Key module and electronic equipment

Abstract

The invention provides a key module and electronic equipment, and relates to the technical field of electronic equipment, the key module comprises a feedback member, a bearing member, a first magnetic conductive member, a second magnetic conductive member and a third magnetic conductive member, the feedback member and the bearing member are opposite and spaced in a first direction, the first magnetic conductive member and the second magnetic conductive member are both arranged between the feedback member and the bearing member, and the third magnetic conductive member is arranged between the feedback member and the bearing member. The first magnetic conductive member is connected to the feedback member, and the second magnetic conductive member is connected to the bearing member. The electromagnetic assembly is arranged on the side, facing the second magnetic conductive piece, of the first magnetic conductive piece, the electromagnetic assembly and the second magnetic conductive piece are spaced, the third magnetic conductive piece is located on the outer side of the electromagnetic assembly in the circumferential direction, and the third magnetic conductive piece is connected with one of the first magnetic conductive piece and the second magnetic conductive piece. When the electromagnetic assembly is in a power-on state, the electromagnetic assembly and the second magnetic conductive piece attract each other, the electromagnetic assembly can drive the feedback piece to bend and deform towards the side close to the bearing piece, and when the electromagnetic assembly is in a power-off state, the feedback piece can drive the electromagnetic assembly to move towards the side away from the bearing piece.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and in particular to a button module and an electronic device. Background Technology

[0002] Solid-state buttons are button devices implemented using solid-state electronic components. Compared to traditional mechanical buttons, solid-state buttons do not rely on physical contact or mechanical movement to sense button presses; instead, they detect and respond to button operations through changes in solid-state electronic components. Therefore, compared to traditional mechanical buttons, solid-state buttons offer higher reliability, longer lifespan, and faster response. For example, solid-state buttons can be applied to electronic devices to implement functions such as power buttons and volume up / down buttons.

[0003] In related technologies, due to the limitations of the structure and magnetic circuit of solid-state buttons, users cannot get good feedback when touching solid-state buttons, resulting in a poor user experience. Summary of the Invention

[0004] This application provides a button module and electronic device that can provide better feedback to the user and improve the user experience.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a button module, including a feedback element, a carrier element, a first magnetic conductive element, a second magnetic conductive element, and a third magnetic conductive element. The feedback element and the carrier element are opposite to and spaced apart in a first direction. The first and second magnetic conductive elements are both disposed between the feedback element and the carrier element, with the first magnetic conductive element connected to the feedback element and the second magnetic conductive element connected to the carrier element. An electromagnetic component is disposed on the side of the first magnetic conductive element facing the second magnetic conductive element and is spaced apart from the second magnetic conductive element. The third magnetic conductive element is located circumferentially outside the electromagnetic component and is connected to one of the first and second magnetic conductive elements. When the electromagnetic component is energized, the electromagnetic component and the second magnetic conductive element attract each other, and the electromagnetic component can cause the feedback element to bend and deform towards the side closer to the carrier element. When the electromagnetic component is de-energized, the feedback element can cause the electromagnetic component to move away from the carrier element.

[0007] In the button module of this application, the first, second, and third magnetic conductive elements are collectively arranged around the top, bottom, and sides of the electromagnetic component. The magnetic circuit formed by these three elements is relatively short, and their magnetic reluctance is much less than that of air, forming a path of minimum magnetic reluctance. According to the principle of minimum magnetic reluctance, magnetic lines of force always form a closed loop along the path of minimum magnetic reluctance. Thus, most of the magnetic lines of force of the electromagnetic component, starting from the N pole, enter the first magnetic conductive element along the second direction, then enter the third magnetic conductive element along the first direction, and then enter the second magnetic conductive element along the second direction before returning to the S pole of the electromagnetic component. In this way, most of the magnetic lines of force of the electromagnetic component can form a closed loop under the magnetic guidance of the first, second, and third magnetic conductive elements, reducing the magnetic lines of force escaping into the air, thus reducing magnetic leakage, lowering magnetic circuit losses, and improving the magnetic concentration effect. This increases the air gap magnetic flux between the electromagnetic component and the second magnetic conductive element, confining the magnetic field more concentrated inside the electromagnetic component, thereby improving the feedback force.

[0008] In one possible implementation of the first aspect, the button module further includes a connector, a feedback element, and a carrier element connected together. The feedback element, the carrier element, and the connector define a first space, thereby forming the button module into a single part unit. This facilitates the later disassembly and maintenance of the button module.

[0009] In one possible implementation of the first aspect, the key module further includes a keycap, which is disposed on the feedback element and at least a portion of the keycap is located on the side of the feedback element opposite to the carrier element. In this case, the user can receive feedback by feeling an instantaneous vibration through his finger on the keycap.

[0010] In one possible implementation of the first aspect, the keycap includes a first connecting arm and a second connecting arm connected to a feedback element. A third magnetically conductive element, with its orthographic projection on a first reference surface, is located between the orthographic projections of the first and second connecting arms on the first reference surface, and the first reference surface is perpendicular to a first direction. This allows the third magnetically conductive element to concentrate magnetic lines of force in the area directly opposite the first and second connecting arms. Consequently, the electromagnetic force generated by the electromagnetic component is concentrated between the first and second connecting arms, allowing the user to obtain a larger feedback force through the concentrated touch arm, thus preventing magnetic force dispersion.

[0011] In one possible implementation of the first aspect, the first magnetic conductive element can also be integrally formed with the feedback element. For example, a protruding structure can be formed on the feedback element at a position directly opposite the electromagnetic component in the first direction to form the first magnetic conductive element. In this way, the feedback element can also form a magnetic conductive structure of the same material as the first magnetic conductive element, so as to realize the mutual attraction between the feedback element and the second magnetic conductive element, thereby improving the electromagnetic force.

[0012] In one possible implementation of the first aspect, the second magnetic conductive element can be integrally formed with the third magnetic conductive element. That is, the second and third magnetic conductive elements are directly formed through a single manufacturing process. The connection between the second and third magnetic conductive elements is completed at the same time as the second magnetic conductive element is formed, without the need for a secondary manufacturing process to form the connection between the second and third magnetic conductive elements. In this way, gaps at the connection position of the second and third magnetic conductive elements are avoided, which could lead to magnetic leakage.

[0013] In one possible implementation of the first aspect, the orthographic projection of the first magnetically conductive element onto the first reference plane completely covers the orthographic projection of the electromagnetic assembly onto the first reference plane, where the first reference plane is perpendicular to the first direction. In this case, the first magnetically conductive element provides a fully covered magnetic focusing effect from one end of the electromagnetic assembly. Thus, when the electromagnetic assembly is energized, magnetic field lines originating from any position of the N pole of the electromagnetic assembly can be distributed along the first magnetically conductive element, avoiding magnetic leakage on one side of the first magnetically conductive element.

[0014] In one possible implementation of the first aspect, the orthographic projection of the second magnetic conductor on the first reference plane completely covers the orthographic projection of the electromagnetic component on the first reference plane, and the first reference plane is perpendicular to the first direction. When the second magnetic conductor provides a full-coverage magnetic focusing effect from the other end of the electromagnetic component, for example, when the electromagnetic component is energized, the second magnetic conductor gathers as many magnetic lines of force as possible to return them to the S pole of the electromagnetic component, avoiding magnetic leakage on one side of the first magnetic conductor.

[0015] In one possible implementation of the first aspect, the third magnetic element is connected to the first magnetic element, and in the first direction, the end of the third magnetic element away from the first magnetic element is flush with one end of the electromagnetic component.

[0016] In one possible implementation of the first aspect, a third magnetic conductor is connected to a first magnetic conductor. In a first direction, the end of the third magnetic conductor away from the first magnetic conductor protrudes towards the second magnetic conductor relative to the electromagnetic assembly. Thus, the orthographic projection of the third magnetic conductor on the second reference plane completely covers the orthographic projection of the electromagnetic assembly on the second reference plane. The second reference plane is perpendicular to the second direction, allowing the third magnetic conductor to completely cover the electromagnetic assembly in the first direction. This enables the third magnetic conductor to provide an all-around magnetic focusing effect from the outer periphery of the electromagnetic assembly, preventing magnetic leakage from the outer periphery of the electromagnetic assembly.

[0017] In one possible implementation of the first aspect, the orthographic projection of the third magnetic component on the first reference plane overlaps with the orthographic projection of the second magnetic component on the first reference plane. In this case, the third magnetic component is partially aligned with the second magnetic component in the first direction, and when the electromagnetic assembly is de-energized, the third magnetic component and the second magnetic component have a first gap in the first direction, and the electromagnetic assembly and the second magnetic component have a fourth gap. In this way, the size of the first gap can be reduced.

[0018] In one possible implementation of the first aspect, the size of the first gap is greater than or equal to 0.15 mm and less than or equal to 0.2 mm, so as to ensure that the movement of the third magnetic conductor is not affected while minimizing R1 as much as possible, where R1 is the air magnetic resistance of the first gap.

[0019] In one possible implementation of the first aspect, the size of the fourth gap can be greater than or equal to 0.15 mm and less than or equal to 0.2 mm, so as to minimize R2 as much as possible without affecting the movement of the electromagnetic components, where R2 is the air magnetic resistance of the fourth gap.

[0020] In one possible implementation of the first aspect, the third magnetic element is connected to the first magnetic element, and the orthographic projection of the third magnetic element on the first reference surface is completely offset from the orthographic projection of the second magnetic element on the first reference surface. The orthographic projection of the third magnetic element on the first reference surface is located circumferentially outside the orthographic projection of the second magnetic element on the first reference surface. In this way, the excessive thickness of the third and second magnetic elements in the first direction can be avoided from affecting the movement of the electromagnetic component, ensuring the deformation degree of the feedback element and improving the feedback force.

[0021] In one possible implementation of the first aspect, the third magnetic component is connected to the first magnetic component. The carrier has a first clearance groove with a first opening and a bottom wall. The first opening is formed on the surface of the carrier facing the feedback component. When the electromagnetic component is de-energized, the third magnetic component is opposite and spaced apart from the first bottom wall. Thus, when the electromagnetic component is energized, the third magnetic component can be driven from the first opening into the first clearance groove and move within it. It is understood that the maximum position the third magnetic component can move to is the position where it abuts against the bottom wall of the first groove, or the position where the electromagnetic component abuts against the second magnetic component.

[0022] In one possible implementation of the first aspect, when the electromagnetic component is de-energized, a portion of the third magnetically conductive element is located circumferentially outside the second magnetically conductive element. The third magnetically conductive element has a first portion, a second portion, and a third portion in a first direction. The first portion is located circumferentially outside the first outer peripheral wall of the electromagnetic component, the second portion is located circumferentially outside the fourth gap between the electromagnetic component and the second magnetically conductive element, and the third portion is located circumferentially outside the second magnetically conductive element. This eliminates the gap between the third and second magnetically conductive elements in the first direction, naturally eliminating magnetic resistance. In this case, R1 is 0, and the total magnetic resistance R = R2, achieving a significant reduction in magnetic resistance and improving the feedback force.

[0023] In one possible implementation of the first aspect, the distance between the surface of the third magnetic element facing the electromagnetic assembly and the outer peripheral wall of the second magnetic element is less than or equal to 0.05 mm. That is, there is a sixth gap between the first side and the outer peripheral wall of the second magnetic element, the size of which is less than or equal to 0.05 mm. This ensures that the distance between the third magnetic element and the second magnetic element in the second direction is small enough to reduce the magnetic resistance formed by the gap between the third magnetic element and the second magnetic element and reduce magnetic leakage.

[0024] In one possible implementation of the first aspect, when the electromagnetic component is in a de-energized state, there is a second gap between the third magnetic conductor and the bottom wall of the first slot. The size of the second gap may be greater than or equal to 0.15 mm and less than or equal to 0.2 mm, so as to ensure that the movement of the third magnetic conductor is not affected while minimizing R1 as much as possible.

[0025] In one possible implementation of the first aspect, the surface of the third magnetic conductor facing the electromagnetic component has a third gap with the outer peripheral wall of the electromagnetic component. That is, in the second direction, a third gap is formed between the first side and the first outer peripheral wall of the electromagnetic component. The size of the third gap in the second direction is greater than 0 and less than or equal to 0.4 mm. This can shorten the magnetic circuit length of the entire closed loop and make the third magnetic conductor as close as possible to the electromagnetic component, thereby improving the magnetic focusing effect.

[0026] In one possible implementation of the first aspect, the first magnetic conductive component and the third magnetic conductive component are integrally formed. That is, the first magnetic conductive component and the third magnetic conductive component are directly formed through a single manufacturing process. The connection between the first magnetic conductive component and the third magnetic conductive component is completed at the same time as the first magnetic conductive component is formed, without the need to form the connection between the first magnetic conductive component and the third magnetic conductive component through another process. For example, the first magnetic conductive component and the third magnetic conductive component can be formed by CNC machining, powder metallurgy, casting integral forming and other processes. In this way, the phenomenon of magnetic leakage caused by gaps at the connection position of the first magnetic conductive component and the third magnetic conductive component is avoided.

[0027] In one possible implementation of the first aspect, the thickness of the first magnetically conductive element may be greater than or equal to 0.3 mm, that is, the dimension of the first magnetically conductive element in the first direction is greater than or equal to 0.3 mm. It is understood that magnetic reluctance is inversely proportional to the thickness of the first magnetically conductive element; the thicker the first magnetically conductive element, the smaller the magnetic reluctance it generates, and the greater the feedback force. Therefore, by appropriately increasing the thickness of the first magnetically conductive element, the electromagnetic force is enhanced.

[0028] In one possible implementation of the first aspect, the thickness of the third magnetic conductor may also be greater than or equal to 0.3 mm. For example, the first and second magnetic conductors may be connected to form a shielding frame with a thickness greater than or equal to 0.3 mm that covers the electromagnetic component for magnetization.

[0029] In one possible implementation of the first aspect, the thickness of the second magnetic conductor may be less than or equal to 0.2 mm. For example, in an embodiment where the gap below the third magnetic conductor is eliminated, the magnetic flux is concentrated at the fourth gap between the electromagnetic component and the second magnetic conductor. In this case, the thickness of the second magnetic conductor can be made as small as possible to achieve saturation of the magnetic flux in the fourth gap and increase the magnitude of the feedback force.

[0030] In one possible implementation of the first aspect, the button module further includes a first elastic feedback part, which can elastically deform along a first direction. The first elastic feedback part is disposed on a third magnetic conductive element. When the electromagnetic component is energized, the third magnetic conductive element can drive the first elastic feedback part to move, so that the first elastic feedback part generates compression deformation. Thus, when the electromagnetic component switches to the de-energized state, the first elastic feedback part releases elastic restoring force, driving the feedback element to move away from the support element. At the same time, under the action of the electromagnetic force of the electromagnetic component, the feedback element is subjected to a dual force, thereby improving the feedback effect.

[0031] In one possible implementation of the first aspect, the carrier has a first clearance groove providing deformation space for the first elastic feedback section. The first elastic feedback section is disposed on a third magnetically conductive member. When the electromagnetic component is energized, the third magnetically conductive member can drive the first elastic feedback section to move until the first elastic feedback section abuts against the bottom wall of the first clearance groove. Thus, when the electromagnetic component switches to an de-energized state, the first elastic feedback section releases its elastic restoring force, driving the feedback section to move away from the carrier. Simultaneously, under the electromagnetic force of the electromagnetic component, the feedback section is subjected to a dual force, thereby improving the feedback effect.

[0032] In one possible implementation of the first aspect, the button module may further include a second elastic feedback section, which can elastically deform along a first direction. The second elastic feedback section is provided between the first connecting arm and the feedback element, and between the second connecting arm and the feedback element. When the user presses the keycap, the first connecting arm and the second connecting arm move and press the second elastic feedback section, causing the second elastic feedback section to undergo compression deformation and accumulate elastic restoring force. When the user's pressing force disappears, the second elastic feedback section releases the elastic restoring force, thereby providing feedback force to the user.

[0033] In one possible implementation of the first aspect, both the first connecting arm and the second connecting arm extend into the first space through the feedback member. A second elastic feedback portion is provided at the end of the first connecting arm facing the support member and at the end of the second connecting arm facing the support member. Thus, when the user presses the keycap, the first and second connecting arms move, causing the second elastic feedback portion to move closer to the support member. Simultaneously, the electromagnetic component switches to an energized state and drives the feedback member to move closer to the support member until the second elastic feedback portion undergoes compressive deformation and accumulates elastic restoring force. When the second elastic feedback portion releases its elastic restoring force, it drives the feedback member to move away from the support member. Simultaneously, under the electromagnetic force of the electromagnetic component, the feedback member is subjected to a dual force, thereby enhancing the feedback effect.

[0034] In one possible implementation of the first aspect, the first bottom wall and the surface of the second magnetic component facing the first bottom wall are parallel, so that the gap below the electromagnetic component, i.e. the fourth gap, is uniform. This allows the electromagnetic component to provide the same electromagnetic force at different positions, avoids large deviations in the size of the fourth gap, thereby improving the consistency of the electromagnetic force and providing better feedback to the user.

[0035] Secondly, this application provides a button module, including a feedback element, a carrier element, a support component, a second magnetic conductive element, an electromagnetic component, and an elastic component. The feedback element and the carrier element are opposite to and spaced apart in a first direction. The support component is disposed between the feedback element and the carrier element and connected to the feedback element. The support component has a second space, and the second magnetic conductive element, the electromagnetic component, and the elastic component are all disposed in the second space. The electromagnetic component is connected to the support component and is spaced apart from the second magnetic conductive element in the first direction. The elastic component is elastically connected between the support component and the electromagnetic component. The electromagnetic component has an energized state and an de-energized state. When the electromagnetic component is energized, the second magnetic conductive element and the electromagnetic component attract each other, and the electromagnetic component can move relative to the support component towards the second magnetic conductive element, so that the elastic component accumulates an elastic restoring force to drive the electromagnetic component to move towards the side closer to the feedback element.

[0036] In this application, the button module, including the support component, electromagnetic component, second magnetic conductor, and elastic component, forms a unified structure. When the support component moves, the electromagnetic component, second magnetic conductor, and elastic component all move synchronously with it. That is, when the support component moves or deforms, there is no relative movement between the electromagnetic component and the second magnetic conductor; they only move synchronously. Thus, during the connection of the support component to the feedback component, and the connection of the feedback component to the connecting component, even if the feedback component is affected and undergoes local deformation or movement, the position of the electromagnetic component relative to the second magnetic conductor will not change. This ensures that the gap between the electromagnetic component and the second magnetic conductor remains consistent, reducing uneven gaps caused by assembly and other factors.

[0037] In one possible implementation of the second aspect, the elastic component includes at least one first elastic element, and the support component includes a second outer peripheral wall located around the periphery of the electromagnetic component. The first elastic element is connected between the electromagnetic component and the second outer peripheral wall. Thus, when the electromagnetic component and the second magnetically conductive element attract each other, the electromagnetic component moves towards the side closer to the second magnetically conductive element, causing the second connecting end to move towards the side closer to the first magnetically conductive element. This causes the first elastic element to undergo an oscillating deformation in the first direction and accumulate elastic restoring force. When the electromagnetic component is de-energized, the first elastic element releases the elastic restoring force and causes the electromagnetic component to move towards the side closer to the second top wall and the feedback element, allowing the electromagnetic component to impact the second top wall and the feedback element, providing feedback to the user.

[0038] In one possible implementation of the second aspect, the elastic component includes at least one second elastic element connected between the electromagnetic component and the second magnetically conductive element. When the electromagnetic component and the second magnetically conductive element attract each other, the electromagnetic component moves towards the side closer to the second magnetically conductive element and compresses the second elastic element, thereby causing the first elastic element to undergo compressive deformation in a first direction and accumulate elastic restoring force. When the electromagnetic component is de-energized, the first elastic element releases the elastic restoring force, causing the electromagnetic component to move towards the side closer to the second top wall and the feedback element, so that the electromagnetic component can impact the second top wall and the feedback element.

[0039] In one possible implementation of the second aspect, the support component has a second top wall and a second bottom wall disposed opposite to each other along a first direction. An electromagnetic component is connected to the second top wall, and a second magnetic conductor is connected to the second bottom wall. The second top wall is a permanent magnet, which is inherently magnetic and its magnetism is not altered by the magnetic field of the electromagnetic component. In this way, the second top wall and the second magnetic conductor can also attract each other, causing the second top wall to cause the feedback component to bend towards the side closer to the support component, thereby increasing the degree of deformation of the feedback component and enhancing the feedback force.

[0040] In one possible implementation of the second aspect, the support component has a second top wall and a second bottom wall disposed opposite to each other along a first direction. An electromagnetic component is connected to the second top wall, and a second magnetic conductor is connected to the second bottom wall. The second top wall is a permanent magnet. When the electromagnetic component is energized, the second magnetic conductor can also attract each other, thereby increasing the deformation degree of the elastic component and increasing the feedback force.

[0041] In one possible implementation of the second aspect, the support component has a second top wall and a second bottom wall disposed opposite to each other along a first direction, an electromagnetic component is connected to the second top wall, a second magnetic conductor is connected to the second bottom wall, and the second top wall and the second bottom wall are permanent magnets, thereby increasing the deformation degree of the elastic component and increasing the feedback force.

[0042] Thirdly, this application provides an electronic device, including a housing and a button module as described in any of the above embodiments. When the button module is a solid-state button, after receiving the user's physical pressing signal, the button module can provide the user with feedback force that can be felt by the user's fingers, thereby improving the user experience.

[0043] In one possible implementation of the third aspect, the housing includes a frame, and a button module is disposed on the frame to form a power button, volume up and down buttons, etc. Attached Figure Description

[0044] Figure 1 A perspective view of an electronic device provided according to some embodiments of this application;

[0045] Figure 2 According to Figure 1 An exploded view of the electronic device shown;

[0046] Figure 3 According to Figure 1 A schematic diagram of the cross-sectional structure of the electronic device shown at line AA;

[0047] Figure 4 A cross-sectional structural diagram of a solid-state button module provided in some embodiments of this application;

[0048] Figure 5 for Figure 4 A schematic diagram of the deformed feedback element of the button module in the middle;

[0049] Figure 6a for Figure 4 A front view of the magnetic field lines distribution after the electromagnetic component is energized;

[0050] Figure 6b for Figure 4 A side view of the magnetic field lines distribution after the electromagnetic component is energized;

[0051] Figure 7 This is a cross-sectional perspective structural diagram of a button module provided in some embodiments of this application;

[0052] Figure 8 for Figure 7 A schematic diagram of a cross-sectional planar structure of the button module shown.

[0053] Figure 9 This is a schematic diagram of the structure of an electromagnetic component at a certain moment when it is energized.

[0054] Figure 10 for Figure 8 A front view of the magnetic field lines distribution after the electromagnetic component is energized;

[0055] Figure 11a for Figure 8 A side view of the magnetic field lines distribution after the electromagnetic components are energized;

[0056] Figure 11b This is a schematic diagram of the structure after the first and third magnetic conductive components are integrally formed.

[0057] Figure 12a for Figure 7 Another cross-sectional planar structural diagram of the button module shown.

[0058] Figure 12b This is a schematic diagram of the structure after the second and third magnetic conductive components are integrally formed.

[0059] Figure 13 for Figure 8 The diagram shows the projection relationship between the first and second magnetic conductive components and the electromagnetic assembly on the first reference plane.

[0060] Figure 14a for Figure 7 Another cross-sectional planar structure diagram of the button module shown;

[0061] Figure 14b for Figure 14a A schematic diagram of the projection relationship between the third magnetic conductor and the second magnetic conductor on the first reference plane;

[0062] Figure 15 This is a circuit diagram of the equivalent magnetic circuit of reluctance and magnetomotive force.

[0063] Figure 16a for Figure 7 Another cross-sectional planar structure diagram of the button module shown;

[0064] Figure 16b for Figure 16a A schematic diagram of the projection relationship between the third magnetic conductor and the second magnetic conductor on the first reference plane;

[0065] Figure 17 for Figure 7 Another cross-sectional planar structure diagram of the button module shown;

[0066] Figure 18 for Figure 17 Another cross-sectional planar structure diagram of the button module shown;

[0067] Figure 19a for Figure 18 A cross-sectional planar structural diagram of the electromagnetic components of the button module when it is energized.

[0068] Figure 19b for Figure 19a A magnified structural diagram at point B in the middle;

[0069] Figure 20 A schematic cross-sectional planar structure diagram of a button module including a first elastic feedback section provided in some embodiments of this application;

[0070] Figure 21 A cross-sectional planar structural schematic diagram of a button module including a first elastic feedback section provided in some embodiments of this application;

[0071] Figure 22 A cross-sectional planar structural diagram of a button module including a second elastic feedback section provided in some embodiments of this application;

[0072] Figure 23a A cross-sectional planar structural schematic of a button module including a second elastic feedback section provided in some embodiments of this application;

[0073] Figure 23b for Figure 23a A schematic diagram of the deformed feedback element of the button module shown.

[0074] Figure 24 A cross-sectional planar structural diagram of a button module including a support component provided in some embodiments of this application;

[0075] Figure 25 for Figure 24 A schematic diagram of the electromagnetic component at a certain moment when it is energized;

[0076] Figure 26 A cross-sectional planar structural diagram of a button module including a support component provided in some embodiments of this application;

[0077] Figure 27 This is a cross-sectional planar structural diagram of a button module including a support component and a second elastic feedback section, provided in some embodiments of this application.

[0078] Figure label:

[0079] 1000. Electronic devices;

[0080] 100. Screen; 110. Light-transmitting cover; 120. Display screen;

[0081] 200. Housing; 210. Back cover; 220. Mid-frame; 221. Frame; 222. Mid-plate; 230. Button slot;

[0082] 300. Circuit board assembly;

[0083] 400. Button module;

[0084] 410. Keycap; 411. Touch arm; 412. First connecting arm; 413. Second connecting arm;

[0085] 420. Feedback component; 421. First surface; 422. Second surface;

[0086] 430, Frame; 431, Bearing member; 431a, Third surface; 431b, Fourth surface; 432, Connector; 433, Actuator; 434, First clearance groove; 434a, First opening; 434b, Bottom wall of the first groove; 434c, Side wall of the first groove; 434d, Side wall of the second groove;

[0087] 440. Electromagnetic component; 441. First top wall; 442. First bottom wall; 443. First outer peripheral wall; Q1. First space;

[0088] 451. First magnetic conductive element; 452. Second magnetic conductive element; 453. Third magnetic conductive element; 4531. First side surface; 4532. Second side surface;

[0089] 461. First elastic feedback unit; 462. Second elastic feedback unit;

[0090] 470, Supporting component; 471, Second top wall; 472, Second bottom wall; 473, Second outer peripheral wall; Q2, Second space;

[0091] 480. Elastic component; 481. First elastic element; 482. Second elastic element;

[0092] 500, battery;

[0093] L1, first direction; L2, second direction; M, first reference plane; R1, first magnetoresistive force; R2, second magnetoresistive force. Detailed Implementation

[0094] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0095] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0096] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0097] In the description of the embodiments of this application, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after it are in an "or" relationship.

[0098] In the embodiments of this application, directional terms such as "outer" may be defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation in which the components are placed in the accompanying drawings.

[0099] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0100] In the description of embodiments of this application, the terms "vertical" and "parallel" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximately parallelism, wherein the acceptable deviation range for approximately parallelism may be, for example, within 5°, 8°, or 10°; "vertical" includes absolute verticalism and approximately verticalism, wherein the acceptable deviation range for approximately verticalism may also be, for example, within 5°, 8°, or 10°.

[0101] This application provides an electronic device. This electronic device includes, but is not limited to, mobile phones, tablet computers, laptop computers, personal digital assistants (PDAs), personal computers, in-vehicle devices, wearable devices, portable music players, radios, touchpads, and styluses. Wearable devices include, but are not limited to, smart bracelets, smartwatches, smart head-mounted displays, and smart glasses.

[0102] Please see Figure 1 and Figure 2 , Figure 1This is a perspective view of an electronic device 1000 provided according to some embodiments of this application. Figure 2 According to Figure 1 The diagram shows an exploded view of the electronic device 1000. The electronic device 1000 may include a screen 100, a housing 200, a circuit board assembly 300, a button module 400, and a battery 500. In this embodiment, a candybar mobile phone is used as an example for illustration; this should not be construed as a limitation on the embodiments of this application.

[0103] Understandable, Figure 1 and Figure 2 The electronic device 1000 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 and Figure 2 There are limitations. In some other examples, the electronic device 1000 may not include the screen 100. Furthermore, for ease of description below, an XYZ coordinate system is established, defining the width direction of the electronic device 1000 as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system of the electronic device 1000 can be flexibly set according to actual needs, and no specific limitations are imposed here.

[0104] Screen 100 is used to display images, videos, etc. Please refer to [link / reference]. Figure 2 The screen 100 includes a light-transmitting cover 110 and a display screen 120. The light-transmitting cover 110 and the display screen 120 are stacked together. The light-transmitting cover 110 is mainly used to protect the display screen 120 and prevent dust. The material of the light-transmitting cover 110 includes, but is not limited to, glass. The display screen 120 can be a flexible display screen or a rigid display screen.

[0105] The housing 200 is used to protect the components inside the electronic device 1000. See also... Figure 1 and combined Figure 2 The housing 200 includes a back cover 210 and a frame 221. The back cover 210 is located on the side of the display screen 120 opposite to the light-transmitting cover 110, and the back cover 210, the light-transmitting cover 110, and the display screen 120 are stacked on top of each other. The back cover 210 and the light-transmitting cover 110 are disposed on opposite sides of the frame 221. The light-transmitting cover 110, the back cover 210, and the frame 221 enclose an internal housing space for the electronic device 1000. This internal housing space accommodates the display screen 120, the circuit board assembly 300, and the battery 500.

[0106] In some embodiments, please refer to Figure 2The housing 200 also includes a middle plate 222. The middle plate 222 can be fixed to the inner surface of the frame 221. The middle plate 222 serves as the structural "skeleton" of the electronic device 1000, and the circuit board assembly 300, battery 500, etc. can be fixed to the middle plate 222. The structure formed by the frame 221 and the middle plate 222 can also be referred to as the middle frame 220. In some other embodiments, the electronic device 1000 may not include the middle plate 222.

[0107] The button module 400 can be disposed on the side or top edge of the frame 221 to serve as a side button or a top button. There can be one or more button modules 400. For example, the button module 400 can form the power button, volume up / down buttons, etc., of the electronic device 1000. The button module 400 is used to input commands and is electrically connected to the circuit board assembly 300, which is electrically connected to the battery 500. The circuit board assembly 300 is used to control the internal functional devices of the electronic device 1000 according to the commands input by the button module 400. Figure 1 The example given is merely an illustration of two button modules 400 arranged alternately along the Y-axis as side buttons; this should not be considered a specific limitation on this application. Figure 1 In the illustrated embodiment, one of the two button modules 400 is a volume button, and the other button module 400 is a power button.

[0108] In some embodiments, the button module 400 is a solid-state button, which may be equipped with a sensor, such as a pressure simulation sensor. The pressure simulation sensor has a corresponding touch sensing layer, which is disposed on the surface of the solid-state button for user touch. The user can input physical signals to simulate the pressing action of a traditional mechanical button by lightly pressing, heavily pressing, touching, or sliding. The pressure simulation sensor detects the pressure change and outputs a corresponding voltage signal. The circuit board assembly 300 executes the relevant command control. In this way, the user can perform operations such as volume adjustment, screen locking, or waking up the display screen 120 on the electronic device 1000 by triggering the button module 400.

[0109] In some embodiments, when the button module 400 is a solid-state button, after receiving the user's physical pressing signal, the button module 400 can provide the user with feedback force that can be felt by the user's fingers. The feedback force forms a vibration, thereby providing feedback to the user that the pressing action has been effective.

[0110] Please refer to the following: Figure 2 and Figure 3 , Figure 3 According to Figure 1The illustrated cross-sectional view of the electronic device 1000 at line AA shows that, in some embodiments, the housing 200 has a button slot 230, and the button module 400 is disposed within the button slot 230 and partially flush with the outer surface of the frame 221 to form a pressable portion that can be directly operated by the user. It is understood that a touch-sensitive layer may be formed on the outer surface of the button module 400. In some embodiments, the button slot 230 may be formed on one of the long sides of the frame 221 (i.e., the side parallel to the Y-axis direction). In other examples, the mounting slot may be formed on one of the short sides of the frame 221 (i.e., in the direction parallel to the X-axis). In other examples, the mounting slot may also be formed on the back cover 210.

[0111] Please see Figure 4 , Figure 4 The key module 400 provided in some embodiments of this application is a cross-sectional structural diagram of a solid-state key. The key module 400 includes a keycap 410, a feedback element 420, a frame 430, a sensor (not shown in the figure), and an electromagnetic component 440. The keycap 410 is disposed on the feedback element 420. A first space Q1 can be defined between the feedback element 420 and the frame 430. The sensor and the electromagnetic component 440 are disposed within the first space Q1.

[0112] When assembling with the housing 200 of the electronic device 1000, the pre-assembled button module 400 can be directly connected to the housing 200, thus fixing the frame 430 to the housing 200, which facilitates the assembly and subsequent maintenance of the button module 400. Specifically, the electromagnetic component 440 can be an electromagnetic coil, which includes an iron core and a coil wound around the outer periphery of the iron core. The electromagnetic component 440 is connected to the feedback component 420, and the frame 430 can be made of a magnetically conductive material, for example, the frame 430 can be made of iron.

[0113] The frame 430 includes an actuating member 433 disposed opposite to the feedback member 420 along a first direction L1, wherein the first direction L1 may be... Figure 1 In the X direction of the electronic device 1000, the feedback element 420 is fixedly disposed relative to the actuating element 433 (for example, the actuating element 433 can be fixed to the housing 200 of the electronic device 1000). Figure 4 The housing 200 of the electronic device 1000 (not shown) has at least a portion of the keycap 410 located on the side of the feedback member 420 opposite to the actuator 433, and the electromagnetic component 440 is spaced apart from the actuator 433 along a first direction L1.

[0114] In some embodiments, the feedback element 420 can be connected to the action element 433. For example, the button module 400 further includes a connector 432, which connects the feedback element 420 and the action element 433, thereby defining a first space Q1 between the feedback element 420, the action element 433, and the connector 432, thus forming the button module 400 as a single integral part. Specifically, in some embodiments, the connector 432 can be arranged in a ring shape on the outer edge of the action element 433, and the outer edge of the feedback element 420 is connected to the side of the action element 433 away from the action element 433, so that the middle part of the feedback element 420 is suspended to facilitate deformation under force. In other embodiments, there can be two connectors 432, which are spaced apart on both sides of the action element 433, and the two ends of the feedback element 420 can be fixed to the two connectors 432, thereby suspending the middle part of the feedback element 420.

[0115] In other embodiments, the feedback element 420 may not be connected to the action element 433. For example, the feedback element 420 may be connected to a certain position of the housing 200, and the action element 433 may be fixed to the housing 200, thereby fixing the positions of the feedback element 420 and the action element 433.

[0116] When the user touches the keycap 410, the sensor outputs a corresponding voltage signal to energize the electromagnetic component 440. The electromagnetic component 440 generates electromagnetic force, and at the same time, the actuator 433 forms a lower armature. The electromagnetic component 440 and the actuator 433 can attract each other under the action of electromagnetic force, so that the electromagnetic component 440 is attracted by the actuator 433 and moves along the first direction L1. The electromagnetic component 440 drives the feedback component 420 to bend and deform towards the side closer to the actuator 433.

[0117] Please see Figure 5 , Figure 5 for Figure 4 The schematic diagram shows the structure of the feedback element 420 after deformation. When the electromagnetic component 440 is de-energized, the feedback element 420 undergoes a reverse recovery deformation and moves to the side away from the frame 430. Figure 4 The position shown provides the user with a feedback force generated by the deformation elasticity of the feedback element 420. Therefore, it can be understood that the greater the electromagnetic force, the greater the degree of deformation of the feedback element 40, and the greater the feedback force. At this time, the user can feel an instantaneous vibration through their fingers on the keycap 410 and receive feedback.

[0118] In other embodiments, the button module 400 may also omit the keycap 410 and directly form a portion of the surface of the feedback element 420 as the exposed surface of the button module 400, allowing the user to directly touch the feedback element 420 and obtain feedback force.

[0119] Furthermore, the feedback element 420 can also be made of a magnetic material. When the electromagnetic component 440 is energized, the feedback element 420 forms an upper armature, thereby causing the feedback element 420 and the actuating element 433 to attract each other, so as to enhance the feedback force brought about by the feedback element 420 when it recovers its deformation.

[0120] When the electromagnetic component 440 is energized, N poles and S poles are formed at its two ends. Magnetic field lines always start from the N pole and eventually return to the S pole. Please refer to [link / reference]. Figure 6a and Figure 6b , Figure 6a for Figure 4 A front view of the magnetic field lines distribution after the electromagnetic component 440 is energized. Figure 6b for Figure 4 A side view of the magnetic field distribution after the electromagnetic component 440 is energized. Since the first space Q1 also needs to house sensors, the electromagnetic component 440, and other structures, the frame 430 needs to be large enough to accommodate the size of the first space Q1. For example, in the second direction L2 perpendicular to the first direction L1, a gap of approximately 1 cm needs to be formed between the electromagnetic component 440 and the frame 430 to ensure proper assembly. The second direction L2 can be the Y direction of the electronic device 1000. However, a large frame 430 results in a longer magnetic circuit and higher magnetic resistance. As the magnetic field lines extend along the frame 430, magnetic leakage is severe, causing a large amount of magnetic field lines to dissipate into the air. This reduces the air gap magnetic flux between the electromagnetic component 440 and the frame 430, thus reducing the feedback force. Even when the user is directly opposite the electromagnetic component 440, they cannot receive good vibration feedback, resulting in a poor user experience.

[0121] To improve the feedback of the button module 400 and ensure a better user experience, please refer to [link / reference needed]. Figure 7 , Figure 7 This is a cross-sectional perspective structural diagram of a button module 400 provided in some embodiments of this application. In the embodiments of this application, the button module 400 is a solid-state button. The button module 400 includes a feedback element 420 and a carrier element 431. The feedback element 420 and the carrier element 431 are opposite to and spaced apart in the first direction L1. The structure of the feedback element 420 in this embodiment can be compared with... Figure 4 The feedback element 420 in the illustrated embodiment has the same structure and size, and the carrier element 431 in this embodiment can be the same as... Figure 4 The structural size of the functional component 433 shown is the same.

[0122] Please continue reading. Figure 7The feedback element 420 has a first surface 421 and a second surface 422 disposed opposite to each other along a first direction L1. The carrier element 431 has a third surface 431a and a fourth surface 431b disposed opposite to each other along the first direction L1, with the second surface 422 and the third surface 431a facing each other. The button module 400 also includes a second magnetic conductive element 452 and an electromagnetic component 440. The second magnetic conductive element 452 is disposed between the feedback element 420 and the carrier element 431 and is connected to the carrier element 431. Specifically, the second magnetic conductive element 452 is connected to the third surface 431a of the carrier element 431, and the electromagnetic component 440 is disposed on the side of the second surface 422 facing the second magnetic conductive element 452.

[0123] The electromagnetic component 440 has an energized state and an de-energized state. In some embodiments, please refer to [reference needed]. Figure 8 , Figure 8 for Figure 7 The diagram shows a cross-sectional planar structure of the button module 400. In this case, the electromagnetic component 440 is in a de-energized state. Please refer to [link / reference]. Figure 9 , Figure 9 This is a structural diagram of the electromagnetic component 440 at a certain moment when it is in an energized state. It's important to understand that the energized state does not refer to a fixed position of the electromagnetic component 440 at a fixed time; rather, it represents the overall position of the electromagnetic component 440 at all moments after being energized. Similarly, the de-energized state does not refer to a fixed position of the electromagnetic component 440 at a fixed time; rather, it represents the overall position of the electromagnetic component 440 at all moments after being de-energized. The electromagnetic component 440 can switch from an energized state to a de-energized state, and vice versa.

[0124] When the electromagnetic component 440 is energized, current flows through it and a magnetic field is generated. The electromagnetic component 440 and the second magnetic conductor 452 attract each other. The electromagnetic component 440 drives the feedback component 420 connected to it to bend and deform towards the side closer to the support component 431. When the electromagnetic component 440 is de-energized, the feedback component 420 can drive the electromagnetic component 440 to move away from the support component 431, thereby providing feedback force to the user through its own deformation.

[0125] In some embodiments, please continue reading Figures 8 to 9The button module 400 further includes a first magnetic conductive element 451 and a third magnetic conductive element 453. The first magnetic conductive element 451 is connected to the feedback element 420. Specifically, the first magnetic conductive element 451 is connected to the second surface 422 of the feedback element 420. The electromagnetic component 440 is connected to the side of the first magnetic conductive element 451 facing the second magnetic conductive element 452. The third magnetic conductive element 453 is located on the circumferential outer side of the electromagnetic component 440, and the third magnetic conductive element 453 is connected to one of the first magnetic conductive element 451 and the second magnetic conductive element 452. Thus, in this embodiment, the button module 400 forms a structure in the first direction L1 in which the feedback element 420, the first magnetic conductive element 451, the electromagnetic component 440, the second magnetic conductive element 452, and the support element 431 are arranged in sequence, and the third magnetic conductive element 453 is located on the circumferential outer side of the electromagnetic component 440.

[0126] The electromagnetic component 440 in this embodiment can be connected with... Figure 4 The electromagnetic components 440 in the illustrated embodiments are the same, and for example, they can all be electromagnetic coils.

[0127] The electromagnetic component 440 has a first top wall 441 and a first bottom wall 442 disposed opposite to each other along a first direction L1, and a first outer peripheral wall 443 connecting the first top wall 441 and the bottom wall. The first top wall 441 is connected to a first magnetic conductor 451. The first outer peripheral wall 443 is circumferentially arranged around the first direction L1. When the electromagnetic component 440 is in the de-energized state, its first bottom wall 442 is spaced apart from the second magnetic conductor 452 along the first direction L1. In some embodiments, the first outer peripheral wall 443 may include one or more adjacent peripheral surfaces. For example, the peripheral surface may include one, in which case the electromagnetic component 440 is cylindrical or elliptical. The peripheral surface may also include four, in which case the electromagnetic component 440 is cuboid.

[0128] A second direction L2, a first reference plane, and a second reference plane are formed with the first direction L1 as the reference. The first reference plane is perpendicular to the first direction L1. Any direction parallel to the first reference plane is the second direction L2. The second reference plane is perpendicular to the second direction L2. It can be understood that one of the directions parallel to the second reference plane is the first direction L1. The first direction L1 can be... Figure 1 In the X direction of the electronic device 1000, the second direction L2 can be... Figure 1 The Y direction of the electronic device 1000.

[0129] The third magnetic conductive element 453 has a first side surface 4531 facing away from the first outer peripheral wall 443 and a second side surface 4532 facing the first outer peripheral wall 443. The third magnetic conductive element 453 being located circumferentially outside the electromagnetic assembly 440 means that, circumferentially, the second side surface 4532 is spaced apart from at least a portion of the first outer peripheral wall 443 along a second direction L2. This results in the orthographic projection of the third magnetic conductive element 453 onto the first reference surface being located outside the orthographic projection of the electromagnetic assembly 440 onto the first reference surface, and the orthographic projection of the third magnetic conductive element 453 onto the second reference surface partially or completely covering the orthographic projection of the electromagnetic assembly 440 onto the second reference surface. Exemplarily, in some embodiments, the third magnetic conductive element 453 can be integrally sleeved around the electromagnetic assembly 440 to form a closed annular structure, such as a hollow cylinder or a hollow prism. In other embodiments, the third magnetic conductor 453 may also include a plurality of sub-magnetic conductors spaced apart circumferentially along the electromagnetic assembly 440, the plurality of sub-magnetic conductors being disposed together on the circumferential outer side of the first outer peripheral wall 443 of the electromagnetic assembly 440.

[0130] The first magnetic conductive element 451, the second magnetic conductive element 452, and the third magnetic conductive element 453 are magnetically conductive structures. For example, the magnetically conductive structure can be made of iron, ferrite, or silicon steel, etc. (See reference...) Figure 10 and Figure 11a , Figure 10 for Figure 8 A front view of the magnetic field lines distribution after the electromagnetic component 440 is energized. Figure 11a for Figure 8 The side view of the magnetic field distribution of the electromagnetic component 440 after it is energized. For ease of explanation, the side of the electromagnetic component 440 closest to the feedback element 420 is taken as the N pole in the following text.

[0131] Since the first magnetic conductor 451, the second magnetic conductor 452, and the third magnetic conductor 453 are arranged together around the top, bottom, and sides of the electromagnetic assembly 440, and the magnetic circuit formed by the three is relatively short, and the magnetic reluctance of the first magnetic conductor 451, the second magnetic conductor 452, and the third magnetic conductor 453 is much smaller than that of air, forming a path of minimum magnetic reluctance, according to the principle of minimum magnetic reluctance, magnetic lines of force always form a closed loop along the path of minimum magnetic reluctance. Thus, most of the magnetic lines of force of the electromagnetic assembly 440, after starting from the N pole, enter the first magnetic conductor 451 along the second direction L2, then enter the third magnetic conductor 453 along the first direction L1, and then enter the second magnetic conductor 452 along the second direction L2 before returning to the S pole of the electromagnetic assembly 440. In this way, most of the magnetic field lines of the electromagnetic component 440 can form a closed loop under the magnetic guidance of the first magnetic guide 451, the second magnetic guide 452 and the third magnetic guide 453, which reduces the magnetic field lines that escape into the air, thus reducing magnetic leakage, reducing magnetic circuit loss, and improving the magnetic concentration effect. This increases the air gap magnetic flux between the electromagnetic component 440 and the second magnetic guide 452, and confines the magnetic field more concentrated inside the electromagnetic component 440, thereby improving the feedback force.

[0132] In this application Figures 7 to 11a The electromagnetic component 440 in the illustrated embodiment, even when... Figure 4 The electromagnetic components 440 in the illustrated embodiments adopt the same structure (for example, when the electromagnetic component 440 is an electromagnetic coil, the number of turns and the size of the iron core are the same) and are supplied with the same current, and can still provide a high feedback force, so that users can obtain a better feedback effect, obvious vibration, and enhanced experience.

[0133] In some embodiments, please refer to Figure 10 The key module 400 includes a keycap 410, which includes a first connecting arm 412 and a second connecting arm 413 connected to the feedback element 420. The keycap 410 also includes a touch arm 411 connected between the first connecting arm 412 and the second connecting arm 413 and located away from the feedback element 420. The orthographic projection of the third magnetic conductive element 453 on the first reference surface is located between the orthographic projections of the first connecting arm 412 and the second connecting arm 413 on the first reference surface. This allows the third magnetic conductive element 453 to concentrate magnetic lines of force in the area directly opposite the first connecting arm 412 and the second connecting arm 413. In this way, the electromagnetic force generated by the electromagnetic component 440 is concentrated between the first connecting arm 412 and the second connecting arm 413, allowing the user to obtain a larger feedback force through the touch arm 411 and avoiding magnetic force dispersion.

[0134] It is understood that the feedback element 420 and the carrier element 431 in this embodiment can both be made of non-magnetic materials such as stainless steel. The carrier element 431 is fixed to the housing 200 of the electronic device 1000. The feedback element 420 can be connected to the carrier element 431, or it can be connected to other structures besides the carrier element 431, such as also being connected to the housing 200 of the electronic device 1000. In some embodiments, the button module 400 in this embodiment may further include... Figure 4 In the embodiment, the connector 432 and the feedback component 420 are connected to the carrier component 431 through the connector 432, and the three define a first space Q1. The first magnetic conductor 451, the second magnetic conductor 452 and the third magnetic conductor 453 and the electromagnetic component 440 are all located in the first space Q1. This can also shorten the distance between the second magnetic conductor 452 and the third magnetic conductor 453 and the electromagnetic component 440, shorten the magnetic circuit length, and thus reduce magnetic circuit loss.

[0135] exist Figures 8 to 11a In the embodiment shown, the third magnetic conductive element 453 and the first magnetic conductive element 451 are connected. When the electromagnetic component 440 is in a de-energized state, the third magnetic conductive element 453 and the first magnetic conductive element 451 form an integral structure that is spaced apart from the second magnetic conductive element 452. When the electromagnetic component 440 is in a energized state, the feedback element 420, the first magnetic conductive element 451, the third magnetic conductive element 453 and the electromagnetic component 440 all move along the first direction L1 toward the side closer to the second magnetic conductive element 452.

[0136] In some embodiments, the first magnetic conductive element 451 may be integrally formed with the third magnetic conductive element 453. See also... Figure 11b , Figure 11b This is a schematic diagram of the structure after the first magnetic conductive component 451 and the third magnetic conductive component 453 are integrally formed. That is, the first magnetic conductive component 451 and the third magnetic conductive component 453 are directly formed through a single manufacturing process. The connection between the first magnetic conductive component 451 and the third magnetic conductive component 453 is completed at the same time as the first magnetic conductive component 451 is formed, without the need to form the connection between the first magnetic conductive component 451 and the third magnetic conductive component 453 through another process. For example, the first magnetic conductive component 451 and the third magnetic conductive component 453 can be integrally formed through CNC machining such as computer digital control precision machining (CNC process), powder metallurgy such as metal injection molding technology (MIM) and powder metallurgy (PM), or casting integral forming such as mold casting. In this way, gaps at the connection position of the first magnetic conductive component 451 and the third magnetic conductive component 453 are avoided, which may cause magnetic leakage.

[0137] In other embodiments, the first magnetic conductive element 451 may also be integrally formed with the feedback element 420. For example, a protruding structure may be formed on the feedback element 420 at a position directly opposite to the electromagnetic component 440 in the first direction L1 to form the first magnetic conductive element 451. In this way, the feedback element 420 may also form a magnetic conductive structure of the same material as the first magnetic conductive element 451, so as to realize the mutual attraction between the feedback element 420 and the second magnetic conductive element 452, thereby improving the electromagnetic force.

[0138] In other embodiments, please refer to Figure 12a , Figure 12a for Figure 7 The diagram shows another cross-sectional planar structure of the button module 400. In this case, the third magnetic conductive element 453 and the second magnetic conductive element 452 are connected in the button module 400. When the electromagnetic component 440 is in the de-energized state, the third magnetic conductive element 453 and the second magnetic conductive element 452 form a whole and are spaced apart from the first magnetic conductive element 451 in the first direction L1. When the electromagnetic component 440 is in the energized state, the feedback element 420, the first magnetic conductive element 451 and the electromagnetic component 440 all move towards the side closer to the second magnetic conductive element 452 along the first direction L1, and the first magnetic conductive element 451 and the third magnetic conductive element 453 gradually approach each other.

[0139] In some embodiments, the second magnetic conductive element 452 may be integrally formed with the third magnetic conductive element 453. (See also...) Figure 12b , Figure 12b This is a schematic diagram of the structure after the second magnetic conductive element 452 and the third magnetic conductive element 453 are integrally formed. Similarly, the second magnetic conductive element 452 and the third magnetic conductive element 453 are directly formed through a single manufacturing process. The connection between the second magnetic conductive element 452 and the third magnetic conductive element 453 is completed at the same time as the second magnetic conductive element 452 is formed, without the need for a secondary manufacturing process to form the connection between the second magnetic conductive element 452 and the third magnetic conductive element 453. This avoids the formation of gaps at the connection position between the second magnetic conductive element 452 and the third magnetic conductive element 453, which could lead to magnetic leakage.

[0140] It is understandable that when the third magnetic conductive element 453 is connected to either the first magnetic conductive element 451 or the second magnetic conductive element 452, a closed magnetic conductive circuit can be formed between the first magnetic conductive element 451, the second magnetic conductive element 452 and the third magnetic conductive element 453, thereby providing a magnetic focusing effect and enhancing the feedback force.

[0141] For ease of explanation, the following description will use the embodiment where the first magnetic conductor 451 and the third magnetic conductor 453 are connected. It can be understood that the structure after the second magnetic conductor 452 and the first magnetic conductor 451 are connected is the same as the embodiment where the first magnetic conductor 451 and the third magnetic conductor 453 are connected.

[0142] In some embodiments, please refer to Figure 13 , Figure 13 for Figure 8 The diagram shows the projection relationship between the first magnetic conductive element 451, the second magnetic conductive element 452, and the electromagnetic assembly 440 on the first reference plane M. The orthographic projection t1 of the first magnetic conductive element 451 on the first reference plane M completely covers the orthographic projection t2 of the electromagnetic assembly 440 on the first reference plane M. At this time, the first magnetic conductive element 451 provides a full-coverage magnetic focusing effect from one end of the electromagnetic assembly 440. In this way, when the electromagnetic assembly 440 is energized, the magnetic field lines originating from any position of the N pole of the electromagnetic assembly 440 can be distributed along the first magnetic conductive element 451, avoiding magnetic leakage on one side of the first magnetic conductive element 451.

[0143] In other embodiments, similarly, the orthographic projection t3 of the second magnetic conductor 452 on the first reference plane M can also completely cover the orthographic projection t2 of the electromagnetic component 440 on the first reference plane M. In this case, the second magnetic conductor 452 provides a full-coverage magnetic focusing effect from the other end of the electromagnetic component 440. For example, when the electromagnetic component 440 is energized, the second magnetic conductor 452 gathers as many magnetic lines of force as possible to return them to the S pole of the electromagnetic component 440, thus avoiding magnetic leakage on one side of the first magnetic conductor 451.

[0144] Furthermore, the orthographic projection t1 of the first magnetic conductive element 451 on the first reference plane M and the orthographic projection t3 of the second magnetic conductive element 452 on the first reference plane M can both completely cover the orthographic projection t2 of the electromagnetic component 440 on the first reference plane M, thereby providing a magnetic focusing effect from the N and S poles of the electromagnetic component 440.

[0145] In some embodiments, the third magnetic conductor 453 is connected to the first magnetic conductor 451, and in the first direction L1, one end of the third magnetic conductor 453 away from the first magnetic conductor 451 is flush with one end of the electromagnetic component 440, or the end of the third magnetic conductor 453 away from the first magnetic conductor 451 protrudes relative to the electromagnetic component 440 towards the side closer to the second magnetic conductor 452.

[0146] Please see Figure 14a , Figure 14a for Figure 7 The diagram shows another cross-sectional planar structure of the button module 400. The total dimension of the third magnetic conductive element 453 in the first direction L1 is D2, and the total dimension of the electromagnetic component 440 in the first direction L1 is D1, as exemplarily. Figure 14aThe embodiment shown has D2 greater than D1. In other embodiments, D1 may also be equal to D2. It is understood that the total size D1 of the electromagnetic component 440 does not include the length of the external conductor formed for energization. Y specifically refers to the distance between the N and S poles formed by the electromagnetic component 440 after energization. Thus, the orthographic projection of the third magnetic element 453 on the second reference plane completely covers the orthographic projection of the electromagnetic component 440 on the second reference plane, allowing the third magnetic element 453 to completely cover the electromagnetic component 440 in the first direction L1. The third magnetic element 453 can provide an all-around magnetic focusing effect from the outer periphery of the electromagnetic component 440, avoiding magnetic leakage from the outer periphery of the electromagnetic component 440.

[0147] Please refer to the following: Figure 14a and Figure 14b , Figure 14b for Figure 14a A schematic diagram of the projection relationship between the third magnetic conductive element 453 and the second magnetic conductive element 452 on the first reference plane M is shown. The orthographic projection t4 of the third magnetic conductive element 453 on the first reference plane M overlaps with the orthographic projection t3 of the second magnetic conductive element 452 on the first reference plane M. At this time, the third magnetic conductive element 453 is partially directly opposite the second magnetic conductive element 452 in the first direction L1. When the electromagnetic component 440 is in the de-energized state, the third magnetic conductive element 453 and the second magnetic conductive element 452 have a first gap in the first direction L1, and the electromagnetic component 440 and the second magnetic conductive element 452 have a fourth gap. Thus, when the electromagnetic component 440 is energized, the third magnetic conductor 453 can be driven to move closer to the second magnetic conductor 452. It can be understood that the limit position that the third magnetic conductor 453 can move to is the position when the third magnetic conductor 453 is in contact with the second magnetic conductor 452, or the position when the electromagnetic component 440 is in contact with the second magnetic conductor 452.

[0148] Please refer to the following: Figure 14a The first gap has a dimension of X1 in the first direction L1, and the fourth gap has a dimension of X4 in the first direction L1. The electromagnetic force and feedback force of the electromagnetic component 440 are positively correlated; that is, the greater the electromagnetic force, the greater the feedback force. According to the equivalent magnetic circuit method, the electromagnetic force is inversely proportional to the size of the first gap X1, and similarly, the electromagnetic force is inversely proportional to the size of the fourth gap X4. Please refer to... Figure 15 , Figure 15 This is a circuit diagram of the equivalent magnetic circuit of reluctance and magnetomotive force. Specifically, taking the electromagnetic component 440 as an electromagnetic coil as an example, when the electromagnetic component 440 is in the de-energized state, the magnetic reluctance formed by the gap below the third magnetic conductor 453 is simplified to the first magnetic reluctance R1. For example, in Figure 14aIn the embodiment shown, the first magnetic reluctance R1 is the air magnetic reluctance of the first gap. The gap below the electromagnetic component 440, i.e., the fourth gap, is simplified to the second magnetic reluctance R2. The first magnetic conductor 451, the second magnetic conductor 452, and the third magnetic conductor 453 are made of magnetic materials with low magnetic reluctance and are therefore ignored. The formula for calculating the electromagnetic force is:

[0149] Formula ①: F=Φ 2 / 2μA, F is the electromagnetic force, Φ is the air gap magnetic flux, A is the surface area of ​​the second magnetic conductor 452 facing the electromagnetic component 440, and μ is the magnetic permeability;

[0150] Formula ②: Φ=E / R, where E is the magnetomotive force, E=NI, N is the number of turns of the coil, I is the current magnitude, and R is the magnetic reluctance;

[0151] Formula ③: R = 2α / μA, where α is the size of the gap, for example, α is the size of the first gap;

[0152] Substituting formulas ② and ③ into ①, we get F = N. 2 I 2 μA / 8α 2 .

[0153] Please continue reading. Figure 15 ,from Figure 15 It can be seen that the total magnetic reluctance R of the complete magnetic circuit formed by the electromagnetic component 440 is R1 + R2. The smaller the total magnetic reluctance, the greater the electromagnetic force F. Since R1 is proportional to X1 and R2 is proportional to X4, in some embodiments, X1 and X4 can be minimized as much as possible, thereby reducing the total magnetic reluctance R and increasing the electromagnetic force F. In other embodiments, the surface area of ​​the second magnetic conductor 452, which attracts the electromagnetic component 440, facing the electromagnetic component 440 can be increased, thereby increasing the electromagnetic force F.

[0154] In some embodiments, the size X1 of the first gap may be greater than or equal to 0.15 mm and less than or equal to 0.2 mm to ensure that the movement of the third magnetic conductor 453 is not affected while minimizing R1 as much as possible. In other embodiments, the size X4 of the fourth gap may be greater than or equal to 0.15 mm and less than or equal to 0.2 mm to ensure that the movement of the electromagnetic assembly 440 is not affected while minimizing R1 and R2 as much as possible.

[0155] In some embodiments, please refer to Figure 16a and Figure 16b , Figure 16a for Figure 7 This is another cross-sectional planar structural diagram of the button module 400 shown. Figure 16b for Figure 16aThe diagram shows the projection relationship between the third magnetic conductive element 453 and the second magnetic conductive element 452 on the first reference plane M. The third magnetic conductive element 453 is connected to the first magnetic conductive element 451. The orthographic projection t4 of the third magnetic conductive element 453 on the first reference plane M is completely offset from the orthographic projection t3 of the second magnetic conductive element 452 on the first reference plane M. Furthermore, the orthographic projection t4 of the third magnetic conductive element 453 on the first reference plane M is located circumferentially outside the orthographic projection t3 of the second magnetic conductive element 452 on the first reference plane M. In this way, the excessive thickness of the third magnetic conductive element 453 and the second magnetic conductive element 452 in the first direction L1 can be avoided from affecting the movement of the electromagnetic component 440, ensuring the deformation degree of the feedback element 420 and improving the feedback force.

[0156] Specifically, when the electromagnetic component 440 is de-energized, the third magnetic conductive element 453 is directly opposite and spaced apart from the third surface 431a in the first direction L1. When the electromagnetic component 440 is energized, the third magnetic conductive element 453 can be moved closer to the second magnetic conductive element 452. It can be understood that the limit position that the third magnetic conductive element 453 can move to is the position when the third magnetic conductive element 453 is in contact with the third surface 431a, or the position when the electromagnetic component 440 is in contact with the second magnetic conductive element 452.

[0157] exist Figure 16a In the illustrated embodiment, when the electromagnetic component 440 is de-energized, a fifth gap exists between the third magnetic conductor 453 and the third surface 431a. The size of the fifth gap is X5. At this time, the first magnetic reluctance R1 is the air magnetic reluctance of the fifth gap. From the calculation formula of the electromagnetic force F above, it can be concluded that R1 and X5 are proportional. Therefore, in order to maximize the electromagnetic force F, the size of X5 can be minimized. For example, the size of the fifth gap X5 can be greater than or equal to 0.15 mm and less than or equal to 0.2 mm to ensure that the movement of the third magnetic conductor 453 is not affected while minimizing R1.

[0158] In another embodiment, see Figure 17 , Figure 17 for Figure 7The diagram shows a cross-sectional planar structure of the button module 400. A third magnetic conductor 453 is connected to a first magnetic conductor 451. A first clearance groove 434 is provided on the support member 431. The first clearance groove 434 has a first opening 434a and a first groove bottom wall 434b. The first opening 434a is formed on the surface of the support member 431 facing the feedback member 420. When the electromagnetic component 440 is de-energized, the third magnetic conductor 453 is opposite to and spaced apart from the first groove bottom wall 434b. Thus, when the electromagnetic component 440 is energized, the third magnetic conductor 453 can be driven from the first opening 434a into the first clearance groove 434 and move within the first clearance groove 434. Understandably, the limit position that the third magnetic conductor 453 can move to at this time is the position when the third magnetic conductor 453 abuts against the bottom wall 434b of the first groove, or the position when the electromagnetic component 440 abuts against the second magnetic conductor 452.

[0159] exist Figure 17 In the illustrated embodiment, by providing a first clearance groove 434 on the support member 431, the third magnetic conductive member 453 can move relative to the support member 431. Thus, in practical implementation, the dimensions of the feedback member 420 and the support member 431 in the first direction L1 can be shortened to reduce the overall size of the button module 400. Furthermore, when the electromagnetic component 440 is in a de-energized state, a second gap exists between the third magnetic conductive member 453 and the bottom wall 434b of the first groove. The size of the second gap is X2, and the first magnetic reluctance R1 is the air magnetic reluctance of the second gap. From the calculation formula for the electromagnetic force F above, it can be concluded that R1 and X2 are proportional. Therefore, to maximize the electromagnetic force F, the size of X2 can be minimized. For example, the size of the second gap X2 can be greater than or equal to 0.15 mm and less than or equal to 0.2 mm to ensure that the movement of the third magnetic conductive member 453 is not affected while minimizing R1.

[0160] exist Figure 14a , Figure 16a and Figure 17 In the illustrated embodiment, although the magnetic reluctance R1 can be reduced as much as possible by narrowing the gap, R1 always exists. To further reduce the total magnetic reluctance R, in some embodiments, please refer to [reference needed]. Figure 18 , Figure 18 for Figure 17The diagram shows another cross-sectional planar structure of the button module 400. When the electromagnetic component 440 is in the de-energized state, a portion of the third magnetic conductive element 453 is located circumferentially outside the second magnetic conductive element 452. The third magnetic conductive element 453 has a first part, a second part, and a third part in the first direction L1. The first part is located circumferentially outside the first outer peripheral wall 443 of the electromagnetic component 440, the second part is located circumferentially outside the fourth gap between the electromagnetic component 440 and the second magnetic conductive element 452, and the third part is located circumferentially outside the second magnetic conductive element 452. This eliminates the gap between the third magnetic conductive element 453 and the second magnetic conductive element 452 in the first direction L1, naturally eliminating magnetic resistance. At this time, R1 is 0, and the total magnetic resistance R = R2, achieving a significant reduction in magnetic resistance and improving the feedback force.

[0161] Please refer to the following: Figure 19a and Figure 19b , Figure 19a for Figure 18 The diagram shows a cross-sectional planar structure of the electromagnetic component 440 of the button module 400 when it is energized. Figure 19b for Figure 19a The diagram shows an enlarged structural representation at point B, where a portion of the third magnetic conductor 453 can enter the first clearance groove 434. The first clearance groove 434 has opposing and spaced first groove sidewalls 434c and second groove sidewalls 434d. The first groove sidewall 434c faces the same side as the first side surface 4531, and the second groove sidewall 434d faces the same side as the second side surface 4532. The second groove sidewall 434d is flush with the outer peripheral wall of the second magnetic conductor in the first direction L1. This allows the second magnetic conductor 452 to be closest to the first clearance groove 434 without affecting the entry of the third magnetic conductor 453 into the first clearance groove 434, and avoids magnetic leakage caused by excessive gap between the second magnetic conductor 452 and the third magnetic conductor in the first clearance groove 434 in the second direction L2.

[0162] In some embodiments, please continue reading Figure 19b There is a sixth gap between the first side 4531 and the outer peripheral wall of the second magnetic conductive element 452. The size of the sixth gap X6 is less than or equal to 0.05mm, so as to ensure that the distance between the third magnetic conductive element 453 and the second magnetic conductive element 452 in the second direction L2 is small enough to reduce the magnetic resistance formed by the gap between the third magnetic conductive element 453 and the second magnetic conductive element 452 and reduce magnetic leakage.

[0163] The above Figures 7 to 19bIn any embodiment, the thickness of the first magnetically conductive element 451 may be greater than or equal to 0.3 mm, that is, the dimension of the first magnetically conductive element 451 in the first direction L1 is greater than or equal to 0.3 mm. It can be understood that the magnetic reluctance is inversely proportional to the thickness of the first magnetically conductive element 451. The thicker the first magnetically conductive element 451, the smaller the magnetic reluctance it forms, and the greater the feedback force. Therefore, by appropriately increasing the thickness of the first magnetically conductive element 451, the electromagnetic force is enhanced.

[0164] Similarly, the thickness of the third magnetic conductive element 453 can also be greater than or equal to 0.3 mm. For example, the first magnetic conductive element 451 and the second magnetic conductive element 452 can be connected to form a shielding frame with a thickness greater than or equal to 0.3 mm, which covers the electromagnetic component 440 for magnetization.

[0165] In some embodiments, the thickness of the second magnetic conductor 452 may be less than or equal to 0.2 mm. For example, in... Figure 18 and Figure 19a In the embodiment shown, the gap below the third magnetic conductor 453 is eliminated, so that the magnetic flux is concentrated at the fourth gap between the electromagnetic component 440 and the second magnetic conductor 452. At this time, the thickness of the second magnetic conductor 452 can be made as small as possible to achieve saturation of the magnetic flux in the fourth gap and increase the magnitude of the feedback force.

[0166] The above Figures 7 to 19b In any embodiment, a third gap exists between the third magnetic conductor 453 and the electromagnetic assembly 440, that is, please refer to Figure 19a In the second direction L2, a third gap is formed between the first side 4531 and the first outer peripheral wall 443 of the electromagnetic component 440. The size X3 of the third gap in the second direction L2 is greater than 0 and less than or equal to 0.4mm. This can shorten the magnetic circuit length of the entire closed loop and make the third magnetic conductor 453 as close as possible to the electromagnetic component 440, thereby improving the magnetic focusing effect.

[0167] In some embodiments, the button module 400 further includes a first elastic feedback section 461. (See also...) Figure 20 , Figure 20 The diagram shows a cross-sectional planar structure of a button module 400 provided in some embodiments of this application, including a first elastic feedback section 461. The first elastic feedback section 461 can elastically deform along a first direction L1. It is understood that this elastic deformation is a recoverable elastic deformation. For example, the first elastic feedback section 461 can be made of materials such as springs or rubber.

[0168] Specifically, the first elastic feedback part 461 is disposed on the third magnetic conductive member 453. When the electromagnetic component 440 is energized, the third magnetic conductive member 453 can drive the first elastic feedback part 461 to move until the first elastic feedback part 461 abuts against the third surface 431a. Under the compression of the third magnetic conductive member 453 and the support member 431, the first elastic feedback part 461 generates compression deformation and accumulates elastic restoring force. Thus, when the electromagnetic component 440 switches to the de-energized state, the first elastic feedback part 461 releases the elastic restoring force, driving the feedback member 420 to move away from the support member 431. At the same time, under the action of the electromagnetic force of the electromagnetic component 440, the feedback member 420 is subjected to a dual force, thereby improving the feedback effect.

[0169] Understandable. Figure 20 The first elastic feedback unit 461 shown can be combined with Figures 7 to 19b In any of the embodiments described above.

[0170] Please see Figure 21 , Figure 21 A cross-sectional planar structural diagram of a button module 400 provided in some embodiments of this application includes a first elastic feedback section 461. In this case, the support member 431 has a first clearance groove 434 providing deformation space for the first elastic feedback section 461. The first elastic feedback section 461 is disposed on a third magnetic conductive member 453. When the electromagnetic component 440 is energized, the third magnetic conductive member 453 can drive the first elastic feedback section 461 to move until the first elastic feedback section 461 abuts against the first groove bottom wall 434b of the first clearance groove 434. Under the compression of the third magnetic conductive member 453 and the first groove bottom wall 434b, the first elastic feedback section 461 undergoes compressive deformation and accumulates elastic restoring force. Thus, when the electromagnetic component 440 switches to an off-state, the first elastic feedback section 461 releases the elastic restoring force, driving the feedback member 420 to move away from the support member 431. Simultaneously, under the action of the electromagnetic force of the electromagnetic component 440, the feedback member 420 is subjected to a dual force, thereby improving the feedback effect.

[0171] In actual operation, users can lightly press the button module 400 to obtain feedback force from the electromagnetic force of the electromagnetic component 440. Users can also press the button module 400 harder, causing the feedback component 420 to drive the third magnetic conductive component 453 to move closer to the support component 431 and compress the first elastic feedback part 461, thereby obtaining feedback force from the electromagnetic force of the electromagnetic component 440 and the elastic restoring force of the elastic feedback part, realizing two different levels of feedback effects: light pressing and heavy pressing.

[0172] In some embodiments, the button module 400 may further include a second elastic feedback unit 462. (See also...) Figure 22 , Figure 22The schematic diagram of the cross-sectional planar structure of the key module 400 provided in some embodiments of this application includes a second elastic feedback part 462. The second elastic feedback part 462 can be disposed on the keycap 410, thereby achieving superposition with the electromagnetic force of the electromagnetic component 440 to achieve the effects of light pressing and heavy pressing.

[0173] In other embodiments, the second elastic feedback unit 462 may also be combined with the first elastic feedback unit 461 in any of the above embodiments to further enhance the feedback effect. The second elastic feedback unit 462 can elastically deform along the first direction L1, and it is understood that this elastic deformation is a recoverable elastic deformation. For example, the second elastic feedback unit 462 may also be made of materials such as springs or rubber.

[0174] For details, please continue reading. Figure 22 A second elastic feedback section 462 is provided between the first connecting arm 412 and the feedback element 420, and between the second connecting arm 413 and the feedback element 420. When the user presses the keycap 410, the first connecting arm 412 and the second connecting arm 413 move and press the second elastic feedback section 462, causing the second elastic feedback section 462 to undergo compression deformation and accumulate elastic restoring force. Thus, when the user's pressing force disappears, the second elastic feedback section 462 releases the elastic restoring force, thereby providing feedback force to the user.

[0175] Please see Figure 23a , Figure 23a A cross-sectional planar structural schematic diagram of a button module 400 provided in some embodiments of this application, including a second elastic feedback portion 462, is shown. The first connecting arm 412 and the second connecting arm 413 both extend through the feedback member 420 into the first space Q1. The second elastic feedback portion 462 is provided at the end of the first connecting arm 412 facing the support member 431 and at the end of the second connecting arm 413 facing the support member 431.

[0176] When the user presses the keycap 410, the first connecting arm 412 and the second connecting arm 413 move, causing the second elastic feedback part 462 to move towards the side closer to the support member 431. Simultaneously, the electromagnetic component 440 switches to the energized state and drives the feedback member 420 to move towards the side closer to the support member 431. Since the keycap 410 is connected to the feedback member 420, see [reference needed]. Figure 23b , Figure 23b for Figure 23aThe diagram shows the structure of the feedback element 420 of the button module 400 after deformation. Under the combined action of the feedback element 420 and the keycap 410, the second elastic feedback part 462 can abut against the third surface 431a. Under the compression of the first connecting arm 412 and the support member 431, and the second connecting arm 413 and the support member 431, the second elastic feedback part 462 undergoes compressive deformation and accumulates elastic restoring force. Thus, when the second elastic feedback part 462 releases its elastic restoring force, it drives the feedback element 420 to move away from the support member 431. Simultaneously, under the electromagnetic force of the electromagnetic component 440, the feedback element 420 is subjected to a dual force, thereby improving the feedback effect.

[0177] Understandably, in Figure 22 and Figure 23b In the embodiment shown, the moment when the user's pressing force disappears and the moment when the electromagnetic component 440 switches to the power-off state can occur simultaneously. In this way, the second elastic feedback unit 462 can work in conjunction with the electromagnetic component 440 to enhance the feedback force.

[0178] For ease of explanation, the following description uses the connection of the first magnetic conductive element 451 and the third magnetic conductive element 453 as an example to illustrate the process of switching the electromagnetic component 440 from a power-off state to a power-on state:

[0179] Initial moment: The electromagnetic component 440 is in a de-energized state, the second magnetic conductor 452 is spaced apart from the electromagnetic component 440 in the first direction L1, and the third magnetic conductor 453 is spaced apart from both the second magnetic conductor 452 and the carrier 431 in the first direction L1.

[0180] First action process: Under certain triggering conditions, such as when a user touches the keycap 410, the electromagnetic component 440 is energized and switched to the energized state. At this time, the energized electromagnetic component 440 generates electromagnetic force, and the second magnetic conductor 452 and the electromagnetic component 440 attract each other. The electromagnetic component 440 drives the feedback component 420 to move closer to the support component 431, and at the same time, the first magnetic conductor 451 and the third magnetic conductor 453 move closer to the support component 431, and the feedback component 420 undergoes bending deformation.

[0181] The second action process: Under certain triggering conditions, such as the user's pressing pressure disappearing, the feedback component 420 drives the keycap 410 to move away from the support component 431 and provides feedback force to the user, so that the user gets a vibration. In this process, the magnitude of the feedback force that the feedback component 420 can provide is positively correlated with the magnitude of the electromagnetic force of the electromagnetic component 440. The greater the electromagnetic force, the greater the bending deformation of the feedback component 420, and the greater the feedback force that can be provided to the user.

[0182] Thus, the button module 400 of this application, through the settings of any of the above embodiments, enhances the electromagnetic force to provide a better feedback effect to the user.

[0183] Furthermore, in Figures 7 to 23b In any embodiment, according to the above formula for calculating the electromagnetic force F, when α deviates, α 2 This will result in a greater degree of deviation, leading to poor consistency in the electromagnetic force F. Consequently, the magnitude and uniformity of the vibration felt when the user presses the button will be significantly affected. Therefore, please refer to [further details needed]. Figure 22 The surfaces of the first bottom wall 442 and the second magnetic conductor 452 facing the first bottom wall 442 need to be parallel to ensure that the gap below the electromagnetic assembly 440, i.e., the fourth gap, is uniform. That is, the size of the fourth gap is the same at all positions or within an acceptable deviation range. For example, the size X4 of the fourth gap can be 0.15mm ± 0.02mm. This allows the electromagnetic assembly 440 to provide the same electromagnetic force at different positions, avoiding large deviations in the size of the fourth gap, thereby improving the consistency of the electromagnetic force and providing better feedback to the user.

[0184] Similarly, please refer back to [link / reference]. Figure 4 and Figure 5 ,exist Figures 4 to 5 In the illustrated embodiment, the gap formed by the electromagnetic component 440 and the actuating member 433 along the first direction L1 also needs to be kept consistent to improve the consistency of the electromagnetic force. In some embodiments, the feedback member 420 needs to be connected by additional parts, for example, by screws to connect the feedback member 420 and the connecting member 432. However, during the screw connection process, the feedback member 420 is easily affected, resulting in local deformation, local displacement, etc., which causes the position of the electromagnetic component 440 relative to the actuating member 433 to change, affecting the consistency of the electromagnetic force.

[0185] Based on this, please refer to Figure 24 , Figure 24 The diagram shows a cross-sectional planar structure of a button module 400 provided in some embodiments of this application, including a support component 470. The button module 400 includes a keycap 410, a feedback element 420, a carrier element 431, a sensor (not shown in the figure), and an electromagnetic component 440. Figure 24 The keycap 410, feedback element 420, carrier element 431, and electromagnetic component 440 in the illustrated embodiment are related to... Figure 7 The keycap 410, feedback element 420, carrier element 431 and electromagnetic component 440 in the illustrated embodiment have the same structure. In other embodiments, the key module 400 may not include the keycap 410, which will not be described in detail here.

[0186] Specifically, the button module 400 also includes a support component 470, a second magnetic conductive element 452, and an elastic component 480. The support component 470 is disposed within the second space Q2 and connected to the feedback element 420. The support component 470 has the second space Q2. The electromagnetic component 440 and the second magnetic conductive element 452 are both disposed within the second space Q2 and are spaced apart along the first direction L1. The elastic component 480 is elastically connected between the support component 470 and the electromagnetic component 440. Similarly, Figure 24 The second magnetic conductor 452 in the illustrated embodiment can also be used with Figure 7 The second magnetic conductor 452 in the illustrated embodiment has the same structure.

[0187] The electromagnetic component 440 has an energized state and an de-energized state. In some embodiments, please refer to [the relevant documentation]. Figure 24 , Figure 24 The electromagnetic component 440 shown is in a de-energized state. Please refer to [link / reference]. Figure 25 , Figure 25 for Figure 24 The diagram shows the structure of the electromagnetic component 440 at a certain moment when it is energized. When the electromagnetic component 440 is energized, it generates a magnetic field, forming an electromagnetic force. Under the action of this magnetic field and electromagnetic force, the electromagnetic component 440 and the second magnetic conductor 452 attract each other, causing the electromagnetic component 440 to move closer to the second magnetic conductor 452. Simultaneously, the elastic component 480 connected to the electromagnetic component 440 undergoes elastic deformation, thereby accumulating an elastic restoring force to drive the electromagnetic component 440 to move closer to the feedback component 420. When the electromagnetic component 440 is de-energized, it releases this elastic restoring force, thereby driving the electromagnetic component 440 to move closer to the feedback component 420. The electromagnetic component 440 can then impact the support component 470, thus feeding the impact force back to the feedback component 420 to provide the user with a vibration feedback sensation.

[0188] The support component 470, electromagnetic component 440, second magnetic conductive element 452, and elastic component 480 can form an integral structure. When the support component 470 moves, the electromagnetic component 440, second magnetic conductive element 452, and elastic component 480 all move synchronously with the support component 470. That is, when the support component 470 moves or deforms, there will be no relative movement between the electromagnetic component 440 and the second magnetic conductive element 452; they will only move synchronously. Thus, during the connection of the support component 470 to the feedback component 420 and the connection of the feedback component 420 to the connecting component 432, even if the feedback component 420 is affected and undergoes local deformation or movement, the position of the electromagnetic component 440 relative to the second magnetic conductive element 452 will not change. At this time, the gap between the electromagnetic component 440 and the second magnetic conductive element 452 can be kept consistent, reducing the problem of uneven gap caused by assembly and other factors.

[0189] exist Figures 24 to 25 In the illustrated embodiment, the support component 470 provides only support when the electromagnetic component 440 is in any state. For example, the support component 470 can be made of a hard, non-deformable material such as steel or stainless steel to provide effective protection for the structure within the second space Q2. Furthermore, the support component 470, connected to the feedback component 420, is spaced apart from the support component 431 along the first direction L1. Thus, when the feedback component 420 is subjected to force and deforms towards the support component 431, the support component 470 can move along the first direction L1 towards the support component 431, thereby preventing the support component 470 from blocking the feedback component 420 and affecting its deformation. It is understood that when the feedback component 420 drives the support component 470 to move along the first direction L1 towards the support component 431, the electromagnetic component 440, the elastic component 480, and the second magnetically conductive component 452 move synchronously.

[0190] In some embodiments, the support component 470 includes a second top wall 471, a second bottom wall 472, and a second outer peripheral wall 473. The second top wall 471 and the second bottom wall 472 are arranged opposite to each other and spaced apart along a first direction L1. The second outer peripheral wall 473 is connected between the second top wall 471 and the second bottom wall 472. The feedback component 420 and the electromagnetic component 440 are connected to opposite sides of the second top wall 471, and the second magnetic conductive component 452 is connected to the second bottom wall 472, thereby realizing the spaced arrangement of the electromagnetic component 440 and the second magnetic conductive component 452.

[0191] In other embodiments, please refer to [the relevant documentation]. Figure 24 and Figure 25 The elastic component 480 includes at least one first elastic element 481, which may be made of a deformable and recoverable material such as a spring. The second outer peripheral wall 473 is located on the outer periphery of the electromagnetic component 440, and the first elastic element 481 is connected between the electromagnetic component 440 and the second outer peripheral wall 473. Specifically, each first elastic member 481 includes a first connecting end connected to the second outer peripheral wall 473 and a second connecting end connected to the electromagnetic component 440. When the electromagnetic component 440 and the second magnetic conductive member 452 attract each other, the electromagnetic component 440 moves towards the side closer to the second magnetic conductive member 452 and drives the second connecting end to move towards the side closer to the first magnetic conductive member 451, thereby causing the first elastic member 481 to oscillate in the first direction L1 and accumulate elastic restoring force. When the electromagnetic component 440 is de-energized, the first elastic member 481 releases the elastic restoring force and drives the electromagnetic component 440 to move towards the side closer to the second top wall 471 and the feedback member 420, so that the electromagnetic component 440 can collide with the second top wall 471 and the feedback member 420.

[0192] When the electromagnetic component 440 cycles between the power-off state and the power-on state, the first elastic member 481 can swing up and down along the first direction L1, thereby cycling between the accumulation and release of elastic restoring force. When the electromagnetic component 440 is kept in the power-off state, under the connection of the first elastic member 481, the electromagnetic component 440 can finally be fixed in the support component 470 and stationary relative to the second magnetic conductor 452, and the first elastic member 481 extends along the second direction L2.

[0193] In some embodiments, when there are multiple second outer peripheral walls 473, there are also multiple first elastic elements 481, with one or more first elastic elements 481 connected between each second outer peripheral wall 473 and the electromagnetic component 440. For example, there may be four second outer peripheral walls 473, causing the support component 470 to form a cuboid shape. There are four first elastic elements 481, with one connected between each second outer peripheral wall 473 and the electromagnetic component 440. This allows the electromagnetic component 440 to be fixed from all sides, while multiple first elastic elements 481 together swing and deform along a first direction L1, increasing the magnitude of the elastic restoring force to further enhance the feedback force.

[0194] It is understandable that the electromagnetic component 440 in the second space Q2 needs to be energized. Therefore, the electromagnetic component 440 must have a connecting wire extending out of the second space Q2. In order to facilitate wiring, the connecting wire of the electromagnetic component 440 can be wrapped around the first elastic member 481 and extend out from the connection position between the first elastic member 481 and the second outer peripheral wall 473 to the outside of the support component 470, and make electrical connection with electrical components such as the circuit board assembly 300 of the electronic device 1000.

[0195] Please see Figure 26 , Figure 26 This is a cross-sectional planar structural diagram of a button module 400 provided in some embodiments of this application, including a support component 470. The elastic component 480 includes at least one second elastic element 482, which is connected between the electromagnetic component 440 and the second magnetically conductive component 452. Specifically, each second elastic element 482 includes a third connecting end and a fourth connecting end. The third connecting end is connected to the electromagnetic component 440, and the fourth connecting end is connected to the second magnetically conductive component 452. When the electromagnetic component 440 and the second magnetically conductive component 452 attract each other, the electromagnetic component 440 moves towards the side closer to the second magnetically conductive component 452 and compresses the second elastic element 482. This causes the first elastic element 481 to undergo compressive deformation in the first direction L1 and accumulate elastic restoring force. When the electromagnetic component 440 is de-energized, the first elastic element 481 releases the elastic restoring force, causing the electromagnetic component 440 to move towards the side closer to the second top wall 471 and the feedback component 420, so that the electromagnetic component 440 can impact the second top wall 471 and the feedback component 420.

[0196] When the electromagnetic component 440 cycles between a power-off state and a power-on state, the first elastic member 481 can be compressed and elastically released along the first direction L1, thereby cycling between the accumulation and release of elastic restoring force. When the electromagnetic component 440 remains in the power-off state, with the connection of the second elastic member 482, the electromagnetic component 440 can finally be fixed in the support component 470 and stationary relative to the second magnetic conductor 452, and the second elastic member 482 extends along the first direction L1.

[0197] In some embodiments, the second elastic element 482 may include multiple elements. When the electromagnetic component 440 is in a de-energized state, the multiple second elastic elements 482 can jointly support the electromagnetic component 440 so that it is fixed relative to the second magnetic conductive element 452. When the electromagnetic component 440 is in an energized state, the multiple second elastic elements 482 jointly generate compression deformation along the first direction L1, thereby increasing the magnitude of the elastic restoring force and providing good feedback force.

[0198] In the above embodiments of this application, the first elastic member 481 and the second elastic member 482 can be used in combination. That is, in the embodiments of the same button module 400, the electromagnetic component 440 is connected to the second outer peripheral wall 473 through the first elastic member 481, and at the same time, the electromagnetic component 440 is connected to the second magnetic conductive member 452 through the second elastic member 482.

[0199] exist Figures 24 to 26 In any of the embodiments shown, the second top wall 471 can be a permanent magnet, while the second outer peripheral wall 473 and the second bottom wall 472 are made of non-magnetic materials. The permanent magnet itself is magnetic and its magnetism is not affected by the magnetic field of the electromagnetic component 440. In this way, the second top wall 471 and the second magnetically conductive component 452 can also attract each other, thereby causing the second top wall 471 to drive the feedback component 420 to bend and deform towards the side closer to the support component 431, thereby increasing the degree of deformation of the feedback component 420 and enhancing the feedback force.

[0200] In other embodiments, the second bottom wall 472 is a permanent magnet, and the second outer peripheral wall 473 and the second top wall 471 are non-magnetic materials. When the electromagnetic component 440 is energized, the second magnetic component 452 can also attract each other, thereby increasing the deformation degree of the first elastic component 481 and / or the second elastic component 482 and increasing the feedback force.

[0201] In some other embodiments, the second top wall 471 and the second bottom wall 472 may both be permanent magnets to further enhance the feedback effect. It is understood that the magnetism formed by the permanent magnets should not be too strong so as to ensure that the electromagnetic component 440 and the second magnetic conductor 452 can remain relatively stable when the electromagnetic component 440 is in a de-energized state.

[0202] The above Figure 22or Figure 23b The second elastic feedback unit 462 in the middle embodiment can be connected with Figures 24 to 26 The embodiments shown are combined in various ways. In some embodiments, please refer to [link to relevant documentation]. Figure 27 , Figure 27 The schematic cross-sectional planar structure of the key module 400 provided in some embodiments of this application includes a support component 470 and a second elastic feedback portion 462. The first connecting arm 412 and the second connecting arm 413 of the keycap 410 both extend through the feedback member 420 into the first space Q1. The second elastic feedback portion 462 is provided at the end of the first connecting arm 412 facing the support member 431 and at the end of the second connecting arm 413 facing the support member 431. Thus, the feedback effect is improved under the dual action of the feedback member 420 and the second elastic feedback portion 462.

[0203] The button module 400 of this application is applied in an electronic device 1000. On the one hand, through the cooperative arrangement of the first magnetic conductive element 451, the second magnetic conductive element 452, and the third magnetic conductive element 453 with the electromagnetic component 440, magnetic resistance is reduced, providing a good magnetic focusing effect and reducing magnetic leakage, thereby confining the magnetic field more tightly within the electromagnetic component 440, improving the feedback force, and allowing the user to obtain a better feedback effect. On the other hand, the support component 470 fixes the gap between the second magnetic conductive element 452 and the electromagnetic component 440, improving the consistency of the electromagnetic force and thus enhancing the feedback force, allowing the user to obtain a better feedback effect. In this way, the feedback experience obtained by the user touching the solid-state button module 400 is improved.

[0204] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0205] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A button module, characterized in that, include: A feedback element and a carrier element, wherein the feedback element and the carrier element are opposite to and spaced apart in a first direction; The first magnetic conductive element and the second magnetic conductive element are both disposed between the feedback element and the carrier element, and the first magnetic conductive element is connected to the feedback element and the second magnetic conductive element is connected to the carrier element; An electromagnetic component is disposed on the side of the first magnetic conductive element facing the second magnetic conductive element, and the electromagnetic component is spaced apart from the second magnetic conductive element; The third magnetic conductive element is located on the circumferential outer side of the electromagnetic component, and the third magnetic conductive element is connected to one of the first magnetic conductive element and the second magnetic conductive element. The electromagnetic component has an energized state and an de-energized state. When the electromagnetic component is in the energized state, it attracts the second magnetic conductor and causes the feedback component to bend and deform towards the side closer to the support component. When the electromagnetic component is in the de-energized state, the feedback component causes the electromagnetic component to move away from the support component.

2. The button module according to claim 1, characterized in that, The third magnetic conductor is connected to the first magnetic conductor. In the first direction, the end of the third magnetic conductor away from the first magnetic conductor is flush with one end of the electromagnetic component, or protrudes towards the side of the electromagnetic component closer to the second magnetic conductor.

3. The button module according to claim 1 or 2, characterized in that, The third magnetic conductive element is connected to the first magnetic conductive element. The orthographic projection of the third magnetic conductive element on the first reference surface overlaps with the orthographic projection of the second magnetic conductive element on the first reference surface. When the electromagnetic component is in the power-off state, the third magnetic conductive element and the second magnetic conductive element have a first gap in the first direction, and the first reference surface is perpendicular to the first direction.

4. The button module according to claim 3, characterized in that, The first gap is greater than or equal to 0.15 mm and less than or equal to 0.2 mm.

5. The button module according to claim 1, characterized in that, The third magnetic conductive element is connected to the first magnetic conductive element. The carrier is provided with a first clearance groove. The first clearance groove has a first opening and a first groove bottom wall. The first opening is formed on the surface of the carrier facing the feedback element. When the electromagnetic component is in the power-off state, the third magnetic conductive element is opposite to and spaced apart from the first groove bottom wall.

6. The button module according to claim 5, characterized in that, When the electromagnetic component is in the power-off state, a portion of the third magnetic conductor is located circumferentially outside the second magnetic conductor.

7. The button module according to claim 5 or 6, characterized in that, The distance between the surface of the third magnetic conductor facing the electromagnetic assembly and the outer peripheral wall of the second magnetic conductor is less than or equal to 0.05 mm.

8. The button module according to any one of claims 5-7, characterized in that, When the electromagnetic component is in the power-off state, there is a second gap between the third magnetic conductive element and the bottom wall of the first groove, the second gap being greater than or equal to 0.15 mm and less than or equal to 0.2 mm.

9. The button module according to any one of claims 1-8, characterized in that, The surface of the third magnetic conductive element facing the electromagnetic component has a third gap with the outer peripheral wall of the electromagnetic component. The third gap is greater than 0 and less than or equal to 0.4 mm.

10. The button module according to any one of claims 1-9, characterized in that, The first magnetic conductive element and the third magnetic conductive element are integrally formed, or the second magnetic conductive element and the third magnetic conductive element are integrally formed.

11. The button module according to any one of claims 1-10, characterized in that, The first magnetic conductive component and the feedback component are integrally formed.

12. The button module according to any one of claims 1-11, characterized in that, The orthographic projection of the first magnetic conductive element on the first reference plane completely covers the orthographic projection of the electromagnetic component on the first reference plane. And / or, the orthographic projection of the second magnetic conductor onto the first reference plane completely covers the orthographic projection of the electromagnetic component onto the first reference plane, the first reference plane being perpendicular to the first direction.

13. The button module according to any one of claims 1-12, characterized in that, The button module further includes a first elastic feedback part, and the first elastic feedback part can elastically deform along the first direction; The first elastic feedback part is disposed on the third magnetic conductive element. When the electromagnetic component is in the energized state, the third magnetic conductive element can drive the first elastic feedback part to move, so that the first elastic feedback part will undergo compression deformation.

14. The button module according to any one of claims 1-12, characterized in that, The button module also includes a keycap, which is disposed on the feedback element and at least a portion of the keycap is located on the side of the feedback element opposite to the carrier element; The keycap includes a first connecting arm and a second connecting arm connected to the feedback element. The orthographic projection of the third magnetic element on the first reference surface is located between the orthographic projection of the first connecting arm on the first reference surface and the orthographic projection of the second connecting arm on the first reference surface. Wherein, the first reference plane is perpendicular to the first direction.

15. The button module according to claim 14, characterized in that, The button module further includes a second elastic feedback section, which can elastically deform along the first direction. The second elastic feedback section is provided between the first connecting arm and the feedback element, and between the second connecting arm and the feedback element.

16. The button module according to claim 14, characterized in that, The button module further includes a second elastic feedback section, and the second elastic feedback section can elastically deform along the first direction; Both the first connecting arm and the second connecting arm extend into the first space through the feedback member. The first connecting arm facing the support member and the second connecting arm facing the support member are both provided with the second elastic feedback part.

17. The button module according to any one of claims 1-16, characterized in that, The thickness of the first magnetic conductive element is greater than or equal to 0.3 mm, and / or the thickness of the third magnetic conductive element is greater than or equal to 0.3 mm.

18. The button module according to any one of claims 1-17, characterized in that, The thickness of the second magnetic conductor is less than or equal to 0.2 mm.

19. The button module according to any one of claims 1-18, characterized in that, There is a fourth gap between the electromagnetic component and the second magnetic conductive element, the fourth gap being greater than or equal to 0.15 mm and less than or equal to 0.2 mm.

20. The button module according to any one of claims 1-19, characterized in that, The button module also includes a connector, which connects the feedback element and the carrier element. Furthermore, the feedback element, the connecting element, and the bearing element define a first space, and the first magnetic conductive element, the second magnetic conductive element, the third magnetic conductive element, and the electromagnetic component are all disposed in the first space.

21. A button module, characterized in that, include: A feedback element and a carrier element, wherein the feedback element and the carrier element are opposite to and spaced apart in a first direction; A support component is disposed between the feedback element and the carrier element, and the support component is connected to the feedback element, and the support component has a second space within it; The second magnetic conductor is disposed within the second space and connected to the support assembly; Both the electromagnetic component and the elastic component are disposed in the second space. The electromagnetic component and the second magnetic conductive component are spaced apart along the first direction. The elastic component is elastically connected between the support component and the electromagnetic component. The electromagnetic component has an energized state and an de-energized state. When the electromagnetic component is in the energized state, the second magnetic conductor attracts the electromagnetic component, and the electromagnetic component can move relative to the support component toward the second magnetic conductor, so that the elastic component accumulates an elastic restoring force to drive the electromagnetic component to move toward the side closer to the feedback component.

22. The button module according to claim 21, characterized in that, The elastic component includes at least one first elastic element; The support component includes a second outer peripheral wall located on the outer periphery of the electromagnetic component, and the first elastic element is connected between the electromagnetic component and the second outer peripheral wall.

23. The button module according to claim 21 or 22, characterized in that, The elastic component includes at least one second elastic element, which is connected between the electromagnetic component and the second magnetic conductive element.

24. The button module according to any one of claims 21-23, characterized in that, The support assembly has a second top wall and a second bottom wall disposed opposite to each other along a first direction, the electromagnetic assembly is connected to the second top wall, and the second magnetic conductor is connected to the second bottom wall; The second top wall and / or the second bottom wall are permanent magnets.

25. An electronic device, characterized in that, The device includes a housing and a button module, wherein the button module is the button module according to any one of claims 1-24, and the button module is disposed in the housing.

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