Anti-lock brake system (ABS) sensor adaptive to extreme environment

Abstract

The utility model discloses an extreme environment adaptive ABS sensor, which relates to the technical field of ABS sensors and comprises a base, a high-temperature-resistant shell is detachably mounted at the top end of the base, a heat insulation shell is arranged on the outer surface of the high-temperature-resistant shell, and a low-temperature-resistant shell is detachably mounted at the top end of the base on the outer surface of the heat insulation shell. Four damping rods are arranged in the high-temperature-resistant shell, springs are arranged on the outer surfaces of the four damping rods, screw rods are arranged at the bottom ends of the four damping rods, and the outer surfaces of the four screw rods are jointly connected with a sensing element connecting piece. By arranging a three-layer composite structure, through material complementation and functional layering, softening at high temperature is avoided, embrittlement at low temperature is avoided, the weight of a heat insulation material is low, and signal distortion, brake system misjudgment and even failure caused by frosting or freezing of the front end of the low-temperature-resistant shell in an extremely cold environment are avoided; the magnet fixing support cannot deform due to vibration, and magnetic field coupling efficiency is prevented from being affected by magnet displacement.

Description

Technical Field

[0001] This utility model relates to the field of ABS sensor technology, specifically an extreme environment-adaptive ABS sensor. Background Technology

[0002] Anti-lock braking system (ABS) is one of the core components of modern automotive safety. Its core sensor (wheel speed sensor) monitors the wheel speed in real time and provides data to the ECU to adjust the braking force and prevent the wheels from locking up.

[0003] However, the existing ABS sensor housing and installation structure are relatively simple. In extreme environments (such as extreme cold / heat, sand and dust, bumpy roads), traditional ABS sensors are prone to performance degradation or even failure, leading to braking safety risks. Moreover, there is a risk of frost and ice forming at the front end of the sensor. Ice formation may cause the sensor to distort signals and misjudge the braking system. Utility Model Content

[0004] The purpose of this invention is to provide an extreme environment-adaptive ABS sensor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an extreme environment-adaptive ABS sensor, comprising a base, a high-temperature resistant shell detachably mounted on the top of the base, a heat insulation shell disposed on the outer surface of the high-temperature resistant shell, a low-temperature resistant shell detachably mounted on the top of the base on the outer surface of the heat insulation shell, four damping rods disposed inside the high-temperature resistant shell, springs disposed on the outer surface of each of the four damping rods, screws disposed at the bottom of each of the four damping rods, a sensing element connector connected to the outer surface of the four screws, a sensing end disposed at the top of the sensing element connector, and a heating element disposed inside the heat insulation shell.

[0006] Preferably, the bottom end of the low-temperature resistant shell and the top end of the base are both provided with shell mounting holes, and the bottom end of the high-temperature resistant shell and the top end of the base are both provided with inner shell mounting holes. The low-temperature resistant shell and the high-temperature resistant shell are installed on the top of the base, and the low-temperature resistant shell protects the outside of the high-temperature resistant shell, thus protecting the internal sensing end.

[0007] Preferably, the top of the heat insulation shell above the heating element is provided with several holes. When the heating element is powered on and generates heat, the heat is conducted upward. In low-temperature environments, the front end of the low-temperature shell may frost or ice. The heat generated by the heating element raises the temperature of the front end of the low-temperature shell, causing the frost or ice to melt, thus avoiding signal distortion, misjudgment of the braking system, or even failure.

[0008] Preferably, the top end of the sensing element connector is provided with four through holes arranged in a ring. The through holes match the screw. During assembly, the bottom of the screw passes through the through holes, and then a nut is installed at the extension end of the screw for fixation, so that the sensing element connector is fixed inside the high-temperature resistant shell.

[0009] Preferably, the top of the high-temperature resistant shell has a through-hole, which coincides with the insertion hole of the heating element. The transmission line can be connected to the heating element through the through-hole, and the transmission line can be connected to the vehicle control assembly. In low-temperature environments, power is transmitted through the transmission line to generate heat in the heating element.

[0010] Preferably, a wire hole is provided at the middle position of the top of the base, and a mounting bracket is provided on one side of the base. A transmission line can be inserted into the wire hole so that the top of the transmission line can be connected to the sensing end and the heating element respectively, which facilitates data and power transmission.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This extreme environment-adaptive ABS sensor uses a combination of a low-temperature resistant shell, a heat-insulating shell, and a high-temperature resistant shell. The low-temperature resistant shell is located on the outermost layer, and the sensing end is installed inside the high-temperature resistant shell. A heat-insulating shell is set between the low-temperature resistant shell and the high-temperature resistant shell. The three-layer composite structure, through material complementarity and functional layering, ensures that it will not soften at high temperatures and will not become brittle at low temperatures. The heat-insulating material is lightweight. At the same time, the top of the heat-insulating shell is equipped with a heating element, which releases heat to the front end of the low-temperature resistant shell in low-temperature environments, preventing frost or ice formation on the front end of the low-temperature resistant shell in extremely cold environments, which could lead to signal distortion, misjudgment of the braking system, or even failure.

[0013] 2. This extreme environment-adaptive ABS sensor uses four damping rods and springs inside its high-temperature resistant housing, unlike most existing sensors that rely on rubber for shock absorption. By employing mechanical damping, it avoids the impact of the external environment on the lifespan and quality of rubber-damped products. The sensor end is fixedly installed inside the high-temperature resistant housing, reducing the vibration amplitude of the sensor end and preventing fatigue of the circuit board solder joints inside the sensor end, which could lead to wire breakage. This also prevents the magnet mounting bracket from deforming due to vibration, avoiding magnet displacement and ensuring magnetic field coupling efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the overall structure of this utility model broken down.

[0016] Figure 3 This is a schematic cross-sectional view of the high-temperature resistant shell structure of this utility model.

[0017] Figure 4This is a partial cross-sectional schematic diagram of the heat insulation shell structure of this utility model.

[0018] In the diagram: 1. Base; 101. Outer shell mounting hole; 102. Inner shell mounting hole; 103. Wire hole; 2. Mounting bracket; 3. Low temperature resistant shell; 4. Through hole; 5. Sensing element connector; 6. Sensing end; 7. High temperature resistant shell; 701. Connection hole; 8. Heat insulation shell; 9. Hole; 10. Screw; 11. Damping rod; 12. Spring; 13. Heating element. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4As shown, this embodiment of the extreme environment-adaptive ABS sensor includes a base 1. A high-temperature resistant shell 7 is detachably mounted on the top of the base 1. A heat-insulating shell 8 is provided on the outer surface of the high-temperature resistant shell 7. The heat-insulating shell 8 is made of aerogel, which has a low thermal conductivity and can effectively block the transfer of high temperature from the inner layer to the low temperature of the outer layer, or the penetration of low temperature from the outer layer to the inner layer. A low-temperature resistant shell 3 is detachably mounted on the top of the base 1 on the outer surface of the heat-insulating shell 8. The low-temperature resistant shell 3 is made of glass fiber reinforced nylon, which ensures the tensile and bending resistance of the shell in low-temperature environments. The high-temperature resistant shell 7 is made of polyetheretherketone (PEEK) material, which resists the impact of sand and mud or mechanical stress during installation, preventing brittleness of the low-temperature resistant shell 3. It maintains strength and dimensional stability at high temperatures, preventing sensor circuitry from aging due to high temperatures or magnet demagnetization. The three-layer composite structure, through material complementarity and functional layering, ensures that it does not soften at high temperatures and does not crack at low temperatures. The insulation material is lightweight. The high-temperature resistant shell 7 has four damping rods 11 inside, and each of the four damping rods 11 has a spring 12 on its outer surface. Each damping rod 11 has a screw 10 at its bottom end. The outer surfaces of the four screws 10 are connected to a sensing element connector 5. A sensing end 6 is located at the top of the sensing element connector 5, with the sensing end 6 facing upwards during installation. The four screws 10 pass through the sensing element connector 5, and nuts are installed at the extended ends of the screws 10 to fix the sensing element connector 5 inside the high-temperature resistant housing 7. When the vehicle is running, the vehicle chassis will vibrate. When the vibration is transmitted to the inside of the high-temperature resistant housing 7, the damping rod 11 and spring 12 work together, similar to existing... The damping shock absorber, though smaller in actual size, can reduce vibration amplitude and prevent wire breakage due to fatigue of the circuit board solder joints inside the sensing end 6. It also prevents the magnet fixing bracket from deforming due to vibration, avoids magnet displacement, and avoids affecting magnetic field coupling efficiency. The heat insulation shell 8 is equipped with a heating element 13, which is a flexible thin film heating sheet. When the heating element 13 is powered on, it releases heat to the front end of the low-temperature shell 3, preventing frost or ice formation at the front end of the low-temperature shell 3 in extremely cold environments, which could lead to signal distortion, misjudgment of the braking system, or even failure.

[0022] Specifically, the bottom of the low-temperature resistant shell 3 and the top of the base 1 are both provided with shell mounting holes 101, and the bottom of the high-temperature resistant shell 7 and the top of the base 1 are both provided with inner shell mounting holes 102. The low-temperature resistant shell 3 and the high-temperature resistant shell 7 are installed on the top of the base 1. The low-temperature resistant shell 3 protects the outside of the high-temperature resistant shell 7 and protects the internal sensing end 6.

[0023] Furthermore, the top of the heat insulation shell 8 above the heating element 13 is provided with several holes 9. When the heating element 13 is powered on and generates heat, the heat is conducted upward. In low-temperature environments, the front end of the low-temperature shell 3 may frost or ice. The heat generated by the heating element 13 raises the temperature of the front end of the low-temperature shell, causing the frost or ice to melt, thus avoiding signal distortion, misjudgment of the braking system, or even failure.

[0024] Furthermore, the top of the sensing element connector 5 is provided with four through holes 4 arranged in a ring. The through holes 4 match the screw 10. During assembly, the bottom of the screw 10 passes through the through holes 4, and then a nut is installed at the extension end of the screw 10 for fixation, so that the sensing element connector 5 is fixed inside the high-temperature resistant shell 7.

[0025] Furthermore, a connection hole 701 is provided through the top of the high-temperature resistant shell 7. The connection hole 701 coincides with the insertion hole of the heating element 13. The transmission line can be connected to the heating element 13 through the connection hole 701. The transmission line is connected to the vehicle control assembly. In low-temperature environments, power is transmitted through the transmission line to make the heating element 13 generate heat.

[0026] Furthermore, a wire hole 103 is provided at the top center of the base 1, and a mounting bracket 2 is provided on one side of the base 1. A transmission line can be inserted into the wire hole 103, so that the top of the transmission line can be connected to the sensing end 6 and the heating element 13 respectively, which facilitates data and power transmission.

[0027] The usage method of this embodiment is as follows: When assembling the extreme environment adaptable ABS sensor, the sensing end 6 faces upward, and four screws 10 pass through the sensing element connector 5. Then, nuts are installed on the extension ends of the screws 10 to fix the sensing element connector 5 inside the high-temperature resistant shell 7. Then, the high-temperature resistant shell 7 is installed on the top of the base 1. Then, the heat insulation shell 8 is fitted onto the outer surface of the high-temperature resistant shell 7. Finally, the low-temperature resistant shell 3 is installed on the outer surface of the heat insulation shell 8. The heat insulation shell 8 has a low thermal conductivity, which can effectively block the transfer of high temperature from the inner layer to the low temperature of the outer layer, or the penetration of low temperature from the outer layer to the inner layer. The low-temperature resistant shell 3 ensures the tensile and bending resistance of the shell in the low-temperature environment, resists the impact of sand and mud or mechanical stress during installation, and avoids the low-temperature resistant shell 3 from cracking. The high-temperature resistant shell 7 is in high temperature... It maintains strength and dimensional stability even at low temperatures, preventing sensor circuits from aging due to high temperatures or magnet demagnetization. The three-layer composite structure and outer shell, through material complementarity and functional layering, ensure that it does not soften at high temperatures and does not become brittle at low temperatures. The heat insulation material is lightweight. At the same time, when the vibration of the vehicle chassis is transmitted to the interior of the high-temperature resistant shell 7, the damping rod 11 and spring 12 work together to reduce the vibration amplitude, preventing fatigue of the circuit board solder joints inside the sensing end 6 that could lead to wire breakage. This also prevents the magnet fixing bracket from deforming due to vibration, avoiding magnet displacement and affecting magnetic field coupling efficiency. In extremely cold environments, when the heating element 13 is powered on, it releases heat to the front end of the low-temperature resistant shell 3, preventing frost or ice formation at the front end of the low-temperature resistant shell 3 in extremely cold environments, which could lead to signal distortion, misjudgment of the braking system, or even failure.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An extreme environment-adaptive ABS sensor, comprising a base (1), characterized in that: A high-temperature resistant shell (7) is detachably installed on the top of the base (1). A heat insulation shell (8) is provided on the outer surface of the high-temperature resistant shell (7). A low-temperature resistant shell (3) is detachably installed on the top of the base (1) on the outer surface of the heat insulation shell (8). Four damping rods (11) are provided inside the high-temperature resistant shell (7). A spring (12) is provided on the outer surface of each of the four damping rods (11). A screw (10) is provided at the bottom end of each of the four damping rods (11). A sensing element connector (5) is connected to the outer surface of each of the four screws (10). A sensing end (6) is provided at the top of the sensing element connector (5). A heating element (13) is provided inside the heat insulation shell (8).

2. The extreme environment-adaptive ABS sensor according to claim 1, characterized in that: The bottom of the low-temperature resistant shell (3) and the top of the base (1) are respectively provided with shell mounting holes (101), and the bottom of the high-temperature resistant shell (7) and the top of the base (1) are respectively provided with inner shell mounting holes (102).

3. The extreme environment-adaptive ABS sensor according to claim 1, characterized in that: The top of the heat insulation shell (8) above the heating element (13) is provided with several holes (9).

4. The extreme environment-adaptive ABS sensor according to claim 1, characterized in that: The top end of the sensing element connector (5) is provided with four through holes (4).

5. The extreme environment-adaptive ABS sensor according to claim 1, characterized in that: The top of the high-temperature resistant shell (7) has a through-hole (701).

6. The extreme environment-adaptive ABS sensor according to claim 1, characterized in that: A wire hole (103) is provided at the middle position of the top of the base (1), and a mounting bracket (2) is provided on one side of the base (1).

Images