Magnetic axis key

Abstract

The utility model discloses a magnetic axis key, and relates to the field of input equipment, the magnetic axis key comprises a base body, a key body, a magnetic block and a Hall sensor, the base body, the key body, the magnetic block and the Hall sensor are hollow to form a mounting position, and the key body is mounted in the mounting position; the magnetic block and the Hall sensor are oppositely arranged in the mounting position; the magnetic poles of the magnetic blocks are arranged in the vertical direction to form magnetic field distribution in the vertical direction; the magnetic block and the key body synchronously move in the vertical direction; when the magnetic block is at the initial position, the lower magnetic pole is horizontally and relatively matched with the Hall sensor, and when the magnetic block moves to the lower stroke stop point, the upper magnetic pole is horizontally and relatively matched with the Hall sensor. The key triggers the Hall sensor through the change of the magnetic pole, so that the change of a magnetic field can be more accurately controlled, the accuracy and the anti-interference performance of a trigger signal are ensured, and the possibility of false triggering and missing triggering is reduced.

Description

Technical Field

[0001] The present application relates to the field of input devices, and in particular to a magnetic axis key. Background Art

[0002] Hall sensors are widely used in various electronic devices and mechanical devices to detect changes in magnetic fields and convert them into electrical signals, thereby realizing functions such as switching, positioning, and speed detection. In keyboard design, magnetic axis keys are a typical application. Traditional magnetic axis keys mainly rely on changes in the magnetic field strength of a single magnetic pole to achieve triggering. This design usually installs a magnetic block on the key, and the magnetic block moves by pressing the key, thereby changing the magnetic field strength detected by the Hall sensor to trigger the signal.

[0003] Although traditional magnetic axis buttons meet the triggering requirements to a certain extent, there are still some shortcomings in practical applications. First, the triggering stability is poor. The traditional design relies on the change of magnetic field strength of a single magnetic pole, which is easily disturbed by the external environmental magnetic field, resulting in unstable triggering. This instability may cause false triggering or missed triggering in electronic equipment, affecting the normal use of the equipment. Secondly, the triggering reliability is low. In the long-term use of the magnetic axis buttons with a single magnetic pole design, the relative position between the magnetic block and the Hall sensor may shift, resulting in inaccurate trigger signals. In this case, frequent calibration and maintenance are required, which increases the cost of use and the difficulty of maintenance.

[0004] Especially in multi-key keyboards, the existing structure is also susceptible to interference from the magnetic field of adjacent keys. This interference may cause the trigger signals of each key to affect each other, further reducing the overall performance of the keyboard and user experience.

[0005] In summary, traditional magnetic axis buttons have deficiencies in trigger stability, reliability and anti-interference ability, and need further improvement to enhance their performance in practical applications. Utility Model Content

[0006] The purpose of this application is to overcome at least one of the shortcomings of the prior art and to provide a magnetic axis button that triggers the Hall sensor through changes in the magnetic poles, which can more accurately control the changes in the magnetic field, ensure the accuracy and anti-interference of the trigger signal, and reduce the possibility of false triggering and missed triggering.

[0007] To achieve the above purpose, the present application discloses a magnetic axis key, including a base, a key body, a magnetic block, and a Hall sensor, wherein the base is hollow to form a mounting position, the key body is mounted in the mounting position, and cooperates with the base through an elastic reset element and a guide structure to achieve resettable linear motion of the key body relative to the base; the magnetic block is arranged in the mounting position relative to the Hall sensor; the magnetic poles of the magnetic block are arranged in the vertical direction to form a vertical magnetic field distribution; the magnetic block and the key body move synchronously in the vertical direction; when the magnetic block is in the initial position, the lower magnetic pole cooperates with the Hall sensor horizontally, and when the magnetic block moves to the lower stroke stop point, its upper magnetic pole cooperates with the Hall sensor horizontally. .

[0008] In some embodiments, the Hall sensor has pins extending out of the substrate.

[0009] In some embodiments, the base is made of non-magnetic material and includes a base and a cover.

[0010] In some embodiments, the button body is made of non-magnetic material, including a handle located at the bottom, a guide column extending downward from the handle, and a mounting block extending from the handle, the mounting block is used to install the magnetic block, and a guide groove cooperating with the guide column is provided on the corresponding base, and the guide column and the guide groove cooperate to achieve axial guiding and limiting of the button body.

[0011] Furthermore, the button body also includes a square guide block, and the base body is provided with a square guide groove matching with the guide block, and the square guide groove cooperates with the square guide block to realize axial guiding and radial limiting of the button body.

[0012] In some embodiments, the elastic return element is a spring.

[0013] In some embodiments, the magnetic block is a regular rectangle, and the magnetic poles of the magnetic block are arranged in an up-and-down direction, with the top end being the north pole and the bottom end being the south pole.

[0014] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0015] 1. Improve the accuracy of the trigger signal: By triggering the Hall sensor through the change of magnetic poles, the magnetic axis button can more accurately control the change of the magnetic field to ensure the accuracy of the trigger signal.

[0016] 2. Enhanced anti-interference: The design of the magnetic axis button reduces the interference of the external magnetic field on the Hall sensor and improves the anti-interference ability of the button. It is especially suitable for multi-button keyboards to reduce the interference of the magnetic field of adjacent keys.

[0017] 3. Reduce false triggering and missed triggering: Due to the upper and lower magnetic poles arrangement, the button has different magnetic poles facing the Hall sensor at the initial position and the lower stroke stop point, which significantly reduces the possibility of false triggering and missed triggering and improves the reliability of the button.

[0018] The above-listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description parts of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment disclosed in this application.

[0021] Figure 2 It is a schematic diagram of the structure after the substrate is removed in an embodiment disclosed in the present application.

[0022] Figure 3 It is a schematic diagram of the structure at another viewing angle after the substrate is removed in an embodiment disclosed in the present application.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of an embodiment disclosed in the present application, in which the key is in the initial position.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of an embodiment disclosed in the present application, in which the key body is at the lower dead point of the travel. DETAILED DESCRIPTION

[0025] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0026] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0027] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification.

[0028] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. Example

[0029] like Figures 1 to 5 As shown, this embodiment discloses a magnetic axis key, including a base 1, a key body 2, a magnetic block 3 and a Hall sensor 4.

[0030] The base 1 is hollow to form a mounting position 101 , and the button body 2 is mounted in the mounting position 101 and cooperates with the base through an elastic reset element 102 and a guide structure to achieve resettable linear motion of the button body 2 relative to the base 1 .

[0031] It should be noted that the base 1 is made of non-magnetic material, such as ABS plastic or polyamide (nylon), which has good mechanical strength and durability. The base 1 includes a seat 103 and a cover 104. The hollow design of the base 1 forms a mounting position 101, so that the key body 2 can move freely therein without being disturbed by the outside.

[0032] The seat 103 of the base 1 is a hollow rectangular frame with a guide groove inside, which cooperates with the guide column 201 at the lower end of the key body 2. The cover 104 is in the shape of a treasure cover, installed above the seat 103, and fixed by buckles or screws.

[0033] A spring installation position is provided at the bottom of the base 1 for installing an elastic reset element 102 . Generally, the elastic reset element 102 uses a reset spring with a spiral structure to ensure that the button body 2 can be quickly reset after being released.

[0034] More specifically, the return spring is usually made of stainless steel or other highly elastic metal materials. The selection of the spring needs to take into account its elastic coefficient and fatigue life to ensure that the key can still maintain good return performance during long-term use. The spring is installed between the lower end of the guide post of the key body 2 and the spring installation position at the bottom of the base.

[0035] During implementation, when the key body 2 is pressed, the spring is compressed and stores energy; when the key body 2 is released, the spring returns to its original shape and pushes the key body 2 back to the initial position, thereby achieving rapid reset.

[0036] In this embodiment, the key body 2 is made of non-magnetic material, such as commonly used materials such as ABS plastic or polycarbonate (PC), which have good mechanical strength and durability.

[0037] The key body 2 includes a handle 202, a guide column 201 extending downward from the handle 202, and a mounting block 203 extending from the handle 202. The handle 202 is not the part pressed by the user, and is usually matched with an external key cap (not shown in the figure). The key cap is usually designed in an ergonomic shape to provide a comfortable operating experience.

[0038] In terms of specific structure, the guide post 201 is located below the handle 202 and extends vertically downward from the center of the handle 202. The lower end of the handle 202 is connected to the mounting block 203, and the mounting block 203 is used to fix the magnetic block 3.

[0039] When working, the key body 2 cooperates with the guide groove in the base 1 through the guide column 201. The guide groove is arranged along the axial direction of the base 1 to ensure that the key body 2 moves smoothly in the vertical direction without deviation, thereby ensuring the accuracy and stability of the trigger.

[0040] To further improve the movement stability, the key body 2 also includes a square guide block 204. Matchingly, a square guide groove cooperating with the guide block 204 is provided on the base 1. This design further enhances the stability of the key body and prevents shaking or jamming during use.

[0041] As a further description of this embodiment, the magnetic block 3 is fixed on the mounting block 203 of the button body 2, and is in a regular rectangular shape, with its magnetic poles arranged in an up-down direction, with the top end being the north pole and the bottom end being the south pole. The magnetic block 3 is usually made of neodymium iron boron (NdFeB) material, which has strong magnetism and stable magnetic field characteristics.

[0042] To install the magnetic block 3, the bottom of the mounting block 203 is recessed upward to form a slot, in which the magnetic block 3 is fixed, ensuring that the magnetic block 3 moves synchronously with the movement of the button body 2. Through the arrangement of the upper and lower magnetic poles, the magnetic block 3 forms a uniform magnetic field distribution in the vertical direction during the linear travel of the button body 2, ensuring that the Hall sensor 4 can accurately detect the change in the magnetic field.

[0043] In this embodiment, the Hall sensor 4 is also installed in the installation position 101 of the base 1 and is arranged opposite to the magnetic block 3 .

[0044] The Hall sensor 4 is connected to the external PCB circuit board 5 through its pins, so that the detected magnetic field change signal can be transmitted to the control circuit to achieve the trigger output of the key signal.

[0045] It should be noted that the PCB circuit board 5 is provided with an avoidance position for avoiding the button body 2 and the magnetic block 3 .

[0046] In this embodiment, the detection surface of the Hall sensor 3 is perpendicular to the movement direction of the magnetic block 3, ensuring that the change of the magnetic field during the up and down movement of the magnetic block 3 can be accurately captured. The position of the Hall sensor 4 is fixed at a specific position in the base 1, and is fixed by a bracket or a fixing groove to ensure that the position will not be offset during long-term use.

[0047] In the specific implementation process, when the button body 2 is pressed, the magnet 3 moves downward with the button body 2, and the upper magnetic pole of the magnet 3 gradually approaches the Hall sensor 4, and finally is aligned with the Hall sensor 4 in the horizontal direction at the bottom of the stroke. At this time, the Hall sensor 4 detects the change of the magnetic field from one pole to the other and generates a signal. After the button is released, the reset spring resets the button body 2, and the magnet 3 rises and returns to the initial position. At this time, the lower magnetic pole is aligned with the Hall sensor 4, and the Hall sensor 4 re-detects the initial magnetic field state. Through the changes in the upper and lower magnetic poles, the Hall sensor 4 can accurately detect each pressing action of the button to ensure the accuracy and stability of the signal.

[0048] Compared with the traditional magnetic axis button, the magnetic axis button of this embodiment shows significant technical advantages in many aspects. The traditional magnetic axis button mainly relies on the change of magnetic field strength of a single magnetic pole to achieve triggering. This design is easily interfered by external magnetic fields. For example, external electromagnetic equipment or changes in the surrounding magnetic field can affect the detection of the Hall sensor, resulting in unstable triggering and false triggering. This interference may come from adjacent buttons, nearby electronic devices or other magnetic objects, causing the Hall sensor to be unable to accurately determine the button status.

[0049] In this embodiment, the Hall sensor 4 is triggered by the change of the magnetic pole. This method can more accurately control the change of the magnetic field, ensuring that the Hall sensor 4 is not affected by the change of the external magnetic field strength when detecting the magnetic pole position, thereby improving the accuracy and stability of the trigger signal. At the same time, this design significantly enhances the anti-interference ability and reduces the possibility of false triggering and missed triggering.

[0050] Although the exemplary embodiments of the present disclosure have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A magnetic axis button, characterized in that: include: A substrate, a button body, a magnetic block, and a Hall sensor, wherein the substrate is hollow to form a mounting position, and the button body is mounted in the mounting position; the magnetic block and the Hall sensor are arranged in the mounting position opposite to each other; the magnetic poles of the magnetic block are arranged in the vertical direction to form a vertical magnetic field distribution; the magnetic block and the button body move synchronously in the vertical direction; when the magnetic block is in the initial position, the lower magnetic pole cooperates horizontally with the Hall sensor, and when the magnetic block moves to the lower stroke stop point, its upper magnetic pole cooperates horizontally with the Hall sensor.

2. A magnetic axis key as claimed in claim 1, characterized in that: The key body cooperates with the base through an elastic reset element and a guide structure to achieve resettable linear motion of the key body relative to the base.

3. A magnetic axis key as claimed in claim 1, characterized in that: The Hall sensor has pins extending out of the base.

4. A magnetic axis key as claimed in claim 1, characterized in that: The base is made of non-magnetic material and includes a seat and a cover.

5. A magnetic axis key as claimed in claim 1, characterized in that: The key body is made of non-magnetic material, including a handle located at the bottom, a guide column extending downward from the handle, and a mounting block extending from the handle. The mounting block is used to install the magnetic block. A guide groove cooperating with the guide column is provided on the corresponding base. The guide column and the guide groove cooperate to achieve axial guiding and limiting of the key body.

6. A magnetic axis key as claimed in claim 1, characterized in that: The key body also includes a square guide block. Correspondingly, a square guide groove matching the guide block is provided on the base body. The square guide groove and the square guide block cooperate to realize axial guiding and radial limiting of the key body.

7. A magnetic axis key as claimed in claim 1, characterized in that: The elastic restoring element is a spring.

8. A magnetic axis key as claimed in claim 1, characterized in that: The magnetic block is a regular rectangle, and the magnetic poles of the magnetic block are arranged in the up and down direction, with the top end being the north pole and the bottom end being the south pole.

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