Microswitch based on magnetic induction

Abstract

The utility model discloses a microswitch based on magnetic induction, and relates to the technical field of electronic switchs.The microswitch comprises a base, an elastic piece installation base, a movable piece, a transmission part, a magnetic part, a magnetic induction component and a circuit board, the base is a main body supporting structure of the switch, and the elastic piece installation base is arranged on the upper portion of the base; the elastic sheet mounting seat is used for fixing the tail end of the movable sheet; the movable sheet has reset elasticity, the tail end of the movable sheet is fixed on the elastic sheet mounting seat, and the head end of the movable sheet is provided with a magnetic part; and at least one pin is arranged at the lower part of the base and is used for inserting and installing the microswitch to an external circuit board or equipment. The microswitch can adapt to different devices, realizes quick plugging replacement, and remarkably improves the universality and the production efficiency. Meanwhile, the integrated design can reduce the dependence on an external PCB, thereby reducing the manufacturing cost, and improving the stability and environment adaptability of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic switches, in particular to a magnetic induction-based micro switch suitable for electronic devices, automation control systems, household appliances and other fields. BACKGROUND

[0002] As a new technology, magnetic induction micro switches, although not widely used at present, have unique principles and potential advantages, making them an important alternative to traditional micro switches. Unlike traditional micro switches that rely on mechanical contact triggering, magnetic induction micro switches trigger signals through magnetic induction. This non-contact working method theoretically greatly improves the service life and avoids mechanical wear and contact failure. In addition, the accuracy and response speed of magnetic induction technology also make it highly competitive in applications that require high precision and reliability.

[0003] However, most current magnetic induction micro switches use a split structure, i.e., the resettable magnetic block and the Hall element for sensing magnetic field strength are designed separately. The Hall element and its supporting circuit are integrated on an external PCB board. This design can achieve basic magnetic induction in terms of function, but has obvious limitations in actual application. First, different devices have different layout, circuit design and functional requirements for PCB boards, which requires a specially designed PCB board for each device. This not only increases design and manufacturing costs, but also prolongs the product development cycle. Second, the split design cannot achieve modular plug-in replacement, limiting the versatility of magnetic induction micro switches, especially in scenarios that require quick replacement or upgrading, the existing design is difficult to meet the needs of flexible applications. In addition, the external PCB board needs to be precisely aligned during assembly, increasing the difficulty of assembly and also being easily disturbed by the external environment, affecting the stability and reliability of the switch.

[0004] The root cause of these problems lies in the split design of the existing magnetic induction micro switch, which fails to fully consider the needs of modularization and standardization. Especially in the current background of diversification and rapid iteration of electronic devices, this design method is not flexible enough to meet the market's comprehensive requirements for efficient production, low cost and high reliability.

[0005] Therefore, it is of great significance to develop a modular design of magnetic induction micro switch. CONTENT OF THE INVENTION

[0006] The purpose of the present application is to at least overcome one of the deficiencies in the prior art, and provide a micro switch based on magnetic induction, which can be adapted to different devices, realize quick plug-in replacement, and significantly improve the versatility and production efficiency. At the same time, the integrated design can reduce the dependence on external PCB, thereby reducing the manufacturing cost and improving the stability and environmental adaptability of the product.

[0007] To achieve the above-mentioned purpose, the present application discloses a micro switch based on magnetic induction, which comprises a base, a spring mounting seat, a movable piece, a transmission part, a magnetic part, a magnetic induction component and a circuit board.

[0008] Among them, the base is the main support structure of the switch, and the upper part is provided with a spring mounting seat for fixing the tail end of the movable piece.

[0009] The movable piece has a reset spring, the tail end is fixed on the spring mounting seat, and the head end is provided with a magnetic part.

[0010] The lower part of the base is provided with at least one pin for inserting and mounting the micro switch to the external circuit board or device.

[0011] The inside or bottom of the base is provided with a circuit board, and the magnetic induction component is installed on the circuit board, and the magnetic induction component is arranged opposite to the magnetic part, for sensing the change of magnetic field intensity generated by the magnetic part.

[0012] The magnetic induction component is electrically connected with the output circuit on the circuit board, and the output circuit is used for transmitting the signal sensed by the magnetic induction component to the external device.

[0013] The transmission part is located above the movable piece, used for receiving the pushing force of the external mechanism or component, and transmitting the force to the movable piece, so that the head end of the movable piece approaches the base. When the transmission part is pushed by the external mechanism, the movable piece drives the magnetic part to approach the magnetic induction component, and the magnetic induction component senses the change of magnetic field intensity and outputs the corresponding electric signal, thereby realizing the triggering of the switch.

[0014] The base is also provided with a limiting frame, which cooperates with the head end of the movable piece, for limiting the upward stroke of the movable piece to prevent the movable piece from moving excessively.

[0015] Further, the magnetic induction component is a Hall device, a tunnel magnetoresistance device or other component capable of sensing the change of magnetic field intensity and converting it into an electric signal.

[0016] Further, the micro switch based on magnetic induction further comprises an outer protective shell matched with the base, and the outer protective shell and the base jointly form a closed cavity for protecting the internal structure from the external environment, and the outer protective shell is provided with an opening, and the transmission part is exposed through the opening to be connected with the external mechanism.

[0017] Further, the base is made of high-strength insulating material, such as engineering plastic or ceramic material, to ensure its mechanical strength and electrical insulation performance.

[0018] Further, the spring mounting seat is integrally formed with the base by injection molding or mechanical processing, and the shape and size of the spring mounting seat are matched with the tail end of the movable piece to ensure stable fixation of the movable piece.

[0019] Further, the tail end of the movable piece is connected to the spring mounting seat by riveting, welding or clamping, and the movable piece is made of metal material with high elastic modulus, such as phosphor bronze or stainless steel, to ensure its quick reset after being stressed. Preferably, the movable piece is provided with an elastic arch-shaped section.

[0020] Further, the magnetic part is fixed to the movable piece by adhesion, embedding or welding, and the magnetic part is made of permanent magnet material, such as neodymium iron boron or ferrite, to generate a stable magnetic field.

[0021] Further, the pin is connected to the base by injection molding or welding, and the shape and size of the pin are matched with the plug-in interface of the external circuit board or device to realize quick installation and electrical connection of the switch.

[0022] Further, the circuit board is installed on the base by screw fixation or buckle connection.

[0023] Further, the magnetic sensing component is fixed to the circuit board by surface mounting or through-hole insertion, and the position of the magnetic sensing component corresponds to the movement trajectory of the magnetic part to ensure that the magnetic part can effectively change the magnetic field strength sensed by the magnetic sensing component during movement.

[0024] Further, the transmission part is connected to the movable piece by sliding connection or hinging, and the outer end of the transmission part is exposed through the opening in the outer protective shell for connection with external mechanisms.

[0025] Further, the limiting frame is connected to the base by injection molding or fastener fixation, and the shape and position of the limiting frame are matched with the head end of the movable piece to limit the upward stroke of the movable piece and prevent excessive movement of the movable piece during reset.

[0026] Further, the circuit board is provided with at least one output end, and the output end is connected to the pin by welding or plug-in to transmit the trigger signal through the pin. Preferably, the circuit board is also provided with a filter circuit or signal conditioning circuit to process the signal output by the magnetic sensing component to improve the stability and anti-interference ability of the signal.

[0027] Further, the circuit board is also provided with a power input end connected with the pin, and the power input end is used to provide working voltage for the magnetic induction component and other electronic components on the circuit board. The power input end is connected to the magnetic induction component and other circuit components through the wiring on the circuit board. Preferably, the circuit board is also provided with a grounding end, which is used to connect the electrical system of the circuit board with the grounding system of the external device, so as to improve the anti-interference ability and safety of the circuit.

[0028] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0029] 1. Modular design improves versatility and production efficiency: The present application integrates the magnetic induction component and the circuit board into the base, and uses standardized pins for quick plug-in replacement, so that the magnetic induction micro switch can be adapted to different devices. This modular design not only improves the versatility of the product, but also significantly simplifies the assembly and maintenance process, thereby improving the production efficiency.

[0030] 2. Integrated structure reduces manufacturing cost and enhances stability: The circuit board is integrated into the base, without relying on external PCB board, which not only reduces the design and manufacturing cost, but also effectively reduces the instability caused by external interference and assembly errors.

[0031] The above listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] The specific embodiments will be better understood after reading the following detailed description in conjunction with the accompanying drawings, in which the positions, sizes, and ranges of the structures shown in the drawings are sometimes not representative of the actual positions, sizes, and ranges. In the drawings:

[0033] Figure 1 is a structural schematic diagram of an embodiment to be applied for disclosure.

[0034] Figure 2 is a structural schematic diagram of an embodiment of the present application after removing the outer protective shell.

[0035] Figure 3 is a structural schematic diagram of an embodiment of the present application after removing the outer protective shell from another perspective.

[0036] Figure 4 is an exploded view of a structural schematic diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0037] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood, however, that the present disclosure can be presented in many different forms 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 to fully inform those skilled in the art of the scope of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0038] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the dimensions of some features can be distorted for the sake of clarity.

[0039] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.

[0040] The singular forms "a", "said" and "the" used in the specification, unless clearly indicated otherwise, include plural forms. The language "includes", "comprises" and "contains" used in the specification means the presence of the stated feature, but does not exclude the presence of one or more other features. The language "and / or" used in the specification includes any and all combinations of one or more of the associated listed items. Embodiments

[0041] The present embodiment discloses an exemplary structure of a microswitch based on magnetic induction. Referring to the accompanying drawings, Figures 1 to 4 In terms of specific structure, the main structure of the microswitch includes a base 1, a spring mounting seat 2, a movable piece 3, a transmission part 4, a magnetic part 5, a magnetic induction component 6, and a circuit board 7.

[0042] In the present embodiment, the base 1 serves as the main support structure of the switch and is made of high-strength insulating material, such as engineering plastic or ceramic material, to ensure its mechanical strength and electrical insulation performance.

[0043] The upper part of the base 1 is provided with a spring mounting seat 2, which is formed in an integral structure with the base 1 by integral injection molding or mechanical processing, and its shape and size are matched with the tail end of the movable piece 3 to ensure that the movable piece 3 can be stably fixed.

[0044] The tail end of the movable piece 3 is connected with the elastic piece mounting seat 2 by riveting, welding or clamping, the movable piece 3 is made of metal material with high elastic modulus, such as phosphor bronze or stainless steel, so as to ensure that it can be quickly reset after being stressed. The head end of the movable piece 3 is provided with a magnetic part 5, the magnetic part 5 is fixed on the movable piece 3 by adhesion, embedding or welding, the magnetic part 5 is made of permanent magnet material, such as neodymium iron boron or ferrite, so as to generate a stable magnetic field.

[0045] In the embodiment, the lower part of the base 1 is provided with at least one plug 8, the plug 8 is connected with the base 1 by injection molding or welding, the shape and size of the plug 8 are matched with the plug interface of the external circuit board or device, so as to realize the quick installation and electrical connection of the micro switch.

[0046] Referring to the drawings Figure 4 , the bottom of the base 1 is provided with a circuit board 7, the circuit board 7 is installed on the base 1 by screw fixation or buckle connection. The circuit board 7 is installed with a magnetic induction component 6, in the embodiment, the magnetic induction component 6 is a Hall device, which is fixed on the circuit board 7 by surface mounting or through-hole insertion, the position of the magnetic induction component 6 corresponds to the movement track of the magnetic part 5, so as to ensure that the magnetic part 5 can effectively change the magnetic field intensity sensed by the magnetic induction component 6 during movement.

[0047] More specifically, the magnetic induction component 6 is connected with an output circuit on the circuit board 7, the output circuit is used for transmitting the signal sensed by the magnetic induction component 6 to the external device.

[0048] In addition, the circuit board 7 is provided with at least one output end, the output end is connected with the external circuit by welding or plugging, which is used for transmitting the trigger signal.

[0049] It should be understood that for those skilled in the art, the specific design of the filter circuit or signal conditioning circuit on the circuit board 7 belongs to the known technology or prior art, which is not disclosed in detail in the embodiment, but those skilled in the art can select and adjust according to the actual needs.

[0050] In addition to the above structure, referring to the drawings Figure 1 and 4 , the micro switch of the embodiment further comprises an outer protective shell 9 matched with the base 1, the outer protective shell 9 and the base 1 jointly form a closed cavity for protecting the internal structure from the external environment. The material of the outer protective shell 9 can be selected as the same engineering plastic or ceramic material as the base 1, so as to ensure the mechanical strength and electrical insulation performance

[0051] Referring to the drawings Figures 2-4In this embodiment, the transmission part 4 is located above the movable piece 3 and connected to it through sliding connection or hinged connection. The outer end of the transmission part 3 is exposed through the opening on the outer protective shell 9 to connect with external mechanisms.

[0052] When the transmission part 4 is pushed by external mechanisms, the movable piece 3 drives the magnetic part 5 to approach the magnetic induction component 6. The magnetic induction component 6 senses the change of magnetic field intensity and outputs corresponding electrical signals, thus triggering the switch.

[0053] Furthermore, more specifically, refer to the attached Figures 2-4 In this embodiment, the base 1 is also provided with a limiting frame 10, which is connected to the base 1 through injection molding or fastener fixation. The shape and position of the limiting frame 10 match the head end of the movable piece 3, which is used to limit the upward stroke of the movable piece 3 and prevent it from moving excessively during the reset process.

[0054] For those skilled in the art, the specific shape and size of the outer protective shell can be optimized according to the actual application scenario to meet the installation needs of different devices, which are not disclosed in detail in this embodiment.

[0055] In actual application, the working principle of the micro switch is as follows: when external mechanisms apply pressure to the transmission part 4, the transmission part 4 transmits the force to the movable piece 3, which drives the head end of the movable piece 3 to approach the magnetic induction component 6. As the distance between the magnetic part 5 and the magnetic induction component 6 decreases, the magnetic field intensity sensed by the magnetic induction component 6 gradually increases, thus outputting corresponding electrical signals. The signals are transmitted to external devices through the output circuit on the circuit board 7, realizing the triggering of the switch. When the external mechanisms release the pressure, the movable piece 3 returns to the initial position under the action of the elastic reset force, the magnetic part moves away from the magnetic induction component 6, the magnetic field intensity sensed by the magnetic induction component 6 weakens, and the output signal disappears, thus the switch returns to the closed state.

[0056] It should be understood that the plug-in implementation of the micro switch is mainly completed by the pins 8 at the lower part of the base 1. The shape and size of the pins 8 match the plug-in interface of external circuit boards or devices to realize the quick installation and electrical connection of the switch. The design of the pins 8 conforms to the standard interface specifications, such as using standard pin pitch and interface form, to ensure compatibility with external devices. This design not only simplifies the installation process of the switch, but also improves the universality and replaceability of the switch. By integrating the magnetic induction component 6 and the circuit board 7 into the base 1 and using standardized pins 8 for quick plug-in replacement, the magnetic induction micro switch can be adapted to different devices. This modular design not only simplifies the assembly and maintenance process, but also significantly improves production efficiency.

[0057] In actual use scenarios, the micro switch can be widely used in devices that require high-precision triggering, such as mechanical keyboards, mice, and game remote control handles. Its high sensitivity and long service life characteristics make it perform well in frequently operated scenarios, and its modular design also facilitates quick replacement and maintenance between different devices, further improving the overall operation efficiency of the device.

[0058] It should also be noted that for those skilled in the art, the specific implementation of certain parts belongs to the known technology or prior art, such as the selection and installation method of the magnetic sensing component 6, etc. These contents are not disclosed in detail in the present embodiment, but those skilled in the art can select and adjust according to the actual needs.

[0059] Although exemplary embodiments of the present disclosure have been described, those skilled in the art should understand 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 protection scope of the present disclosure defined by the claims. The present disclosure is defined by the additional claims, and the equivalents of these claims are also included.

Claims

1. A microswitch based on magnetic induction, characterized in that: The micro switch comprises a base, a spring mounting seat, a movable piece, a transmission part, a magnetic part, a magnetic sensing component and a circuit board, wherein the base is a main support structure of the switch, and a spring mounting seat is arranged on the upper part of the base, and the spring mounting seat is used for fixing the tail end of the movable piece; The movable piece has a reset elasticity, and the tail end of the movable piece is fixed on the spring mounting seat, and the head end of the movable piece is provided with a magnetic part The lower part of the base is provided with at least one pin, which is used for inserting and mounting the micro switch to an external circuit board or device; The base is internally or at the bottom provided with a circuit board, and the circuit board is provided with a magnetic sensing component, and the magnetic sensing component is arranged opposite to the magnetic part, and is used for sensing the change of the magnetic field strength generated by the magnetic part; The magnetic sensing component is electrically connected with an output circuit on the circuit board, and the output circuit is used for transmitting the signal sensed by the magnetic sensing component to an external device The transmission part is arranged above the movable piece, and is used for receiving the pushing force of an external mechanism or component, and transmitting the force to the movable piece, so that the head end of the movable piece approaches the base; when the transmission part is pushed by the external mechanism, the magnetic part approaches the magnetic sensing component under the drive of the movable piece, the magnetic sensing component senses the change of the magnetic field strength and outputs a corresponding electric signal, so that the triggering of the switch is realized; The base is further provided with a limiting frame, and the limiting frame cooperates with the head end of the movable piece, and is used for limiting the upward stroke of the movable piece, so as to prevent the movable piece from moving excessively.

2. A microswitch based on magnetic induction as claimed in claim 1, wherein: Further comprising an external protective shell matched with the base, and the external protective shell and the base jointly form a closed cavity, which is used for protecting the internal structure from the external environment, and the external protective shell is provided with an opening, and the transmission part is exposed through the opening, so as to be connected with the external mechanism.

3. A microswitch based on magnetic induction as claimed in claim 1, wherein: The spring mounting seat is integrally formed with the base by one-piece injection molding or mechanical processing, and the shape and size of the spring mounting seat are matched with the tail end of the movable piece, so as to ensure that the movable piece can be stably fixed.

4. A microswitch based on magnetic induction as claimed in claim 1, wherein: The tail end of the movable piece is connected with the spring mounting seat by riveting, welding or clamping.

5. A microswitch based on magnetic induction as claimed in claim 1, wherein: The magnetic part is fixed on the movable piece by adhesion, embedding or welding, and the magnetic part is made of permanent magnetic material.

6. A microswitch based on magnetic induction as claimed in claim 1, wherein: The magnetic sensing component is a Hall device, a tunnel magnetoresistance device or other components capable of sensing the change of the magnetic field strength and converting the change into an electric signal.

7. A microswitch based on magnetic induction as claimed in claim 1, wherein: the magnetic field is generated by a permanent magnet. The magnetic sensing component is fixed on the circuit board by surface mounting or through-hole insertion, and the position of the magnetic sensing component corresponds to the movement track of the magnetic part.

8. A microswitch based on magnetic induction as claimed in claim 1, wherein: The circuit board is provided with at least one output end, and the output end is connected with the pin by welding or insertion, and the triggering signal is transmitted through the pin.

9. A micro switch based on magnetic induction as described in claim 1, characterized in that: The circuit board is further provided with a power input end connected with the pin, and the power input end is used for providing working voltage for the magnetic sensing component and other electronic components on the circuit board; and the power input end is connected to the magnetic sensing component and other circuit components through the wiring on the circuit board.

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