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CN-224217433-U - Novel electromagnetic induction key switch

CN224217433UCN 224217433 UCN224217433 UCN 224217433UCN-224217433-U

Abstract

The utility model relates to a novel electromagnetic induction key switch in the technical field of electromagnetic induction switches, which comprises a shell, a circuit board and a shaft core, wherein the circuit board is provided with an induction coil, a guide post is provided with a metal block, and the bottom of the guide slot is provided with a closed bottom plate. According to the novel electromagnetic induction key switch provided by the utility model, the structure of the closed bottom plate is adopted at the bottom of the key, so that the metal block cannot protrude outwards from the bottom of the key, the shaft core is prevented from being influenced by external environment, the accurate positioning of the switch stroke and the service life are improved, meanwhile, the non-contact interaction mode of the metal block and the induction coil ensures the hand feeling of the switch, the manufacturing cost is reduced, and the popularization and the use of the magnetic shaft keyboard are facilitated. And when the shaft core is pressed to the bottom, the metal block can collide with the closed bottom plate, so that crisp sound (Hifi sound or mahjong sound) is generated, the pressing hand feeling of the key is improved, and the use experience of a user is ensured.

Inventors

  • WU GANG

Assignees

  • 东莞市巨臣电子科技有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (6)

  1. 1. The novel electromagnetic induction key switch comprises a shell (1), a circuit board (2) and a shaft core (3) which is arranged in the shell (1) in a lifting manner, wherein a guide groove (11B) is formed in the shell (1), the lower end of the shaft core (3) is in sliding fit with the guide groove (11B) through a guide post (301), and a spring (4) for supporting the shaft core (3) is arranged outside the guide groove (11B), and the novel electromagnetic induction key switch is characterized in that an induction coil (5) is arranged below the circuit board (2) corresponding to the shaft core (3), and a metal block (6) for interacting with the induction coil (5) is embedded at the bottom of the guide post (301); The bottom of the guide groove (11B) is provided with a closed bottom plate (13B), and when the shaft core (3) descends to the bottom, the metal block (6) is contacted with the closed bottom plate (13B).
  2. 2. The novel electromagnetic induction key switch of claim 1, wherein the upper end of the shaft core (3) is provided with a key position (302) which can pass through the shell (1).
  3. 3. The novel electromagnetic induction key switch of claim 1, wherein the shell (1) is formed by combining an upper cover (1A) and a base (1B), and the upper cover (1A) and the base (1B) are connected through a buckle.
  4. 4. The novel electromagnetic induction key switch of claim 3 is characterized in that a positioning groove (11A) for accommodating the shaft core (3) is formed in the upper cover (1A), and a plurality of arc edges (12A) for being in butt fit with the shaft core (3) are uniformly formed in the inner wall of the positioning groove (11A).
  5. 5. The novel electromagnetic induction key switch of claim 3 or 4 is characterized in that two tracks (12B) are symmetrically arranged in the base (1B), and the shaft core (3) is in sliding fit with the tracks (12B) through sliding blocks (303) on two sides.
  6. 6. The novel electromagnetic induction key switch of claim 5, wherein a hollow groove (7) is arranged between the track (12B) and the sliding block (303) in a penetrating way.

Description

Novel electromagnetic induction key switch Technical Field The utility model relates to the technical field of electromagnetic induction switches, in particular to a novel electromagnetic induction key switch. 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. Therefore, a magnetic axis keyboard has appeared on the market, and the magnetic axis that its used is the electromagnetic induction that produces based on hall effect and realizes the break-make of signal, has solved the wearing and tearing problem that mechanical axis produced through physical contact. In addition, the magnetic axis keys can also realize the requirements of different pressing strokes, and a user can adjust the trigger height of the keys according to different scenes, so that different use habits are met, and the use experience of the user is further improved. However, the existing magnetic axis key switch has some defects in structure, and in practical application, in order to realize the functions, a hall sensor needs to be arranged below each key, so that the cost of the keyboard is difficult to further compress, and the magnetic axis keyboard is not beneficial to expanding and popularizing in the market. Therefore, a magnetic axis keypad that relies on a coil to replace the hall sensor is also proposed in the market, thereby reducing the cost of the magnetic axis keypad by a low cost coil. As shown in fig. 1, the magnetic axis key realizes induction interaction with the coil 5 by means of the convex metal rod 10 installed at the bottom of the axis core 3, and the mode can realize induction triggering, but the accurate positioning of the switch stroke, the service life of the structure and the use hand feel are affected due to the convex metal rod 10 structure. Therefore, the utility model provides a novel electromagnetic induction key switch. Disclosure of Invention The present utility model provides a novel electromagnetic induction key switch to solve the above-mentioned problems in the background art. The object of the utility model is achieved by: The novel electromagnetic induction key switch comprises a shell, a circuit board and a shaft core which is arranged in the shell in a lifting manner, wherein a guide groove is formed in the shell, the lower end of the shaft core is in sliding fit with the guide groove through a guide post, a spring used for supporting the shaft core is arranged outside the guide groove, an induction coil is arranged below the shaft core corresponding to the circuit board, a metal block used for interacting with the induction coil is arranged at the bottom of the guide post in a jogged manner, a sealing bottom plate is arranged at the bottom of the guide groove, and when the shaft core is lowered to the bottom, the metal block is in contact with the sealing bottom plate. Further, the upper end of the shaft core is provided with a key position which can pass through the shell. Further, the shell is formed by combining an upper cover and a base, and the upper cover and the base are connected through a buckle. Further, a positioning groove for accommodating the shaft core is formed in the upper cover, and a plurality of arc edges for being in butt fit with the shaft core are uniformly formed in the inner wall of the positioning groove. Further, two rails are symmetrically arranged in the base, and the shaft core is in sliding fit with the rails through sliding blocks at two sides. Further, a hollow groove is arranged between the track and the sliding block in a penetrating mode. According to the novel electromagnetic induction key switch provided by the utility model, the structure of the closed bottom plate is adopted at the bottom of the key, so that the metal block cannot protrude outwards from the bottom of the key, the shaft core is prevented from being influenced by external environment, the accurate positioning of the switch stroke and the service life are improved, meanwhile, the non-contact interaction mode of the metal block and the induction coil ensures the hand feeling of the switch, the manufacturing cost is reduced, and the popularization and the use of the magnetic shaft keyboard are facilitated. And when the shaft core is pressed to the bottom, the metal block can collide with the closed bottom plate, so that crisp sound (Hifi sound or mahjong sound) is generated, the pressing hand feeling of the key is improved, and the use experience of a user is ensured. Drawings FIG. 1 is a schematic diagram of a conventional electromagnetic induction key switch in the prior art; FIG. 2 is a schematic structural diagram of a novel