Magnetic shaft key

Abstract

The utility model provides a kind of magnetic shaft button, including key shaft, metal magnetic conducting sheet, button shell and two axial magnetization identical magnets.The metal magnetic conducting sheet is fixedly arranged in the upper end of button shell, and the middle hole is opened in it.The one end of the key shaft is set in button shell through the middle hole of the metal magnetic conducting sheet, and the two magnets are symmetrically installed on the pair of outer side surfaces of the shaft body of the key shaft below the metal magnetic conducting sheet.The magnetic shaft button is recovered to the state before being pressed when it is not pressed, by the magnetic force action between the metal magnetic conducting sheet and the two magnets.The magnetic shaft button provided by the utility model realizes reverse linear feedback pressing feeling and pressing recovery mechanism based on the magnetic force action between the metal magnetic conducting sheet and moving magnet, and provides a kind of "from heavy to light, down-dive" light unique feeling with simple structure.

Description

Technical Field

[0001] The technical solution provided by this utility model belongs to the field of human-computer interaction input and output devices, specifically relating to a physical button with a unique light pressing feel. Background Technology

[0002] Physical buttons are a crucial type of input device, widely used in mobile phones, computers, and other electronic devices and still in use today. A key reason for their continued presence in modern electronic devices is their ability to provide diverse and tactile feedback, catering to individual user needs. For instance, gamers prefer physical buttons because pressing them offers different mechanical and audible feedback, enhancing their sensory experience.

[0003] In physical buttons, magnetic axis buttons are those that output a pressing signal by sensing the movement of a magnetic axis using a magnetic sensor. Thanks to the short travel length of the button itself and the low latency response of the magnetic field sensor, magnetic axis buttons offer advantages such as rapid triggering, no mechanical fatigue or physical wear, and high durability. For example, a typical mechanical key requires a travel of over 10mm to complete two triggers, while a magnetic axis button only requires a travel of a few millimeters and has a response latency of only 1ms. Given the limitations of magnetic field distribution, designing a simple magnetic axis button structure to achieve different tactile feedback and meet users' personalized needs is a major optimization direction for magnetic axis buttons. Utility Model Content

[0004] In response to gamers' demands for physical buttons to provide a light and quick tactile feedback, this invention provides a magnetic axis button with a simple structure, balanced pressure, anti-linear pressing feel, and automatic return capability.

[0005] The magnetic shaft button provided by this utility model includes a key shaft, a metal magnetic conductive sheet, a button housing, and two identical magnets axially magnetized. The metal magnetic conductive sheet is fixedly disposed at the upper end of the button housing, with a central opening. One end of the key shaft passes through the central opening of the metal magnetic conductive sheet and is fitted into the button housing. The two identical magnets are symmetrically mounted on one outer side of the key shaft located below the metal magnetic conductive sheet, and the magnetization direction, shape, and size of the two magnets are identical. When the magnetic shaft button is pressed and released, it returns to its unpressed state due to the magnetic force between the metal magnetic conductive sheet and the two magnets.

[0006] Based on the relationship between the strength of the magnetic field generated by the magnet and the distance between them, it can be seen that as the magnetic axis button is pressed, the distance between the metal magnetic plate and the two magnets gradually increases. At this time, the magnetic force between them decreases in an antilinear manner (specifically, in a quadratic relationship). Therefore, the magnetic axis button provided by this utility model can provide a light and responsive feel that is "heavy at first and then light later" and "unstoppable" after pressing.

[0007] Furthermore, the key shaft is a cylindrical, strip-shaped, or square shaft, and the central opening of the metal magnetic sheet is square. In some embodiments, the key housing includes a key cover and a key base, and the metal magnetic sheet is fixedly mounted on the mounting position of the key cover.

[0008] Furthermore, the magnetic axis button also includes a magnetic induction unit, which is disposed within the button housing and located below the key axis. The magnetic induction unit is a magnetic field sensor based on Hall effect or XMR magnetoresistive sensing, wherein XMR includes GMR, TMR, and AMR.

[0009] Furthermore, the two magnets are square or bar magnets. Correspondingly, a mounting frame for mounting the two magnets is provided on a pair of outer surfaces of the key shaft. The lower end of the mounting frame is lower than the lower end of the key shaft and cooperates with the key base to limit the pressing stroke of the magnetic shaft key.

[0010] The magnetic axis button provided by this utility model achieves button press rebound and personalized tactile feedback solely based on the spatial positioning between the moving magnet and the metal magnetic sheet and the magnetic force between them. With its simple structure, this magnetic axis button achieves a light and responsive feel with a "heavy at the beginning and light at the end, rapid descent" when pressed, which can well meet the personalized tactile feedback needs of some gamers who prefer physical buttons. Attached Figure Description

[0011] Figure 1 The schematic diagram of the magnetic shaft button provided by this utility model.

[0012] Figure 2 The graph shows the trend of the pressing feedback force of the magnetic shaft button provided by this utility model as the pressing stroke increases.

[0013] Figure 3 This is an overall schematic diagram of the magnetic shaft button provided by this utility model in one embodiment.

[0014] Figure 4 for Figure 3 An exploded view of the magnetic axis buttons in the image.

[0015] Figure 5 An exploded view of another embodiment of the magnetic shaft button provided by this utility model. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] like Figure 1 The schematic diagram shown illustrates that the magnetic shaft button provided by this invention includes...

[0019] The device includes a key shaft 1, a metal magnetic sheet 2, at least two axially magnetized movable magnets 31 and 32 of identical shape and size, and a key housing 4. The metal magnetic sheet 2 is fixedly mounted on the upper end of the key housing 4, with a central opening. One end of the key shaft 1 passes through the central opening of the metal magnetic sheet 2 and is fitted into the key housing 4. The movable magnets 31 and 32 are symmetrically fixedly embedded on one outer side of the shaft of the key shaft 1 located below the metal magnetic sheet 2. When the magnetic shaft key is not pressed and released, it returns to its unpressed state due to the magnetic force between the metal magnetic sheet 2 and the movable magnets 31 and 32.

[0020] The moving magnets 31 and 32 have the same magnetic pole polarity near the metal magnetic sheet 2 (both can be N or S poles). Correspondingly, the magnetic sensing unit for sensing the pressed state of the magnetic shaft button can be disposed in the button housing 4 below the key shaft 1. The magnetic sensing unit is a magnetic field sensor based on Hall effect or XMR magnetoresistive sensing, where XMR includes GMR, TMR, and AMR.

[0021] Figure 2 This is a graph showing the changing trend of the pressing feedback force corresponding to the magnetic shaft button provided in this utility model. Figure 2 It can be seen that the pressing feedback force decreases in an antilinear manner (because the magnetic field generated by the moving magnet decreases quadratically with distance). Therefore, when the magnetic axis button is pressed, it provides the user with a light and swift tactile feedback that is "heavy at the beginning and light at the end, with a rapid downward movement," which can well meet the pressing feel requirements of game users for physical buttons.

[0022] like Figure 3 , Figure 4As shown, in one embodiment, the key housing 4 of the magnetic shaft key provided by this utility model includes a key cover 41 and a key base 42. The key shaft 1 is a strip-shaped or square shaft (in other embodiments, it can also be a cylindrical shaft). The metal magnetic conductive sheet 2 is a square metal sheet with a square or rectangular hole in the middle. One end of the key shaft 1 passes through the metal magnetic conductive sheet 2 and is sleeved in the key housing 4. Moving magnets 31 and 32 are symmetrically embedded on one outer side of the shaft of the key shaft 1 located below the metal magnetic conductive sheet 2. The moving magnets 31 and 32 have the same shape and size, and the same magnetization direction, both being axially magnetized. The magnetic induction unit can be disposed within or outside the accommodating space of the key base 42 located below the key shaft 1.

[0023] Figure 4 for Figure 3 An exploded view of a magnetic shaft button. (See attached image.) Figure 4 As shown, the two movable magnets 31 and 32 are square or bar magnets. Mounting positions for the movable magnets 31 and 32 are correspondingly provided on a pair of outer surfaces of the shaft body located below the metal magnetic sheet 2 of the key shaft 1. The mounting positions are formed by mounting frames 11 and 12 (square or rectangular), the lower ends of which are lower than the lower end of the key shaft, and cooperate with the key seat 42 to limit the pressing stroke of the magnetic shaft key. The lower end of the key seat 42 has several downwardly protruding mounting posts 5, and the key cover 41 and the key seat 42 are assembled by snap-fit.

[0024] Figure 5 An exploded view of another embodiment of the magnetic shaft button provided in this application. Figure 5 As shown, the two movable magnets 31 and 32 are square or bar magnets. Mounting positions for the movable magnets 31 and 32 are correspondingly provided on a pair of outer surfaces of the shaft body located below the metal magnetic sheet 2 of the key shaft 1. The signal pins 72 of the board 7, on which the magnetic induction unit 71 is mounted, pass through the key base 42 and, together with the mounting posts 5 with several downward protrusions at the lower end of the key base 42, are used to fix the key base 42. The key cover 41 and the key base 42 are assembled by a snap-fit ​​mechanism.

[0025] for Figure 5 In the illustrated embodiment, because the magnetic induction unit 71 is integrated into the key shaft, there is less interference between the magnets of adjacent keys, and the output signal is more stable. The magnetic shaft key has greater versatility and can be used for flexible keyboard structure design. In addition, since the magnetic induction unit 71 is integrated into the key shaft and closer to the magnet, the linearity of the magnetic field change curve is higher, and the linearity of the pressure change is better.

[0026] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A magnetic shaft button, characterized in that, The magnetic shaft button includes a key shaft, a metal magnetic sheet, a key housing, and two identical magnets that are axially magnetized. The metal magnetic sheet is fixedly disposed at the upper end of the key housing, with a central opening. One end of the key shaft passes through the central opening of the metal magnetic sheet and is fitted into the key housing. The two identical magnets are symmetrically mounted on one outer side of the key shaft located below the metal magnetic sheet. The two magnets have the same magnetization direction, shape, and size.

2. The magnetic shaft button as described in claim 1, characterized in that, The key shaft is a cylindrical shaft, a strip shaft, or a square shaft.

3. The magnetic shaft button as described in claim 1 or 2, characterized in that, The magnetic axis button also includes a magnetic induction unit, which is disposed inside or outside the button housing and located below the key axis.

4. The magnetic shaft button as described in claim 3, characterized in that, The button housing includes a button cover and a button base, and the metal magnetic sheet is fixedly mounted on the mounting position of the button cover.

5. The magnetic shaft button as described in claim 4, characterized in that, The magnetic induction unit is mounted on a board, which is located inside the button housing. It receives or outputs electrical signals through pins passing through the button socket.

6. The magnetic shaft button as described in claim 1, characterized in that, The two magnets are square or bar magnets.

7. The magnetic shaft button as described in claim 4, characterized in that, A mounting frame for mounting the two magnets is provided on a pair of outer surfaces of the key shaft. The lower end of the mounting frame is lower than the lower end of the key shaft and cooperates with the key base to limit the pressing stroke of the magnetic shaft key.

8. The magnetic shaft button as described in claim 4, characterized in that, When the magnetic axis button is not pressed and released, it returns to its original state before being pressed due to the magnetic force between the metal magnetic sheet and the two magnets.

9. The magnetic shaft button as described in claim 3, characterized in that, The magnetic induction unit is a magnetic field sensor based on Hall effect or XMR magnetoresistive sensing, where XMR includes GMR, TMR, and AMR.

Images