Chassis position sensor and vehicle

Abstract

The utility model discloses a chassis position sensor and vehicle, chassis position sensor includes: base, including setting up in the connecting portion of base, and connecting portion has the connecting cavity, swing arm, including setting up in the mounting portion of swing arm one end, part mounting portion assembly enters the connecting cavity, and make swing arm rotatable relative to base, and mounting portion is equipped with the inner chamber that communicates with the connecting cavity, and the inner chamber storage has lubricating oil, and chassis position sensor still includes the drive assembly of assembly in the inner chamber, and drive assembly is used for driving lubricating oil to supplement between mounting portion and connecting cavity, the utility model discloses can continue to supplement lubricating oil, avoids producing friction noise.

Description

Technical Field

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

[0002] Chassis position sensors are commonly used components in vehicles to measure chassis position parameters. Existing automotive chassis position sensors experience grease consumption during use. If the grease is depleted, dry friction will occur between the relatively moving parts inside the sensor, leading to increased noise, accelerated wear, and in severe cases, damage to the sensor. However, most current chassis position sensors are not designed with long-term grease replenishment in mind. Once the grease is depleted, the sensor needs to be disassembled for maintenance, which is time-consuming, labor-intensive, and further increases costs. Utility Model Content

[0003] The purpose of this invention is to solve the problem of noise generated by friction in existing chassis position sensors. This invention provides a chassis position sensor and vehicle that can continuously replenish grease, thus preventing friction noise.

[0004] To address the aforementioned technical problems, this utility model discloses a chassis position sensor, comprising: a base, including a connecting portion disposed on the base, the connecting portion having a connecting cavity; a swing arm, including a mounting portion disposed at one end of the swing arm, a portion of the mounting portion being fitted into the connecting cavity, thereby allowing the swing arm to rotate relative to the base; the mounting portion having an inner cavity communicating with the connecting cavity, the inner cavity storing lubricating oil; the chassis position sensor further comprising a driving assembly fitted into the inner cavity, the driving assembly being used to drive the lubricating oil to replenish between the mounting portion and the connecting cavity.

[0005] Using the above technical solution, in this embodiment of the application, a drive assembly is provided in the inner cavity of the mounting part, and lubricating oil is stored in the inner cavity so that the lubricating oil can automatically flow into the mounting part and the connecting cavity under the action of force (e.g., elastic force) through the drive assembly, thereby playing a role in lubricating friction.

[0006] Compared to existing technologies where the grease in chassis position sensors is easily lost during movement and cannot be replenished, the lubricating oil stored in the inner cavity of this embodiment can not only fill the space between the mounting part and the connecting cavity during assembly, but also, after the mounting part of the swing arm rotates relative to the connecting part of the base and causes grease loss, the amount of grease between the mounting part and the connecting cavity decreases, resulting in the pressure between the mounting part and the connecting cavity being less than the pressure inside the inner cavity. This reduces the resistance of the drive component in releasing the grease, and the lubricating oil stored in the inner cavity can also be continuously replenished into the friction gap under the drive of the drive component, avoiding friction noise and aggravating wear, and extending the service life of the chassis position sensor of this embodiment.

[0007] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the inner cavity has a closed end and an open end, the closed end is not connected to the outside, the open end is connected to the connecting cavity, the lubricating oil is stored between the closed end and the open end, and the driving assembly is capable of driving the closed end to move along a first direction to drive the lubricating oil to flow through the open end into the space between the mounting part and the connecting cavity.

[0008] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor. The mounting part further includes an oil supply hole, which communicates with the inner cavity and the connecting cavity respectively. The driving assembly includes: a fixing part, which is disposed at the end of the inner cavity away from the oil supply hole; a pushing part, which is disposed in the inner cavity and has a first end and a second end disposed opposite to each other along the first direction; an elastic part, which is located between the first end of the fixing part and the first end of the pushing part and abuts against the first end of the fixing part and the first end of the pushing part respectively, so that the fixing part and the pushing part are elastically connected; the inner cavity also has an oil storage channel for storing the lubricating oil. The oil storage channel is located between the pushing part and the oil supply hole. The second end of the pushing part extends into the oil storage channel to form the closed end. The end of the oil storage channel away from the pushing part communicates with the oil supply hole to form the open end. The second end of the pushing part can move relative to the fixing part along the first direction.

[0009] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the oil storage channel extends along the first direction, the inner wall of the oil storage channel protrudes from the side wall of the inner cavity, along the first direction, the first end of the pushing part is located above the oil storage channel, the second end of the pushing part is adapted to the inner wall of the oil storage channel and extends into the oil storage channel, and the second end of the pushing part and the inner wall of the oil storage channel together define an oil supply channel.

[0010] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the cross-sectional area of ​​the second end of the push part is larger than the cross-sectional area of ​​the oil supply hole.

[0011] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the first end of the pushing part includes an annular flange, the upper surface of the annular flange abuts against the elastic part, and the lower surface of the annular flange can abut against the top end of the oil storage channel to restrict the pushing part from moving downward in the first direction.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor. The mounting part further includes: a sleeve extending along the first direction and disposed opposite to the side wall of the mounting part; an extension protruding from the side wall of the mounting part and connected to the bottom end of the sleeve. The side wall of the mounting part, the extension, and the sleeve together define an mounting space. A portion of the side wall of the connecting cavity is fitted into the mounting space. The mounting space communicates with the connecting cavity. A sealing element is provided on the portion of the side wall of the connecting cavity. The sealing element is located between the portion of the side wall of the connecting cavity and the inner surface of the sleeve, and is sealed to the portion of the side wall of the connecting cavity and the inner surface of the sleeve, respectively.

[0013] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the outer surface of the partial sidewall of the connecting cavity is provided with a first annular groove, the sealing member is sealed and connected in the first annular groove, and is sealed and connected to the inner surface of the sleeve.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a chassis position sensor, wherein the fixing part includes a plurality of fixing brackets arranged at an angle, and along the first direction, the end of each fixing bracket is connected to the side surface of the mounting part away from the connecting cavity.

[0015] To achieve the above objectives, the present invention also provides a vehicle including a chassis position sensor as described in any of the above embodiments. Attached Figure Description

[0016] Figure 1A An exploded view of a chassis position sensor in a conventional embodiment is shown;

[0017] Figure 1B A cross-sectional view of a chassis position sensor in a conventional embodiment is shown;

[0018] Figure 2A perspective view of the chassis position sensor according to an embodiment of the present invention is shown;

[0019] Figure 3 A partial cross-sectional view of the chassis position sensor according to an embodiment of the present invention is shown;

[0020] Figure 4A An exploded view of the swing arm of the chassis position sensor according to an embodiment of the present invention is shown;

[0021] Figure 4B A perspective view of the base of the chassis position sensor according to an embodiment of the present invention is shown;

[0022] Figure 5A A cross-sectional view of the swing arm of the chassis position sensor according to an embodiment of the present invention is shown.

[0023] Figure 5B A cross-sectional view of the swing arm of the chassis position sensor according to an embodiment of the present invention is shown. Figure 2 . Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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 referred element 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.

[0027] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0028] 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.

[0029] 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.

[0030] Figure 1A An exploded view of a sensor in a conventional implementation is shown. Figure 1B A cross-sectional view of a sensor in a conventional implementation is shown.

[0031] like Figure 1A and Figure 1B As shown, the sensor 100 includes a swing arm 101 and a base 102. One end of the swing arm 101 and one end of the base 102 are aligned along a first direction (e.g., ...). Figure 1A and Figure 1B As shown in the Z-direction, the swing arm 101 is arranged from bottom to top, with one end rotatably connected to one end of the base 102. The other end of the swing arm 101 has a ball joint 1011 integrally formed with it. The ball joint 1011 can connect the swing arm 101 to the vehicle chassis control arm (which controls changes in vehicle chassis height) via connecting rods or other components, thus allowing the swing arm 101 to move along a third direction (e.g., as shown in the Z-direction) in accordance with changes in vehicle chassis height. Figure 1A and Figure 1B (As shown in the R direction) Rotate by a certain angle. That is to say, the angle by which the swing arm 101 rotates along the third direction R can reflect the height of the vehicle chassis.

[0032] Continue to refer to Figure 1A and Figure 1B The base 102 has an opening at one end, forming a receiving cavity 1021, so that the swing arm 101 can extend into the receiving cavity 1021 through the opening in the first direction Z and rotate in the third direction. Exemplarily, the swing arm 101 extending into the receiving cavity 1021 is also provided with a retaining ring 1012, and the outer wall of the receiving cavity 1021 is also provided with a sealing member 1022 to seal against the swing arm 101, ensuring a tight seal during rotation in the third direction R.

[0033] Furthermore, grease is injected into the receiving cavity 1021. When one end of the swing arm 101 is pressed into the receiving cavity 1021, the grease in the receiving cavity 1021 is squeezed and spreads to the seal 1022, thus providing lubrication between the aforementioned end of the swing arm 101 and the receiving cavity 1021. However, as the swing arm 101 rotates relative to the base 102 in a third direction R, the grease at the seal 1022 will experience motion loss and will not be replenished, resulting in a lack of lubrication at the seal 1022, causing noise, accelerated wear, and even damage to the sensor.

[0034] To address the aforementioned issues and extend the lifespan of the sensor, this application provides a chassis position sensor 200. By incorporating an inner cavity for storing lubricating oil and installing a drive assembly within the cavity, the sensor automatically replenishes lubricating oil after consumption, thereby avoiding dry friction noise and accelerated wear caused by oil consumption.

[0035] refer to Figures 2 to 4B This application provides a chassis position sensor 200. The chassis position sensor 200 of this application includes a base 201 and a swing arm 202.

[0036] Specifically, such as Figure 2 As shown, the base 201 is along the second direction (e.g.) Figure 2 Extending in the X direction, the base 201 includes a connecting portion 2011 disposed at one end 20101 of the base 201. Exemplarily, the base 201 also includes a connector 2012 disposed at the other end 20102 of the base 201. The connector 2012 is capable of connecting to an external device (not shown in the figure) to transmit the chassis position signal of the chassis position sensor 200 of this application embodiment to the external device.

[0037] The connecting part 2011 is along the first direction (e.g.) Figure 2As shown in the Z direction (i.e., the axial direction of the connecting portion 2011), it extends and has a connecting cavity 20111. The aforementioned swing arm 202 includes a first end 202a and a second end 202b. The first end 202a is provided with a mounting portion 2021, which extends along the first direction Z, and a portion of the mounting portion 2021 is fitted into the connecting cavity 20111, allowing the mounting portion 2021 to be rotatably connected to the connecting portion 2011. That is, the swing arm 202 of the chassis position sensor 200 in this embodiment can rotate relative to the base 201 along a third direction R. For example, the second end 202b of the swing arm 202 in this embodiment of the application is also provided with a swing arm ball joint 2022 integrally formed with the swing arm 202. The swing arm ball joint 2022 can connect the swing arm 202 to the vehicle chassis control arm (which can control the change of vehicle chassis height) through components such as connecting rods, so that the swing arm 202 can move along a third direction (e.g., the vehicle chassis height changes) as the vehicle chassis height changes. Figure 2 Rotate by a certain angle (as shown in the R direction).

[0038] refer to Figure 3 and combined Figure 2 The mounting portion 2021 has an inner cavity 202111, which stores lubricating oil. The chassis position sensor 200 in this embodiment also includes a drive assembly 2023 assembled within the inner cavity 202111. The inner cavity 202111 communicates with the connecting cavity 20111, allowing the drive assembly 2023 to drive lubricating oil to be added between the mounting portion 2021 and the connecting cavity 20111. Since the mounting portion 2021 of the swing arm 202 and the connecting portion 2011 of the base 201 can rotate relative to each other in a third direction R, this embodiment injects lubricating oil between the mounting portion 2021 and the connecting cavity 20111 to lubricate the swing arm 202 when it rotates relative to the base 201. In other words, the mounting portion 2021 and the connecting portion 2011 together define a friction gap 203 (see...). Figure 3 Furthermore, the friction gap 203 is filled with lubricating grease. Exemplarily, in this embodiment, the second direction X is perpendicular to the first direction Z, and the third direction R surrounds the first direction Z.

[0039] Therefore, in this embodiment of the application, a drive assembly 2023 is provided in the inner cavity 202111 of the mounting part 2021, and lubricating oil is stored in the inner cavity 202111 so that the lubricating oil can automatically flow into the mounting part 2021 and the connecting cavity 20111 under the action of force (e.g., elastic force) through the drive assembly 2023, so as to play a role in lubricating friction when the swing arm 202 rotates relative to the base 201. Furthermore, compared to existing technologies where the grease in sensors is easily lost during movement and cannot be replenished, the lubricating oil stored in the inner cavity 202111 of this application embodiment can not only fill the space between the mounting part 2021 and the connecting cavity 20111 during assembly, but also reduces the amount of grease between the mounting part 2021 and the connecting cavity 20111 after the grease is lost due to the rotational movement of the swing arm 202 relative to the base 201. This results in the pressure between the mounting part 2021 and the connecting cavity 20111 being less than the pressure inside the inner cavity 202111, thereby reducing the resistance of the drive assembly 2023 in releasing the grease. The lubricating oil stored in the inner cavity 202111 can also be continuously replenished between the mounting part 2021 and the connecting cavity 20111 under the drive of the drive assembly 2023, avoiding frictional noise and aggravating wear, and extending the service life of the chassis position sensor 200 of this application embodiment.

[0040] The structure and working principle of the base 201 and swing arm 202 of this application embodiment will be described in detail below with reference to the accompanying drawings.

[0041] refer to Figures 3 to 5B In this embodiment, the mounting portion 2021 of the swing arm 202 includes a sidewall 20211, and another portion includes a sleeve 20212 and an extension 20213. The sleeve 20212 is disposed opposite to the sidewall 20211, and the extension 20213 protrudes from the sidewall 20211 of the mounting portion 2021 and is located between the sidewall 20211 and the sleeve 20212. Furthermore, the mounting portion 2021 also includes an oil supply hole 202112 communicating with the connecting cavity 20111. Thus, in this embodiment, the drive assembly 2023 is disposed within the inner cavity 202111, and can communicate with the connecting cavity 20111 through the oil supply hole 202112, thereby allowing lubricating oil to pass through the oil supply hole 202112 and enter the friction gap 203 (i.e., between the mounting portion 2021 and the connecting cavity 20111).

[0042] It is understood that the inner cavity 202111 in this embodiment has a closed end and an open end. The closed end of the inner cavity 202111 is not connected to the outside (e.g., the external space outside the inner cavity 202111), while the open end is connected to the connecting cavity 20111. Lubricating oil is contained between the closed end and the open end. Therefore, when the amount of lubricating oil in the friction gap 203 decreases due to wear, the internal pressure of the friction gap 203 is less than the internal pressure of the inner cavity 202111. This reduces the resistance of the drive assembly 2023 in releasing the lubricating oil, enabling the drive assembly 2023 to drive the closed end, thereby driving the lubricating oil to flow into the friction gap 203 through the open end, thus replenishing the friction gap 203 with lubricating oil.

[0043] like Figure 3 and Figure 4A As shown, the drive assembly 2023 includes a fixing part 20231, a pushing part 20232, and an elastic part 20233. The inner cavity 202111 also includes an oil storage channel 20234. Specifically, the fixing part 20231 is fixedly disposed at one end 202112 of the inner cavity 202111 away from the oil supply hole 202112. The pushing part 20232 is disposed inside the inner cavity 202111. The elastic part 20233 is located between the fixing part 20231 and the pushing part 20232, so that the fixing part 20231 and the pushing part 20232 are elastically connected. The oil storage channel 20234 is located between the pushing part 20232 and the oil supply hole 202112. Lubricating oil is stored in the oil storage channel 20234. One end 202341 of the oil storage channel 20234 away from the pushing part 20232 communicates with the oil supply hole 202112 to form the aforementioned open end.

[0044] And among them, such as Figure 5A and Figure 5B As shown, the pushing part 20232 includes a first end 202321 and a second end 202322 disposed opposite each other along a first direction (i.e., axial direction) Z. An elastic part 20233 abuts against the first end 202321 of the pushing part 20232, and the second end 202322 of the pushing part 20232 extends into the oil storage channel 20234 to form the aforementioned closed end. Thus, the elastic part 20233 of the drive assembly 2023 can apply an external force (e.g., an elastic force) to the first end 202321 of the pushing part 20232 to drive the second end 202322 of the pushing part 20232 to move relative to the fixed part 20231 along the first direction Z. That is, the second end 202322 of the pushing part 20232 pushes the lubricating oil along the first direction Z within the oil storage channel 20234 to push the lubricating oil through the oil supply hole 202112 into the friction gap 203 (see...). Figure 3 (i.e., between the mounting part 2021 and the connecting cavity 20111), so that the lubricating oil in the friction gap 203 can be continuously replenished during the warranty period.

[0045] For example, such as Figure 5A and Figure 5B As shown, in this embodiment of the application, the oil storage channel 20234 extends along the first direction Z, and the inner wall 20234a of the oil storage channel 20234 protrudes from the side wall 202111a of the inner cavity 202111.

[0046] Along the first direction Z, the first end portion 202321 of the aforementioned pushing part 20232 is located above the oil storage channel 20234, and the first end portion 202321 of the pushing part 20232 is adapted to the side wall 202111a of the inner cavity 202111. The second end portion 202322 of the pushing part 20232 is adapted to the inner wall 20234a of the oil storage channel 20234 and extends into the oil storage channel 20234. Thus, the second end portion 202322 of the pushing part 20232 and the inner wall of the oil storage channel 20234 jointly define the oil supply channel, so that the drive assembly 2023 of this application embodiment can replenish lubricating oil into the friction gap 203 through the oil supply channel and the oil supply hole 202112.

[0047] In other words, the inner cavity 202111 is a cylindrical cavity with a larger inner diameter at the top and a smaller inner diameter at the bottom, and the oil supply hole 202112 is radially (e.g., Figure 5A and Figure 5B The channel extends in the direction shown in the middle (E direction) and together with the oil storage channel 20234, it forms an "L" shaped channel structure. However, the specific structure of the inner cavity 202111, the oil storage channel 20234 and the oil supply hole 202112 is not limited in the embodiments of this application.

[0048] For example, such as Figure 4A , Figure 5A and Figure 5B As shown, the first end portion 202321 of the pushing part 20232 in this embodiment includes an annular flange 2023211. The upper surface of the annular flange 2023211 abuts against the elastic part 20233, and the lower surface of the annular flange 2023211 can abut against the top end of the oil storage channel 20234 to restrict the downward movement of the pushing part 20232 along the first direction Z (see...). Figure 5A For example, in the embodiments of this application, the elastic part 20233 is a spring and the pushing part 20232 is a piston.

[0049] For example, such as Figure 4A , Figure 5A and Figure 5BAs shown, the fixing part 20231 of this application embodiment includes two fixing brackets 202311 arranged at an angle, namely a cross-shaped fixing bracket. The end 202311a of each fixing bracket 202311 is connected to the outer surface 20213b of the extension part 20213. That is, the end 202311a of each fixing bracket 202311 is connected to the side surface of the mounting part 2021 away from the connecting cavity 20111. However, this application embodiment does not specifically limit the structure of the fixing part 20231. For example, the fixing part 20231 may also include three, four, five, six or more fixing brackets 202311, or the fixing part 20231 may also be a circular or square fixing plate, as long as it can play the role of fixing the elastic part 20233.

[0050] In some possible implementations, such as Figure 5A and Figure 5B As shown, by way of example, the cross-sectional area of ​​the second end 202322 of the pusher 20232 in this embodiment of the application (not shown) is greater than the cross-sectional area of ​​the oil supply hole 202112 (not shown).

[0051] Those skilled in the art will understand that the lubricating oil stored in the inner cavity 202111 has a certain internal pressure. Based on Pascal's principle (that is, in a closed container, the pressure applied to a static fluid will be uniformly transmitted to all parts of the fluid and the container wall), since the cross-sectional area of ​​the second end 202322 is larger than the cross-sectional area of ​​the oil supply hole 202112, the elastic force required to push the lubricating oil out of the oil supply channel (i.e., the oil storage channel 20234) through the elastic part 20233 is large. That is, the resistance of the lubricating oil flowing into the friction gap 203 through the oil supply hole 202112 is large. At the same time, the lubricating oil itself has viscosity. Therefore, the embodiment of this application can slowly release the lubricating oil into the friction gap 203 to meet the lubrication requirements of the chassis position sensor 200 of the embodiment of this application within the warranty period.

[0052] Continue to refer to Figure 5A and Figure 5B Another part of the mounting portion 2021 of the swing arm 202 in this embodiment includes a sleeve 20212 and an extension 20213. The side wall 20211 includes a top end 20211a and a bottom end 20211b, the sleeve 20212 includes a bottom end 20212a and a top end 20212b, and the extension 20213 is located between the side wall 20211 and the sleeve 20212, and is connected to the top end 20211a of the side wall 20211 and the bottom end 20212a of the sleeve 20212, respectively, to define a mounting space 20214.

[0053] Therefore, in this embodiment of the application, a portion of the sidewall 201112 of the connecting cavity 20111 is located within the mounting space 20214, that is, another portion of the mounting portion 2021 of the swing arm 202 is sleeved on the sidewall 201112 of the connecting cavity 20111, so that the mounting portion 2021 and the connecting portion 2011 can be rotatably connected.

[0054] Furthermore, the chassis position sensor 200 in this embodiment of the application also includes a sealing member 204. The sealing member 204 is located between a portion of the side wall 201112 of the connecting cavity 20111 and the inner surface 20212c of the sleeve 20212, and the sealing member 204 is sealed to both the portion of the side wall 201112 of the connecting cavity 20111 and the inner surface 20212c of the sleeve 20212.

[0055] Furthermore, refer to Figure 3 and combined Figures 4A to 5B The inner surface 201111 of the connecting cavity 20111, the top 201112a of a portion of the sidewall 201112 of the connecting cavity 20111, the outer surface 201112b of a portion of the sidewall 201112 of the connecting cavity 20111, the outer surface 20211c of the sidewall 20211, the inner surface 20213a of the extension 20213, the inner surface 20212c of the sleeve 20212, and the seal 204 together define the friction gap 203 (see Figure 3 (As shown by the dashed line in the middle).

[0056] For example, such as Figure 3 As shown, the sealing member 204 in this embodiment is an annular sealing ring, and the sealing member 204 includes a first extension 2041 and a second extension 2042. A first annular groove 201112b is provided on a portion of the outer surface of the sidewall 201112 of the connecting cavity 20111. The first extension 2041 of the sealing member 204 is sealed and connected in the first annular groove 201113, and the second extension 2042 of the sealing member 204 is sealed and connected in the inner surface 20212c of the sleeve 20212. Specifically, along the first direction Z, the first extension segment 2041 is located above the second extension segment 2042. The first extension segment 2041 is sealed and accommodated in the first annular groove 201113. One end of the second extension segment 2042 is connected to the first extension segment 2041. Along the third direction R, the second extension segment 2042 extends outward at an angle, and the other end 20241 of the second extension segment 2042 abuts against the inner surface 20212c of the sleeve 20212 and is sealed and connected to the inner surface 20212c of the sleeve 20212, forming the outermost end of the friction gap 203.

[0057] In other words, the lubricating oil in this embodiment can be transmitted from the oil supply hole 202112 along the friction gap 203 to the other end 20241 of the second extension 2042 of the seal 204. Furthermore, since the lubricating oil at the other end 20241 of the second extension 2042 of the seal 204 is easily consumed during the rotational movement of the swing arm 202 relative to the connection portion 2011 of the base 201, compared to the sensor 100 in the prior art, the chassis position sensor 200 in this embodiment can continuously replenish lubricating oil to the other end 20241 of the second extension 2042 of the seal 204, thus avoiding frictional noise.

[0058] Continue to refer to Figure 3 The chassis position sensor 200 in this embodiment further includes a retaining ring 205. Specifically, the outer surface 20211c of the sidewall 20211 of the mounting portion 2021 is provided with a second annular groove 20211d. Along the first direction Z, the second annular groove 20211d is located between the top end 20211a and the bottom end 20211b of the sidewall 20211. The retaining ring 205 is installed in the second annular groove 20211d and is located in the friction gap 203, which is filled with lubricating oil. Thus, the retaining ring 205 can accurately limit the position of the mounting portion 2021 relative to the connecting portion 2011, preventing axial (i.e., first direction Z) displacement during operation, and ensuring the accuracy, stability and service life of the chassis position sensor 200.

[0059] Furthermore, the chassis position sensor 200 in this embodiment of the application also includes a magnetic element 206 and a sensing element 207. Specifically, the bottom end 20211b of the side wall 20211 of the first end 202a of the swing arm 202 is provided with a mounting portion 208. The magnetic element 206 is fixedly disposed in the mounting portion 208, and the sensing element 207 is disposed in the bottom wall 201114 of the connecting cavity 20111. Along the first direction Z, the magnetic element 206 and the sensing element 207 are arranged opposite to each other so that when the swing arm 202 rotates relative to the base 201 along the third direction R as the vehicle chassis height changes, it can detect the chassis position signal (e.g., chassis height signal).

[0060] This application embodiment also provides a vehicle (not shown in the figure), including a vehicle chassis and a chassis suspension, wherein a chassis position sensor 200 as described in the above embodiment is installed between the vehicle chassis and the chassis suspension to measure changes in the vehicle chassis position parameters.

[0061] In summary, the chassis position sensor 200 of this application embodiment improves upon the prior art chassis position sensor 200 by providing a drive assembly 2023 in the mounting portion 2021 of the swing arm 202 to continuously replenish lubricating oil into the friction gap 203. This addresses the problem of noise and accelerated wear caused by lubricating oil consumption in the prior art chassis position sensor 200, by continuously replenishing lubricating oil, avoiding friction noise, and extending the service life of the chassis position sensor 200.

[0062] 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 chassis position sensor, characterized in that, include: A base, including a connecting portion disposed on the base, the connecting portion having a connecting cavity; The swing arm includes a mounting portion disposed at one end of the swing arm, a portion of the mounting portion being fitted into the connecting cavity, thereby allowing the swing arm to rotate relative to the base; The mounting part is provided with an inner cavity that communicates with the connecting cavity, and the inner cavity stores lubricating oil. The chassis position sensor also includes a drive assembly mounted in the inner cavity, the drive assembly being used to drive the lubricating oil to replenish the space between the mounting portion and the connecting cavity.

2. The chassis position sensor according to claim 1, characterized in that, The inner cavity has a closed end and an open end. The closed end is not connected to the outside, and the open end is connected to the connecting cavity. The lubricating oil is stored between the closed end and the open end. The driving assembly can drive the closed end to move in a first direction to drive the lubricating oil to flow through the open end into the space between the mounting part and the connecting cavity.

3. The chassis position sensor according to claim 2, characterized in that, The mounting part also includes an oil supply hole, which is connected to the inner cavity and the connecting cavity respectively; The driving component includes: The fixing part is located at the end of the inner cavity away from the oil supply hole; The pushing part is disposed in the inner cavity and has a first end and a second end disposed opposite to each other along the first direction; An elastic portion is located between the first ends of the fixing portion and the pushing portion, and abuts against the first ends of the fixing portion and the pushing portion respectively, so that the fixing portion and the pushing portion are elastically connected; The inner cavity also has an oil storage channel for storing the lubricating oil. The oil storage channel is located between the pushing part and the oil supply hole. The second end of the pushing part extends into the oil storage channel to form the closed end. The end of the oil storage channel away from the pushing part is connected to the oil supply hole to form the open end. The second end of the pushing part can move relative to the fixed part along the first direction.

4. The chassis position sensor according to claim 3, characterized in that, The oil storage channel extends along the first direction, and the inner wall of the oil storage channel protrudes from the side wall of the inner cavity. Along the first direction, the first end of the pushing part is located above the oil storage channel, and the second end of the pushing part is adapted to the inner wall of the oil storage channel and extends into the oil storage channel. The second end of the pushing part and the inner wall of the oil storage channel together define the oil supply channel.

5. The chassis position sensor according to claim 4, characterized in that, The cross-sectional area of ​​the second end of the pusher is greater than the cross-sectional area of ​​the oil supply hole.

6. The chassis position sensor according to claim 4, characterized in that, The first end of the pushing part includes an annular flange, the upper surface of which abuts against the elastic part, and the lower surface of which abuts against the top end of the oil storage channel to restrict the pushing part from moving downward in the first direction.

7. The chassis position sensor according to claim 3, characterized in that, The mounting unit 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 bottom end of the sleeve. The side wall of the mounting portion, the extension, and the sleeve together define an installation space. A portion of the sidewall of the connecting cavity is fitted into the mounting space, the mounting space is in communication with the connecting cavity, and a sealing element is provided on the portion of the sidewall of the connecting cavity. The sealing element is located between the portion of the sidewall of the connecting cavity and the inner surface of the sleeve, and is respectively sealed to the portion of the sidewall of the connecting cavity and the inner surface of the sleeve.

8. The chassis position sensor according to claim 7, characterized in that, The outer surface of the partial sidewall of the connecting cavity is provided with a first annular groove, and the sealing element is sealed and connected in the first annular groove and sealed and connected to the inner surface of the sleeve.

9. The chassis position sensor according to claim 3, characterized in that, The fixing part includes a plurality of fixing brackets arranged at an angle. Along the first direction, the end of each fixing bracket is connected to the side surface of the mounting part away from the connecting cavity.

10. A vehicle, characterized in that, Includes the chassis position sensor as described in any one of claims 1-9 above.

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