Spring-free magnetic springback type switch button

Abstract

The invention discloses a spring-free magnetic springback type switch key, which comprises a shell, a shaft rod inserted into the shell, a magnetic column arranged in the shaft rod, an electromagnetic coil positioned in the shell and arranged outside the shaft rod in a surrounding manner, and a trigger assembly mounted in the shell and matched with the shaft rod, the shaft rod is provided with a hollow column body extending downwards, and the magnetic column is located in the hollow column body; an annular wall is arranged on the inner bottom face of the shell in an upward protruding mode, a guide groove matched with the hollow column in the shaft rod is formed, and the guide groove is used for conducting linear guiding on relative matching of the hollow column. And the electromagnetic coil is sleeved outside the ring wall. According to the switch key, the electromagnet is matched with the magnet, rebounding of the key is achieved through magnetic force, and the intensity of feedback force is flexibly changed by adjusting the magnetic force of the electromagnet.

Description

Technical Field

[0001] The present application relates to the field of switch buttons, and in particular to a springless magnetic rebound switch button. Background Art

[0002] In the prior art, mechanical keys are widely used in various electronic devices, mechanical devices and household appliances. Traditional mechanical keys usually use springs to achieve the rebound and feedback force of the keys. This type of key has low design cost, simple structure and mature production process, so it has been widely used. The mechanical structure of the spring can maintain relatively stable performance in long-term use, and at the same time can bring users a clear key feedback experience. However, this spring-based key structure also has its inherent limitations, especially in adapting to different application scenarios and user personalized needs.

[0003] First, the mechanical properties of the spring are determined by its material, shape and size. Once the feedback force is determined, it cannot be easily adjusted during use. Therefore, users cannot change the tactile feedback of the buttons according to specific needs in different situations. For some electronic devices, users may require different feedback forces when performing different operations. For example, in some cases, users may need a lighter feedback force to reduce fatigue, while in other cases they may need a stronger feedback force to provide a clear sense of operation confirmation. Traditional spring designs make it difficult to achieve this flexible change in feedback and cannot meet diverse and personalized needs. Secondly, the spring may deform due to fatigue during long-term use, resulting in button failure or weakened feedback force, which in turn affects the user experience and the service life of the device.

[0004] In addition, the mechanical spring structure has high precision requirements during the design and production process. Especially for miniaturized key devices, the manufacture and assembly of springs have certain technical difficulties, which may increase the manufacturing cost. When faced with the demand for miniaturization and lightweight, traditional mechanical springs are often restricted by complex structures and reduced reliability. At the same time, due to the physical properties of the spring, the elastic feedback of the key is difficult to control through software, which limits the deep integration of keys with modern smart devices and the personalized development of human-computer interaction experience. Summary of the invention

[0005] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a springless magnetic rebound switch button, which uses magnetic force to realize the rebound of the button through the cooperation of electromagnetism and magnet, and flexibly changes the intensity of the feedback force by adjusting the magnetic force of the electromagnetism. This design not only avoids the fatigue failure problem of traditional mechanical springs, but also can achieve fine adjustment of the touch of the button through electronic control, thereby meeting the personalized needs of users in different situations. Compared with traditional mechanical buttons, this magnetic rebound structure has higher flexibility and can adjust the feedback force through simple software settings without changing the physical structure, which significantly improves the adaptability of the button design and the richness of the user experience.

[0006] To achieve the above-mentioned purpose, the present application discloses a springless magnetic rebound switch button, which includes a shell, a shaft inserted into the shell, a magnetic column arranged in the shaft, an electromagnetic coil located in the shell and surrounded by the shaft, and a trigger assembly installed in the shell and cooperating with the shaft, wherein the shaft has a hollow cylinder extending downward, and the magnetic column is located in the hollow cylinder; an annular wall is convexly provided on the inner bottom surface of the shell to form a guide groove cooperating with the hollow cylinder in the shaft, and the guide groove is used for linear guidance of the hollow cylinder for relative cooperation; the electromagnetic coil is sleeved outside the annular wall, and the electromagnetic coil is connected to a driving plate located in the shell, and the driving plate is used to provide a driving current to the electromagnetic coil, and the electromagnetic coil is controlled by the driving plate to generate a magnetic force identical to the magnetic pole of the magnetic column, and the shaft is driven to reset by repelling the same poles; the driving plate has at least two pins extending out of the shell, and is connected to an external circuit through the pins.

[0007] In some embodiments, a light outlet with a light guide is provided on the shell, and at least one light-emitting LED lamp bead is provided in the shell.

[0008] In some embodiments, the trigger component is a switch spring or a photoelectric trigger component. When it is a photoelectric trigger component, a pair of holes is provided at the bottom of the ring arm, a light emitting end is installed at one end of the pair of holes, and a light receiving end opposite to the light emitting end is provided at the other end. When the empty main column in the shaft rod moves downward, the light path is cut off to realize switch triggering.

[0009] In some embodiments, the magnetic column is 1-2 mm higher than the bottom end of the hollow column to prevent the magnetic column from directly colliding with the bottom surface of the shell and affecting the magnetic force.

[0010] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. Flexible adjustment of key feedback force: Through the interaction between the magnetic force generated by the electromagnetic coil and the magnetic column, the feedback force can be flexibly controlled by adjusting the driving current of the electromagnetic coil. This design can meet the diverse needs of users for key feedback force in different situations, greatly improving the personalized experience of key operation.

[0011] 2. Avoid fatigue failure of traditional springs: The spring-free design uses magnetic force to achieve key rebound, eliminating fatigue deformation or failure of traditional mechanical springs due to long-term use, thereby improving the reliability and service life of the keys.

[0012] 3. The structural design is simplified and easy to miniaturize: Compared with the traditional spring structure, the magnetic rebound design reduces the number and complexity of mechanical parts, making the buttons easier to achieve lightweight and miniaturization, which is particularly suitable for the application needs of modern precision equipment.

[0013] 4. Support software control and intelligent adjustment: By controlling the current of the electromagnetic coil through the driver board, the precise adjustment and programmed control of the key feedback force can be achieved, making the keys easier to integrate with smart devices and improving the adaptability and technical level of the keys in human-computer interaction.

[0014] 5. Reduce the damage to the keys caused by physical impact: The height of the magnetic column is reasonably designed to avoid direct impact on the bottom surface of the shell. The shaft is reset by magnetic drive, which effectively reduces mechanical wear and impact and further improves the durability of the keys.

[0015] 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

[0016] 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: Figure 1 It is a structural schematic diagram of an embodiment disclosed in this application.

[0017] Figure 2 It is a structural schematic diagram of an embodiment disclosed in the present application from another perspective.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of an embodiment disclosed in the present application. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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

[0023] Refer to the attached Figure 1-3 The present embodiment provides a springless magnetic rebound switch button, which has a simple and innovative structural design. Through the cooperation between the electromagnet and the magnetic column, the rebound function of the button is realized and an adjustable feedback force is provided. In order to more clearly describe the technical solution, the detailed composition and operation method of the present embodiment are described as follows in combination with the specific structure and action process. However, it should be pointed out that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the present invention.

[0024] In terms of specific structure, the switch button includes a shell 1, a shaft 2 inserted into the shell 1, a magnetic column 4 arranged in the shaft 2, an electromagnetic coil 5 located in the shell 1 and surrounded by the shaft 2, and a trigger assembly installed in the shell 1 and matched with the shaft 2. Through the ingenious design and connection of each part, the button has excellent feedback performance and flexible and adjustable rebound force. The following describes in detail the design principle, working process and action steps of each component after the components are matched. The embodiments of the present invention should not be understood as being limited to this, but can be appropriately improved and adjusted without departing from the principles of the present invention.

[0025] First, the shell 1 provides mechanical support and protection for the entire switch button. The shell 1 is made of wear-resistant and impact-resistant engineering plastics or metal materials to ensure that it can withstand external mechanical stress during long-term use and provide a stable support structure. On the inner bottom surface of the shell 1, an annular wall is protruded upward, and the annular wall forms a guide groove that cooperates with the hollow rod 3 in the shaft 2. The guide groove is used to realize the linear guide function of the shaft 2, ensuring that the movement trajectory of the shaft 2 during pressing and rebounding is accurate and without deviation. This design is intended to ensure the stability and accuracy of the key operation.

[0026] The shaft 2 has a hollow rod 3 extending downward, and a magnetic column 4 is arranged inside the shaft 2. The magnetic column 4 is usually made of strong magnetic materials such as neodymium iron boron, which can provide stable and sufficient magnetic force during the key operation. The magnetic column 4 is fixed in the hollow rod 3, and after the key is pressed to the bottom, it can rebound by using the magnetic force generated by the electromagnetic coil 5, thereby driving the shaft 2 back to the initial position. The shaft 2 realizes up and down linear motion through the guiding effect of the guide groove, which can prevent the key from shifting during the pressing process and ensure the stability and accuracy of the key operation. It should be pointed out that any changes in the above structure can be implemented based on the knowledge of those skilled in the art without departing from the scope of the present invention.

[0027] An electromagnetic coil 5 is installed around the outside of the ring wall, and the electromagnetic coil 5 is connected to the external power circuit through the drive board 6. The electromagnetic coil 5 is wound with copper wire with high conductivity, and the drive board 6 is used to provide driving current to the electromagnetic coil 5. When the user presses the button, the drive board 6 controls the power-on state of the electromagnetic coil 5, so that it produces the same magnetic pole direction as the magnetic column 4, and uses the principle of like poles repelling each other to repel the magnetic column 4, thereby achieving a thrust on the shaft 2 and quickly resetting the button. This magnetic reset method effectively replaces the traditional mechanical spring structure, avoids the performance degradation problem caused by spring fatigue, and significantly improves the durability and operational stability of the button. Those skilled in the art will understand that the current intensity of the electromagnetic coil 5 and its control method can be flexibly adjusted according to actual application requirements.

[0028] The magnitude of the feedback force is achieved by adjusting the current intensity in the electromagnetic coil 5, and the drive board 6 can flexibly control the magnitude of the current. For example, when a lighter feedback force is required, the drive board 6 will reduce the intensity of the current, so that the repulsive force generated by the electromagnetic coil 5 is reduced, so that the user feels more relaxed and comfortable when pressing the key. When a stronger feedback force is required, the drive board 6 will increase the current intensity, so that the electromagnetic coil 5 produces a stronger repulsive force, thereby providing the user with a more powerful feedback when pressing the key. This method of adjusting the feedback force by current allows the button to adapt to different usage scenarios and user preferences, thereby achieving a highly personalized interactive experience. For example, in a game controller, the player can adjust the feedback force of the button through software, and can choose gentle feedback to reduce operating fatigue, or stronger feedback to obtain a clear sense of operation confirmation. Without departing from the basic concept of the present invention, the magnitude of the current and the adjustment method can be appropriately changed to adapt to specific application requirements.

[0029] The trigger component is arranged between the shaft 2 and the housing 1, and is used to realize the trigger sensing function of the key operation. The trigger component can select a switch spring or a photoelectric trigger component. The switch spring uses mechanical contact to realize the opening and closing function of the key. Its material is a metal with good elasticity and conductivity, such as copper alloy or stainless steel, which can provide a stable electrical trigger signal. In the application scenario of the photoelectric trigger component, the emission and reception of light are realized by the holes set at the bottom of the ring arm. When the shaft 2 moves downward during the pressing process, the path of the light is blocked, and the switch trigger is realized. This design has the advantages of high sensitivity and no wear, and is suitable for scenarios that require precise triggering and high-frequency operation. The selection of the above scheme can be changed according to the specific application scenario, and these changes should be regarded as one of the embodiments of the present invention.

[0030] In order to further enhance the user experience, a light outlet with a light guide is designed on the shell 1, which is used to guide the light of the internal light-emitting components (such as LED lamp beads) so that the keys can be clearly seen in a dark environment. The LED lamp beads arranged in the keys are made of high-brightness, low-power materials, and the light is turned on and off by the driver board 6. The design of the light guide can evenly distribute the light emitted by the lamp beads on the surface of the keys, so that the keys can achieve obvious visual prompts in a dark environment, which is convenient for users to perform precise operations. For example, on the audio control panel at night, the visibility of the keys can be effectively improved through the guidance of the light guide, so that the user can accurately find the position of the keys without the help of an external light source. This design of the present invention is suitable for a variety of scenarios that require operation under low-light conditions, and has significant application effects.

[0031] In order to prevent the magnetic column 4 from directly colliding with the bottom of the shell 1 during the key pressing process, the length of the magnetic column 4 is designed to be slightly higher than the bottom end of the hollow rod 3 by 1-2 mm, so that when the key is fully pressed, the magnetic column 4 will still not directly contact the bottom surface of the shell 1, thereby avoiding damage to the magnetic column 4 or changes in magnetic force caused by impact. This design detail effectively improves the durability of the key and reduces mechanical loss, ensuring that good key performance is maintained during long-term use. Those skilled in the art will understand that this anti-collision design can be adjusted according to the needs of different application scenarios, and these adjustments should be regarded as an extension of the present invention.

[0032] This embodiment realizes the rebound function of the key through the interaction between the electromagnetic coil 5 and the magnetic column 4, and has the characteristics of flexible adjustment of feedback force, reliable structural performance and intelligent control. In application scenarios, such as in the control system of a smart home, users can adjust the rebound force of the key through a software application, and flexibly adjust the touch of the key in combination with specific usage requirements to provide a better user experience. Through this design, not only the convenience and personalization of key operation are enhanced, but also common problems in traditional mechanical keys, such as spring fatigue and mechanical wear, are avoided, significantly improving the life and reliability of the product.

[0033] 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 springless magnetic rebound switch button, characterized in that: The switch button comprises: a shell, a shaft inserted into the shell, a magnetic column arranged in the shaft, an electromagnetic coil located in the shell and surrounded by the shaft, and a trigger assembly installed in the shell and matched with the shaft, wherein the shaft has a hollow cylinder extending downward, and the magnetic column is located in the hollow cylinder; an annular wall is convexly provided on the inner bottom surface of the shell to form a guide groove matched with the hollow cylinder in the shaft, and the guide groove is used for linear guidance of the hollow cylinder in relative matching; the electromagnetic coil is sleeved outside the annular wall, and the electromagnetic coil is connected to a driving board located in the shell, and the driving board is used to provide a driving current to the electromagnetic coil, and the electromagnetic coil is controlled by the driving board to generate a magnetic force with the same magnetic pole as the magnetic column, and the shaft is driven to reset by repelling the same poles; the driving board has at least two pins extending out of the shell, and is connected to an external circuit through the pins.

2. A springless magnetic rebound switch button as claimed in claim 1, characterized in that: The shell is provided with a light outlet with a light guide sheet, and at least one light-emitting LED lamp bead is arranged in the shell.

3. A springless magnetic rebound switch button as claimed in claim 1, characterized in that: The trigger component is a switch spring or a photoelectric trigger component. When it is a photoelectric trigger component, a pair of holes is provided at the bottom of the ring arm, a light emitting end is installed at one end of the pair of holes, and a light receiving end opposite to the light emitting end is provided at the other end. When the empty main column in the shaft rod moves downward, the light path is cut off to realize switch triggering.

4. A springless magnetic rebound switch key as claimed in claim 1, characterized in that: The magnetic column is 1-2 mm higher than the bottom end of the hollow column to prevent the magnetic column from directly colliding with the inner bottom surface of the shell.

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