Key switch assembly, key switch and keyboard

Abstract

The utility model is applicable to the field of input devices, and provides a key switch assembly, a key switch and a keyboard, the key switch assembly comprises a base with openings at the upper and lower ends; the shaft body is movably arranged in the base; the magnetic part is arranged on the shaft body; one end of the elastic piece is connected with the shaft body and the other end is connected with the base; the upper cover and the lower cover respectively cover the upper end opening and the lower end opening of the base; wherein a detection PCB is arranged in an opening in the lower end of the base, a magnetic sensor coupled with the magnetic part is arranged on the detection PCB, and the detection PCB is packaged in the base through the lower cover. Because the magnetic sensor and the detection PCB configured for the magnetic sensor are packaged in the base together, in the manufacturing process, once the key switch assembly is assembled, the magnetic sensor and the detection PCB which are arranged in the key switch assembly cannot be influenced by subsequent processes, so that the distance between the magnetic part and the magnetic sensor can be accurately controlled, and the reliability of the key switch assembly is improved. And the accuracy of the key is improved.

Description

Technical Field

[0001] This utility model belongs to the field of input devices, and particularly relates to a key switch assembly, a key switch, and a keyboard. Background Technology

[0002] Input devices often use switches to achieve interaction, and the structure and performance of switches vary considerably across different application areas. For example, in keyboard devices, the switch is usually a button; the user presses the button to trigger the button switch to input a signal, thereby issuing a command. Therefore, improving the accuracy of button switches has become a key concern in this field.

[0003] To address this issue, magnetic push-button switches have been proposed. These switches typically include a button housing, inside which are a shaft and a magnetic component. An external magnetic sensor detects the magnetic field of the magnetic component. When a user presses the button, the shaft shifts, causing the magnetic component to move as well. The magnetic sensor detects the change in the magnetic field caused by this change in distance and triggers the push-button switch accordingly.

[0004] In existing magnetic push-button switches, the magnetic sensor needs to be mounted on a PCB board, which powers and transmits signals to it. However, since the PCB board is located outside the button housing and is usually larger than the button housing, it is prone to deformation during manufacturing, resulting in errors. This makes it difficult to control the distance between the magnetic component and the magnetic sensor, causing insufficient accuracy of the push-button switch and failing to meet usage requirements. Utility Model Content

[0005] This utility model provides a key switch assembly, a key switch, and a keyboard, aiming to solve the problem that the key switch assembly, key switch, and keyboard provided by the prior art have insufficient accuracy and cannot meet the needs of use.

[0006] In a first aspect, this utility model provides a push-button switch assembly, comprising:

[0007] The base has openings at both the top and bottom;

[0008] A shaft is movable within the base;

[0009] Magnetic components disposed on the shaft;

[0010] An elastic element with one end connected to the shaft and the other end connected to the base; and

[0011] The upper cover and lower cover are respectively installed on the upper and lower openings of the base;

[0012] The base has a detection PCB board inside the lower opening, and a magnetic sensor coupled to the magnetic component is provided on the detection PCB board. The lower cover encapsulates the detection PCB board inside the base.

[0013] Optionally, the orthographic projection of the magnetic element on the detection PCB board at least partially covers the magnetic sensor.

[0014] Optionally, the lower cover is provided with a receiving groove for accommodating the magnetic sensor.

[0015] Optionally, the detection PCB board is provided with a number of wiring terminals extending to the outside of the base.

[0016] Optionally, the lower cover is provided with a plurality of through holes corresponding to the wiring terminals, and the wiring terminals extend through the through holes to the outside of the base.

[0017] Optionally, the base is provided with a guide post, and the shaft is provided with a guide part that cooperates with the guide post.

[0018] Optionally, the magnetic component is a magnet, and the magnetic sensor is any one of a Hall effect sensor, a magnetoresistive sensor, or a magnetoelectric induction sensor.

[0019] Optionally, the detection PCB board is disposed in the lower opening of the base by any one of the following methods: snap-fit ​​connection, top pressure connection, ultrasonic welding, or in-mold injection molding.

[0020] Secondly, this utility model provides a push-button switch, including at least one push-button switch assembly as described in any embodiment; and

[0021] A connecting seat is provided at the lower end of the base;

[0022] The main control PCB board is located at the connector and coupled to the detection PCB board.

[0023] Thirdly, this utility model provides a push-button switch, including at least one push-button switch as described in any of the embodiments.

[0024] The beneficial effects achieved by this utility model are as follows: The key switch assembly, key switch and keyboard provided by this utility model are all encapsulated in the base together with the magnetic sensor and the detection PCB board configured for it. During the manufacturing process, once the key switch assembly is assembled, the magnetic sensor and the detection PCB board set inside it will no longer be affected by the subsequent processes, thereby ensuring that the distance between the magnetic component and the magnetic sensor is accurately controlled, thereby improving the accuracy of the key.

[0025] Since the magnetic components, magnetic sensors, and their associated detection PCBs are all built into the base, they are not affected by external factors during operation, ensuring that the switch can be triggered stably. This provides leeway for adding functional modules beyond the push-button switch assembly and expands the scope of application.

[0026] The key switch assembly can be connected to an existing keyboard motherboard via a connector. Users can replace the key switch assembly provided by this utility model in their existing keyboards as needed, thereby increasing the degree of personalization. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the push button switch assembly provided by this utility model;

[0028] Figure 2 This is an exploded view of the push button switch assembly provided by this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the lower cover of the push button switch assembly provided by this utility model;

[0030] Figure 4 This is a schematic diagram of the detection PCB board of the push button switch assembly provided by this utility model;

[0031] Figure 5 This is an exploded structural diagram of the shaft and base of the push button switch assembly provided by this utility model.

[0032] Among them, 10 is the top cover; 20 is the shaft; 21 is the guide part; 30 is the magnetic component; 40 is the elastic component; 50 is the base; 51 is the guide post; 61 is the detection PCB board; 62 is the magnetic sensor; 63 is the wiring terminal; 70 is the bottom cover; 71 is the receiving groove; and 72 is the through hole. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0034] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", 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.

[0035] 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 the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] Example 1

[0040] Combination Figure 1 and Figure 2 As shown, this embodiment provides a push-button switch assembly, including:

[0041] A base 50 with openings at the top and bottom;

[0042] The shaft 20 is located within the base 50;

[0043] Magnetic component 30 is provided on the shaft 20;

[0044] An elastic element 40, with one end connected to the shaft 20 and the other end connected to the base 50; and

[0045] The upper cover 10 and the lower cover 70 are respectively installed on the upper and lower openings of the base 50;

[0046] The base 50 has a detection PCB board 61 inside the lower opening. The detection PCB board 61 is equipped with a magnetic sensor 62 coupled to the magnetic component 30. The lower cover 70 encapsulates the detection PCB board 61 inside the base 50.

[0047] In this embodiment of the invention, the push-button switch assembly can be a component of the push-button switch, used to receive signals, then transmit and process signals, and finally trigger the switch and output signals. Specifically, the signal received by the push-button switch assembly can be generated by the user pressing the button. This pressing action can cause the shaft 20 to move along its own central axis, thereby causing the magnetic component 30 to move closer to or further away from the magnetic sensor 62. The change in distance between the magnetic component 30 and the magnetic sensor 62 can cause a corresponding change in the magnetic field detected by the magnetic sensor 62. Switch triggering conditions can be set for this change in magnetic field. For example, when the distance between the magnetic component 30 and the magnetic sensor 62 is less than a specific value or range, the switch is triggered to turn on; otherwise, the switch is not triggered and remains closed. It is understood that the switch triggering conditions can be set according to actual usage needs and are not limited to the distance condition between the magnetic component 30 and the magnetic sensor 62 mentioned above, and are not specifically limited here. In this way, the switch can be triggered without physical contact between the magnetic component 30 and the magnetic sensor 62. Compared with existing mechanical switches, there is no situation where wear leads to abnormal performance or even failure, ensuring the stability and accuracy of the button and extending its service life.

[0048] In this embodiment, the push-button switch assembly includes a base 50 for accommodating other components for installation and operation. The base 50 has openings at its upper and lower ends. The "upper end" refers to the end of the base 50 closest to the point of force application when the user presses the button; the "lower end" refers to the end of the base 50 furthest from the point of force application when the user presses the button. During assembly, components can be inserted into the base 50 through their corresponding openings. During operation, depending on the actual situation, some components can partially or completely protrude from their corresponding openings. Generally, the volume of the base 50 is larger than the components housed within it (such as the shaft 20, magnetic component 30, elastic component 40, magnetic sensor 62, and detection PCB board 61), allowing the base 50 to completely enclose the components, thereby protecting them from damage and providing a stable working environment. In some cases, the volume of the base 50 may be smaller than the components housed within it. In this case, as long as the base 50 can provide an installation position and working space for the components, the components should also be considered to be housed within the base 50.

[0049] In this embodiment, the shaft 20 is movably disposed within the base 50. Therefore, the base 50, in addition to the accommodating space, also has a movable space for the shaft 20 to move. In some cases, the shaft 20 can extend partially or completely from the opening at the upper end of the base 50 when it moves. During use, the pressure applied by the user pressing the button can be applied directly or indirectly to the shaft 20. That is, when the user presses the button, they can directly contact the shaft 20 and apply pressure to the shaft 20 itself, or directly contact other components and transmit the pressure to the shaft 20 through other components. In some embodiments, the shaft 20 can be set as a cylinder, a quadrangular prism, a polygonal prism, or other regular and irregular shapes, which are not specifically limited here. Preferably, the shaft 20 is cylindrical, which allows the shaft 20 to rotate around its own central axis during use, avoiding the problem of stress concentration caused by the corners colliding with each other, leading to damage and failure. During operation, the shaft 20 can move up and down along its own central axis, thereby moving closer to or away from the magnetic sensor 62.

[0050] In this embodiment, the magnetic element 30 is disposed on the shaft 20. Specifically, the shaft 20 can be a hollow structure with the magnetic element 30 disposed in the hollow position, or the magnetic element 30 can be disposed on the outer surface, or the upper and lower end faces of the shaft 20. When the shaft 20 moves, it can drive the magnetic element 30 to move together with the shaft 20. It can be understood that the magnetic element 30 can be fixedly disposed on the shaft 20. In this case, during the movement of the shaft 20, the magnetic element 30 and the shaft 20 always remain relatively stationary. Alternatively, the magnetic element 30 can be movably disposed on the shaft 20. In this case, during the movement of the shaft 20, the magnetic element 30 can also move relative to the shaft 20. One or more magnetic elements 30 can be disposed in the shaft 20. When multiple magnetic elements 30 are disposed, the shape and type of each magnetic element 30 can be the same or different, and no specific limitation is made here. In this embodiment, there is one magnetic element 30, which is placed inside the shaft 20. When the magnetic component 30 is moved by the shaft 20, it can move closer to or further away from the magnetic sensor 62. At this time, the magnetic sensor 62 can detect the change in magnetic field.

[0051] In this embodiment, the base 50 is provided with an elastic element 40 for resetting the shaft 20. One end of the elastic element 40 is connected to the shaft 20, and the other end is connected to the base 50; that is, the elastic element 40 is disposed between the shaft 20 and the base 50. Specifically, one end of the elastic element 40 may be connected to the lower end of the shaft 20, and the other end may be connected to the inner bottom surface of the base 50. When the button is not pressed, the elastic element 40 is in a naturally extended state, lifting the shaft 20. When the user presses the button to move the shaft 20 downward, the elastic element 40 contracts under force, undergoes elastic deformation, and accumulates elastic force until the user releases the button. At this time, the force on the elastic element 40 disappears, the accumulated elastic force is released, and it returns to the extended state, thereby lifting the shaft 20 again and resetting it.

[0052] In this embodiment, a top cover 10 is also provided over the upper opening of the base 50. During assembly, after the shaft 20, magnetic component 30, and elastic component 40 are respectively installed into the base 50, the top cover 10 can be placed over the upper opening of the base 50. This prevents the aforementioned components from detaching from the base 50, thereby ensuring the integrity and stability of the push-button switch assembly structure. In addition, it also protects the components inside the base 50 from interference. It is understood that the top cover 10 does not need to completely seal the upper opening of the base 50. The top cover 10 itself can also have openings, through holes, etc., for ventilation, heat dissipation, and clearance. For example, clearance holes can be provided at the upper end of the top cover 10, allowing the shaft 20 to extend fully or partially through the clearance holes during operation.

[0053] In this embodiment, a detection PCB board 61 is provided in the lower opening of the base 50, and a magnetic sensor 62 coupled to the magnetic component 30 is provided on the detection PCB board 61. This lower opening can be connected to the upper opening, or it can be separated from the upper opening to form a relatively independent receiving space for mounting the detection PCB board 61 and the magnetic sensor 62. It can be understood that the coupling between the magnetic sensor 62 and the magnetic component 30 means that they can transmit signals to each other, and when the properties of either one change, it can affect the other, causing it to undergo a similar change. In this embodiment, the magnetic component 30 may move closer to or further away from the magnetic sensor 62 as the shaft 20 moves, causing its own magnetic field to change, thereby affecting the magnetic sensor 62 to undergo a corresponding change. The detection PCB board can trigger a switch based on this change signal. The detection PCB board 61 can be used to power the magnetic sensor 62 and to receive, process, and transmit signals excited or detected by the magnetic sensor 62.

[0054] In this embodiment, the lower opening of the base 50 is covered by a lower cover 70, which encapsulates the detection PCB board 61 within the base 50. It can be understood that, in this encapsulated state, the detection PCB board 61, along with the magnetic sensor 62 mounted thereon, is completely enclosed within the lower opening of the base 50, and neither the base 50 nor the lower cover 70 is exposed. However, structures or components that enable electrical connection to the outside, such as pins and terminals 63, can be exposed from the base 50 or the lower cover 70. During manufacturing, the magnetic sensor 62 can be first attached to the detection PCB board 61 using methods such as SOT (Small Outline Transistor) or QFN (Quad Flat No-leads Package), and then the detection PCB board 61 can be placed into the accommodating space of the lower opening of the base 50. The shape and size of the detection PCB board 61 can be set according to actual needs; for example, the area of ​​the detection PCB board can be reduced to fit a smaller accommodating space. This allows for fixing the mounting position of the detection PCB board 61, thereby precisely controlling the distance between the magnetic component 30 and the magnetic sensor 62.

[0055] The push button switch assembly provided by this utility model has the magnetic sensor 62 and the detection PCB board 61 configured for it encapsulated together in the base 50. During the manufacturing process, once the push button switch assembly is assembled, the magnetic sensor 62 and the detection PCB board 61 set inside it will no longer be affected by subsequent processes, thereby ensuring that the distance between the magnetic component 30 and the magnetic sensor 62 is accurately controlled, thereby improving the accuracy of the button.

[0056] Since the magnetic component 30, the magnetic sensor 62, and the detection PCB board 61 configured for them are all built into the base 50, they are not affected by external factors during operation, ensuring that the switch can be triggered stably. This provides leeway for adding functional modules in addition to the push button switch assembly and expands the scope of application.

[0057] Example 2

[0058] Combination Figures 1 to 2 As shown, the orthographic projection of the magnetic component 30 on the detection PCB board 61 provided in this embodiment at least partially covers the magnetic sensor 62.

[0059] In this embodiment of the invention, orthographic projection refers to the projection of the magnetic component 30 onto the detection PCB board 61 along the central axis of the shaft 20. This projection, which at least partially covers the magnetic sensor 62, allows the magnetic field of the magnetic component 30 to be more regularly and evenly distributed within the detection range of the magnetic sensor 62, thereby increasing detection sensitivity. The positions of the magnetic component 30 and the magnetic sensor 62 within the base 50 can be set according to actual usage requirements. Preferably, the magnetic component 30 and the magnetic sensor 62 can be arranged together on the central axis of the base 50, and the orthographic projection of the magnetic component 30 on the detection PCB board 61 can completely cover the magnetic sensor 62. That is, the magnetic component 30 is positioned directly opposite the magnetic sensor 62. This results in a more regular and uniform overall component layout for the push-button switch assembly, facilitating adaptability design of the lower cover 70 for the detection PCB board 61 and the magnetic sensor 62, such as adding a receiving structure or a protective structure.

[0060] Example 3

[0061] Combination Figure 3 As shown, the lower cover 70 provided in this embodiment is provided with a receiving groove 71 that can accommodate the magnetic sensor 62.

[0062] In this embodiment of the invention, because the magnetic sensor 62 has a greater thickness than the detection PCB board 61, a raised area is formed when the magnetic sensor 62 is placed on the detection PCB board 61. In some cases, this raised area may extend beyond the lowest point of the base 50. By providing a receiving groove 71, the magnetic sensor 62, along with the raised area, can be encapsulated, thus protecting the magnetic sensor 62. Furthermore, it is compatible with ordinary shaft holes.

[0063] Example 4

[0064] Combination Figure 1 As shown, the detection PCB board 61 provided in this embodiment is provided with a plurality of wiring terminals 63 extending to the outside of the base 50.

[0065] In this embodiment of the invention, the detection PCB board 61 is provided with a plurality of terminals 63 for electrical connection with external components, thereby enabling power supply to the detection PCB board 61 and the magnetic sensor 62, as well as signal transmission to external components. The terminals 63 can extend from the base 50 or from the lower cover 70. It is understood that the number, shape, and location of the terminals 63 can be set according to actual usage needs, and are not specifically limited here.

[0066] Example 5

[0067] Combination Figures 3 to 4 As shown, the lower cover 70 provided in this embodiment is provided with a plurality of through holes 72 corresponding to the wiring terminals 63, and the wiring terminals 63 extend through the through holes 72 to the outside of the base 50.

[0068] In this embodiment of the utility model, the terminal block 63 extends through a through hole 72 provided on the lower cover 70, and the position of the through hole 72 corresponds to the terminal block 63. The number of through holes 72 is not less than the number of terminal blocks 63, that is, the number of through holes 72 can be more than the number of terminal blocks 63, thereby leaving a margin and increasing the compatibility range.

[0069] Example 6

[0070] Combination Figure 5 As shown, the base 50 provided in this embodiment is provided with a guide post 51, and the shaft 20 is provided with a guide part 21 that cooperates with the guide post 51.

[0071] In this embodiment of the invention, when the shaft 20 is installed into the base 50, it can be positioned by the cooperation of the guide part 21 and the guide post 51. During operation, the guide post 51 can restrict the left and right movement of the guide part 21, thereby limiting the range of motion of the shaft 20 to the up and down directions and ensuring stability.

[0072] Example 7

[0073] Combination Figures 1 to 2 As shown, the magnetic component 30 provided in this embodiment is a magnet, and the magnetic sensor 62 is any one of a Hall effect sensor, a magnetoresistive sensor, or a magnetoelectric induction sensor.

[0074] In this embodiment of the invention, the magnetoresistive sensor can be any one of an AMR (Anisotropic Magneto Resistance) sensor, a GMR (Giant Magneto Resistance) sensor, or a TMR (Tunneling Magneto Resistance) sensor.

[0075] The magnet and any of the aforementioned magnetic sensors 62 can be stably coupled, adapting to applications where push-button switches require repeated triggering. Furthermore, they are inexpensive, readily available, and easy to manufacture.

[0076] Example 8

[0077] Combination Figures 1 to 2 As shown, the detection PCB board 61 provided in this embodiment is disposed in the lower opening of the base 50 by any one of the following methods: snap-fit ​​connection, top pressure connection, ultrasonic welding, or in-mold injection molding.

[0078] In this embodiment of the utility model, a snap-fit ​​connection is adopted, which makes the installation and disassembly of the test PCB board 61 more convenient, and disassembly can be achieved without the use of tools.

[0079] The top-pressure connection ensures a tight connection between the detection PCB board 61 and the base 50, enabling it to withstand large tensile, compressive, and bending forces. It also provides excellent sealing and shock resistance, ensuring the safe and stable operation of the push-button switch assembly.

[0080] Ultrasonic welding eliminates the need for solvents, adhesives, or other auxiliary materials, simplifying the process and improving manufacturing efficiency.

[0081] By using in-mold injection molding, the forming and connection of the PCB board 61 can be completed simultaneously during manufacturing, which reduces the time consumption and the low scrap yield, thus saving more raw materials.

[0082] Example 9

[0083] Combination Figure 1 and Figure 5 As shown, this embodiment provides a push-button switch, including at least one push-button switch assembly as described in any embodiment; and a connector (not shown) disposed at the lower end of the base 50.

[0084] The main control PCB board (not shown in the figure) is located at the connector and coupled to the detection PCB board 61.

[0085] In this embodiment of the invention, the push-button switch assembly can be considered as a major component of the push-button switch. A connector is provided at the lower end of the base 50, allowing the push-button switch to be connected to external devices. For example, the connector can mate with a corresponding connector on the keyboard motherboard, thus enabling it to be mounted on a keyboard device. In this embodiment, the push-button switch can be connected to existing keyboards and other devices via the connector, expanding its adaptability. The connector also houses a main control PCB board, which is coupled to the detection PCB board 61 in the push-button switch assembly. That is, the two are electrically connected and can transmit and process signals to each other. The main control PCB board enables power supply and control of the detection PCB board 61 and the magnetic sensor 62.

[0086] In this embodiment, the key switch assembly can be connected to an existing keyboard motherboard via a connector. Users can replace the key switch assembly provided by this utility model in their existing keyboards as needed, thereby increasing the degree of personalization.

[0087] Example 10

[0088] Combination Figures 1 to 5 As shown, this embodiment provides a keyboard, including at least one key switch as described in any embodiment.

[0089] In this embodiment of the invention, keycaps and other components may be added to the key switch to form a complete keypad. The key switch in this embodiment can be placed on any key position to form a keyboard together with existing key switches, or it can be placed on all key positions. In this embodiment, the user can freely configure the keys according to their needs, resulting in a higher degree of personalization.

[0090] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A push-button switch assembly, characterized in that, include: The base has openings at both the top and bottom; A shaft is movable within the base; Magnetic components disposed on the shaft; An elastic element with one end connected to the shaft and the other end connected to the base; and The upper cover and lower cover are respectively installed on the upper and lower openings of the base; The base has a detection PCB board inside the lower opening, and a magnetic sensor coupled to the magnetic component is provided on the detection PCB board. The lower cover encapsulates the detection PCB board inside the base.

2. The push-button switch assembly according to claim 1, characterized in that, The magnetic component's orthogonal projection on the detection PCB at least partially covers the magnetic sensor.

3. The push-button switch assembly according to claim 2, characterized in that, The lower cover is provided with a receiving groove for accommodating the magnetic sensor.

4. The push-button switch assembly according to claim 1, characterized in that, The detection PCB board is provided with several wiring terminals that extend to the outside of the base.

5. The push-button switch assembly according to claim 4, characterized in that, The lower cover is provided with several through holes corresponding to the wiring terminals, and the wiring terminals extend through the through holes to the outside of the base.

6. The push-button switch assembly according to claim 1, characterized in that, The base is provided with a guide post, and the shaft is provided with a guide part that cooperates with the guide post.

7. The push-button switch assembly according to claim 1, characterized in that, The magnetic component is a magnet, and the magnetic sensor is any one of a Hall effect sensor, a magnetoresistive sensor, or a magnetoelectric induction sensor.

8. The push-button switch assembly according to claim 1, characterized in that, The detection PCB board is installed in the lower opening of the base by any one of the following methods: snap-fit ​​connection, top pressure connection, ultrasonic welding, or in-mold injection molding.

9. A push-button switch, characterized in that, Includes at least one push-button switch assembly as described in any one of claims 1-8; and A connecting seat is provided at the lower end of the base; The main control PCB board is located at the connector and coupled to the detection PCB board.

10. A keyboard, characterized in that, It includes at least one push-button switch as described in claim 9.

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