Magnetic attraction module and magnetic attraction support

Abstract

This application relates to the field of support device technology. This application discloses a magnetic attraction module and a magnetic attraction bracket. The magnetic attraction module includes: a housing; a magnetic force adjustment component disposed within the housing, the magnetic force adjustment component including a permanent magnet unit and an electromagnet unit, the electromagnet unit and the permanent magnet unit being configured in cooperation, and the total magnetic attraction force generated by the magnetic force adjustment component being changed by adjusting the current flowing through the electromagnet unit; and a control component electrically connected to the electromagnet unit, used to control the current flowing through the electromagnet unit. By adjusting the total magnetic attraction force of the magnetic force adjustment component through the control component, when the magnetic attraction module needs to be fixed, it can provide a strong magnetic attraction force, enabling the electronic device to be firmly fixed; when the user removes the electronic device from the magnetic attraction module, the magnetic attraction force provided by the magnetic attraction module decreases, making it easier for the user to remove the electronic device and improving the user experience.

Description

Technical Field

[0001] This application relates to the field of adsorption device technology, and in particular to a magnetic adsorption module and a magnetic adsorption bracket. Background Technology

[0002] As mobile phones, tablets, and other electronic devices become increasingly widespread, their accessories are also evolving. Stands are one such important accessory. Users can mount their electronic devices on stands for easier operation and viewing.

[0003] There are many types of stands, and magnetic stands are one of them. In order to ensure the adsorption effect on electronic devices, the magnetic force is set to be very strong, which makes it very difficult for users to remove electronic devices, resulting in a poor user experience. Utility Model Content

[0004] This application provides a magnetic module and a magnetic bracket with adjustable magnetic attraction force.

[0005] This application provides a magnetic attraction module, comprising: a housing; a magnetic force adjustment component disposed within the housing, the magnetic force adjustment component including a permanent magnet unit and an electromagnet unit, the electromagnet unit and the permanent magnet unit being configured in cooperation, and the total magnetic attraction force generated by the magnetic force adjustment component being changed by adjusting the current flowing through the electromagnet unit; and a control component electrically connected to the electromagnet unit for controlling the current flowing through the electromagnet unit.

[0006] In the technical solution of this application embodiment, because a permanent magnet unit is provided, the permanent magnet unit can continuously provide magnetic attraction force for adsorbing electronic devices, so that the magnetic module can still have the attraction function when the power is off, making the magnetic module have a wide range of applications and high reliability. Because an electromagnet unit and a control component electrically connected to the electromagnet unit are provided, the control component can adjust the current flowing through the electromagnet unit, thereby changing the magnetic field of the electromagnet unit and thus changing the total magnetic attraction force of the magnetic force adjustment component. This can not only firmly attract electronic devices of different weights, but also reduce the magnetic attraction force when the user removes the electronic device, making it easier for the user to take the electronic device and improving the user experience.

[0007] This application also provides a magnetic holder, including the magnetic module described above.

[0008] Because the magnetic holder includes the magnetic module described above, it can attract electronic devices of different weights, making it widely applicable. The magnetic holder retains its attraction function even when power is off, demonstrating strong reliability. When a user removes an electronic device from the magnetic holder, the magnetic force decreases, making it easier for the user to pick up the device and improving the user experience.

[0009] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0010] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0011] Figure 1 A perspective view of a magnetic module provided in one embodiment of this application;

[0012] Figure 2 A perspective view of a magnetic module with a magnetic attracting sheet provided in an embodiment of this application;

[0013] Figure 3 An exploded view of a magnetic suction module provided in one embodiment of this application;

[0014] Figure 4 A perspective view of the housing of a magnetic module provided in one embodiment of this application;

[0015] Figure 5 A three-dimensional schematic diagram of the electromagnet unit of a magnetic attraction module provided in an embodiment of this application.

[0016] Explanation of reference numerals in the attached figures

[0017] 10. Shell; 11. Inner wall; 12. Outer wall; 13. Bottom wall; 20. Magnetic adjustment assembly; 21. Permanent magnet unit; 22. Electromagnet unit; 221. Magnetic core; 222. Coil; 30. Control assembly; 40. Magnetizing sheet; 50. Cover plate. Detailed Implementation

[0018] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0023] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0024] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0026] The following explanation is based on the accompanying drawings.

[0027] This application provides a magnetic attraction module, such as Figures 1 to 3 As shown, it includes: a housing 10; a magnetic force adjustment assembly 20, which is disposed inside the housing 10, the magnetic force adjustment assembly 20 including a permanent magnet unit 21 and an electromagnet unit 22, the electromagnet unit 22 and the permanent magnet unit 21 are configured to cooperate, and the total magnetic attraction force generated by the magnetic force adjustment assembly 20 is changed by adjusting the current flowing through the electromagnet unit 22; and a control assembly 30, which is electrically connected to the electromagnet unit 22 and is used to control the current flowing through the electromagnet unit 22.

[0028] The magnetic attraction module includes a housing 10, a magnetic force adjustment component 20, and a control component 30. The magnetic force adjustment component 20 is housed within the housing 10 and provides a magnetic field. The control component 30 is electrically connected to the magnetic force adjustment component 20 and can adjust the magnitude and / or direction of the current passing through the magnetic force adjustment component 20, thereby changing the strength and / or direction of the magnetic field provided by the magnetic force adjustment component 20 to alter the magnetic attraction force provided.

[0029] The magnetic module can be installed on any electronic device accessory that needs to hold electronic devices in place, such as magnetic stands, power banks, etc.

[0030] The housing 10 can be made of any material; for example, it can be made of a magnetically conductive material, such as magnetic stainless steel. When the housing 10 is made of a magnetically conductive material, the magnetic field lines of the magnetic field of the magnetic force adjustment component 20 extend along the wall surface of the housing 10. At least one side of the housing 10 has an opening, allowing the magnetic field lines to diverge from the opening. The direction of the magnetic field lines at the opening is parallel to the opening direction. The opening provides magnetic attraction, allowing electronic devices to be attracted to it.

[0031] The magnetic force adjustment component 20 generates a magnetic field, and the magnetic field lines can extend in any direction. A current flows through the magnetic force adjustment component 20, and the strength of the generated magnetic field is controlled by changing the current.

[0032] The magnetic force adjustment assembly 20 includes an electromagnet unit 22 and a permanent magnet unit 21. The magnetic field strength generated by the electromagnet unit 22 is positively correlated with the current strength. The magnetic field lines of the permanent magnet unit 21 and the electromagnet unit 22 can be parallel to each other or intersect but not perpendicular. That is, the permanent magnet unit 21 can be tilted or placed parallel to the electromagnet unit 22. When the electromagnet unit 22 is energized, it can either cancel the magnetic field of the permanent magnet unit 21 or enhance the magnetic field of the permanent magnet unit 21.

[0033] The control component 30 can be disposed inside the housing 10, outside the housing 10, or near the housing 10. The control component 30 is electrically connected to the electromagnet unit 22. The user can use the control component 30 to turn on / off and adjust the current flowing through the electromagnet unit 22, thereby changing the magnitude of the magnetic attraction force generated by the electromagnet unit 22. The user can also use the control component 30 to change the direction of the current flowing through the magnetic force adjustment component 20, thereby changing the direction of the magnetic attraction force generated by the electromagnet unit 22. For example, the control component 30 is a circuit board.

[0034] In practical applications, users can control the current flowing through the electromagnet unit 22 to be zero using the control component 30. In this case, the magnetic attraction force generated by the electromagnet unit is zero, and only the permanent magnet unit 21 generates a magnetic attraction force. Users can also control the current flowing through the electromagnet unit 22 using the control component 30, making the magnetic attraction force generated by the electromagnet unit 22 and the permanent magnet unit 21 in the same or approximately the same direction. In this case, the total magnetic attraction force of the electromagnet unit 22 and the permanent magnet unit 21 is greater than the magnetic attraction force generated by the permanent magnet unit 21 alone, thereby enhancing the total magnetic attraction force of the magnetic module and increasing the adhesion strength to electronic devices. Users can also control the current flowing through the electromagnet unit 22 using the control component 30, making the magnetic attraction force generated by the electromagnet unit 22 and the permanent magnet unit 21 in opposite or approximately opposite directions. In this case, the total magnetic attraction force of the electromagnet unit 22 and the permanent magnet unit 21 is less than the magnetic attraction force generated by the permanent magnet unit 21 alone, thereby weakening the total magnetic attraction force of the magnetic module and making it easier for users to remove electronic devices.

[0035] In the technical solution of this application embodiment, since a permanent magnet unit 21 is provided, the permanent magnet unit 21 can continuously provide magnetic attraction force for adsorbing electronic devices, so that the magnetic module can still have the adsorption function when the power is off, making the magnetic module have a wider range of applications and greater reliability. Since an electromagnet unit 22 and a control component 30 electrically connected to the electromagnet unit 22 are provided, the control component 30 can adjust the current flowing through the electromagnet unit 22, thereby changing the magnetic field of the electromagnet unit 22 and thus changing the total magnetic attraction force of the magnetic force adjustment component 20. This can not only firmly adsorb electronic devices of different weights, but also reduce the magnetic attraction force when the user takes away the electronic device, making it easier for the user to take the electronic device and improving the user experience.

[0036] In some embodiments, the permanent magnet unit 21 provides a constant first magnetic attraction force, the electromagnet unit 22 provides a variable second magnetic attraction force, and the total magnetic attraction force is the vector sum of the first magnetic attraction force and the second magnetic attraction force.

[0037] The total magnetic attraction force that the magnetic force adjustment component 20 can provide is the vector sum of the first magnetic attraction force and the second magnetic attraction force. The permanent magnet unit 21 provides a constant first magnetic attraction force, meaning that both the magnitude and direction of the first magnetic attraction force are constant. The electromagnet unit 22 provides a variable second magnetic attraction force, meaning that the magnitude and / or direction of the second magnetic attraction force can be variable.

[0038] When the electromagnet unit 22 is energized, the second magnetic attraction force is not zero, and the total magnetic attraction force is the vector sum of the first and second magnetic attraction forces. When the electromagnet unit 22 is de-energized, the second magnetic attraction force is zero, and the total magnetic attraction force provided by the magnetic force adjustment component 20 is the first magnetic attraction force.

[0039] In practical applications, the direction of the second magnetic attraction force is parallel or approximately parallel to the direction of the first magnetic attraction force, but the direction of the second magnetic attraction force is not perpendicular to the direction of the first magnetic attraction force.

[0040] When the second magnetic attraction force is in the same direction as the first magnetic attraction force, or when the component of the second magnetic attraction force is in the same direction as the first magnetic attraction force, the two are superimposed to increase the total magnetic attraction force, thereby enhancing the attraction force of the magnetic module and enabling it to attract heavier electronic devices.

[0041] When the second magnetic force is in the opposite direction to the first magnetic force, or when the component of the second magnetic force in the direction of the first magnetic force is in the opposite direction, if the second magnetic force is less than the first magnetic force, the two forces cancel each other out, resulting in a smaller total magnetic force, making it easier for users to pick up electronic devices. If the second magnetic force is greater than the first magnetic force, the total magnetic force becomes the same direction as the second magnetic force, which helps to be applicable to a wider range of application scenarios.

[0042] When the second magnetic attraction force and the first magnetic attraction force are opposite in direction and the same in magnitude, the second magnetic attraction force can completely cancel the first magnetic attraction force, making the total magnetic attraction force 0.

[0043] Therefore, the magnitude and direction of the total magnetic attraction force can be changed. The magnetic module can flexibly change the attraction direction and is suitable for electronic devices of different weights. It can also save effort for users when they take away electronic devices.

[0044] In some embodiments, the direction of the second magnetic attraction force is parallel to the direction of the first magnetic attraction force, which is more conducive to the design of the magnetic attraction module and makes the structure of the magnetic attraction module simpler.

[0045] In some embodiments, the control component 30 is configured to control the second magnetic attraction force generated by the electromagnet unit 22, such that the second magnetic attraction force can weaken the first magnetic attraction force.

[0046] The second magnetic attraction force is opposite to the first magnetic attraction force, or the component of the second magnetic attraction force in the direction of the first magnetic attraction force is opposite to the first magnetic attraction force. The second magnetic attraction force weakens the first magnetic attraction force, thereby reducing the total magnetic attraction force generated by the first and second magnetic attraction forces, making it easier for users to take away electronic devices.

[0047] The following explanation uses the example of the first and second magnetic attraction forces being parallel in direction:

[0048] When the magnetic force adjustment component 20 is powered on, the electromagnet unit 22 generates a magnetic field opposite to that of the permanent magnet unit 21. That is, the direction of the second magnetic attraction force is opposite to that of the first magnetic attraction force. The second magnetic attraction force weakens the first magnetic attraction force. The total magnetic attraction force provided by the magnetic force adjustment component 20 is provided by the weakened remaining magnetic attraction force, making it convenient for the user to take away the electronic device.

[0049] When a user needs to remove an electronic device, the control component 30 controls the electromagnet unit 22 to generate a second magnetic attraction force that weakens the first magnetic attraction force, allowing the user to remove the electronic device effortlessly.

[0050] In practical applications, when continuous attraction of electronic devices is required, the control component can reduce the current flowing through the electromagnet unit 22 to zero, thus reducing the second magnetic attraction force generated by the electromagnet unit 22 to zero. At this time, only the first magnetic attraction force generated by the permanent magnet unit 21 provides attraction to the electronic device. The electromagnet unit 22 does not need to be powered for extended periods, thereby preventing overheating and extending its lifespan. When it is necessary to remove the electronic device, the control component can control the current flowing through the electromagnet unit 22, causing the second magnetic attraction force to weaken the first magnetic attraction force. At this time, the vector sum of the first and second magnetic attraction forces provides attraction to the electronic device. The direction of the second magnetic attraction force is opposite to that of the first magnetic attraction force, and the magnitude of the second magnetic attraction force is less than or equal to the magnitude of the first magnetic attraction force. When the magnitude of the second magnetic attraction force is equal to the magnitude of the first magnetic attraction force, the first and second magnetic attraction forces cancel each other out, and the magnetic module no longer provides attraction to the electronic device. When the magnitude of the second magnetic attraction force is less than that of the first magnetic attraction force, the magnetic module provides attraction to the electronic device that is less than the first magnetic attraction force, allowing the user to easily remove the electronic device.

[0051] The magnitude of the second magnetic attraction is not specifically limited, as long as it can weaken the magnitude of the first magnetic attraction. Those skilled in the art can choose to set it according to actual needs.

[0052] Furthermore, the control component 30 can adjust the power of the electromagnet unit 22 by changing the current input to it, thereby adjusting the demagnetization range and reducing the magnetic field of the magnetic attraction component from maximum to zero. The demagnetization time is extremely fast, reaching the millisecond level. Therefore, by energizing the electromagnet unit 22, the magnetic attraction force of the magnetic attraction module can be quickly reduced, making control agile and simple.

[0053] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the housing 10 includes an inner wall 11 and an outer wall 12, and a magnetic locking space is formed between the inner wall 11 and the outer wall 12. The permanent magnet unit 21 and the electromagnet unit 22 are placed in the magnetic locking space.

[0054] The housing is made of a magnetically conductive material, and the housing 10 includes an inner wall 11 and an outer wall 12. The inner wall 11 and the outer wall 12 are opposite to each other and spaced apart. The permanent magnet unit 21 and the electromagnet unit 22 are located between the inner wall 11 and the outer wall 12, and the magnetic field generated by them is located between the inner wall 11 and the outer wall 12. The inner wall 11 and the outer wall 12 confine the magnetic field between them to form a magnetically locked space.

[0055] Thus, the inner wall 11 and the outer wall 12 together guide the magnetic field lines and confine the magnetic field within the magnetic lock space, resulting in a shorter magnetic field line path and lower magnetic resistance.

[0056] In some embodiments, see continue to see Figure 1 , Figure 3 and Figure 4 The inner wall 11 has an annular cross-sectional shape, and the outer wall 12 is arranged around the outer periphery of the inner wall 11; the permanent magnet unit 21 and the electromagnet unit 22 are both arranged around the inner wall 11.

[0057] The inner wall 11 has an annular cross-sectional shape. Exemplarily, the inner wall 11 is constructed as a tube. An outer wall 12 is disposed around the outer periphery of the inner wall 11 and is spaced apart from it. The cross-sectional shape of the outer wall 12 is similar to that of the inner wall 11, and the hydraulic diameter of the outer wall 12 is larger than that of the inner wall 11. The outer wall 12 and the inner wall 11 together form an annular interlayer.

[0058] In this application, "ring-shaped" refers to a closed shape. The cross-section of the inner wall 11 can be any closed shape, such as a circle, an ellipse, or a polygon. This application does not impose any special limitations on this.

[0059] The permanent magnet unit 21 and the electromagnet unit 22 are respectively arranged around the inner wall 11, and the permanent magnet unit 21 and the electromagnet unit 22 are stacked in the axial direction of the inner wall 11 so that the magnetic field of the permanent magnet unit 21 can be uniformly canceled.

[0060] Therefore, the magnetic field lines of both the permanent magnet unit 21 and the electromagnet unit 22 extend along the axial direction of the annular inner wall 11, giving the housing 10 an attractive force in the axial direction. In addition, the central space surrounding the inner wall 11 can be used to dissipate heat from the electromagnet unit 22.

[0061] In some embodiments, such as Figure 3 and Figure 4 As shown, the housing 10 also includes a bottom wall 13, an inner wall 11 and an outer wall 12 disposed on the bottom wall 13, so that one side of the magnetic locking space is closed by the bottom wall 13, and the opposite side is open to form an opening.

[0062] The inner wall 11 and the outer wall 12 are spaced apart from each other and placed on the bottom wall 13. Magnetic field lines radiate from the opening, which provides magnetic attraction. When in use, electronic devices can be placed in the opening.

[0063] Optionally, the bottom wall 13 covers one side of the magnetic locking space and one side of the receiving space enclosed by the inner wall 11, and the receiving space can hold the control component 30, battery cell, etc.

[0064] In one specific embodiment, the control component 30 is a circuit board, which covers one side of the receiving space enclosed by the inner wall 11 of the circuit board. The receiving space facilitates heat dissipation for the electromagnet unit 22 and the circuit board.

[0065] As a result, magnetic field lines emerge from the opening along the axial direction of the inner wall 11, and the opening can provide a strong adsorption force.

[0066] In some embodiments, such as Figure 3 As shown, the permanent magnet unit 21 is located on the side of the electromagnet unit 22 away from the housing 10 used to attract electronic devices, that is, the permanent magnet unit 21 is located on the side of the electromagnet unit 22 away from the opening.

[0067] The permanent magnet unit 21 can be placed on the bottom wall 13, and the electromagnet unit 22 is located on the side of the permanent magnet unit 21 away from the bottom wall 13.

[0068] Therefore, the magnetic field provided by the electromagnet unit 22 can effectively cover the magnetic field of the permanent magnet unit 21, which helps to improve the cancellation effect.

[0069] In some embodiments, the magnetic module further includes a magnetic attracting sheet 40, which is disposed at the opening.

[0070] A magnetic guide plate 40 is positioned at the opening. The magnetic guide plate 40 can cover the opening, thus sealing the magnetic locking space and providing a supporting surface for placing electronic equipment. Magnetic field lines passing through the magnetic guide plate 40 are guided by it and remain parallel to the opening direction, improving the dispersion of the magnetic field at the opening.

[0071] Since the magnetic attractor 40 is located at the opening, it can reduce the scattering of magnetic field lines at the opening, which helps to improve the uniformity of adsorption.

[0072] In some embodiments, the magnetic module further includes a cover 50 disposed at the opening.

[0073] A cover plate 50 can be provided at the opening to seal the opening and close the magnetic locking space. The cover plate 50 is used to shield the magnetic locking space and provide a support surface for electronic equipment or magnetic sheet 40.

[0074] Because a cover 50 is provided at the opening, the cover 50 can cover the components in the magnetic lock space, which helps to improve the aesthetics.

[0075] In one specific embodiment, the permanent magnet unit 21, the electromagnet unit 22, the cover plate 50, and the magnetic attracting plate 40 are stacked sequentially from the bottom wall 13 to the opening. The surface of the magnetic attracting plate 40 away from the bottom wall 13 is used to support the electronic device.

[0076] In some embodiments, such as Figure 3 and Figure 5 As shown, the electromagnet unit 22 includes a magnetic core 221 and a coil 222, with the coil 222 wound around the magnetic core 221.

[0077] A magnetic core 221 is arranged around the inner wall 11, and the cross-section of the magnetic core 221 is annular. The magnetic core 221 may be made of magnetic stainless steel. Coils 222 are arranged around the axis of the magnetic core 221, and the coils 222 are parallel to each other and compactly arranged.

[0078] Thus, the wound coil 222 can generate a magnetic field, and the magnetic core 221 can enhance this magnetic field, enabling the magnetic module to provide a stronger magnetic attraction force.

[0079] In some embodiments, the periphery of the magnetic core 221 has a limiting groove formed by a recess along its own thickness direction, and the coil 222 is accommodated in the limiting groove.

[0080] Thus, coil 222 can be securely fitted around the periphery of magnetic core 221.

[0081] In some embodiments, the periphery of the magnetic core 221 has a limiting portion that protrudes along its own thickness direction and is located on at least one side of the coil 222.

[0082] In one specific embodiment, the limiting part is located on one side of the magnetic core 221, the cover plate 50 is disposed on the other side of the magnetic core 221, and the coil 222 is located between the limiting part and the cover plate 50 and is limited between the limiting part and the cover plate 50.

[0083] In some embodiments, the magnetic module further includes a proximity sensor, the control component 30 is electrically connected to the proximity sensor, and is configured to: in response to the proximity sensor detecting an object approaching, control the current flowing through the electromagnet unit to change the total magnetic attraction force.

[0084] The magnetic attraction module also includes a proximity sensor. The proximity sensor can be located on or near the housing 10. The proximity sensor is electrically connected to the control component 30. The control component 30 can detect whether the magnetic adjustment component 20 is in an active state, and considers the state in which the magnetic adjustment component 20 attracts the electronic device as an active state.

[0085] When a user approaches the magnetic module, the proximity sensor detects the approach and sends the result to the control component 30. The control component 30 adjusts the current based on the detection result and the state of the magnetic force adjustment component 20. When the magnetic force adjustment component 20 is in the working state, the control component 30 controls the total magnetic force of the magnetic force adjustment component 20 to decrease; when the magnetic force adjustment component 20 is not in the working state, the control component 30 does not act.

[0086] When the user does not take the electronic device, the proximity sensor detects that no user is near the housing 10. The detection result is sent to the control component 30. When the magnetic force adjustment component 20 is in the working state, the control component 30 either does not act or controls the total magnetic attraction force of the magnetic force adjustment component 20 to increase based on the detection result. When the magnetic force adjustment component 20 is not in the working state, the control component 30 does not act.

[0087] For example, the control component 30 is a circuit board with a built-in algorithm for adjusting the current based on the detection results of the proximity sensor and the magnetic adjustment component 20.

[0088] Optionally, the magnetic module also includes a power supply. The power supply may be a battery cell. The power supply is connected to the magnetic force adjustment component 20 via the control component 30.

[0089] Therefore, the proximity sensor can detect the user's action of picking up the electronic device, and then automatically reduce the magnetic force of the magnetic module through the control component 30, so that the user can easily pick up the electronic device, which helps to improve the user experience.

[0090] This application also provides a magnetic holder, including the magnetic module of the above embodiment.

[0091] Optionally, the magnetic holder also includes a cable, one end of which is connected to and conducts power to the magnetic force adjustment component 20, and the other end of which is a plug for electrical connection to an external power source. Also optionally, the magnetic holder includes a battery cell, which is electrically connected to the magnetic force adjustment component 20 via the control component 30.

[0092] In an optional embodiment, the magnetic bracket further includes a support member. The support member is used to secure the housing 10 or place it on an external structure. Exemplarily, the support member is a clip that can clamp the housing 10 to the vehicle's air vent.

[0093] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A magnetic attraction module, characterized in that, include: case; A magnetic force adjustment component is disposed within the housing. The magnetic force adjustment component includes a permanent magnet unit and an electromagnet unit. The electromagnet unit and the permanent magnet unit are configured in cooperation, and the total magnetic attraction force generated by the magnetic force adjustment component is changed by adjusting the current flowing through the electromagnet unit. A control component, electrically connected to the electromagnet unit, is used to control the current flowing through the electromagnet unit.

2. The magnetic module according to claim 1, characterized in that, The permanent magnet unit provides a constant first magnetic attraction force, the electromagnet unit provides a variable second magnetic attraction force, and the total magnetic attraction force is the vector sum of the first magnetic attraction force and the second magnetic attraction force.

3. The magnetic suction module according to claim 2, characterized in that, The control component is configured as follows: The second magnetic attraction force generated by the electromagnet unit is controlled so that the second magnetic attraction force can weaken the first magnetic attraction force.

4. The magnetic module according to any one of claims 1 to 3, characterized in that, The housing includes an inner wall and an outer wall, which are spaced apart and form a magnetic locking space between them. The permanent magnet unit and the electromagnet unit are both placed in the magnetic locking space.

5. The magnetic module according to claim 4, characterized in that, The inner wall body has an annular cross-sectional shape, and the outer wall body is arranged around the outer periphery of the inner wall body; Both the permanent magnet unit and the electromagnet unit are arranged around the inner wall.

6. The magnetic suction module according to claim 4, characterized in that, The permanent magnet unit is located on the side of the electromagnet unit away from the housing used to attract electronic devices.

7. The magnetic module according to any one of claims 1 to 3, characterized in that, The electromagnet unit includes a magnetic core and a coil, with the coil wound around the magnetic core.

8. The magnetic module according to claim 7, characterized in that, The magnetic core has a limiting groove recessed along its thickness direction on its periphery, and the coil is accommodated in the limiting groove.

9. The magnetic module according to any one of claims 1 to 3, characterized in that, The magnetic attraction module also includes a proximity sensor. The control component is electrically connected to the proximity sensor and configured to: in response to the proximity sensor detecting an object approaching, control the current flowing through the electromagnet unit to change the total magnetic attraction force.

10. A magnetic holder, characterized in that, Includes the magnetic suction module as described in any one of claims 1 to 9.

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