Vehicle body height sensor

Abstract

The invention relates to a vehicle body height sensor, and relates to the technical field of sensors, the vehicle body height sensor comprises a housing, the housing is provided with a sensor assembly used for sensing the vehicle body height and a suspension assembly used for connecting a vehicle body, the housing is provided with a plurality of fixing pipes, the fixing pipes are internally provided with metal pipes, and the outer walls of the metal pipes are provided with clamping tooth rings; a fixing shell embedded in the shell is integrally formed outside the clamping gear ring in an injection molding mode, the end, away from the hanging assembly, of the fixing shell penetrates through the shell, a plurality of fixing holes are formed in the side wall of the fixing shell, the shell stretches into the fixing holes and abuts against the metal pipe, and the surface of the fixing shell abuts against the inner wall of the fixing pipe. The vehicle body height sensor effectively improves the accuracy of the shell when being connected with a vehicle body, can effectively reduce the surface wear of the shell, and prolongs the service life of the vehicle body height sensor.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a vehicle height sensor. Background Art

[0002] The vehicle height sensor is an important part of the car. It has a sensor shaft that is driven by a connecting rod and a disc with many narrow slots fixed on the shaft. The vehicle height sensor uses the Hall effect. When the height of the vehicle changes, the physical quantities such as the magnetic field or current inside the sensor will change, thereby generating corresponding electrical signal changes to reflect the change in vehicle height.

[0003] When the housing of the vehicle height sensor is injection molded, a metal tube with threaded holes is usually opened in the mold. The metal tube and the housing of the vehicle height sensor are injection molded as one piece, and the vehicle height sensor is installed near the vehicle body suspension system by extending fastening bolts into the metal tube.

[0004] In the related technology, the injection liquid is adsorbed on the outside of the metal tube during injection molding, causing the metal tube to be unbalanced in the mold. After the injection molding is completed, the threaded hole of the metal tube is offset, causing the position of the fastening bolts to be offset after installation, causing the outer shell of the vehicle height sensor to be worn during installation, which can easily affect the service life of the vehicle height sensor. Summary of the invention

[0005] In order to increase the service life of a vehicle height sensor, the present application provides a vehicle height sensor.

[0006] The vehicle height sensor provided in this application adopts the following technical solution: A vehicle height sensor comprises a shell, wherein the shell is provided with a sensor component for sensing the height of the vehicle body and a suspension component for connecting the vehicle body, a plurality of fixing tubes are provided on the shell, a metal tube is provided inside the fixing tube, a clamping gear ring is provided on the outer wall of the metal tube, a fixing shell embedded in the shell is integrally injection-molded outside the clamping gear ring, and one end of the fixing shell away from the suspension component vertically penetrates the shell, a plurality of fixing holes are provided on the side wall of the fixing shell, the shell extends into the fixing hole and abuts against the metal tube, and the surface of the fixing shell abuts against the inner wall of the fixing tube.

[0007] By adopting the above technical solution, when the fixed shell is injection molded outside the metal tube, the engaging tooth ring fits with the fixed shell, so that the fixed shell forms an annular first rack meshing with the engaging tooth ring inside, which can effectively prevent the metal tube from rotating in the fixed shell. The metal tube is embedded in the fixed shell, and when the outer shell is injection molded, the bottom of the fixed shell collides with the outer shell injection mold, so that the bottom of the fixed shell penetrates and is embedded in the outer shell after injection molding.

[0008] In addition, during injection molding, the support surface of the fixed shell can be effectively increased, and the stability of the fixed shell during the injection molding process can be improved, so as to avoid position displacement of the metal tube after the injection molding of the shell, and the accuracy of the shell when connected to the body can be effectively improved. The wear on the shell surface can be effectively reduced, and the service life of the body height sensor can be increased.

[0009] Optionally, a first mounting tube is provided on the outer shell, a second mounting tube is provided inside the first mounting tube, a rotating shaft is provided inside the second mounting tube, an end of the rotating shaft away from the outer shell is rotatably connected to the suspension assembly, a fixing ring provided on the second mounting tube is sleeved on the surface of the rotating shaft, an inner wall of the fixing ring is in conflict with an outer wall of the rotating shaft, and an outer wall of the fixing ring is in conflict with an inner wall of the first mounting tube.

[0010] By adopting the above technical solution, the rotating shaft is located in the second mounting tube, and the second mounting tube is inserted into the first mounting tube, which can reduce the damage of the rotating shaft caused by collision. In addition, the side of the rotating shaft is fixed by a fixing ring, which can effectively reduce the deviation of the measurement result caused by the shaking of the rotating shaft.

[0011] Optionally, a deformation groove is provided on the fixing ring, and an elastic clamping ring is sleeved on the inner wall of the deformation groove close to the rotating shaft.

[0012] By adopting the above technical solution, the deformation groove can provide deformation space for the fixing ring, which can effectively prevent the fixing ring from falling off. In addition, the elastic clamping ring arranged in the deformation groove can effectively improve the fastening of the inner wall of the fixing ring.

[0013] Optionally, the suspension assembly includes a swing arm rotatably connected to the rotating shaft, a first waterproof ring is provided on the swing arm, an annular inclined surface is provided on the inner wall of the first waterproof ring, a second waterproof ring is provided inside the first waterproof ring, the first waterproof ring and the second waterproof ring form a waterproof groove, and the first mounting tube extends into the waterproof groove.

[0014] By adopting the above technical solution, the first mounting tube extending into the waterproof groove can effectively prevent water from entering the rotating shaft. At the same time, the first mounting tube can rotate in the waterproof groove to meet the rotation requirements of the sensor and improve measurement accuracy.

[0015] Optionally, a waterproof plate is provided on a side of the housing facing away from the suspension assembly, the waterproof plate cooperates with the housing to form a waterproof cavity, and the sensor assembly is arranged in the waterproof cavity.

[0016] By adopting the above technical solution, the sensor component can be effectively prevented from being wetted by the outside world, thereby increasing the service life of the sensor component.

[0017] Optionally, a plurality of connecting plates are provided on the outer wall of the fixed tube, an anti-vibration component for reducing the stress of the outer shell is provided between two connecting plates, the anti-vibration component includes a plurality of vibration-damping blocks provided between two adjacent connecting plates, and a first vibration-damping spring fixedly connected to the connecting plates is provided at both ends of the vibration-damping blocks.

[0018] By adopting the above technical solution, when the shell is vibrated, the vibration-damping block shakes under the action of the first vibration-damping spring, so that the stress on the shell is converted and consumed, thereby reducing the vibration on the shell and increasing the service life of the shell.

[0019] Optionally, a plurality of vibration damping plates are arranged between two adjacent vibration damping blocks, a connecting spring is arranged between two adjacent vibration damping plates, wherein the vibration damping plate close to the vibration damping block is provided with a second vibration damping spring, and the second vibration damping spring is fixedly connected to the vibration damping block at the corresponding position.

[0020] By adopting the above technical solution, the vibration damping sheet and the vibration damping block are connected through the second vibration damping spring, so as to share the stress of the vibration damping block, which can accelerate the stress consumption of the shell. At the same time, it can effectively increase the stress consumption range of the vibration damping component, thereby improving the service life of the shell.

[0021] Optionally, a limit assembly for limiting the maximum rotation range of the housing is provided on the vibration damping plate, and the limit assembly includes a plurality of limit rods provided on the vibration damping plate, and the limit rods penetrate the housing and are connected to the suspension assembly.

[0022] By adopting the above technical solution, when the vehicle height sensor is in use and the rotation angle between the outer shell and the suspension assembly exceeds the maximum rotation range, the limit rod pushes the vibration damping plate to cause the second vibration damping spring to deform and compress, thereby pushing the limit rod back, so that the rotation angle between the outer shell and the suspension assembly is maintained within the range, thereby increasing the service life of the vehicle height sensor.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the housing is installed, the present application improves the installation accuracy of the fastening bolts by fixing the housing, reduces the wear of the housing during installation, and thereby increases the service life of the vehicle height sensor; 2. This application can reduce the stress on the housing during use through the anti-vibration component, effectively increasing the service life of the vehicle height sensor; 3. The present application can limit the maximum rotation angle between the housing and the suspension assembly through a limit assembly, so that the rotation angle of the suspension assembly relative to the housing is within a normal range, thereby increasing the service life of the vehicle height sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 It is a schematic diagram of the structure of the present application, mainly showing the housing and the first mounting tube; Figure 3 It is a schematic cross-sectional view of the present application; Figure 4 It is a schematic diagram of the structure of the metal tube of the present application; Figure 5 yes Figure 2 The enlarged structural diagram at A in the middle; Figure 6 It is a structural schematic diagram of the present application, mainly showing a first mounting tube and a second mounting tube; Figure 7 It is a structural schematic diagram of the rotating shaft of the present application; Figure 8 yes Figure 3 Enlarged structural diagram at B in the middle.

[0025] Description of the drawings: 1. Shell; 101. Mounting plate; 102. Partition plate; 103. Fixed tube; 104. Arc plate; 105. First mounting tube; 106. Reinforcement rib; 107. Connecting plate; 108. Second mounting tube; 109. Connecting plate; 110. Supporting plate; 111. Positioning column; 112. Waterproof plate; 2. Sensor assembly; 201. Positioning block; 202. Circuit board; 203. Hall element; 204. Magnetic ring; 205. Plug connector; 3. Suspension assembly; 301. Swing arm; 302. First connecting shaft; 303. Connecting rod; 304. Second connecting shaft; 305. Positioning plate; 306. Fixing bolt; 4. Anti-vibration assembly; 401. Vibration damping block; 402. First vibration damping spring; 403. Damping spring Vibrating piece; 404, connecting spring; 405, second damping spring; 5, limiting assembly; 501, limiting rod; 502, adjusting rod; 503, limiting sleeve; 6, first mounting groove; 7, second mounting groove; 8, fixing shell; 801, abutment block; 802, fixing hole; 9, metal pipe; 10, bracket; 11, snap-fit ​​gear ring; 12, rotating shaft; 1201, connector; 1202, first gear block; 1203, connecting block; 1204, second gear block; 13, sleeve tube; 14, fixing ring; 15, elastic snap ring; 16, first waterproof ring; 17, second waterproof ring; 18, waterproof groove; 19, snap-fit ​​hole; 20, rotating groove; 21, limiting hole; 22, limiting groove; 23, magnet groove; 24, third waterproof ring. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0027] A vehicle height sensor, referring to Figure 1 , Figure 2 , including an integrally injection-molded shell 1, in which a sensor component 2 for sensing the height of the vehicle body, a suspension component 3 for connecting the vehicle body, an anti-vibration component 4 for reducing the stress of the shell 1, and a limit component 5 for limiting the maximum rotation range of the shell 1 are arranged.

[0028] Reference Figure 2 , Figure 3 The housing 1 includes an integrally formed mounting plate 101 , a side wall of the mounting plate 101 is fixedly connected with an annular partition 102 , and the partition 102 cooperates with the mounting plate 101 to form a first mounting groove 6 and a second mounting groove 7 .

[0029] Reference Figure 1 , Figure 3 , Figure 4 The bottom of the first installation groove 6 is fixedly connected with two symmetrically arranged fixing tubes 103, the inner wall of the fixing tube 103 is fixedly connected with an integrally formed fixing shell 8, a metal tube 9 is inserted in the fixing shell 8, and a fastening bolt for fixing the vehicle body is rotatably connected in the metal tube 9, and a bracket 10 is fixedly connected to the fastening bolt. In addition, a clamping tooth ring 11 is provided on the outer surface of the metal tube 9, so that a first annular rack that is fully meshed with the clamping tooth ring 11 is formed inside the fixing tube 103 during injection molding.

[0030] Reference Figure 3 , Figure 4 , an end of the fixed shell 8 close to the mounting plate 101 is fixedly connected with an abutment block 801, and the diameter of the abutment block 801 is smaller than the diameter of the fixed shell 8. The abutment block 801 vertically penetrates and is embedded in the mounting plate 101, and the end of the abutment block 801 away from the fixed shell 8 is flush with the bottom of the second mounting groove 7. The side wall of the fixed shell 8 is provided with two symmetrical fixing holes 802. When the fixed shell 8 with the metal tube 9 embedded therein is injection-molded to form the fixed tube 103, the injection liquid flows into the fixing holes 802 and is fixed by adsorption to the outer surface of the metal tube 9, and at the same time, is fixed by adsorption to the outer surface of the fixed shell 8, so that the fixed shell 8 is embedded in the fixed tube 103.

[0031] Reference Figure 2 The bottom of the first mounting groove 6 is fixedly connected with an arc plate 104, a first mounting tube 105 is fixedly connected inside the arc plate 104, and two fixed tubes 103 are symmetrically arranged on both sides of the first mounting tube 105, and reinforcing ribs 106 are fixedly connected between the fixed tube 103 and the first mounting tube 105, between the partition plate 102 and the first mounting tube 105, and between the arc plate 104 and the first mounting tube 105. Two groups of connecting parts are arranged on the side wall of each fixed tube 103, and each group of connecting parts consists of two connecting pieces 107 arranged along the length direction of the outer wall of the fixed tube 103, and the connecting piece 107 is fixedly connected to the side wall of the fixed tube 103.

[0032] Reference Figure 2 , Figure 5The anti-vibration component 4 includes a vibration-damping block 401 arranged between two connecting plates 107 arranged along the length direction of the fixed tube 103, and both ends of the vibration-damping block 401 are fixedly connected to one end of a first vibration-damping spring 402, and the other end of the first vibration-damping spring 402 is fixedly connected to the corresponding connecting plate 107.

[0033] A vibration damping group is provided between the two fixed tubes 103 and is symmetrically arranged along the outer wall 105 of the first mounting tube. Three arc-shaped vibration damping sheets 403 are provided in the vibration damping group, and two adjacent vibration damping sheets 403 are fixedly connected by a connecting spring 404 that penetrates the reinforcing rib 106. One end of a second vibration damping spring 405 is fixedly connected to one side of each vibration damping block 401 away from the fixed tube 103, and the other end of the second vibration damping spring 405 is fixedly connected to the adjacent vibration damping sheet 403.

[0034] Reference Figure 3 , Figure 6 The first mounting tube 105 is embedded and penetrates the mounting plate 101 and extends into the second mounting groove 7. One end of the first mounting tube 105 in the second mounting groove 7 is fixedly connected to a connecting plate 109. The side of the connecting plate 109 close to the bottom of the first mounting groove 6 is fixedly connected to the second mounting tube 108. A plurality of supporting sheets 110 are fixedly connected to the outer wall of the second mounting tube 108, and the plurality of supporting sheets 110 are fixedly connected to the inner wall of the first mounting tube 105.

[0035] Reference Figure 3 , Figure 6 , Figure 7 The second mounting tube 108 is provided with a rotating shaft 12 for rotationally connecting the suspension assembly 3. The side wall of the rotating shaft 12 is sleeved with a sleeve tube 13, and the side wall of the sleeve tube 13 is recessed inward to form a fixing groove. When the sleeve tube 13 is injection-molded and connected to the second mounting tube 108, a fastening ring for fitting the fixing groove is formed in the second mounting tube 108.

[0036] The side wall of the rotating shaft 12 is also sleeved with a fixing ring 14 for preventing the rotating shaft 12 from slipping, and the inner wall of the fixing ring 14 abuts against the outer wall of the rotating shaft 12, and the outer wall of the fixing ring 14 abuts against the inner wall of the first mounting tube 105. A deformation groove is provided on the side of the fixing ring 14 close to the mounting plate 101, and an elastic clamping ring 15 is sleeved on the inner wall of the deformation groove close to the rotating shaft 12.

[0037] One end of the rotating shaft 12 away from the mounting plate 101 is fixedly connected to a connector 1201, a plurality of first tooth blocks 1202 are fixedly connected to the side of the connector 1201, and an annular connector block 1203 is sleeved on the connector 1201, and a plurality of second tooth blocks 1204 are formed on the outer wall of the connector block 1203.

[0038] Reference Figure 3 , Figure 7The suspension component 3 includes an integrally injection-molded swing arm 301, and when the swing arm 301 is injected, a connecting block 1203 with a rotating shaft 12 inserted therein extends into the injection mold of the swing arm 301, and the injection liquid forms a second rack meshing with a plurality of first tooth blocks 1202 and a third rack meshing with a plurality of second tooth blocks 1204 on the inner wall of the connecting block 1203.

[0039] Reference Figure 1 One end of the swing arm 301 away from the connecting block 1203 is rotatably connected to the first connecting shaft 302, and one end of the connecting rod 303 is clamped on the first connecting shaft 302, and the other end of the connecting rod 303 is clamped on the second connecting shaft 304, and the second connecting shaft 304 is rotatably connected to the positioning plate 305, and the positioning plate 305 is penetrated by a fixing bolt 306, and the positioning plate 305 is fixed to the vehicle body by the fixing bolt 306.

[0040] Reference Figure 3 , Figure 8 The first waterproof ring 16 is fixedly connected to the side of the swing arm 301 close to the mounting plate 101. The inner wall of the first waterproof ring 16 is provided with an annular inclined surface. The cross section of the inclined surface extends obliquely from the side of the swing arm 301 close to the mounting plate 101 toward the outer wall close to the mounting plate 101 and the first waterproof ring 16. The second waterproof ring 17 is fixedly connected to the side of the swing arm 301 close to the mounting plate 101. The second waterproof ring 17 is coaxially arranged with the first waterproof ring 16, and the diameter of the second waterproof ring 17 is smaller than that of the first waterproof ring 16, so that a waterproof groove 18 is formed between the first waterproof ring 16 and the second waterproof ring 17.

[0041] One end of the first mounting tube 105 away from the mounting plate 101 extends into the waterproof groove 18 and abuts against the bottom of the waterproof groove 18, and an annular slope corresponding to the inclined surface is provided on the outer wall of the first mounting tube 105. In addition, a clamping hole 19 is provided at the bottom of the waterproof groove 18, a rotation groove 20 is provided on the inner wall of the first mounting tube 105, and an arc-shaped limiting hole 21 is provided on the side wall of the bottom of the rotation groove 20, and the opening of the limiting hole 21 is opened toward the outer wall of the first mounting tube 105.

[0042] Reference Figure 6 , Figure 8The limiting assembly 5 includes a limiting rod 501 extending into the clamping hole 19, the limiting rod 501 extending into the rotating groove 20, and the limiting rod 501 is rotatably connected to the adjusting rod 502, and the adjusting rod 502 is turned along the connection with the limiting rod 501, and the adjusting rod 502 extends into the limiting hole 21. The two vibration reduction groups are provided with elastic limiting sleeves 503 on one side close to the first mounting tube 105, and the limiting sleeves 503 are extended along the first mounting tube 105 in an annular manner from a group of vibration reduction groups connected to one of the fixed tubes 103, and are provided on another group of vibration reduction groups connected to the same fixed tube 103, so that the limiting sleeves 503 abut against the side wall of the other fixed tube 103. The limiting sleeves 503 are fixedly connected to the vibration damping plates 403 in the two vibration damping groups respectively, and a limiting groove 22 is defined on one side of the limiting sleeve 503 close to the first mounting tube 105 , and the adjusting rod 502 extends into the limiting groove 22 and slides along the limiting groove 22 .

[0043] Reference Figure 3 The sensor assembly 2 includes a positioning block 201 fixedly connected to the end of the rotating shaft 12 away from the swing arm 301, a magnet slot 23 is provided in the positioning block 201, and the opening of the magnet slot 23 is opened away from the swing arm 301 and communicated with the second mounting slot 7, and a magnetic ring 204 is fixedly connected in the magnet slot 23. A positioning column 111 is fixedly connected to the bottom of the second mounting slot 7, a circuit board 202 is fixedly connected to the positioning column 111, and a Hall element 203 corresponding to the position of the magnetic ring 204 is arranged on the circuit board 202.

[0044] A plug connector 205 for connecting to an external device is fixedly connected to the partition 102 . The plug connector 205 is provided with a plurality of plug terminals that penetrate the mounting plate 101 and the partition 102 and are connected to the circuit board 202 .

[0045] A waterproof plate 112 is fixedly connected to one side of the outer shell 1 away from the swing arm 301, and a third waterproof ring 24 is fixedly connected to one side of the waterproof plate 112 close to the mounting plate 101. The third waterproof ring 24 extends into the second mounting groove 7 and abuts against the inner wall of the second mounting groove 7, and one end of the partition plate 102 away from the swing arm 301 abuts against the waterproof plate 112.

[0046] The implementation principle of the embodiment of the present application is as follows: the engaging tooth ring 11 disposed on the outer surface of the metal tube 9 meshes with the first rack in the fixed shell 8, thereby fixing the metal tube 9 so that the metal tube 9 can no longer rotate in the fixed shell 8. In addition, when the metal tube 9 is inserted into the fixed shell 8 to inject the fixed tube 103, the abutment block 801 at the bottom of the fixed tube 103 abuts against the injection mold base, and the mold cover extends into the metal tube 9 and engages with the metal tube 9, so that the metal tube 9 embedded in the fixed shell 8 will not tilt under the flow of the injection liquid during injection molding. Moreover, the injection liquid is fixed to the surface of the metal tube 9 through the fixing hole 802 outside the fixed shell 8, which can effectively increase the fixing relationship between the outer shell 1 and the metal tube 9, and can effectively prevent the metal tube 9 from falling off.

[0047] When the housing 1 is vibrated, the damping block 401 moves back and forth between the two connecting pieces 107 arranged along the length direction of the fixed tube 103 under the action of the first damping spring 402, and the stress on the housing 1 is consumed by the deformation of the first damping spring 402. Moreover, when the damping block 401 vibrates, the damping piece 403 close to the damping block 401 is driven to vibrate through the second damping spring 405. In addition, the damping piece 403 that vibrates first drives the other damping piece 403 to vibrate through the deformation of the connecting spring 404, so that the two damping blocks 401 and the three damping pieces 403 between the two fixed tubes 103 form regular vibrations, which can further consume the stress on the housing 1.

[0048] When the vibration damping sheet 403 moves, the limiting sleeve 503 between two adjacent vibration damping sheets 403 is deformed, and the adjusting rod 502 slides along the limiting groove 22 on the limiting sleeve 503, so that the adjusting rod 502 can rotate clockwise or counterclockwise toward the other fixed tube 103 at the fixed tube 103 where the limiting sleeve 503 abuts, and the rotation angle is within plus or minus degrees. If the rotation angle of the adjusting rod 502 is greater than the specified range, the adjusting rod 502 will contact the side wall of the limiting groove 22, and at the same time, it will push the corresponding vibration damping sheet 403 to move, and the springs at both ends of the corresponding vibration damping sheet 403 will be deformed, providing opposite resistance to the adjusting rod 502 to prevent the excessive rotation of the adjusting rod 502.

[0049] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vehicle height sensor, comprising a housing (1), wherein the housing (1) is provided with a sensor component (2) for sensing the height of a vehicle body and a suspension component (3) for connecting to a vehicle body, wherein: A plurality of fixing tubes (103) are arranged on the outer shell (1), a metal tube (9) is arranged inside the fixing tube (103), a snap-fit ​​toothed ring (11) is arranged on the outer wall of the metal tube (9), a fixing shell (8) embedded in the outer shell (1) is integrally molded outside the snap-fit ​​toothed ring (11), and one end of the fixing shell (8) away from the suspension component (3) vertically penetrates the outer shell (1), a plurality of fixing holes (802) are opened on the side wall of the fixing shell (8), the outer shell (1) extends into the fixing hole (802) and abuts against the metal tube (9), and the surface of the fixing shell (8) abuts against the inner wall of the fixing tube (103).

2. A vehicle height sensor according to claim 1, characterized in that: A first mounting tube (105) is arranged on the outer shell (1), a second mounting tube (108) is arranged inside the first mounting tube (105), a rotating shaft (12) is arranged inside the second mounting tube (108), one end of the rotating shaft (12) away from the outer shell (1) is rotatably connected to the suspension component (3), a fixing ring (14) arranged on the second mounting tube (108) is sleeved on the surface of the rotating shaft (12), the inner wall of the fixing ring (14) is in contact with the outer wall of the rotating shaft (12), and the outer wall of the fixing ring (14) is in contact with the inner wall of the first mounting tube (105).

3. A vehicle height sensor according to claim 2, characterized in that: The fixing ring (14) is provided with a deformation groove, and an elastic clamping ring (15) is sleeved on the inner wall of the deformation groove on the side close to the rotating shaft (12).

4. A vehicle height sensor according to claim 2, characterized in that: The suspension assembly (3) comprises a swing arm (301) rotatably connected to the rotating shaft (12); a first waterproof ring (16) is arranged on the swing arm (301); an annular inclined surface is provided on the inner wall of the first waterproof ring (16); a second waterproof ring (17) is arranged inside the first waterproof ring (16); the first waterproof ring (16) and the second waterproof ring (17) form a waterproof groove (18); and the first mounting tube (105) extends into the waterproof groove (18).

5. The vehicle height sensor according to claim 1, characterized in that: A waterproof plate (112) is provided on the side of the housing (1) facing away from the suspension assembly (3); the waterproof plate (112) cooperates with the housing (1) to form a waterproof cavity; the sensor assembly (2) is arranged in the waterproof cavity.

6. The vehicle height sensor according to claim 1, characterized in that: The outer wall of the fixed tube (103) is provided with a plurality of connecting plates (107), an anti-vibration component (4) for reducing the stress of the housing (1) is provided between two connecting plates (107), the anti-vibration component (4) comprises a plurality of vibration-damping blocks (401) provided between two adjacent connecting plates (107), and first vibration-damping springs (402) fixedly connected to the connecting plates (107) are provided at both ends of the vibration-damping blocks (401).

7. A vehicle height sensor according to claim 6, characterized in that: A plurality of vibration-damping plates (403) are arranged between two adjacent vibration-damping blocks (401), and a connecting spring (404) is arranged between two adjacent vibration-damping plates (403), wherein the vibration-damping plate (403) close to the vibration-damping block (401) is provided with a second vibration-damping spring (405), and the second vibration-damping spring (405) is fixedly connected to the vibration-damping block (401) at a corresponding position.

8. The vehicle height sensor according to claim 7, characterized in that: A limit assembly (5) for limiting the maximum rotation range of the housing (1) is arranged on the vibration damping plate (403); the limit assembly (5) comprises a plurality of limit rods (501) arranged on the vibration damping plate (403); the limit rods (501) penetrate the housing (1) and are connected to the suspension assembly (3).

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