Magnetic Axis Key

Abstract

To provide a magnetic axis key with significantly improved usability. [Solution] The magnetic shaft key includes a shell 1 and a movable shaft 2, a through hole 3 is opened on the top wall of the shell, and the movable shaft is inserted into the through hole so that it can move back and forth. This magnetic shaft key uses a more reasonable magnet layout, and when there is no external force, the movable magnet can drive the movable shaft to reset, and the height of the magnet can be adjusted to realize a stepped or linear feel.

Description

[Technical field]

[0001] The present invention relates to the technical field of keyboard keys, and in particular to magnetic axis keys. [Background technology]

[0002] Physical keys are a kind of very important input / output device that is widely used in electronic devices such as mobile phones and computers.

[0003] Existing keys are usually spring-mounted, which means that in mechanical keyboards, springs are used to provide the rebound strength and tactile feel of the keys. When spring-mounted keys are used, a certain amount of noise will be generated when the keys are pressed, and the springs there are required to withstand long periods of key presses and releases as the rebound device of the keys, which may cause the springs to fatigue and lead to life problems; the elasticity of the springs will gradually weaken over a long period of time, which may affect the performance of the keyboard; some keys use magnets instead of springs, but the rationality of the layout will affect the feel of the keys, so the inventors designed magnetic axis keys. Summary of the Invention [Problem to be solved by the invention]

[0004] The invention objective is to provide a magnetic shaft key that solves the technical problems presented in the background art. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention is realized by the following technical solution: the magnetic shaft key includes a shell and a movable shaft, a through hole is opened on the top wall of the shell, the movable shaft is inserted into the through hole and can move back and forth, an insertion hole 1 is opened on the movable shaft, a movable magnet is inserted into the insertion hole 1, the top wall of the shell further has insertion holes 2 on both sides of the through hole, and fixed magnets are inserted into both insertion holes 2, the top ends of both side walls of the movable shaft are stepped, and a blocking block is provided at the top end of the through hole, which cooperates with the step on the side wall of the movable shaft to restrict the movable shaft from leaving the top of the through hole;

[0006] The two fixed magnets have opposite polarity to the opposing sides on the movable magnet, and a conductive mechanism is further provided on the shell for sensing the movement of the movable shaft and emitting an electrical signal.

[0007] Preferably, the conductive mechanism includes a circuit board and a conductive adhesive, the bottom of the shell is open, the circuit board is provided at the bottom of the shell, the conductive adhesive is provided at the bottom end of the movable shaft, and a PCB line is provided at a position corresponding to the conductive adhesive on the circuit board, and the conductive adhesive contacts the PCB line to form a path for realizing on / off.

[0008] Preferably, the conductive mechanism includes an infrared emitting element, an infrared receiving element and a shielding plate, the infrared emitting element and the infrared receiving element are both provided on the inner wall of the housing, the shielding plate is fixedly connected to the movable shaft and positioned between the infrared receiving element and the infrared emitting element to shield light, and when the movable shaft moves downward, it emits light, and the infrared receiving element receives the light and generates a signal.

[0009] Preferably, the conducting mechanism is a Hall element, the Hall element being provided within the shell, and when the movable shaft moves downward, a movable magnet approaches the Hall element, changing the magnetic field and generating an electric signal.

[0010] Preferably, the Hall element is fixedly attached to the bottom wall of the shell at a position corresponding to the movable shaft.

[0011] Preferably, the conductive mechanism further includes a reinforcing magnet, the reinforcing magnet being provided at a bottom end of the movable shaft, the bottom end of the reinforcing magnet having the same magnetic pole as the bottom end of the movable magnet to reinforce the magnetic field.

[0012] Preferably, a through hole is provided in the center of the movable magnet, and a protrusion is provided at a position corresponding to the through hole on the inner wall of the insertion hole 1, the protrusion is inserted into the through hole to fix the movable magnet, and the protrusion surface is spherical.

[0013] Preferably, a limiting block is provided on the inner wall of the insertion hole 2, and the limiting block contacts the bottom wall of the fixed magnet. Effect of the Invention

[0014] According to the above technical solution, the present invention has the following beneficial effects:

[0015] This magnetic shaft key uses a more reasonable magnet layout, and the magnetic attraction of the fixed magnet and the movable magnet always maintains attraction. When the movable shaft is in the reset position and the movable shaft is pressed down, the magnetic attraction of the fixed magnet and the movable magnet is always maintained, and the fixed magnet always attracts the movable magnet for resetting. When there is no external force, the movable magnet can drive the movable shaft for resetting. By adjusting the height of the magnet, a stepped or linear feel can be achieved, which greatly improves the comfort of use. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a schematic diagram showing the internal structure of the first embodiment of the present invention. [Diagram 2] FIG. 2 is a side cross-sectional view of the first embodiment of the present invention. [Diagram 3] FIG. 2 is a schematic diagram showing the internal structure of the second embodiment of the present invention; [Figure 4] FIG. 4 is a schematic diagram showing the internal structure of the third embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic diagram showing the internal structure of the fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] 1 to 5, the present invention provides the following technical solution: the magnetic shaft key includes a shell 1 and a movable shaft 2, a through hole 3 is opened on the top wall of the shell 1, the movable shaft 2 is inserted into the through hole 3 to be reciprocating, an insertion hole 14 is opened on the movable shaft 2, a movable magnet 5 is inserted into the insertion hole 14, insertion holes 26 are further opened on both sides of the through hole 3 on the top wall of the shell 1, fixed magnets 7 are inserted into both insertion holes 26, the top ends of both side walls of the movable shaft 2 are stepped, and a blocking block 8 is provided at the top end in the through hole 3, and the blocking block 8 cooperates with the step on the side wall of the movable shaft 2 to restrict the movable shaft 2 from leaving the upper part of the through hole 3;

[0018] In the accompanying drawings of the specification of this application, it is shown that the movable magnet 5 and the fixed magnet 7 are at the same height when the blocking block 8 contacts the movable shaft 2, but in actual production, the heights of the fixed magnet 7 and the movable magnet 5 may be adjusted to obtain different pressing feel, and the two fixed magnets 7 have opposite polarity to the opposite sides on the movable magnet 5, and a conductive mechanism 9 is further provided on the shell 1 for sensing the movement of the movable shaft 2 and emitting an electrical signal.

[0019] A through hole 18 is opened in the center of the movable magnet 5, and a protrusion 19 is provided at a position corresponding to the through hole 18 on the inner wall of the insertion hole 14. The protrusion 19 is inserted into the through hole 18 to fix the movable magnet 5, and the surface of the protrusion 19 is spherical.

[0020] A limiting block 20 is provided on the inner wall of the insertion hole 26 , and the limiting block 20 comes into contact with the bottom wall of the fixed magnet 7 .

[0021] In Example 1, referring to Figures 1 and 2, the conduction mechanism 9 includes a circuit board 10, a conductive adhesive 11 and a PCB line 12, the bottom of the shell 1 is open, the circuit board 10 is provided at the bottom of the shell 1, the conductive adhesive 11 is provided at the bottom end of the movable shaft 2, and the PCB line 12 is provided at a position corresponding to the conductive adhesive 11 on the circuit board 10, and the conductive adhesive 11 contacts the PCB line 12 to form a path for realizing on and off.

[0022] This embodiment adopts a more traditional conductive method, which results in lower production costs.

[0023] In the second embodiment, referring to FIG. 3, the conductive mechanism 9 includes an infrared emitting element 13, an infrared receiving element 14 and a shielding plate 15. The infrared emitting element 13 and the infrared receiving element 14 are both provided on the inner wall of the shell 1. The shielding plate 15 is fixedly connected on the movable shaft 2 and located between the infrared receiving element 14 and the infrared emitting element 13 to shield light. When the movable shaft 2 moves downward, it emits light, and the infrared receiving element 14 receives the light and generates a signal. The shielding plate 15 used in this embodiment is a plate with a rod-shaped hole. When the movable shaft 2 moves downward through the shielding plate 15, When the movable shaft 2 is driven to move in this manner, the rod-shaped hole is positioned between the infrared receiving element 14 and the infrared emitting element 13 and does not block the light, and when the movable shaft 2 is reset, the blocking plate 15 blocks the light again, thereby realizing the on / off switching of the key. In order to achieve the above functions, the blocking plate 15 may be designed in different forms, and it is also possible to provide a reflective mirror on the blocking plate 15 to reflect the light so that the infrared receiving element 14 receives the light. The ultimate objective, although details will be omitted here, is to associate the up and down movement of the movable shaft 2 with whether the infrared receiving element 14 receives the light.

[0024] In this embodiment, the pressing signal is identified by an infrared sensing method, which has higher reliability, stability and quick response.

[0025] In the third embodiment, referring to FIG. 4, the conductive mechanism 9 is a Hall element 16, which is provided in the shell 1. When the movable shaft 2 moves downward, the movable magnet 5 approaches the Hall element 16, which changes the magnetic field and generates an electric signal.

[0026] The Hall element 16 is fixedly attached to the bottom wall of the shell 1 at a position corresponding to the movable shaft 2 .

[0027] In this embodiment, the pressing signal is identified by the Hall element, and different pressing depths of the movable shaft can cause the Hall element to generate different signal strengths, thereby improving the functionality of the key.

[0028] In Example 4, referring to FIG. 5 , this example is based on Example 3, and the conductive mechanism 9 further includes a reinforcing magnet 17, which is disposed at the bottom end of the movable shaft 2, and the bottom end of the reinforcing magnet 17 has the same magnetic pole as the bottom end of the movable magnet 5, so as to reinforce the magnetic field, thereby preventing the movable magnet 5 from being weakened by the obstruction of the movable shaft 2 and affecting the operation of the Hall element.

[0029] Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited by these embodiments set forth in this specification, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. [Explanation of symbols]

[0030] 1 shell 2 Movable axis 3 Through holes 4 Insertion hole 1 5 Moving magnet 6 Insertion hole 2 7 Fixed Magnet 8. Blocking Block 9 Conduction mechanism 10 Circuit Board 11 Conductive adhesive 12 PCB lines 13 Infrared emitting element 14 Infrared receiving element 15 Shielding plate 16 Hall element 17 Reinforcing magnet 18 through holes 19 Protrusion 20 Restriction Blocks

Claims

1. The invention comprises a shell and a movable shaft, a through hole is provided in a top wall of the shell, the movable shaft is inserted into the through hole and is capable of reciprocating motion, an insertion hole 1 is provided on the movable shaft, a movable magnet is inserted into the insertion hole 1, insertion holes 2 are provided in the top wall of the shell on both sides of the through hole, fixed magnets are inserted into both insertion holes 2, the top ends of both side walls of the movable shaft are stepped, and a blocking block is provided at the top end of the through hole, which cooperates with the step on the side wall of the movable shaft to restrict the movable shaft from leaving above the through hole, The magnetic shaft key is characterized in that the two fixed magnets have opposite polarity to the opposing sides on the movable magnet, and a conductive mechanism is further provided on the shell for sensing the movement of the movable shaft and emitting an electrical signal.

2. The magnetic shaft key according to claim 1, characterized in that the conductive mechanism includes a circuit board and a conductive adhesive, the bottom of the shell is open, the circuit board is provided at the bottom of the shell, the conductive adhesive is provided at the bottom end of the movable shaft, a PCB line is provided at a position corresponding to the conductive adhesive on the circuit board, and the conductive adhesive contacts the PCB line to form a path for realizing on / off.

3. The magnetic shaft key according to claim 1, characterized in that the conductive mechanism includes an infrared emitting element, an infrared receiving element and a shielding plate, the infrared emitting element and the infrared receiving element are both provided on the inner wall of the housing, the shielding plate is fixedly connected to the movable shaft and is located between the infrared receiving element and the infrared emitting element to shield light, when the movable shaft moves downward, it emits light, and the infrared receiving element receives the light and generates a signal.

4. 2. The magnetic shaft key according to claim 1, wherein the conductive mechanism is a Hall element, the Hall element is provided within the shell, and when the movable shaft moves downward, the movable magnet approaches the Hall element, causing a change in the magnetic field to generate an electric signal.

5. 5. The magnetic shaft key according to claim 4, wherein the Hall element is fixedly attached to a position corresponding to the movable shaft of the bottom wall inside the shell.

6. 6. The magnetic shaft key of claim 5, wherein the conductive mechanism further includes a reinforcing magnet, the reinforcing magnet being provided at a bottom end of the movable shaft, the bottom end of the reinforcing magnet having the same magnetic pole as the bottom end of the movable magnet to reinforce the magnetic field.

7. 7. The magnetic shaft key according to claim 6, wherein a through hole is provided in the center of the movable magnet, a protrusion is provided at a position corresponding to the through hole on the inner wall of the insertion hole 1, the protrusion is inserted into the through hole to fix the movable magnet, and the protrusion surface is spherical.

8. 8. The magnetic shaft key according to claim 7, characterized in that a limiting block is provided on the inner wall of the insertion hole (2), and the limiting block contacts the bottom wall of the fixed magnet.

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