Magnetic axis key with integrated base

Abstract

The utility model discloses a magnetic shaft key with an integrated base, and relates to the field of keys, the key comprises a base assembly and a shaft core assembly, a hollow cavity is formed in the base assembly, and an opening for the shaft core assembly to be installed and inserted is formed in the top of the base assembly; the shaft core assembly is pressed into the base through the opening and forms an elastic matching relation with the reset spring. The two symmetrical inner walls of the opening of the base assembly are each provided with three protruding guide blocks, the top end of each guide block is provided with a wedge-shaped guide inclined face, and the wedge-shaped guide inclined face of each guide block inclines towards the central axis of the opening and is used for guiding the enclosure bulkhead to generate elastic deformation in the inserting process of the shaft core assembly, so that assembly guiding is achieved. The key ensures complete functions, reduces production and assembly steps, and is more beneficial to industrial production and cost control.

Description

Technical Field

[0001] This application relates to the field of buttons, and in particular to a magnetic axis button with an integrated base. Background Technology

[0002] In the field of magnetic shaft buttons, existing technologies generally adopt a split-base structure design. This design breaks down the base into two independent components, which are then precisely snapped together to form a complete load-bearing structure. This construction method can meet the basic functional requirements of buttons, such as providing installation space for magnetic sensing elements, guiding the movement trajectory of the key, and ensuring stable transmission of electromagnetic signals. The split structure, through its modular design concept, achieves a balance between functional integration and production feasibility, thus becoming a widely used technical solution in the industry.

[0003] However, the modular base design suffers from significant technical drawbacks and cost bottlenecks in practical applications. From a manufacturing perspective, the modular structure requires each independent component to be injection molded using a dedicated mold, increasing mold development costs several times over compared to a single mold. For example, the parallel development and maintenance costs of two sets of molds are significantly higher than those of a single mold, and the extended mold debugging cycle reduces product iteration efficiency. During assembly, the modular components require manual operation for precise alignment and fixed assembly, which not only increases labor costs but also leads to fluctuations in product yield due to the instability of manual operation. More importantly, the existing interface design of the modular structure has inherent limitations. If a one-piece molding process is directly adopted, the base cannot form an assembly channel for the smooth insertion of the handle assembly. This structural contradiction makes it difficult to achieve overall optimization through simple modifications of traditional designs.

[0004] To address the aforementioned technical challenges, developing a novel integrated base structure has significant economic value and represents a technological breakthrough. Utility Model Content

[0005] The purpose of this application is to overcome at least one deficiency of the prior art and provide a magnetic shaft button with an integrated base. This button reduces production and assembly steps while ensuring full functionality, which is more conducive to industrial production and cost control.

[0006] To achieve the above objectives, this application discloses a magnetic shaft button with an integrated base. The button includes a base assembly and a shaft core assembly. The base assembly has a hollow cavity inside and an opening at the top for the shaft core assembly to be installed and inserted. The shaft core assembly is pressed into the base through the opening and forms an elastic engagement with a return spring.

[0007] Three protruding guide blocks are respectively provided on the two inner walls of the symmetrical opening of the base assembly. Each guide block has a wedge-shaped guide slope at its top. The wedge-shaped guide slope of each guide block is inclined toward the central axis of the opening, which is used to guide the surrounding wall to generate elastic deformation during the insertion of the shaft core assembly, so as to realize assembly guidance.

[0008] The shaft core assembly comprises an actuator, a shaft, and a surrounding wall; the actuator is used to connect to the keycap connection, the shaft extends vertically from the bottom end of the actuator, and the surrounding wall is set outside the shaft in a ring-shaped structure, the outer contour dimension of which is adapted to the inner wall of the base opening.

[0009] Two longitudinal guide grooves are symmetrically opened on the outer side of the enclosure. The bottom end of the guide groove is closed to form an upper travel limiting surface. An elastic fastening part is provided between the two guide grooves. The free end of the elastic fastening part extends outward to form a protruding snap-fit ​​structure.

[0010] The lower edge of the enclosure is an inverted wedge-shaped structure that matches the wedge-shaped guide slope of the guide block. The two work together to form a progressive guide path when the core assembly is pressed in.

[0011] Furthermore, an axial cavity is provided inside the shaft, and a cylindrical magnetic component is fixedly installed within the cavity. The axial position of the magnetic component is aligned with the detection area of ​​the external magnetic induction element. When the shaft is pressed downwards, the guide groove slides along the guide block and compresses the return spring. The magnetic component moves synchronously with the shaft to change the magnetic field distribution. When the pressure is released, the return spring pushes the shaft upwards until the bottom of the guide groove contacts the guide block to form an upper stop limit, and the magnetic component returns to its initial detection position. This structure limits the movement trajectory of the shaft through the rigid cooperation between the guide block and the guide groove, achieving high stability of the button structure and high-precision output of the trigger signal.

[0012] Furthermore, the opening of the base assembly is shaped like a square, and an arc-shaped protrusion is provided at the corner of the opening. The arc-shaped protrusion contacts and engages with the wall of the shaft core assembly to lock the dimensional gap between the opening and the wall.

[0013] During assembly, the enclosure of the shaft core assembly contacts the wedge-shaped guide surface of the guide block via an inverted wedge structure. Under axial pressure, the enclosure is compressed by the guide block, resulting in radial elastic deformation. This temporarily reduces the outer diameter of the enclosure to pass through the guide block area. Once the shaft core assembly is fully inserted into the base, the enclosure elastically returns to its original size, the guide block embeds into the guide groove, and the protruding locking structure of the elastic locking part forms a one-way limiting structure with the intermediate guide block, thereby permanently fixing the shaft core assembly to the base assembly. In this state, the shaft core assembly cannot be detached from the base by applying reverse force, ensuring assembly stability.

[0014] Compared with the prior art, this application has at least one of the following beneficial effects:

[0015] The integrated base structure eliminates the redundancy of molds in split designs: the base component is injection molded using a single mold, avoiding the need for multiple mold development for split structures, significantly reducing mold costs and debugging cycles, and improving production economy.

[0016] The self-guided assembly mechanism simplifies the assembly process: by using the progressive guiding fit between the wedge-shaped inclined surface of the guide block and the inverted wedge-shaped structure of the enclosure, the alignment is automatically completed through the elastic deformation of the enclosure when the shaft core is pressed in, without the need for manual precision adjustment, which greatly improves assembly efficiency and product consistency.

[0017] The permanent locking structure avoids the defects of the split interface: the irreversible snap-fit ​​between the elastic fastener and the guide block realizes the tool-free fixation of the shaft core and the base, avoiding the stability problems caused by the loose interface of the split base, while ensuring that the structure cannot be disassembled after assembly, thus enhancing the overall reliability.

[0018] Integrated cavity compatible with internal function integration: While maintaining the one-piece molding process, the hollow cavity of the base forms an assembly channel through the staggered layout of guide blocks and guide grooves, which solves the contradiction that the traditional one-piece base cannot accommodate the core component, and takes into account both structural strength and functional realization.

[0019] 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

[0020] 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:

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0022] Figure 2 This is a cross-sectional structural diagram of one embodiment disclosed in this application.

[0023] Figure 3 This is an exploded view of one embodiment disclosed in this application.

[0024] Figure 4 This is a schematic diagram of the structure of a base assembly according to an embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the structure of a shaft core assembly according to an embodiment of this application. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] See attached document Figures 1 to 5 This embodiment relates to a magnetic shaft button with an integrated base, belonging to the field of electronic device input control technology. Those skilled in the art know that traditional buttons mostly use elastic elements to achieve the reset function, and signal transmission is completed by pressing to trigger mechanical switches or micro switches. Their structural stability and signal accuracy are easily affected by external interference, and the assembly process is relatively complex, making it difficult to meet the demands of modern electronic devices for miniaturized, high-performance buttons. Therefore, this embodiment aims to provide an integrated base magnetic shaft button with stable structure, accurate trigger signal, and simple assembly, to overcome the shortcomings of the prior art.

[0031] The magnetic shaft button is composed of a base assembly 1 and a shaft core assembly 2 working together to achieve stable button assembly and accurate signal output.

[0032] Specifically, the base assembly 1, serving as the basic support structure, is made of engineering plastics with certain strength and toughness, such as an alloy of polycarbonate and ABS. This material is widely used in the manufacturing of electronic device housings and possesses good mechanical and processing properties. It forms a hollow cavity internally, with an opening 3 at the top for the insertion and installation of the shaft core assembly 2, providing space for its installation and movement. The shaft core assembly 2 is pressed into the base assembly 1 through this opening 3 and forms an elastic engagement with the return spring 4. The return spring 4 can be made of stainless steel, possessing good elasticity and durability to ensure that the shaft core assembly 2 can accurately return to its original position after being compressed.

[0033] In this embodiment, the opening of the base assembly is U-shaped, and both folds at the corners of the opening are provided with arc-shaped protrusions. These arc-shaped protrusions are not designed to reduce the sliding resistance of the shaft core assembly, but rather to compensate for the dimensional gaps after the base assembly and the shaft core assembly are fitted together.

[0034] To ensure that the spindle assembly 2 can be smoothly inserted into the opening 3 of the base assembly 1, the size of the surrounding wall 6 of the spindle assembly 2 must be slightly smaller than the size of the opening 3. However, this dimensional difference may cause the spindle assembly 2 to wobble slightly after assembly, affecting its sliding stability. Therefore, arc-shaped protrusions 11 are provided at the two folded surfaces at the corners of the opening 3. When the spindle assembly 2 is fully inserted into the base assembly 1, these arc-shaped protrusions 11 can contact the outer surface of the surrounding wall 6 of the spindle assembly 2, thereby filling the gap between the surrounding wall 6 and the inner wall of the opening 3. This makes the position of the spindle assembly 2 more stable within the base assembly 1, less prone to wobble, and thus improves the stability of the spindle assembly 2 during up-and-down sliding, ensuring the accuracy and reliability of button operation.

[0035] Furthermore, three protruding guide blocks 5 are respectively provided on the two symmetrical inner walls of the opening 3 of the base assembly 1. Each guide block 5 has a wedge-shaped guiding slope at its top, and the wedge-shaped guiding slope of each guide block 5 is inclined towards the central axis of the opening 3. During the insertion of the core assembly 2, the wedge-shaped guiding slope of the guide block can guide the surrounding wall 6 of the core assembly 2 to produce elastic deformation, thereby achieving assembly guidance and enabling the core assembly 2 to be smoothly inserted into the base assembly 1. This design reduces the assembly difficulty and improves the assembly efficiency through simple geometric fit, and does not require additional positioning auxiliary tools, which is in line with the development trend of miniaturization and integration of electronic devices.

[0036] Specifically, the spindle assembly 2 consists of an actuator 7, a shaft 8, and a surrounding wall 6. The actuator 7 is used to connect the keycap (not shown in the figure), and its material can be an engineering plastic with high strength and wear resistance. The shaft 8 extends vertically from the bottom end of the actuator 7. The surrounding wall 6, located outside the shaft 8, forms an annular structure, and its outer contour dimensions are adapted to the inner wall of the opening 3 in the base assembly 1, thereby ensuring that the spindle assembly 2 can be stably installed in the base assembly 1. The fit clearance between the two needs to ensure good coaxiality and straightness during the movement of the spindle assembly 2, thereby improving the consistency and stability of key operation.

[0037] To facilitate the engagement of the spindle assembly 2 and the base assembly 1, two longitudinal guide grooves 9 are symmetrically formed on the outer side of the enclosure 6. The bottom of the guide grooves 9 is closed to form an upper travel limiting surface, which can limit the upward travel of the spindle assembly 2 and prevent it from moving excessively upward and detaching from the base assembly 1. An elastic fastening part 10 is provided between the two guide grooves 9. The free end of the elastic fastening part 10 extends outward to form a protruding snap-fit ​​structure. After the spindle assembly 2 is fully inserted into the base, the protruding snap-fit ​​structure forms a one-way limiting structure with the guide block 5 located in the middle on the base assembly 1, thereby achieving stable fixation of the spindle assembly 2 and the base assembly 1 and ensuring the stability of the button during use.

[0038] The material of the elastic fastening part 10 is the same as that of the enclosure 6. It achieves the snap-fit ​​function by relying on the elastic deformation of the material itself. This design is innovative in the fixed connection of electronic device components. It avoids the assembly complexity and non-removability caused by traditional screw fixing or glue bonding, while improving the overall aesthetics and reliability of the product.

[0039] Furthermore, to facilitate assembly, the lower edge of the enclosure 6 has an inverted wedge shape, which matches the wedge-shaped guide slope of the guide block 5. Together, they form a progressive guide path for the core assembly 2 during insertion. During the insertion of the core assembly 2, the inverted wedge structure and the wedge-shaped guide slope interact, causing the enclosure 6 to undergo radial elastic deformation under axial pressure from the guide block 5. The outer diameter temporarily shrinks to pass through the area of ​​the guide block 5. After the core assembly 2 is fully inserted into the base, the enclosure 6 elastically returns to its original size, and the guide block 5 embeds into the guide groove 9, quickly completing the assembly.

[0040] Furthermore, based on the above structure, in a further structural description, a cavity is provided axially inside the shaft 8, and a cylindrical magnetic component is fixedly installed inside the cavity. The magnetic component can be a neodymium iron boron permanent magnet, which has high magnetic performance and good stability. As one of the permanent magnet materials with the highest magnetic performance currently available, neodymium iron boron permanent magnets occupy an important position in the application of magnetic sensors in electronic devices. Its high remanence and high coercivity characteristics can ensure that the magnetic component maintains a stable magnetic field strength during long-term use and is not easily demagnetized by external magnetic field interference. The axial position of the magnetic component is aligned with the detection area of ​​the external magnetic sensing element. When the shaft core is pressed downward, the guide groove slides along the guide block and compresses the compression spring 4. The magnetic component moves synchronously to change the magnetic field distribution. The external magnetic sensing element can detect the change in magnetic field, thereby realizing the output of the button trigger signal. The external magnetic sensing element can be a Hall sensor or a magnetoresistive sensor, etc. These elements are mature in the field of magnetic field detection in electronic devices, have the characteristics of high sensitivity and fast response, and can accurately convert magnetic field changes into electrical signals, thereby realizing the accurate transmission of button signals. When the pressure is released, the reset spring pushes the shaft core 8 upward until the bottom of the guide groove contacts the guide block 5 to form the upper stop limit. The magnetic component is reset to the initial detection position, ensuring the accuracy and stability of the button signal.

[0041] During assembly, the core assembly 2 is first aligned with the opening 3 of the base assembly 1. Axial pressure is then applied, causing the surrounding wall 6 of the core assembly 2 to contact the wedge-shaped guide surface of the guide block via an inverted wedge structure, resulting in elastic deformation. The outer diameter gradually decreases to smoothly pass through the area of ​​the guide block 5 until the core assembly 2 is fully inserted into the base assembly 1. At this point, the surrounding wall 6 elastically recovers, the guide block 5 embeds into the guide groove 9, and the protruding locking structure of the elastic locking part 10 forms a one-way limiting position with the middle guide block 5 at the upper stop, completing the stable fixation of the core assembly 2 and the base assembly 1. In this state, the core assembly 2 cannot be detached from the base assembly 1 by applying reverse force, ensuring assembly stability. The entire assembly process requires no complex tools or cumbersome procedures, reducing production costs and improving production efficiency, meeting the requirements of modern electronic equipment manufacturing for efficient and automated production.

[0042] It should be noted that the material selection, structural design, and working principle of each component mentioned in this embodiment are all described in detail based on well-known and existing technologies in the field of electronic device input control. For example, the selection and application of materials and components such as engineering plastics, stainless steel, neodymium iron boron permanent magnets, and Hall sensors are all well-known to those skilled in the art. For the parts that are not disclosed in detail and belong to well-known or existing technologies, those skilled in the art can make reasonable selections and applications based on their existing knowledge and experience to realize the actual production and application of the magnetic shaft button. At the same time, those skilled in the art should understand that several improvements and modifications can be made to this invention without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

[0043] 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 magnetic shaft key for an integrated base, characterized in that, The button comprises a base assembly and a shaft core assembly, wherein the base assembly is internally formed with a hollow cavity and is provided with an opening at the top for mounting and inserting the shaft core assembly; the shaft core assembly is pressed into the base and is in elastic cooperation with a return spring; Three protruding guide blocks are respectively arranged on the two symmetrical inner walls of the opening of the base assembly, and a wedge-shaped guide slope is arranged at the top end of each guide block; the wedge-shaped guide slopes of the guide blocks are inclined towards the central axis of the opening, and are used for guiding the elastic deformation of the surrounding wall during the insertion of the shaft core assembly, so as to realize assembly guidance; The shaft core assembly comprises an execution part, a shaft rod and a surrounding wall; the execution part is used for connecting a key cap, the shaft rod vertically extends from the bottom end of the execution part, and the surrounding wall is arranged outside the shaft rod and has a ring structure, the outer contour size of which is matched with the inner wall of the opening of the base; Two longitudinal guide grooves are symmetrically arranged on the outer side of the surrounding wall, the bottom end of the guide groove is closed to form an upward stroke limiting surface, and an elastic clamping part is arranged between the two guide grooves, the free end of the elastic clamping part extends outward to form a protruding clamping structure.

2. The magnetic shaft key of the one-piece base as defined in claim 1, wherein, The lower edge of the surrounding wall is a reverse wedge-shaped structure matched with the wedge-shaped guide slope of the guide block, and the two form a progressive guide path when the shaft core assembly is pressed in.

3. The magnetic shaft key of the one-piece pedestal as defined in claim 1, wherein, A cavity is arranged in the shaft rod along the axial direction, a cylindrical magnetic member is fixedly arranged in the cavity, and the axial position of the magnetic member is aligned with the detection area of the external magnetic induction element.

4. The magnetic shaft key of the one-piece pedestal as defined in claim 1, wherein, The opening of the base assembly is in the shape of a mouth, and an arc-shaped protrusion is arranged at the corner of the opening; the arc-shaped protrusion is in contact with the surrounding wall of the shaft core assembly, and is used for locking the size gap between the opening and the surrounding wall.

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