Silicone key structure with enhanced pressing feeling

Abstract

The utility model provides a kind of silicone key structure of enhancing press feeling, including silicone base and bottom conductive trigger part, its innovation is in that elastic support layer and buffer layer are arranged in silicone base inner layer, are integrally formed by wave-shaped connecting rib, form the composite feedback mechanism of " soft touch-hard trigger " by the embedded dish-shaped metal spring of bottom annular positioning boss;Elastic support layer provides initial resistance, buffer layer absorbs impact, and the peak height of wave-shaped connecting rib realizes the nonlinear feedback of press stroke;Metal spring center pre-pressing boss and conductive trigger part keep gap, and by elastic deformation to plastic deformation when pressing, produce crisp trigger feeling.The utility model is through material hardness gradient design, mechanical structure innovation and multidimensional detail optimization, solve the traditional silicone key rebound soft, touch stroke fuzzy etc. Problem, make press touch feeling close to the clear feedback of mechanical key, applicable to remote controller, intelligent household appliance etc.

Description

Technical Field

[0001] This utility model relates to the field of electronic device button technology, and in particular to a silicone button structure that enhances the tactile feel of pressing. Background Technology

[0002] Existing silicone buttons generally suffer from problems such as excessively long press travel, soft rebound, and vague tactile feedback. Traditional single-layer silicone structures are prone to elasticity loss due to material fatigue after long-term use, and a single hardness design makes it difficult to balance press comfort and trigger sensitivity. In addition, the connection stability between the button and the circuit board is insufficient, which can easily lead to poor contact or displacement deviation, further affecting the user experience.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a silicone button structure that enhances the pressing feel in order to solve the above problems. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a silicone button structure that enhances the tactile feel of pressing, achieving a balance between precise trigger travel and high elasticity feedback through multi-dimensional structural optimization.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a silicone button structure that enhances the pressing feel, comprising a silicone substrate and a conductive trigger portion disposed at the bottom of the silicone substrate. An elastic support layer and a buffer layer are sequentially disposed inside the silicone substrate from top to bottom. The elastic support layer and the buffer layer are integrally formed by a wave-shaped connecting rib. An annular positioning boss is provided at the bottom edge of the silicone substrate, and a metal spring is embedded inside the annular positioning boss. The metal spring is electrically connected to the conductive trigger portion.

[0006] The preferred technical solution is that the hardness of the silicone material used in the elastic support layer is greater than that of the silicone material used in the buffer layer.

[0007] The preferred technical solution is that the crest height of the corrugated connecting rib is 0.3-0.5mm.

[0008] The preferred technical solution is as follows: the metal spring is disc-shaped, and its central area is arched upward to form a pre-pressure protrusion, and the pre-pressure protrusion is in clearance fit with the bottom surface of the conductive trigger part.

[0009] The preferred technical solution is as follows: the bottom surface of the conductive trigger part is provided with a hemispherical contact, and the contact area between the hemispherical contact and the metal spring is plated with a silver alloy conductive layer.

[0010] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows:

[0011] This invention achieves comprehensive optimization of the pressing feel through a multi-layer composite structure design:

[0012] Elastic support layer and buffer layer: The layers are made of silicone with different hardness. The elastic support layer provides initial pressing resistance, and the buffer layer absorbs impact energy. Combined with the deformation characteristics of the wave-shaped connecting ribs, the pressing stroke presents a "soft first and tough later" feedback curve, which significantly improves the sense of touch.

[0013] Metal spring pre-compression structure: The pre-compression protrusion of the disc-shaped metal spring maintains a small gap with the conductive trigger part when not pressed. In the initial stage of pressing, the metal spring is in the elastic deformation stage, providing linear resistance. When the pressing depth exceeds a certain range, the metal spring undergoes plastic deformation, producing a crisp trigger feedback, realizing a dual tactile experience of "soft touch-hard trigger". Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the silicone button structure involved in this utility model. Detailed Implementation

[0015] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0016] Please see Figure 1 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example:

[0019] like Figure 1 As shown, according to the overall technical concept of this utility model, a silicone button structure for enhancing the pressing feel is provided, including a silicone substrate 1 and a conductive trigger part 2 disposed at the bottom of the silicone substrate 1. An elastic support layer 11 and a buffer layer 12 are sequentially disposed inside the silicone substrate 1 from top to bottom. The elastic support layer 11 and the buffer layer 12 are integrally formed by a wave-shaped connecting rib 13. An annular positioning boss 3 is provided at the bottom edge of the silicone substrate 1. A metal spring 4 is embedded in the inner side of the annular positioning boss 3. The metal spring 4 is electrically connected to the conductive trigger part 2.

[0020] like Figure 1 As shown, in an exemplary embodiment of this utility model, the silicone material used in the elastic support layer 11 has a higher hardness than the silicone material used in the buffer layer 12.

[0021] like Figure 1 As shown, in an exemplary embodiment of this utility model, the crest height of the corrugated connecting rib 13 is 0.3-0.5mm.

[0022] like Figure 1 As shown, in an exemplary embodiment of this utility model, the metal spring 4 is disc-shaped, with its central region arching upward to form a pre-pressure protrusion 41, which is in clearance fit with the bottom surface of the conductive trigger part 2.

[0023] like Figure 1 As shown, in an exemplary embodiment of this utility model, the bottom surface of the conductive trigger part 2 is provided with a hemispherical contact 21, and the contact area between the hemispherical contact 21 and the metal spring 4 is plated with a silver alloy conductive layer.

[0024] Therefore, this utility model has the following advantages:

[0025] This invention achieves comprehensive optimization of the pressing feel through a multi-layer composite structure design:

[0026] Elastic support layer and buffer layer: The layers are made of silicone with different hardness. The elastic support layer provides initial pressing resistance, and the buffer layer absorbs impact energy. Combined with the deformation characteristics of the wave-shaped connecting ribs, the pressing stroke presents a "soft first and tough later" feedback curve, which significantly improves the sense of touch.

[0027] Metal spring pre-compression structure: The pre-compression protrusion of the disc-shaped metal spring maintains a small gap with the conductive trigger part when not pressed. In the initial stage of pressing, the metal spring is in the elastic deformation stage, providing linear resistance. When the pressing depth exceeds a certain range, the metal spring undergoes plastic deformation, producing a crisp trigger feedback, realizing a dual tactile experience of "soft touch-hard trigger".

[0028] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A silicone button structure for enhancing tactile feedback, comprising a silicone substrate and a conductive trigger portion disposed at the bottom of the silicone substrate, characterized in that: The silicone substrate has an elastic support layer and a buffer layer arranged sequentially from top to bottom inside. The elastic support layer and the buffer layer are integrally formed by a wave-shaped connecting rib. The bottom edge of the silicone substrate has an annular positioning boss. A metal spring is embedded in the inner side of the annular positioning boss. The metal spring is electrically connected to the conductive trigger part.

2. The silicone key structure with enhanced press feeling according to claim 1, characterized in that: The silicone material used in the elastic support layer has a higher hardness than the silicone material used in the buffer layer.

3. The silicone key structure with enhanced press feeling according to claim 1, characterized in that: The crest height of the wavy connecting rib is 0.3-0.5mm.

4. The silicone key structure with enhanced press feeling according to claim 1, characterized in that: The metal spring is disc-shaped, with its central area arched upward to form a pre-pressure protrusion, which is in clearance fit with the bottom surface of the conductive trigger part.

5. The silicone key structure with enhanced press feeling according to claim 1, wherein: The bottom surface of the conductive trigger part is provided with a hemispherical contact, and the contact area between the hemispherical contact and the metal spring is plated with a silver alloy conductive layer.

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