Vehicle chassis height sensor and vehicle

Abstract

The utility model discloses a vehicle chassis height sensor, include: sensor casing, including setting up in the connecting portion of sensor casing, and connecting portion is equipped with the connecting cavity, and connecting cavity extends along the first direction, swing arm, including setting up in the mounting portion of swing arm one end, and mounting portion assembles into the connecting cavity, and make swing arm rotatable sensor casing around the first direction, and mounting portion includes the slotted portion, and the slotted portion and the connecting cavity between storage have lubricating oil, and the slotted portion is equipped with a plurality of annular grooves along the first direction interval setting, and annular groove is concave to the cavity wall of connecting cavity inward, to form the lubricating oil anti -spill area with the cavity wall of connecting cavity, and lubricating oil anti -spill area is used for limiting lubricating oil and spilling out connecting cavity along the first direction, the utility model discloses can prevent grease and spill out connecting cavity through the annular groove setting, and simultaneously need not using the sealing ring, saves the cost, the utility model discloses still provides a kind of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a vehicle chassis height sensor and a vehicle. Background Technology

[0002] The chassis height sensor is a core component of modern vehicle electronic suspension systems, primarily used for real-time monitoring of the vehicle's chassis height. In chassis height sensors, the connection between the control arm and the sensor housing typically requires lubrication to reduce friction loss. Traditional chassis sensors often use one-way seals or simple dust covers for sealing. Using seals is not only costly, but over time, lubricating grease can easily seep upwards from between the control arm and the sensor housing, leaving the bottom of the control arm without grease. Reduced grease leads to dry friction between the relatively moving parts inside the sensor, increasing noise and potentially damaging the chassis height sensor. Utility Model Content

[0003] The purpose of this invention is to solve the problems of high cost and grease overflow in existing chassis position sensors. This invention provides a vehicle chassis height sensor and vehicle that can prevent grease overflow from the sensor without using a sealing ring.

[0004] To solve the above-mentioned technical problems, this utility model discloses a vehicle chassis height sensor, comprising:

[0005] A sensor housing includes a connecting portion disposed thereon, the connecting portion having a connecting cavity extending along a first direction;

[0006] The swing arm includes a mounting portion disposed at one end of the swing arm, the mounting portion being fitted into the connecting cavity, and the swing arm being rotatable relative to the sensor housing about the first direction;

[0007] The mounting portion includes a slotted portion, and lubricating oil is stored between the slotted portion and the connecting cavity. The slotted portion is provided with a plurality of annular grooves spaced apart along a first direction. The annular grooves are recessed inward relative to the cavity wall of the connecting cavity to form a lubricating oil spill prevention area with the cavity wall of the connecting cavity. The lubricating oil spill prevention area is used to limit the lubricating oil from overflowing into the connecting cavity along the first direction.

[0008] By adopting the above technical solution, the mounting part of the swing arm is assembled into the connecting cavity of the sensor housing. At the same time, an inwardly recessed annular groove is provided in the slotted part of the swing arm. The annular groove can form a lubricating oil spill prevention area with the cavity wall of the connecting cavity. The lubricating oil can be stored in the lubricating oil spill prevention area to prevent the lubricating oil from overflowing into the connecting cavity, thereby avoiding friction noise of the sensor caused by the reduction of lubricating oil. It also extends the service life of the vehicle chassis height sensor. At the same time, there is no need to use a sealing ring to seal the swing arm and the sensor housing, simplifying the assembly steps and saving costs.

[0009] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a vehicle chassis height sensor, wherein the slotted portion includes multiple frustums and multiple cylinders, the cylinders and frustums are alternately connected in sequence along the first direction to form the annular groove, and the cross-sectional area of ​​the frustums gradually decreases from the inside to the outside along the first direction.

[0010] Using the above technical solution, multiple annular grooves are formed by alternating frustums and cylinders. The cross-sectional area of ​​the frustums gradually decreases from the inside to the outside, allowing lubricating oil to be stored in the annular grooves. At the same time, the bottom surface of the cylinders can act as a physical baffle to prevent lubricating oil from overflowing.

[0011] According to another specific embodiment of this utility model, a vehicle chassis height sensor is disclosed, wherein the included angle α between the outer circumferential surface of the frustum and the lower surface of the cylinder ranges from 30° to 45°. By employing the above technical solution, the tilt angle of the outer circumferential surface of the frustum is limited to restrict the size of the annular groove, preventing poor overflow prevention due to an annular groove being too large or too small.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a vehicle chassis height sensor, wherein the shape and volume of each of the truncated cones are the same, and the shape and volume of each of the cylinders are the same.

[0013] By adopting the above technical solution, the shapes of each frustum and each cylinder are consistent, which not only simplifies the processing difficulty, but also makes the annular groove structure regular, and the lubricating oil is evenly distributed and has good stability in the annular groove.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a vehicle chassis height sensor, wherein the frustum is disposed between two adjacent cylinders, the outer peripheral surface of the frustum and the lower surface of one adjacent cylinder define the annular groove, and the lower surface of the frustum and the upper surface of the other adjacent cylinder are coplanar.

[0015] Using the above technical solution, an annular groove is defined by the lower surface of the cylinder and the outer circumference of the frustum. The lower surface of the frustum is coplanar with the upper surface of another cylinder. The cross-sectional area of ​​the annular groove gradually increases from the inside to the outside along the first direction. When lubricating oil overflows, the lubricating oil is sealed in the annular groove. The lower surface of the cylinder can act as a baffle to suppress the overflow of lubricating oil.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a vehicle chassis height sensor, wherein the upper surface area of ​​the frustum is smaller than the lower surface area of ​​the cylinder, and the lower surface area of ​​the frustum is equal to the upper surface area of ​​the cylinder.

[0017] Using the above technical solution, since the lower surface area of ​​the cylinder is larger than the upper surface area of ​​the frustum, the portion of the lower surface of the cylinder that extends beyond the upper surface of the frustum can act as a physical baffle, which can prevent the lubricating oil in the annular groove from overflowing.

[0018] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a vehicle chassis height sensor, wherein the swing arm further includes:

[0019] A sleeve extends along the first direction and is disposed opposite to the side wall of the mounting portion;

[0020] An extension protrudes from the side wall of the mounting portion and connects to the end of the sleeve. The side wall of the mounting portion, the extension, and the sleeve together define an mounting space.

[0021] A portion of the sidewall of the connecting part is fitted into the mounting space.

[0022] By adopting the above technical solution, an installation space for assembling the connecting part is defined by the side wall of the mounting part, the extension part and the sleeve, so that the horizontal movement of the connecting part is restricted by the installation space.

[0023] According to another specific embodiment of the present invention, a vehicle chassis height sensor is disclosed, which further includes a retaining ring. The outer surface of the side wall of the mounting part is provided with an annular groove. The annular groove and the connecting cavity communicate to form a retaining ring groove. The retaining ring is installed in the retaining ring groove and is used to limit the displacement of the mounting part relative to the connecting part in the first direction.

[0024] By adopting the above technical solution, the displacement of the mounting part relative to the connecting part in the first direction is limited by the retaining ring, so as to prevent the swing arm from shaking violently during vehicle operation and reduce the collision friction between the sensor housing and the swing arm.

[0025] According to another specific embodiment of the present invention, a vehicle chassis height sensor is disclosed, which further includes a magnet and a sensing unit. The magnet is disposed in the connecting cavity and mounted on the mounting part. The sensing unit is disposed in the connecting part, and the magnet is spaced apart above the sensing unit. The sensing unit includes a Hall element.

[0026] Using the above technical solution, the magnetic field of the magnet will change during the rotation of the swing arm, so the position of the swing arm can be obtained by measuring the change in the magnetic field of the magnet.

[0027] To achieve the above objectives, the present invention also provides a vehicle including a vehicle chassis height sensor as described in any of the above embodiments. Attached Figure Description

[0028] Figure 1 A three-dimensional representation of a vehicle chassis height sensor according to an embodiment of the present invention is shown. Figure 1 ;

[0029] Figure 2 A three-dimensional representation of a vehicle chassis height sensor according to an embodiment of the present invention is shown. Figure 2 ;

[0030] Figure 3 An exploded view of a vehicle chassis height sensor according to an embodiment of the present invention is shown;

[0031] Figure 4A A cross-sectional view of a vehicle chassis height sensor according to an embodiment of the present invention is shown;

[0032] Figure 4B This is a partially enlarged view of the lubricating oil spill prevention area inside the vehicle chassis height sensor according to an embodiment of the present invention;

[0033] Figure 5 A cross-sectional view of the swing arm of the vehicle chassis height sensor according to an embodiment of the present invention is shown;

[0034] Figure 6 A perspective view of the slotted portion in the swing arm of the vehicle chassis height sensor according to an embodiment of the present invention is shown.

[0035] Figure 7 A schematic diagram showing the slotted portion in the swing arm of the vehicle chassis height sensor according to an embodiment of the present invention;

[0036] Figure 8 A perspective view of the sensor housing of the vehicle chassis height sensor according to an embodiment of the present invention is shown.

[0037] Figure 9 This diagram shows the position of the retaining ring groove of the vehicle chassis height sensor according to an embodiment of the present invention. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0039] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the 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 the utility model.

[0041] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0042] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0043] The vehicle chassis height sensor includes a sensor housing and a swing arm. During use, the swing arm can rotate relative to the sensor housing, and lubricating oil is stored between the sensor housing and the swing arm. In existing technology, a sealing ring is generally used to seal the connection between the swing arm and the sensor housing, preventing lubricating oil leakage. However, using a sealing ring not only increases manufacturing costs but also has limited effectiveness in preventing lubricating oil leakage; the lubricating oil can still overflow, leaving the bottom of the space between the sensor housing and the swing arm without lubricating oil. This overflowing lubricating oil can easily exacerbate wear between the sensor housing and the swing arm, causing friction noise during rotation.

[0044] To address the aforementioned issues, prevent lubricating oil spillage, and extend the sensor's lifespan, the vehicle chassis height sensor of this application provides a slotted portion with an annular groove at the bottom end of the swing arm, allowing lubricating oil to be stored within the annular groove and preventing it from overflowing upwards into the sensor housing.

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0046] refer to Figures 1 to 3 This application provides a vehicle chassis height sensor. The vehicle chassis height sensor of this application includes a sensor housing 10 and a swing arm 20.

[0047] Specifically, the sensor housing 10 includes a connecting portion 11 disposed at one end of the sensor housing 10, the connecting portion 11 being along a first direction (e.g., Figures 1-3 As shown in the Z direction (i.e., the axial direction of the connecting portion 11), it extends and is provided with a connecting cavity 111. Exemplarily, the sensor housing 10 also includes a connector 12 disposed at the other end of the sensor housing 10, the connector 12 extending along a second direction (e.g., as shown in the Z direction, i.e., the axial direction of the connecting portion 11) and having a connecting cavity 111. Figures 1-3 Extending in the X direction, connector 12 can be connected to an external device (not shown in the figure) to transmit the chassis position signal of the vehicle chassis height sensor of this embodiment to the external device.

[0048] The swing arm 20 includes a first end 21 and a second end 22. The first end 21 has a mounting portion 211 extending along a first direction Z and fitted into a connecting cavity 111. The mounting portion 211 is rotatably connected to the connecting portion 111. That is, the swing arm 20 of the vehicle chassis height sensor in this embodiment can rotate relative to the sensor housing 10 along a third direction R. Exemplarily, the second end 22 of the swing arm 20 in this embodiment extends along a fourth direction (e.g., ...). Figure 1Extending in the Y direction (as shown in the middle), the fourth direction Y is parallel to the second direction X. The second end 22 of the swing arm 20 is also provided with a swing arm ball joint 23 integrally formed with the swing arm 20. The swing arm ball joint 23 can connect the swing arm 20 to the vehicle chassis control arm (which can control the change of vehicle chassis height) through components such as connecting rods. Thus, the swing arm 20 can move along a third direction (as shown in the middle Y direction) as the vehicle chassis height changes. Figures 1-3 Rotate by a certain angle (as shown in the R direction).

[0049] refer to Figure 4A , Figures 4B to 5 The mounting portion 211 has a slotted portion 221 on its side wall, which extends along the first direction Z and is located on the side of the mounting portion 211 near the bottom surface of the sensor housing 10. Lubricating oil is stored between the slotted portion 221 and the connecting cavity 111. The slotted portion 221 has multiple annular grooves 224 spaced apart along the first direction Z. The annular grooves 224 are recessed inward relative to the cavity wall 1111 of the connecting cavity 111. Therefore, the annular grooves 224 and the cavity wall 1111 of the connecting cavity 111 form a lubricating oil overflow prevention area 225. The lubricating oil overflow prevention area 225 restricts the lubricating oil from overflowing into the connecting cavity 111 along the first direction Z, thereby preventing frictional noise from the sensor due to reduced lubricating oil and extending the service life of the vehicle chassis height sensor. It eliminates the need for sealing rings to seal the swing arm and sensor housing, simplifying the assembly process and saving costs.

[0050] To make the structure of the annular groove 224 in the embodiments of this application clearer, the structure of the annular groove 224 will be described in further detail below with reference to the accompanying drawings.

[0051] refer to Figures 6 to 7 The slotted part 221 includes multiple frustums 223 and multiple cylinders 222. The frustums 223 and cylinders 222 are arranged alternately along the first direction Z, that is, a frustum 223 is connected between every two cylinders 222. The number of cylinders 222 is one more than the number of frustums 223 or the number of frustums 223 is one more than the number of cylinders 222. The number of frustums 223 can be set to 3, 4, or 5, but is not limited to this. Other numbers of frustums 223 can also be used.

[0052] The cross-sectional area of ​​the frustum 223 gradually decreases from the inside to the outside along the first direction Z. The frustum 223 is located between two adjacent cylinders 222. The outer peripheral surface 2233 of the frustum 223 and the upper surface 2221 of an adjacent cylinder 222 define an annular groove 224. The annular grooves 224 are evenly spaced along the first direction Z. All the annular grooves 224 are coaxially arranged. The number of annular grooves 224 is the same as the number of frustums 223.

[0053] The lower surface 2232 of the frustum 223 is coplanar with the upper surface 2221 of the adjacent cylinder 222. Furthermore, the area of ​​the upper surface 2231 of the frustum 223 is smaller than the area of ​​the lower surface 2222 of the cylinder 222, and the area of ​​the lower surface 2232 of the frustum 223 is equal to the area of ​​the upper surface 2221 of the cylinder 222. Since the area of ​​the lower surface 2222 of the cylinder 222 is larger than the area of ​​the upper surface 2231 of the frustum 223, the portion of the lower surface 2222 of the cylinder 222 that extends beyond the upper surface 2231 of the frustum 223 can act as a physical baffle 2223, which can prevent lubricating oil from overflowing from the annular groove 224.

[0054] For example, the shapes and outer peripheral dimensions of each frustum 223 are the same, and the shapes and outer peripheral dimensions of each cylinder 222 are the same. This design not only simplifies the machining process, but also makes the structure of the annular groove 224 formed by the frustum 223 and the cylinder 222 regular, so that the lubricating oil is evenly distributed and has good stability in each annular groove 224.

[0055] In this embodiment, the included angle α between the outer peripheral surface 2233 of the frustum 223 and the lower surface 2222 of the cylinder 222 is 30°, 35°, 40°, or 45°, but is not limited thereto. The included angle α between the outer peripheral surface 2233 of the frustum 223 and the upper surface 2221 of the cylinder 222 depends on the depth of the annular groove 224 along its own radial direction and the height of the frustum 223 along the first direction Z. The depth of the annular groove 224 should be less than the wall thickness of the slotted portion 221. In addition, the size of the annular groove 224 can be limited by limiting the included angle α between the outer peripheral surface 2233 of the frustum 223 and the lower surface 2222 of the cylinder 222, so as to prevent poor overflow prevention effect due to the annular groove 224 being too large or too small.

[0056] refer to Figure 5 and Figure 8 In this embodiment, the first end 21 of the swing arm 20 further includes a sleeve 213 and an extension 212. The sleeve 213 extends along the first direction Z and is spaced apart from the mounting portion 211. The extension 212 is located between the sleeve 213 and the mounting portion 211, protruding from the side wall of the mounting portion 211 and connected to the end of the sleeve 213. The side wall of the mounting portion, the sleeve 213, and the extension 212 together define a mounting space 214. This allows a portion of the side wall 112 of the connecting cavity 111 in this embodiment to be located within the mounting space 214, meaning a portion of the first end 21 of the swing arm 20 is fitted onto the side wall of the connecting cavity 111, enabling the mounting portion 211 and the connecting portion 11 to be rotatably connected.

[0057] refer to Figure 5 and Figure 9The vehicle chassis height sensor in this embodiment of the application also includes a retaining ring 30. Specifically, the outer surface of the side wall of the mounting portion 211 is provided with an annular groove 215. Along the first direction Z, the annular groove 215 is located between the aforementioned side wall 112 and the slotted portion 221 of the connecting cavity 111. The annular groove 215 and the connecting cavity 111 communicate to form a retaining ring groove 31. The retaining ring 30 is installed in the retaining ring groove 31. The retaining ring 30 is used to precisely define the position of the mounting portion 211 relative to the connecting portion 11, prevent the mounting portion 211 from undergoing axial (i.e., first direction Z) displacement during operation, reduce the collision friction between the sensor housing 10 and the swing arm 20, and ensure the accuracy, stability and service life of the vehicle chassis height sensor.

[0058] Furthermore, the vehicle chassis height sensor in this embodiment also includes a magnet 40 and a sensing unit 50. The sensing unit 50 may be a Hall element, but is not limited to this; other elements for monitoring magnetic fields may also be used. Specifically, the magnet 40 is fixedly disposed at the bottom end of the swing arm 20, and the sensing unit 50 is disposed in the bottom wall of the connecting cavity 111. Along the first direction Z, the magnet 40 and the sensing unit 50 are arranged at intervals relative to each other. The magnet 40 and the sensing unit 50 cooperate to detect the chassis position signal (e.g., chassis height signal) when the swing arm 20 rotates relative to the sensor housing 10 along the third direction R as the vehicle chassis height changes.

[0059] The working principle of the magnet 40 and the sensing unit 50 is as follows:

[0060] As the swing arm 20 rotates, the magnetic field of the magnet 40 changes. Therefore, the sensing unit 50 can be used to measure the change in the magnetic field of the magnet 40, thereby obtaining the position of the swing arm 20 during operation.

[0061] This application also provides a vehicle (not shown in the figure), including a vehicle chassis and a chassis suspension, wherein a vehicle chassis height sensor as described in the above embodiments is installed between the vehicle chassis and the chassis suspension to measure changes in the vehicle chassis position parameters.

[0062] The structure and working principle of the sensor housing 10 and the swing arm 20 of this application embodiment will be described in detail below with reference to the accompanying drawings. The vehicle chassis height sensor of this application embodiment has a connecting cavity 111 in the connecting portion 11 of the sensor housing 10, and a mounting portion 211 in the swing arm 20. The mounting portion 211 is rotatably mounted in the connecting cavity 111 along a third direction R. The mounting portion 211 includes a slotted portion 221. Lubricating oil is stored between the slotted portion 221 of the swing arm 20 and the cavity wall 1111 of the connecting cavity 111 in the sensor housing 10. The outer peripheral surface of the slotted portion 221 is in contact with the cavity wall 1111 of the connecting cavity 111, and the lubricating oil can provide lubrication between the swing arm 20 and the sensor housing 10 during the rotation of the swing arm 20. During the operation of the vehicle chassis height sensor of this application embodiment, the swing arm 20 rotates relative to the sensor housing 10 along a third direction R. During the rotation of the swing arm 20, the lubricating oil easily overflows into the connecting cavity 111. Therefore, in this embodiment, multiple annular grooves 224 are formed by alternating frustums 223 and cylinders 222 along the first direction Z. The annular grooves 224 and the cavity wall 1111 of the connecting cavity 111 form a lubricating oil spill prevention area 225, allowing lubricating oil to be stored in the lubricating oil spill prevention area 225. The area of ​​the upper surface 2231 of the frustum 223 is smaller than the area of ​​the lower surface 2222 of the cylinder 222. Therefore, the portion of the lower surface 2222 of the cylinder 222 that extends beyond the upper surface 2231 of the frustum 223 can serve as a physical baffle 2223. During the outward overflow of lubricating oil, the physical baffle 2223 can suppress the overflow of lubricating oil in the annular grooves 224, thereby preventing the lubricating oil from overflowing outward into the connecting cavity 111. This avoids the motion friction between the sensor housing 10 and the swing arm 20 caused by the reduction of lubricating oil, extends the service life of the vehicle chassis height sensor, eliminates the need for a sealing ring between the swing arm 20 and the sensor housing 10, simplifies the assembly process, and saves costs.

[0063] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A vehicle ride height sensor, characterised in that, include: A sensor housing includes a connecting portion disposed thereon, the connecting portion having a connecting cavity extending along a first direction; The swing arm includes a mounting portion disposed at one end of the swing arm, the mounting portion being fitted into the connecting cavity, and the swing arm being rotatable relative to the sensor housing about the first direction; The mounting portion includes a slotted portion, and lubricating oil is stored between the slotted portion and the connecting cavity. The slotted portion is provided with a plurality of annular grooves spaced apart along a first direction. The annular grooves are recessed inward relative to the cavity wall of the connecting cavity to form a lubricating oil spill prevention area with the cavity wall of the connecting cavity. The lubricating oil spill prevention area is used to limit the lubricating oil from overflowing into the connecting cavity along the first direction.

2. A vehicle chassis height sensor as described in claim 1, characterized in that, The slotted portion includes multiple frustums and multiple cylinders, which are alternately connected in sequence along the first direction to form the annular groove. The cross-sectional area of ​​the frustums gradually decreases from the inside to the outside along the first direction.

3. A vehicle chassis height sensor as described in claim 2, characterized in that, The included angle α between the outer circumferential surface of the frustum and the lower surface of the cylinder ranges from 30° to 45°.

4. A vehicle chassis height sensor as described in claim 2, characterized in that, All the truncated cones have the same shape and volume, and all the cylinders have the same shape and volume.

5. A vehicle chassis height sensor as described in claim 2, characterized in that, The frustum is disposed between two adjacent cylinders, and the outer peripheral surface of the frustum and the lower surface of one of the adjacent cylinders define the annular groove. The lower surface of the frustum and the upper surface of the other adjacent cylinder are coplanar.

6. A vehicle chassis height sensor as described in claim 2, characterized in that, The area of ​​the upper surface of the frustum is smaller than the area of ​​the lower surface of the cylinder, and the area of ​​the lower surface of the frustum is equal to the area of ​​the upper surface of the cylinder.

7. A vehicle chassis height sensor as described in claim 1, characterized in that, The swing arm also includes: A sleeve extends along the first direction and is disposed opposite to the side wall of the mounting portion; An extension protrudes from the side wall of the mounting portion and connects to the end of the sleeve. The side wall of the mounting portion, the extension, and the sleeve together define an mounting space. A portion of the sidewall of the connecting part is fitted into the mounting space.

8. A vehicle chassis height sensor as described in claim 1, characterized in that, It also includes a retaining ring, and the outer surface of the side wall of the mounting part is provided with an annular groove. The annular groove and the connecting cavity communicate to form a retaining ring groove. The retaining ring is installed in the retaining ring groove and is used to limit the displacement of the mounting part relative to the connecting part in the first direction.

9. A vehicle chassis height sensor as described in claim 1, characterized in that, It also includes a magnet and a sensing unit. The magnet is disposed in the connecting cavity and mounted on the mounting part. The sensing unit is disposed in the connecting part and the magnet is spaced above the sensing unit. The sensing unit includes a Hall element.

10. A vehicle characterized by comprising: A vehicle ride height sensor comprising any one of the above claims 1-9.

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