Magnetic shielding device suitable for magnetic axis keyboard

Abstract

The utility model relates to the technical field of mechanical keyboards, in particular to a magnetic shielding device suitable for a magnetic axis keyboard, which comprises a keyboard shell, the keyboard shell is assembled to form a keyboard main body structure, and the keyboard shell is sequentially provided with an upper shell, a middle plate, a keyboard circuit board, a shielding cover and a bottom shell from top to bottom. Side plates are arranged on the surfaces of the two sides of the upper shell, end plates are arranged on the surfaces of the two ends of the bottom shell, and interference of an external magnetic field on the Hall sensor can be effectively solved. The reliability of input equipment in a complex electromagnetic environment is enhanced, and the technical problem that uncontrolled signal output is caused due to the fact that sensing of a Hall sensor in a magnetic axis keyboard to magnetic flux is affected by existence of an interference source of the magnetic axis keyboard in the market is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical keyboards, in particular to a magnetic shielding device suitable for magnetic axis keyboards. Background Art

[0002] After searching the Chinese patent document with the existing announcement number CN213303965U, a Hall magnetic axis keyboard key structure is disclosed, including a lower cover, a PCB circuit board is arranged in the lower cover, a positioning groove is arranged on the upper surface of the PCB circuit board, a Hall magnetron is electrically connected to the lower surface of the PCB circuit board, and an LED lamp is electrically connected to the lower surface of the PCB circuit board on one side of the Hall magnetron, and an upper cover is arranged on the upper part of the PCB circuit board, and a key mounting hole is opened inside the upper cover. The device does not consume energy efficiency through the shaft of the permanent magnet in the magnetic shaft itself, and relies on the permanent magnet embedded in the shaft body to trigger the Hall magnetic induction device on the circuit board to turn on and off. The keyboard produced using the Hall magnetic axis not only reduces power consumption, but also has a longer service life than the optical axis keyboard. The production process and production capacity of the Hall magnetron are mature, which reduces the production cost of the keyboard to a certain extent. Compared with the optical axis keyboard, the attenuation is lower, the control is more precise, and the aging problem is solved.

[0003] There are currently no shielding devices on the market that can achieve or have similar application scenarios. The magnetic axis keyboards on the market do not take into account the interference of the external magnetic field on the Hall sensor in the keyboard PCB. In the keyboard usage scenarios, there are many magnetic field interference sources that use permanent magnets, such as laptop speakers, mobile phone speakers, mobile phones and vibration motors in handles. The presence of such interference sources will affect the Hall sensor's perception of magnetic flux in the magnetic axis keyboard, resulting in uncontrolled signal output. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a magnetic shielding device suitable for a magnetic axis keyboard, aiming to solve the technical problem that the existence of interference sources of magnetic axis keyboards on the market will affect the perception of magnetic flux by the Hall sensor in the magnetic axis keyboard, thereby causing uncontrolled signal output.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a magnetic shielding device suitable for a magnetic axis keyboard, comprising a keyboard shell, wherein the keyboard shell is assembled to form a keyboard main structure, wherein the keyboard shell is provided with an upper shell, a middle plate, a keyboard circuit board, a shielding cover and a bottom shell in sequence from top to bottom, side plates are provided on both side surfaces of the upper shell, and end plates are provided on both end surfaces of the bottom shell.

[0007] As a further description of the above technical solution:

[0008] The upper shell is made of aluminum alloy and is in the shape of a rectangular parallelepiped. The inner side of the top surface of the upper shell is provided with multiple rectangular grooves. The upper shell and the side panel are fixedly connected. The side panel has one short side and one long side. At the same time, corresponding threaded holes are provided at both ends of the surfaces of the two side panels.

[0009] As a further description of the above technical solution:

[0010] The middle plate is made of aluminum alloy and is in the shape of a cuboid. A plurality of rectangular grooves are arranged on the top surface. The middle plate is connected and fixed to the bottom shell by bolts, and the plate is connected and fixed to the keyboard circuit board by bolts.

[0011] As a further description of the above technical solution:

[0012] The keyboard circuit board is in the shape of a rectangular parallelepiped, and includes a circuit board and a Hall sensor. The shielding cover is in the shape of a rectangular parallelepiped galvanized plate, and the middle of the top surface of the shielding cover is in the shape of a rectangular parallelepiped groove.

[0013] As a further description of the above technical solution:

[0014] The bottom shell is a rectangular galvanized iron plate, and side plates and threaded holes corresponding to the upper shell are arranged on both sides of the bottom shell. The bottom shell and the end plates are fixedly connected, and the end plates are rectangular inclined plates. The upper shell and the bottom shell are fixed by bolt connection.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, the interference of the external magnetic field on the Hall sensor can be effectively solved, the reliability of the input device in a complex electromagnetic environment is enhanced, and the technical problem that the existence of interference sources of magnetic axis keyboards on the market will affect the perception of magnetic flux by the Hall sensor in the magnetic axis keyboard, thereby causing uncontrolled signal output, is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the upper shell split structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the bottom shell split structure of the utility model;

[0023] In the figure: 1. upper shell; 2. middle plate; 3. keyboard circuit board; 4. shielding cover; 5. bottom shell; 6. side plate; 7. end plate.

[0024] Its structure is formed by upper shell 1, middle plate 2, keyboard circuit board 3, shielding cover 4, bottom shell 5, side plate 6 and end plate 7. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] In the drawings, the same reference numerals all refer to the same components.

[0027] Example 1

[0028] Reference Figure 1-5 The utility model provides an embodiment: a magnetic shielding device suitable for a magnetic axis keyboard, including a keyboard shell, wherein the keyboard shell is assembled to form a keyboard main structure, and the keyboard shell is provided with an upper shell 1, a middle plate 2, a keyboard circuit board 3, a shielding cover 4 and a bottom shell 5 from top to bottom, and side plates 6 are provided on both side surfaces of the upper shell 1, and end plates 7 are provided on both end surfaces of the bottom shell 5.

[0029] The upper shell 1 is made of aluminum alloy and is in a rectangular shape. The inner side of the top surface of the upper shell 1 is provided with multiple rectangular grooves. The upper shell 1 and the side panel 6 are fixedly connected. The side panel 6 is provided with a short side on one side and a long side on the other side. At the same time, corresponding threaded holes are provided at both ends of the surfaces of the side panels 6 on both sides.

[0030] The middle plate 2 is made of aluminum alloy and is in the shape of a cuboid. A plurality of rectangular grooves are arranged on the top surface thereof. The middle plate 2 is connected and fixed to the bottom shell 5 by bolts, wherein the plate 2 is connected and fixed to the keyboard circuit board 3 by bolts.

[0031] The keyboard circuit board 3 is a rectangular parallelepiped, and includes a circuit board and a Hall sensor. The shielding cover 4 is a rectangular parallelepiped galvanized plate, and the middle of the top surface of the shielding cover 4 is a rectangular parallelepiped groove.

[0032] The bottom shell 5 is a rectangular galvanized iron plate, and side panels 6 and threaded holes corresponding to the upper shell 1 are arranged on both sides of the bottom shell 5. The bottom shell 5 and the end plate 7 are fixedly connected, and the end plate 7 is a rectangular inclined plate. The upper shell 1 and the bottom shell 5 are fixed by bolts.

[0033] Specifically, its structure is composed of an upper shell 1, a middle plate 2, a keyboard circuit board 3, a shielding cover 4, a bottom shell 5, a side plate 6 and an end plate 7 to form a magnetic shielding device suitable for a magnetic axis keyboard. The magnetic shielding device suitable for a magnetic axis keyboard is formed by splicing the upper shell 1, the middle plate 2, the keyboard circuit board 3, the shielding cover 4, the bottom shell 5, the side plate 6 and the end plate 7. The components are fixed by bolts. The upper shell 1 forms the appearance of the magnetic shielding device suitable for the magnetic axis keyboard. The middle plate 2 is used to fix the axis body. The keyboard circuit board 3 detects and sends key commands to the computer. The shielding cover 4 and the bottom shell 5 shield external magnetic field interference. The side plate 6 of the upper shell 1 and the end of the bottom shell 5 are closed after splicing, which effectively enhances the reliability of the magnetic shielding device input device suitable for the magnetic axis keyboard in a complex electromagnetic environment.

[0034] Working principle: The magnetic shielding device suitable for the magnetic axis keyboard is in the shape of a two-layer semi-enclosed ferrite metal box, which is completed by laser cutting the four sides of two ferrite material plates and then bending their frames upwards. The inner shielding cover 4 is fixed to the frame of the outer shielding cover of the bottom shell 5 by screws. The whole is a double-layer metal structure. Through the placement of the two materials and the different magnetic induction saturation intensities and magnetic permeabilities, the magnetic field of the external magnet preferentially passes through the ferrite material with higher magnetic permeability. After the outer ferrite material deflects most of the magnetic induction direction, a small amount of leakage magnetic flux will be absorbed by the inner ferrite material with higher nickel content and higher magnetic permeability and deflect its magnetic flux line direction, so that the magnetic axis keyboard interference source The perception of the Hall sensor in the magnetic axis keyboard to the magnetic flux is effectively reduced, and the overall use efficiency is effectively improved.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A magnetic shielding device suitable for a magnetic axis keyboard, comprising a keyboard housing, wherein the keyboard housing is assembled to form a keyboard main structure, characterized in that: The keyboard housing is provided with an upper shell (1), a middle plate (2), a keyboard circuit board (3), a shielding cover (4) and a bottom shell (5) in sequence from top to bottom; side plates (6) are provided on both side surfaces of the upper shell (1), and end plates (7) are provided on both end surfaces of the bottom shell (5).

2. A magnetic shielding device suitable for a magnetic axis keyboard according to claim 1, characterized in that: The upper shell (1) is made of aluminum alloy and is in the shape of a rectangular parallelepiped. The inner side of the top surface of the upper shell (1) is provided with a plurality of rectangular grooves. The upper shell (1) and the side plate (6) are fixedly connected. The side plate (6) is provided with a short side on one side and a long side on the other side. At the same time, corresponding threaded holes are provided at both ends of the surfaces of the side plates (6) on both sides.

3. A magnetic shielding device suitable for a magnetic axis keyboard according to claim 1, characterized in that: The middle plate (2) is made of aluminum alloy and is in the shape of a rectangular parallelepiped. A plurality of rectangular grooves are arranged on the top surface of the middle plate (2). The middle plate (2) is connected and fixed to the bottom shell (5) by bolts, wherein the plate (2) is connected and fixed to the keyboard circuit board (3) by bolts.

4. A magnetic shielding device suitable for a magnetic axis keyboard according to claim 1, characterized in that: The keyboard circuit board (3) is in the shape of a rectangular parallelepiped, and comprises a circuit board and a Hall sensor. The shielding cover (4) is in the shape of a rectangular parallelepiped galvanized plate, and the middle of the top surface of the shielding cover (4) is in the shape of a rectangular parallelepiped groove.

5. The magnetic shielding device suitable for a magnetic axis keyboard according to claim 1, characterized in that: The bottom shell (5) is a rectangular galvanized iron plate, and side plates (6) and threaded holes corresponding to the upper shell (1) are arranged on both sides of the bottom shell (5). The bottom shell (5) and the end plate (7) are fixedly connected, and the end plate (7) is a rectangular inclined plate. The upper shell (1) and the bottom shell (5) are fixedly connected by bolts.

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