Magnetic attraction device

Abstract

The utility model discloses a magnetic attraction device. The magnetic attraction device comprises a magnetic attraction assembly and a top plate. The magnetic attraction assembly comprises a base and a magnetic attraction piece, and the magnetic attraction piece is installed on the base and provided with a first surface used for attracting magnetic attraction equipment. The side, away from the base, of the top plate is provided with a second surface. The top plate has a first state and a second state. When the top plate is in the first state, the second surface is parallel to the first surface. When the top plate is in the second state, the second surface inclines relative to the first surface, so that at least part of the top plate protrudes out of the first surface in the direction away from the base, the magnetic attraction equipment is effectively pushed away from the first surface, a user can conveniently take down the magnetic attraction equipment in a labor-saving mode, and the use experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of bracket technology for electronic devices, and in particular to a magnetic attraction device. Background Technology

[0002] Existing magnetic phone holders use internal magnets to strongly attract the phone or the phone case, thus fixing and supporting the phone. To ensure good adhesion, the magnetic force of the phone holder is often very strong. As a result, when the user needs to remove the phone, a large force perpendicular to the surface of the holder needs to be applied to separate the two, which seriously affects the user experience. Utility Model Content

[0003] The main purpose of this invention is to provide a magnetic attraction device that can ensure that the magnetic attraction device has sufficient magnetic force to properly attract the equipment, while making the action of separating the equipment from the magnetic attraction device easier.

[0004] To achieve the above objectives, this utility model proposes a magnetic attraction device, comprising:

[0005] A magnetic suction assembly is suitable for adsorbing magnetic suction devices. The magnetic suction assembly includes a base and a magnetic suction element, the magnetic suction element is installed on the base, and the magnetic suction element has a first surface.

[0006] A top plate is movably connected to the base. The top plate has a second surface on the side opposite to the bottom of the base. The top plate has a first state and a second state. When the top plate is in the first state, the second surface is parallel to the first surface, and the first surface is adapted to contact the magnetic device. When the top plate is in the second state, the second surface is inclined relative to the first surface, and at least a portion of the top plate protrudes from the first surface in a direction opposite to the base, so as to separate the magnetic device from the first surface.

[0007] In some embodiments, the magnetic attraction device further includes:

[0008] A drive assembly, mounted on the base and connected to the top plate, is configured to drive the top plate to switch between the first state and the second state.

[0009] In some embodiments, the drive assembly includes a rotating shaft, a first transmission member, a second transmission member, and a drive member. The first transmission member and the second transmission member are both connected to the rotating shaft. The drive member is connected to the first transmission member and configured to drive the first transmission member to move. The second transmission member is also connected to the top plate and configured to move with the rotation of the rotating shaft, so that the top plate switches between the first state and the second state.

[0010] In some embodiments, the first transmission member is configured as a gear, the second transmission member is configured as an eccentric wheel, the driving member drives the first transmission member to rotate, thereby driving the rotating shaft to rotate, and the second transmission member intermittently contacts the top plate as the rotating shaft rotates, so that the top plate switches between the first state and the second state.

[0011] In some embodiments, the base has a receiving cavity, the drive assembly is mounted in the receiving cavity, and the base has a through hole communicating with the receiving cavity on the side facing the top plate. The top plate has a protrusion on the side facing the base, the protrusion being inserted into the through hole and configured to slide relative to the through hole. The second transmission member is configured to move the protrusion in a direction of exiting the receiving cavity under the drive of the drive member, so that the top plate is in the second state.

[0012] In some embodiments, the base is further provided with a slot communicating with the receiving cavity, the driving member includes a pressing part and a driving rack, the driving rack is connected to the first transmission member, the pressing part is located outside the receiving cavity and passes through the slot and is connected to the driving rack; the pressing part is configured to slide relative to the slot and drive the driving rack to move, so that the first transmission member rotates.

[0013] In some embodiments, the magnetic attraction device further includes:

[0014] A connecting shaft is connected to the top plate and rotatably connected to the base, such that the top plate can rotate about the connecting shaft to tilt the second surface toward the first surface;

[0015] Alternatively, the connecting shaft is connected to the base and rotatably connected to the top plate, such that the top plate can rotate about the connecting shaft to tilt the second surface toward the first surface.

[0016] In some embodiments, the magnetic attraction device further includes:

[0017] The connecting shaft is provided with a first connecting hole in the base and a second connecting hole in the top plate. The connecting shaft passes through the first connecting hole and the second connecting hole, and the connecting shaft can rotate relative to the first connecting hole and / or the second connecting hole.

[0018] In some embodiments, the top plate is provided with a clearance hole. When the top plate is in the first state, the magnetic attractor passes through the clearance hole, and the second surface and the first surface are located on the same plane.

[0019] In some embodiments, the magnetic assembly further includes a base plate located on opposite sides of the base, the base having a receiving cavity with an opening at one end, the base plate being configured to cover the opening; a magnetic protrusion is provided on the side of the base away from the base plate, and the base has a third surface for contacting the side of the top plate away from the second surface, the first surface being located on the side of the magnetic protrusion away from the third surface, and the magnetic member being received in the receiving cavity at the end near the first surface.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] In the technical solution of this utility model, the magnetic suction assembly includes a base and a magnetic suction member. The magnetic suction member is mounted on the base and has a first surface for adsorbing magnetic devices. A top plate is movably connected to the base, and the side of the top plate facing away from the base has a second surface. The top plate has a first state and a second state. When the top plate is in the first state, the second surface is parallel to the first surface. When the top plate is in the second state, the second surface is inclined relative to the first surface, such that at least a portion of the top plate protrudes from the first surface in a direction away from the base, thereby effectively pushing the magnetic device away from the first surface, so that the user can remove the magnetic device with less effort and improve the user experience. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the magnetic attraction device in one embodiment of the present invention; wherein, the top plate is in the first state;

[0024] Figure 2 This is a schematic diagram of the magnetic attraction device in one embodiment of the present invention; wherein the top plate is in the second state;

[0025] Figure 3 This is an exploded view of the magnetic attraction device in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the magnetic attraction device from another perspective in one embodiment of the present invention; wherein the top plate is in the second state;

[0027] Figure 5 In one embodiment of this utility model, the magnetic attraction device is along Figure 4A sectional view taken along the AA direction.

[0028] Explanation of icon numbers:

[0029] Magnetic attraction device 100;

[0030] Magnetic assembly 110;

[0031] Base 111; Receiving cavity 1111; Through hole 1112; Slot 1113; Opening 1114; Magnetic boss 1115;

[0032] Third surface 1116;

[0033] Magnetic suction component 112; First surface 1121; Base plate 113;

[0034] Top plate 120;

[0035] Second surface 121; protrusion 122; clearance hole 123;

[0036] Driver component 130;

[0037] Rotating shaft 131; First transmission component 132; Second transmission component 133; Driving component 134; Pressing part 1341;

[0038] Drive rack 1342;

[0039] Connecting shaft 140.

[0040] 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

[0041] 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.

[0042] In view of this, please refer to Figures 1 to 5This utility model provides a magnetic attraction device 100, which includes a magnetic attraction component 110 and a top plate 120. Magnetic attraction devices include, but are not limited to, electronic products such as mobile phones, tablets, and smartwatches. The magnetic attraction component 110 consists of a base 111 and a magnetic element 112, wherein the magnetic element 112 is mounted on the base 111 and has a first surface 1121 for attracting magnetic devices. The first surface 1121 is designed as a planar structure to ensure uniform attraction force when in contact with the magnetic device. The top plate 120 is movably connected to the base 111, and has a second surface 121 on its side opposite to the bottom of the base 111. It should be noted that the top plate 120 has no magnetic attraction, or a weak magnetic attraction, so that after the magnetic device is detached from the first surface 1121, the magnetic device can be temporarily stabilized on the top plate 120 due to its weak magnetic attraction, preventing it from falling and being damaged. This design also allows users to easily remove the magnetic device with simple force. The magnetic component 112 can be a permanent magnet, an electromagnet, or a metal that does not block the magnetic field; that is, the magnetic component 112 can be a combination of a magnet and a metal component. For example, the base 111 has an internal cavity, and the magnet is installed in this cavity and abuts against the inner wall near the first surface 1121, thereby giving the first surface 1121 magnetic attraction.

[0043] Depending on the operating state of the magnetic attraction device 100, the top plate 120 has a first state and a second state. When the top plate 120 is in the first state, the second surface 121 is parallel to and close to the first surface 1121, facilitating the placement of the magnetic attraction device. In some embodiments, the first surface 1121 and the second surface 121 may be on the same plane, allowing the magnetic attraction device to be stably adsorbed onto the first surface 1121. In other embodiments, there is a certain distance between the second surface 121 and the first surface 1121, and the distance from the second surface 121 to the magnetic attraction device is greater than the distance from the first surface 1121 to the magnetic attraction device, thereby ensuring that the magnetic attraction device does not come into contact with the top plate 120 during adsorption, avoiding weakening of the adsorption force.

[0044] When the top plate 120 is in the second state, the second surface 121 is inclined relative to the first surface 1121, so that at least a portion of the top plate 120 protrudes from the first surface 1121 in a direction away from the base 111, thereby effectively pushing the magnetic device away from the first surface 1121 and achieving the purpose of removing the magnetic device with effortless ease.

[0045] When the second surface 121 is tilted relative to the first surface 1121, the maximum angle between the second surface 121 and the first surface 1121 can be between 2° and 5°, which can provide an attraction force of 5N to 25N to the magnetic device, improving the compatibility with the magnetic device. For example, the maximum angle between the second surface 121 and the first surface 1121 can be 1.5°, 2°, 2.5°, 3°, 4°, 5°, 6°, etc. This not only facilitates the removal of the magnetic device but also effectively prevents the magnetic device from being accidentally dropped and damaged due to the complete loss of attraction force of the magnetic component 112 to the magnetic device caused by the magnetic component 112 moving too far away.

[0046] It should be noted that the movement of the top plate 120 relative to the base 111 can be achieved using various mechanical structures, including but not limited to linkage mechanisms, eccentric wheel mechanisms, and spring mechanisms. Furthermore, the movement of the top plate 120 can also be controlled by electromagnetic drive or motor drive to ensure operational accuracy and reliability.

[0047] To facilitate the switching of the top plate 120 between the first and second states, the magnetic suction device 100 of this application further includes a drive assembly 130. This drive assembly 130 is mounted on the base 111 and connected to the top plate 120, and is capable of driving the top plate 120 to move relative to the base 111. The drive assembly 130 can be implemented mechanically, hydraulically, or electrically. In some embodiments, the drive assembly 130 employs a spring-loaded mechanism, using the force of the spring to move the top plate 120. When the user triggers the spring release mechanism, the spring pushes the top plate 120 from the first state to the second state, eliminating the need for an additional power source, simplifying the device structure, and improving reliability. In other embodiments, the drive assembly 130 can be a small motor drive system. The motor is connected to the top plate 120 via gear transmission or other types of transmission mechanisms. When a control signal is received, the motor starts and drives the top plate 120 to switch states. Furthermore, sensors and control systems can be added to the system, allowing the state transitions of the top plate 120 to be precisely controlled according to actual needs, improving the operational flexibility and efficiency of the entire device.

[0048] Please see Figure 3 and Figure 5Specifically, the drive assembly 130 includes a rotating shaft 131, a first transmission member 132, a second transmission member 133, and a drive member 134. The rotating shaft 131 is connected to the base 111, ensuring stability and accuracy during rotation. Both the first transmission member 132 and the second transmission member 133 are connected to the rotating shaft 131, while the drive member 134 is connected to the first transmission member 132 and configured to drive the first transmission member 132. When the drive member 134 is activated, it causes the first transmission member 132 to rotate, thereby driving the rotating shaft 131 to rotate. The second transmission member 133 is connected to the top plate 120 and moves along with it during the rotation of the rotating shaft 131, allowing the top plate 120 to switch between a first state and a second state during movement. Furthermore, the drive assembly 130 also includes a limiting device to stop the movement of the top plate 120 when it reaches a predetermined first or second state, preventing damage caused by excessive operation. In some embodiments, the limiting device may be magnetic or mechanical to ensure accurate and reliable switching each time, thereby ensuring greater convenience and safety for users when removing or installing magnetic devices.

[0049] The design of the rotating shaft 131, the first transmission component 132, the second transmission component 133, and the driving component 134 gives the driving assembly 130 excellent durability and stability, maintaining stable performance even under frequent use. Thus, complex state transitions of the top plate 120 can be achieved with simple input actions, significantly improving the ease of operation of the magnetic suction device 100, allowing users to more easily and safely remove and install the magnetic suction device. The first transmission component 132 includes, but is not limited to, gears, pulleys, or rollers; the second transmission component 133 includes, but is not limited to, cams or gears; and the driving component 134 includes, but is not limited to, electric motors, hydraulic cylinders, or pneumatic cylinders.

[0050] It is understood that in some embodiments, the first transmission member 132 may be a gear, and the second transmission member 133 may be an eccentric wheel. The driving member 134 may be a structure capable of driving the first transmission member 132 to rotate, including but not limited to gears, racks, motors, etc. The driving member 134 drives the gear (i.e., the first transmission member 132) to rotate, thereby driving the rotating shaft 131 to operate. Since the second transmission member 133 is in the form of an eccentric wheel, it intermittently contacts the top plate 120 as the rotating shaft 131 rotates, thus effectively pushing the top plate 120 from the first state to the second state. This not only ensures the stability of the top plate 120's state switching but also reduces energy loss and improves the overall efficiency of the device.

[0051] In some embodiments, the profile of the eccentric wheel can be designed according to the travel distance of the top plate 120 to ensure a smooth transition when the top plate 120 changes state. For example, when the angle between the second surface 121 and the first surface 1121 is large, i.e., the maximum travel distance of the top plate 120 is long, the eccentricity of the eccentric wheel can be increased to provide sufficient pushing force when the top plate 120 switches to the second state. Conversely, when the maximum travel distance of the top plate 120 is short, the eccentricity can be reduced to avoid unnecessary damage to the top plate 120 or the drive assembly 130 due to excessive force. This avoids unnecessary vibration or damage caused by excessive thrust. Furthermore, sensors can be introduced to monitor the position of the top plate 120, automatically stopping the operation of the drive assembly 134 when the top plate 120 reaches a predetermined position, ensuring accuracy and safety in each operation. This method not only expands the applicability of the device but also significantly improves the user experience.

[0052] Please see Figure 5 In some embodiments, the base 111 has a receiving cavity 1111, and the drive assembly 130 is installed in the receiving cavity 1111. The base 111 has a through hole 1112 on the side facing the top plate 120, and this through hole 1112 communicates with the receiving cavity 1111. The top plate 120 has a protrusion 122 on the side facing the base 111, which passes through the through hole 1112 and can slide relative to the through hole 1112. When the second transmission member 133 (eccentric wheel) rotates with the rotation of the shaft 131, it pushes the protrusion 122 to move in the direction of exiting the receiving cavity 1111, thereby causing the top plate 120 to rotate to a preset angle, that is, the top plate 120 completes the switch from the first state to the second state. At this time, the second surface 121 is inclined relative to the first surface 1121, causing the magnetic device to be pushed away from the first surface 1121 by the top plate 120.

[0053] In some embodiments, to accommodate magnetic devices of different sizes and weights, multiple protrusions 122 at different positions can be provided on the top plate 120, and correspondingly multiple through holes 1112 can be configured on the base 111. Thus, different protrusions 122 can be pushed to adjust the state of the top plate 120 according to actual needs, thereby optimizing the tilt angle and thrust of the top plate 120 and ensuring the best separation effect.

[0054] Please see Figure 3Furthermore, the base 111 is also provided with a slot 1113 communicating with the receiving cavity 1111. The driving member 134 includes a pressing part 1341 and a driving rack 1342, wherein the driving rack 1342 is connected to the first transmission member 132 (gear). The pressing part 1341 is located outside the receiving cavity 1111 and is connected to the driving rack 1342 through the slot 1113. The user can manually press or pull the pressing part 1341 to make it slide relative to the slot 1113, thereby driving the driving rack 1342 to move. The movement of the drive rack 1342 causes the first transmission member 132 (gear) to rotate, which in turn drives the second transmission member 133 (eccentric wheel) to move via the rotating shaft 131. The rotating second transmission member 133 applies a pushing force to the top plate 120, causing it to rotate away from the base 111. This causes the second surface 121 to come into contact with the magnetic device and apply a force opposite to the attraction force provided by the magnetic member 112, pushing the magnetic device away from the first surface 1121. After the magnetic device is removed from the first surface 1121, releasing or pulling the pressing part 1341 in the opposite direction will cause the drive rack 1342 to move in the opposite direction, returning the top plate 120 to its first state.

[0055] In some embodiments, the pressing part 1341 can be replaced with an electric button or a touch sensor to automate the entire process. For example, when a user approaches the device, the sensor detects the movement and automatically triggers the drive rack 1342 to move, completing the state transition of the top plate 120 without manual operation. Furthermore, a feedback mechanism, such as an audible prompt or LED indicator, can be added to inform the user that the top plate 120 has successfully transitioned its state, significantly improving the user experience. Simultaneously, to ensure reliability during long-term use, lubricant or self-lubricating materials can be added between the drive rack 1342 and the pressing part 1341 to reduce friction and extend service life.

[0056] Please see Figure 3 and Figure 5 The magnetic suction device 100 also includes a connecting shaft 140, which is used to connect the top plate 120 and the base 111, so that the top plate 120 can rotate relative to the base 111 while ensuring the installation stability of the top plate 120.

[0057] In some embodiments, the connecting shaft 140 is fixedly connected to the top plate 120, meaning the connecting shaft 140 can be integrally formed with the top plate 120, including but not limited to injection molding, die casting, etc. Alternatively, the connecting shaft 140 and the top plate 120 can be firmly joined by welding, interference fit, or other connection methods. The connecting shaft 140 is rotatably connected to the base 111. Thus, the top plate 120 can move through the rotation of the connecting shaft 140 and the base 111, thereby achieving an inclination change of the second surface 121 relative to the first surface 1121, which facilitates the removal of the magnetic suction device. Specifically, the edge of the base 111 near the top plate 120 has a groove, and the opposite ends of the groove have shaft holes. The top plate 120 has a protruding structure that matches the groove, and the opposite ends of the protruding structure have shafts (which are the connecting shaft 140). The connecting shaft 140 is inserted into the shaft holes to achieve the connection between the base 111 and the top plate 120.

[0058] To enhance the stability and accuracy of the top plate 120 during rotation, ball bearings or sliding bearings can be installed at both ends of the connecting shaft 140. Furthermore, a spring loading mechanism can be employed to allow the top plate 120 to automatically return to its initial state without external force, improving ease of use.

[0059] In other embodiments, the connecting shaft 140 is fixedly connected to the base 111. The connecting shaft 140 can be integrally formed with the base 111 by means including but not limited to injection molding, die casting, etc. The connecting shaft 140 can also be fixedly connected to the base 111 by means including but not limited to welding or interference fit. This ensures that the connecting shaft 140 and the base 111 are tightly connected, thereby supporting the stable rotation of the top plate 120. Specifically, the connecting shaft 140 on the base 111 can be manifested as follows: the edge of the base 111 near the top plate 120 has a groove, and the opposite ends of the groove have shafts (i.e., connecting shafts 140) extending towards each other. The top plate 120 has a protruding structure corresponding to the groove, and the opposite ends of the protruding structure have shaft holes. The connecting shaft 140 is inserted into the shaft holes to connect with the top plate 120.

[0060] In some embodiments, both the base 111 and the top plate 120 are movably connected to the connecting shaft 140. Specifically, the base 111 has a first connecting hole, while the top plate 120 has a second connecting hole. The connecting shaft 140 passes through both the first and second connecting holes and is rotatable relative to the first and / or second connecting holes. This allows the top plate 120 to rotate flexibly around the connecting shaft 140, enabling it to smoothly tilt relative to the magnetic suction member 112, thus easily removing the magnetic device. In some embodiments, the magnetic suction device 100 also includes a damping structure, providing appropriate resistance to the top plate 120 during rotation. This ensures a good operating feel and prevents changes in state due to accidental contact, improving the safety and stability of the entire device. Specifically, this damping structure is installed at one or both ends of the connecting shaft 140. The damping structure can be a viscous damper or a magnetic damper, etc. When the top plate 120 rotates to a specific angle, the damper starts to work to slow down the rotation speed, so that the user can more accurately control the picking and placing of the magnetic suction device.

[0061] Please see Figure 3 and Figure 5 The top plate 120 is provided with a clearance hole 123. When the top plate 120 is in the first state, the magnetic attractor 112 passes through the clearance hole 123, so that the second surface 121 and the first surface 1121 are on the same plane, ensuring that the magnetic attractor can fit tightly against the first surface 1121. This not only ensures the adsorption effect of the magnetic attractor 100, but also avoids the influence of the top plate 120 on the magnetic attractor 112 in the first state, thereby improving the working efficiency and reliability of the entire device.

[0062] Please see Figure 3 The magnetic assembly 110 also includes a base plate 113, which, along with the top plate 120, is located on opposite sides of the base 111. The base 111 has a receiving cavity 1111 with an opening 1114 at one end, and the base plate 113 is configured to completely cover this opening 1114. The base plate 113 ensures the integrity of the device while providing some protection for the components within the receiving cavity 1111. The base plate 113 can be made of a similar material and thickness as the top plate 120 to ensure the uniformity and durability of the entire device.

[0063] The base 111 has a magnetic boss 1115 on the side opposite to the base plate 113, and the base 111 has a third surface 1116 for contacting the top plate 120 on the side opposite to the second surface 121. The first surface 1121 is located on the side of the magnetic boss 1115 away from the third surface 1116. The magnetic member 112 is accommodated in the portion of the receiving cavity 1111 near the first surface 1121. That is, the magnetic member 112 can be disposed in the cavity corresponding to the magnetic boss 1115 in the receiving cavity 1111 to ensure that the first surface 1121 has sufficient attraction to ensure the adsorption capacity of the magnetic device.

[0064] The base plate 113 may be equipped with a connecting structure, allowing the magnetic device 100 to be mounted on external equipment via this connecting structure, thereby improving installation flexibility and applicability. External equipment includes, but is not limited to, various support devices, pan-tilt units, etc.

[0065] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0066] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are 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 use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those 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.

[0067] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A magnetic attraction device, characterized in that, include: A magnetic suction assembly is suitable for adsorbing magnetic suction devices. The magnetic suction assembly includes a base and a magnetic suction element, the magnetic suction element is installed on the base, and the magnetic suction element has a first surface. A top plate is movably connected to the base. The top plate has a second surface on the side opposite to the bottom of the base. The top plate has a first state and a second state. When the top plate is in the first state, the second surface is parallel to the first surface, and the first surface is adapted to contact the magnetic suction device. When the top plate is in the second state, the second surface is inclined relative to the first surface, and at least a portion of the top plate protrudes from the first surface in a direction away from the base, so as to separate the magnetic device from the first surface.

2. The magnetic attraction device as described in claim 1, characterized in that, Also includes: A drive assembly, mounted on the base and connected to the top plate, is configured to drive the top plate to switch between the first state and the second state.

3. The magnetic attraction device as described in claim 2, characterized in that, The drive assembly includes a rotating shaft, a first transmission component, a second transmission component, and a drive component. The first transmission component and the second transmission component are both connected to the rotating shaft. The drive component is connected to the first transmission component and configured to drive the first transmission component to move. The second transmission component is also connected to the top plate and configured to move with the rotation of the rotating shaft, so that the top plate switches between the first state and the second state.

4. The magnetic attraction device as described in claim 3, characterized in that, The first transmission component is a gear, and the second transmission component is an eccentric wheel. The driving component drives the first transmission component to rotate, thereby driving the rotating shaft to rotate. The second transmission component intermittently contacts the top plate as the rotating shaft rotates, so that the top plate switches between the first state and the second state.

5. The magnetic attraction device as described in claim 4, characterized in that, The base has a receiving cavity, the drive assembly is mounted in the receiving cavity, and the base has a through hole communicating with the receiving cavity on the side facing the top plate. The top plate has a protrusion on the side facing the base, the protrusion is inserted into the through hole and configured to slide relative to the through hole; the second transmission member is configured to move the protrusion in the direction of exiting the receiving cavity under the drive of the drive member, so that the top plate is in the second state.

6. The magnetic attraction device as described in claim 5, characterized in that, The base is also provided with a slot communicating with the receiving cavity. The driving member includes a pressing part and a driving rack. The driving rack is connected to the first transmission member. The pressing part is located outside the receiving cavity and passes through the slot to be connected to the driving rack. The pressing part is configured to slide relative to the slot to drive the driving rack to move, so that the first transmission member rotates.

7. The magnetic attraction device as described in claim 1, characterized in that, Also includes: A connecting shaft is connected to the top plate and rotatably connected to the base, such that the top plate can rotate about the connecting shaft to tilt the second surface toward the first surface; Alternatively, the connecting shaft is connected to the base and rotatably connected to the top plate, such that the top plate can rotate about the connecting shaft to tilt the second surface toward the first surface.

8. The magnetic attraction device as described in claim 1, characterized in that, Also includes: The connecting shaft is provided with a first connecting hole in the base and a second connecting hole in the top plate. The connecting shaft passes through the first connecting hole and the second connecting hole, and the connecting shaft can rotate relative to the first connecting hole and / or the second connecting hole.

9. The magnetic attraction device as described in claim 1, characterized in that, The top plate is provided with a clearance hole. When the top plate is in the first state, the magnetic attractor passes through the clearance hole, and the second surface and the first surface are located on the same plane.

10. The magnetic attraction device as claimed in claim 1, characterized in that, The magnetic attraction assembly further includes a base plate, which is located on opposite sides of the base and the top plate. The base has a receiving cavity with an opening at one end, and the base plate is configured to cover the opening. The base has a magnetic attraction boss on the side away from the base plate, and the base has a third surface for contacting the side of the top plate away from the second surface. The first surface is located on the side of the magnetic attraction boss away from the third surface, and the magnetic attraction element is received in the receiving cavity at the end near the first surface.

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