A high performance vehicle body height sensor

Abstract

The application relates to a high-performance vehicle body height sensor, and relates to the technical field of sensors, which comprises a sensor main body, a swing arm rotatably connected to the sensor main body, a connecting rod and a cantilever support, a first supporting rod is fixedly arranged at the end of the swing arm away from the sensor main body, a first ball head is fixedly arranged at the end of the first supporting rod, a second supporting rod is fixedly arranged on the cantilever support, a second ball head is fixedly arranged at the end of the second supporting rod, ball grooves are arranged at the two ends of the connecting rod, and oil storage grooves are arranged on the ball grooves; elastic sealing sleeves are arranged on the outer circumferences of the first supporting rod and the second supporting rod, the side edges of the elastic sealing sleeves close to the connecting rod are fixedly connected with the opening edges of the ball grooves; the middle parts of the elastic sealing sleeves are bent parts, and the bent parts and the ball grooves are surrounded by containing cavities for containing solid lubricating liquid; in the application, the lubricating oil can be effectively prevented from falling off during the driving of the automobile, especially on the bumpy road, the abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of sensors, and in particular to a high-performance vehicle height sensor. Background Technology

[0002] A vehicle height sensor is an instrument used to detect the height of a vehicle. It is mainly used in air suspension and active suspension systems in automobiles to detect the vehicle height (i.e., the relative displacement between the vehicle body and the lower suspension arm or shock absorber support in the vertical direction).

[0003] In related technologies, a vehicle height sensor includes a sensing body, a swing arm, and a connecting rod. The sensing body includes a housing, a cover covering the housing, and a sensing component located inside the housing. The sensing component includes a circuit board fixed to the inner wall of the cover and an arc-shaped grid disposed on the circuit board. The swing arm is rotatably connected to the housing via a rotating shaft, and a contact is fixed on the outer periphery of the inner end of the rotating shaft inserted into the housing. The end of the swing arm away from the housing is connected to the connecting rod via a ball joint, and the end of the connecting rod away from the swing arm is also connected to the suspension bracket on the vehicle via a ball joint. The suspension bracket is connected to the vehicle's suspension, and the housing is fixedly mounted on the vehicle body. When the vehicle height changes, the movement of the connecting rod drives the movement of the swing arm, causing the brush to rotate on the arc-shaped grid and converting it into an electrical signal input to the main electronic control unit.

[0004] However, this design has a significant technical problem: the ball joints at both ends of the connecting rod experience severe wear. Because the ball joint structure generates friction during movement, it requires regular application of lubricant to reduce wear. However, during vehicle operation, especially on bumpy roads, the lubricant easily slips off, significantly reducing its lubrication effectiveness. This means the driver needs to frequently reapply lubricant to the ball joints, which is not only cumbersome but also increases maintenance costs, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a high-performance vehicle height sensor that solves the problem of lubricating oil easily falling off the ball joint in the aforementioned related technologies.

[0006] The high-performance vehicle height sensor provided in this application adopts the following technical solution:

[0007] A high-performance vehicle height sensor includes a sensor body, a swing arm, a connecting rod, and a cantilever bracket rotatably connected to a transmission body. A first support rod is fixed to the end of the swing arm away from the sensor body, and a first ball head is fixed to the end of the first support rod. A second support rod is fixed to the cantilever bracket, and a second ball head is fixed to the end of the second support rod. Ball grooves are respectively formed at both ends of the connecting rod, allowing the first and second ball heads to rotate into them. An oil reservoir is provided on the inner wall of each ball groove away from its opening. Elastic sealing sleeves are fitted onto the outer periphery of both the first and second support rods. The side edges of the two elastic sealing sleeves away from the connecting rod are respectively fitted against the inner walls of the first and second support rods. The side edges of the elastic sealing sleeves near the connecting rod are fixedly connected to the opening edge of the ball groove. The middle part of the elastic sealing sleeve is a bent portion, and a receiving cavity for solid lubricant is formed between the bent portion and the ball groove.

[0008] By adopting the above technical solution, the sensor has an oil reservoir on the inner wall of the ball groove of the connecting rod, and elastic sealing sleeves are fitted on the outer periphery of the first and second support rods. These elastic sealing sleeves are fixedly connected to the opening edge of the ball groove and form a bend in the middle, together with the ball groove, forming a receiving cavity to contain solid lubricant. This design not only effectively prevents lubricant from falling off during vehicle operation, especially on bumpy roads, but also ensures good lubrication of the ball joint structure during movement through the continuous release of solid lubricant, thereby reducing wear and extending service life. In addition, the use of elastic sealing sleeves enhances the sealing performance of the ball joint, further improving the stability and reliability of the sensor.

[0009] Optionally, the sensor body includes a housing, a cover mounted on the housing, a circuit board fixed on the inner side of the cover, and a pin assembly fixed on the outside of the housing and connected to the circuit board. An arc-shaped grid is provided on the circuit board. A rotating shaft that is rotatably connected to the housing is fixed at the end of the swing arm away from the connecting rod. The end of the rotating shaft away from the swing arm extends into the housing. A rotating disk is fixed on the outer periphery of the end of the rotating shaft that extends into the housing. A brush that abuts against the arc-shaped grid is obliquely fixed on the rotating disk.

[0010] By adopting the above technical solution, the swing arm is rotatably connected to the housing via a rotating shaft. The rotating disk and its brushes fixed on the shaft can tightly abut against the arc-shaped grid on the circuit board. This design not only ensures the stable sliding of the brushes on the arc-shaped grid, thereby accurately converting changes in vehicle height into electrical signals, but also improves the reliability and accuracy of signal transmission. Simultaneously, the connection between the pin and the circuit board allows the electrical signals to be easily output to the main electronic control unit, realizing effective communication between the sensors and the vehicle control system.

[0011] Optionally, the end of the brush away from the rotating disk is provided with an elastic abutment portion, and the abutment portion is provided with a plurality of elastic claws that bend toward the cover. The elastic claws elastically abut against the arc-shaped grid when the rotating disk rotates.

[0012] By adopting the above technical solution, the elastic abutment portion and its elastic claws fixed at the end of the brush away from the rotating disk can maintain a tight elastic contact with the arc-shaped grid as the rotating disk rotates. This design not only ensures stable contact between the brush and the arc-shaped grid, reducing signal distortion or loss due to poor contact, but also improves the stability and reliability of electrical signal transmission. Simultaneously, the bending design of the elastic claws towards the housing further enhances the contact pressure between the brush and the arc-shaped grid, making the sensor more sensitive and accurate in detecting changes in vehicle height.

[0013] Optionally, the connecting rod has a relief ring groove on the outer edge of the opening of the ball groove, and a rigid sealing ring is embedded in the inner wall of the relief ring groove. The inner edge of the elastic sealing sleeve near the ball groove is fixedly connected to the outer side of the rigid sealing ring.

[0014] By adopting the above technical solution, a rigid sealing ring embedded in the clearance ring groove opened on the outer edge of the ball groove opening is fixedly connected to the inner edge of the side of the elastic sealing sleeve near the ball groove, forming a more stable and reliable sealing structure. This design not only enhances the sealing performance at the ball joint, effectively preventing external impurities from entering the ball groove, but also, the combined use of the rigid sealing ring and the elastic sealing sleeve makes the sealing effect more flexible and adaptable, capable of meeting the sealing requirements under various complex working conditions.

[0015] Optionally, a plurality of limiting protrusions are uniformly fixed on the inner side of the rigid sealing ring around its own axis, and the inner side of the limiting protrusions abuts against the inner wall of the relief ring groove.

[0016] By adopting the above technical solution, several limiting protrusions evenly fixed on the inner surface of the rigid sealing ring can tightly abut against the inner wall of the relief ring groove, thereby effectively preventing the rigid sealing ring from loosening or shifting within the relief ring groove of the connecting rod. This design not only improves the installation stability and reliability of the rigid sealing ring but also ensures a tight connection between it and the elastic sealing sleeve, further enhancing the sealing effect at the ball joint. Simultaneously, the design of the limiting protrusions also allows the rigid sealing ring to distribute pressure more evenly under stress, improving its pressure-bearing capacity and service life.

[0017] Optionally, the connecting rod is fixed with limiting rings on the opening edges of the two ball grooves, and a number of spring pieces are fixed on the side edge of the limiting rings away from the connecting rod; the spring pieces on the two limiting rings can respectively abut against the outer peripheral surfaces of the first ball head and the second ball head, and the spring pieces can also abut against the outer peripheral surfaces of the first support rod and the second support rod when the first ball head and the second ball head rotate relative to each other.

[0018] By adopting the above technical solution, the spring on the limiting ring can not only tightly abut against the outer circumferential surfaces of the first and second ball heads, as well as the outer circumferential surfaces of the first and second support rods, when the ball heads rotate relative to each other, enhancing the stability and reliability of the ball joint, but also synchronously agitate the solid lubricant in the receiving cavity, making it adhere more evenly to the outer surface of the ball heads. This design not only improves the utilization rate of the lubricant, but also ensures that the ball heads are always well lubricated during rotation, further reducing wear and extending the service life of the sensor.

[0019] Optionally, a positioning retaining ring is fixed on the side edge of the limiting ring facing the connecting rod, which engages with the relief ring groove and the rigid sealing ring. The positioning retaining ring has a positioning groove for the limiting protrusion to engage.

[0020] By adopting the above technical solution

[0021] Optionally, a limiting sleeve is fixedly sleeved on the outer periphery of both the first and second support rods. The limiting sleeve has a guide slope on its side edge facing the connecting rod, and the spring piece can slide along the guide slope to abut against the outer periphery of the limiting sleeve.

[0022] By adopting the above technical solution, the positioning retaining ring is fixed on the side edge of the limiting ring facing the connecting rod and is engaged between the relief ring groove and the rigid sealing ring. Simultaneously, the positioning groove on the retaining ring allows the limiting protrusion to engage. This design not only ensures a secure connection between the limiting ring and the connecting rod, preventing displacement or loosening of the limiting ring during rotation, but also achieves precise positioning of the limiting ring through the cooperation of the positioning groove and the limiting protrusion.

[0023] Optionally, a retaining ring is fixed on the outer periphery of the limiting sleeve, and the spring piece can abut against the side of the retaining ring facing the connecting rod. The retaining ring can be moved, adjusted and fixed along the axis of the limiting sleeve.

[0024] By adopting the above technical solution, not only is the range of ball head rotation limited, but the flexibility and convenience of adjustment are also greatly improved. The combination design of the retaining ring and the spring piece allows users to easily change the range of ball head rotation by simply adjusting the position of the retaining ring according to actual needs. This design not only enhances the adaptability and flexibility of the sensor structure, but also provides users with a more personalized and efficient user experience.

[0025] Optionally, the fixing ring includes a left half ring and a right half ring. A first insert block is fixed on the end face of the left half ring, and a first slot for inserting the first insert block is opened on the end face of the right half ring. A second insert block is fixed on the inner side of both the left and right half rings, and a plurality of second slots for inserting the second insert blocks are opened along their own axis on the outer periphery of the limiting sleeve.

[0026] By adopting the above technical solution, the design of the left and right half rings allows the fixing ring to be easily fitted onto the outer periphery of the limiting sleeve, and a tight connection is achieved through the cooperation of the first insert and the first slot. When it is necessary to adjust the installation position of the fixing ring, the second insert is inserted into different second slots to adjust the installation position of the fixing ring, thereby adjusting the rotation range of the first ball head and the second ball head.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. This sensor features an oil reservoir on the inner wall of the ball joint groove in the connecting rod. Elastic sealing sleeves are fitted onto the outer periphery of the first and second support rods. These sleeves are fixedly connected to the opening edge of the ball joint groove and form a bend in their center, together with the ball joint groove, creating a cavity to hold solid lubricant. This not only effectively prevents lubricant from slipping off during vehicle operation, especially on bumpy roads, but also ensures good lubrication of the ball joint structure during movement through the continuous release of solid lubricant, thereby reducing wear and extending service life.

[0029] 2. The spring clips on the limiting ring not only tightly abut against the outer circumferential surfaces of the first and second ball heads, as well as the outer circumferential surfaces of the first and second support rods, during relative rotation, enhancing the stability and reliability of the ball joint, but also synchronously agitate the solid lubricant within the receiving cavity, ensuring it adheres more evenly to the outer surface of the ball heads. This design not only improves the utilization rate of the lubricant but also ensures that the ball heads are consistently well-lubricated during rotation, further reducing wear and extending the sensor's service life. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0032] Figure 2This is an exploded structural diagram illustrating the installation and distribution of the first ball head and the second ball head in Embodiment 1 of this application;

[0033] Figure 3 This is a partial cross-sectional view of Embodiment 1 of this application illustrating the installation and fit of the first ball head;

[0034] Figure 4 This is an exploded structural diagram illustrating the installation distribution of the first ball head and the elastic sealing sleeve in Embodiment 1 of this application;

[0035] Figure 5 This is a partial cross-sectional view of Embodiment 1 of this application illustrating the installation and fit between the housing and the cover;

[0036] Figure 6 This is a schematic diagram illustrating the structure of the brush installation and assembly in Embodiment 1 of this application;

[0037] Figure 7 This is a schematic diagram illustrating the installation and distribution of the rotating disk and the circuit board in Embodiment 1 of this application;

[0038] Figure 8 This is a partial cross-sectional view of Embodiment 2 of this application illustrating the installation and fit of the first ball head;

[0039] Figure 9 This is a schematic diagram illustrating the installation and distribution of the limiting sleeve and limiting ring in Embodiment 2 of this application;

[0040] Figure 10 This is a partial structural diagram illustrating the installation and cooperation of the limiting sleeve and the limiting ring in Embodiment 2 of this application;

[0041] Figure 11 This is a schematic diagram illustrating the installation and distribution of the limiting components in Embodiment 2 of this application;

[0042] Figure 12 This is a partial cross-sectional view of Embodiment 2 of this application, illustrating the installation and cooperation of the limiting sleeve and the limiting ring.

[0043] In the diagram, 1. Sensor body; 11. Support frame; 12. Housing; 13. Housing cover; 14. Circuit board; 141. Arc-shaped grid; 15. Pin; 16. Brush; 161. Elastic abutment; 162. Elastic claw; 2. Swing arm; 21. First support rod; 22. First ball head; 23. Rotating shaft; 24. Rotating disk; 3. Connecting rod; 31. Ball groove; 311. Oil reservoir; 32. Relief ring groove; 4. Cantilever bracket; 41. Second Support rod; 42. Second ball head; 5. Elastic sealing sleeve; 51. Bending part; 6. Rigid sealing ring; 61. Limiting protrusion; 7. Limiting assembly; 71. Limiting ring; 72. Spring piece; 73. Positioning retaining ring; 731. Positioning retaining groove; 8. Limiting sleeve; 81. Guide slope; 82. Second slot; 9. Fixing retaining ring; 91. Left half ring; 911. First insert block; 912. Second insert block; 92. Right half ring; 921. First slot. Detailed Implementation

[0044] The present application will be further described in detail below with reference to all the accompanying drawings.

[0045] Example 1:

[0046] Reference Figure 1 , Figure 2 and Figure 3 A high-performance vehicle height sensor includes a sensor body 1, a swing arm 2, a connecting rod 3, and a cantilever bracket 4 rotatably connected to a transmission body. The end of the swing arm 2 away from the sensor body 1 is fastened with a first support rod 21 by a nut, and the end of the first support rod 21 has a first ball head 22 integrally formed thereon. The cantilever bracket 4 is fastened with a second support rod 41 by a nut, and the end of the second support rod 41 has a second ball head 42 integrally formed thereon.

[0047] The connecting rod 3 has ball grooves 31 at both ends for the first ball head 22 and the second ball head 42 to rotate and be inserted. The inner wall of the ball groove 31 away from its opening is provided with an oil storage tank 311 for solid lubricating oil to be inserted. A support frame 11 is fixedly provided on the outside of the sensor body 1.

[0048] When this vehicle height sensor is used, the support frame 11 is fixed to the vehicle body, and then the cantilever bracket 4 is fixed to the vehicle suspension. When the vehicle height changes, the movement of the linkage 3 can drive the movement of the swing arm 2, thereby causing the sensor body 1 to change, and converting it into an electrical signal input to the main electronic control unit.

[0049] Reference Figure 3 and Figure 4The first support rod 21 and the second support rod 41 are both fitted with rubber elastic sealing sleeves 5. The side edges of the two elastic sealing sleeves 5 away from the connecting rod 3 are respectively in contact with the inner walls of the first support rod 21 and the second support rod 41. The side edges of the elastic sealing sleeves 5 near the connecting rod 3 are fixedly connected to the opening edge of the ball groove 31. The middle part of the elastic sealing sleeve 5 is a bent part 51. A receiving cavity for solid lubricating oil to be placed is formed between the bent part 51 and the ball groove 31.

[0050] When the first ball head 22 and the second ball head 42 rotate relative to the connecting rod 3, the elastic sealing sleeve 5 can undergo corresponding elastic deformation. During this process, the elastic sealing sleeve 5 protects the upper part of the ball groove 31 and reduces the possibility of solid lubricating oil falling out of the accommodating cavity.

[0051] Reference Figure 3 and Figure 4 The connecting rod 3 has a relief ring groove 32 on the outer edge of the opening of the ball groove 31. A rigid sealing ring 6 is embedded in the inner wall of the relief ring groove 32. Six limiting protrusions 61 are evenly fixed on the inner side of the rigid sealing ring 6 around its own axis.

[0052] After the rigid sealing ring is installed, the inner sides of the six limiting protrusions 61 abut against the inner wall of the relief ring groove 32. The inner edge of the elastic sealing sleeve 5 near the ball groove 31 is fitted onto the outer side of the rigid sealing ring 6 and fixedly connected to it by glue or heat fusion.

[0053] Reference Figure 5 , Figure 6 and Figure 7 The sensor body 1 includes a housing 12, a cover 13 mounted on the housing 12, a circuit board 14 fixed on the inner side of the cover 13, and a pin 15 fixed on the outside of the housing 12 and connected to the circuit board 14. The circuit board 14 is provided with an arc-shaped grid 141. One end of the external cable is plugged into the pin 15 and the other end is connected to the control system.

[0054] The end of the swing arm 2 away from the connecting rod 3 is vertically fixed with a rotating shaft 23 that is rotatably connected to the housing 12. The end of the rotating shaft 23 away from the swing arm 2 extends into the housing 12. A rotating disk 24 is fixed on the outer periphery of the inner end of the rotating shaft 23. A brush 16 that abuts against the arc-shaped electric grid 141 is fixed on the rotating disk 24 at an angle. An elastic abutment portion 161 is integrally formed on the end of the brush 16 away from the rotating disk 24. Several elastic claws 162 that bend toward the housing cover 13 are fixed on the abutment portion.

[0055] When the vehicle height changes, the movement of the linkage 3 drives the movement of the swing arm 2, which causes the brush 16 to rotate on the arc-shaped grid 141. During this process, the elastic claw 162 elastically abuts against the arc-shaped grid 141. Even if the elastic claw 162 experiences some wear, it will still maintain contact with the arc-shaped grid 141 under the action of elastic force. During this process, the change in height is converted into an electrical signal and transmitted to the main electronic control unit through the connector.

[0056] The implementation principle of this application embodiment is as follows:

[0057] When the vehicle height changes, the cantilever bracket 4 drives the connecting rod 3 and the swing arm 2 to move. The rotating shaft 23 and the rotating disk 24 on the swing arm 2 rotate accordingly. The brush 16 on the rotating disk 24 slides on the arc-shaped grid 141, generating an electrical signal. During this process, the first ball head 22 and the second ball head 42 rotate within the ball groove 31 of the connecting rod 3. The elastic sealing sleeve 5 and the rigid sealing ring 6 ensure that the solid lubricating oil does not fall off, ensuring smooth rotation. At the same time, the elastic claw 162 maintains elastic contact with the arc-shaped grid 141, maintaining contact even if wear occurs, ensuring the stability of signal transmission. Finally, the electrical signal is transmitted to the main electronic control unit through the pin 15 and the external cable, realizing real-time monitoring of the vehicle height.

[0058] Example 2:

[0059] Reference Figure 8 , Figure 9 and Figure 10 The difference between this embodiment and Embodiment 1 is that the connecting rod 3 is provided with a limiting component 7 on its outside. The limiting component 7 includes a limiting ring 71 fixed on the opening edge of the two ball grooves 31. Six spring pieces 72 are uniformly fixed on the side edge of the limiting ring 71 away from the connecting rod 3 around its own axis.

[0060] When the first ball head 22 and the second ball head 42 rotate relative to each other, the spring pieces 72 on the two limiting rings 71 can abut against the outer peripheral surfaces of the first ball head 22 and the second ball head 42, and can also abut against the outer peripheral surfaces of the first support rod 21 and the second support rod 41. During this process, the spring pieces 72 synchronously agitate the fixed lubricating oil in the receiving cavity, so that it adheres more evenly to the outer surfaces of the first ball head 22 and the second ball head 42, thereby enhancing its lubrication effect.

[0061] Reference Figure 10 and Figure 11 The limiting ring 71 has an integrally formed positioning ring 73 on the side edge facing the connecting rod 3, which is embedded between the relief ring groove 32 and the rigid sealing ring 6. The positioning ring 73 has a positioning groove 731 for the limiting protrusion 61 to be embedded in; thereby realizing the installation and fixation of the limiting ring 71 and the connecting rod 3.

[0062] Reference Figure 11 and Figure 12 Limiting sleeves 8 are fixedly fitted on the outer periphery of the first support rod 21 and the second support rod 41. The limiting sleeve 8 has a guide slope 81 on the side edge facing the connecting rod 3. The spring piece 72 can slide along the guide slope 81 to abut against the outer periphery of the limiting sleeve 8; thereby protecting the outer periphery of the first support rod 21 and the second support rod 41.

[0063] Reference Figure 11 and Figure 12 A retaining ring 9 is fixed on the outer periphery of the limiting sleeve 8. The retaining ring 9 includes a left half ring 91 and a right half ring 92. A first insert block 911 is fixed on the end face of the left half ring 91, and a first slot 921 for inserting the first insert block 911 is opened on the end face of the right half ring 92.

[0064] The inner surfaces of the left half ring 91 and the right half ring 92 are both fixed with second insert blocks 912. The outer periphery of the limiting sleeve 8 is provided with several second slots 82 along its own axis for the second insert blocks 912 to be inserted into. This not only realizes the installation and fixation of the retaining ring 9, but also allows the second insert blocks 912 to be inserted into different second slots 82 to adjust the installation position of the retaining ring 9.

[0065] During the relative rotation of the first ball head 22 and the second ball head 42, the spring piece 72 can abut against the side of the retaining ring 9 facing the connecting rod 3. During this process, the combination of the retaining ring 9 and the spring piece 72 can limit the rotation range of the first ball head 22 and the second ball head 42; and the installation position of the retaining ring 9 can be adjusted to adjust the rotation range of the first ball head 22 and the second ball head 42.

[0066] The implementation principle of this application embodiment is as follows:

[0067] A limiting ring 71 and a spring piece 72 are added to the edge of the opening of the ball groove 31 of the connecting rod 3. The contact between the spring piece 72 and the outer circumference of the ball head and the support rod not only enhances the lubrication effect of the lubricating oil, but also limits the rotation range of the ball head. The limiting ring 71 is fixed to the connecting rod 3 by the positioning retaining ring 73. The spring piece 72 can agitate the lubricating oil during rotation, making it adhere more evenly. At the same time, the setting of the limiting sleeve 8 and the fixing retaining ring 9 not only protects the outer circumference of the support rod, but also allows for flexible adjustment of the rotation range of the ball head by adjusting the installation position of the fixing retaining ring 9.

[0068] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0069] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-performance vehicle body height sensor, comprising a sensor main body (1), a swing arm (2) rotatably connected to the sensor main body, a connecting rod (3) and a cantilever support (4), an end of the swing arm (2) away from the sensor main body (1) is fixedly provided with a first supporting rod (21), an end of the first supporting rod (21) is fixedly provided with a first ball head (22); the cantilever support (4) is fixedly provided with a second supporting rod (41), an end of the second supporting rod (41) is fixedly provided with a second ball head (42), both ends of the connecting rod (3) are respectively provided with a ball groove (31) for rotatably placing the first ball head (22) and the second ball head (42), an oil storage groove (311) is arranged on the inner wall of the ball groove (31) away from the opening thereof; characterized in that elastic sealing sleeves (5) are sleeved on the outer periphery of the first supporting rod (21) and the second supporting rod (41), the side edges of the two elastic sealing sleeves (5) away from the connecting rod (3) are respectively attached to the inner walls of the first supporting rod (21) and the second supporting rod (41), and the side edges of the elastic sealing sleeves (5) close to the connecting rod (3) are fixedly connected to the opening edges of the ball grooves (31); the middle part of the elastic sealing sleeve (5) is a bending part (51), and a containing cavity for placing solid lubricating liquid is arranged between the bending part (51) and the ball groove (31); the connecting rod (3) is provided with a deflection ring groove (32) on the outer edge of the opening of the ball groove (31), a rigid sealing ring (6) is embedded on the inner wall of the deflection ring groove (32), and the inner edge of the side of the elastic sealing sleeve (5) close to the ball groove (31) is fixedly connected to the outer side of the rigid sealing ring (6); a plurality of limiting protrusions (61) are uniformly fixed on the inner side of the rigid sealing ring (6) around the axis thereof, and the inner side of the limiting protrusion (61) abuts against the inner wall of the deflection ring groove (32); the connecting rod (3) is fixedly provided with a limiting ring (71) on the opening edge of each of the two ball grooves (31), and a plurality of elastic sheets (72) are fixedly arranged on the side edge of the limiting ring (71) away from the connecting rod (3); the elastic sheets (72) on the two limiting rings (71) can respectively abut against the outer periphery of the first ball head (22) and the second ball head (42), and the elastic sheets (72) can also abut against the outer periphery of the first supporting rod (21) and the second supporting rod (41) when the first ball head (22) and the second ball head (42) relatively rotate; the outer periphery of the first supporting rod (21) and the second supporting rod (41) is fixedly sleeved with a limiting sleeve (8), the side edge of the limiting sleeve (8) facing the connecting rod (3) is provided with a guide inclined surface (81), the elastic sheet (72) can slide along the guide inclined surface (81) to a state of abutting against the outer periphery of the limiting sleeve (8), and the outer periphery of the limiting sleeve (8) is fixedly provided with a fixed clamping ring (9), the elastic sheet (72) can abut against the side of the fixed clamping ring (9) facing the connecting rod (3), and the fixed clamping ring (9) can be moved, adjusted and fixed along the axis of the limiting sleeve (8). The fixed clasp (9) comprises a left half ring (91) and a right half ring (92), a first plug (911) is fixed on the end face of the left half ring (91), a first plug groove (921) is formed on the end face of the right half ring (92) for inserting the first plug (911); the inner side face of the left half ring (91) and the right half ring (92) are both fixed with a second plug (912), and a plurality of second plug grooves (82) are formed on the outer periphery of the limiting sleeve (8) along the axis of the limiting sleeve (8) for clamping the second plug (912).

2. The high performance body height sensor according to claim 1, characterized in that The sensor body (1) comprises a shell (12), a shell cover (13) mounted on the shell (12), a circuit board (14) fixed on the inner side face of the shell cover (13), and a pin element (15) fixed on the outside of the shell (12) and connected with the circuit board (14), wherein the circuit board (14) is provided with an arc-shaped electric grid (141); The end of the swing arm (2) away from the connecting rod (3) is fixed with a rotating shaft (23) rotatably connected with the shell (12), the end of the rotating shaft (23) away from the swing arm (2) extends into the shell (12), and the end of the rotating shaft (23) extending into the shell (12) is fixed with a rotating disc (24), and the rotating disc (24) is fixed with an electric brush (16) inclined and abutting against the arc-shaped electric grid (141).

3. A high performance body height sensor according to claim 2, wherein The end of the electric brush (16) away from the rotating disc (24) is fixed with an elastic abutting portion (161), a plurality of elastic claws (162) are fixed on the abutting portion and bent towards the shell cover (13), and the elastic claws (162) are elastically abutted against the arc-shaped electric grid (141) when the rotating disc (24) rotates.

4. The high performance body height sensor according to claim 1, wherein The side face edge of the limiting ring (71) towards the connecting rod (3) is fixed with a positioning clasp (73) clamped between the allowing ring groove (32) and the rigid sealing ring (6), and the positioning clasp (73) is provided with a positioning clasp groove (731) for clamping the limiting protrusion (61).

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