Adjustable keyboard

[0017] Example 1:

[0018] exist figure 1 , figure 2 In the first embodiment shown, the adjustable keyboard includes a base shell 1, a support plate 11 is formed at the lower part of the base shell 1, and a circuit film 2 is arranged on the support plate 11; each switch node of the circuit film 2 A button hole 10 is opened above, and a button 3 is arranged in the button hole 10; the button 3 includes a button magnet 31 magnetized in a vertical direction, and the bottom of the button 3 is provided with a conductive rubber 32; the conductive rubber 32; When the rubber 32 presses the switch node of the circuit membrane 2, the switch node is turned on. The circuit film 2, the conductive rubber 32, and the mechanism of action between them are conventional component structures, which are consistent with conventional keyboards.

[0019] The bottom of the four corners of the base shell 1 is respectively provided with an adjusting nut 4, the adjusting nut 4 can adjust the length of the screw hole 40 extending into the bottom of the base shell 1 by screwing, and the adjusting nut 4 The lower end of the nut 41 is supported on the desktop; an adjustment plate 5 is also provided below the base shell 1, and the adjustment plate 5 is sleeved on each of the adjustment nuts 4 through the through holes at its four corners, and It is placed horizontally on the upper end of the nut 41 of each adjustment nut 4; the adjustment plate 5 is provided with an adjustment plate magnet 51 which is opposite to the key magnet 31 in each key 3 at the position facing each of the keys 3; the natural state Next, the adjusting plate magnet 51 supports each key 3 at the upper limit position through the magnetic repulsion to the key magnet 31 .

[0020] For the adjustable keyboard in the first embodiment, by adjusting the supporting height of each adjusting nut 4, the distance between the adjusting plate 5 and the bottom of the base shell 1 can be adjusted, thereby adjusting each adjusting plate magnet 51 and each button magnet 31 The magnetic repulsion between them can adjust the softness and hardness of the button 3 when it is pressed down to meet different needs. as in figure 1 In the middle, the supporting height of the adjusting nut 4 is large, and the adjusting plate 5 is far from the base shell 1, the pressing resistance of the key 3 is small, and the key is soft; figure 2 In the middle, the support height of the adjusting nut 4 is small, and the adjusting plate 5 is closer to the base shell 1, so the pressing resistance of the key 3 is large, and the key is hard.

[0021] In addition, in the first embodiment, a plane coil 33 is also arranged horizontally in the button 3, and the plane coil 33 is output to the LED (not shown) disposed under the translucent characters on the surface of the button 3; In the process of pressing the key 3, due to the rapid change of the magnetic field in the key 3, the planar coil 33 generates an induced current, so that the LED flashes, that is, the key 3 that is struck flashes, so as to improve the fun of the keyboard.

[0022] Embodiment 2:

[0023] exist image 3 In the second embodiment shown, the adjustable keyboard includes a base shell 1, and a support plate 11 is formed at the lower part of the base shell 1; a key hole 10 is arranged above the support plate 11; each key hole 10 is provided with a key 3; The button 3 includes a section of button magnet 31 magnetized in the vertical direction; the button 3 is further sealed with an LC oscillating circuit 34, and the coil of the LC oscillating circuit 34 is wound on the button magnet 31; and The LC oscillation circuit 34 in each key 3 has different resonance frequencies; the adjustable keyboard also includes an FM receiving module (not shown), and the FM receiving module has the same number of keys as the adjustable keyboard. For example, suppose that the adjustable keyboard has N keys 3, the FM receiving module has N receiving channels, and each receiving channel is composed of a resonance module with an antenna. The resonance frequency of the resonance module corresponds to the resonance frequency of the LC oscillating circuit 34 in a button 3; the resonance modules of each receiving channel can share a receiving wire, and N different capacitors are tapped from the common receiving antenna, To form N resonant modules with different resonant frequencies.

[0024] As in the first embodiment, the bottom of the four corners of the base case 1 is respectively provided with an adjusting nut 4, and the adjusting nut 4 can be adjusted by screwing the screw holes 40 extending into the bottom of the base case 1. length, and the lower end of the nut 41 of the adjusting nut 4 is supported on the desktop; an adjusting plate 5 is also provided below the base shell 1, and the adjusting plate 5 is sleeved on each of the described The adjusting nut 4 is placed on the upper end of the nut 41 of each adjusting nut 4; Plate magnet 51 ; in a natural state, the adjustment plate magnet 51 supports each button 3 at the upper limit position through the magnetic repulsion to the button magnet 31 .

[0025] In the adjustable keyboard described in the second embodiment, the FM receiving module (not shown) is sealed in the plastic cavity in the base case 1; the inner surface of the base case 1 is provided with a metal layer (not shown in the figure). ), so that the LC oscillation circuit 34 and the FM receiving module in each of the buttons 3 are shielded in the metal layer; Internal repeated reflection) can only be transmitted to the FM receiving module and not dissipated externally; and external radio waves will not enter the metal layer and cause interference to the FM receiving module.

[0026]In the second embodiment, the upper surface of the support plate 11 is a metal plate, the LC oscillating circuit 34 in each of the buttons forms an open circuit on the lower surface of the button, and two open-circuit terminals 34a, 34b; when the button 3 is pressed down to contact with the support plate 11, the two open-circuit terminals 34a, 34b are conducted by the support plate 11; When 11 contacts, the LC oscillation circuit 34 inside will form a loop to generate an oscillating current, thereby sending an electromagnetic signal to the FM receiving module; thus avoiding the false touch signal generated by the button 3; that is, only the button 3 is pressed down When it reaches the bottom, it is recognized as a key operation. When the key 3 is slightly pressed due to the wrong touch of the hand, no key signal is generated.

[0027] For the second embodiment, it is also possible to adjust the hardness of the keys 3 when pressed down by adjusting the supporting heights of the adjusting nuts 4 to meet different needs; and compared with the first embodiment, the keys 3 in the second embodiment All have independent sealed circuit structures. When individual circuits fail, just replace individual keys 3 to eliminate the failure; and because there are no exposed electronic components, the waterproof performance of the keyboard is greatly improved, even if it is immersed in water, it will not be damaged. its circuit structure.