Controllable force button

Abstract

The present invention provides a controllable force button, comprising a central axis, a first magnetic element, and a coil group; the central axis, the first magnetic element, and the coil group are coaxially arranged; the first magnetic element is sleeved on the central axis, and the first magnetic element can reciprocate along the axis direction of the central axis in the coil group; the coil group is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element; the coil group includes a plurality of coils, and when the central axis is pressed by an external force, one of the plurality of coils generates a repulsive magnetic field, and after a preset time, the plurality of coils are connected in series to generate an attractive magnetic field. By reasonably setting the number of coils that generate repulsive and attractive forces, when the button is pressed, repulsion is generated by one coil, which can shorten the response time and increase the strength of the repulsive force. When suction is generated, the plurality of coils are connected in series to generate an attractive magnetic field, which can ensure the size of the magnetic field while reducing the current and reduce the heating of the coil.

Description

Technical Field

[0001] The present invention relates to the technical field of interactive devices, and in particular to a controllable force button. Background Art

[0002] Existing magnetic buttons use coils to generate attraction or repulsion based on variable current to create a sense of paragraph. Since the coil mainly reflects the inductance characteristics, the current change will take a process. The greater the inductance, the longer the charging time. However, the size of the inductance is proportional to the number of coil turns. If the number of coil turns is smaller, the coil resistance is smaller, and the power consumption is greater under DC conditions.

[0003] The repulsive force generated by the coil is controlled by instantaneous current. If the coil inductance is larger, the instantaneous current is too short to ensure that the coil generates the maximum repulsive force. If the number of coil turns is too small, the DC current when generating the attractive magnetic field will be too large, and the coil will also heat up. Summary of the Invention

[0004] The purpose of the present invention includes, for example, providing a controllable force button that can improve the power consumption and heat generation problems of existing magnetic buttons.

[0005] The technical solutions adopted in the present invention are as follows:

[0006] In a first aspect, an embodiment of the present invention provides a controllable force button, wherein the controllable force button includes a central axis, a first magnetic element, and a coil assembly;

[0007] The central axis, the first magnetic element and the coil group are coaxially arranged;

[0008] The first magnetic element is sleeved on the central axis, and the outer diameter of the first magnetic element is smaller than the inner diameter of the coil assembly;

[0009] When the central axis is pressed by an external force to reciprocate toward the coil group, the first magnetic element reciprocates along the axis of the central axis within the coil group;

[0010] The coil assembly is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element;

[0011] Wherein, the coil group includes multiple coils. When the central axis is pressed by external force, one of the multiple coils generates the repulsive magnetic field. After a preset time, the multiple coils are connected in series to generate the attractive magnetic field.

[0012] In an optional embodiment, the coil assembly includes a first coil and a second coil, and the first coil includes a first coil first end and a first coil second end;

[0013] The second coil includes a second coil first end and a second coil second end;

[0014] The first end of the first coil forms a first pin; the second end of the first coil is electrically connected to the first end of the second coil to form a second pin; the second end of the second coil forms a third pin;

[0015] When the central axis is pressed by an external force, the variable current flows into the second pin and flows out of the first pin to generate the repulsive magnetic field;

[0016] After a preset time period, the variable current flows into the first pin and flows out of the third pin to generate the attractive magnetic field.

[0017] In an optional embodiment, the first coil and the second coil are stacked.

[0018] In an optional embodiment, the first coil and the second coil are nested inside and outside.

[0019] In an optional embodiment, the central axis includes a first section, a second section and a first limiting member;

[0020] The first section and the second section are respectively arranged on both sides of the first limiting member, the second section faces the coil group, and the first section is away from the coil group;

[0021] The first magnetic element is sleeved on the first section, and the length of the first magnetic element is smaller than the length of the first section.

[0022] In an optional embodiment, the controllable force button further includes a bottom cover and an upper cover;

[0023] The bottom cover is recessed to form a mounting portion, and the coil assembly, the central axis, and the first magnetic element are disposed on the mounting portion;

[0024] The upper cover cooperates with the bottom cover to cover the coil assembly, the central axis and the first magnetic element within the mounting portion;

[0025] The upper cover is provided with a through hole. When the upper cover is covered on the bottom cover, one end of the central axis away from the coil assembly is exposed through the through hole.

[0026] In an optional embodiment, the controllable force key further comprises a button, and the button is arranged at an end of the central axis away from the coil assembly;

[0027] When the upper cover is covered on the bottom cover, the button is exposed through the through hole.

[0028] In an optional embodiment, the controllable force button further includes a control circuit board, on which a control chip and a trigger module are provided, and the trigger module is electrically connected to an input terminal of the control chip;

[0029] The control chip further includes a plurality of IO ports, wherein the IO ports are electrically connected to the coil assembly;

[0030] The trigger module is used to generate a trigger signal when the central axis is pressed by an external force, and transmit the trigger signal to the control chip;

[0031] The control chip is used to output the variable current to the coil group according to the trigger signal, so that the coil group generates an attractive magnetic field or a repulsive magnetic field according to the variable current to act on the first magnetic element.

[0032] In an optional embodiment, the trigger module includes a photosensitive element and an emitting light source corresponding to the photosensitive element;

[0033] The photosensitive element is electrically connected to the input terminal of the control chip;

[0034] The central axis is provided with a light-transmitting groove that allows light from the emitted light source to pass through;

[0035] When the central axis is forced to move toward the coil assembly, the light from the emitting light source passes through the light-transmitting slot and reaches the photosensitive element, so that the photosensitive element generates a trigger signal.

[0036] In an optional embodiment, the trigger module includes a first metal spring, which is connected to the input end of the control chip. A second metal spring corresponding to the first metal spring is provided at one end of the central axis close to the coil group. When the central axis is forced to move toward the coil group, the first metal spring contacts and the second metal spring to generate a trigger signal.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The controllable force button provided by the present invention includes a central axis, a first magnetic element and a coil group; the central axis, the first magnetic element and the coil group are coaxially arranged; the first magnetic element is sleeved on the central axis, and the outer diameter of the first magnetic element is smaller than the inner diameter of the coil group; when the central axis is pressed by an external force to reciprocate toward the coil group, the first magnetic element reciprocates along the axis direction in the coil group with the central axis; the coil group is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element; wherein the coil group includes a plurality of coils, and when the central axis is pressed by an external force, one coil of the plurality of coils generates a repulsive magnetic field, and after a preset time, the plurality of coils are connected in series to generate an attractive magnetic field. By reasonably setting the number of coils that generate repulsive and attractive forces, when the button is pressed, repulsion is generated by one coil, which can shorten the response time and increase the strength of the repulsive force. When suction is generated, the plurality of coils are connected in series to generate an attractive magnetic field, which can ensure the size of the magnetic field while reducing the current and reduce the heating of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of the appearance of a controllable force button is provided for this embodiment;

[0041] Figure 2 A schematic diagram of a portion of the structure of the controllable force button provided in this embodiment;

[0042] Figure 3 A schematic diagram of a portion of the structure of the controllable force button provided in this embodiment when a force is applied;

[0043] Figure 4 A pin diagram of the coil assembly provided in this embodiment;

[0044] Figure 5 A schematic diagram of the central axis provided in this embodiment;

[0045] Figure 6 A schematic diagram of a portion of the structure of another controllable force button provided in this embodiment;

[0046] Figure 7 A schematic diagram of the assembly structure of the controllable force button provided in this embodiment;

[0047] Figure 8 A schematic diagram of the assembly structure of the upper cover and the bottom cover provided in this embodiment;

[0048] Figure 9 A schematic diagram showing the connection between the control circuit board and the coil assembly provided in this embodiment;

[0049] Figure 10 This is a schematic diagram of the control method provided in this embodiment.

[0050] Icon: 100-controllable force button; 110-middle axis; 111-first section; 112-second section; 113-first limiter; 114-reset spring; 120-first magnetic element; 121-second magnetic element; 130-coil group; 131-first coil; 132-second coil; 133-first pin; 134-second pin; 135-third pin; 136-component pin; 140-bottom cover; 141-mounting part; 150-top cover; 151-through hole; 160-control circuit board; 161-trigger module; 162-control chip; 170-button. DETAILED DESCRIPTION

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0054] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first", "second", etc. are only used to distinguish descriptions and should not be understood as indicating or implying relative importance. It should be noted that the features in the embodiments of the present invention can be combined with each other if there is no conflict.

[0056] Existing magnetic buttons use coils to generate attraction or repulsion based on variable current to create a sense of paragraph. Since the coil mainly reflects the inductance characteristics, the current change will take a process. The greater the inductance, the longer the charging time. However, the size of the inductance is proportional to the number of coil turns. If the number of coil turns is smaller, the coil resistance is smaller, and the power consumption is greater under DC conditions.

[0057] The repulsive force generated by the coil is controlled by instantaneous current. If the coil inductance is larger, the instantaneous current is too short to ensure that the coil generates the maximum repulsive force. If the number of coil turns is too small, the DC current when generating the attractive magnetic field will be too large, and the coil will also heat up.

[0058] In order to improve the above problems, the present application provides a controllable force button 100 to improve the power consumption and heat generation problems of existing magnetic buttons.

[0059] Please refer to Figure 1 , Figure 1 1 shows a schematic diagram of the appearance of a controllable force button 100 provided in this embodiment; Figure 2 A partial structural schematic diagram of the controllable force button 100 provided in this embodiment is shown. In a possible implementation, the controllable force button 100 provided in this embodiment of the present invention includes a central axis 110, a first magnetic element 120 and a coil assembly 130.

[0060] The central axis 110 , the first magnetic element 120 and the coil assembly 130 are coaxially arranged. The first magnetic element 120 is sleeved on the central axis 110 and can move along with the movement of the central axis 110 .

[0061] The outer diameter of the first magnetic element 120 is smaller than the inner diameter of the coil assembly 130. When the central shaft 110 is pressed by an external force and reciprocates toward the coil assembly 130, the first magnetic element 120 reciprocates along the axis of the central shaft 110 within the coil assembly 130. For example, when the central shaft 110 is not subjected to a force, the first magnetic element 120 is located outside the coil assembly 130. When the central shaft 110 is pressed by an external force, the first magnetic element 120 enters the coil assembly 130.

[0062] The coil group 130 is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element 120; wherein, the coil group 130 includes multiple coils, and when the central axis 110 is pressed by an external force, one of the multiple coils generates a repulsive magnetic field, and after a preset time, the multiple coils are connected in series to generate an attractive magnetic field.

[0063] See also Figure 3 , Figure 3 A schematic diagram of the force-controlled button 100 being pressed is shown. In the force-controlled button 100 provided in this embodiment, when the central shaft 110 is pressed by an external force, a single coil first generates a magnetic field, reducing the coil length (number of turns) and coil inductance. This results in a faster current rise and a stronger magnetic field within the same timeframe. After a preset duration, multiple coils simultaneously generate an attractive magnetic field, reducing the current while maintaining the magnetic field strength. Furthermore, reducing the current also prevents inductor heating.

[0064] The preset duration can be used to control the triggering force of the key. In a possible implementation, the preset duration is in milliseconds. The longer the duration is, the greater the triggering force is, and vice versa.

[0065] The multiple coils of the coil group 130 can be arranged in a stacked manner or nested inside and outside. When the multiple coils are stacked, the coil that generates a repulsive magnetic field is the top coil, that is, the coil close to the first magnetic element 120; when the multiple coils are nested inside and outside, the coil that generates a repulsive magnetic field is the inner coil.

[0066] The following describes the arrangement of the coil assembly 130 in conjunction with the accompanying drawings. Figure 2 and Figure 3 In one possible implementation, the coil assembly 130 includes a first coil 131 and a second coil 132 , wherein the first coil 131 includes a first coil first end and a first coil second end; the second coil 132 includes a second coil first end and a second coil second end.

[0067] The first coil 131 and the second coil 132 are stacked, wherein the first coil 131 is arranged on a side close to the first magnetic element 120, and the second coil 132 is arranged on a side away from the first magnetic element 120, and the first end of the second coil 132 is adjacent to the second end of the first coil 131.

[0068] See Figure 4 The first end of the first coil forms a first pin 133 , the second end of the first coil is electrically connected to the first end of the second coil to form a second pin 134 ; the second end of the second coil forms a third pin 135 .

[0069] In one possible implementation, the central axis 110 is pressed by an external force to perform reciprocating motion toward the coil group 130, including a first stroke and a second stroke, wherein the first stroke is the stroke in which the central axis 110 moves toward the coil group 130, and the second stroke is the stroke in which the central axis 110 moves away from the coil group 130.

[0070] When the middle shaft 110 is pressed by an external force to perform the first stroke, a variable current flows in from the second pin 134 and flows out from the first pin 133 , and the first coil 131 alone generates a repulsive magnetic field.

[0071] After a preset time, the direction of the current is changed, and the variable current is controlled to flow into the first pin 133 and out of the third pin 135 , and the first coil 131 and the second coil 132 are connected in series and generate an attractive magnetic field at the same time.

[0072] In a possible implementation, the first coil 131 and the second coil 132 may be nested inside and outside, wherein the first coil 131 is arranged on the inside and the second coil 132 is arranged on the outside.

[0073] When the central shaft 110 is pressed by an external force, a variable current flows into the second pin 134 and out of the first pin 133, causing the inner first coil 131 to generate a repulsive magnetic field. After a predetermined time interval, the inner first coil 131 and the outer second coil 132 are connected in series to simultaneously generate an attractive magnetic field that acts on the first magnetic element 120.

[0074] Because the coil primarily exhibits inductive characteristics, the current changes over time during power-up. The greater the inductance, the longer the charging time. However, the inductance is proportional to the number of turns in the coil. The smaller the number of turns, the lower the coil's resistance, resulting in greater power consumption under DC conditions. Repulsion is controlled by instantaneous current. If the coil's inductance is greater, a short instantaneous current cannot guarantee the coil's maximum repulsive force. If the number of turns is too small, the current will be too high under high-attraction DC drive, and the coil will also heat up excessively. The controllable force button 100 provided in this application can produce a sense of movement by first controlling the first coil 131 to generate repulsion and then increasing the number of turns. This allows both the first coil 131 and the second coil 132 to simultaneously generate attraction, creating a sense of movement. Furthermore, when generating repulsion, only one coil is energized to generate a repulsive magnetic field. This allows the current to rise faster and the magnetic force to be greater over the same period of time. Connecting two coils in series during attraction reduces the current while maintaining the magnetic field strength.

[0075] In one possible implementation, see Figure 5 The central axis 110 includes a first section 111, a second section 112, and a first stopper 113. The first section 111, the first stopper 113, and the second section 112 are arranged along the axis of the central axis 110. The first section 111 and the second section 112 are respectively arranged on both sides of the first stopper 113. The second section 112 faces the coil assembly 130, and the first section 111 is away from the coil assembly 130.

[0076] Please refer to Figure 3 and Figure 5The first magnetic element 120 is sleeved on the first section 111, wherein the length of the first magnetic element 120 is smaller than the length of the first section 111, and the end of the first section 111 (i.e., the end of the first section 111 away from the first limiting member 113) passes through the first magnetic element 120 and is exposed outside.

[0077] In one possible implementation, see Figure 6 The second section 112 of the central axis 110 is provided with a return spring 114. When the central axis 110 is pressed, the central axis 110 enters the first stroke; once the external force is removed, it can bounce back and return to the second stroke under the repulsive force of the coil group 130 and the return spring 114.

[0078] In another implementation of this embodiment, the push switch further includes a second magnetic element 121 . The second magnetic element 121 is disposed on the first section 111 of the central axis 110 . The first magnetic element 120 can generate a repulsive force with the second magnetic element 121 .

[0079] In this embodiment, the central axis 110 , the first magnetic element 120 , the coil assembly 130 , the return spring 114 , etc. form a key switch of the controllable force key 100 . The controllable force key 100 further includes a housing in which the key switch is disposed.

[0080] See Figure 7 , Figure 7 The figure shows an assembly diagram of the controllable force button 100 provided in this embodiment. In a possible implementation, the housing includes a bottom cover 140 and an upper cover 150 .

[0081] Please refer to Figure 7 and Figure 8 , Figure 8 The diagram shows the assembly of the bottom cover 140 and the upper cover 150 , wherein the bottom cover 140 is recessed to form a mounting portion 141 , and the key switch is arranged on the mounting portion 141 ; the upper cover 150 cooperates with the bottom cover 140 to cover the key switch in the mounting portion 141 .

[0082] Please refer to Figure 1 、 Figure 7 and Figure 8 The upper cover 150 is provided with a through hole 151 . When the upper cover 150 is covered on the bottom cover 140 , one end of the central axis 110 away from the coil assembly 130 (ie, the end of the first section 111 ) is exposed through the through hole 151 .

[0083] Please refer to Figure 1 、 Figure 7 and Figure 8In one possible implementation, the controllable force button 100 further includes a button 170, which is disposed at an end of the central axis 110 away from the coil assembly 130 (i.e., the end of the first section 111); when the upper cover 150 is covered on the bottom cover 140, the button 170 is exposed through the through hole 151.

[0084] It can be understood that a second limiting member is provided on the button 170 , and the second limiting member is used to limit the button 170 inside the upper cover 150 to prevent the button 170 from being completely separated from the upper cover 150 .

[0085] Please refer to Figure 7 and Figure 9 In one possible implementation, the controllable force button 100 further includes a control circuit board 160, on which a control chip 162 and a trigger module 161 are provided, and the trigger module 161 is electrically connected to the input end of the control chip 162; the control chip 162 further includes a plurality of IO ports, which are electrically connected to the coil group 130; and are used to output a variable current to the coil group 130, so that the coil group 130 generates a corresponding magnetic field according to the variable current.

[0086] The trigger module 161 is configured to generate a trigger signal when the intermediate shaft 110 is pressed by an external force and transmit the trigger signal to the control chip 162. The control chip 162 is configured to output a variable current to the coil assembly 130 based on the trigger signal, so that the coil assembly 130 generates an attractive magnetic field or a repulsive magnetic field based on the variable current to act on the first magnetic element 120.

[0087] Please refer to Figure 1 and Figure 9 In a possible implementation, taking the coil assembly 130 including a first coil 131 and a second coil 132 as an example, in this embodiment, the first coil 131 and the second coil 132 include three pins, so the control chip 162 is electrically connected to the coil assembly 130 through three component pins 136, wherein the first component pin 136 is electrically connected to the first pin 133, the second component pin 136 is electrically connected to the second pin 134, and the third component pin 136 is electrically connected to the third pin 135.

[0088] When the trigger module 161 outputs a trigger signal to the control chip 162 , the IO port of the control chip 162 outputs a variable current to the coil assembly 130 through the element pin 136 , so that the coil assembly 130 generates a corresponding magnetic field acting on the first magnetic element 120 .

[0089] The trigger module 161 may adopt a non-contact trigger, such as a light-sensitive trigger. In a possible implementation, the trigger module 161 includes a light-sensitive element and an emitting light source corresponding to the light-sensitive element.

[0090] The photosensor is electrically connected to the input terminal of the control chip 162. The central axis 110 defines a light-transmitting slot that allows light from the emitting light source to pass through. For example, the light-transmitting slot can be located in the second section 112 of the central axis 110. When the central axis 110 is forced to move toward the coil assembly 130, light from the emitting light source passes through the light-transmitting slot through the central axis 110 and reaches the photosensor, causing the photosensor to generate a trigger signal. The emitting light source can be located within the central axis 110 or within the bottom cover 140, and this embodiment is not limited thereto.

[0091] In another possible implementation, the trigger module 161 may also employ a contact-type trigger, using a spring, a soft film, or a contact switch to generate a trigger signal. For example, the trigger module 161 may include a first metal spring connected to an input terminal of the control chip 162. A second metal spring corresponding to the first metal spring is disposed at one end of the central axis 110 near the coil assembly 130. When the central axis 110 is forced to move toward the coil assembly 130, the first metal spring contacts the second metal spring, generating a trigger signal.

[0092] This embodiment also provides a control method for the controllable force button 100. Figure 9 , Figure 10 A flow chart of a method for controlling the controllable force button 100 is shown, and the method includes the following steps.

[0093] Step S210: Detect whether a trigger signal is generated.

[0094] If a trigger signal is detected, step S220 is executed; if no trigger signal is detected, the detection is repeated.

[0095] Step S220 : When the trigger signal is detected, a first current is output to the first coil 131 to enable the first coil 131 to generate a repulsive magnetic field.

[0096] Step S230 : After a preset time, output a second current to the first coil 131 and the second coil 132 so as to generate an attractive magnetic field between the first coil 131 and the second coil 132 , wherein the second current is in the opposite direction to the first current.

[0097] Step S240: When the trigger signal is not detected, stop outputting the second current and re-detect the trigger signal.

[0098] In summary, the present invention provides a controllable force button 100, including a central axis 110, a first magnetic element 120 and a coil group 130; the central axis 110, the first magnetic element 120 and the coil group 130 are coaxially arranged; the first magnetic element 120 is sleeved on the central axis 110, and the outer diameter of the first magnetic element 120 is smaller than the inner diameter of the coil group 130; when the central axis 110 is pressed by an external force to reciprocate toward the coil group 130, the first magnetic element 120 reciprocates along the axial direction of the central axis 110 in the coil group 130; the coil group 130 is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element 120; wherein the coil group 130 includes multiple coils, and when the central axis 110 is pressed by an external force, one of the multiple coils generates a repulsive magnetic field, and after a preset time, the multiple coils are connected in series to generate an attractive magnetic field. By reasonably setting the number of coils that generate repulsive and attractive forces, when a key is pressed, repulsive force is generated by one coil, which can shorten the response time and increase the strength of the repulsive force. When suction is generated, multiple coils are connected in series to generate an attractive magnetic field, which can reduce the current while ensuring the size of the magnetic field and reducing the heating of the coil.

[0099] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0100] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A controllable force button, characterized in that: The controllable force button includes a central axis, a first magnetic element and a coil assembly; The central axis, the first magnetic element and the coil group are coaxially arranged; The first magnetic element is sleeved on the central axis, and the outer diameter of the first magnetic element is smaller than the inner diameter of the coil assembly; When the central axis is pressed by an external force to reciprocate toward the coil group, the first magnetic element reciprocates along the axis of the central axis within the coil group; The coil assembly is used to generate an attractive magnetic field or a repulsive magnetic field according to a variable current to act on the first magnetic element; The coil group includes a plurality of coils. When the central axis is pressed by an external force, one of the plurality of coils generates the repulsive magnetic field. After a preset time, the plurality of coils are connected in series to generate the attractive magnetic field. The coil assembly includes a first coil and a second coil, wherein the first coil includes a first coil first end and a first coil second end; The second coil includes a second coil first end and a second coil second end; The first end of the first coil forms a first pin; the second end of the first coil is electrically connected to the first end of the second coil to form a second pin; the second end of the second coil forms a third pin; When the central axis is pressed by an external force, the variable current flows into the second pin and flows out of the first pin to generate the repulsive magnetic field; After a preset time period, the variable current flows into the first pin and flows out of the third pin to generate the attractive magnetic field.

2. The controllable force button according to claim 1, characterized in that: The first coil and the second coil are stacked.

3. The controllable force button according to claim 1, characterized in that: The first coil and the second coil are nested inside and outside.

4. The controllable force button according to claim 1, characterized in that: The central axis includes a first section, a second section and a first limiting member; The first section and the second section are respectively arranged on both sides of the first limiting member, the second section faces the coil group, and the first section is away from the coil group; The first magnetic element is sleeved on the first section, and the length of the first magnetic element is smaller than the length of the first section.

5. The controllable force button according to claim 1, characterized in that: The controllable force button also includes a bottom cover and an upper cover; The bottom cover is recessed to form a mounting portion, and the coil assembly, the central axis, and the first magnetic element are disposed on the mounting portion; The upper cover cooperates with the bottom cover to cover the coil assembly, the central axis and the first magnetic element within the mounting portion; The upper cover is provided with a through hole. When the upper cover is covered on the bottom cover, one end of the central axis away from the coil assembly is exposed through the through hole.

6. The controllable force button according to claim 5, characterized in that: The controllable force key further comprises a button, and the button is arranged at an end of the central axis away from the coil assembly; When the upper cover is covered on the bottom cover, the button is exposed through the through hole.

7. The controllable force button according to claim 5, characterized in that: The controllable force button further includes a control circuit board, on which a control chip and a trigger module are provided, and the trigger module is electrically connected to an input terminal of the control chip; The control chip further includes a plurality of IO ports, wherein the IO ports are electrically connected to the coil assembly; The trigger module is used to generate a trigger signal when the central axis is pressed by an external force, and transmit the trigger signal to the control chip; The control chip is used to output the variable current to the coil group according to the trigger signal, so that the coil group generates an attractive magnetic field or a repulsive magnetic field according to the variable current to act on the first magnetic element.

8. The controllable force button according to claim 7, wherein the trigger module comprises a photosensitive element and a light source corresponding to the photosensitive element; The photosensitive element is electrically connected to the input terminal of the control chip; The central axis is provided with a light-transmitting groove that allows light from the emitted light source to pass through; When the central axis is forced to move toward the coil assembly, the light from the emitting light source passes through the light-transmitting slot and reaches the photosensitive element, so that the photosensitive element generates a trigger signal.

9. The controllable force button according to claim 7, characterized in that: The trigger module includes a first metal spring, which is connected to the input end of the control chip. A second metal spring corresponding to the first metal spring is provided at one end of the central axis close to the coil group. When the central axis is forced to move toward the coil group, the first metal spring contacts and the second metal spring contacts and conducts to generate a trigger signal.

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