Air suspension vehicle height sensor assembly and vehicle height control method

Abstract

The present invention relates to the technical field of vehicle suspension, specifically to an air suspension vehicle height sensor assembly and a vehicle height control method, comprising a height sensor, an interface is provided at the lower end of the height sensor, the interface is connected to a signal sensing assembly in the height sensor, a swing arm is rotatably installed at the rear side of the height sensor, a connecting rod is rotatably installed at the rear end of the swing arm, a movable block is installed in the upper end of the connecting rod, a fixed assembly is provided on the left side of the height sensor, an anti-rollover assembly is provided at the rear side of the fixed assembly, and the anti-rollover assembly and the connecting rod are in the same plane. The present invention connects the height sensor to the car through the interface, and the swing arm and the connecting rod at the rear side of the height sensor are connected to the car suspension, the height sensor is fitted to the car through the side plate and the fixed plate, and the fixed plate is fixed to the instrument suspension using three sets of screws, so as to facilitate the fixed installation of the height sensor, and has a simple structure, convenient installation and simple operation.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle suspension, and in particular to an air suspension vehicle height sensor component and a vehicle height control method. Background Art

[0002] With the improvement of people's living standards and the rapid development of automobile technology, automobiles, as an important means of transportation, can meet people's various travel requirements. The air suspension has the characteristics of "S"-shaped nonlinear stiffness, low natural frequency and active height control, which can greatly improve the comprehensive performance of the vehicle. Therefore, the design, research and application development of air suspension has become a hot issue in the industry. Compared with traditional suspension, the height of the air suspension body is achieved by controlling the working state of the inflation and deflation solenoid valves to reduce or increase the amount of gas in the air spring, and then coordinately control the height of the four air suspensions, namely the front, rear, left and right, so that the chassis has a suitable height and a small roll angle and pitch angle. Whether the suspension height can be accurately detected will directly determine the comprehensive performance of the vehicle. The existing body height sensor has a relatively complex structure and involves many parts. In the actual production and assembly process, the assembly operation is very cumbersome and prone to failure problems. Various tooling is often required to position the various parts, and sometimes manual assisted positioning is required. This also makes its assembly quality and assembly efficiency urgently need to be improved. The connecting rod of the body height sensor is prone to flipping when it moves to the extreme position. For this reason, we propose an air suspension body height sensor component and a body height control method to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide an air suspension vehicle height sensor assembly and a vehicle height control method to solve the problem that the vehicle height sensor assembly operation proposed in the above background technology is very cumbersome and prone to failure, and various tooling is often required to position the various components, and sometimes manual assistance is required for the positioning work, which also makes its assembly quality and assembly efficiency urgently need to be improved.

[0004] To achieve the above object, the present invention provides the following technical solution: an air suspension vehicle height sensor assembly, comprising a height sensor,

[0005] The lower end of the height sensor is provided with an interface, and the interface is connected to the signal sensing component in the height sensor. A swing arm is rotatably installed on the rear side of the height sensor, and a connecting rod is rotatably installed on the rear end of the swing arm. A movable block is installed in the upper end of the connecting rod. A fixed component is provided on the left side of the height sensor, and the fixed component includes a side plate and a fixed plate. The side plate is movably installed on the left side of the height sensor, and the fixed plate is fixedly installed on the upper side of the side plate. Two groups of card slots are opened in the right end of the side plate. Two groups of card blocks are fixedly installed on the left end of the height sensor, and the two groups of card blocks are movably inserted into the The two groups of card slots are arranged, and a positioning plate is movably installed on the upper side of the fixed plate and the upper side of the height sensor. Three groups of threaded holes are opened on the left end of the positioning plate and the fixed plate. Screws are inserted in the three groups of threaded holes. An anti-rollover assembly is arranged on the rear side of the fixed assembly. The anti-rollover assembly includes a limiting plate, and the limiting plate is fixedly installed on the rear side of the fixed plate. Four groups of movable rods are movably installed on the limiting plate. Anti-pressure plates are fixedly installed on the upper ends of the four groups of movable rods. Four groups of springs are arranged between the anti-pressure plate and the upper side of the limiting plate. The four groups of springs are sleeved on the upper ends of the four groups of movable rods. The anti-rollover assembly and the connecting rod are in the same plane.

[0006] Preferably, the three groups of threaded holes and the three groups of screws are arranged in a triangle shape, and the three groups of screws are located on the left side of the height sensor.

[0007] Preferably, the upper side of the fixing plate is flush with the upper side of the height sensor, and the left end of the positioning plate is in contact with the upper side of the height sensor.

[0008] Preferably, the side plates, the fixing plates and the limiting plates are integrally die-cast and are made of stainless steel.

[0009] Preferably, a protective pad is glued to the upper side of the anti-pressure plate, the upper surface of the protective pad is wrapped with rubber material, and the lower side of the protective pad is filled with sponge material.

[0010] Preferably, a pressure sensor is fixedly installed in the limit plate, the upper side of the pressure sensor is higher than the upper side of the limit plate, and the pressure sensor is connected to a signal sensing component in the height sensor.

[0011] Preferably, a method for controlling the height of an air suspension vehicle body is provided, wherein a height sensor is connected to a vehicle chassis suspension through an interface; during driving of the vehicle, a swing arm is driven to swing through a connecting rod; the swing arm swings through a rotating connection with the height sensor so that a signal sensing component in the height sensor receives the height of the vehicle suspension and the ground for detection; the signal sensing component in the height sensor outputs a signal of the detected height to a vehicle control system; the vehicle control system outputs a pulse width instruction to control the vehicle suspension, thereby controlling the height of the vehicle body.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention connects the height sensor to the car through an interface, and the swing arm and the connecting rod at the rear side of the height sensor are connected to the car suspension, the height sensor is fitted to the car through the side plate and the fixing plate, and the fixing plate is fixed to the instrument suspension using three sets of screws, which is convenient for fixing and installing the height sensor, has a simple structure, is easy to install and operate, reduces the complexity of installing the height sensor, and improves the installation tightness of the height sensor.

[0014] 2. When the connecting rod drives the swing arm to swing, when the swing angle of the connecting rod reaches a certain degree, the four sets of movable rods and anti-pressure plates installed on the limit plate are used to resist the swing of the connecting rod to a certain angle, so as to avoid the connecting rod from swinging too much and thus flipping over, thereby improving the limit control effect of the swing angle of the connecting rod and avoiding the connecting rod from flipping over on the swing arm. In addition, the structure is simple, easy to implement and has the advantages of low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] FIG1 is a schematic front view of the structure of the present invention;

[0017] FIG. 2 is a schematic diagram of the structure of the present invention in a front view.

[0018] FIG3 is a schematic front view of the structure of the fixing assembly in the present invention; FIG4 is a schematic bottom view of the structure of the present invention;

[0019] FIG5 is a schematic diagram of a left sectional view of the structure of the present invention; FIG6 is a schematic diagram of a rear view of the structure of the present invention;

[0020] FIG. 7 is a partial enlarged schematic diagram of A in FIG. 5 of the present invention; FIG. 8 is a partial enlarged schematic diagram of B in FIG. 5 of the present invention.

[0021] In the figure: 1. height sensor; 2. interface; 3. swing arm; 4. connecting rod; 5. movable block; 6. side plate; 7. fixing plate; 8. slot; 9. clamping block; 10. positioning plate; 11. threaded hole; 12. screw; 13. limit plate; 14. movable rod; 15. anti-pressure plate; 16. spring; 17. protective pad; 18. pressure sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to Figures 1-8, an embodiment of the present invention provides: an air suspension vehicle height sensor assembly, including a height sensor 1,

[0024] An interface 2 is provided at the lower end of the height sensor 1, and the interface 2 is connected to the signal sensing component in the height sensor 1. A swing arm 3 is rotatably installed on the rear side of the height sensor 1, and a connecting rod 4 is rotatably installed on the rear end of the swing arm 3. A movable block 5 is installed in the upper end of the connecting rod 4. A fixed component is provided on the left side of the height sensor 1, and the fixed component includes a side plate 6 and a fixed plate 7. The side plate 6 is movably installed on the left side of the height sensor 1, and the fixed plate 7 is fixedly installed on the upper side of the side plate 6. Two groups of card slots 8 are opened in the right end of the side plate 6. Two groups of card blocks 9 are fixedly installed on the left end of the height sensor 1, and the two groups of card blocks 9 are movably inserted in the two groups of card slots 8. A positioning plate 10 is movably installed on the upper side of the fixed plate 7 and the upper side of the height sensor 1. Three groups of threaded holes 11 are opened on the left end of the positioning plate 10 and the fixed plate 7, and screws 12 are inserted in the three groups of threaded holes 11. An anti-flip component is provided on the rear side of the fixed component, and the anti-flip component includes a limit plate 13. The limit plate 13 It is fixedly installed on the rear side of the fixed plate 7, and four groups of movable rods 14 are movably installed on the limit plate 13. The upper ends of the four groups of movable rods 14 are fixedly installed with anti-pressure plates 15. Four groups of springs 16 are arranged between the anti-pressure plates 15 and the upper sides of the limit plate 13. The four groups of springs 16 are sleeved on the upper ends of the four groups of movable rods 14. The anti-rollover component and the connecting rod 4 are in the same plane. The device connects the height sensor 1 and the connecting rod 4 to the automobile control system and the automobile suspension through the interface 2 and the movable block 5 respectively. The swing arm 3 is driven to swing through the connecting rod 4 during the driving process of the automobile, and the swing amplitude of the swing arm 3 and the connecting rod 4 is detected by the signal sensing component in the height sensor 1 to output the signal to the automobile control system, and the automobile suspension is controlled by the automobile control system, so as to achieve the control of the height of the automobile body. When the height sensor 1 and the connecting rod 4 are connected to the automobile control system and the automobile suspension through the interface 2 and the movable block 5 respectively, the side plate 6 is sleeved on the two groups of blocks 9 on the left side of the height sensor 1 through the two groups of card slots 8 on the right side. On the vehicle, the positioning plate 10 is attached to the fixing plate 7 and the upper side of the height sensor 1, and then the fixing plate 7 is fixed to the vehicle suspension using three sets of screws 12. The height sensor 1 is fixed to the vehicle suspension after being connected to the side plate 6 through two sets of blocks 9, thereby improving the installation fastness of the height sensor 1 and reducing the support reinforcement required for the height sensor 1. The height sensor 1 is fixed to the vehicle together, and then the limit plate 13 is connected to the fixing plate 7 and the side plate 6. When the connecting rod 4 drives the swing arm 3 to swing, the connecting rod 4 swings and fits the anti-pressure plate 15.The anti-pressure plate 15 is subjected to the swinging and squeezing of the connecting rod 4, and the force generated by the squeezing of the anti-pressure plate 15 is reduced and buffered by four sets of springs 16, thereby reducing the squeezing force of the anti-pressure plate 15, avoiding deformation caused by direct contact and squeezing of the connecting rod 4 and the anti-pressure plate 15, and according to the positional relationship between the anti-pressure plate 15 and the limiting plate 13, when the swing arm 3 is driven by the connecting rod 4 to swing too much, the limiting plate 13 and the anti-pressure plate 15 block the connecting rod 4, avoiding the swinging angle of the connecting rod 4 to be too large and flipping, and limiting the swinging angle of the connecting rod 4.

[0025] Furthermore, the three groups of threaded holes 11 and the three groups of screws 12 are arranged in a triangular shape, and the three groups of screws 12 are located on the left side of the height sensor 1. According to the opening and installation position relationship of the three groups of threaded holes 11 and the three groups of screws 12, when the three groups of screws 12 are inserted into the three groups of threaded holes 11 and fixedly connected to the vehicle, the tightness of the connection between the fixing plate 7 and the vehicle is improved, so that the fixing plate 7 will not move left and right after being fixed by the three groups of screws 12.

[0026] Further, the upper side of the fixing plate 7 is flush with the upper side of the height sensor 1, and the left end of the positioning plate 10 is fitted with the upper side of the height sensor 1. According to the positional relationship between the upper side of the fixing plate 7 and the upper side of the height sensor 1, after the fixing plate 7 is fitted and connected with the left end of the height sensor 1 through the side plate 6, the upper side of the fixing plate 7 is kept flush with the upper side of the height sensor 1, and then the left and right ends of the threaded hole 11 are tightly fitted with the upper side of the fixing plate 7 and the upper side of the height sensor 1, respectively, so that the height sensor 1 can be fastened and connected to the height sensor 1 at a position where the car can be installed on the fixing plate 7 but cannot abut against the upper side of the height sensor 1.

[0027] The height sensor 1 is tightly connected and fixed to the swing arm 3 and the fixing plate 7 .

[0028] Furthermore, the side panel 6, the fixing plate 7 and the limiting plate 13 are integrally die-cast, and the side panel 6, the fixing plate 7 and the limiting plate 13 are made of stainless steel. The structure is integrally formed according to the production of the side panel 6, the fixing plate 7 and the limiting plate 13 to avoid the side panel 6, the fixing plate 7 and the limiting plate 13 from being broken and separated due to long-term use, and the height sensor 1 is installed at the position of the automobile chassis according to the side panel 6, the fixing plate 7 and the limiting plate 13, so that the side panel 6, the fixing plate 7 and the limiting plate 13 are contaminated by moisture for a long time to avoid rust.

[0029] Furthermore, a protective pad 17 is glued to the upper side of the anti-pressure plate 15, and the upper surface of the protective pad 17 is wrapped with rubber material, and the lower side of the protective pad 17 is filled with sponge material. This structure is glued to the upper side of the anti-pressure plate 15 by the protective pad 17, and according to the composition material of the protective pad 17, it is avoided that when the anti-pressure plate 15 blocks the connecting rod 4, the connecting rod 4 applies force to the surface of the anti-pressure plate 15 to insert a certain indentation or surface deformation, thereby improving the protection effect of the surface of the anti-pressure plate 15 and the protective pad 17 has a certain rebound effect. The production cost of the protective pad 17 is low and the replacement is convenient.

[0030] Furthermore, a pressure sensor 18 is fixedly installed in the limit plate 13, and the upper side of the pressure sensor 18 is higher than the upper side of the limit plate 13. The pressure sensor 18 is connected to the signal sensing component in the height sensor 1. The structure is installed on the limit plate 13 through the pressure sensor 18. When the connecting rod 4 swings to squeeze the anti-pressure plate 15, the anti-pressure plate 15 fits the upper side of the pressure sensor 18, and the anti-pressure plate 15 is squeezed by the connecting rod 4 to apply force to the upper end of the pressure sensor 18. The pressure sensor 18 is subjected to the squeezing force and outputs it to the signal sensing component in the height sensor 1, and is transmitted to the vehicle control system through the signal sensing component, so that the vehicle control system can reset the reverse swing of the connecting rod 4.

[0031] Furthermore, a method for controlling the height of an air suspension vehicle body is provided, wherein the height sensor 1 is connected to the vehicle chassis suspension through the interface 2. During the driving of the vehicle, the swing arm 3 is driven to swing through the connecting rod 4. The swing arm 3 swings through the rotating connection with the height sensor 1 so that the signal sensing component in the height sensor 1 receives the height of the vehicle suspension and the ground for detection, and the signal sensing component in the height sensor 1 outputs the detected height through the signal to the vehicle control system. The vehicle control system outputs a pulse width instruction to control the vehicle suspension, and the vehicle body height can be controlled. The structure detects the height of the vehicle body and the ground during the driving process through the height sensor 1, the interface 2, the swing arm 3 and the connecting rod 4, and is connected to the vehicle control system signal through the signal sensing component in the height sensor 1, so that the vehicle control system controls the vehicle suspension to increase or decrease, thereby achieving control of the vehicle body height.

[0032] Working principle: When installing the height sensor 1, as shown in Figures 2, 4 and 5, first connect the height sensor 1 to the vehicle control system through the interface 2, and insert the height sensor 1 into the two groups of card slots 8 on the right side of the side plate 6 through the two groups of card blocks 9 on the left, then fit the positioning plate 10 with the upper side of the fixing plate 7 and the upper side of the height sensor 1, the positioning plate 10 keeps the upper side of the fixing plate 7 and the upper side of the height sensor 1 flush, and the two groups of card slots 8 on the right side of the side plate 6 are blocked by the positioning plate 10, then fit the upper side of the fixing plate 7 and the left end of the height sensor 1 with the vehicle suspension, and insert three groups of screws 12 into the three groups of threaded holes 11, and twist the three groups of screws 12 to insert them into the vehicle suspension, so that the fixing plate 7 and the positioning plate 10 are fixedly connected to the vehicle suspension, and the height sensor 1 can be fixed, and the swing arm 3 and the connecting rod 4 on the rear side of the height sensor 1 are connected to the vehicle rotation. When the car is driving on different roads, the connecting rod 4 The swing arm 3 is driven to swing, and the swing arm 3 rotates to generate a signal to the signal sensing component in the height sensor 1, and then the signal is output to the vehicle control system through the signal sensing component in the height sensor 1, and the vehicle suspension is controlled to rise through the vehicle control system to achieve the control of the vehicle body height. When the connecting rod 4 swings, Figure 4 As shown in FIG6 , when the connecting rod 4 swings to a certain amplitude, it fits with the upper side of the anti-pressure plate 15, and the connecting rod 4 presses the anti-pressure plate 15 downward, and the anti-pressure plate 15 is squeezed to drive the four groups of movable rods 14 to move in the limit plate 13, and the anti-pressure plate 15 drives the four groups of movable rods 14 to move while squeezing the four groups of springs 16, and the limit plate 13 and the anti-pressure plate 15 are used to block the swing of the connecting rod 4 to avoid the overturning caused by the excessive swing amplitude of the connecting rod 4, and when the anti-pressure plate 15 is squeezed to move and fit close to the upper side of the limit plate 13, the anti-pressure plate 15 squeezes the upper end of the pressure sensor 18, and the pressure sensor 18 detects the pressure, and then the output signal of the pressure sensor 18 is output to the vehicle control system through the signal sensing component in the height sensor 1, and the connecting rod 4 is reversely swung and reset through the vehicle control system. The above is the entire working principle of the present invention.

[0033] In the description of the present application, it should be understood that the terms "front", "rear", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An air suspension vehicle height sensor assembly, comprising a height sensor (1), characterized in that: The height sensor (1) is provided with an interface (2) at the lower end thereof, the interface (2) being connected to a signal sensing component in the height sensor (1); a swing arm (3) is rotatably mounted on the rear side of the height sensor (1); a connecting rod (4) is rotatably mounted on the rear end of the swing arm (3); a movable block (5) is mounted in the upper end of the connecting rod (4); a fixed component is provided on the left side of the height sensor (1); the fixed component comprises a side plate (6) and a fixed plate (7); the side plate (6) is movably mounted on the left side of the height sensor (1); the fixed plate (7) is fixedly mounted on the upper side of the side plate (6); two groups of card slots (8) are provided in the right end of the side plate (6); two groups of card blocks (9) are fixedly mounted on the left end of the height sensor (1); the two groups of card blocks (9) are movably inserted in the two groups of card slots (8); a positioning plate (10) is movably mounted on the upper side of the fixing plate (7) and the upper side of the height sensor (1); the positioning plate (10) Three groups of threaded holes (11) are provided on the left end and the fixed plate (7), and screws (12) are inserted into the three groups of threaded holes (11). An anti-flip assembly is provided on the rear side of the fixed assembly, and the anti-flip assembly includes a limit plate (13), and the limit plate (13) is fixedly installed on the rear side of the fixed plate (7). Four groups of movable rods (14) are movably installed on the limit plate (13), and anti-pressure plates (15) are fixedly installed on the upper ends of the four groups of movable rods (14). Four groups of springs (16) are provided between the anti-pressure plates (15) and the upper sides of the limit plates (13), and the four groups of springs (16) are sleeved on the upper ends of the four groups of movable rods (14). The anti-flip assembly and the connecting rod (4) are in the same plane.

2. The air suspension vehicle height sensor assembly according to claim 1, characterized in that: The three groups of threaded holes (11) and the three groups of screws (12) are arranged in a triangular shape, and the three groups of screws (12) are located on the left side of the height sensor (1).

3. The air suspension vehicle height sensor assembly according to claim 1, characterized in that: The upper side of the fixing plate (7) is flush with the upper side of the height sensor (1), and the left end of the positioning plate (10) is in contact with the upper side of the height sensor (1).

4. The air suspension vehicle height sensor assembly according to claim 1, characterized in that: The side plate (6), the fixing plate (7) and the limiting plate (13) are integrally die-cast, and the side plate (6), the fixing plate (7) and the limiting plate (13) are made of stainless steel.

5. The air suspension vehicle height sensor assembly according to claim 1, characterized in that: A protective pad (17) is glued to the upper side of the anti-pressure plate (15); the upper surface of the protective pad (17) is wrapped with a rubber material, and the lower side of the protective pad (17) is filled with a sponge material.

6. The air suspension vehicle height sensor assembly according to claim 1, characterized in that: A pressure sensor (18) is fixedly installed in the limit plate (13), the upper side of the pressure sensor (18) is higher than the upper side of the limit plate (13), and the pressure sensor (18) is connected to a signal sensing component in the height sensor (1).

7. A control method for an air suspension vehicle height sensor assembly according to any one of claims 1 to 6, characterized in that: The height sensor (1) is connected to the chassis suspension of the automobile through the interface (2). During the driving of the automobile, the swing arm (3) is driven to swing through the connecting rod (4). The swing arm (3) swings through the rotation connection with the height sensor (1) so that the signal sensing component in the height sensor (1) receives the height between the automobile suspension and the ground to detect the height. The signal sensing component in the height sensor (1) outputs the detected height through a signal to the automobile control system. The automobile control system outputs a pulse width instruction to control the automobile suspension, thereby controlling the height of the automobile body.

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