Eddy current type angle detection mechanism

Abstract

The utility model discloses an eddy current type angle detection mechanism which comprises a base. The projection assembly is rotatably mounted on the base; a transmission assembly; the driving mechanism is arranged on one side of the base, and the driving mechanism is in transmission connection with the projection assembly through a transmission assembly; the control panel is arranged on the side, away from the driving mechanism, of the base; the eddy current blade wheel is arranged at the end, close to the control panel, of the projection assembly and synchronously rotates along with the projection assembly, and a magnetic part is arranged at the position, corresponding to the eddy current blade wheel, of the control panel. By means of the control panel, the eddy current blade wheel and the magnetic part, when the projection assembly rotates, an electromagnetic field can be generated under cooperation of the eddy current blade wheel and the magnetic part, an electromagnetic detection chip in the control panel can detect the intensity of the generated electromagnetic field, and therefore the rotation angle of the projection assembly is judged; therefore, the projection assembly can be quickly and accurately adjusted to the set angle position.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting technology, and in particular to an eddy current angle detection mechanism. Background Technology

[0002] With the rapid development of automotive front lighting technology, many high-tech products such as ADB, AFS, and MDF have emerged. Among them, MDF, as an adaptive high beam that achieves beam pattern switching through a mechanical structure, has attracted the attention of many OEMs.

[0003] In the prior art, when the projection component is driven by a mechanical structure to achieve light shape switching, it is necessary to judge whether the mechanical switching is in place, which makes it impossible for the projection component to be quickly and accurately adjusted to the designated position. In this regard, this application proposes an eddy current angle detection mechanism to solve this problem. Summary of the Invention

[0004] Based on this, in order to solve the problems existing in the prior art, this application provides an eddy current angle detection mechanism, including a base;

[0005] The projection assembly is rotatably mounted on the base.

[0006] Transmission components;

[0007] The drive mechanism is located on one side of the base and is connected to the projection assembly via a transmission component.

[0008] The control board is located on the side of the base away from the drive mechanism;

[0009] The eddy current impeller is located at one end of the projection assembly near the control board and rotates synchronously with the projection assembly. The control board has a magnetic component at the position corresponding to the eddy current impeller.

[0010] Furthermore, the projection assembly includes a mounting bracket, a lens, and a rotating shaft. The lens is disposed on one side of the mounting bracket, and the mounting bracket is rotatably connected to the base via the rotating shaft. The end of the rotating shaft near the drive mechanism is connected to the transmission assembly.

[0011] Furthermore, a first bearing is fitted at the connection between the rotating shaft and the base, and the outer wall of the first bearing is fixedly connected to the base.

[0012] Furthermore, the transmission assembly includes a transmission rod, a first transmission wheel, a second transmission wheel, and a third transmission wheel. The two ends of the transmission rod are rotatably mounted on the base. The first and second transmission wheels are fixedly sleeved on the outer wall of the transmission rod at intervals. The third transmission wheel is fixedly sleeved on the end of the rotating shaft near the transmission rod. The first transmission wheel is connected to the output end of the drive mechanism, and the second and third transmission wheels are connected.

[0013] Furthermore, the first, second, and third transmission wheels can be friction wheels, gears, or worm gears.

[0014] Furthermore, the drive mechanism is connected to the transmission rod, the first transmission wheel, the second transmission wheel, and the third transmission wheel via a reduction transmission with a transmission ratio of 120:1.

[0015] Furthermore, the eddy current impeller is mounted on the other end of the shaft via a mounting component, and there is a gap between the eddy current impeller and the magnetic component.

[0016] Furthermore, the magnetic component is an electromagnetic coil.

[0017] Beneficial effects: Through the control board, eddy current impeller and magnetic components, an electromagnetic field is generated when the projection component rotates. The electromagnetic detection chip in the control board detects the intensity of the generated electromagnetic field, thereby determining the rotation angle of the projection component. This allows the projection component to be quickly and accurately adjusted to the set angle position. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the control board structure of the eddy current angle detection mechanism of this utility model;

[0020] Figure 2 This is a schematic diagram of the eddy current impeller structure of the eddy current angle detection mechanism of this utility model.

[0021] Figure 3 This is a schematic diagram of the transmission component structure of the eddy current angle detection mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the eddy current angle detection mechanism of this utility model;

[0023] In the diagram: 1. Base; 2. Projection assembly; 21. Mounting bracket; 22. Lens; 23. Rotating shaft; 231. First bearing; 3. Drive mechanism; 4. Transmission rod; 41. First transmission wheel; 42. Second transmission wheel; 5. Third transmission wheel; 6. Control board; 61. Magnetic component; 7. Eddy current impeller; 8. Mounting component.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] 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.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] like Figure 1-4 As shown, this application embodiment provides an eddy current angle detection mechanism, including a base 1;

[0029] Projection component 2 is rotatably mounted on base 1;

[0030] Transmission components;

[0031] Drive mechanism 3 is located on one side of base 1 and is connected to projection assembly 2 via transmission assembly.

[0032] Control board 6 is located on the side of base 1 away from drive mechanism 3;

[0033] The eddy current impeller 7 is located at one end of the projection assembly 2 near the control plate 6 and rotates synchronously with the projection assembly 2. The control plate 6 is provided with a magnetic element 61 at the position corresponding to the eddy current impeller 7.

[0034] In this embodiment, the projection component 2 is used to project light according to a specific light path, and the drive mechanism 3 is used to drive the projection component 2 to change the projection angle. The drive mechanism 3 is detachably installed on the base 1, and the drive mechanism 3 and the transmission component are both set on the same side of the base 1, which can effectively reduce the space occupied. Specifically, when working, the drive mechanism 3 is started, and the drive mechanism 3 drives the transmission component to drive the projection component 2, so that the projection component 2 rotates relative to the base 1, thereby achieving the purpose of changing the projection angle.

[0035] The drive mechanism 3 and transmission components drive the projection component 2 to rotate, so that the projection angle of the projection component 2 can be adjusted. At this time, the direction of the light illumination will change according to the angle of the projection component 2, thereby increasing the illumination range of the vehicle lights.

[0036] The control board 6 is a PCBA board, and an electromagnetic detection chip is provided inside the control board 6. The magnetic component 61 includes, but is not limited to, an electromagnetic coil. At least one magnetic component 61 is provided. In this embodiment, there is a gap between the magnetic component 61 and the eddy current impeller 7.

[0037] When the projection component 2 rotates relative to the base 1, the projection component 2 drives the eddy current impeller 7 to rotate synchronously. At this time, the eddy current impeller 7 and the magnetic component 61 on the control board 6 will generate an electromagnetic field. At this time, the electromagnetic detection chip on the control board 6 will detect the electromagnetic field. Different magnetic field strengths can correspond to different positions of the projection component 2. The electromagnetic detection chip determines whether the projection component 2 has rotated to the set angle position based on the received magnetic field signal, that is, corresponding to different light patterns.

[0038] With the control board 6, eddy current impeller 7 and magnetic component 61 set up, when the projection component 2 rotates, an electromagnetic field is generated by the magnetic component 61 and the eddy current impeller 7 working together. The electromagnetic detection chip in the control board 6 will detect the intensity of the generated electromagnetic field, thereby judging the rotation angle of the projection component 2, so that the projection component can be quickly and accurately adjusted to the set angle position.

[0039] In one embodiment, the projection assembly 2 includes a mounting frame 21, a lens 22 and a rotating shaft 23. The lens 22 is disposed on one side of the mounting frame 21. The mounting frame 21 is rotatably connected to the base 1 via the rotating shaft 23. One end of the rotating shaft 23 is connected to the transmission assembly.

[0040] In this embodiment, the lens 22 is used to project light, the mounting bracket 21 is used to support and mount the lens 22, and the two ends of the rotating shaft 23 are rotatably inserted into the top surface of the base 1.

[0041] When in operation, the drive mechanism 3 is started, and the drive mechanism 3 drives the transmission component to drive the rotating shaft 23, causing the rotating shaft 23 to rotate around the axis of the rotating shaft 23. The rotation of the axis causes the mounting bracket 21 to rotate synchronously, thereby causing the lens 22 to rotate synchronously, so that the lens 22 rotates relative to the base 1, thereby achieving the effect of changing the projection angle of the lens 22.

[0042] When the rotating shaft 23 rotates, it drives the eddy current impeller 7 to rotate synchronously. At this time, the eddy current impeller 7 and the magnetic component 61 on the control board 6 will generate an electromagnetic field. The electromagnetic detection chip in the control board 6 will detect the intensity of the generated electromagnetic field to determine the specific position of the rotating shaft 23, so that the lens 22 can be quickly and accurately adjusted to the set angle position.

[0043] In one embodiment, a first bearing 231 is sleeved at the connection between the rotating shaft 23 and the base 1, and the outer wall of the first bearing 231 is fixedly connected to the base 1.

[0044] In this embodiment, by providing a first bearing 231 at the connection between the rotating shaft 23 and the base 1, the rotation of the rotating shaft 23 can be made smoother, the friction between the rotating shaft 23 and the base 1 can be reduced, and the noise when the rotating shaft 23 rotates can also be reduced.

[0045] In one embodiment, the transmission assembly includes a transmission rod 4, a first transmission wheel 41, a second transmission wheel 42, and a third transmission wheel 5. The two ends of the transmission rod 4 are rotatably mounted on the base 1. The first transmission wheel 41 and the second transmission wheel 42 are fixedly sleeved on the outer wall of the transmission rod 4 at intervals. The third transmission wheel 5 is fixedly sleeved on one end of the rotating shaft 23 near the transmission rod 4. The first transmission wheel 41 is connected to the output end of the drive mechanism 3, and the second transmission wheel 42 and the third transmission wheel 5 are connected to each other.

[0046] In this embodiment, the first transmission wheel 41, the second transmission wheel 42, and the third transmission wheel 5 are all worm gears. In other embodiments, the first transmission wheel 41, the second transmission wheel 42, and the third transmission wheel 5 can be friction wheels or gears, and the third transmission wheel 5 can be a half gear. Specifically, the first transmission wheel 41 meshes with the output end of the drive mechanism 3, the second transmission wheel 42 and the third transmission wheel 5 mesh with each other, and the axis of the transmission rod 4 is perpendicular to the axis of the rotating shaft 23.

[0047] The drive mechanism 3, transmission rod 4, first transmission wheel 41, second transmission wheel 42 and third transmission wheel 5 form a reduction transmission group; the transmission reduction ratio is 120:1, the drive mechanism 3 can output a large speed to realize the rapid rotation of the lens 22, and the large speed can generate less noise; the operation of the drive mechanism 3 facilitates the rapid and stable switching of the lens 22, as well as the precise control of the position of the lens 22 after rotation.

[0048] During operation, the output end of the drive mechanism 3 drives the first transmission wheel 41 to rotate. The rotation of the first transmission wheel 41 drives the transmission rod 4 to rotate synchronously. At the same time, it also drives the second transmission wheel 42 to rotate synchronously. The rotation of the second transmission wheel 42 drives the third transmission wheel 5, which meshes with it, to rotate. The rotation of the third transmission wheel 5 drives the rotating shaft 23 to rotate around the axis of the rotating shaft 23. The rotation of the axis drives the mounting bracket 21 to rotate synchronously, thereby driving the lens 22 to rotate synchronously. This causes the lens 22 to rotate relative to the base 1, thereby changing the projection angle of the lens 22.

[0049] Among them, the first transmission wheel 41, the second transmission wheel 42 and the third transmission wheel 5 are all worm gears, which can make the projection angle control of the lens 22 more precise;

[0050] The eddy current impeller 7 is mounted on the other end of the rotating shaft 23 via the mounting part 8. When the third transmission wheel 5 rotates, it drives the rotating shaft 23 to rotate, and at the same time drives the eddy current impeller 7 to rotate synchronously.

[0051] In one embodiment, a second bearing is fitted at the connection between the two ends of the transmission rod 4 and the base 1, and the outer wall of the second bearing is fixedly connected to the base 1.

[0052] In this embodiment, by providing a second bearing at the connection between the transmission rod 4 and the base 1, the rotation of the transmission rod 4 can be made smoother, reducing the friction between the transmission rod 4 and the base 1, and also reducing the noise when the transmission rod 4 rotates.

[0053] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An eddy current type angle detection mechanism, characterized in that, include: Base; A projection assembly, which is rotatably mounted on the base; Transmission components; A drive mechanism is disposed on one side of the base, and the drive mechanism is connected to the projection assembly via the transmission assembly. A control board is disposed on the side of the base away from the drive mechanism; An eddy current impeller is provided, which is disposed at one end of the projection assembly near the control plate and rotates synchronously with the projection assembly. The control plate is provided with a magnetic element at the position corresponding to the eddy current impeller.

2. The eddy current angle detection mechanism according to claim 1, characterized in that, The projection assembly includes a mounting frame, a lens, and a rotating shaft. The lens is disposed on one side of the mounting frame. The mounting frame is rotatably connected to the base via the rotating shaft. The end of the rotating shaft near the drive mechanism is connected to the transmission assembly.

3. The eddy current angle detection mechanism according to claim 2, characterized in that, A first bearing is fitted at the connection between the rotating shaft and the base, and the outer wall of the first bearing is fixedly connected to the base.

4. The eddy current angle detection mechanism according to claim 2, characterized in that, The transmission assembly includes a transmission rod, a first transmission wheel, a second transmission wheel, and a third transmission wheel. The two ends of the transmission rod are rotatably mounted on the base. The first transmission wheel and the second transmission wheel are fixedly sleeved on the outer wall of the transmission rod at intervals. The third transmission wheel is fixedly sleeved on the end of the rotating shaft near the transmission rod. The first transmission wheel is connected to the output end of the drive mechanism, and the second transmission wheel and the third transmission wheel are connected.

5. The eddy current angle detection mechanism according to claim 4, characterized in that, The first transmission wheel, the second transmission wheel, and the third transmission wheel can be friction wheels, gears, or worm gears.

6. The eddy current angle detection mechanism according to claim 4, characterized in that, The drive mechanism is connected to the transmission rod, the first transmission wheel, the second transmission wheel, and the third transmission wheel via a speed reduction transmission with a transmission ratio of 120:

1.

7. The eddy current angle detection mechanism according to claim 4, characterized in that, The eddy current impeller is mounted on the other end of the shaft via a mounting component, and there is a gap between the eddy current impeller and the magnetic component.

8. The eddy current angle detection mechanism according to claim 1, characterized in that, The magnetic component is an electromagnetic coil.

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