Inductance induction microswitch and electronic product

Abstract

The utility model discloses an inductance induction microswitch and an electronic product, and the inductance induction microswitch comprises an insulation body which is provided with a movable hole and a first elastic sheet fulcrum; the linkage rod is mounted in the movable hole and can move up and down relative to the insulating body; the metal piece is arranged at the lower end of the linkage rod so as to move up and down along with the linkage rod; one end of the switching elastic piece is arranged at the fulcrum of the first elastic piece, and the other end of the switching elastic piece acts on the linkage rod; the button is arranged on the insulating body in an up-and-down movable manner so as to drive the switching elastic sheet; when the button is pressed, the switching elastic piece is pressed to enable the other end to deform downwards, and then the linkage rod and the metal piece are driven to move downwards. After the button is released, the other end is reset upwards, and then the linkage rod and the metal piece are driven to move upwards. A mechanical contact conduction switching mode of a traditional microswitch is broken through, an electric induction mode is ingeniously utilized to complete function switching, and the microswitch has the advantages of being fast in response, capable of saving energy, reliable, long in service life and the like.

Description

Technical Field

[0001] The utility model relates to the technology of switch field, in particular to an inductive micro switch and an electronic product. Background Art

[0002] Common micro switches, such as CN 218274362U, usually include a button, a cover, a switching spring, a plastic base, and a common terminal and a normally open terminal spaced apart on the plastic base. Among them: the common terminal and the normally open terminal are usually made of metal; the common terminal has a common closed end exposed on the plastic base and a first external pin exposed on the outer surface of the plastic base; the normally open terminal has a normally open closed end exposed on the plastic base and a second external pin exposed on the outer surface of the plastic base; the switching spring is usually made of metal; one end of the switching spring is provided with a contact and extends into the switching gap above the normally open closed end, and the other end of the switching spring is electrically connected to the common closed end. The cover is generally installed on the plastic base, and a button hole is provided on the top of the cover for the button to be installed, the upper end of the button is exposed on the top of the cover, and the lower end of the button acts on the switching spring.

[0003] When installing the application, the first external pin and the second external pin need to be inserted and welded to the PCB board. The installation is troublesome and it is not convenient to disassemble the switch for inspection and replacement. Pressing the button causes the contact of the switching spring to deform downward and abut against the normally open closed end, so that the normally open terminal and the common terminal form contact and conduction. When the button is released, the switching spring is reset upward, and the contact of the switching spring is separated from the normally open closed end to form a disconnection, so that the switch is controlled. This welding fixed structure is difficult to achieve high requirements for waterproofing. When used for a long time in actual use, it is easy to affect the performance of the switch due to unsatisfactory waterproof performance, mechanical or electrical degradation, etc.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide an inductive micro switch and electronic product, which breaks the traditional micro switch's mechanical contact conduction switching method and cleverly uses electric induction to complete function switching, and has many advantages such as fast response, energy saving, reliability, and long service life.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An inductive micro switch, comprising:

[0008] The insulating body is provided with a movable hole extending up and down and a first spring plate fulcrum;

[0009] A linkage rod, which is installed in the movable hole and can be movably arranged up and down relative to the insulating body;

[0010] A metal part, which is arranged at the lower end of the connecting rod to move up and down with the connecting rod;

[0011] A switching spring, one end of which is arranged at the fulcrum of the first spring, and the other end of which acts on the connecting rod;

[0012] A button, which can be movably arranged on the insulating body up and down to drive the switching spring; the pressure point on the switching spring pressed by the button is located between the one end and the other end of the switching spring;

[0013] When the button is pressed, the switching spring is compressed so that the other end deforms downward, thereby driving the linkage rod and the metal part to move downward; after the button is released, the other end returns to its original position, thereby driving the linkage rod and the metal part to move upward.

[0014] As a preferred solution, a second spring clip fulcrum is also provided on the insulating body, an auxiliary elastic arm is connected to the switching spring clip, the fixed end of the auxiliary elastic arm is connected to the switching spring clip near the other end, the auxiliary elastic arm extends downward toward the second spring clip fulcrum, and the free end of the auxiliary elastic arm acts on the second spring clip fulcrum.

[0015] As a preferred solution, the first metal terminal and the second metal terminal are fixed by injection molding or insertion in the insulating body, and the upper ends of the first metal terminal and the second metal terminal are both protruding from the insulating body to serve as the corresponding first spring piece fulcrum and the second spring piece fulcrum respectively.

[0016] As a preferred solution, the metal piece is a pot-shaped metal sheet.

[0017] As a preferred embodiment, the movable hole includes a first through hole and a second through hole which pass through in sequence from top to bottom, the second through hole is larger than the first through hole, so that a step surface is formed between the inner side surface of the first through hole and the inner side surface of the second through hole, the connecting rod extends into the first through hole, and the metal part is located in the second through hole and is restricted below the step surface.

[0018] As a preferred embodiment, the insulating body includes a base and a cover body; the movable hole, the first spring clip fulcrum, and the second spring clip fulcrum are all arranged on the base, and the cover body is provided with an avoidance hole. The cover body is assembled on the base to cover the connecting rod, the switching spring, the first spring clip fulcrum and the second spring clip fulcrum, and the button passes through the avoidance hole and protrudes above the cover body.

[0019] As a preferred solution, the linkage rod is a plastic part, and a linkage groove is provided at the upper end of the linkage rod. The other end of the switching spring extends into or passes through the linkage groove. When the button is pressed, the other end of the switching spring abuts against the inner bottom surface of the linkage groove. After releasing the button, the other end of the switching spring abuts against the inner top surface of the linkage groove or maintains a gap with the inner bottom surface and the inner top surface of the linkage groove.

[0020] An electronic product comprises an electronic product body, wherein the electronic product body is provided with a PCB board and a switch installed above the PCB board;

[0021] The switch is an inductive micro switch as described in any of the above items; a coil and an inductance detection driver IC are provided on the PCB board, the inductance detection driver IC is connected to the coil, and the coil is located below the metal part.

[0022] As a preferred solution, the inductance detection driver IC is arranged at the bottom of the PCB board and below the coil.

[0023] As a preferred solution, the inductance detection driver IC has a CRx pin and a CTx pin, and the CRx pin and the CTx pin are respectively connected to the two ends of the coil to measure the change in inductance of the coil, and the trigger stroke of the pressing part is adjusted by setting the inductance or inductance change sensed by the inductance detection driver IC.

[0024] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it breaks the traditional micro switch that adopts mechanical contact conduction switching, and cleverly uses electric induction to complete function switching. It has many advantages such as fast response, energy saving, reliability, long service life, convenient installation and hot plugging. It omits the terminal welding process and avoids the inconvenience of disassembly caused by welding fixation. Moreover, it has no mechanical or electrical degradation and is easy to waterproof. It has a simple structure and is easy to produce and manufacture. It is suitable for promotion and application to replace the traditional terminal contact conduction type micro switch.

[0025] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an exploded view of an inductive micro switch and a PCB board according to an embodiment of the utility model;

[0027] Figure 2 This is a three-dimensional diagram of an inductive micro switch according to an embodiment of the utility model installed on a PCB board;

[0028] Figure 3 This is another three-dimensional diagram of the inductive micro switch of the embodiment of the utility model installed on the PCB board;

[0029] Figure 4 This is a front view of an inductive micro switch according to an embodiment of the utility model installed on a PCB board;

[0030] Figure 5 This is a cross-sectional view of an inductive micro switch according to an embodiment of the utility model installed on a PCB board;

[0031] Figure 6 It is a three-dimensional diagram of an inductive micro switch according to an embodiment of the utility model;

[0032] Figure 7 It is another three-dimensional diagram of the inductive micro switch of the embodiment of the utility model;

[0033] Figure 8 is a cross-sectional view of an inductive micro switch according to an embodiment of the utility model;

[0034] Fig. 9 It is an exploded view of an inductive micro switch according to an embodiment of the utility model;

[0035] Fig.10 is another exploded view of the inductive micro switch of the embodiment of the utility model;

[0036] Fig.11 It is a three-dimensional diagram of the linkage rod and metal parts of the inductive micro switch of the embodiment of the utility model;

[0037] Fig.12 It is another three-dimensional diagram of the linkage rod and the metal part of the inductive micro switch of the embodiment of the utility model;

[0038] Fig.13 is a diagram showing how the time-varying EM field around a coil induces eddy currents in a metal object (when the metal object is close to the coil);

[0039] Fig.14 This is a circuit that measures the change in inductance using a pair of CTx / CRx pins of an inductance detection driver IC.

[0040] Description of the accompanying drawings: insulating body 10', movable hole 110', button 20', switching spring 30', one end 31', the other end 32', auxiliary elastic arm 33', fixed end 331', free end 332', first spring fulcrum 311', second spring fulcrum 321', first metal terminal 301', second metal terminal 302', metal part 40, first through hole 1, second through hole 2, step surface 3, base 11', cover body 12', PCB board 100, switch 200, mounting buckle arm 111, linkage rod 21', linkage groove 211', widened portion 212', buckle protrusion 112', buckle hole 121', avoidance hole 122', coil 101, inductance detection driver IC 102, mounting hole 103, conductive connection hole 104. DETAILED DESCRIPTION

[0041] Please refer to Figures 1 to 14 As shown, it shows the specific structure of an embodiment of the utility model.

[0042] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] An inductive micro switch includes an insulating body 10', a linkage rod 21', a metal piece 40, a switching spring 30' and a button 20'.

[0044] The insulating body 10 ′ is provided with an active hole 110 ′ extending vertically and penetrating therethrough, and is also provided with a first elastic sheet fulcrum 311 ′.

[0045] The linkage rod 21' is installed in the movable hole 110' and can be movably arranged up and down relative to the insulating body 10'; the linkage rod is generally formed by injection molding, the linkage rod is a plastic part, and a linkage groove 211' is arranged at the upper end of the linkage rod.

[0046] The metal member 40 is disposed at the lower end of the linkage rod 21' to move up and down along with the linkage rod 21';

[0047] One end 31' of the switching spring 30' is disposed at the first spring fulcrum 311', and the other end 32' thereof acts on the linkage rod 21'. Specifically, the other end 32' of the switching spring 30' extends into or passes through the linkage slot 211'.

[0048] The button 20' can be movably arranged on the insulating body 10' to drive the switching spring 30'; the button 20' presses on the upper surface of the switching spring 30', and the pressure point on the switching spring 30' pressed by the button 20' is located between the one end and the other end of the switching spring 30'.

[0049] When the button 20' is pressed, the switching spring piece 30' is compressed so that the other end is deformed downward, thereby driving the linkage rod 21' and the metal member 40 to move downward. During the downward displacement, the other end of the switching spring piece 30' abuts against the inner bottom surface of the linkage groove 211'; after the button 20' is released, the other end is reset upward, thereby driving the linkage rod 21' and the metal member 40 to move upward. After complete reset, the other end of the switching spring piece 30' abuts against the inner top surface of the linkage groove 211' or maintains a gap with the inner bottom surface and the inner top surface of the linkage groove 211'.

[0050] Furthermore, the insulating body 10' is also provided with a second spring fulcrum 321', the switching spring 30' is connected with an auxiliary elastic arm 33', the fixed end of the auxiliary elastic arm 33' is connected to the switching spring 30' near the other end, the auxiliary elastic arm 33' extends downward toward the second spring fulcrum 321', the free end of the auxiliary elastic arm 33' acts on the second spring fulcrum 321', and the pressure point is located between the first spring fulcrum 311' and the second spring fulcrum 321'. In this way, the switching spring 30' can adopt the switching spring 30' structure of a traditional micro switch, which is generally made of stainless steel, can generate a switch operating force, and has a good switching feel. When the button 20' is pressed, the switching spring 30' is compressed so that the other end is deformed downward, and the fixed end 331' of the auxiliary elastic arm 33' is correspondingly deformed downward along with the switching spring 30' to change the relative position of the fixed end 331' and the free end 332', and the auxiliary elastic arm 33' itself is deformed and is in an energy storage state. In this embodiment, the insulating body 10' includes a base 11' and a cover body 12' (in other embodiments, the cover body 12' is not a necessary component); the movable hole, the first spring piece fulcrum 311', and the second spring piece fulcrum 321' are all arranged on the base 11', and the cover body 12' is provided with an avoidance hole 122'. The cover body 12' is assembled on the base 11' to cover the linkage rod 21', the switching spring 30', the first spring piece fulcrum 311' and the second spring piece fulcrum 321'. The button 20' passes through the avoidance hole and protrudes above the cover body 12'. The avoidance hole can be used to position the button 20'. Usually, the cover 12' can be assembled on the base 11' in a snap-fit ​​manner. For example, a snap hole 121' is provided on the side wall of the cover 12', and a snap convex portion 112' is correspondingly provided on the base 11', and the snap convex portion 112' is snapped into the corresponding snap hole 121'. In addition, the bottom of the insulating body 10' is provided with a mounting positioning column or / and a mounting snap arm 112 for being inserted into a PCB board.

[0051] Theoretically, it is only necessary to preset the first spring fulcrum 311' and the second spring fulcrum 321' on the insulating body 10', and the preset method and material are not limited. In actual production, the method of pre-embedded metal terminals like the traditional micro switch can still be adopted, for example: the first metal terminal 301' and the second metal terminal 302' are fixed by injection molding or plug-in in the insulating body 10', and the upper ends of the first metal terminal 301' and the second metal terminal 302' are both exposed from the insulating body 10' to serve as the corresponding first spring fulcrum 311' and the second spring fulcrum 321' respectively. The first metal terminal 301' and the second metal terminal 302' are connected to form an integral terminal, or each is separately set independently. In this embodiment, the two are formed into an integral terminal through a connecting piece. The bottom of the metal terminal does not need to extend from the bottom of the insulating body 10' like the metal terminal of the traditional micro switch, that is, the bottom of the metal terminal is hidden inside the insulating body 10'. The upper ends of the metal terminals protrude from the insulating body 10' to serve as the first spring fulcrum 311' and the second spring fulcrum 321', respectively, taking advantage of the strength and rigidity of metal materials. In addition, the stamping metal terminals have mature processing technology and low cost.

[0052] The movable hole includes a first through hole 1 and a second through hole 2 which are sequentially connected from top to bottom. The second through hole 2 is larger than the first through hole 1, so that a step surface 3 is formed between the inner side surface of the first through hole 1 and the inner side surface of the second through hole 2. The linkage rod 21' extends into the first through hole 1, and the metal component 40 is located in the second through hole 2 and is restricted below the step surface 3. Moreover, a widened portion 212' is horizontally extended outward from the periphery of the lower end of the linkage rod 21'. The widened portion 212' is located in the second through hole 2 and is restricted below the step surface 3. Therefore, during the upward resetting action, the upward stroke of the linkage rod 21' is usually limited by the widened portion 212' being stopped by the step surface 3, without relying on the contact and collision between the metal component 40 and the step surface 3 to limit the position. In this way, the metal component 40 is better protected.

[0053] The metal piece 40 is connected and fixed to the lower end of the linkage rod 21' by riveting, injection molding or snap-fitting. The metal piece 40 is a pot-shaped metal sheet. The pot-shaped refers to an arc-shaped or inclined surface extending upward from the bottom center of the metal sheet. This pot-shaped structure, on the one hand, makes the metal sheet have better strength and is not easy to deform, and on the other hand, it can improve the linearity and consistency of the sensing signal. The metal sheet is synchronously linked with the linkage rod 21', and can be obtained by stamping and forming materials such as copper alloy. The metal sheet is connected and fixed to the lower end of the linkage rod 21' (specifically the lower end of the widened part 212') by riveting, injection molding or snap-fitting. Preferably, the pot-shaped metal sheet is a centrally symmetrical structure relative to the axis L, and the linkage rod 21', the first through hole, and the second through hole also take the axis L as the central axis. The linkage rod 21' extends into the first through hole, and there is a clearance fit between it and the inner wall surface of the first through hole, and the clearance is 0-1 mm.

[0054] Next, an electronic product is introduced. In actual production, the electronic product can be widely referred to as industrial input devices and hardware including consumer electronic products, such as switch structures used in computer and mobile phone peripheral products such as mice, game controllers, keyboards, and remote controls. The electronic product includes an electronic product body, on which a PCB board 100 and a switch 200 installed on the PCB board 100 are arranged. The switch 200 is the aforementioned inductive micro switch; the PCB board 100 is provided with a coil 101 and an inductance detection driver IC 102 (also referred to as an inductance measurement chip), the inductance detection driver IC 102 is connected to the coil 101, and the coil 101 is located below the metal part 40. Preferably, the inductance detection driver IC is arranged at the bottom of the PCB board and below the coil. Two conductive connection holes 104 may be arranged on the PCB board corresponding to the two ends of the coil. The conductive connection holes 104 pass through the upper and lower ends of the PCB board. The coil may be subsequently mounted on the PCB board or integrally formed into a coil layer during the PCB process. The CRx pin and CTx pin of the inductance detection driver IC are respectively connected to the two ends of the coil through corresponding conductive connection holes. Usually, a resistor R is also connected in series between the CTx pin and one end of the coil 101, so as to form a self-inductance mode measurement circuit.

[0055] During installation, the installation positioning column 111 and / or the installation snap arm at the bottom of the insulating body 10 can be used to form an insertion positioning with the corresponding installation hole 103 on the PCB board 100, which is convenient for installation and can realize hot plugging. After installation, the bottom end of the insulating body 10 is fitted on the top surface of the PCB board 100, and the coil 101 is located in the area surrounded by the lower end opening of the second through hole 2.

[0056] In this embodiment, the coil 101 is a spiral winding arranged on the top surface of the PCB board 100, and its spiral direction is centered on the vertical axis and is arranged to extend in a spiral from the inside to the outside. Therefore, the coil is usually arranged in a flat shape horizontally, and the top surface of the coil is flush with or slightly higher than the top surface of the PCB board 100. It is also acceptable if it is set to be slightly lower than the top surface of the PCB board 100. The inductance detection driver IC 102 is a known IC, which refers to an inductance measurement chip, which is used to detect inductance or inductance changes, such as Azoteq brand IQS9320, IQS7320 and other chips. The inductance detection driver IC 102 is connected to the coil 101, and the coil 101 is located below the metal part 40. Preferably, the coil is located directly below the metal part 40. When the button is pressed, the metal part 40 moves downward relative to the insulating body 10 along with the linkage rod 21' to approach the coil 101. The inductance detection driver IC102 senses the inductance change of the coil 101 by one, and then completes the switch from function one to function two (also referred to as the switch from 0 to 1), and after releasing the button, the metal member 40 automatically resets upwards along with the linkage rod 21' under the action of the reset member, so that the metal member 40 is away from the coil 101, and the inductance detection driver IC102 senses the inductance change of the coil 101 by two (also referred to as the switch from 1 to 0), and then completes the switch from function two to function one. Function one and function two refer to two different states, and the switch is used to switch between these two states, for example: function one is disconnected, and function two is on.

[0057] The measurement of the inductance change is completed by using a pair of CRx pins and CTx pins. The EM block around the coil 101 is generated by the excitation signal at the CTx pin, and the inductance measurement of the coil 101 is performed on the CRx pin. When the metal part 40 approaches the coil 101 downward, the EM field around the coil 101 will induce an eddy current in the metal part 40. The direction of the eddy current causes it to generate an opposite EM field, which will cause the total inductance of the coil 101 to decrease. The inductance detection driver IC 102 measures the inductance change and calculates the distance between the metal part 40 and the PCB board 100 (or the coil). Therefore, when applied to actual products, the trigger point (trigger stroke) can be freely adjusted because it can set the inductance change sensed by the inductance detection driver IC to calculate the corresponding distance, which is the difference between the original position height of the metal part 40 (referring to the position height of the metal part 40 relative to the PCB board 100 or the coil 101) and the pressing stroke (also referred to as the trigger stroke). In this way, by setting the inductance or the change in inductance, the trigger stroke can be adjusted accordingly. For manufacturers / users, the trigger stroke of the button can be customized on the electronic product, especially different button strokes can be configured for different applications. That is: the trigger stroke of the button can be adjusted by setting the inductance or the change in inductance sensed by the inductance detection driver IC. The button can be completely customized, different trigger and release positions can be set, and different button strokes can be configured for different applications to meet personalized usage needs. It can support all buttons on the electronic product to be connected and controlled by the same inductance detection driver IC, and part of the buttons on the electronic product can be connected and controlled by one inductance detection driver IC, while the other part of the buttons can be connected and controlled by another inductance detection driver IC. Further, it can be divided into more than three parts, and the third part of the buttons is connected and controlled by the third inductance detection driver IC, and so on. For the buttons of different parts, the button trigger stroke can be freely defined, and even a single switch is connected and controlled by a separate inductance detection driver IC. Therefore, for the same electronic product, its buttons can be the same trigger stroke or partially different trigger strokes, without limitation. The above definition of the key trigger stroke includes two parameters: the trigger position and the release position. Different trigger strokes may refer to different one or both of these two parameters.

[0058] The design focus of the utility model is that it breaks the traditional micro switch that uses mechanical contact conduction switching, and cleverly uses electric induction to complete function switching, which has many advantages such as fast response, energy saving, reliability, long service life, convenient installation and hot plugging. It saves the terminal welding process and avoids the inconvenience of disassembly caused by welding fixation. Moreover, it has no mechanical or electrical degradation and is easy to waterproof. It has a simple structure and is easy to produce and manufacture. It is suitable for promotion and application to replace the traditional terminal contact conduction type micro switch. In addition, this kind of inductive micro switch, when used in electronic products, can completely customize the button trigger stroke. For manufacturers, mass production of a type of product / switch is easy to control and set a variety of trigger stroke parameters to meet personalized use needs.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An inductive micro switch, characterized in that: Included are: The insulating body is provided with a movable hole extending up and down and a first spring plate fulcrum; A linkage rod, which is installed in the movable hole and can be movably arranged up and down relative to the insulating body; A metal part, which is arranged at the lower end of the connecting rod to move up and down with the connecting rod to be adapted to the coil; A switching spring, one end of which is arranged at the fulcrum of the first spring, and the other end of which acts on the connecting rod; A button, which can be movably arranged on the insulating body up and down to drive the switching spring; the pressure point on the switching spring pressed by the button is located between the one end and the other end of the switching spring; When the button is pressed, the switching spring is compressed so that the other end deforms downward, thereby driving the linkage rod and the metal part to move downward; after the button is released, the other end returns to its original position, thereby driving the linkage rod and the metal part to move upward.

2. The inductive micro switch according to claim 1, characterized in that: A second spring sheet fulcrum is also provided on the insulating body, an auxiliary elastic arm is connected to the switching spring sheet, a fixed end of the auxiliary elastic arm is connected to the switching spring sheet near the other end, the auxiliary elastic arm extends downward toward the second spring sheet fulcrum, and the free end of the auxiliary elastic arm acts on the second spring sheet fulcrum.

3. The inductive micro switch according to claim 2, characterized in that: The insulating body is fixed with a first metal terminal and a second metal terminal by injection molding or insertion, and the upper ends of the first metal terminal and the second metal terminal are both protruded from the insulating body to serve as the corresponding first spring piece fulcrum and the second spring piece fulcrum respectively.

4. The inductive micro switch according to claim 1, characterized in that: The metal piece is a pot-shaped metal sheet.

5. The inductive micro switch according to claim 1 or 4, characterized in that: The movable hole includes a first through hole and a second through hole which pass through in sequence from top to bottom. The second through hole is larger than the first through hole, so that a step surface is formed between the inner side surface of the first through hole and the inner side surface of the second through hole. The connecting rod extends into the first through hole, and the metal part is located in the second through hole and is restricted below the step surface.

6. The inductive micro switch according to claim 2, characterized in that: The insulating body includes a base and a cover body; the movable hole, the first spring sheet fulcrum, and the second spring sheet fulcrum are all arranged on the base, and the cover body is provided with an avoidance hole. The cover body is assembled on the base to cover the linkage rod, the switching spring sheet, the first spring sheet fulcrum and the second spring sheet fulcrum, and the button passes through the avoidance hole and protrudes above the cover body.

7. The inductive micro switch according to claim 1, characterized in that: The linkage rod is a plastic part, and a linkage groove is provided at the upper end of the linkage rod. The other end of the switching spring extends into or passes through the linkage groove. When the button is pressed, the other end of the switching spring abuts against the inner bottom surface of the linkage groove. After the button is released, the other end of the switching spring abuts against the inner top surface of the linkage groove or maintains a gap with the inner bottom surface and the inner top surface of the linkage groove.

8. An electronic product, comprising an electronic product body, wherein the electronic product body is provided with a PCB board and a switch installed above the PCB board, wherein: The switch is an inductive micro switch according to any one of claims 1 to 7; a coil and an inductance detection driver IC are provided on the PCB board, the inductance detection driver IC is connected to both ends of the coil, and the coil is located below the metal part.

9. The electronic product according to claim 8, characterized in that: The inductance detection driving IC is arranged at the bottom of the PCB board and is located below the coil.

10. The electronic product according to claim 8 or 9, characterized in that: The inductance detection driver IC has a CRx pin and a CTx pin, and the CRx pin and the CTx pin are respectively connected to the two ends of the coil to measure the change in inductance of the coil. The trigger stroke of the pressing part is adjusted by setting the inductance or inductance change sensed by the inductance detection driver IC.

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