A vehicle body height sensor structure

Abstract

The utility model belongs to the field of car body height sensor, concretely relates to a car body height sensor structure, including the plastic shell, the inside plug -in of the upper end opening of plastic shell is inserted with the plastic plug, the inside of plastic plug is provided with the copper insert, the bottom of plastic plug is provided with the hall chip, hall chip and copper insert electric connection, the inside of plastic shell is provided with the permanent magnet, the position of permanent magnet corresponds with the position of hall chip, the inside of plastic shell is rotatably connected with the rotating shaft. The utility model discloses through setting up the permanent magnet in the plastic shell, then sets up the hall chip in the plastic plug of plastic shell, and the corresponding of hall chip and permanent magnet, then sets up a rotating shaft in the plastic shell, in this way, adjusts the magnetic field intensity through the rotating angle of rotating shaft, and then transforms into linear voltage signal, compared with the old mechanical brush piece formula, and it responds quickly, and the precision is high.

Description

Technical Field

[0001] This utility model relates to the field of vehicle height sensor technology, specifically a vehicle height sensor structure. Background Technology

[0002] The vehicle height sensor (also known as the suspension height sensor or vehicle level sensor) is a key component of automotive electronic suspension systems (such as air suspension, active suspension, etc.). It detects changes in vehicle height, converts the information into electrical signals for the control unit to collect, and after reading the signals, the control unit knows the vehicle height status and adjusts the suspension damping and stiffness parameters.

[0003] A search revealed a sensor structure in utility model patent CN212963277U. This sensor structure, a vehicle height position sensor, includes a rocker arm assembly. One end of the rocker arm assembly is connected to a sensor assembly, and the other end is connected to a connecting arm assembly. The sensor assembly includes a housing, within which a PCB board is housed. A chip is mounted on the PCB board. A mounting portion is provided on the housing, and a main shaft assembly is mounted within the mounting portion. The main shaft assembly includes a main shaft that passes through a mounting hole in the mounting portion and connects to the rocker arm assembly. A sensing element is mounted on the main shaft. The chip has a primary coil and a secondary coil, and the sensing element moves within the coverage area of ​​the coils.

[0004] However, many traditional height sensors typically use mechanical brush sensors, which suffer from slow response and poor accuracy. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a vehicle height sensor structure that solves the problems of slow response and poor accuracy of mechanical brush-type height sensors.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle height sensor structure, including a plastic housing, a plastic plug inserted into the inner side of the upper opening of the plastic housing, a copper insert inside the plastic plug, a Hall chip at the bottom of the plastic plug, the Hall chip being electrically connected to the copper insert, a permanent magnet inside the plastic housing, the position of the permanent magnet corresponding to the position of the Hall chip, and a rotating shaft rotatably connected inside the plastic housing, the upper end of the rotating shaft contacting the permanent magnet.

[0007] Preferably, an oil seal is provided on the inner side of the lower end of the plastic shell. The outer ring wall of the oil seal is interference-fitted with the plastic shell, and the rotating shaft passes through the oil seal and is rotatably connected to the inner ring wall of the oil seal. The oil seal provides a sealing effect between the rotating shaft and the plastic shell.

[0008] Preferably, an end cap is fitted onto the lower section of the rotating shaft, and the end cap abuts against the oil seal. The end cap provides protection for the oil seal.

[0009] Preferably, the end cap has an integrally formed protrusion inside, which engages with the rotating shaft. The protrusion secures the rotating shaft to the end cap.

[0010] Preferably, the upper end of the end cap is integrally formed with a sleeve, which is rotatably connected to the lower end of the plastic shell. The sleeve provides a sealing and protective function between the end cap and the plastic shell.

[0011] Preferably, a fixing seat is fixedly connected to the middle of the outer side of the plastic shell. The fixing seat serves to fix the plastic shell in place.

[0012] Preferably, a resilient locking block is fixedly connected to the top of the plastic housing, and the resilient locking block engages with the plastic plug. The resilient locking block secures the plastic plug to the plastic housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention incorporates a permanent magnet inside a plastic casing, a Hall effect chip inside a plastic plug within the casing, and a rotating shaft inside the casing. The magnetic field strength is adjusted by rotating the shaft, which then converts the magnetic field into a linear voltage signal. Compared to older mechanical brush-type magnetic field sensors, this invention offers faster response and higher precision. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged view of point A.

[0017] In the diagram: 101, plastic shell; 102, plastic plug; 103, copper insert; 104, Hall effect chip; 105, permanent magnet; 106, rotating shaft; 107, end cap; 1071, sleeve; 1072, protrusion; 108, oil seal; 109, fixing base; 1010, elastic locking block. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-2 A vehicle height sensor structure includes a plastic housing 101, with a fixing seat 109 fixedly connected to the middle of the outer side of the plastic housing 101. The fixing seat 109 serves to fix the plastic housing 101 in place. A plastic plug 102 is inserted into the inner side of the upper opening of the plastic housing 101. An elastic locking block 1010 is fixedly connected to the top of the plastic housing 101, and the elastic locking block 1010 engages with the plastic plug 102. The elastic locking block 1010 serves to fix the insertion of the plastic plug 102 into the plastic housing 101. A copper insert 103 is disposed inside the plastic plug 102, and a Hall chip 104 is disposed at the bottom of the plastic plug 102. The Hall chip 104 is electrically connected to the copper insert 103. A permanent magnet 105 is disposed inside the plastic housing 101, and the position of the permanent magnet 105 corresponds to the position of the Hall chip 104. A rotating shaft 106 is rotatably connected inside the plastic housing 101, and the upper end of the rotating shaft 106 contacts the permanent magnet 105.

[0020] Please see Figures 1-2 An oil seal 108 is provided on the inner side of the lower end of the plastic housing 101. The outer ring wall of the oil seal 108 is press-fitted with the plastic housing 101. The rotating shaft 106 passes through the oil seal 108 and is rotatably connected to the inner ring wall of the oil seal 108. The oil seal 108 provides a sealing effect between the rotating shaft 106 and the plastic housing 101.

[0021] Please see Figures 1-2 An end cap 107 is fitted onto the lower section of the rotating shaft 106, and the end cap 107 abuts against the oil seal 108. The end cap 107 provides protection for the oil seal 108. A protrusion 1072 is integrally formed inside the end cap 107, and the protrusion 1072 engages with the rotating shaft 106. The protrusion 1072 provides fixation for the rotating shaft 106 on the end cap 107. A sleeve 1071 is integrally formed at the upper end of the end cap 107, and the sleeve 1071 is rotatably connected to the lower exterior of the plastic housing 101. The sleeve 1071 provides a sealing and protective function between the end cap 107 and the plastic housing 101.

[0022] The specific implementation process of this utility model is as follows: In use, the plastic shell 101 of the sensor is first installed on the vehicle body through the fixing seat 109, while the rotating shaft 106 is connected to the electric drive assembly. When the vehicle height needs to be adjusted, the rotating shaft 106 rotates at a certain angle, and when it rotates, it changes the magnetic field strength of the permanent magnet 105, which is converted into a linear voltage signal and transmitted to the Hall chip 104. Then, the copper plug-in 103 provides an electrical signal for the control terminal to collect. After the control reads the signal, the vehicle height is known, and the suspension damping and stiffness parameters can be adjusted to adapt to different driving conditions.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle body height sensor structure comprising a plastic housing (101), characterized by: A plastic plug (102) is inserted into the inner side of the upper opening of the plastic shell (101). A copper insert (103) is provided inside the plastic plug (102). A Hall chip (104) is provided at the bottom of the plastic plug (102). The Hall chip (104) is electrically connected to the copper insert (103). A permanent magnet (105) is provided inside the plastic shell (101). The position of the permanent magnet (105) corresponds to the position of the Hall chip (104). A rotating shaft (106) is rotatably connected inside the plastic shell (101). The upper end of the rotating shaft (106) is in contact with the permanent magnet (105).

2. The vehicle body height sensor structure according to claim 1, characterized by: An oil seal (108) is provided on the inner side of the lower end of the plastic shell (101). The outer ring wall of the oil seal (108) is press-fitted with the plastic shell (101). The rotating shaft (106) passes through the oil seal (108) and is rotatably connected to the inner ring wall of the oil seal (108).

3. The vehicle height sensor structure according to claim 1, characterized in that: The lower section of the rotating shaft (106) is fitted with an end cap (107), which abuts against the oil seal (108).

4. The vehicle height sensor structure according to claim 3, characterized in that: The end cap (107) has an integrally formed protrusion (1072) inside, which is engaged with the rotating shaft (106).

5. The vehicle height sensor structure according to claim 3, characterized in that: The upper end of the end cap (107) is integrally formed with a sleeve (1071), which is rotatably connected to the lower end of the plastic shell (101).

6. The vehicle height sensor structure according to claim 1, characterized in that: A fixing seat (109) is fixedly connected to the middle of the outer side of the plastic shell (101).

7. The vehicle height sensor structure according to claim 1, characterized in that: The top of the plastic shell (101) is fixedly connected to an elastic clip (1010), which engages with the plastic plug (102).

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