A stable magnetic axis button

Abstract

The utility model discloses a stable magnetic axis button, including the button handle that can be in the base up and down activity, reset elastic part is arranged between button handle with base, button handle bottom extends and has the button axis, the button axis is cavity structure, and is equipped with the axle core in button axis, the magnetic axis button still includes one magnet, and this magnet is installed in the cavity of button axis and is set up in the outside of axle core, the axle core part stretches out the bottom end of button axis and magnet, when button axis is pressed to bottom, axle core with base abuts. Through setting axle core and make the magnet surround its setting, realized the structure that axle core is prior to magnet to contact base when touching the bottom. This design will touch the bottom action concentrate in the point contact of axle core center, solved the problem that traditional button axis touches the bottom and is easy to shake, and the pressing hand feeling is stable, improved the reliability, optimized the user experience.

Description

Technical Field

[0001] This utility model relates to the field of electronic device input devices, specifically to a stable magnetic axis button. Background Technology

[0002] A magnetic axis button is a switching device that uses magnetic induction principles (such as the Hall effect) to detect the button travel. Traditional magnetic axis buttons typically have a magnet (such as a magnetic post) directly fixed to the bottom or inside of the button's shaft. When the button is pressed, the magnet moves with the shaft, changing its relative position or magnetic field strength with the Hall element on the PCB board below the base, thereby generating a trigger signal.

[0003] However, this traditional structure has the following drawbacks: First, to ensure magnetic flux, the magnet needs to have a certain volume, resulting in a wider bottom of the button. This disperses the force distribution at the moment of bottoming out, making it prone to wobbling or tilting, leading to an unstable feel. Second, during assembly, the magnet may protrude slightly from the bottom of the button, or it may loosen due to adhesive failure after prolonged use. This causes the magnet to directly impact the hard surface of the base upon bottoming out, producing not only abnormal noise but also potentially causing the magnet itself to break or be damaged, affecting its lifespan and reliability. Furthermore, the direct impact sound of the magnet against the hard base is generally undesirable to users.

[0004] Therefore, an improved magnetic axis button structure is needed to solve the problems of poor pressing stability, easy damage to the magnet, and poor bottoming-out feel and sound. Utility Model Content

[0005] To address the aforementioned problems, this utility model aims to provide a magnetic shaft button with a stable structure that can effectively protect the magnet.

[0006] To achieve this technical objective, the present invention provides a stable magnetic shaft button, comprising a handle that can move up and down within a base, a reset elastic element being provided between the handle and the base; a shaft extending from the bottom of the handle, the shaft having a hollow structure and a core being provided inside the shaft; the magnetic shaft button further comprising a magnet, which is installed within the cavity of the shaft and sleeved outside the core; the core extends out from the bottom ends of the shaft and the magnet, and when the shaft is pressed to the bottom, the core abuts against the base.

[0007] Preferably, the base has a guide cavity that slides with the pivot, and the bottom of the guide cavity has a boss corresponding to the position of the pivot.

[0008] Preferably, the magnet is a ring-shaped magnetic column.

[0009] Preferably, the bottom of the shaft core has an arc-shaped structure.

[0010] Preferably, a PCB board is provided below the base, and a magnetic induction element corresponding to the position of the magnet is provided on the PCB board.

[0011] Preferably, the device also includes a key cover, and the key handle and the key cover have matching guide structures inside.

[0012] The beneficial effects of this invention are as follows: By setting a shaft core and surrounding it with magnets, a structure is achieved where the shaft core contacts the base before the magnets when the bottom is touched. This design concentrates the bottom-touching action at a point contact in the center of the shaft core, solving the problem of easy shaking when the traditional shaft is pressed to the bottom. This results in a stable pressing feel, improved reliability, and an optimized user experience. Attached Figure Description

[0013] Figure 1 This is an exploded view of the present invention;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the handle in this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the pivot and the magnet in this utility model;

[0017] Figure 5 This is a schematic diagram of the key cover in this utility model;

[0018] Figure 6 This is a schematic diagram of the base in this utility model.

[0019] In the diagram: 1-Button; 11-T-shaped guide rail; 2-Button shaft; 3-Shaft core; 31-Arched bottom; 4-Magnet; 5-Base; 51-Guide cavity; 52-Boss; 6-Reset elastic element; 7-PCB board; 71-Magnetic induction element; 8-Key cover; 81-Guide groove. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; these embodiments are only some embodiments of the present invention; other embodiments obtained based on this application without creative effort are all within the scope of protection of the present invention.

[0021] In the following embodiments, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top / bottom," etc., are all based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of clearly describing this embodiment. They do not indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application. At the same time, the terms "first" and "second" in the embodiments are only used for descriptive purposes and do not represent an indication or implication of relative importance.

[0022] like Figure 1-6 As shown, the specific embodiment of this utility model is a stable magnetic shaft button, including a handle 1, a key cover 8, a base 5, and a PCB board 7.

[0023] The key cover 8 is fixed above the base 5, and has a through hole in its center. The key handle 1 extends out of the through hole of the key cover 8 for the user to press. The key handle 1 and the key cover 8 have matching guide structures (such as T-shaped guide rail 11 and guide groove 81) to ensure that the key handle 1 can only move up and down in the vertical direction, and will not rotate or wobble.

[0024] The bottom of the handle 1 extends downward to form a cylindrical push rod 2. The push rod 2 has a hollow internal structure. A core 3 is disposed within this cavity. The core 3 is preferably made of plastic. The top end of the core 3 can be fixed to the top of the push rod 2, and the bottom end of the core 3 extends beyond the bottom end face of the push rod 2. In this embodiment, the bottom 31 of the core 3 is machined into a smooth arc shape to form point contact.

[0025] The magnetic shaft button also includes a ring-shaped magnet 4, specifically a ring-shaped magnetic post, which is sleeved on the outside of the shaft core 3 and fixedly installed inside the cavity of the button shaft 2. The fixing method can be an interference fit or adhesive bonding between the magnet 4 and the inner wall of the button shaft 2, or an interference fit between the magnet 4 and the shaft core 3 followed by a complete installation into the button shaft 2. After installation, the bottom end of the magnet 4 should be axially higher than the arc-shaped bottom 31 of the shaft core 3, ensuring that, regardless of the orientation, the bottom 31 of the shaft core 3 is the first part to contact when bottoming out.

[0026] The base 5 has an upward-opening guide cavity 51 at its center. The shape of the guide cavity 51 matches that of the push rod 2, and it is used to guide the precise vertical movement of the push rod 2. A boss 52 is formed by an upward protrusion at the bottom center of the guide cavity 51. The position of the boss 52 corresponds vertically to the arc-shaped bottom 31 of the shaft core 3. The boss 52 is preferably also made of plastic.

[0027] A reset elastic element 6 is provided between the handle 1 or the shaft 2 and the base 5. In this embodiment, the reset elastic element 6 is a reset spring. The reset elastic element 6 is sleeved on the outside of the guide cavity 51, with its upper end abutting against the lower part of the handle 1 and its lower end abutting against the base 5.

[0028] The PCB board 7 is located below the base 5, and a magnetic sensing element 71, such as a Hall sensor, is mounted on its upper surface. The magnetic sensing element 71 is positioned opposite the annular magnetic post 4 and is used to detect the change in magnetic field generated by the magnet 4 when it moves vertically, thereby accurately measuring the travel of the button or determining the trigger state.

[0029] The working principle of this application is as follows:

[0030] When the user presses down the handle 1, the shaft 2 slides down along the guide cavity 51, and the magnet 4 moves down synchronously. Its magnetic field changes relative to the Hall element 71 on the PCB board 7, and outputs a corresponding electrical signal.

[0031] When pressed to the end of its stroke, the plastic arc-shaped bottom 31 of the shaft core 3 first contacts the plastic boss 52 at the bottom of the guide cavity 51. Because the shaft core 3 is located at the center of the entire push-button and the contact point is concentrated, the bottoming action is more stable and wobble-free. At the same time, a gap is maintained between the bottom end of the magnet 4 and the top surface of the boss 52 / base 5, avoiding direct impact, protecting the magnet 4, and extending its service life.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A stable magnetic shaft button, comprising a handle movable up and down within a base, wherein a reset elastic element is disposed between the handle and the base; characterized in that, The bottom of the handle extends into a push shaft, which has a hollow structure and contains a core. The magnetic push shaft also includes a magnet, which is installed inside the cavity of the push shaft and sleeved on the outside of the core. The core extends out of the bottom of the push shaft and the magnet. When the push shaft is pressed to the bottom, the core abuts against the base.

2. The stable magnetic shaft button according to claim 1, characterized in that, The base has a guide cavity that slides with the shaft, and the bottom of the guide cavity has a boss corresponding to the position of the shaft core.

3. The stable magnetic shaft button according to claim 1 or 2, characterized in that, The magnet is a ring-shaped magnetic column.

4. The stable magnetic shaft button according to claim 1 or 2, characterized in that, The bottom of the shaft core has an arc-shaped structure.

5. The stable magnetic shaft button according to claim 1 or 2, characterized in that, A PCB board is provided below the base, and a magnetic induction element corresponding to the position of the magnet is provided on the PCB board.

6. The stable magnetic shaft button according to claim 1 or 2, characterized in that, It also includes a key cover, and the key handle and the key cover have matching guide structures inside.

Images