Height sensor and its rotating structure

Abstract

The utility model provides a kind of height sensor and its rotating structure, including shell and swing bar;Shell is formed with the first cavity of upward opening, and the first cavity includes spherical inverted structure;The first end of swing bar is pivot portion, and pivot portion has the spherical segment corresponding with spherical inverted structure, and the second end of swing bar is used to connect to vehicle body;The diameter of the spherical segment of pivot portion is greater than the size of the opening of the first cavity;Pivot portion is pressed into fit in the first cavity from the opening of the first cavity, and pivot portion is rotatable relative to shell;The bottom of pivot portion is provided with magnet.Structure is simple, process flow is simple, reduce production cost, and pivot is not easy to come out of shell.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive electronics, and in particular to a height sensor and its rotating structure. Background Technology

[0002] In modern automotive electronic control systems, the vehicle height sensor is a key component for realizing functions such as air suspension systems, Electronic Stability Program (ESP), and automatic headlight adjustment. Its main function is to monitor the relative height changes between the vehicle chassis and wheels in real time, and convert this information into electrical signals to feed back to the control unit. This allows for precise adjustments to suspension stiffness, damping, or vehicle attitude, thereby improving the vehicle's ride comfort, handling stability, and safety.

[0003] Most mainstream height sensors on the market currently employ a rotating lever structure to sense changes in height. This structure typically includes a lever that rotates around a pivot, and the angle of rotation of the lever reflects changes in vehicle height. However, in existing technologies, to prevent the pivot from detaching from the height sensor housing under long-term vibration and impact conditions, current products generally use multiple independent components or a combination of various processing techniques for fixation, resulting in complex processes and high costs. Achieving both smooth pivot rotation and effective internal waterproofing and dustproofing has always been a technical challenge. Utility Model Content

[0004] Based on the above problems, this utility model provides a height sensor and its rotating structure, aiming to solve the technical problems in the prior art such as the easy detachment of the swing arm shaft and the complex manufacturing process.

[0005] A height sensor rotating structure includes a housing and a lever;

[0006] The shell has an upwardly opening first cavity, which includes a spherical inverted structure;

[0007] The first end of the swing arm is a pivot section, which has a spherical segment corresponding to the spherical inverted structure. The second end of the swing arm is used to connect to the vehicle body.

[0008] The diameter of the spherical section of the rotating shaft is larger than the size of the opening of the first cavity;

[0009] The rotating shaft is pressed into the first cavity from the opening of the first cavity and fits into the first cavity. The rotating shaft is rotatable relative to the housing.

[0010] A magnet is installed at the bottom of the rotating shaft.

[0011] Furthermore, the rotating shaft is divided into an upper section, a middle section, and a lower section from top to bottom. The middle section of the rotating shaft is a spherical section, while the upper and lower sections are cylindrical sections, and the magnet is fixed in the cylindrical section.

[0012] The first cavity also includes: a cylindrical cavity that mates with the upper section of the rotating shaft and a cylindrical cavity section that mates with the lower section of the rotating shaft;

[0013] The diameter of the spherical section of the rotating shaft is larger than the diameter of the opening of the first cavity.

[0014] Furthermore, the upper section of the rotating shaft is provided with an annular groove, and a sealing ring is fitted into the annular groove.

[0015] Furthermore, the lower section of the rotating shaft includes a first cylindrical section and a second cylindrical section, with the first cylindrical section located between the spherical section and the second cylindrical section, and the diameter of the first cylindrical section being larger than the diameter of the second cylindrical section;

[0016] The first cavity includes: a first cylindrical cavity segment that mates with the first cylindrical segment and a second cylindrical cavity segment that mates with the second cylindrical segment;

[0017] The diameter of the first cylindrical cavity segment is larger than the diameter of the second cylindrical cavity segment to form a step at the junction of the first and second cylindrical segments, and the diameter of the second cylindrical cavity segment is smaller than the diameter of the first cylindrical segment.

[0018] Furthermore, a reduction cavity is opened at the upper end of the rotating shaft.

[0019] Furthermore, the spherical section of the rotating shaft is provided with multiple small oil storage holes.

[0020] The magnet is a magnetic steel, which can be a ring-shaped magnet, a bar magnet, or a cylindrical magnet.

[0021] Furthermore, the second end of the lever is a connecting ball joint for connection with the vehicle body.

[0022] Furthermore, several reduction openings are provided on the connecting arm between the first end and the second end of the swing arm.

[0023] A height sensor having a Hall sensor chip and a circuit board, including the aforementioned height sensor rotating structure, wherein the housing further forms a partition portion and a downwardly opening second cavity;

[0024] The partition separates the first cavity and the second cavity vertically. A circuit board is fixed inside the second cavity, and a Hall sensor chip is fixed on the circuit board.

[0025] The Hall sensor chip is positioned vertically and vertically in correspondence with the magnet.

[0026] The beneficial technical effects of this utility model are as follows: This utility model forms a cavity with a spherical inverted structure through the shell, and the fixed end of the swing rod forms a spherical segment. The spherical inverted structure and the spherical segment cooperate. During assembly, it is only necessary to press the rotating shaft of the swing rod into the cavity. The structure is simple, the process is simple, the production cost is reduced, and the rotating shaft is not easy to come out of the shell. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of a height sensor according to the present invention;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of the pendulum rod of a height sensor according to the present invention;

[0029] Figure 3 This is an exploded view of the height sensor of this utility model;

[0030] Figure 4 This is a bottom-view schematic diagram of a height sensor according to the present invention;

[0031] Figure 5 This is a top view schematic diagram of a height sensor according to the present invention;

[0032] Figure 6 This is a schematic diagram illustrating the connection between a height sensor and a vehicle body according to this utility model.

[0033] Wherein: 1-Housing; 2-Swing rod; 3-Rotating shaft; 4-First cavity; 5-Magnet; 6-Annular groove; 7-Sealing ring; 8-Second cavity; 9-Partition plate; 10-Connecting pin; 11-Connecting slot; 12-Circuit board; 13-Hall sensor chip; 14-Reduction chamber; 15-Connecting ball head; 16-Potting glue; 17-Positioning pin; 18-Oil reservoir hole; 19-Reduction hole; 20-Connecting rod; 21-Body control arm; 22-Connecting rod bracket; 23-Subframe; 24-Sensor bracket. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0037] See Figure 1 and Figure 2 This utility model provides a height sensor rotating structure, including a housing 1 and a swing arm 2;

[0038] The shell has an upwardly opening first cavity 4, which includes a spherical inverted structure;

[0039] The first end of the swing arm 2 is a pivot part 3, which has a spherical segment corresponding to the spherical inverted structure. The second end of the swing arm 2 is used to connect to the vehicle body.

[0040] The diameter of the spherical section of the rotating shaft 3 is larger than the size of the opening of the first cavity 4;

[0041] The rotating shaft 3 is pressed into the first cavity 4 from the opening of the first cavity 4 and is rotatable relative to the housing 1;

[0042] A magnet 5 is provided at the bottom of the rotating shaft 3.

[0043] Specifically, the shell of this utility model is integrally injection molded.

[0044] This invention forms a cavity with a spherical inverted structure through a shell, and the fixed end of the swing rod forms a spherical segment. The spherical inverted structure and the spherical segment cooperate. During assembly, it is only necessary to press the rotating shaft of the swing rod into the cavity. The structure is simple, the process is simple, the production cost is reduced, and the rotating shaft is not easy to come out of the shell.

[0045] Furthermore, the rotating shaft 3 is divided into an upper section, a middle section and a lower section from top to bottom. The middle section of the rotating shaft 3 is a spherical section, and the upper and lower sections of the rotating shaft 3 are cylindrical sections. The magnet 5 is fixed in the cylindrical section.

[0046] The first cavity 4 also includes: a cylindrical cavity that mates with the upper section of the rotating shaft 3, and a cylindrical cavity section that mates with the lower section of the rotating shaft 3;

[0047] The diameter of the spherical section of the rotating shaft 3 is larger than the diameter of the opening of the first cavity 4.

[0048] Specifically, the rotating shaft 3 and the first cavity 4 share a common central axis.

[0049] Furthermore, the upper section of the rotating shaft 3 is provided with an annular groove 6, and a sealing ring 7 is fitted into the annular groove 6.

[0050] The design of the annular groove 6 defines the position of the sealing ring, which serves a waterproof function.

[0051] Furthermore, the lower section of the rotating shaft 3 includes a first cylindrical section and a second cylindrical section, the first cylindrical section being located between the spherical section and the second cylindrical section, and the diameter of the first cylindrical section being larger than the diameter of the second cylindrical section;

[0052] The first cavity includes: a first cylindrical cavity segment that mates with the first cylindrical segment and a second cylindrical cavity segment that mates with the second cylindrical segment;

[0053] The diameter of the first cylindrical cavity segment is larger than the diameter of the second cylindrical cavity segment to form a step at the junction of the first and second cylindrical segments, and the diameter of the second cylindrical cavity segment is smaller than the diameter of the first cylindrical segment.

[0054] The step provides some support to the rotating shaft 3, preventing the lower end face of the rotating shaft 3 from contacting the bottom surface of the first cavity 4 of the housing 1. This facilitates the rotation of the rotating shaft 3 while reducing wear and friction on the bottom surface of the rotating shaft 3, thus preventing the rotation of the swing arm from being affected by friction and thus affecting the measurement accuracy of the height sensor.

[0055] Furthermore, a reduction cavity 14 is provided at the upper end of the rotating shaft 3.

[0056] The design of the reduction cavity 14 can reduce the weight of the rotating shaft 3, making it easier to rotate, and also save on the material of the swing arm.

[0057] like Figure 3 As shown, the spherical section of the rotating shaft 3 is further provided with multiple oil storage holes 18.

[0058] The oil storage hole 18 stores lubricating oil and serves to lubricate the rotating shaft 3.

[0059] Furthermore, magnet 5 is a magnetic steel, which can be a ring-shaped magnetic steel, a bar magnetic steel, or a cylindrical magnetic steel.

[0060] Furthermore, the second end of the lever 2 is a connecting ball joint 15 for connection with the vehicle body.

[0061] like Figure 6 As shown, the swing arm 2 is fixed to the subframe 23 via the sensor bracket 24. The connecting ball joint 15 of the swing arm 2 is connected to one end of the connecting rod 20, and one end of the connecting rod 20 is connected to the body control arm 21 via the connecting rod bracket 22. Changes in body height cause changes in the position of the body control arm, which in turn causes the rotating shaft 3 to rotate via the connecting rod and the swing arm. This causes the magnet to rotate, resulting in a change in the magnetic field passing through the Hall sensor chip, thereby enabling the detection of body height.

[0062] like Figure 5 As shown, further, a plurality of reduction openings 19 are provided on the connecting arm between the first end of the swing rod 2 and the second end of the swing rod 2.

[0063] The connecting arm of the ball head 15, the swing arm 2, and the pivot part 3 are integrally formed to form the swing arm 2.

[0064] The design of the reduced opening 19 can reduce the weight of the swing arm 2, making it easier to rotate, and also saves material on the swing arm 2.

[0065] like Figure 3 and Figure 4As shown, the present invention provides a height sensor having a Hall sensor chip 13 and a circuit board 12, characterized in that it includes a height sensor rotating structure as described above, and the housing 1 further forms a partition portion 9 and a downwardly opening second cavity 8.

[0066] The partition 9 separates the first cavity 4 and the second cavity 8 vertically. A circuit board 12 is fixed inside the second cavity 8, and a Hall sensor chip 13 is fixed on the circuit board 12.

[0067] The Hall sensor chip 13 is positioned vertically and vertically in correspondence with the magnet 5.

[0068] The housing 1 has a pre-embedded connecting pin 10 in the injection molding process, and the housing 1 also has a plug groove 11;

[0069] The first end of the connecting pin 10 is used for electrical connection with the Hall sensor chip 13;

[0070] The second end of the connecting pin 10 extends into the insertion slot 11.

[0071] As an embodiment of the present invention, the connection method between the connecting pin 10 and the Hall sensor chip 13 is not specifically limited. It can be that the first end of the connecting pin 10 is directly soldered to the pin of the Hall sensor chip 13, or the connecting pin 10 is plugged into the circuit board 12 and indirectly connected through the lines of the circuit board 12. As long as the electrical connection between the Hall sensor chip 13 and the connecting pin 10 can be achieved, it is acceptable.

[0072] As an embodiment of the present invention, the relative fixing method of the circuit board 12 and the housing 1 is not specifically limited in this utility model. The circuit board 12 can be positioned by setting a positioning pin 17 on the housing 1, and then the circuit board 12 can be fixed in the second cavity of the housing by potting glue 16 to improve the waterproof performance.

[0073] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A height sensor rotating structure, characterized in that, Includes the housing and the rocker arm; The housing has an upwardly opening first cavity, the first cavity including a spherical inverted structure; The first end of the swing arm is a pivot section, which has a spherical segment corresponding to the spherical inverted structure, and the second end of the swing arm is used to connect to the vehicle body; The diameter of the spherical section of the rotating shaft is larger than the size of the opening of the first cavity; The rotating shaft is pressed into the first cavity from the opening of the first cavity and is rotatable relative to the housing. A magnet is provided at the bottom of the rotating shaft.

2. The height sensor rotating structure as described in claim 1, characterized in that, The rotating shaft is divided into an upper section, a middle section and a lower section from top to bottom. The middle section of the rotating shaft is a spherical section, and the upper and lower sections are cylindrical sections. The magnet is fixed in the cylindrical section. The first cavity further includes: a cylindrical cavity that mates with the upper section of the rotating shaft and a cylindrical cavity section that mates with the lower section of the rotating shaft; The diameter of the spherical section of the rotating shaft is larger than the diameter of the opening of the first cavity.

3. The height sensor rotating structure as described in claim 2, characterized in that, The upper section of the rotating shaft is provided with an annular groove, and a sealing ring is fitted into the annular groove.

4. The height sensor rotating structure as described in claim 2, characterized in that, The lower section of the rotating shaft includes a first cylindrical section and a second cylindrical section, wherein the first cylindrical section is located between the spherical section and the second cylindrical section, and the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section. The first cavity includes: a first cylindrical cavity segment that mates with the first cylindrical segment and a second cylindrical cavity segment that mates with the second cylindrical segment; The diameter of the first cylindrical cavity segment is larger than the diameter of the second cylindrical cavity segment to form a step at the junction of the first and second cylindrical segments, and the diameter of the second cylindrical cavity segment is smaller than the diameter of the first cylindrical segment.

5. The height sensor rotating structure as described in claim 1, characterized in that, A reduction cavity is provided at the upper end of the rotating shaft.

6. The height sensor rotating structure as described in claim 1, characterized in that, The spherical section of the rotating shaft is provided with multiple small oil storage holes.

7. The height sensor rotating structure as described in claim 2, characterized in that, The magnet is the magnetic steel, which is a ring-shaped magnet, a bar magnet, or a cylindrical magnet.

8. The height sensor rotating structure as described in claim 2, characterized in that, The second end of the swing arm is a connecting ball joint for connection with the vehicle body.

9. The height sensor rotating structure as described in claim 2, characterized in that, The connecting arm between the first end and the second end of the swing rod has several reduction openings.

10. A height sensor comprising a Hall sensor chip and a circuit board, characterized in that, Including a height sensor rotating structure as described in any one of claims 1-9, the housing further forms a partition portion and a downwardly opening second cavity; The partition separates the first cavity and the second cavity vertically. The circuit board is fixed inside the second cavity, and the Hall sensor chip is fixed on the circuit board. The Hall sensor chip is positioned vertically opposite to the magnet.

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