Ultrathin magnetic induction keyboard switch
By introducing a magnetic design into the keyboard switch, and using Hall elements to sense the movement of the magnet to achieve signal transmission, the problem of inaccurate conduction caused by wear of the moving and stationary contacts is solved, extending the service life and improving production efficiency and thinness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CITY KAIHUA ELECTRONICS
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-15
AI Technical Summary
The moving and stationary contacts of existing ultra-thin keyboards are prone to wear after prolonged use, leading to inaccurate conduction and affecting the lifespan of the keyboard switches.
The design employs a magnetic keypad switch. By placing a magnet on the balance frame, the movement of the magnet is sensed by Hall elements on the circuit board to achieve signal transmission, avoiding wear between the moving and stationary parts. Furthermore, the Hall elements are pre-installed on the circuit board, simplifying the production and assembly process.
It achieves precise signal transmission, extends the lifespan of the keyboard switches, improves production and assembly speed, and makes the overall keyboard switches thinner and lighter, meeting the needs of different users.
Smart Images
Figure CN224249687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of key switch technology, and in particular to an ultra-thin magnetic keyboard switch. Background Technology
[0002] A keyboard is a device used to input instructions and data to operate equipment. It also refers to a set of function keys arranged by a system to operate a machine or device. The keyboard is the most commonly used and primary input device, allowing users to input English letters, numbers, punctuation marks, etc., into a computer, thereby issuing commands and inputting data.
[0003] With the continuous advancement of technology, existing laptops are becoming increasingly thinner and lighter, and their keyboards are also becoming thinner and lighter. However, most ultra-thin keyboards on the market currently use a mechanical conduction mechanism. When pressed, the moving and stationary contacts make contact to achieve conduction. After prolonged use, this conduction method results in high wear on the moving and stationary contacts, which can easily lead to inaccurate conduction and cause the keyboard switches to malfunction. Utility Model Content
[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide an ultra-thin magnetic keyboard switch. This switch utilizes a magnet mounted on a balance frame. Hall effect sensors on the circuit board detect the movement of the magnet, enabling precise signal transmission and avoiding wear between the moving and stationary contacts. This ensures the lifespan of the keyboard switch. Furthermore, the magnet is placed within the balance frame, and Hall effect sensors can be pre-installed on the circuit board, effectively improving production and assembly speed. The balance frame structure further contributes to the overall thinness and lightness of the keyboard switch, meeting the needs of different users.
[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:
[0006] An ultra-thin magnetic keyboard switch includes a circuit board, a Hall element disposed on the circuit board, a balance frame assembly disposed on the circuit board, a magnetic mounting portion formed on the balance frame assembly, and a magnet inserted into the magnetic mounting portion and matching the Hall element. The balance frame assembly includes a first balance frame rotatably disposed on the circuit board, a second balance frame rotatably disposed on the first balance frame, and a top cover disposed on the first balance frame and the second balance frame. The magnetic mounting portion is disposed on any one of the first balance frame, the second balance frame, and the top cover.
[0007] As a further improvement of this utility model, the magnetic mounting part includes a connecting limiting plate extending downward from the side of the self-balancing frame assembly, a base plate vertically disposed at the lower end of the connecting limiting plate, an outer limiting plate formed on the side of the base plate extending upward and symmetrical to the connecting limiting plate, and a side limiting plate symmetrically formed on the side of the base plate extending upward and located between the outer limiting plate and the connecting limiting plate.
[0008] As a further improvement of this utility model, the side limiting plate is in the shape of a "「".
[0009] As a further improvement of this utility model, the Hall element is disposed on the lower end surface of the circuit board and its position matches that of the magnet.
[0010] As a further improvement of this utility model, the magnetic mounting part is disposed on the upper cover, and a hollow relief groove is formed in the middle of the upper cover, and the magnetic mounting part is disposed on the inner side wall of the relief groove.
[0011] As a further improvement of this utility model, the magnetic mounting part is disposed on the inner side wall of the first balance frame and is parallel to the Hall element.
[0012] As a further improvement of this utility model, the magnetic mounting part is disposed on the inner side wall of the second balance frame and is parallel to the Hall element.
[0013] As a further improvement of this utility model, it also includes a keycap disposed on the upper cover and a base for fixing the first balance frame and the second balance frame.
[0014] The beneficial effects of this utility model are as follows:
[0015] By configuring this keyboard switch to include a circuit board, a Hall element disposed on the circuit board, a balance frame assembly disposed on the circuit board, a magnetic mounting portion formed on the balance frame assembly, and a magnet placed in the magnetic mounting portion and matching the Hall element, the balance frame assembly includes a first balance frame rotatably disposed on the circuit board, a second balance frame rotatably disposed on the first balance frame, and a top cover disposed on the first balance frame and the second balance frame, and the magnetic mounting portion is disposed on any one of the first balance frame, the second balance frame, and the top cover.
[0016] By incorporating magnets on the balance frame assembly, Hall effect sensors on the circuit board detect the movement of these magnets, achieving precise signal transmission and avoiding wear between the moving and stationary components, thus ensuring the lifespan of the keyboard switch. The Hall effect sensors can be pre-installed on the circuit board, with the magnets correspondingly placed within the magnetic mounting section. During final assembly, simply snap the balance frame assembly onto the circuit board to complete the process, effectively increasing production speed and efficiency. By placing the magnetic mounting section on any one of the first, second, or top-cover components of the balance frame, its position can be adjusted according to the internal structure of the keyboard switch, further saving space. The position of the Hall effect sensors on the circuit board can be adjusted accordingly, and the combined structure of the balance frame assembly results in a thinner and lighter keyboard switch, meeting the needs of different users.
[0017] The above is an overview of the utility model's technical solution. The following description, in conjunction with the accompanying drawings and specific embodiments, will further illustrate the utility model. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0019] Figure 2 This is another overall schematic diagram of the present invention;
[0020] Figure 3 This is a schematic diagram of the magnetic mounting section after the keycaps are removed during the top cover installation.
[0021] Figure 4 This is a schematic diagram of the magnetic mounting part when it is on the top cover;
[0022] In the diagram: 1. Circuit board; 2. Hall element; 3. Balance frame assembly; 31. First balance frame; 32. Second balance frame; 33. Top cover; 331. Leaving groove; 4. Magnetic mounting part; 41. Connecting limiting plate; 42. Base plate; 43. Outer limiting plate; 44. Side limiting plate; 5. Magnet; 6. Keycap; 7. Base; 8. Fixing plate. Detailed Implementation
[0023] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods of this utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments.
[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] Example 1
[0028] Please refer to Figures 1 to 4 This utility model provides an ultra-thin magnetic keyboard switch, including a circuit board 1, a Hall element 2 disposed on the circuit board 1, a balance frame assembly 3 disposed on the circuit board 1, a magnetic mounting part 4 formed on the balance frame assembly 3, and a magnet 5 placed in the magnetic mounting part 4 and matched with the Hall element 2. The balance frame assembly 3 includes a first balance frame 31 rotatably disposed on the circuit board 1, a second balance frame 32 rotatably disposed on the first balance frame 31, and an upper cover 33 disposed on the first balance frame 31 and the second balance frame 32. The magnetic mounting part 4 is disposed on any one of the first balance frame 31, the second balance frame 32, and the upper cover 33.
[0029] By setting a magnet 5 on the balance frame assembly 3, the Hall element 2 on the circuit board 1 senses the movement of the magnet 5, thereby achieving precise signal transmission, avoiding the problem of wear between the moving and stationary parts, and ensuring the service life of the keyboard switch. The Hall element 2 can be pre-installed on the circuit board 1, and the magnet 5 is pre-placed in the magnetic mounting part 4. During final assembly, simply snap the balance frame assembly 3 onto the circuit board 1 to complete the assembly, thereby effectively improving production assembly speed and efficiency. By setting the magnetic mounting part 4 on any one of the first balance frame 31, the second balance frame 32, and the top cover 33, the position of the magnetic mounting part 4 can be adjusted according to the internal structure of the keyboard switch, thus saving space within the keyboard switch. The position of the Hall element 2 on the circuit board 1 can be adjusted accordingly. Combined with the structure of the balance frame assembly 3, the overall keyboard switch is made thinner and lighter, meeting the needs of different users. The first balance frame 31, the second balance frame 32, the upper cover 33, the magnet 5, and the Hall element 2 are conventional components in the field, and their specific structures and operating principles are also existing technologies, so they will not be described in detail in this embodiment.
[0030] Regarding the specific structural configuration of the magnetic mounting part 4, as follows: Figures 3 to 4 As shown, the magnetic mounting part 4 includes a connecting limiting plate 41 extending downward from the side of the self-balancing frame assembly 3, a base plate 42 vertically disposed at the lower end of the connecting limiting plate 41, an outer limiting plate 43 formed on the side of the base plate 42 extending upward and symmetrical to the connecting limiting plate 41, and a side limiting plate 44 symmetrically formed on the side of the base plate 42 extending upward and located between the outer limiting plate 43 and the connecting limiting plate 41. When the magnet 5 is installed on the magnetic mounting part 4, its bottom end presses against the base plate 42, and its sides are correspondingly pressed and limited by the connecting limiting plate 41, the outer limiting plate 43, and the side limiting plate 44, thereby fixing the magnet 5 from all four sides, preventing the magnet 5 from shifting or falling off during the operation of the keyboard switch, which would cause the keyboard switch to malfunction and ensure the accurate conduction of the keyboard switch.
[0031] Preferred, such as Figures 3 to 4 As shown, the side limiting plate 44 is in the shape of a "「". The upper end of the "「"-shaped structure is bent and extends to the middle of the upper end of the magnet 5, which can further fix the magnet 5 and prevent the magnet 5 from shifting or falling off during the operation of the keyboard switch, thus preventing the keyboard switch from working and ensuring the accurate conduction of the keyboard switch.
[0032] Preferred, such as Figures 2 to 4As shown, in order to further save space and make the keyboard switch thinner, the Hall element 2 is set on the lower end surface of the circuit board 1 and matches the position of the magnet 5. That is, the Hall element 2 does not occupy the space between the balance frame assembly 3 and the circuit board 1, thereby effectively making room for other structures in the keyboard switch, making the structural space of the keyboard switch more reasonable and efficient, further realizing the thinness of the keyboard switch, and meeting the usage needs of different people.
[0033] Regarding the specific location of the magnetic mounting part 4, such as Figures 3 to 4 As shown, the magnetic mounting part 4 is disposed on the upper cover 33. A hollow clearance groove 331 is formed in the middle of the upper cover 33. The magnetic mounting part 4 is disposed on the inner side wall of the clearance groove 331. The clearance groove 331 formed in the upper cover 33 makes way for other structures inside the keyboard switch, thereby making more reasonable and efficient use of the structural space inside the keyboard switch, further realizing the thinness of the keyboard switch, and meeting the usage needs of different people. By disposing the magnetic mounting part 4 on the inner side wall of the clearance groove 331, the space of the keyboard switch is saved, and its placement on the inner side wall is limited and protected by the side of the upper cover 33, which is conducive to the normal operation of the magnet 5.
[0034] For other structures within this keyboard switch, such as Figures 1 to 4 As shown, this keyboard switch also includes a keycap 6 disposed on the upper cover 33, a base 7 fixed to the first balance frame 31 and the second balance frame 32, and a fixing plate 8 passing through the circuit board 1 to fix the base 7. The keycap 6 is disposed on the upper cover 33 to facilitate pressing and make the pressing force more even. The circuit board 1 is clamped and fixed between the base 7 and the fixing plate 8, thereby effectively preventing the problem that the Hall element 2 on the circuit board 1 cannot accurately sense the movement of the magnet 5 during use due to movement of the circuit board 1. Furthermore, the base 7 fixes the first balance frame 31 and the second balance frame 32, thereby effectively fixing the magnetic mounting part 4 on the balance frame assembly 3 and the magnet 5 placed in the magnetic mounting part 4, preventing the magnet 5 from shifting and falling off during pressing, which would cause the Hall element 2 to be unable to accurately sense the movement of the magnet 5, and further improving the accuracy of this keyboard switch.
[0035] Example 2
[0036] In the first embodiment, the structure of the keyboard switch was described. This embodiment mainly focuses on the differences from other embodiments; identical structures will not be repeated in this embodiment.
[0037] In this second embodiment, the magnetic mounting part 4 is disposed on the inner side wall of the first balance frame 31 and parallel to the Hall element 2. Its parallel structure facilitates the Hall element 2 to sense the movement position of the magnet 5 more evenly, improves the accuracy of the keyboard switch, and effectively prevents the Hall element 2 from being unable to accurately transmit signals due to the tilting of the magnet 5.
[0038] Example 3
[0039] In the first embodiment, the structure of the keyboard switch was described. This embodiment mainly focuses on the differences from other embodiments; identical structures will not be repeated in this embodiment.
[0040] In this third embodiment, the magnetic mounting part 4 is disposed on the inner side wall of the second balance frame 32 and parallel to the Hall element 2. Its parallel structure facilitates the Hall element 2 to sense the movement position of the magnet 5 more evenly, improves the accuracy of the keyboard switch, and effectively prevents the Hall element 2 from being unable to accurately transmit signals due to the tilting of the magnet 5.
[0041] It should be noted that the ultra-thin magnetic keyboard switch disclosed in this utility model is an improvement on the specific structure, but the specific control method is not the innovation of this utility model. The circuit board, Hall element, magnet and other components involved in this utility model can be general standard parts or components known to those skilled in the art. Their structure, principle and control method are known to those skilled in the art through technical manuals or conventional experimental methods.
[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, other structures obtained by using the same or similar technical features as the above embodiments of the present utility model are all within the protection scope of the present utility model.
Claims
1. An ultra-thin magnetic keyboard switch, characterized in that: The device includes a circuit board, a Hall element disposed on the circuit board, a balance frame assembly disposed on the circuit board, a magnetic mounting portion formed on the balance frame assembly, and a magnet inserted into the magnetic mounting portion and matching the Hall element. The balance frame assembly includes a first balance frame rotatably disposed on the circuit board, a second balance frame rotatably disposed on the first balance frame, and a top cover disposed on the first balance frame and the second balance frame. The magnetic mounting portion is disposed on any one of the first balance frame, the second balance frame, and the top cover.
2. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: The magnetic mounting part includes a connecting limiting plate extending downward from the side of the self-balancing frame assembly, a base plate vertically disposed at the lower end of the connecting limiting plate, an outer limiting plate formed on the side of the base plate extending upward and symmetrical to the connecting limiting plate, and a side limiting plate symmetrically formed on the side of the base plate extending upward and located between the outer limiting plate and the connecting limiting plate.
3. The ultra-thin magnetic keyboard switch according to claim 2, characterized in that: The side limiting plate is shaped like the Chinese character "「".
4. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: The Hall element is disposed on the lower end face of the circuit board and its position is matched with that of the magnet.
5. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: The magnetic mounting part is disposed on the upper cover, and a hollow relief groove is formed in the middle of the upper cover. The magnetic mounting part is disposed on the inner side wall of the relief groove.
6. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: The magnetic mounting part is disposed on the inner side wall of the first balance frame and is parallel to the Hall element.
7. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: The magnetic mounting part is disposed on the inner side wall of the second balance frame and is parallel to the Hall element.
8. The ultra-thin magnetic keyboard switch according to claim 1, characterized in that: It also includes a keycap disposed on the upper cover and a base for fixing the first balance frame and the second balance frame.