Stepping motor driving rotation structure

Abstract

The utility model discloses a stepping motor driving rotation structure. The stepping motor driving rotation structure comprises a rotation assembly, a rotation platform, a magnetic device and a circuit board with at least one Hall sensor. The magnetic device is arranged in the rotating assembly, the circuit board is arranged on the rotating platform, and the magnetic device and the Hall sensor move relatively, so that the Hall sensor converts a magnetic signal into an electric signal. The magnetic device is arranged in the rotating assembly, the circuit board with the Hall sensors is arranged on the rotating platform, when the rotating assembly rotates relative to the rotating platform, the Hall sensors can detect the magnetic flux density generated by the magnetic device, and the rotating angle of the rotating assembly is obtained; the position and speed information of the rotating assembly can be accurately monitored, and the problem of step loss caused when a stepping motor drives a rotating structure is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of stepper motors, and specifically relates to a stepper motor driven rotating structure. Background Art

[0002] At present, the rotating mechanism driven by a motor is widely used in the fields of outdoor cameras and smart driving recorders. The rotating mechanism of such products needs to control the rotation angle. The products on the market usually use stepper motors to control the rotation angle, but the stepper motor does not use closed-loop control. Its position and speed signals during operation are not fed back to the control system, which leads to the stepper motor losing steps easily when the motor is selected or used improperly. It is also called stepper motor losing steps, which is generally explained as the stepper motor not reaching the position it should reach according to the instructions. Therefore, the rotating shaft mechanism driven by a stepper motor is not suitable for application scenarios with high precision requirements, and electronic products that use stepper motors to drive the rotating shaft are prone to abnormal rotation angles during use.

[0003] Therefore, it is urgent to propose a stepper motor driven rotation structure to avoid the stepper motor from losing step. Utility Model Content

[0004] In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a stepper motor driven rotating structure.

[0005] To solve the above technical problems, this application is implemented through the following technical solutions:

[0006] The present application proposes a stepper motor driven rotating structure, comprising: a rotating component, a rotating platform, a magnetic device and a circuit board with at least one Hall sensor; the magnetic device is arranged in the rotating component, the circuit board is arranged on the rotating platform, the magnetic device and the Hall sensor move relative to each other, so that the Hall sensor converts a magnetic signal into an electrical signal.

[0007] Optionally, the stepper motor drives a rotating structure, wherein the rotating component includes: a rotating shaft, a turntable, a driven member and a stepper motor with a driving member, the rotating shaft is connected to the turntable, the magnetic device is arranged on the rotating shaft, the driven member is connected to the rotating platform, the circuit board is arranged between the driven member and the rotating platform, and the driven member moves in coordination with the driving member.

[0008] Optionally, the stepper motor drives the rotating structure, wherein the driven member includes: a driven wheel; and / or the active member includes: a driving wheel.

[0009] Optionally, the stepper motor drives the rotating structure, wherein a bearing is provided inside the driven member; and the bearing is sleeved on the outside of the turntable and the rotating shaft.

[0010] Optionally, the stepper motor drives the rotating structure, wherein the driven member is provided with at least two screw hole steps.

[0011] Optionally, the stepper motor drives a rotating structure, wherein the magnetic device is annular.

[0012] Optionally, the stepper motor drives a rotating structure, wherein the magnetic device includes: a magnet.

[0013] Optionally, the stepper motor drives a rotating structure, wherein the magnets are magnetized at four points, the relative positions of the magnets are of the same polarity, and the adjacent positions of the magnets are of opposite polarity.

[0014] Optionally, the stepper motor drives a rotating structure, wherein the rotating shaft is engaged with the magnetic device.

[0015] Optionally, the stepper motor driven rotating structure further includes: a control module, wherein the control module is electrically connected to the circuit board and the rotating component.

[0016] Compared with the prior art, this application has the following technical effects:

[0017] The present application sets a magnetic device in the rotating component and sets a circuit board with multiple Hall sensors on the rotating platform. When the rotating component rotates relative to the rotating platform, the Hall sensor can detect the magnetic flux density generated by the magnetic device, obtain the rotation angle of the rotating component, and realize accurate monitoring of the position and speed information of the rotating component, thereby avoiding the step loss problem of the stepper motor driving the rotating structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 : An exploded view of an embodiment of the present application;

[0020] Figure 2 : A schematic diagram of an embodiment of the present application;

[0021] Figure 3 : A cross-sectional schematic diagram of an embodiment of the present application;

[0022] Figure 4 : A schematic diagram of a follower in one embodiment of the present application;

[0023] Figure 5: A schematic diagram of a magnet in one embodiment of the present application;

[0024] Figure 6 : A schematic diagram of a rotating shaft connected to a magnet in one embodiment of the present application;

[0025] In the figure: a stepper motor 1, a control module 2, a turntable 3, a rotating platform 4, a rotating shaft 5, a Hall sensor 6, a follower 7, a bearing 8, a magnetic device 9, a screw hole step 10, a bending part 11 and a circuit board 12. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] like Figures 1 to 3 As shown, one of the embodiments of the present application is a stepper motor driven rotating structure, comprising: a rotating component, a rotating platform 4, a magnetic device 9 and a circuit board 12 having at least one Hall sensor 6; the magnetic device 9 is arranged in the rotating component, the circuit board 12 is arranged on the rotating platform 4, the magnetic device 9 and the Hall sensor 6 move relative to each other, so that the Hall sensor 6 converts the magnetic signal into an electrical signal.

[0028] In this embodiment, a magnetic device 9 is arranged in the rotating component, and a circuit board 12 with multiple Hall sensors 6 is arranged on the rotating platform 4. When the rotating component rotates relative to the rotating platform 4, the Hall sensor 6 can detect the magnetic flux density generated by the magnetic device 9, obtain the rotation angle of the rotating component, and realize accurate monitoring of the position and speed information of the rotating component, thereby avoiding the step loss problem of the stepper motor 1 driving the rotating structure.

[0029] In this embodiment, it also includes: a control module 2, which is electrically connected to the circuit board 12 and the rotating component. The control module 2 obtains the rotation angle information transmitted by the Hall sensor 6, and corrects the rotation angle of the rotating component according to the actual angle deviation, thereby realizing closed-loop control of the rotating component, solving the step loss problem, and improving the rotation accuracy.

[0030] In this embodiment, the number of the Hall sensors 6 is set to two. Of course, those skilled in the art are motivated to adaptively increase or decrease the number to ensure the accuracy of detection.

[0031] Specifically, the rotating assembly includes: a rotating shaft 5, a turntable 3, a driven member 7 and a stepping motor 1 with a driving member, the rotating shaft 5 is connected to the turntable 3, the magnetic device 9 is arranged on the rotating shaft 5, the driven member 7 is connected to the rotating platform 4, the circuit board 12 is arranged between the driven member 7 and the rotating platform 4, and the driven member 7 moves in coordination with the driving member.

[0032] In this embodiment, the control module 2 and the stepper motor 1 are arranged on the turntable 3, and the control module 2 is connected to the stepper motor 1 and the circuit board 12. When the control module 2 sends a rotation command to the stepper motor 1, the rotating platform 4 and the Hall sensor 6 remain stationary, and the turntable 3, the rotating shaft 5 and the magnetic device 9 rotate together. The Hall sensor 6 feeds back the rotation angle of the magnetic device 9 to the control module 2. The control module 2 corrects the rotation angle of the stepper motor 1 according to the actual angle deviation, thereby realizing closed-loop control of the stepper motor 1.

[0033] Optionally, the control module 2 includes but is not limited to a single chip microcomputer.

[0034] Optionally, the driven member 7 includes but is not limited to a driven wheel; the active member includes but is not limited to a driving wheel. In this embodiment, the driven wheel meshes with the driving wheel.

[0035] Specifically, a bearing 8 is provided inside the driven member 7 ; the bearing 8 is sleeved on the outside of the turntable 3 and the rotating shaft 5 .

[0036] In this embodiment, the bearing 8 is disposed inside the driven wheel, and the turntable 3 and the rotating shaft 5 are fixedly connected and sleeved inside the bearing 8 to facilitate relative rotation of the rotating assembly and the rotating platform 4.

[0037] Optionally, the follower 7 is provided with at least two screw hole steps 10 , and the follower 7 , the circuit board 12 and the rotating platform 4 are connected via the screw hole steps 10 .

[0038] In this embodiment, the number of the screw hole steps 10 is set to three, and those skilled in the art are motivated to adaptively increase or decrease the number to ensure the stability of the connection.

[0039] Specifically, the magnetic device 9 is ring-shaped.

[0040] Optionally, the magnetic device 9 includes but is not limited to a magnet.

[0041] Specifically, the magnets are magnetized at four points, the relative positions of the magnets are of the same polarity, and the adjacent positions of the magnets are of opposite polarity.

[0042] In this embodiment, the upper left half and the lower right half of the magnet are S poles, and the lower left half and the upper right half of the magnet are N poles.

[0043] Specifically, the rotating shaft 5 is clamped with the magnetic device 9 , a plurality of bending parts 11 are provided on the circumference of the rotating shaft 5 , and the magnetic device 9 is disposed in a groove formed by the plurality of bending parts 11 to ensure a stable connection between the magnetic device 9 and the rotating shaft 5 .

[0044] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] The above embodiments are only used to illustrate the technical solution of the present application but not to limit it. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application, and should be included in the scope of the claims of the present application.

Claims

1. A stepper motor driven rotating structure, characterized in that: include: A rotating component, a rotating platform, a magnetic device and a circuit board with at least one Hall sensor; the magnetic device is arranged in the rotating component, the circuit board is arranged on the rotating platform, the magnetic device and the Hall sensor move relative to each other, so that the Hall sensor converts the magnetic signal into an electrical signal.

2. The stepper motor driven rotating structure according to claim 1, characterized in that: The rotating assembly includes: a rotating shaft, a turntable, a driven member and a stepping motor with a driving member, the rotating shaft is connected to the turntable, the magnetic device is arranged on the rotating shaft, the driven member is connected to the rotating platform, the circuit board is arranged between the driven member and the rotating platform, and the driven member moves in coordination with the driving member.

3. The stepper motor driven rotating structure according to claim 2, characterized in that: The driven member includes: a driven wheel; and / or the active member includes: a driving wheel.

4. The stepper motor driven rotating structure according to claim 2, characterized in that: A bearing is arranged inside the driven member; and the bearing is sleeved outside the rotating disk and the rotating shaft.

5. The stepper motor driven rotating structure according to claim 2, characterized in that: The driven member is provided with at least two screw hole steps.

6. The stepper motor driven rotating structure according to any one of claims 1 to 5, characterized in that: The magnetic device is ring-shaped.

7. The stepper motor driven rotating structure according to any one of claims 1 to 5, characterized in that: The magnetic device includes: a magnet.

8. The stepper motor driven rotating structure according to claim 7, characterized in that: The magnets are magnetized at four points, the relative positions of the magnets are of the same polarity, and the adjacent positions of the magnets are of opposite polarity.

9. The stepper motor driven rotating structure according to any one of claims 2 to 5, characterized in that: The rotating shaft is engaged with the magnetic device.

10. The stepper motor driven rotating structure according to any one of claims 1 to 5, characterized in that: Also includes: A control module is electrically connected to the circuit board and the rotating assembly.

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