Switch button with non-Newtonian fluid column

Abstract

The invention discloses a switch button with a non-Newtonian fluid column, the switch button comprises a base shell and a shaft rod inserted into the base shell, the bottom end of the shaft rod is recessed inwards to form a columnar channel, and an impact rod is partially inserted into the columnar channel from the bottom end to form a slidable piston type structure. A non-Newtonian fluid is arranged in a variable cavity formed by matching the impact rod with the columnar channel, a groove is formed in the inner wall surface of the annular channel, and the non-Newtonian fluid partially enters the groove when being solidified, so that the non-Newtonian fluid forms a fixed position, and the impact rod impacts the inner bottom surface of the base shell; the cylindrical groove channel is further provided with a fixing structure used for restraining the lowest position of the impact rod, so that the shaft rod is installed in the cylindrical groove channel and provided with a lower stop stroke position. According to the switch key, the non-Newtonian fluid has unique physical characteristics, and the viscosity of the non-Newtonian fluid can be changed according to the applied pressure or shear rate.

Description

Technical Field

[0001] The present application relates to the field of switch buttons, in particular to a switch button with a non-Newtonian fluid column. Background Art

[0002] Existing switch button technology mainly provides tactile feedback through mechanical structure or electrical signals. Common button designs include spring buttons, membrane buttons and electronic touch buttons, which usually rely on elastic materials or current changes to generate feedback when operated. Spring buttons are widely used because they can provide more obvious physical feedback, but their feedback is mostly a single rebound force, and the response is relatively consistent when hit quickly or pressed strongly. Membrane buttons and electronic touch buttons work based on electrical principles, but due to the lack of direct physical feedback, these buttons are relatively weak in user experience and cannot provide clear and varied tactile feedback.

[0003] Although existing switch button technologies have met market demand to a certain extent, their feedback methods are usually relatively simple and lack diversified responses. For example, although spring buttons can provide a certain feedback force, their feedback is too simple and cannot provide different responses according to the user's pressing force or speed changes. Although membrane buttons and touch buttons are simple in design, they often give people a "rigid" feeling and lack personalized experience because they cannot adjust the feedback method. However, these technologies are insufficient to meet user needs when facing devices that require higher interactivity.

[0004] The fundamental reason for this deficiency is that the existing technology fails to fully utilize the dynamic changes in fluid properties to achieve feedback diversity. Especially in terms of tactile feedback, the traditional mechanical structure and electrical principles cannot provide sufficient sensitivity to distinguish different pressing methods and speeds, resulting in uniform feedback. As users' requirements for operating experience increase, a single feedback method cannot meet the needs of personalization and high quality.

[0005] Therefore, it is particularly important to develop new switch buttons with non-Newtonian fluid columns. Summary of the invention

[0006] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a switch button with a non-Newtonian fluid column, which utilizes the unique physical properties of non-Newtonian fluids, and its viscosity can change according to the applied pressure or shear rate. This means that when the user applies different forces to the switch button or presses at different speeds, the button can adaptively adjust the feedback feeling. In particular, when hitting hard and quickly, the non-Newtonian fluid can provide a crisp return sound, while a softer, muffled sound is produced when tapping lightly. This feedback can not only enrich the user's operating experience, but also provide more diverse tactile options, thereby improving the interactivity and comfort of the device.

[0007] To achieve the above-mentioned purpose, the present application discloses a switch button with a non-Newtonian fluid column, which includes a base shell and a shaft rod inserted into the shell, wherein the bottom end of the shaft rod is concave to form a columnar groove, and an impact rod is inserted into the columnar groove from the bottom part to form a slidable piston structure. The variable chamber formed by the impact rod and the columnar groove contains a non-Newtonian fluid, and the inner wall of the annular groove is provided with a groove. When the non-Newtonian fluid solidifies, part of it enters the groove, so that the non-Newtonian fluid forms a fixed position, and the impact rod impacts the bottom surface of the base shell; the columnar groove is also provided with a fixed structure for constraining the lowest position of the impact rod, so that the shaft rod is installed in the columnar groove and has a lower stop position.

[0008] In some embodiments, the base shell includes a base and an upper cover, and the base and the upper cover are detachably connected to form a mounting cavity for accommodating the shaft rod.

[0009] In some embodiments, the inner bottom surface of the base is recessed with a bottom groove that matches the impact rod.

[0010] In some embodiments, the bottom of the impact rod is spherical.

[0011] In some embodiments, the cylindrical channel allows the shaft to be completely retracted therein.

[0012] In some implementations, a return spring cooperating with the shaft rod is disposed in the base shell.

[0013] In some embodiments, the shaft portion extends out of the base shell and is connected and cooperated with a key cap of a part.

[0014] In some embodiments, a magnetic block is disposed on the shaft rod, and correspondingly, a Hall sensor is disposed in the base shell opposite to the magnetic block.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. Provide diverse tactile feedback: Utilizing the characteristics of non-Newtonian fluids, buttons can adaptively adjust feedback based on applied pressure or speed changes, enhancing user experience.

[0016] 2. Rich sound feedback: Non-Newtonian fluids produce different sound effects (such as crisp recoil or soft muffled sound) under different pressing methods, improving interactivity.

[0017] 3. Improve equipment interactivity and comfort: Through adaptive feedback mechanism, meet personalized needs and make equipment operation more intuitive and comfortable.

[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: Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment disclosed in the present application.

[0020] Figure 2 It is a schematic diagram of the structure after the central axis rod and the impact rod 3 cooperate with each other in an implementation disclosed in the present application. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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

[0025] See attached Figure 1 and 2 This embodiment discloses a switch button with a non-Newtonian fluid column. The switch button design structure includes a base shell 1, a shaft 2 inserted into the base shell 1, and a striker 3 matched with the bottom end of the shaft 2, and uses the rheological properties of the non-Newtonian fluid 5 to achieve adaptive tactile feedback.

[0026] The key's core components are the base shell 1, the shaft 2, the impact rod 3, and the non-Newtonian fluid 5 filled in the variable chamber 4. The design principle, matching relationship, working principle, materials used, and function realization method of each component will be described in detail below.

[0027] In terms of specific structure, first, the base shell 1 is composed of a base 101 and an upper cover 102, which are combined in a detachable manner to form a mounting cavity 103 for accommodating the shaft rod. The inner bottom surface of the base 101 is designed with a bottom groove 104 that matches the impact rod, ensuring that during the key operation, the impact rod 3 can accurately contact the bottom groove 104 and achieve the required feedback action. The upper cover 102 part plays a role in protecting the internal structure of the key and guiding the shaft rod 2 at the same time.

[0028] In the above structure, the shaft rod 2 is partially located in the mounting cavity 103 of the base shell 1, and its bottom end is concave to form a columnar groove. The design of the columnar groove enables the impact rod 3 to slide along the axial direction when a pressing force is applied. The outer surface of the impact rod 3 and the inner wall of the columnar groove are designed to have an appropriate sliding fit tolerance to ensure the stability and response sensitivity of the impact rod 3 when pressed.

[0029] It should be understood that the impact rod 3 is connected to the shaft rod 2 by inserting into the columnar groove 201 to form a slidable piston structure. The bottom of the impact rod 3 is spherical, which reduces friction during sliding, avoids jamming, and improves the working reliability of the system.

[0030] In the above structure, the impact rod 3 cooperates with the columnar groove to form a variable chamber 4, and the variable chamber 4 contains a non-Newtonian fluid 5. The unique properties of the non-Newtonian fluid 5 cause its rheological properties to change when different shear forces or pressures are applied. Specifically, the non-Newtonian fluid 5 has a larger rheological property when slightly pressed, providing lower resistance; under greater pressing force, the rheological property is enhanced and the resistance is increased, thereby achieving feedback effects of different intensities. Through this design, the button can provide a variety of tactile feedback according to the different forces and speeds applied, adapting to the operating needs of different users.

[0031] In addition, when the impact rod 3 collides with the inner bottom surface of the base shell 1, corresponding sound feedback will be generated. Specifically, when pressed quickly, the non-Newtonian fluid 5 responds quickly and produces a crisp return sound; when pressed lightly, the fluid responds slowly and produces a softer, muffled sound. This sound feedback complements the tactile feedback, providing users with a richer operating experience and increasing the interactivity and intelligence of the buttons.

[0032] In order to realize the reset of the shaft 2, a reset spring (not shown in the figure) cooperating with the shaft 2 is arranged in the base shell 1. The reset spring provides a reverse force to ensure that the key can quickly return to its initial position after being pressed. The reset spring can be made of a high elastic alloy or fatigue-resistant spring steel to ensure its elastic recovery performance in long-term use. In addition, the size and elastic coefficient of the reset spring can be adjusted according to the specific application scenario to achieve the required key feedback force.

[0033] The upper part of the shaft 2 extends out of the base shell 1 and is connected to the keycap (not shown in the figure). The keycap is connected through the shaft 2 and can be designed into different shapes or materials according to user needs to optimize operating comfort and aesthetics. The design of the keycap should take into account the user's tactile experience, and materials with appropriate friction coefficients, such as ABS, PBT or silicone, are usually used to improve the feel and durability of the keys.

[0034] In some embodiments, the switch button is a magnetic axis structure, specifically, a magnetic block is arranged on the shaft 2, and a Hall sensor opposite to the magnetic block is arranged in the base shell 1. When the button is triggered by a signal for realizing the key, the switch button acts as a magnetic axis, and when it is pressed, the displacement of the magnetic block causes the Hall sensor to detect a change in the magnetic field, thereby outputting an electrical signal feedback.

[0035] In summary, this embodiment adopts non-Newtonian fluid as feedback medium, combines mechanical structure design and electrical signal output, and provides a switch button with high interactivity, comfort and diversified feedback. This design can not only provide differentiated tactile feedback according to different pressing force and speed, but also further enhance the user's operating experience through sound feedback and electrical signals, meeting the requirements of smart devices for high interactivity and accuracy. This button is widely used in devices that require high tactile feedback and intelligent recognition, such as smart homes, consumer electronics, industrial control and other fields.

[0036] 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 switch button with a non-Newtonian fluid column, characterized in that: The switch button comprises: a base shell, and a shaft rod inserted into the shell, wherein the bottom end of the shaft rod is concave to form a columnar groove, and a strike rod is inserted into the columnar groove from the bottom part to form a slidable piston structure, and a variable chamber formed by the strike rod and the columnar groove contains a non-Newtonian fluid, and the inner wall surface of the annular groove is provided with a groove, and the non-Newtonian fluid partially enters the groove when solidified, so that the non-Newtonian fluid forms a fixed position, and the strike rod strikes the bottom surface of the base shell; the columnar groove is also provided with a fixing structure for constraining the lowest downward position of the strike rod, so that the shaft rod is installed in the columnar groove and has a lower stop travel position.

2. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The base shell comprises a base and an upper cover, and the base and the upper cover are detachably connected to form an installation cavity for accommodating the shaft rod.

3. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The inner bottom surface of the base is concavely provided with a bottom groove matched with the impact rod.

4. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The bottom of the impact rod is spherical.

5. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The columnar groove can allow the shaft rod to be completely retracted therein.

6. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: A return spring matched with the shaft rod is arranged in the base shell.

7. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The shaft rod part extends out of the base shell and is connected and matched with the key cap of the individual part.

8. A switch button with a non-Newtonian fluid column as claimed in claim 1, characterized in that: The shaft rod is provided with a magnetic block, and correspondingly, a Hall sensor corresponding to the magnetic block is provided in the base shell.

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