Inductive shaft and keyboard
By completely housing the inductor shaft within the button's housing cavity, the problem of loosening and detachment caused by exposed inductor shafts is solved, improving stability and lifespan, and enhancing the user experience.
Patent Information
- Application Number
- CN202521896687.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-04
AI Technical Summary
The inductor core of existing inductor shafts is prone to loosening or falling off due to exposure, affecting performance and lifespan.
An inductor shaft structure was designed, in which the inductor shaft core is completely housed within the button's receiving cavity. The receiving cavity encloses and constrains the inductor, restricting its movement and preventing external interference and vibration.
It significantly improves the positioning stability of the inductor shaft, prevents loosening and detachment, extends service life, and enhances the user experience.
Smart Images

Figure CN224682986U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of keyboard technology, and in particular to an inductive shaft and a keyboard. Background Technology
[0002] An inductive shaft is a type of push-button switch that triggers a change in inductance by displacing its internal inductor core relative to the inductor coil when pressed. Inductive shafts are increasingly favored by users due to their advantages such as contactless triggering, fast response speed, and long lifespan. However, in existing technologies, the inventors, through market research and reviewing user feedback, discovered that the top of the inductor core in current inductive shafts is inserted into the button, while the bottom of the inductor core is exposed. Therefore, after prolonged use, the inductor core is prone to loosening or even falling out, which affects the performance and lifespan of the inductive shaft. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an inductor shaft.
[0004] This invention also proposes a keyboard having the inductor shaft.
[0005] An inductor shaft according to a first aspect of the present invention includes a housing, a button, a spring, and an inductor shaft core. The housing has a cavity, and the top of the housing has a clearance hole communicating with the cavity. The button is slidably disposed through the clearance hole. The button has a receiving cavity. The spring is disposed between the bottom of the cavity and the button. The inductor shaft core is disposed in the receiving cavity.
[0006] An inductor shaft according to an embodiment of the present invention has at least the following beneficial effects: Through the above structure, the accommodating cavity provides a protective enclosure for the inductor shaft, overcoming the problem in existing technologies where the exposed shaft is susceptible to loosening or detachment due to external interference or vibration. Furthermore, by completely enclosing the inductor shaft within the button's accommodating cavity, the positioning stability of the inductor shaft is significantly improved.
[0007] According to some embodiments of the present invention, the receiving cavity is located at the bottom of the button.
[0008] According to some embodiments of the present invention, the button includes at least two components connected in sequence, wherein one of the components is provided with the receiving cavity, or at least two of the components form the receiving cavity.
[0009] According to some embodiments of the present invention, the components are configured as two and arranged vertically. The component located on the lower side has an installation cavity with an upward opening, and the component located on the upper side has an abutment portion. The abutment portion is inserted into the installation cavity through the opening, and the abutment portion, the bottom wall of the installation cavity, and the side wall of the installation cavity form the receiving cavity.
[0010] According to some embodiments of the present invention, the two components are detachably connected.
[0011] According to some embodiments of the present invention, the component located on the upper side is provided with a groove, the bottom of the groove is provided with the abutment part, one of the two components is provided with a post, and the other is provided with a hole. The component located on the upper side is sleeved on the component located on the lower side through the groove, and the post is inserted into the hole.
[0012] According to some embodiments of the present invention, the two components are integrally connected.
[0013] According to some embodiments of the present invention, the bottom of the housing is provided with a downwardly extending extension cylinder, the inner cavity of the extension cylinder is connected to the chamber, wherein when the button is pressed to move it downward, the inductor shaft core can at least partially move downward within the inner cavity of the extension cylinder.
[0014] According to some embodiments of the present invention, the bottom of the button is provided with a collision part, wherein when the button is pressed and moved down, the collision part can collide with the inner cavity bottom wall of the extension cylinder to produce a collision sound.
[0015] The keyboard according to a second aspect of the present invention includes an inductive switch as described above.
[0016] The keyboard according to the present invention has at least the following beneficial effects: the above structure can overcome the problem in the prior art that the exposed core part of the switch is easily subject to external interference or vibration, which can lead to loosening or falling off.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural diagram of an embodiment of the inductor shaft of this utility model; Figure 2 for Figure 1 A cross-sectional view of the inductor shaft shown; Figure 3 for Figure 1 A partial exploded view of the inductor axis shown; Figure 4 for Figure 3 An exploded view of the button shown.
[0019] Figure label: Housing 100, top cover 110, clearance hole 111, base 120, extension tube 121, guide tube 122; Button 200, component 210, mounting cavity 211, abutting part 212, collision part 213, groove 214, insertion post 215, insertion hole 216; Spring 300; Inductor shaft core 400; Chamber S1, accommodating chamber S2. Detailed Implementation
[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0021] In the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.
[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.
[0023] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0024] Reference Figures 1 to 4An embodiment of this utility model provides an inductor shaft, which includes a housing 100, a button 200, a spring 300, and an inductor shaft core 400.
[0025] The housing 100 has a chamber S1, and the top of the housing 100 has a clearance hole 111 communicating with the chamber S1. The button 200 is slidably inserted through the clearance hole 111. The button 200 has a receiving cavity S2. A spring 300 is located between the bottom of the chamber S1 and the button 200. The spring 300 can drive the pressed button 200 to move upward and reset. The inductor shaft 400 is located in the receiving cavity S2. The inductor shaft 400 is a metal rod, specifically an aluminum rod.
[0026] Through the above structure, the accommodating cavity S2 provides a wrapping constraint for the inductor shaft core 400, which overcomes the problem in the prior art where the exposed shaft core is easily loosened or detached due to external interference or vibration. Furthermore, by completely housing the inductor shaft core 400 within the accommodating cavity S2 of the button 200, the positioning stability of the inductor shaft core 400 can be significantly improved.
[0027] In this embodiment, the housing 100 includes a connected upper cover 110 and a base 120, which together form the aforementioned cavity S1. The upper cover 110 is provided with the aforementioned clearance hole 111.
[0028] In this embodiment, the receiving cavity S2 is located at the bottom of the button 200. Specifically, refer to... Figures 2 to 4 The button 200 includes two connected components 210, arranged vertically. The lower component 210 has an upward-facing mounting cavity 211, and the upper component 210 has an abutment portion 212. The abutment portion 212 is inserted into the mounting cavity 211 through the opening. The abutment portion 212, the bottom wall of the mounting cavity 211, and the side wall of the mounting cavity 211 form the aforementioned receiving cavity S2. When the inductor shaft core 400 is located in the receiving cavity S2, the side wall of the mounting cavity 211 restricts the horizontal movement of the inductor shaft core 400, while the abutment portion 212 and the bottom wall of the mounting cavity 211 restrict the vertical movement of the inductor shaft core 400.
[0029] It is understood that the abutment part 212, the bottom wall of the mounting cavity 211, and the side wall of the mounting cavity 211 form the aforementioned accommodating cavity S2, that is, the two components 210 form the accommodating cavity S2.
[0030] In some embodiments, the accommodating cavity S2 is only provided in the lower component 210, and the accommodating cavity S2 cooperates with the inductor shaft core 400.
[0031] In some embodiments, the two components 210 are arranged symmetrically from left to right, and the two components 210 are connected to form a receiving cavity S2 that mates with the inductor core 400.
[0032] In some embodiments, the button 200 includes only one component 210, which has a receiving cavity S2 that mates with the inductor shaft core 400.
[0033] In this embodiment, refer to Figure 3 and Figure 4 The two components 210 are detachably connected. Specifically, the upper component 210 is provided with a groove 214, and the bottom of the groove 214 is provided with the aforementioned abutment part 212. The upper component 210 is provided with a post 215, and the lower component 210 is provided with a hole 216. The upper component 210 is fitted onto the lower component 210 through the groove 214, and the post 215 is inserted into the hole 216.
[0034] In some embodiments, the insertion hole 216 is provided on the upper part of the component 210, and the insertion post 215 is provided on the lower part of the component 210.
[0035] In some embodiments, the two components 210 are detachably connected via a snap-fit hole structure.
[0036] In some embodiments, the two components 210 can be connected as a single unit by means of riveting or the like.
[0037] In this embodiment, refer to Figure 1 and Figure 2 The base 120 has a downwardly extending extension cylinder 121 at its bottom. The inner cavity of the extension cylinder 121 is connected to the chamber S1. When the button 200 is pressed and moved downward, the inductor shaft 400 can at least partially move downward within the inner cavity of the extension cylinder 121.
[0038] Understandably, when the inductor shaft of this application is mounted on a keyboard, the inductor coil on the keyboard circuit board can be sleeved on the outside of the extension tube 121. Therefore, when the inductor shaft core 400 moves at least partially within the inner cavity of the extension tube 121, it can induce a change in inductance, thereby triggering a signal. Furthermore, compared to the conventional inductor shaft opening design (where the base 120 of a conventional inductor shaft has a through hole for the inductor shaft core 400 to extend from), the design of the extension tube 121 can prevent external debris (such as dust) from entering through the through hole and contaminating the cavity S1.
[0039] In this embodiment, refer to Figure 2 The bottom of the component 210 located on the lower side is provided with a collision part 213. When the button 200 is pressed and moved down, the collision part 213 can collide with the bottom wall of the inner cavity of the extension cylinder 121 to produce a collision sound, so as to provide the user with sound feedback and improve the user experience.
[0040] In this embodiment, refer to Figure 2 and Figure 3The base 120 has a guide cylinder portion 122 located in the chamber S1. The inner cavity of the guide cylinder portion 122 connects the chamber S1 and the inner cavity of the extension cylinder portion 121. The lower component 210 is slidably inserted into the inner cavity of the guide cylinder portion 122. Under the action of the guide cylinder portion 122, the button 200 can move up and down more accurately.
[0041] This invention also proposes a keyboard that includes the aforementioned inductive shaft. This structure overcomes the problem in the prior art where the exposed shaft core is easily susceptible to external interference or vibration, leading to loosening or detachment.
[0042] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.
Claims
1. An inductor shaft, characterized in that: include The housing (100) has a chamber (S1), and the top of the housing (100) has a clearance hole (111) communicating with the chamber (S1). A button (200) is slidably inserted through the clearance hole (111), and a receiving cavity (S2) is provided inside the button (200). A spring (300) is disposed between the bottom of the chamber (S1) and the button (200); An inductor shaft (400) is disposed in the accommodating cavity (S2).
2. An inductor shaft according to claim 1, characterized in that: The accommodating cavity (S2) is located at the bottom of the button (200).
3. An inductor shaft according to claim 1 or 2, characterized in that: The button (200) includes at least two components (210) connected in sequence, wherein, One of the components (210) is provided with the receiving cavity (S2). Alternatively, at least two of the components (210) may form the accommodating cavity (S2).
4. An inductor shaft according to claim 3, characterized in that: The component (210) is configured as two and arranged vertically. The component (210) located on the lower side has an installation cavity (211) with the opening facing upwards, and the component (210) located on the upper side has an abutment part (212). The abutment part (212) is inserted into the installation cavity (211) through the opening. The abutment part (212), the bottom wall of the installation cavity (211), and the side wall of the installation cavity (211) form the receiving cavity (S2).
5. An inductor shaft according to claim 4, characterized in that: The two components (210) are detachably connected.
6. An inductor shaft according to claim 5, characterized in that: The upper component (210) is provided with a groove (214), and the bottom of the groove (214) is provided with the abutment part (212). One of the two components (210) is provided with a post (215), and the other is provided with a hole (216). The upper component (210) is sleeved on the lower component (210) through the groove (214), and the post (215) is inserted into the hole (216).
7. An inductor shaft according to claim 4, characterized in that: The two components (210) are connected integrally.
8. An inductor shaft according to claim 2, characterized in that: The bottom of the housing (100) is provided with a downwardly extending extension cylinder (121), the inner cavity of which communicates with the chamber (S1), wherein, When the button (200) is pressed down, the inductor core (400) is at least partially able to move down within the cavity of the extension tube (121).
9. An inductor shaft according to claim 8, characterized in that: The bottom of the button (200) is provided with a collision part (213), wherein, When the button (200) is pressed down, the collision part (213) can collide with the inner wall of the extension tube part (121) to produce a collision sound.
10. A keyboard, characterized in that: Including an inductor shaft as described in any one of claims 1-9.