Novel electromagnetic induction key switch

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, the circuit board is provided with an induction coil, and a guide post is provided with a metal block; and a closed bottom plate is arranged at the bottom of the guide groove. According to the novel electromagnetic induction key switch provided by the utility model, the bottom of the key adopts the structure of the closed bottom plate, so that the metal block cannot protrude out of the bottom of the key, the shaft core is prevented from being influenced by the external environment, the accurate positioning of the switch stroke is improved, and the service life of the switch stroke is prolonged; the non-contact interaction mode of the metal block and the induction coil ensures the hand feeling of the switch, reduces the manufacturing cost, and facilitates the popularization and application of the magnetic axis keyboard. And when the shaft core is pressed to the bottom, the metal block can collide with the closed bottom plate, so that clear 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 guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic induction switch technology, specifically to a novel electromagnetic induction push button switch. Background Technology

[0002] With the increasing prevalence of computers, peripheral input devices such as mice and keyboards have become familiar to everyone. Especially in recent years, the e-sports industry has experienced rapid growth, and mice and keyboards are no longer simply input devices. Consumers, especially gamers, have placed higher demands on durability, feel, and versatility. Therefore, a magnetic axis keyboard has emerged on the market. Its magnetic axis uses electromagnetic induction based on the Hall effect to switch signals on and off, solving the wear problem caused by physical contact in mechanical axes. Furthermore, these magnetic axis keys can accommodate different actuation points, allowing users to adjust the key's trigger height according to different scenarios, thus satisfying different usage habits and further enhancing the user experience.

[0003] However, existing magnetic axis key switches have some structural shortcomings. In practical applications, to achieve the aforementioned functions, a Hall sensor needs to be placed under each key, making it difficult to further reduce the cost of this type of keyboard and hindering the market expansion of magnetic axis keyboards. Therefore, a magnetic axis keyboard that replaces the Hall sensor with a coil has also been introduced to the market, thereby reducing the cost of magnetic axis keyboards through low-cost coils. Figure 1 As shown, this type of magnetic shaft button achieves inductive interaction with the coil 5 by relying on the protruding metal rod 10 installed at the bottom of the shaft core 3. Although this method can achieve inductive triggering, the structure of the protruding metal rod 10 affects the precise positioning of its switch travel, structural lifespan, and user experience. Therefore, this utility model proposes a novel electromagnetic induction button switch. Summary of the Invention

[0004] This invention provides a novel electromagnetic induction push button switch to solve the problems mentioned in the background art.

[0005] The objective of this utility model is achieved through the following means:

[0006] A novel electromagnetic induction push button switch includes a housing, a circuit board, and a shaft that is vertically and retractably disposed within the housing. A guide groove is provided within the housing. The lower end of the shaft slides into the guide groove via a guide post. A spring is provided on the outer side of the guide groove to support the shaft. An induction coil is disposed on the circuit board below the shaft. A metal block for interacting with the induction coil is fitted into the bottom of the guide post. A closed base plate is provided at the bottom of the guide groove. When the shaft is lowered to the bottom, the metal block contacts the closed base plate.

[0007] Furthermore, the upper end of the shaft is provided with a key that can pass through the housing.

[0008] Furthermore, the outer shell is composed of a top cover and a base, which are connected by snap-fit ​​fasteners.

[0009] Furthermore, the upper cover is provided with a positioning groove for accommodating the shaft core, and the inner wall of the positioning groove is evenly provided with a plurality of arc-shaped edges for abutting and engaging with the shaft core.

[0010] Furthermore, two tracks are symmetrically arranged inside the base, and the shaft core slides with the tracks through sliders on both sides.

[0011] Furthermore, a hollowed-out groove is provided between the track and the slider.

[0012] This utility model provides a novel electromagnetic induction key switch. By employing a closed base plate structure at the bottom of the key, the metal block cannot protrude beyond the bottom of the key, preventing the switch core from being affected by the external environment. This improves the accuracy of the switch travel and extends its service life. Simultaneously, the non-contact interaction between the metal block and the induction coil ensures a good tactile feel and reduces manufacturing costs, facilitating the widespread use of magnetic axis keyboards. Furthermore, when the switch core is pressed to the bottom, the metal block collides with the closed base plate, producing a crisp sound (Hi-Fi sound or mahjong sound), enhancing the key's tactile feel and ensuring a superior user experience. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an existing electromagnetic induction push-button switch in the background art;

[0014] Figure 2 This is a schematic diagram of the structure of a novel electromagnetic induction push button switch according to this utility model;

[0015] Figure 3 This is an exploded schematic diagram of a novel electromagnetic induction push button switch according to this utility model;

[0016] Figure 4 This is a cross-sectional view of a novel electromagnetic induction push button switch according to this utility model.

[0017] Figure 5 This is a top view of a novel electromagnetic induction push button switch according to this utility model;

[0018] Figure 6 This is a partial exploded view of a novel electromagnetic induction push button switch according to this utility model;

[0019] The reference numerals in the diagram are as follows: 1-outer shell, 1A-top cover, 11A-positioning groove, 12A-rounded edge, 1B-base, 11B-guide groove, 12B-track, 13B-closed base plate, 2-circuit board, 3-shaft core, 301-guide post, 302-key, 303-slider, 4-spring, 5-induction coil, 6-metal block, 7-hollowed-out groove, 10-metal rod. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In this embodiment, refer to Figure 2 - Figure 6 The present invention relates to a novel electromagnetic induction push button switch, comprising a housing 1, a circuit board 2, and a shaft 3 movably disposed within the housing 1. A guide groove 11B is provided within the housing 1. The lower end of the shaft 3 slides within the guide groove 11B via a guide post 301. A spring 4 is provided on the outer side of the guide groove 11B to support the shaft 3. An induction coil 5 is disposed on the circuit board 2 below the shaft 3. A metal block 6 for interacting with the induction coil 5 is fitted into the bottom of the guide post 301. A closed bottom plate 13B is provided at the bottom of the guide groove 11B. When the shaft 3 is lowered to the bottom, the metal block 6 contacts the closed bottom plate 13B.

[0022] Furthermore, the upper end of the shaft core 3 is provided with a key position 302 that can pass through the outer casing 1. The key position 302 is used to connect keycaps for displaying characters. The key position 302 is arranged in a cross shape, and one of them has an outwardly protruding edge, which serves as a foolproof design to prevent the keycaps from being installed in the wrong direction. In this embodiment, the circuit board 2 adopts a double-layer design, integrating signal processing and control circuits to ensure the stability and reliability of the electromagnetic induction key switch. The induction coil 5 is wound with high-quality copper wire, which has the characteristics of high sensitivity and fast response speed, and can accurately detect the up and down movement of the shaft core 3.

[0023] Furthermore, the outer casing 1 is composed of an upper cover 1A and a base 1B, which are connected by a snap fastener. The upper cover 1A is provided with a positioning groove 11A for accommodating the shaft core 3. The inner wall of the positioning groove 11A is evenly provided with a plurality of arc-shaped edges 12A for abutting against the shaft core 3. The plurality of arc-shaped edges 12A evenly provided on the inner wall of the positioning groove 11A not only limit the position of the shaft core 3, but also reduce the contact area with the shaft core 3. While ensuring the stable up and down movement of the shaft core 3, it can reduce the friction of the up and down movement of the shaft core 3, reduce the wear of the shaft core 3, and improve the smoothness of the button pressing.

[0024] Furthermore, two tracks 12B are symmetrically arranged inside the base 1B. The shaft core 3 slides with the tracks 12B through sliders 303 on both sides. A hollowed-out groove 7 is provided through the track 12B and the slider 303. The hollowed-out groove 7 is designed to reduce the friction between the track 12B and the slider 303, thereby improving the smoothness of the shaft core 3's up-and-down movement and reducing the wear of the shaft core 3.

[0025] This utility model provides a novel electromagnetic induction key switch. By employing a closed base plate 13B at the bottom of the key, the metal block 6 cannot protrude beyond the bottom of the key, preventing the switch core from being affected by the external environment. This improves the accuracy of the switch travel and extends its service life. Simultaneously, the non-contact interaction between the metal block 6 and the induction coil 5 ensures a good tactile feel and reduces manufacturing costs, facilitating the widespread use of magnetic axis keyboards. Furthermore, when the switch core 3 is pressed to the bottom, the metal block 6 collides with the closed base plate 13B, producing a crisp sound (Hi-fi sound or mahjong sound), enhancing the key's tactile feel and ensuring a superior user experience.

[0026] When the button is pressed, the bottom surface of the metal block 6 impacts the surface of the closed base plate 13B, producing a crisp sound (Hi-fi sound or mahjong sound). The metal block 6 is preferably made of iron, copper, or aluminum.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A novel electromagnetic induction push button switch, comprising a housing (1), a circuit board (2), and a shaft core (3) movably disposed within the housing (1), wherein a guide groove (11B) is provided within the housing (1), the lower end of the shaft core (3) is slidably engaged with the guide groove (11B) via a guide post (301), and a spring (4) for supporting the shaft core (3) is provided on the outer side of the guide groove (11B), characterized in that: The circuit board (2) is provided with an induction coil (5) below the shaft core (3), and a metal block (6) for interacting with the induction coil (5) is fitted into the bottom of the guide post (301). The bottom of the guide groove (11B) is provided with a closed bottom plate (13B). When the shaft core (3) is lowered to the bottom, the metal block (6) comes into contact with the closed bottom plate (13B).

2. The novel electromagnetic induction push-button switch according to claim 1, characterized in that: The upper end of the shaft core (3) is provided with a key (302) that can pass through the outer shell (1).

3. The novel electromagnetic induction push-button switch according to claim 1, characterized in that: The outer shell (1) is composed of a top cover (1A) and a base (1B), which are connected by a snap fastener.

4. The novel electromagnetic induction push-button switch according to claim 3, characterized in that: The upper cover (1A) is provided with a positioning groove (11A) for accommodating the shaft core (3), and a plurality of arc-shaped edges (12A) for abutting and engaging with the shaft core (3) are evenly provided on the inner wall of the positioning groove (11A).

5. A novel electromagnetic induction push-button switch according to claim 3 or 4, characterized in that: The base (1B) has two symmetrically arranged tracks (12B), and the shaft (3) slides with the tracks (12B) through the sliders (303) on both sides.

6. The novel electromagnetic induction push-button switch according to claim 5, characterized in that: A hollowed-out groove (7) is provided between the track (12B) and the slider (303).

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