A key for reducing spring working noise

Abstract

This application belongs to the field of mechanical button technology, specifically relating to a button that reduces spring operating noise. The button includes an axially movable shaft, a spring providing rebound force, and a base for housing and guiding. The shaft is slidably disposed within the base, and the spring is housed within the base and located between the shaft and the inner bottom surface of the base. The spring is compressed when the shaft is pressed down and drives the shaft to return to its original position after release. The inner bottom surface of the base has a spring positioning groove adapted to the lower end contour of the spring for housing and positioning the bottom end of the spring. This button, by redesigning the fit between the spring and the contact component, employing a partial contact structure at the spring end to reduce the friction area, and setting a specific collision structure to improve the keystroke sound, can significantly reduce frictional vibration noise and obtain a crisper striking sound. This results in a cleaner, more consistent, and higher-quality sound during operation, improving the overall product quality and user experience.

Description

Technical Field

[0001] This application belongs to the field of mechanical button technology, specifically relating to a button that reduces spring operating noise. Background Technology

[0002] In the design and manufacturing of mechanical buttons, springs, as core elastic elements, are widely used in various shaft structures to realize the pressing and rebound functions of buttons. In current common mechanical button structures, the spring is usually placed at the bottom of the base, with its two ends forming a large area of ​​planar contact with the bottom of the shaft and the bottom surface of the base, respectively. While this design ensures the stability of the spring to a certain extent, it exposes obvious noise problems during dynamic operation.

[0003] Specifically, during the pressing or rebounding of a button, in addition to axial compression and recovery, the spring also experiences slight radial displacement due to uneven force or structural gaps. Because the contact area between the two ends of the spring and the bottom of the shaft and the inner bottom surface of the base is relatively large, this radial movement causes significant friction between the spring's metal surface and the mating parts, inducing high-frequency vibration. This vibration, propagating through the air, forms the so-called "spring sound," manifesting as a buzzing sound or metallic friction noise. Furthermore, the large-area planar collision between the bottom of the shaft and the bottom surface of the housing makes it difficult to produce a crisp striking sound. These problems not only affect the user experience but also cause inconsistent sound quality and a lack of sophistication when multiple buttons are operating simultaneously. The root cause lies in the fact that the existing structure does not effectively guide or restrict the radial movement of the spring, and the contact interface design does not optimize for friction noise and impact acoustic characteristics.

[0004] To address the aforementioned issues of spring noise and poor click sound quality, developing a structure that can effectively optimize the acoustic characteristics of buttons is of great significance. Utility Model Content

[0005] The purpose of this application is to overcome at least one deficiency of the prior art and provide a button that reduces spring operating noise. This button, by redesigning the fit between the spring and the contact component, employing a partial contact structure at the spring end to reduce the friction area, and setting a specific collision structure to improve the keystroke sound, can significantly reduce frictional vibration noise and obtain a crisper striking sound. This results in a cleaner, more consistent, and higher-quality sound during operation, improving the overall product quality and user experience.

[0006] To achieve the above objectives, this application discloses a button for reducing spring operating noise, the button comprising an axially movable shaft, a spring providing a restoring force, and a base for receiving and guiding.

[0007] The shaft is slidably disposed inside the base, and the spring is housed inside the base and located between the shaft and the inner bottom surface of the base. The spring is compressed when the shaft is pressed down and drives the shaft to reset after being released. The base has a spring positioning groove on its inner bottom surface that matches the contour of the lower end of the spring, which is used to accommodate and position the bottom end of the spring. The base also has several lower contact protrusions on its inner bottom surface, which are distributed at the lower stop point of the shaft core's movement path; the shaft core has corresponding upper contact protrusions on the end face that contacts the upper end of the spring.

[0008] Furthermore, the upper contact protrusion and the lower contact protrusion are one or a combination of discrete protrusions, ribs, or bumps.

[0009] Through the above combined design, the lower end of the spring achieves precise radial positioning through the positioning groove, avoiding lateral displacement during operation; while the upper end forms partial line or point contact with the shaft core through the upper contact protrusion. When the button is pressed, the bottom of the shaft core collides with the lower contact protrusion in the base. This point or line contact method can produce a crisper striking sound; at the same time, the limited contact between the upper end of the spring and the upper contact protrusion significantly reduces the friction area.

[0010] This composite contact design achieves multiple acoustic optimizations: the collision between the lower contact protrusion and the spindle core provides a crisp click sound; the upper contact protrusion reduces the frictional contact area at the top of the spring, effectively suppressing frictional noise; and the positioning groove ensures the stability of the spring's operation. This design not only eliminates spring operating noise but also provides superior click acoustic characteristics, ensuring highly consistent acoustic feedback from all buttons during operation, significantly improving the product's perceived quality and user experience. This structural modification can be implemented without complex manufacturing processes, demonstrating excellent industrial applicability.

[0011] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0012] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings: Figure 1 This is an exploded view of one embodiment disclosed in this application.

[0013] Figure 2 This is a schematic diagram of the base structure in one embodiment of the present application.

[0014] Figure 3This is a schematic diagram of the base from another perspective in one of the initial draft examples disclosed in this application.

[0015] Figure 4 This is a schematic diagram of the shaft structure in one embodiment of the present application.

[0016] Figure 5 This is a schematic diagram of the structure of the shaft and spring in a coordinated state in one embodiment of this application. Detailed Implementation

[0017] The present disclosure will now be described 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 many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to 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 further additional embodiments.

[0018] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0019] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0021] See Figure 1 This is an exploded view of the structure of a button for reducing spring operating noise according to an embodiment of this application. The button mainly includes a shaft core 10, a spring 20, and a base 30.

[0022] The base 30 is a hollow cylindrical structure with a receiving cavity 31 extending from top to bottom inside. The cross-sectional shape of the receiving cavity 31 is preferably non-circular, used to circumferentially limit and guide the shaft core 10.

[0023] The shaft core 10 is slidably disposed inside the receiving cavity 31 of the base 30.

[0024] Combination Figure 2 and Figure 3 The diagram illustrates the structure of the base 30. A lower spring receiving groove 33 is provided on the inner bottom surface 32 of the receiving cavity 31 of the base 30 to receive and position the lower end of the spring 20. A lower contact protrusion 34 is provided on the inner bottom surface 32 and around the lower spring receiving groove 33.

[0025] In this embodiment, as shown in the accompanying drawings, the lower contact protrusion 34 is a cross-shaped rib. The top surface of this cross-shaped rib together forms the lower stop contact plane for the movement of the shaft core 10.

[0026] See Figure 4 The diagram illustrates the structure of the shaft core 10. An upper contact protrusion 12 is provided on the contact surface between the shaft core 10 and the spring 20.

[0027] In this embodiment, as shown in the accompanying drawings, the upper contact protrusion 12 consists of multiple ribs arranged in a ring. These ribs are arranged concentrically around the upper receiving groove 11 of the spring.

[0028] Figure 5 The fit between the shaft core 10 and the spring 20 is shown. During assembly, the spring 20 is housed inside the base 30, with its lower end located in the lower spring receiving groove 33, and its upper end in contact with the upper contact protrusion 12 of the shaft core 10.

[0029] The working process of button 100 in this embodiment is as follows: When the shaft core 10 is pressed down to the lower limit of its stroke, the upper contact protrusion 12 at its bottom contacts and collides with the lower contact protrusion 34 on the inner bottom surface 32 of the base.

[0030] By designing the contact interface with a combination of multiple ring-shaped ribs and cross-shaped ribs, continuous large-area contact is transformed into discrete, localized line contact. This structure effectively reduces the collision contact area and alters the acoustic characteristics during collision. When the pressure is released, the spring 20 drives the shaft 10 to reset.

[0031] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A button for reducing spring operating noise, characterized in that, The button includes an axially movable shaft, a spring that provides a restoring force, and a base for housing and guiding. The shaft is slidably disposed inside the base, and the spring is housed inside the base and located between the shaft and the inner bottom surface of the base. The spring is compressed when the shaft is pressed down and drives the shaft to reset after being released. The base also has several lower contact protrusions on its inner bottom surface, which are distributed at the lower stop point of the shaft core's movement path; the shaft core has corresponding upper contact protrusions on the end face that contacts the upper end of the spring.

2. A button for reducing spring operating noise as described in claim 1, characterized in that, The upper contact protrusion and the lower contact protrusion are one or a combination of discrete protrusions, ribs or bumps.

3. A button for reducing spring operating noise as described in claim 1, characterized in that, The base has a spring positioning groove on its inner bottom surface that matches the contour of the lower end of the spring, which is used to accommodate and position the bottom end of the spring.

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