Inductive keyboard device

Abstract

An inductance type keyboard device comprises a circuit board, an annular inductor and keys. The circuit board is provided with an assembling area, and the assembling area is provided with holes. The annular inductor is arranged in the hole, and the annular inductor surrounds to form an axial induction channel. The key comprises a key cap and a magnetic part, the key cap is arranged above the assembly area and located at the height position, the magnetic part is connected to the key cap, and the position of the magnetic part corresponds to the position of the axial induction channel. Wherein the key cap can move from the height position to the direction of the circuit board, and in the moving process of the key cap, the key cap drives the magnetic part to axially move in the axial induction channel of the annular inductor.

Description

Technical Field

[0001] The present invention relates to a keyboard device, and more particularly to an inductive keyboard device. Background Art

[0002] The keyboard is one of the very common input devices for current electronic devices. For computer products commonly encountered in daily life (such as notebook computers, desktop computers or tablet computers), or large-scale control devices or processing devices in industry, keyboards are mostly used for operation or text input.

[0003] Most of the keys of currently common keyboards can only be switched between two states. Taking the membrane keyboard as an example, generally, a membrane keyboard has a plurality of keys and a membrane circuit board. When each key is pressed, the circuit on the membrane circuit board can be conducted to determine that the key is in the pressed state. When each key is released, the circuit on the membrane circuit board is disconnected to determine that the key is in the unpressed state. Summary of the Invention

[0004] In one embodiment, an inductive keyboard device is provided, which includes a circuit board, a ring inductor and a key. The circuit board has an assembly area, and the assembly area has a hole. The ring inductor is disposed inside the hole, and the ring inductor surrounds to form an axial induction channel. The key includes a keycap and a magnetic member. The keycap is disposed above the assembly area and at a height position. The magnetic member is connected to the keycap, and the position of the magnetic member corresponds to the position of the axial induction channel. Wherein, the keycap can selectively move towards the circuit board from the height position, and during the movement of the keycap, the keycap drives the magnetic member to axially displace in the axial induction channel of the ring inductor.

[0005] In one or more embodiments, when the keycap is at the height position, a partial area of the magnetic member is located inside the axial induction channel.

[0006] In one or more embodiments, the key includes a key post. The keycap has an inner surface facing the circuit board. The key post is connected to the inner surface. The key post has a bottom and a circumferential surface. The magnetic member is connected to the bottom or the circumferential surface.

[0007] In one or more embodiments, the center of the bottom of the key post has a convex post, and the magnetic member is sleeved outside the convex post.

[0008] In one or more embodiments, the axial induction channel has a top end and a bottom end. The top end is closer to the keycap than the bottom end. During the movement of the keycap, the magnetic member enters the inside of the axial induction channel from the top end.

[0009] In one or more embodiments, the inductive keyboard device further includes a base. The base is disposed in the axial induction channel. The base includes an axial cylinder. During the movement of the keycap, the magnetic member axially displaces in the axial cylinder.

[0010] In one or more embodiments, the base includes an outer ring wall that surrounds the outer periphery of the axial cylinder, and there is an annular groove between the outer ring wall and the axial cylinder. There is also a magnetic spring between the circuit board and the keycap. One end of the magnetic spring abuts against the keycap, and the other end of the magnetic spring is located in the annular groove.

[0011] In one or more embodiments, the inductive keyboard device further includes a magnetic plate member that is connected to the keycap and is located around the magnetic member. During the movement of the keycap, the keycap drives the magnetic plate member to approach the annular inductor.

[0012] In one or more embodiments, the circuit board has a top surface and a bottom surface. An inductor coil is provided on the top surface, and the inductor coil is located between the top surface and the magnetic plate member. During the movement of the keycap, the keycap drives the magnetic plate member to approach the inductor coil.

[0013] In one or more embodiments, the axial induction channel has a top end and a bottom end. The top end is closer to the keycap than the bottom end. When the keycap is at the height position, the magnetic member is located inside the axial induction channel. During the movement of the keycap, the magnetic member leaves the inside of the axial induction channel from the bottom end.

[0014] In one or more embodiments, the circuit board has a top surface and a bottom surface. The magnetic member is also connected to the magnetic plate member. When the keycap is at the height position, the magnetic plate member is stacked on the bottom surface of the circuit board and is adjacent to the annular inductor. During the movement of the keycap, the magnetic plate member is displaced in a direction away from the circuit board.

[0015] In one or more embodiments, the circuit board is provided with an inductor coil, and the inductor coil is located between the bottom surface and the magnetic plate member.

[0016] In summary, for the inductive keyboard device according to the embodiments of the present invention, when the keycap is pressed and moves from the height position towards the circuit board, the keycap can drive the magnetic member to axially displace in the axial induction channel of the annular inductor, so that different inductance values can be continuously generated during the movement of the keycap, and the position of the keycap can be determined based on the change of the inductance value, thereby enabling more diverse operations to adapt to different users and usage scenarios. In addition, the change curve of the inductance value with the movement stroke of the keycap can be more linear, so as to provide more delicate and accurate control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a partial perspective view of an embodiment of the inductive keyboard device of the present invention.

[0018] Figure 2 is a partial exploded perspective view of the first embodiment of the inductive keyboard device of the present invention.

[0019] Figure 3 is a cross-sectional view of the first embodiment of the inductive keyboard device of the present invention.

[0020] Figure 4 2 is a schematic diagram of pressing the inductive keyboard device according to the first embodiment of the present invention.

[0021] Figure 5 It is a sensing curve diagram of the inductive keyboard device of the present invention.

[0022] Figure 6 is a cross-sectional view of a second embodiment of the inductive keyboard device of the present invention.

[0023] Figure 7 It is an exploded perspective view of the third embodiment of the inductive keyboard device of the present invention.

[0024] Figure 8 FIG. 4 is a cross-sectional view of a third embodiment of the inductive keyboard device of the present invention.

[0025] Figure 9 2 is a schematic diagram of pressing the inductive keyboard device according to the third embodiment of the present invention.

[0026] Figure 10 It is an exploded perspective view of a fourth embodiment of the inductive keyboard device of the present invention.

[0027] Figure 11 is a cross-sectional view of a fourth embodiment of the inductive keyboard device of the present invention.

[0028] Figure 12 2 is a schematic diagram of pressing the inductive keyboard device according to the fourth embodiment of the present invention. Figure 13 It is an exploded perspective view of a fifth embodiment of the inductive keyboard device of the present invention. Figure 14 is a cross-sectional view of a fifth embodiment of the inductive keyboard device of the present invention.

[0029] Figure 15 2 is a schematic diagram of pressing the inductive keyboard device according to the fifth embodiment of the present invention.

[0030] Explanation of symbols:

[0031] 1: Inductive keyboard device

[0032] 10: Circuit Board

[0033] 11: Assembly area

[0034] 12: Top surface

[0035] 13: Bottom surface

[0036] 14,14A: Inductor

[0037] 15,15A: Holes

[0038] 16: Assembly hole

[0039] 20, 20A: Ring-shaped inductor

[0040] 21: Axial induction channel

[0041] 211: Top end

[0042] 215: Bottom end

[0043] 22, 22a: Ring-shaped part

[0044] 30: Key

[0045] 31: Keycap

[0046] 311: Inner surface

[0047] 32, 32A: Key post

[0048] 321, 321A: Bottom

[0049] 322, 322A: Convex post

[0050] 325: Circumferential surface

[0051] 326: Extension plate

[0052] 33: Frame

[0053] 331: Guide groove

[0054] 35, 35A, 35B: Magnetic part

[0055] 36, 36A: Magnetic plate part

[0056] 37: Spring

[0057] 40: Base

[0058] 41: Axial cylinder

[0059] 42: Ring-shaped groove

[0060] 45: Outer ring wall Detailed implementation mode

[0061] The following presents various embodiments for detailed description. However, the embodiments are only used as examples for illustration and will not limit the scope of protection of the present creation. In addition, some components are omitted in the diagrams of the embodiments to clearly show the technical features of the present creation. The same reference numerals will be used to represent the same or similar components in all the diagrams.

[0062] Figure 1 It is a partial perspective view of an embodiment of the inductive keyboard device of the present invention. Figure 2 It is a partial exploded perspective view of the first embodiment of the inductive keyboard device of the present invention. As Figure 1 And Figure 2As shown, the inductive keyboard device 1 includes a circuit board 10, a ring-shaped inductor 20, and at least one key 30. In this embodiment, the number of keys 30 is multiple and they are arranged on the circuit board 10. In some embodiments, the inductive keyboard device 1 can be applied to various electronic products (such as input devices of desktop computers, notebook computers, or other electronic devices) for users to operate to generate corresponding signals.

[0063] As Figures 1 to 3 shown, the circuit board 10 has a top surface 12 and a bottom surface 13 that face each other. The top surface 12 has at least one assembly area 11 (such as Figure 2 the square area shown), that is to say, the assembly area 11 is a partial area of the top surface 12 of the circuit board 10. Among them, the number of assembly areas 11 is multiple to respectively supply multiple keys 30 for corresponding assembly.

[0064] Figure 3 It is a cross-sectional view of the first embodiment of the inductive keyboard device of the present invention. Figure 4 It is a pressing schematic diagram of the first embodiment of the inductive keyboard device of the present invention. As Figures 2 to 4 shown, taking one of the assembly areas 11 as an example, there is a hole 15 in the assembly area 11. In this embodiment, the hole 15 is a through hole and penetrates the top surface 12 and the bottom surface 13 of the circuit board 10. In other embodiments, the hole 15 can also be a slot hole and is recessed in the top surface 12 of the circuit board 10, which is not limited.

[0065] As Figures 2 to 4 shown, the ring-shaped inductor 20 is arranged inside the hole 15 of the circuit board 10, and the ring-shaped inductor 20 surrounds to form an axial induction channel 21. In this embodiment, the ring-shaped inductor 20 is a spiral coil. For example, the spiral coil can be bent and wound into a three-dimensional spiral shape through a wire (such as a copper wire or an aluminum wire). The axial induction channel 21 is the internal channel surrounded by the spiral coil. In addition, the ring-shaped inductor 20 can be electrically connected to a power supply or a circuit on the circuit board 10 to be powered by the power supply or the circuit board 10.

[0066] In some embodiments, the shapes of the above-mentioned ring-shaped inductor 20 and the hole 15 can correspond to each other. For example, the shapes of the ring-shaped inductor 20 and the hole 15 can be circular (as Figure 2 shown), oval, square, or other irregular shapes, but this is not limited. The shape of the ring-shaped inductor 20 and the shape of the hole 15 can also be different from each other.

[0067] As Figures 2 to 4As shown, each key 30 includes a keycap 31 and a magnetic member 35. The keycap 31 is disposed above the assembly area 11 and at a certain height position. The magnetic member 35 is connected to the keycap 31, and the position of the magnetic member 35 corresponds to the position of the axial induction channel 21 of the ring-shaped inductor 20. Among them, the magnetic member 35 can be made of a magnetic material such as iron, cobalt, nickel, or silicon steel, or a composite material, and the magnetic member 35 can be linked with the keycap 31. For example, the magnetic member 35 can be directly connected to the keycap 31 or indirectly connected to the keycap 31 via other components.

[0068] As Figures 2 to 4 shown, each key 30 includes a key post 32 and a frame 33. The keycap 31 has an inner surface 311 facing the circuit board 10. The key post 32 is connected to the inner surface 311, and the key post 32 has a bottom 321 and a circumferential surface 325. The frame 33 is disposed on the circuit board 10 and has a guide groove 331. The key posts 32 of each key 30 are slidably assembled in the guide groove 331 of the frame 33, so that the key posts 32 can vertically lift and slide relative to the guide groove 331. In this embodiment, a convex post 322 is provided at the center of the bottom 321 of the key post 32. Here, the magnetic member 35 is a hollow sleeve and is sleeved outside the convex post 322, so that the magnetic member 35 is indirectly connected to the keycap 31 via the key post 32, and the axial induction channel 21 of the ring-shaped inductor 20 is located at the center of the assembly area 11 to correspond to the position of the magnetic member 35.

[0069] As [[ID=--]]Figure 3 and Figure 4 shown, there is a reset member between the keycap 31 and the circuit board 10. For example, the reset member can be a rubber dome, a metal dome, a metal shrapnel, a spring, or a magnetic body, etc. In this embodiment, the reset member is a spring 37, and one end of the spring 37 abuts against the key post 32 and the keycap 31, so that the keycap 31 is located at the above-mentioned height position (as Figure 3 shown). When the keycap 31 is pressed by the user, the keycap 31 can move downward toward the circuit board 10, so that the spring 37 is pressed and stores elastic force. When the keycap 31 is released, the elastic force stored in the spring 37 can drive the keycap 31 to rise and return to the above-mentioned height position.

[0070] As Figure 3 and Figure 4 shown, when the keycap 31 is pressed by the user (as Figure 3 indicated by the arrow) and moves from the above-mentioned height position toward the circuit board 10, the keycap 31 can drive the magnetic member 35 to axially displace in the axial induction channel 21 of the ring-shaped inductor 20 (as Figure 4As shown (in this embodiment), for example, the axial induction channel 21 has a top end 211 and a bottom end 215. The top end 211 is closer to the keycap 31 relative to the bottom end 215. That is to say, the top end 211 and the bottom end 215 are spaced apart from each other and not in the same plane. When the keycap 31 is at the above height position, the magnetic member 35 is located above the circuit board 10, and a partial area (here it is the bottom) of the magnetic member 35 is located inside the axial induction channel 21. That is to say, the ring inductor 20 is located between the circuit board 10 and the partial area of the magnetic member 35. During the process of the keycap 31 moving towards the circuit board 10, the magnetic member 35 enters the inside of the axial induction channel 21 from the top end 211, so that the magnetic member 35 continuously induces with the ring inductor 20 to generate an inductance value.

[0071] In summary, during the process that the keycap 31 of the inductive keyboard device 1 according to the embodiment of the present invention is pressed and moves towards the circuit board 10, the keycap 31 can drive the magnetic member 35 to axially displace in the axial induction channel 21 of the ring inductor 20, so that different inductance values can be continuously generated during the movement of the keycap 31, and the position and pressing degree of the keycap 31 can be judged based on the change of the inductance value, and more diversified operations can be realized to adapt to different users and usage scenarios. For example, assuming that the total travel distance that the keycap 31 can move is 4 mm, when the keycap 31 moves 0.5 mm, 1 mm, 1.5 mm, and 2 mm, it can respectively induce with the ring inductor 20 to generate different inductance values, so that the position and pressing degree of the keycap 31 can be judged according to the change of the inductance value to perform different operations and controls respectively. For example, when the inductive keyboard device 1 is used for controlling the movement of a game character, the more the keycap 31 moves, the faster the movement speed of the game character.

[0072] In addition, please refer to Figure 5 As shown, by arranging the ring inductor 20 in the hole 15 of the circuit board 10, the inductive keyboard device 1 according to the embodiment of the present invention can make the change curve of the inductance value tend to be linear with the change of the movement stroke of the keycap 31, that is, the inductance value will change stably with the movement of the keycap 31 to provide more delicate and accurate control. For example, since the change curve of the inductance value tends to be linear (as Figure 5 shown), therefore, even if the keycap 31 moves a very short stroke (such as 0.2 mm), different inductance values can be significantly sensed, so as to perform more segmented operations and controls. That is to say, since the ring inductor 20 of the embodiment of the present invention is not arranged on the surface of the circuit board 10, the inductance value will not change violently when the magnetic member 35 approaches the ring inductor 20 and hardly change when the magnetic member 35 moves away from the ring inductor 20, thus affecting the delicacy and accuracy of control and other situations.

[0073] Such as Figure 3 and Figure 4As shown, in this embodiment, the inductive keyboard device 1 includes a base 40. The base 40 is disposed within the axial induction channel 21 of the annular inductor 20 and is located within the hole 15 of the circuit board 10. That is to say, in addition to being used for assembling the annular inductor 20, the hole 15 is also used for assembling the base 40. The base 40 includes an axial cylinder 41. One end of this axial cylinder 41 protrudes from the top end 211 of the axial induction channel 21, and the other end of the axial cylinder 41 protrudes from the bottom end 215 of the axial induction channel 21. When the keycap 31 is at the above height position (as Figure 3 shown), a partial area (here the bottom) of the magnetic member 35 is located inside the axial cylinder 41. During the process of the keycap 31 moving towards the circuit board 10 (as Figure 4 shown), the keycap 31 can drive the magnetic member 35 to axially displace within the axial cylinder 41, enabling the magnetic member 35, the keycap 31, and the key post 32 to be more stable during operation through the guidance of the axial cylinder 41.

[0074] Again, as Figure 3 and Figure 4 shown, in this embodiment, the base 40 further includes an outer ring wall 45. The outer ring wall 45 surrounds the outer periphery of the axial cylinder 41. Both the outer ring wall 45 and the axial cylinder 41 are disposed within the hole 15 of the circuit board 10, and there is an annular groove 42 between the outer ring wall 45 and the axial cylinder 41. One end of the spring 37 abuts against the key post 32 and the keycap 31, and the other end of the spring 37 is located within the annular groove 42, such that a partial area of the spring 37 is located within the axial induction channel 21 of the annular inductor 20. Among them, the spring 37 can be a magnetic spring. For example, the spring 37 can be made of a magnetic material or a composite material such as iron, cobalt, nickel, or silicon steel. Thus, during the process of the keycap 31 being pressed by the user and moving towards the circuit board 10, in addition to driving the magnetic member 35 to axially displace within the axial induction channel 21, the keycap 31 also compresses the spring 37 simultaneously, changing the volume of the spring 37 located within the axial induction channel 21, enabling both the magnetic member 35 and the spring 37 to interact with the annular inductor 20 to increase the inductance value, thereby improving the accuracy of judging the position of the keycap 31.

[0075] As Figures 2 to 4 shown, in some embodiments, the annular inductor 20 can be wound around the inner circumference of a ring member 22, and the annular inductor 20 is assembled to the hole 15 of the circuit board 10 via the ring member 22. Or, as Figure 6 shown, in another embodiment, the annular inductor 20 can also be wound around the outer periphery of a ring member 22a, which is not limited. The above-mentioned ring member 22 or ring member 22a can be made of a metal material to enhance the inductance effect.

[0076] Figure 7 is an exploded perspective view of the third embodiment of the inductive keyboard device of the present invention. Figure 8A cross-sectional view of the third embodiment of the inductive keyboard device of the present invention. Figure 9 A pressing schematic diagram of the third embodiment of the inductive keyboard device of the present invention. As Figures 7 to 9 shown, the difference between this embodiment and the above-mentioned first embodiment is at least that a magnetic plate 36 is further provided between the circuit board 10 and the keycap 31 in this embodiment. The magnetic plate 36 can be a plate made of a magnetic material or a composite material such as iron, cobalt, nickel, or silicon steel. The magnetic plate 36 is connected to the bottom 321 of the key post 32 and indirectly connected to the keycap 31. Here, the magnetic plate 36 is an annular plate and surrounds the magnetic member 35, but this is not limited. In addition, as Figure 8 and Figure 9 shown, during the process that the keycap 31 is pressed by the user (as shown by the arrow in Figure 8 ) and moves towards the circuit board 10, in addition to driving the magnetic member 35 to axially displace in the axial induction channel 21 and compressing the spring 37 to change the volume of the spring 37 in the axial induction channel 21, the keycap 31 also drives the magnetic plate 36 to approach the ring-shaped inductor 20 at the same time, so that the magnetic member 35, the spring 37, and the magnetic plate 36 all induce with the ring-shaped inductor 20 to further increase the inductance value, thereby improving the accuracy of the keycap 31 position judgment.

[0077] As Figures 7 to 9 shown, in this embodiment, the top surface 12 of the circuit board 10 also has an inductor coil 14, and the inductor coil 14 is located between the top surface 12 and the magnetic plate 36. Thereby, during the process that the keycap 31 is pressed and moves towards the circuit board 10, the keycap 31 can drive the magnetic plate 36 to approach the inductor coil 14 to generate an inductance effect and increase the inductance value, thereby improving the accuracy of the keycap 31 position judgment.

[0078] Figure 10 An exploded perspective view of the fourth embodiment of the inductive keyboard device of the present invention. Figure 11 A cross-sectional view of the fourth embodiment of the inductive keyboard device of the present invention. Figure 12 A pressing schematic diagram of the fourth embodiment of the inductive keyboard device of the present invention. As Figures 10 to 12 shown, the difference between this embodiment and the above-mentioned first embodiment is at least that the magnetic member 35A is connected to the circumferential surface 325 of the key post 32 instead of the bottom 321. Here, an extension plate 326 is integrally connected to the circumferential surface 325 of the key post 32, and the magnetic member 35A is a square sleeve and is sleeved outside the extension plate 326, but this is not limited. The magnetic member 35A can also be directly connected to the circumferential surface 325 of the key post 32. The ring-shaped inductor 20A and the hole 15A on the circuit board 10 are both adjacent to one side of the assembly area 11 to correspond to the position of the magnetic member 35A. In some embodiments, the shape of the hole 15A can be, for example, circular, oval, or rectangular (as shown in Figure 10As shown in the figure, etc., this is not limited. The shape surrounded by the ring-shaped inductor 20A can correspond to the shape of the hole 15A.

[0079] In addition, as Figures 10 to 12 shown, in this embodiment, the circuit board 10 further has an assembly hole 16 for assembling the base 40. That is to say, the assembly hole 16 and the hole 15A are located at different positions on the circuit board 10 and are not coaxially arranged.

[0080] Figure 13 is an exploded perspective view of the fifth embodiment of the inductive keyboard device of the present invention. Figure 14 is a cross-sectional view of the fifth embodiment of the inductive keyboard device of the present invention. Figure 15 is a pressing schematic diagram of the fifth embodiment of the inductive keyboard device of the present invention. As Figures 13 to 15 shown, the difference between this embodiment and the above-mentioned first embodiment is at least that the protruding post 322A extending from the bottom 321A of the key post 32A of the keycap 31 is hollow, and the protruding post 322A extends into the axial induction channel 21 of the ring-shaped inductor 20 on the circuit board 10. The magnetic member 35B is a solid column and is assembled inside the protruding post 322A. When the keycap 31 is at the above-mentioned height position (as Figure 14 shown), the magnetic member 35B is located inside the axial induction channel 21. During the process of the keycap 31 being pressed by the user and moving from the above-mentioned height position towards the circuit board 10 (as Figure 15 shown), the keycap 31 can drive the magnetic member 35B to leave the internal space of the axial induction channel 21 from the bottom end 215 and can also induce the ring-shaped inductor 20 to generate an inductance value. In addition, as Figure 15 shown, after the keycap 31 is pressed, a partial area (here it is the top) of the magnetic member 35B can be located inside the axial induction channel 21, but this is not limited. The whole of the magnetic member 35B can also be located outside the axial induction channel 21 after the keycap 31 is pressed.

[0081] As Figure 14 and Figure 15 shown, the top surface 12 of the circuit board 10 is closer to the keycap 31 than the bottom surface 13. The magnetic member 35B is also connected to a magnetic plate member 36A. The magnetic plate member 36A can be a plate member made of a magnetic conductive material or a composite material such as iron, cobalt, nickel or silicon steel. In this embodiment, the magnetic member 35B is integrally connected to the center of the magnetic plate member 36A. When the keycap 31 is at the above-mentioned height position (as Figure 14 shown), the magnetic plate member 36A is stacked on the bottom surface 13 of the circuit board 10 and is adjacent to the ring-shaped inductor 20. During the process of the keycap 31 being pressed by the user and moving from the above-mentioned height position towards the circuit board 10 (as Figure 15As shown, the keycap 31 can drive the magnetic plate member 36A to displace away from the circuit board 10, so that the magnetic plate member 36A induces with the ring-shaped inductor 20 to generate an inductance value.

[0082] For another example Figure 14 and Figure 15 As shown, in this embodiment, the circuit board 10 further has an inductor coil 14A. The inductor coil 14A is located between the bottom surface 13 and the magnetic plate member 36A. During the process that the keycap 31 is pressed by the user and moves towards the circuit board 10, the magnetic plate member 36A can also simultaneously induce with the inductor coil 14A to generate an inductance value, thereby improving the accuracy of the keycap 31 position judgment.

[0083] Although the technical content of the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the spirit of the present invention, makes some modifications and refinements, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to what is defined by the claims.

Claims

1. An inductive keyboard device, characterized in that, Comprising: A circuit board having an assembly area with holes; A ring-shaped inductor disposed inside the holes, the ring-shaped inductor surrounding to form an axial induction channel; And A key including a keycap and a magnetic member, the keycap being disposed above the assembly area and at a height position, the magnetic member being connected to the keycap, and the position of the magnetic member corresponding to the position of the axial induction channel; Wherein, the keycap can be selectively moved from the height position towards the circuit board, and during the movement of the keycap, the keycap drives the magnetic member to axially displace in the axial induction channel of the ring-shaped inductor.

2. The inductive keyboard device according to claim 1, wherein When the keycap is at the height position, a partial area of the magnetic member is located inside the axial induction channel.

3. The inductive keyboard device according to claim 1, wherein The key includes a key post, the keycap has an inner surface facing the circuit board, the key post is connected to the inner surface, the key post has a bottom and a circumferential surface, and the magnetic member is connected to the bottom or the circumferential surface.

4. The inductive keyboard device according to claim 3, wherein The center of the bottom of the key post has a convex post, and the magnetic member is sleeved outside the convex post.

5. The inductive keyboard device according to claim 1, wherein, The axial induction channel has a top end and a bottom end, the top end is closer to the keycap than the bottom end, and during the movement of the keycap, the magnetic member enters the inside of the axial induction channel from the top end.

6. The inductive keyboard device according to claim 1, wherein, The inductive keyboard device further includes a base disposed in the axial induction channel, the base includes an axial cylinder, and during the movement of the keycap, the magnetic member axially displaces in the axial cylinder.

7. The inductive keyboard device according to claim 6, characterized in that, The base includes an outer ring wall surrounding the outer circumference of the axial cylinder, and there is an annular groove between the outer ring wall and the axial cylinder. There is also a magnetic spring between the circuit board and the keycap, one end of the magnetic spring abuts against the keycap, and the other end of the magnetic spring is located in the annular groove.

8. The inductive keyboard device according to claim 1, wherein The inductive keyboard device further includes a magnetic plate member connected to the keycap and located around the magnetic member, and during the movement of the keycap, the keycap drives the magnetic plate member to approach the ring-shaped inductor.

9. The inductive keyboard device according to claim 8, characterized in that, The circuit board has a top surface and a bottom surface, and an inductor coil is disposed on the top surface, and the inductor coil is located between the top surface and the magnetic plate member. During the movement of the keycap, the keycap drives the magnetic plate member to approach the inductor coil.

10. The inductive keyboard device according to claim 1, wherein, The axial induction channel has a top end and a bottom end, the top end is closer to the keycap than the bottom end, when the keycap is at the height position, the magnetic member is located inside the axial induction channel, and during the movement of the keycap, the magnetic member leaves the inside of the axial induction channel from the bottom end.

11. The inductive keyboard device according to claim 10, characterized in that, The circuit board has a top surface and a bottom surface, the magnetic member is further connected to a magnetic plate member, when the keycap is at the height position, the magnetic plate member is stacked on the bottom surface of the circuit board and adjacent to the ring-shaped inductor, and during the movement of the keycap, the magnetic plate member is displaced in a direction away from the circuit board.

12. The inductive keyboard device according to claim 11, wherein, The circuit board is provided with an inductive coil, and the inductive coil is located between the bottom surface and the magnetic plate member.

Images