Vehicle height sensor

Abstract

The utility model relates to the technical field of automobile parts, and specifically to a vehicle height sensor. The technical problem to be solved is to overcome the defect of unstable structural connection in the prior art, which is mainly achieved through the following technical scheme: a vehicle height sensor, comprising: a body, a swing arm and a connecting piece, a socket is provided on one side of the body, a receiving seat is vertically extended on the side of the body away from the socket, the receiving seat is clamped with the swing arm, a sealing piece and a shock absorbing piece are arranged in the receiving seat, and a connecting piece is also provided on the body; a first ball head and a second ball head are vertically provided on the swing arm, the second ball head is integrally arranged with the swing arm, and the second ball head is clamped in the receiving seat; the connecting piece is L-shaped and is arranged on the side of the body away from the socket, a connecting hole is also opened on the connecting piece, the sealing piece and the shock absorbing piece reduce the possibility of loose connection between the second ball head and the body, and the connecting piece further prevents the second ball head from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a vehicle body height sensor. Background Art

[0002] The vehicle height sensor (also called axle height sensor, vehicle posture sensor, suspension height sensor, etc.) is an indispensable component used to measure changes in the front and rear suspension posture of the vehicle body. At present, the vehicle suspension control system (such as active suspension system, suspension damping control system, air suspension system, etc.) and the automatic headlight adjustment system all need to use this sensor to measure changes in the vehicle's driving posture. The vehicle height sensor is an indispensable component in the automatic headlight level adjustment device. The lower control arm of the vehicle is connected to the rotating arm of a vehicle height sensor through a four-bar structure. When the height of the vehicle body changes, the lower control arm will rotate with the rotation axis as the center, and at the same time drive the four-bar mechanism to move. The swing arm of the angle sensor is driven to rotate, and the output signal of the angle sensor changes, which indirectly reflects the change in the height of the vehicle body.

[0003] In the prior art, for the sake of lightweighting of automobiles, plastic parts are mostly used to make sensors, but the strength of plastic parts varies. At the same time, the sensor actuator is composed of many parts, which leads to complicated process flow and low assembly efficiency. During the driving of the vehicle, the connecting rod mechanism composed of the sensor swing arm and the connecting rod is continuously subjected to push-pull force and mechanical vibration, which can easily cause the connection between the ball head and the main body to loosen, and there is even a risk of the ball head falling out of the main body, which increases the sensor detection error or even fails, thereby reducing the reliability of the chassis height sensor actuator. In addition, after the ball head is connected to the main body, if the friction between the contact surface of the swing arm and the main body is insufficient, the connection part is prone to loosening during the driving of the vehicle.

[0004] Therefore, it is necessary to design a vehicle height sensor which can maintain structural stability while ensuring connection stability. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of unstable structural connection in the prior art, thereby providing a vehicle body height sensor.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A vehicle height sensor, comprising:

[0008] A main body, one side of the main body is provided with a socket, a receiving seat is vertically extended from the top of the main body, the receiving seat is clamped with the swing arm, a sealing member is provided on the top of the receiving seat, a shock absorbing member is also provided in the receiving seat, and a connecting member is also provided on the main body;

[0009] A swing arm, wherein a first ball head and a second ball head are vertically arranged on the swing arm, the first ball head is vertically fixed to the swing arm by bolts, the second ball head is integrally arranged with the swing arm, and the second ball head is clamped in a receiving seat;

[0010] The connecting piece is arranged on the side of the main body away from the socket, the connecting piece is L-shaped, the horizontal section of the connecting piece is fixed to the main body by screws, and the vertical section of the connecting piece is provided with a connecting hole.

[0011] By adopting the above technical solution, the swing arm can sense the change of vehicle body height in real time, and then input a control signal for adjusting the vehicle light height, thereby adjusting the vehicle light height and improving the driving safety of the car; the provision of the sealing member and the shock absorbing member reduces the possibility of loose connection between the second ball head and the body, and the connecting member can be connected to other components. The utility model has a simple structure, is easy to process, saves costs, and is low in price.

[0012] Furthermore, the receiving seat is axially provided with an axial hole for accommodating the second ball head, a connected cavity is provided at the bottom of the axial hole, a circuit board is provided in the cavity, a chip is welded on the top of the circuit board, and a pin is also provided on the circuit board, and the pin extends to the socket.

[0013] By adopting the above technical solution, the existence of the shaft hole makes it easy for the second ball head to rotate with the swing arm. The chip is welded and fixed to the circuit board before being placed in the cavity. The pins extend to the sockets to facilitate the connection of different signal adapters, thereby realizing the function of signal transmission.

[0014] Furthermore, a stepped groove is provided at the top of the receiving seat along the inner circumferential wall, and an annular seat is extended from the second ball head corresponding to the stepped groove, and the diameter of the annular seat is larger than the diameter of the second ball head.

[0015] By adopting the above technical solution, the step groove and the annular seat are matched to achieve the initial clamping connection between the receiving seat and the second ball head.

[0016] Furthermore, a receiving groove is extended from the stepped groove, a sealing member is arranged in the receiving groove, and the longitudinal section of the sealing member is in an I-shape.

[0017] By adopting the above technical solution, the seal can prevent dust, splashing water, etc. from entering the interior of the main body. At the same time, the I-shaped cross-section has a certain elasticity, which can reduce the impact of vehicle vibration on the connection between the second ball head and the socket, ensuring that the second ball head will not fall off.

[0018] Furthermore, the shock absorbing member is fixed in the receiving seat, and the shock absorbing member is in an arc shape that fits the second ball head. An oil guide groove is also provided at the location where the shock absorbing member fits the second ball head.

[0019] By adopting the above technical solution, the shock absorber reduces the possibility of the second ball head breaking during driving. At the same time, lubricating oil is added to the oil guide groove, which can reduce the friction of the second ball head on the running-in surface, extend the service life of the second ball head and increase the rotation sensitivity of the second ball head.

[0020] Furthermore, a magnetic ring is rotatably mounted on the bottom of the second ball head, the magnetic ring is arranged opposite to the chip, and an axial groove for accommodating the magnetic ring is provided on the bottom of the second ball head.

[0021] By adopting the above technical solution, the magnetic ring rotates accordingly with the swinging motion of the swing arm, and the chip corresponding to the magnetic ring inputs a control signal for adjusting the vehicle light height to the headlight dimming system on the vehicle body through the circuit board according to the changing magnetic field strength of the magnetic ring, thereby adjusting the vehicle light height and achieving the purpose of real-time control of the vehicle light height.

[0022] Furthermore, the swing arm is provided with reinforcing ribs, and the reinforcing ribs include cross-arranged main ribs and auxiliary ribs fixed in the main ribs, and the height of the auxiliary ribs is lower than the height of the main ribs.

[0023] By adopting the above technical solution, reinforcing ribs are provided instead of thickening the swing arm as a whole, so as to achieve a lightweight setting of the height sensor, and the coordinated setting of the main ribs and auxiliary ribs ensures the tensile strength of the swing arm.

[0024] Furthermore, the first ball head includes a press-fit head and a connecting column, the connecting column is fixed to the swing arm by bolts, the press-fit head is positioned and rotatably installed on the top of the connecting column, the press-fit head is vertically extended with a positioning column, and a positioning hole is vertically opened on the positioning column.

[0025] By adopting the above technical solution, the press-fitting head with positioning columns can achieve positioning during press-fitting, and the positioning holes are used to fix the first ball head and other components connected to the first ball head. At the same time, the first ball head can accept the deflection caused by non-planar installation within a certain range during installation.

[0026] In summary, the technical solution of the utility model has the following advantages:

[0027] 1. The vehicle height sensor provided by the utility model has a swing arm that senses changes in vehicle height in real time, and a magnetic ring rotates accordingly according to the swinging motion of the swing arm. A chip corresponding to the magnetic ring inputs a control signal for adjusting the vehicle light height according to the changing magnetic field strength of the magnetic ring, thereby adjusting the vehicle light height, thereby achieving the purpose of real-time control of the vehicle light height. The assembly process of the entire vehicle height sensor is simple and has high precision.

[0028] 2. The vehicle height sensor provided by the utility model has a sealing member which, on the one hand, performs sealing to ensure that the internal environment is not affected, and on the other hand, is used to stabilize the connection between the second ball head and the receiving seat; the shock absorber reduces the possibility of the second ball head breaking during driving, while extending the service life of the second ball head and increasing the sensitivity of the second ball head's rotation.

[0029] 3. The vehicle height sensor provided by the utility model has a press-fit head that is positioned by a positioning column during press-fitting, and enables the first ball head to accept deflection caused by non-planar installation within a certain range during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of a vehicle height sensor provided in one embodiment of the utility model;

[0032] Figure 2 A partial cross-sectional structural schematic diagram of a second ball head and a receiving seat provided in one embodiment of the utility model;

[0033] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0034] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of the middle B part;

[0035] Figure 5 The figure is a schematic diagram of the partial structure of a first ball head provided in one embodiment of the utility model.

[0036] Description of reference numerals:

[0037] 1. Main body; 11. Socket; 12. Socket; 121. Shaft hole; 122. Step groove; 123. Accommodating groove; 13. Seal; 14. Shock absorber; 141. Oil guide groove; 15. Cavity; 151. Circuit board; 152. Chip; 153. Pin; 2. Swing arm; 21. First ball head; 211. Press-fit head; 2111. Positioning column; 2112. Positioning hole; 212. Connecting column; 22. Second ball head; 221. Annular seat; 222. Magnetic ring; 223. Axial groove; 23. Reinforcing ribs; 231. Main ribs; 232. Auxiliary ribs; 3. Connecting piece; 31. Connecting hole. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] A vehicle height sensor, such as Figure 1 As shown, it includes a body 1, a swing arm 2 and a connecting piece 3. A socket 11 is provided on one side of the body 1. A receiving seat 12 extends vertically from the body 1. A first ball head 21 and a second ball head 22 are provided on the swing arm 2. The first ball head 21 is vertically upwardly arranged on the swing arm 2 by bolts. The second ball head 22 is integrally arranged with the swing arm 2 and vertically downwardly arranged on the swing arm 2. The second ball head 22 is clamped in the receiving seat 12. A reinforcing rib 23 is also provided on the swing arm 2. The reinforcing rib 23 includes a main rib 231 cross-arranged and an auxiliary rib 232 fixed in the main rib 231. The height of the auxiliary rib 232 is lower than that of the main rib 231. The reinforcing rib 23 is provided to improve the structural strength of the swing arm 2. The coordinated arrangement of the main rib 231 and the auxiliary rib 232 ensures the tensile strength of the swing arm 2. The connecting piece 3 is L-shaped and is arranged on the side of the main body 1 away from the socket 11. The horizontal section of the connecting piece 3 is fixed to the main body 1 by screws, and the vertical section of the connecting piece 3 is provided with multiple connecting holes 31. The swing arm 2 can sense the height change of the vehicle body in real time, so as to input a control signal for adjusting the height of the vehicle lights, adjust the height of the vehicle lights, and improve the driving safety of the car. The connecting piece 3 can be connected with other components to increase the adaptability of the device. The utility model has a simple structure, is easy to process, saves costs, and is low in price.

[0040] like Figure 2 As shown, the second ball head 22 is clamped in the socket 12. The socket 12 is axially provided with an axial hole 121 for accommodating the second ball head 22. A connected cavity 15 is provided at the bottom of the axial hole 121. The cavity 15 is arranged along the length direction of the main body 1. A circuit board 151 is placed in the cavity 15. A chip 152 is welded on the circuit board 151. A pin 153 is also welded on one side of the circuit board 151. The pin 153 extends out of the socket 11. The existence of the axial hole 121 facilitates the second ball head 22 to rotate with the swing arm 2. The pin 153 extends to the socket 11 for easy connection of different signal adapters to realize the function of transmitting signals.

[0041] like Figure 2As shown, a magnetic ring 222 is rotatably installed at the bottom of the second ball head 22. The magnetic ring 222 is arranged opposite to the chip 152. An axial groove 223 for accommodating the magnetic ring 222 is opened at the bottom of the second ball head 22. The magnetic ring 222 rotates accordingly according to the swinging action of the swing arm 2. The chip 152 corresponding to the magnetic ring 222 inputs a control signal for adjusting the vehicle light height to the headlight dimming system on the vehicle body through the circuit board 151 according to the changing magnetic field strength of the magnetic ring 222, thereby adjusting the vehicle light height and achieving the purpose of real-time control of the vehicle light height.

[0042] like Figure 2 and Figure 3 As shown, the second ball head 22 extends outwardly to form an annular seat 221 with a diameter larger than that of the second ball head 22. Correspondingly, a stepped groove 122 is provided on the inner peripheral wall of the top of the receiving seat 12. A receiving groove 123 is provided on the stepped groove 122 to extend radially outward. An annular seal 13 is provided in the receiving groove 123. The longitudinal section of the seal 13 is I-shaped. The seal 13 can prevent dust, splashing water, etc. from entering the interior of the main body 1. At the same time, the I-shaped section has a certain elasticity, which can reduce the influence of vehicle vibration on the connection between the second ball head 22 and the receiving seat 12, thereby ensuring that the second ball head 22 will not fall off.

[0043] like Figure 2 and Figure 4 As shown, the shock absorber 14 is fixed to the receiving seat 12 near the bottom. The shock absorber 14 is in an arc shape that fits the second ball head 22. A plurality of oil guide grooves 141 are provided at the location where the shock absorber 14 fits the second ball head 22. The shock absorber 14 reduces the possibility of the second ball head 22 breaking during driving. At the same time, lubricating oil is added to the oil guide grooves 141, which can reduce the friction of the second ball head 22 on the running-in surface, extend the service life of the second ball head 22 and increase the rotation sensitivity of the second ball head 22.

[0044] like Figure 5 As shown, the first ball head 21 includes a press-fit head 211 and a connecting column 212. The connecting column 212 is fixed to one side of the swing arm 2 by bolts. The press-fit head 211 is positioned and rotatably installed on the top of the connecting column 212. The positioning column 2111 is perpendicular to the press-fit head 211. A positioning hole 2112 is also vertically opened on the positioning column 2111. The press-fit head 211 with the positioning column 2111 can be positioned during press-fitting. The positioning hole 2112 is used to fix the first ball head 21 and other components connected to the first ball head 21, and at the same time, the first ball head 21 can accept the deflection caused by non-planar installation within a certain range during installation.

[0045] The working principle and use method of the vehicle height sensor are as follows: first, the chip 152, the pin 153 and the circuit board 151 are welded and then placed in the cavity 15, the magnetic ring 222 is inserted into the second ball head 22 and then inserted into the shaft hole 121, the seal 13 is in contact with the side wall of the second ball head 22, the shock absorber 14 is in contact with the bottom of the second ball head 22, the oil guide groove 141 is filled with lubricating oil, the first ball head 21 is press-fitted and connected with other swing parts, and the connector 3 is fixed with other parts. After the entire vehicle height sensor is installed, the swing arm 2 changes in real time with the vehicle height, the magnetic ring 222 rotates accordingly according to the swing of the swing arm 2, and the chip 152 corresponding to the magnetic ring 222 inputs a control signal for adjusting the vehicle light height according to the changing magnetic field strength of the magnetic ring 222, adjusts the vehicle light height, and thus controls the vehicle light height in real time.

[0046] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A vehicle height sensor, characterized in that: include: A body (1), a socket (11) is provided on one side of the body (1), a receiving seat (12) is vertically extended from the top of the body (1), the receiving seat (12) is clamped with the swing arm (2), a sealing member (13) is provided on the top of the receiving seat (12), a shock absorbing member (14) is also provided inside the receiving seat (12), and a connecting member (3) is also provided on the body (1); A swing arm (2), wherein a first ball head (21) and a second ball head (22) are vertically arranged on the swing arm (2), wherein the first ball head (21) is vertically fixed to the swing arm (2) by means of bolts, and the second ball head (22) is integrally arranged with the swing arm (2), and the second ball head (22) is clamped in a receiving seat (12); A connecting piece (3), the connecting piece (3) is arranged on a side of the main body (1) away from the socket (11), the connecting piece (3) is L-shaped, the horizontal section of the connecting piece (3) is fixed to the main body (1) by screws, and the vertical section of the connecting piece (3) is provided with a connecting hole (31).

2. A vehicle height sensor according to claim 1, characterized in that: The receiving seat (12) is provided with an axial hole (121) for accommodating the second ball head (22) along the axial direction, and a communicating cavity (15) is provided at the bottom of the axial hole (121), a circuit board (151) is provided in the cavity (15), a chip (152) is welded on the top of the circuit board (151), and a plug pin (153) is also provided on the circuit board (151), and the plug pin (153) extends to the socket (11).

3. A vehicle height sensor according to claim 2, characterized in that: A stepped groove (122) is provided at the top of the receiving seat (12) along the inner peripheral wall, and an annular seat (221) is extended from the second ball head (22) corresponding to the stepped groove (122), and the diameter of the annular seat (221) is larger than the diameter of the second ball head (22).

4. A vehicle height sensor according to claim 3, characterized in that: An accommodating groove (123) is extended from the stepped groove (122), a sealing member (13) is arranged in the accommodating groove (123), and the longitudinal section of the sealing member (13) is in an I-shape.

5. A vehicle height sensor according to claim 4, characterized in that: The shock absorbing member (14) is fixed in the receiving seat (12). The shock absorbing member (14) is in an arc shape that fits the second ball head (22). An oil guide groove (141) is also provided at the location where the shock absorbing member (14) fits the second ball head (22).

6. A vehicle height sensor according to claim 5, characterized in that: A magnetic ring (222) is rotatably mounted on the bottom of the second ball head (22), the magnetic ring being arranged opposite to the chip (152), and an axial groove (223) for accommodating the magnetic ring (222) is provided on the bottom of the second ball head (22).

7. The vehicle height sensor according to claim 1, characterized in that: The swing arm (2) is provided with reinforcing ribs (23), the reinforcing ribs (23) comprising cross-arranged main ribs (231) and auxiliary ribs (232) fixed inside the main ribs (231), the height of the auxiliary ribs (232) being lower than the height of the main ribs (231).

8. The vehicle height sensor according to claim 1, characterized in that: The first ball head (21) comprises a press-fitting head (211) and a connecting column (212); the connecting column (212) is fixed to the swing arm (2) by means of bolts; the press-fitting head (211) is rotatably mounted on the top of the connecting column (212); a positioning column (2111) is vertically extended from the press-fitting head (211); and a positioning hole (2112) is vertically opened on the positioning column (2111).

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