Self-lubricating steering structure applied to hall sensor

Abstract

This utility model discloses a self-lubricating steering structure for a Hall sensor, comprising a housing, a steering component, a partition torsion spring, a bushing, a solid lubricant, and a retaining ring. The steering component has a steering part, an inner ring part, and an outer ring part distributed sequentially from the inside to the outside. The torsion spring is sleeved between the inner ring part and the outer ring part. A bushing is installed between the steering part and the housing, and a solid lubricant is provided on one side of the bushing. The steering part extends through the bushing into a sealing groove, and a retaining ring is connected to the outer end of the steering part. The main purpose of this utility model is that the housing, steering component, and partition are all integrally injection molded, resulting in a simple overall structure and convenient installation. Furthermore, the bushing with solid lubricant at the connection between the housing and the steering component ensures smooth steering without abnormal noise, maintains the detection accuracy of the Hall sensor, and improves the service life of the Hall sensor.

Description

Technical Field

[0001] This utility model relates to the technical field of Hall sensors, and in particular to a self-lubricating steering structure applied to Hall sensors. Background Technology

[0002] Hall effect sensors are widely used in automotive electronics to detect angular displacement or positional changes. They are commonly used in adaptive headlight systems or vehicle height adjustment systems. Their basic working principle is that an external action drives the steering component to rotate relative to the housing. The steering component drives a magnetic ring to rotate synchronously, thereby changing the relative magnetic field between the magnetic ring and the circuit board inside the housing. The Hall effect chip on the circuit board senses the change in the magnetic field and outputs a corresponding electrical signal, achieving accurate detection of the headlight steering angle or vehicle height position. However, in the steering structure of traditional Hall effect sensors, a metal bushing is usually embedded inside the housing. The steering component is rotatably connected to the housing through the metal bushing. Due to the lack of continuous and effective lubrication between plastic and metal, the surface of the steering component is prone to wear and debris after long-term use, leading to increased rotational clearance and unstable output signals. Utility Model Content

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: a self-lubricating steering structure for a Hall sensor, comprising a housing, a steering component, a partition, and a torsion spring. The housing is rotatably connected to the steering component, and the housing and the steering component are combined to form an upper mounting groove. The housing is connected to a partition, which divides the housing into a sealing groove for accommodating a magnetic ring and a lower mounting groove for accommodating a circuit board. The structure also includes a bushing, a solid lubricant, and a retaining ring disposed in the upper mounting groove. The steering component has a steering part, an inner ring part, and an outer ring part distributed sequentially from the inside to the outside. The torsion spring is sleeved between the inner ring part and the outer ring part. A bushing is installed between the steering part and the housing. A solid lubricant is disposed on one side of the bushing. The steering part extends through the bushing into the sealing groove, and a retaining ring is connected to the outer end of the steering part.

[0004] Using the above technical solution, the housing, steering component, and partition are all integrally injection molded, resulting in a simple overall structure and convenient installation. Furthermore, a bushing with solid lubricant is installed at the connection between the housing and the steering component, ensuring smooth steering without abnormal noise, maintaining the detection accuracy of the Hall sensor, and improving the service life of the Hall sensor.

[0005] The present invention is further configured such that the housing has an inner ring portion two and an outer ring portion two, the inner ring portion two is fitted outside the inner ring portion two, the turning portion and the inner ring portion two form a T-shaped annular groove with the same outer contour as the bushing, the bushing is disposed in the T-shaped annular groove, and a sealing ring is provided between the outer ring portion one and the outer ring portion two.

[0006] Using the above technical solution, the housing and steering component are combined to form an upper mounting groove. The inner side of the upper mounting groove is sealed by heat welding or adhesive partition, and the outer side is sealed by a sealing ring, so that the upper mounting groove forms a sealed cavity, preventing external impurities from entering the upper mounting groove and preventing the steering structure from being blocked.

[0007] The present invention is further configured such that the inner side of the second inner ring portion is provided with a stepped portion, the retaining spring abuts against the stepped portion through a flat washer, the outer side of the second inner ring portion is provided with a conical surface, and the first inner ring portion is provided with a conical surface corresponding to the first conical surface.

[0008] Using the above technical solution, the steering component and the housing are installed by self-centering fit between conical surface one and conical surface two. The upper and lower ends of the steering component are respectively limited by bushing and step portion to prevent the steering component from axially moving relative to the housing, ensuring that the distance between the magnetic ring and the circuit board remains unchanged, so as to make the signal output stable.

[0009] The present invention is further provided that one side of the bushing is provided with an opening groove for accommodating solid lubricant.

[0010] Furthermore, the opening grooves are spirally distributed on the side of the bushing.

[0011] By adopting the above technical solution, since the opening groove has a spiral structure, the total amount of solid lubricant can be increased while ensuring the strength of the bushing structure, and the lubrication area of ​​the steering component can be increased, thereby reducing the frictional resistance of the rotating structure.

[0012] The present invention is further configured such that the two ends of the torsion spring are provided with a vertically distributed torsion arm one and a torsion arm two, the steering component is provided with a slot for engaging the torsion arm one, and the housing is provided with symmetrically distributed inner holes for engaging the torsion arm two.

[0013] Using the above technical solution, the torsion spring is sleeved between the inner ring and the outer ring, and the two torsion arms of the torsion spring are respectively engaged in the slot and the inner hole. The housing has two sets of symmetrically distributed inner holes, and the torsion spring is installed in different inner holes to realize the left-hand or right-hand rotation reset of the steering component, thereby improving the versatility of the sensor.

[0014] The present invention is further configured such that the steering component has staggered mounting holes and arc-shaped grooves at one location on the inner ring.

[0015] Using the above technical solution, the steering component has three sets of mounting holes and arc-shaped grooves. The steering component is connected to the external connecting rod bracket through the mounting holes, so that the steering of the headlights or the vehicle height adjustment can be transmitted to the steering component. The arc-shaped grooves reduce the material used in the steering component, while making the wall thickness of the steering component uniform, providing a reasonable flow channel for the plastic melt, which is conducive to the injection molding of the steering component.

[0016] The present invention is further configured such that the housing has a cavity for sealing and connecting the partition, the partition has a circular groove for accommodating the steering component, a retaining ring for engaging the cavity, and a limiting post one for fixing the circuit board, and the housing has a limiting post two for fixing the circuit board.

[0017] Using the above technical solution, the partition is inserted into the cavity by a retaining ring and connected to the cavity by hot welding or gluing. The circuit board is provided with positioning holes corresponding to the first and second limiting posts. The precise positioning and installation of the circuit board is achieved through the first and second limiting posts, ensuring that the output signals of the sensors produced in batches are consistent.

[0018] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is an exploded view of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the casing of this utility model;

[0022] Figure 4 This is a perspective view of the casing of this utility model;

[0023] Figure 5 This is a cross-sectional view of the steering component of this utility model;

[0024] Figure 6 This is a bottom view of the steering component of this utility model;

[0025] Figure 7 This is a perspective view of the partition of this utility model;

[0026] Figure 8 This is a perspective view of the torsion spring of this utility model;

[0027] Figure 9 This is a perspective view of the bushing of this utility model;

[0028] Wherein: 1-Housing, 2-Steering component, 3-Partition plate, 4-Torsion spring, 5-Busset, 6-Solid lubricant, 7-Snap ring, 8-Sealing ring, 9-Connecting rod bracket, 10-Circuit board, 11-Inner ring part two, 12-Outer ring part two, 13-Step part, 14-Conical surface one, 15-Inner hole, 16-Cavity, 17-Limiting post two, 21-Steering part, 22-Inner ring part one, 23-Outer ring part one, 24-Conical surface two, 25-Slot, 26-Mounting hole, 27-Arc groove, 31-Circular groove, 32-Snap ring, 33-Limiting post one, 41-Torsion arm one, 42-Torsion arm two, 51-Opening groove, 100-Mounting groove, 101-Sealing groove, 102-Lower mounting groove, 103-T-ring groove; Detailed Implementation

[0029] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0030] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the intentions or conventions of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0031] like Figure 1 , 2 As shown in Figure 5, this utility model provides a self-lubricating steering structure for Hall sensors, including a housing 1, a steering component 2, a partition 3, a torsion spring 4, a bushing 5, a solid lubricant 6, a retaining ring 7, a sealing ring 8, a connecting rod bracket 9, and a circuit board 10. The housing 1 is rotatably connected to the steering component 2. The housing 1 and the steering component 2 are combined to form an upper mounting groove 100. The housing 1 is connected to the partition 3 and is divided by the partition 3 into a sealing groove 101 for accommodating a magnetic ring 20 and a lower mounting groove 102 for accommodating the circuit board 10. The steering component 2 is provided with a steering part 21, an inner ring part 22, and an outer ring part 23 distributed sequentially from the inside to the outside. The torsion spring 4 is sleeved between the inner ring part 22 and the outer ring part 23. A bushing 5 is installed between the steering part 21 and the housing 1. A solid lubricant 6 is provided on one side of the bushing 5. The steering part 21 extends through the bushing 5 into the sealing groove 101, and a retaining ring 7 is connected to the outer end of the steering part 21.

[0032] In this utility model, the housing 1, steering component 2 and partition 3 are all made by one-piece injection molding process. The overall structure is simple and compact, and the assembly is convenient and efficient. A spiral opening groove 51 bushing 5 with built-in solid lubricant 6 is provided between the housing 1 and the steering component 2, which significantly reduces the rotational friction resistance. Combined with the conical self-centering guide and axial limiting structure, the steering movement is always smooth, without jamming or abnormal noise.

[0033] Combination Figure 3As shown, in this embodiment, the housing 1 is provided with an inner ring portion 11 and an outer ring portion 12. The inner ring portion 22 is sleeved on the outside of the inner ring portion 11. A T-shaped annular groove 103 with the same outer contour as the bushing 5 is formed between the steering portion 21 and the inner ring portion 11. The bushing 5 is disposed in the T-shaped annular groove 103. A sealing ring 8 is provided between the outer ring portion 23 and the outer ring portion 12. The housing 1 and the steering component 2 are combined to form an upper mounting groove 100. The inner side of the upper mounting groove 100 is sealed by heat welding or adhesive partition 3, and the outer side is sealed by sealing ring 8, so that the upper mounting groove 100 forms a sealed cavity, preventing external impurities from entering the upper mounting groove 100 and preventing the steering structure from being blocked.

[0034] Combination Figure 3 , 5 As shown, in this embodiment, the inner side of the inner ring 21 is provided with a stepped portion 13, and the snap ring 7 abuts against the stepped portion 13 through a flat washer. The outer side of the inner ring 21 is provided with a conical surface 14, and the inner ring 22 is provided with a conical surface 24 corresponding to the conical surface 14. The steering component 2 and the housing 1 are installed by self-centering cooperation through the conical surface 14 and the conical surface 24. The upper and lower ends of the steering component 2 are respectively limited by the bushing 5 and the stepped portion 13 to prevent the steering component 2 from axially moving relative to the housing 1, ensuring that the distance between the magnetic ring 20 and the circuit board remains unchanged, so that the signal output is stable.

[0035] Combination Figure 9 As shown, in this embodiment, one side of the bushing 5 is provided with an opening groove 51 for accommodating solid lubricant 6. The opening groove 51 is spirally distributed on the side of the bushing 5. Since the opening groove 51 has a spiral structure, while ensuring the structural strength of the bushing 5, the total amount of solid lubricant 6 is increased, and the lubrication area of ​​the steering component 2 is increased, thereby reducing the frictional resistance of the rotating structure.

[0036] Combination Figure 4 , 6 As shown in Figure 8, in this embodiment, the torsion spring 4 has vertically distributed torsion arms 41 and 42 at both ends. The steering component 2 has a slot 25 for engaging the torsion arm 41. The housing 1 has symmetrically distributed inner holes 15 for engaging the torsion arm 42. The torsion spring 4 is sleeved between the inner ring 22 and the outer ring 23, and the two torsion arms of the torsion spring 4 are respectively engaged in the slot 25 and the inner hole 15. The housing 1 has two sets of symmetrically distributed inner holes 15. The torsion spring 4 is installed in different inner holes 15 to realize the left-hand or right-hand rotation reset of the steering component 2, thereby improving the versatility of the sensor.

[0037] Combination Figure 5As shown, in this embodiment, the steering component 2 is provided with staggered mounting holes 26 and arc-shaped grooves 27 at the inner ring part 22. The steering component 2 has three sets of mounting holes 26 and arc-shaped grooves 27. The steering component 2 is connected to the external connecting rod bracket 9 through the mounting holes 26 to realize the transmission of the headlight turning action or the vehicle height adjustment action to the steering component 2. The arc-shaped grooves 27 reduce the material used in the steering component 2 while making the wall thickness of the steering component 2 uniform, providing a reasonable flow channel for the plastic melt, which is conducive to the injection molding of the steering component 2.

[0038] Combination Figure 7 As shown, in this embodiment, the housing 1 is provided with a cavity 16 for sealing and connecting the partition 3. The partition 3 is provided with a circular groove 31 for accommodating the steering component 2, a retaining ring 32 for engaging the cavity 16, and a limiting post 33 for fixing the circuit board 10. The housing 1 is provided with a limiting post 17 for fixing the circuit board 10. The partition 3 is engaged into the cavity 16 by the retaining ring 32 and connected to the cavity 16 by heat welding or gluing. The circuit board 10 is provided with positioning holes corresponding to the limiting post 33 and the limiting post 17. The precise positioning and installation of the circuit board 10 is achieved by the limiting post 33 and the limiting post 17, ensuring that the output signals of the sensors produced in batches are consistent.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-lubricating steering structure for a Hall sensor, comprising a housing (1), a steering component (2), a partition (3), and a torsion spring (4), wherein the housing (1) is rotatably connected to the steering component (2), the housing (1) and the steering component (2) are combined to form an upper mounting groove (100), the housing (1) is connected to the partition (3), and the partition (3) divides the housing (1) into a sealing groove (101) for accommodating a magnetic ring, and a lower mounting groove (102) for accommodating a circuit board, characterized in that, It also includes a bushing (5), a solid lubricant (6) and a retaining ring (7) disposed in the upper mounting groove (100). The steering component (2) is provided with a steering part (21), an inner ring part (22) and an outer ring part (23) distributed from the inside to the outside. The torsion spring (4) is sleeved between the inner ring part (22) and the outer ring part (23). A bushing (5) is installed between the steering part (21) and the housing (1). A solid lubricant (6) is provided on one side of the bushing (5). The steering part (21) extends through the bushing (5) into the sealing groove (101), and a retaining ring (7) is connected to the outer end of the steering part (21).

2. The self-lubricating steering structure applied to a Hall sensor according to claim 1, characterized in that: The housing (1) is provided with an inner ring part two (11) and an outer ring part two (12). The inner ring part one (22) is sleeved on the outside of the inner ring part two (11). The turning part (21) and the inner ring part two (11) form a T-shaped ring groove (103) with the same outer contour as the bushing (5). The bushing (5) is located in the T-shaped ring groove (103). A sealing ring (8) is provided between the outer ring part one (23) and the outer ring part two (12).

3. The self-lubricating steering structure applied to a Hall sensor according to claim 2, characterized in that: The inner ring part 2 (11) has a stepped part (13) on its inner side, and the snap ring (7) abuts against the stepped part (13) through a flat washer. The inner ring part 2 (11) has a conical surface 1 (14) on its outer side, and the inner ring part 1 (22) has a conical surface 2 (24) corresponding to the conical surface 1 (14).

4. The self-lubricating steering structure applied to a Hall sensor according to claim 2, characterized in that: The bushing (5) has an opening groove (51) on one side for accommodating solid lubricant (6).

5. The self-lubricating steering structure applied to a Hall sensor according to claim 4, characterized in that: The opening groove (51) is spirally distributed on the side of the bushing (5).

6. The self-lubricating steering structure applied to a Hall sensor according to claim 2, characterized in that: The torsion spring (4) has vertically distributed torsion arm one (41) and torsion arm two (42) at both ends. The steering component (2) has a slot (25) for engaging torsion arm one (41). The housing (1) has symmetrically distributed inner holes (15) for engaging torsion arm two (42).

7. The self-lubricating steering structure applied to a Hall sensor according to claim 1, characterized in that: The steering component (2) has staggered mounting holes (26) and arc-shaped grooves (27) at the inner ring part (22).

8. The self-lubricating steering structure applied to a Hall sensor according to claim 1, characterized in that: The housing (1) has a cavity (16) for sealing and connecting partition (3), the partition (3) has a circular groove (31) for accommodating the steering component (2), a retaining ring (32) for engaging the cavity (16), and a limiting post (33) for fixing the circuit board. The housing (1) has a limiting post (17) for fixing the circuit board.

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