Laptop keyboard based on Hall effect

Abstract

The utility model discloses a notebook computer keyboard based on Hall effect, which relates to the technical field of keyboards, and comprises a magnetic axis key module, an isolation seat and a circuit board which are arranged in a notebook computer keyboard area, the magnetic axis key module is composed of a key frame and a key array fixed on the key frame, the magnetic axis key module is detachably installed above the isolation seat, the circuit board is arranged below the isolation seat, the circuit board is provided with a Hall sensor array, the positions of Hall sensors are in one-to-one correspondence with keys of the key array, and the isolation seat is made of a material which allows a magnetic field to penetrate through. The non-contact characteristic of the Hall sensor is utilized, the magnetic axis key module and the circuit board are completely separated through the isolation base, the problem of pore seepage of a traditional keyboard is thoroughly solved, the detachable magnetic axis key module is used, and the problem that an existing notebook computer keyboard is not easy to replace after being damaged is solved. And a user can conveniently replace more personalized keyboard keys.

Description

TECHNICAL FIELD

[0001] The utility model application relates to the technical field of keyboard, specifically is a notebook computer keyboard based on hall effect. BACKGROUND

[0002] Keyboard is one of the basic input devices of notebook computer, and English letters, Chinese characters, numbers, punctuation marks and the like can be input into the computer through the keyboard, so that commands and data can be input to the computer, common notebook computers have a large keyboard area, and many keys are installed on the keyboard area, the keys are fixed on the circuit board below and are connected to the computer mainboard through a cable. Because the keys and the circuit board cannot be isolated, there are many pores, and it is difficult to achieve waterproof performance. The current waterproof technology for the keyboard generally takes waterproof measures for each key separately, such as sealing the keys below the keyboard by using silicone rubber or separating the independent keys by using hard plastic. The silicone rubber sealing method generally uses thick silicone rubber, which is not suitable for notebook computers with high thickness requirements. The hard plastic separation solves the waterproof problem to some extent, but the manufacturing process and maintenance are very complex, and it is not suitable for use in ultra-thin electronic products with high thickness requirements.

[0003] Chinese utility model patent publication No. CN102543542A also discloses a waterproof keyboard, which sets a film between the bottom plate and the key cover. The film covers the bottom plate, which integrally isolates the keys and the keyboard circuit board, and can play a role in waterproofing and dustproofing. However, due to the extension characteristics of the film and the fact that the thickness of the film is generally less than 0.2mm, the film cannot rebound after being repeatedly pressed by the keys, and will be damaged until it loses the waterproof function. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems existing in the current notebook computer keyboard, the utility model provides a notebook computer keyboard based on hall effect, specifically:

[0005] A notebook computer keyboard based on Hall effect, comprising a magnetic shaft key module arranged in the notebook computer keyboard area, an isolation seat and a circuit board, the magnetic shaft key module is composed of a key frame and a key array fixed on the key frame, each key bottom of the key array is provided with a permanent magnet, the magnetic shaft key module is detachably mounted above the isolation seat, the circuit board is arranged below the isolation seat and connected with the notebook computer mainboard, the isolation seat completely isolates the magnetic shaft key module and the circuit board, so that water vapor invasion is prevented, the circuit board is provided with a Hall sensor array, the Hall sensor position corresponds to the keys of the key array one by one, the isolation seat is made of a material allowing magnetic field penetration, the Hall sensor continuously detects the change of the magnetic field, when the key is pressed to cause the magnetic flux of the Hall sensor position to exceed the set threshold, the Hall sensor informs the master control chip that the key is pressed, and the master control chip can scan the entire key array through the control circuit, so that the key position can be accurately positioned and converted into a key signal and output to the computer.

[0006] Preferably, the isolation seat is an integral structure made of one of engineering plastics, aluminum magnesium alloy and carbon fiber, and is fixed between the notebook computer shell through bolts, so that the integrated sealing mode completely prevents water vapor from invading the position of the magnetic shaft key module.

[0007] Preferably, the isolation seat is provided with a groove corresponding to the magnetic shaft key module, and the magnetic shaft key module is connected with the isolation seat through a modular buckle structure, the buckle structure comprises dovetail grooves arranged at the edges of the groove of the isolation seat and elastic clamping jaws arranged at the bottom of the magnetic shaft key module correspondingly, so that the magnetic shaft key module can be taken down as a whole, and even if water is accidentally poured on the keyboard, it can be easily cleaned.

[0008] Preferably, the permanent magnet is a magnetized small iron sheet, and the size thereof is matched with the sensing area of the Hall sensor.

[0009] Preferably, the keys of the key array and the isolation seat maintain a spacing of 0.5mm-3mm in the vertical direction.

[0010] Compared with the prior art, the notebook computer keyboard based on Hall effect has the following beneficial effects:

[0011] 1. The utility model discloses a non-contact characteristic of hall sensor is utilized, is combined through engineering plastics isolating seat and ultrasonic welding sealing structure, and the magnetic shaft button module and circuit board are completely separated, and the traditional keyboard pore liquid permeation problem is solved completely, simultaneously, because magnetic shaft button module does not have any circuit device, the utility model discloses still can normal use under the humid environment (that is, magnetic shaft button module dips water), and the utility model discloses the button trigger only relies on the distance of permanent magnet and hall sensor to reach threshold value, can reduce the noise when using the keyboard, realizes the noiseless office.

[0012] 2. The utility model discloses a detachable magnetic shaft button module, solve the problem that the existing notebook computer keyboard is not easy to replace after being damaged, facilitate user to replace more personalized keyboard button. DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor under the premise of these drawings.

[0014] Figure 1 It is the explosion view of notebook computer assembly structure in the utility model;

[0015] Figure 2 It is the notebook computer assembly completion structure schematic view in the utility model;

[0016] Figure 3 It is the structure schematic view of magnetic shaft button module of the utility model;

[0017] Figure 4 It is the structure schematic view of isolating seat and keyboard shell of the utility model;

[0018] Figure 5 It is the structure schematic view of circuit board hall sensor array of the utility model;

[0019] Figure 6 It is the hall sensor array circuit principle diagram in the utility model.

[0020] Wherein: 1, magnetic shaft button module;11, elastic jaw;12, permanent magnet;2, isolating seat;21, dovetail groove;3, circuit board;4, hall sensor. DETAILED DESCRIPTION

[0021] In order to make the application purposes, features, advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] Referring to Figures 1 to 6 A notebook computer keyboard based on Hall effect comprises a magnetic shaft key module 1 arranged in the notebook computer keyboard area, an isolation seat 2 and a circuit board 3, the magnetic shaft key module 1 is composed of a key frame and a key array fixed on the key frame, each key of the key array is provided with a permanent magnet 12 at the bottom, the magnetic shaft key module 1 is detachably mounted above the isolation seat 2, the circuit board 3 is arranged below the isolation seat 2 and connected with the notebook computer mainboard, the circuit board 3 is provided with an array of Hall sensors 4, the positions of the Hall sensors 4 correspond to the keys on the key array one by one, and the isolation seat 2 is made of a material allowing the magnetic field to penetrate.

[0023] Specifically, the isolation seat 2 is an integrally formed engineering plastic component, and the isolation seat 2 is bolted between the notebook computer shell, specifically, the isolation seat 2 forms a complete surface in the notebook keyboard area, and is bolted to the four corners of the notebook computer shell, and the middle groove is used to place the magnetic shaft key module 1.

[0024] Specifically, the isolation seat 2 is provided with a groove corresponding to the magnetic shaft key module 1, and the magnetic shaft key module 1 is connected with the isolation seat 2 through a modular buckle structure, and the buckle structure comprises a dovetail groove 21 arranged at the edge of the groove of the isolation seat 2 and an elastic clamping jaw 11 arranged at the bottom of the magnetic shaft key module correspondingly.

[0025] Specifically, the permanent magnet 12 arranged below the key is a magnetized small iron sheet, and since the spacing between the keys is small, the permanent magnet 12 does not need to have a large magnetic force, and a too large magnetic force will interfere with the accurate reading of the key, and the size of the permanent magnet 12 is matched with the sensing area of the Hall sensor 4.

[0026] Specifically, the keys of the key array and the isolation seat 2 maintain a spacing of 0.5mm in the vertical direction, and a key stroke is reserved so that the key can be pressed down.

[0027] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A notebook computer keyboard based on Hall effect, comprising a magnetic axis key module arranged in the area of the notebook computer keyboard, an isolation seat and a circuit board, characterized in that: The magnetic shaft key module is composed of a key frame and a key array fixed on the key frame, each key bottom of the key array is provided with a permanent magnet, the magnetic shaft key module is detachably installed above the isolation seat, the circuit board is arranged below the isolation seat and connected with the notebook computer mainboard, the circuit board is provided with a Hall sensor array, the Hall sensor position corresponds to the key of the key array one by one, and the isolation seat is made of a material allowing magnetic field to penetrate.

2. A notebook computer keyboard based on Hall effect as claimed in claim 1, wherein: The isolation seat is an integrated structure, is made of one of engineering plastics, aluminum-magnesium alloy and carbon fiber, and is fixed between the notebook computer shell through bolts.

3. The Hall-effect based notebook computer keyboard of claim 1, wherein: The isolation seat is provided with a groove corresponding to the magnetic shaft key module, the magnetic shaft key module is connected with the isolation seat through a modular buckle structure, and the buckle structure comprises dovetail grooves arranged at the edges of the groove of the isolation seat and elastic clamping jaws correspondingly arranged at the bottoms of the magnetic shaft key module.

4. The Hall-effect based notebook computer keyboard of claim 1, wherein: The permanent magnet is a magnetized small iron sheet, and the size thereof is matched with the induction area of the Hall sensor.

5. The Hall-effect based notebook computer keyboard of claim 1, wherein: The keys of the key array and the isolation seat keep a spacing of 0.5mm-3mm in the vertical direction.

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