing 2 through a capillary 24. That is, the second cavity 22 and the external environment of the flat tire housing 2 can perform a certain gas exchange through the capillary 24, so that the air pressure in the second cavity 22 is kept consistent with the external environment of the flat tire housing 2. It should be noted that the outside of the flat tire housing 2 can be communicated with the inside of the tire. Thus, when a flat tire does not occur, the gas outside the flat tire housing 2 is communicated with the gas inside the tire, and the gases in the first cavity 21 and the second cavity 22 are both communicated with the gas outside the flat tire housing 2, and the air pressure is kept consistent, that is, the air pressures in the first cavity 21 and the second cavity 22 are the same.

[0042] Among them, the flow cross - sectional area of the capillary 24 is smaller than that of the communication port. That is, the gas flow rate and velocity that can pass through the capillary 24 are less and slower than those of the communication port. Thus, the response of the second cavity 22 to air pressure changes is relatively lagging compared to the first cavity 21 and an obvious pressure difference effect can be generated. That is, it takes more time for the second cavity 22 to balance the pressure difference with the external environment of the flat tire housing 2, while the first cavity 21 can quickly balance the pressure difference with the external environment of the flat tire housing 2.

[0043] The flat tire housing 2 is connected with an electronic control structure. The sealing diaphragm 23 is adapted to deform when the pressure in the second cavity 22 is greater than the pressure in the first cavity 21 and cause the electronic control structure to send out a flat tire signal.

[0044] Specifically, when a flat tire does not occur, the air pressure outside the flat tire housing 2, in the first cavity 21 and in the second cavity 22 is the same as the air pressure inside the tire, maintaining a balanced state. At this time, the sealing diaphragm 23 remains in the initial state without deforming, so no flat tire signal is generated. When a flat tire occurs, the air pressure inside the tire drops rapidly. The gas in the first cavity 21 can quickly leak out to the outside of the flat tire housing 2, thus balancing the pressure difference with the air pressure inside the tire and keeping it consistent. However, due to the small flow cross - sectional area of the capillary 24, the gas cannot quickly discharge to balance the pressure difference in time. Thus, a pressure difference is generated between the second cavity 22 and the first cavity 21. At this time, the pressure in the second cavity 22 is greater than the pressure in the first cavity 21, and the sealing diaphragm 23 will deform to cause the electronic control structure to send out a flat tire signal. The receiver on the vehicle can receive the flat tire signal and perform further processing and vehicle body control to achieve vehicle body stability after a flat tire and ensure the safe driving of the vehicle.

[0045] Therefore, as long as a flat tire occurs and the air pressure inside the tire changes, resulting in a pressure difference between the first chamber 21 and the second chamber 22, such that the pressure in the second chamber 22 is greater than that in the first chamber 21, the sealing diaphragm 23 will deform to cause the electronic control structure to send out a flat tire signal. The flat tire trigger is timely and efficient, without false triggering, greatly improving the safety performance of the vehicle.

[0046] Furthermore, the capillary tube 24 is integrally injection-molded into the wall surface of the flat tire housing 2.

[0047] Specifically, in the traditional method of forming the capillary tube 24 by opening a hole in the flat tire housing 2 or installing a rubber plug to fix the capillary tube 24, the sealing performance of the flat tire housing 2 cannot be guaranteed. By integrally injection-molding the capillary tube 24 into the wall surface of the flat tire housing 2, the capillary tube 24 and the flat tire housing 2 are integrated into one body, improving the structural stability of the flat tire housing 2 and also ensuring its sealing performance. Thus, the stable formation of the pressure difference between the second chamber 22 and the first chamber 21 can be guaranteed. The second chamber 22 exchanges gas only through the capillary tube 24, avoiding gas leakage, and further ensuring the reliability of the use of the flat tire detection sensor 100. In addition, the integral injection molding also avoids the fixing and sealing structures such as fixing brackets, locking screws, and sealing rubber plugs required for fixing the capillary tube 24, thus greatly simplifying the structure, reducing the cost, and to a certain extent reducing the overall height of the flat tire detection sensor 100. Therefore, interference with the rim of the tire hub during the installation of the flat tire detection sensor 100 can be avoided, and even if a flat tire occurs, the hub will not rub against the flat tire detection sensor 100, causing damage to the flat tire detection sensor 100.

[0048] According to the flat tire detection sensor 100 of the embodiment of the present invention, by disposing the flat tire housing 2 inside the tire, the first chamber 21 and the second chamber 22 are respectively communicated with the outside of the flat tire housing 2. When a flat tire occurs, a pressure difference is generated between the first chamber 21 and the second chamber 22. When the pressure in the second chamber 22 is greater than the pressure in the first chamber 21, the sealing diaphragm 23 deforms to cause the electronic control structure to immediately send out a flat tire signal. The flat tire trigger is timely and efficient, without false triggering, greatly improving the safety performance of the vehicle. By integrally injection-molding the capillary tube 24 into the wall surface of the flat tire housing 2, the structural stability and sealing performance of the flat tire housing 2 are improved, the structure is simple, the cost is reduced, the overall height of the flat tire detection sensor 100 is reduced, thus avoiding interference with the rim of the tire hub during the installation of the flat tire detection sensor 100, improving the reliability of the flat tire detection sensor 100, and having a wide range of applications.

[0049] In some embodiments, the electric control structure includes an electric control board 31, a first conductive member 32, a second conductive member 33 and an antenna 34. The first conductive member 32, the second conductive member 33 and the antenna 34 are electrically connected to the electric control board 31 respectively. The sealing diaphragm 23 is suitable for pushing the first conductive member 32 and the second conductive member 33 into contact with each other, and making the electric control circuit of the electric control board 31 conductive to control the antenna 34 to send a tire blowout signal.

[0050] Specifically, Figure 1 and Figure 2 As shown, the electric control structure includes an electric control board 31, a first conductive member 32, a second conductive member 33 and an antenna 34. The electric control board 31 integrates circuit logic processing and signal processing capabilities, and has an electric control circuit. The first conductive member 32, the second conductive member 33 and the antenna 34 are electrically connected to the electric control board 31 respectively, that is, the first conductive member 32, the second conductive member 33 and the antenna 34 can transmit current and signals with the electric control board 31.

[0051] When there is no tire blowout, the pressure in the first cavity 21 is the same as the pressure in the second cavity 22, and a balanced state is maintained. At this time, the sealing diaphragm 23 maintains a stable structure without deformation. Figure 1 As shown, the first conductive member 32 and the second conductive member 33 are separated by a certain distance, that is, the first conductive member 32 and the second conductive member 33 are not conducting and are in a disconnected state, so that the electric control circuit is in a non-conducting state, and the antenna 34 does not send out a tire blowout signal.

[0052] When a tire blows out, since the gas in the second chamber 22 cannot be discharged quickly and in time, the pressure in the second chamber 22 is greater than the pressure in the first chamber 21. At this time, the sealing diaphragm 23 will be deformed and bulge toward the first chamber 21 to push the first conductive member 32 and the second conductive member 33 to press and contact each other. Even if the first conductive member 32 and the second conductive member 33 are turned on, so that the electric control circuit is in a turned-on state, the antenna 34 can send a tire blowout signal, and the receiver in the vehicle, such as a high-frequency receiving module installed on the C-pillar of the vehicle body, can receive the tire blowout signal transmitted from the antenna 34, and the receiver further transmits it to the vehicle domain control. Depending on the vehicle model, low-end vehicles can display it on the central control screen, and mid-to-high-end vehicles can automatically perform subsequent actions such as braking and suspension posture adjustment through vehicle control.

[0053] In some embodiments, the first cavity 21 and the second cavity 22 are spaced apart and distributed along the first direction; wherein the first conductive member 32 is attached to the sealing membrane 23, the second conductive member 33 is spaced apart from the first conductive member 32, and the sealing membrane 23 is suitable for pushing the first conductive member 32 to deform along the first direction to fit and contact with the second conductive member 33.

[0054] Specifically, the first direction may be a left-right direction, an up-down direction, etc., so that the first cavity 21 and the second cavity 22 may be spaced apart and distributed along the left-right direction, the up-down direction, or other directions.Figure 2 As shown, the first cavity 21 and the second cavity 22 are spaced apart in the up-and-down direction shown in the figure. The first cavity 21 is the upper cavity in the tire burst housing 2, and the second cavity 22 is the lower cavity in the tire burst housing 2. The first conductive member 32 is adhesively connected to the sealing diaphragm 23. The second conductive member 33 is located above the first conductive member 32 and spaced apart from the first conductive member 32 by a certain distance, and can be distributed in parallel or non-parallel. Thus, when the sealing diaphragm 23 deforms and bulges towards the first cavity 21, the sealing diaphragm 23 can push the first conductive member 32 to deform together towards the first direction, that is, the direction of the first cavity 21, so as to be in contact with the second conductive member 33 and conduct the electric control circuit.

[0055] Therefore, when the air pressure in the second cavity 22 increases, the sealing diaphragm 23 pushes the first conductive member 32 to deform to be in contact with the second conductive member 33 and conduct the electric control circuit, triggering a tire burst signal. This method is simple, reliable, flexible and convenient, and there will be no mis-touch conduction between the first conductive member 32 and the second conductive member 33 to trigger a tire burst signal, thereby reducing the risk of vehicle parking or incorrect control caused by mis-triggering of the tire burst signal.

[0056] In some embodiments, the antenna 34 and the tire burst housing 2 are sequentially distributed in the second direction, and the second direction is perpendicular to the first direction.

[0057] Specifically, the second direction can be the left-right direction, the up-down direction, etc. The first direction is perpendicular to the second direction, that is, when the first direction is the left-right direction, the second direction is the up-down direction; when the first direction is the up-down direction, the second direction is the left-right direction; when the first direction is other directions, the second direction is the direction perpendicular to it. As Figure 2 shown, the antenna 34 and the tire burst housing 2 are sequentially distributed in the second direction, that is, the left-right direction shown in the figure. The antenna 34 is located on the left side of the tire burst housing 2, so that the antenna 34 and the tire burst housing 2 are horizontally arranged, further reducing the height dimension of the tire burst detection sensor 100, and separating the antenna 34 from the tire burst housing 2, avoiding interference of the tire burst signal emitted by the antenna 34 by the metal parts of the tire burst housing 2 and affecting the smooth transmission of the tire burst signal.

[0058] In some embodiments, the electric control board 31 includes a main board body 311 and a tire pressure sensing chip 312. The tire pressure sensing chip 312 is provided on one side of the main board body 311 and protrudes and extends along the first direction. The tire burst housing 2 is connected to the main board body 311 and is on the same side of the main board body 311 as the tire pressure sensing chip 312. The antenna 34 is welded and installed on the top of the main board body 311.

[0059] Specifically, as Figure 2As shown, the electronic control board 31 includes a main board body 311 and a tire pressure sensing chip 312. The main board body 311 is configured in a plate shape, on which circuit components and other electronic components are provided. The tire pressure sensing chip 312 is disposed on one side of the main board body 311, and the tire pressure sensing chip 312 protrudes and extends upward along the first direction. The tire burst housing 2 is connected to the upper side of the main board body 311, that is, both the tire burst housing 2 and the tire pressure sensing chip 312 are located on the upper side of the main board body 311. In this way, it is beneficial to further reduce the overall height and volume of the tire burst detection sensor 100, so that the tire burst detection sensor 100 can be more easily installed in the tire.

[0060] Among them, the antenna 34 is installed on the upper part of the main board body 311, and the tire pressure sensing chip 312 is offset to avoid interference between the antenna 34 and the tire burst structure installed on the main board body 311 and the metal parts on the main board body 311, thereby facilitating the smooth transmission and reception of tire burst signals.

[0061] In some embodiments, the second conductive member 33 and the first conductive member 32 are respectively electrically connected to the main board body 311 through diversion pins 35.

[0062] Specifically, as Figure 3 and Figure 4 shown, the first conductive member 32 and the second conductive member 33 are respectively connected with diversion pins 35, and the diversion pins 35 are bent and connected to the second conductive member 33 and the first conductive member 32 respectively. In this way, it is beneficial to the connection between the second conductive member 33 and the first conductive member 32 and the main board body 311. As Figure 2 shown, the diversion pins 35 extend to the main board body 311 by fitting against the outer peripheral wall of the tire burst housing 2 and can be welded to the main board body 311, so as to realize the stable electrical connection between the second conductive member 33 and the first conductive member 32 and the main board body 311 respectively, enabling current and signals to flow freely between the conductive members and the main board body 311.

[0063] In practice, when the sealing diaphragm 23 pushes the first conductive member 32 into contact with the second conductive member 33 due to the change in the internal pressure of the tire, the current can flow into the main board body 311 through the diversion pins 35, thereby triggering the electronic control board 31 to emit a tire burst signal.

[0064] In some embodiments, as Figure 2 and Figure 3 shown, the second conductive member 33 and the first conductive member 32 are distributed in parallel at intervals to avoid accidental contact between the first conductive member 32 and the second conductive member 33 to conduct the circuit and emit a tire burst signal, thereby improving the reliability of the tire burst detection sensor 100.

[0065] In some embodiments, the tire burst detection sensor 100 further includes a power supply member 5, and the power supply member 5 is electrically connected to the electronic control board 31.

[0066] Specifically, the power supply component 5 can be configured as a button battery, a capacitor, or other components capable of storing electrical energy. The power supply component 5 is used to supply power to the electronic control board 31. It is electrically connected to the electronic control board 31 and can stably output voltage and current, which flows to the electronic control board 31 to ensure the normal operation of the electronic control board 31 and the electronic components thereon, and further ensure that the tire burst detection sensor 100 can continuously and accurately detect the tire state and send out a tire burst signal.

[0067] Among them, the power supply component 5 is located on one side of the electronic control board 31, and the power supply component 5 and the electronic control board 31 are arranged in sequence along the first direction.

[0068] Specifically, as Figure 2 shown, the power supply component 5 and the electronic control board 31 are arranged in sequence along the first direction, that is, the up and down direction shown in the figure. The power supply component 5 is located below the electronic control board 31. Such a setting makes the power supply component 5 located at the bottom of the tire burst detection sensor 100, which can effectively protect the power supply component 5 and prevent external foreign objects, such as water and dust, from entering the inside of the tire burst detection sensor 100 and damaging the power supply component 5, affecting the normal operation of the tire burst detection sensor 100. Thus, the overall performance and reliability of the tire burst detection sensor 100 can be improved. At the same time, it also makes the structure of the tire burst detection sensor 100 compact, makes full use of the internal space of the tire burst detection sensor 100 to reasonably arrange each component, is conducive to realizing the miniaturization and light weight of the tire burst detection sensor 100, and makes it easier to be integrated into the vehicle tire.

[0069] In the actual design, a tire pressure sensing chip 312 can also be provided on the electronic control board 31 to collect data such as temperature, air pressure, and acceleration, and improve the response accuracy and reliability of the tire burst detection sensor 100. Among them, since the tire burst detection sensor 100 of this embodiment only conducts the electric control circuit and generates power consumption when a tire burst occurs, and the response is stable, therefore, through software adjustment, the frequency of collecting data by the original tire pressure sensing chip 312 can be reduced, thereby greatly reducing the power consumption of the tire burst detection sensor 100 and increasing the service life of the tire burst detection sensor 100.

[0070] In some embodiments, the tire burst detection sensor 100 further includes a sensor housing 1. A detection cavity 13 is formed in the sensor housing 1 and a ventilation port 14 communicating with the detection cavity 13 is provided. The tire burst housing 1 is installed in the detection cavity 13.

[0071] Specifically, the sensor housing 1 is the external protection structure of the entire tire burst detection sensor 100, which can protect the internal components from being damaged and affected. Among them, as Figure 1As shown in the figure, a detection cavity 13 is formed inside the sensor housing 1 and a ventilation port 14 communicating with the detection cavity 13 is provided. That is to say, the inside of the sensor housing 1 is a hollow cavity to form the detection cavity 13. The detection cavity 13 is the main area for the flat tire detection sensor 100 to perform pressure detection. A ventilation port 14 communicating with the detection cavity 13 is also provided on the sensor housing 1. The ventilation port 14 is used to communicate with the external environment, for example, the inside of the tire, so that the gas in the detection cavity 13 and the inside of the tire can be exchanged, so that the air pressure in the detection cavity 13 and the inside of the tire is kept consistent, and the dynamic balance of the internal pressure of the detection cavity 13 is maintained.

[0072] Among them, the flat tire housing 2 is installed in the detection cavity 13, so that the first cavity 21 and the second cavity 22 communicate with the detection cavity 13. That is, the first cavity 21 and the detection cavity 13 communicate through a communication port and can perform gas exchange. The second cavity 22 and the detection cavity 13 communicate through a capillary 24 and can perform gas exchange. When a flat tire occurs, the gas in the first cavity 21 can quickly reach equilibrium with the detection cavity 13, while the second cavity 22 cannot quickly discharge the gas to reach equilibrium with the detection cavity 13, so a pressure difference is generated between the second cavity 22 and the first cavity 21. As Figure 1 shown, the flat tire housing 2 of this embodiment is offset and arranged in the sensor housing 1, above the right side of the main board body 311, adjacent to and spaced apart from the tire pressure sensing chip 312. Since the actual size of the tire pressure sensing chip 312 is relatively large, in this way, by reasonably arranging the installation positions of the flat tire housing 2 and the tire pressure sensing chip 312 in the sensor housing 1, the space utilization rate can be improved, the structure can be made more compact, the overall height of the flat tire detection sensor 100 is reduced, which is conducive to further miniaturization and is convenient for installation on the tire.

[0073] In some embodiments, a waterproof breathable membrane 7 is provided at the ventilation port 14.

[0074] Specifically, as Figure 2 shown, a waterproof breathable membrane 7 can be provided at the ventilation port 14. It can permeate gas and block water from passing through. The waterproof breathable membrane 7 covers the ventilation port 14, which can prevent water from entering the inside of the detection cavity 13 and affecting the internal electronic components, and further improves the reliability of the flat tire detection sensor 100.

[0075] Among them, it should be noted that the size of the waterproof breathable membrane 7 should be set to completely cover the ventilation port 14, that is, it should be set larger than the size of the ventilation port 14 to ensure the reliability of waterproof and breathable.

[0076] In some embodiments, the flat tire detection sensor 100 further includes a breathable membrane bracket 6. The breathable membrane bracket 6 is connected to the sensor housing 1, and the waterproof breathable membrane 7 is clamped between the breathable membrane bracket 6 and the sensor housing 1.

[0077] Specifically, the breathable film bracket 6 is used to fixedly install the waterproof breathable film 7, so that the waterproof breathable film 7 is firmly and reliably installed to prevent it from falling off and affecting the waterproof and breathable effect. The waterproof breathable film 7 is arranged at the breathable opening 14, and it can allow gas to pass through while blocking water, thereby preventing water from entering the interior of the detection cavity 13 and affecting the internal electronic components, further improving the reliability of the tire burst detection sensor 100.

[0078] As Figure 1 shown, the waterproof breathable film 7 can be configured into other shapes such as semicircular and semi-rectangular, as long as it can cover the breathable opening 14. The breathable film bracket 6 is adapted to the shape of the waterproof breathable film 7. In practice, an adhesive can be provided on the waterproof breathable film 7 to stick it to the breathable film bracket 6 to prevent the waterproof breathable film 7 from falling off. The breathable opening 14 can be configured as a square hole, or of course, other shaped holes such as circular holes and oval holes, as long as the gas can pass through smoothly.

[0079] As Figure 1 and Figure 2 shown, the breathable film bracket 6 is fixedly connected to the sensor housing 1 and installed in the detection cavity 13. For example, it can be connected by bolt connection, welding connection, etc. to ensure the connection reliability. The waterproof breathable film 7 is clamped between the breathable film bracket 6 and the sensor housing 1 and placed at the breathable opening 14. Thus, the waterproof and breathable functions of the overall structure of the tire burst detection sensor 100 are achieved.

[0080] In some embodiments, the sensor housing 1 includes a main housing 15 and a mounting cover 12. A detection cavity 13 is formed inside the main housing 15. The mounting cover 12 is connected to the main housing 15 and closes the open end of the detection cavity 13. The breathable opening 14 is provided on the mounting cover 12, and a rubber sleeve 11 is provided outside the main housing 15.

[0081] Specifically, as Figure 1 and Figure 2 shown, the sensor housing 1 includes a main housing 15 and a mounting cover 12. The interior of the main housing 15 is hollow to form a detection cavity 13. The upper part of the main housing 15 is open, that is, the upper part of the detection cavity 13 is open. The mounting cover 12 can be connected to the upper end of the main housing 15 by laser welding to close the open end of the detection cavity 13, ensuring the sealing of the entire structure of the tire burst detection sensor 100. The breathable opening 14 is provided on the mounting cover 12 and penetrates along the thickness direction of the mounting cover 12 to ensure the smooth entry and exit of gas.

[0082] In practice, after the overall assembly of the sensor is completed, the tire burst housing 2, the electronic control board 31, etc. can be installed in the main housing 15. After the mounting cover 12 is welded to the main housing 15 and closed, it can be limited and placed inside the rubber sleeve 11, that is, the main housing is wrapped in the rubber sleeve 11, which is convenient for installation and not easy to fall off. As Figure 2As shown, the rubber sleeve 11 is provided with an attachment surface 111, and the attachment surface 111 of the rubber sleeve 11 can be adhered to the inner wall of the tire to realize the installation of the tire blowout detection sensor 100 inside the tire. In this way, it is convenient to install and disassemble the tire blowout detection sensor 100. When the tire blowout detection sensor 100 or the tire is damaged and needs to be replaced, the tire blowout detection sensor 100 can be directly taken out, replaced with a new rubber sleeve 11, and then adhered to the new tire; therefore, damage caused by various tire reasons will only consume one rubber sleeve 11, and the tire blowout detection sensor 100 does not need to be replaced as a whole; on the other hand, by lowering the height and pasting and assembling, even if the tire blows, it will not cause scratches or squeezes to the tire blowout detection sensor 100. However, if an accident such as a tire blowout occurs in the existing tire pressure sensor, there is a high probability that the tire pressure sensor will be directly damaged, resulting in a waste of cost. And because the tire blowout detection sensor 100 in the utility model is attached to the inner wall of the tire, the data collected by the tire pressure sensor chip 312 is more accurate and true, which is conducive to more accurate control of the vehicle.

[0083] In some embodiments, the capillary tube 24 also includes a main tube section 243, a first tube section 244 and a second tube section 245. The main tube section 243 is extended in a spiral winding manner, and the first tube section 244 and the second tube section 245 are connected to both ends of the main tube section 243. A first air hole 241 is formed at the end of the first tube section 244, and a second air hole 242 is formed at the end of the second tube section 245.

[0084] That is to say, the capillary tube 24 can be made of a tube section by spiral winding, and the two ends of the tube section extend toward both sides respectively, which is convenient to manufacture and has a compact structure.

[0085] Specifically, Figure 5 As shown, the capillary tube 24 includes a main tube section 243, a first tube section 244 and a second tube section 245, the first tube section 244 and the second tube section 245 are connected to both ends of the main tube section 243, the main tube section 243 is spirally coiled and extended, the main tube section 243 is mainly installed in the wall surface of the tire blowout housing 2, and the overall height of the tire blowout detection sensor 100 can be reduced, the end of the first tube section 244 is the first air hole 241, the end of the second tube section 245 is the second air hole 242, the main tube section 243, the first tube section 244 and the second tube section 245 are connected, so that the gas can flow from the first air hole 241 to the second air hole 242, or from the second air hole 242 to the first air hole 241, so as to achieve smooth flow of gas.

[0086] like Figure 1As shown, the first air hole 241 extends into the second chamber 22, and the second air hole 242 extends into the detection chamber 13. The apertures of the first air hole 241 and the second air hole 242 are relatively small, so that the gas in the second chamber 22 can slowly flow into the detection chamber 13 through the first air hole 241 and the second air hole 242, ensuring the smooth flow of gas between the second chamber 22 and the detection chamber 13. In practice, when a flat tire does not occur, the second chamber 22 and the detection chamber 13 can slowly intake air through the first air hole 241 and the second air hole 242 with small apertures to maintain the air pressure balance between the two. When a flat tire suddenly occurs, the gas in the detection chamber 13 leaks out to balance the air pressure in the tire, while the gas in the second chamber 22 cannot be quickly discharged, thus generating a pressure difference between the detection chamber 13 and the first chamber 21.

[0087] The present utility model also provides a vehicle.

[0088] The vehicle according to the embodiment of the present utility model is provided with the flat tire detection sensor 100 of any one of the above embodiments.

[0089] Wherein, by arranging the flat tire housing 2 inside the tire, the first chamber 21 and the second chamber 22 are respectively communicated with the outside of the flat tire housing 2. When a flat tire occurs, a pressure difference is generated between the first chamber 21 and the second chamber 22. When the pressure in the second chamber 22 is greater than the pressure in the first chamber 21, the sealing diaphragm 23 deforms, causing the electric control structure to immediately send out a flat tire signal. The flat tire trigger is timely and efficient, without false triggering, greatly improving the safety performance of the vehicle. By integrally injection molding the capillary 24 into the wall surface of the flat tire housing 2, the structural stability and sealing performance of the flat tire housing 2 are improved, the structure is simple, the cost is reduced, the overall height of the flat tire detection sensor 100 is reduced, thereby avoiding interference with the rim of the tire wheel hub when installing the flat tire detection sensor 100, improving the reliability of the flat tire detection sensor 100, and further enabling better control of the vehicle and improving the driving safety of the vehicle.

[0090] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tire blowout detection sensor, characterized in that: include: A tire bursting shell, wherein a sealing diaphragm is provided in the tire bursting shell, wherein the sealing diaphragm divides the inner cavity of the tire bursting shell into a first cavity and a second cavity, wherein the first cavity is connected to the outside of the tire bursting shell through a communication port, and the second cavity is connected to the outside of the tire bursting shell through a capillary tube, wherein the flow cross-sectional area of ​​the capillary tube is smaller than the flow cross-sectional area of ​​the communication port, wherein the tire bursting shell is connected to an electric control structure, wherein the sealing diaphragm is adapted to deform when the pressure in the second cavity is greater than the pressure in the first cavity and cause the electric control structure to send out a tire bursting signal; Wherein, the capillary is integrally injection-molded in the wall surface of the tire-bursting shell.

2. The tire blowout detection sensor according to claim 1, characterized in that: The electric control structure includes an electric control board, a first conductive member, a second conductive member and an antenna. The first conductive member, the second conductive member and the antenna are electrically connected to the electric control board respectively. The sealing diaphragm is suitable for pushing the first conductive member and the second conductive member into contact with each other and making the electric control circuit of the electric control board conductive to control the antenna to send the tire burst signal.

3. The tire blowout detection sensor according to claim 2, characterized in that: The first cavity and the second cavity are spaced apart and distributed along a first direction; The first conductive member is attached to the sealing film, the second conductive member is spaced apart from the first conductive member, and the sealing film is suitable for pushing the first conductive member to deform along the first direction so as to be attached to and in contact with the second conductive member.

4. The tire blowout detection sensor according to claim 3, characterized in that: The antenna and the tire burst housing are sequentially distributed along a second direction, and the second direction is perpendicular to the first direction.

5. The tire blowout detection sensor according to claim 3, characterized in that: The electronic control board includes a main board body and a tire pressure sensor chip, the tire pressure sensor chip is arranged on one side of the main board body and protrudes and extends along the first direction, the tire blowout housing is connected to the main board body and is located on the same side of the main board body as the tire pressure sensor chip, and the antenna is installed at the end of the tire pressure sensor chip.

6. The tire blowout detection sensor according to claim 5, characterized in that: The second conductive member and the first conductive member are electrically connected to the main board body through current guiding pins respectively.

7. The tire blowout detection sensor according to claim 3, characterized in that: The second conductive element is parallel to and spaced apart from the first conductive element.

8. The tire blowout detection sensor according to claim 2, characterized in that: It also includes a power supply component, which is electrically connected to the electric control board; Wherein, the power supply component is located on one side of the electric control board, and the power supply component and the electric control board are distributed in sequence along a first direction.

9. The tire blowout detection sensor according to claim 1, characterized in that: It also includes a sensor housing, in which a detection cavity is formed and a vent connected to the detection cavity is provided, and the tire burst housing is installed in the detection cavity.

10. The tire blowout detection sensor according to claim 9, characterized in that: A waterproof and breathable membrane is provided at the vent opening.

11. The tire blowout detection sensor according to claim 10, characterized in that: It also includes a breathable membrane bracket, which is connected to the sensor housing, and the waterproof breathable membrane is sandwiched between the breathable membrane bracket and the sensor housing.

12. The tire blowout detection sensor according to claim 9, characterized in that: The sensor housing comprises a main housing and a mounting cover. A detection cavity is formed in the main housing. The mounting cover is connected to the main housing and closes the open end of the detection cavity. The air vent is arranged on the mounting cover. A rubber sleeve is arranged outside the main housing.

13. The tire blowout detection sensor according to claim 1, characterized in that: The capillary tube also includes a main tube section, a first tube section and a second tube section. The main tube section is extended in a spiral coil. The first tube section and the second tube section are connected to two ends of the main tube section. A first air hole communicating with the second cavity is formed at the end of the first tube section, and a second air hole communicating with the outside of the tire burst shell is formed at the end of the second tube section.

14. A vehicle, characterized in that: A tire blowout detection sensor according to any one of claims 1 to 13 is provided.

Images