CN220913627U

CN220913627U - Key switch and keyboard

Info

Publication number: CN220913627U
Application number: CN202322646384.1U
Authority: CN
Inventors: 陶崇阳; 臧琛
Original assignee: Dongguan Hejin Electronic Technology Co ltd
Current assignee: Dongguan Hejin Electronic Technology Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-05-07
Anticipated expiration: 2033-09-27

Abstract

The utility model relates to a key switch and a keyboard in the technical field of keys, which comprises a base, a pressing key and a cover body, wherein an elastic reset piece is arranged on the base, a permanent magnet is arranged on the pressing key, an electromagnetic coil is arranged below the permanent magnet, the keyboard comprises a shell, a circuit board and the key switches, the circuit board is arranged in the shell, the key switches are arranged on the circuit board, a Hall IC (integrated circuit) for being electrically connected with the key switches is arranged on the circuit board, when the keyboard is used, the permanent magnet moves up and down along with the pressing key, the magnetic flux of the electromagnetic coil becomes smaller along with the distance of the permanent magnet and becomes larger along with the approach of the permanent magnet in the process of changing the upper and lower positions of the permanent magnet, and a plurality of electromagnetic coils on the keyboard only conduct data processing through one Hall IC, so that the quantity of the Hall ICs is greatly reduced, and the preparation cost of the keyboard is effectively reduced in a mode of replacing the Hall sensor by the electromagnetic coil.

Description

Key switch and keyboard

Technical Field

The utility model relates to the technical field of keys, in particular to a key switch and a keyboard.

Background

With the increasing popularity of computers, peripheral input devices such as mice and keyboards have long been known. In particular, in recent years, the electronic competition industry has developed rapidly, and the mouse and the keyboard are not input devices in a simple sense any more, so that consumers, especially game players, have higher requirements on the aspects of durability, handfeel and diversity.

The mechanical keyboard is generated under the environment, has good hand feeling and greatly improves the durability, but the used mechanical shaft still depends on the contact of the positive and negative pole shrapnel to realize the on-off of the circuit, and the service life is still limited. In the market, a magnetic axis keyboard has appeared, and the magnetic axis that it used is based on the electromagnetic induction that hall effect produced and realizes the break-make of signal, has solved the wearing and tearing problem that mechanical axis produced through physical contact. However, the keyboard still has fixed trigger points, so that the requirements of different users on different pressing strokes are difficult to meet, or the requirements of the same user on different pressing strokes are met when the same user uses the keyboard for office work, for example, the pressing strokes are expected to be shorter, so that the input is more convenient; but when they use a keyboard to play a electronic competition game, it may be desirable to have a longer pressing stroke to meet the specific needs in the game.

Therefore, a key switch capable of sensing the stroke height of the shaft core in real time is proposed in the market, and particularly a keyboard capable of setting functions can be checked in Chinese patent publication No. CN215069754U, and the position height of the shaft core with the magnet is sensed in real time through a Hall sensor below each key, so that the trigger height of the key can be adjusted at will through software. The problem of adjustment of stroke height has indeed been solved to this mode, but all needs to arrange the setting of a hall sensor below every button, leads to the unable further reduction of selling price of this type of keyboard, is unfavorable for this type of keyboard to lay in a large number in the market.

Disclosure of utility model

The utility model provides a key switch and a keyboard, which are used for solving the cost problem of the keyboard.

The object of the utility model is achieved by:

A key switch comprises a base, a pressing key which is arranged on the base and can move up and down, and a cover body which is arranged on the base and is in limit fit with the pressing key, wherein an elastic reset piece which is used for being matched with the pressing key is arranged on the base; the pressing key is provided with permanent magnets, and electromagnetic coils are arranged below the permanent magnets at intervals.

In the above description, the permanent magnet is provided on one side of the push button and moves up and down with the push button.

In the above description, the permanent magnet is disposed at a lower end of the pressing key and moves up and down with the pressing key.

The keyboard comprises a shell and a circuit board arranged in the shell, wherein a plurality of key switches are arranged on the circuit board, and a Hall IC (integrated circuit) used for being electrically connected with the key switches is arranged on the circuit board.

In the above description, the electromagnetic coil is electrically connected to the hall IC through the circuit board.

The utility model has the beneficial effects that: when the keyboard is used, the permanent magnet block can move up and down along with the key pressing, the magnetic flux of the electromagnetic coil can be reduced along with the distance of the permanent magnet block and is increased along with the approach of the permanent magnet block in the process of changing the upper position and the lower position of the permanent magnet block, and the plurality of electromagnetic coils on the keyboard only conduct data processing through one Hall IC, so that the number of the Hall ICs is greatly reduced, and the preparation cost of the keyboard is effectively reduced through the mode of replacing the Hall sensors by the electromagnetic coils.

Drawings

FIG. 1 is a cross-sectional view of a key switch in a first embodiment;

FIG. 2 is a first schematic diagram of a keyboard according to the first embodiment;

FIG. 3 is a schematic diagram of a second structure of the keyboard according to the first embodiment;

FIG. 4 is a cross-sectional view of a key switch in the second embodiment;

FIG. 5 is a schematic diagram of a first structure of a keyboard according to the second embodiment;

The reference numerals in the drawings are respectively: the device comprises a 1-key switch, a 101-base, a 102-pressing key, a 103-cover body, a 104-elastic reset piece, 105-permanent magnet blocks, 106-electromagnetic coils, a 2-circuit board and a 3-Hall IC.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

Embodiment one:

referring to fig. 1, a key switch 1 in the embodiment includes a base 101, a pressing key 102 disposed on the base 101 and capable of moving up and down, and a cover 103 disposed on the base 101 and in limit fit with the pressing key 102, wherein an elastic reset member 104 for matching with the pressing key 102 is disposed on the base 101; the pressing key 102 is provided with permanent magnets 105, and electromagnetic coils 106 are arranged below the permanent magnets 105 at intervals.

The permanent magnet 105 is disposed on one side of the push button 102 in this embodiment, and moves up and down with the push button 102.

The elastic restoring member 104 and the springs commonly used in the art in this embodiment may be replaced by torsion springs commonly used in the market to adapt to a portion of the thin film keyboard.

The keyboard as shown in fig. 2-3 comprises a housing (not shown), a circuit board 2 disposed in the housing, and the key switches 1, wherein a plurality of the key switches 1 are disposed on the circuit board 2, and a hall IC3 electrically connected with the key switches 1 is disposed on the circuit board 2.

Further, the plurality of electromagnetic coils 106 are electrically connected to the hall IC3 through the circuit of the circuit board 2.

When the keyboard is used, the permanent magnet blocks 105 can move up and down along with the pressing of the key 102, the magnetic flux of the electromagnetic coils 106 can be reduced along with the distance of the permanent magnet blocks 105 and is increased along with the approach of the permanent magnet blocks 105 in the process of changing the up and down positions of the permanent magnet blocks 105, and the plurality of electromagnetic coils 106 on the keyboard only conduct data processing through one Hall IC3, so that the number of the Hall ICs 3 is greatly reduced, and the preparation cost of the keyboard is effectively reduced in a mode of replacing the Hall sensors through the electromagnetic coils 106.

Embodiment two:

As shown in fig. 4 to 5, the present embodiment is different from the first embodiment in that the permanent magnet block 105 is disposed at the lower end of the pressing key 102, and the pressing key 102 is cylindrically disposed.

The present utility model is not limited to the preferred embodiments, but is intended to be limited to the following description, and any modifications, equivalent changes and variations in light of the above-described embodiments will be apparent to those skilled in the art without departing from the scope of the present utility model.

Claims

1. The key switch comprises a base (101), a pressing key (102) which is arranged on the base (101) and can move up and down, and a cover body (103) which is arranged on the base (101) and is in limit fit with the pressing key (102), wherein an elastic reset piece (104) which is used for being matched with the pressing key (102) is arranged on the base (101);

The method is characterized in that: the pressing key (102) is provided with permanent magnets (105), and electromagnetic coils (106) are arranged below the permanent magnets (105) at intervals.

2. A key switch according to claim 1, wherein: the permanent magnet block (105) is arranged on one side of the pressing key (102) and moves up and down along with the pressing key (102).

3. A key switch according to claim 1, wherein: the permanent magnet block (105) is arranged at the lower end of the pressing key (102) and moves up and down along with the pressing key (102).

4. Keyboard, its characterized in that: the electric power switch comprises a shell, a circuit board (2) and the key switches (1) according to any one of claims 1-3, wherein the circuit board (2) is arranged in the shell, the key switches (1) are arranged in a plurality, the key switches (1) are arranged on the circuit board (2), and a Hall IC (3) used for being electrically connected with the key switches (1) is arranged on the circuit board (2).

5. The keyboard as claimed in claim 4, wherein: the electromagnetic coil (106) is electrically connected with the Hall IC (3) through the circuit board (2).