Multifunctional microswitch and application method thereof

Abstract

The invention discloses a multifunctional microswitch which is provided with a contact signal assembly, a photoelectric signal assembly and a magnetic signal assembly, the contact signal assembly comprises a metal contact and a metal end corresponding to the metal contact, the metal contact is arranged at one end, away from a reed support, of a quick-acting reed, and the metal end corresponds to the metal contact. The metal contact and the metal end part are in a normally open state when the key is not pressed, the metal contact is electrically connected with the PCB through the quick-acting reed and the reed support, and the metal end part is electrically connected with the PCB through the extended electrical pin; the multifunctional microswitch is provided with a contact signal assembly, a photoelectric signal assembly and a magnetic signal assembly, a contact signal achieves conventional electrical connection, a photoelectric signal is matched with a light-emitting element and a light-receiving element through a grating component, a magnetic signal is linked with a magnetic induction element through a magnetic piece, and energy consumption can be saved when the multifunctional microswitch is not used. Various signal assemblies are integrated, functions are expanded, diversified application requirements are met, and use flexibility and convenience are improved.

Description

Technical Field

[0001] The present invention relates to the field of microswitches, and particularly to a multifunctional microswitch and its application method. Background Art

[0002] As a commonly used electronic switch, the microswitch is widely used in various electronic devices to detect the pressing action of a button and output a corresponding electrical signal.

[0003] Traditional microswitches usually only have a single contact signal output function, with relatively single functions and unable to meet the requirements of modern electronic devices for multifunctional and highly integrated switches. For example, traditional microswitches mostly adopt a single-contact structure and can only output simple on-off signals, making it difficult to adapt to the requirements of modern electronic devices for multi-state recognition (such as short press / long press, multi-level triggering) and complex interaction logic, resulting in an obvious shortcoming in functional integration. And whether it is an optical or electromagnetic induction switch, it needs to maintain a basic power consumption in the standby state, which is contradictory to the current design trend of ultra-low power consumption in electronic devices and increases the overall energy consumption burden of the device. Summary of the Invention

[0004] In view of the above problems, the present invention aims to provide a multifunctional microswitch integrating contact, optical and magnetic signal components and its application method.

[0005] To achieve the technical purpose, the solution of the present invention is: a multifunctional microswitch, including a base body installed on a PCB board, a quick-acting reed installed on a reed bracket, and a button installed on the quick-acting reed. The button is located above the reed bracket. The microswitch has a contact signal component, an optical signal component, and a magnetic signal component, wherein,

[0006] The contact signal component includes a metal contact and a metal end corresponding to the metal contact. The metal contact is arranged at one end of the quick-acting reed away from the reed bracket. The metal contact and the metal end are in an open state when the button is not pressed. The metal contact is electrically connected to the PCB board through the quick-acting reed and the reed bracket, and the metal end is electrically connected to the PCB board through an extended electrical leg;

[0007] The optical signal component includes a grating member, and a light-emitting element and a light-receiving element electrically connected to the PCB board. The grating member is configured on the extended end of the quick-acting reed away from the metal contact, and the light-emitting element and the light-receiving element are arranged at positions matching the grating member;

[0008] The magnetic signal component includes a magnetic member and a magnetic induction element electrically connected to the PCB board. The magnetic member is linked to the button, and the magnetic induction element is arranged at a position matching the magnetic member.

[0009] Preferably, one end of the quick-acting reed is fixed on the reed bracket, and a support frame electrical pin extending towards the PCB board extends from the reed bracket. The quick-acting reed has an energy storage elastic piece abutted against the reed bracket.

[0010] Preferably, a receiving cavity is configured on the side of the button, the magnetic member is arranged in the receiving cavity, an avoidance groove allowing the magnetic member to pass through is arranged on the base body, and the magnetic induction element is located directly below the magnetic member.

[0011] Preferably, the magnetic induction element is a Hall sensor or a TMR magnetoresistive sensor for detecting the displacement of the magnetic member.

[0012] Preferably, the light-emitting element and the light-receiving element are encapsulated on a support frame, and the light-emitting element and the light-receiving element are arranged at intervals to form a light path. The light-emitting element and the light-receiving element are respectively electrically connected to the PCB board. The support frame is installed on the PCB board. Two installation grooves are formed on the support frame, and light through holes are formed through the installation grooves so as to form a light channel between the two installation grooves; the extending end moves in a direction perpendicular to the light channel during the pressing stroke of the button to change the state of the light path.

[0013] Preferably, both the reed bracket and the metal end portion are installed on the base body by a clamping method.

[0014] Preferably, the signal generated by the contact signal component is used to control the power supply to the light-emitting element, the light-receiving element, and the magnetic induction element. When no signal generated by the contact signal component is detected within a set time period, the power supply to the light-emitting element, the light-receiving element, and the magnetic induction element is stopped;

[0015] The signal generated by the optoelectronic signal component and the signal generated by the magnetic signal component can be selectively used.

[0016] Preferably, the magnetic signal component is arranged to detect the pressing stroke of the button, and the optoelectronic signal component is arranged to detect the on / off state of the light path between the light-emitting element and the light-receiving element.

[0017] The beneficial effects of the present invention are as follows: The multifunctional micro switch is equipped with three signal components, namely contact, optoelectronic, and magnetic. The contact signal realizes conventional electrical connection. The optoelectronic signal cooperates with the light-emitting element and the light-receiving element by means of a grating member. The magnetic signal relies on the linkage between the magnetic member and the magnetic induction element, and energy consumption can be saved in the non-use state. The integration of multiple signal components expands functions, meets diverse application requirements, and improves the flexibility and convenience of use. Description of the Drawings

[0018] Figure 1 is an exploded view of the micro switch in the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of the microswitch in the present invention;

[0020] Figure 3 Cross-sectional view of the microswitch in the present invention;

[0021] Figure 4 Position relationship diagram of the contact signal component, photoelectric signal component and magnetic signal component in the present invention.

[0022] In the figure: 1, PCB board; 2, base body; 201, avoidance groove; 3, reed bracket; 301, support frame electrical pin; 4, quick-acting reed; 401, energy storage spring piece; 5, button; 501, accommodation cavity; 6, contact signal component; 601, metal contact; 602, metal end; 603, electrical leg; 7, photoelectric signal component; 701, grating member; 702, photo-coupler; 703, support frame; 8, magnetic signal component; 801, magnetic induction element; 802, magnetic part. Detailed implementation manners

[0023] The following further describes the present invention in detail with reference to the drawings and specific embodiments. In order to describe the technical solutions clearly and completely, the following embodiments are selected for description; the following embodiments are some embodiments of the present invention; other embodiments obtained on the basis of this application without creative efforts belong to the protection scope of the present invention.

[0024] In the following embodiments, it should be noted that the orientation or position relationships such as "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc. are all based on the orientation or position relationships shown in the drawings, and are only for the convenience of clearly describing this embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, so it cannot be understood as a limitation to this application. At the same time, "first" and "second" in the embodiments are only used for the purpose of distinguishing descriptions, and do not represent indicating or implying relative importance.

[0025] As Figures 1-4 shown, the specific embodiment of the present invention is a multifunctional microswitch. The base body 2 of the microswitch is installed on the PCB board 1, the reed bracket 3 is fixed on the base body 2, one end of the quick-acting reed 4 is fixed on the reed bracket 3, and the other end extends out the metal contact 601.

[0026] The reed bracket 3 of this application is made of conductive material. The support frame electrical pin 301 extending towards the PCB board 1 is extended on the reed bracket 3. The metal contact 601 is electrically connected to the PCB board 1 through the conductive path of the quick-acting reed 4 and the reed bracket 3. The quick-acting reed 4 has an energy storage spring piece 401 abutted on the reed bracket 3, which is used to provide mechanical elasticity and achieve rapid response.

[0027] The microswitch has a contact signal component 6, a photoelectric signal component 7, and a magnetic signal component 8. Among them, the contact signal component 6, the photoelectric signal component 7, and the magnetic signal component 8 are all integrated into the mechanical linkage structure of the quick-acting reed 4 and the button 5. The specific structure is as follows:

[0028] Contact signal component 6: It includes a metal contact 601 and a metal end 602 corresponding to the metal contact 601. The metal contact 601 is arranged at one end of the quick-acting reed 4 away from the reed bracket 3. The metal contact 601 and the metal end 602 are in an open state when the button 5 is not pressed. The metal end 602 is electrically connected to the PCB board through an extended electrical pin 603. When the button 5 is pressed, the metal contact 601 contacts and conducts with the metal end 602, forming a closed state.

[0029] Photoelectric signal component 7: It includes a grating member 701, and a light-emitting element and a light-receiving element electrically connected to the PCB board. The grating member 701 is configured on the extended end of the quick-acting reed 4 away from the metal contact 601, and the light-emitting element and the light-receiving element are arranged at positions matching the grating member 701.

[0030] Specifically, the light-emitting element and the light-receiving element are encapsulated on a support frame 703, and the light-emitting element and the light-receiving element are arranged at intervals to form a light path. The light-emitting element and the light-receiving element are respectively electrically connected to the PCB board. The support frame 703 is installed on the PCB board. Two installation slots are provided on the support frame 703, and light through holes are provided through the installation slots to form a light channel between the two installation slots; the extended end moves in a direction perpendicular to the light channel during the pressing stroke of the button 5 to change the state of the light path.

[0031] Magnetic signal component 8: It includes a magnetic member 802 and a magnetic induction element 801 electrically connected to the PCB board. The magnetic member 802 is linked to the button 5, and the magnetic induction element 801 is arranged at a position matching the magnetic member 802. Specifically, the button 5 is located above the reed bracket 3, and a receiving cavity 501 is configured on the side of the button 5, and the magnetic member 802 is arranged in the receiving cavity 501. In order to enable the magnetic member 802 to move up and down smoothly, an avoidance groove 201 is provided on the base body 2. The magnetic induction element 801 can select a Hall sensor or a TMR magnetoresistive sensor to detect the displacement of the magnetic member 802 and the change of magnetic flux.

[0032] This application also provides a method for using a multifunctional microswitch:

[0033] When the button 5 is pressed, the quick-acting reed 4 drives the metal contact 601 to contact the metal end 602, generating a contact signal, and this signal is used to control the power supply of the light-emitting element, the light-receiving element, and the magnetic induction element 801. When no contact signal is detected within a set time period, the power supply to the light-emitting element, the light-receiving element, and the magnetic induction element 801 is stopped.

[0034] The optoelectronic signal component 7 and the magnetic signal component 8 can be selectively used according to application requirements.

[0035] When optoelectronic signal detection is adopted, the pressing action of the button 5 realizes mechanical linkage through the quick-acting reed 4. The specific process is as follows:

[0036] Initial state (button 5 not pressed): The extended end of the quick-acting reed 4 does not block the optical path, and the optical path between the photoelectric tube 702 (composed of a light-emitting element and a light-receiving element) remains unobstructed. The system output signal is logic "1".

[0037] Pressing state (button 5 pressed): The quick-acting reed 4 moves in a direction perpendicular to the optical path and blocks the optical path. The light-receiving element cannot receive the optical signal of the light-emitting element, and the system output signal switches to logic "0". Finally, through the real-time detection of the on / off state of the optical path, the 0 / 1 signal recognition of the button 5 is realized.

[0038] When magnetic signal detection is adopted, the magnetic part 802 is linked with the button 5, and the magnetic induction element 801 (such as a Hall sensor) is arranged directly below the magnetic part 802. The specific process is as follows:

[0039] Initial state (button 5 not pressed): The magnetic part 802 and the magnetic induction element 801 maintain a certain distance, and the magnetic field intensity is relatively low. The system output signal is logic "0".

[0040] Pressing state (button 5 pressed): When the button 5 is pressed to different strokes, the distance between the magnetic part 802 and the magnetic induction element 801 gradually shortens, and the magnetic field intensity increases according to a preset gradient;

[0041] The system outputs an increasing logic signal (such as "1", "2", "3", "4",... "n") according to the change of the magnetic field intensity, realizing the multi-stage switch function. Finally, through the segmented detection of the magnetic field intensity, the quantitative recognition of the pressing stroke of the button 5 is realized.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included in the protection scope of the technical solution of the present invention.

Claims

1. A multifunctional microswitch, comprising a base body mounted on a PCB board, a quick-acting reed mounted on a reed bracket, and a button mounted on the quick-acting reed, the button being located above the reed bracket, characterized in that, The microswitch has a contact signal component, an optoelectronic signal component, and a magnetic signal component. Among them, The contact signal component includes a metal contact and a metal end corresponding to the metal contact. The metal contact is arranged at one end of the quick-acting reed away from the reed bracket. The metal contact and the metal end are in an open state when the button is not pressed. The metal contact is electrically connected to the PCB through the quick-acting reed and the reed bracket, and the metal end is electrically connected to the PCB through the extended electrical leg; The optoelectronic signal component includes a grating member, a light-emitting element and a light-receiving element electrically connected to the PCB. The grating member is arranged at the extended end of the quick-acting reed away from the metal contact, and the light-emitting element and the light-receiving element are arranged at positions matching the grating member; The magnetic signal component includes a magnetic member and a magnetic induction element electrically connected to the PCB. The magnetic member is linked to the button, and the magnetic induction element is arranged at a position matching the magnetic member.

2. The multifunctional microswitch according to claim 1, characterized in that, One end of the quick-acting reed is fixed on the reed bracket, and a support frame electrical pin extending towards the PCB is provided on the reed bracket. The quick-acting reed has an energy storage spring piece abutted on the reed bracket.

3. The multifunctional microswitch according to claim 2, wherein A receiving cavity is configured on the side of the button, the magnetic member is arranged in the receiving cavity, an avoidance groove enabling the magnetic member to pass through is provided on the seat body, and the magnetic induction element is located directly below the magnetic member.

4. The multifunctional microswitch according to claim 3, characterized in that, The magnetic induction element is a Hall sensor or a TMR magnetoresistive sensor, and is used to detect the displacement of the magnetic member.

5. The multifunctional microswitch according to claim 2, characterized in that, The light-emitting element and the light-receiving element are encapsulated on a support frame, and the light-emitting element and the light-receiving element are arranged at intervals to form a light path. The light-emitting element and the light-receiving element are respectively electrically connected to the PCB. The support frame is installed on the PCB. Two installation slots are provided on the support frame, and light through holes are provided through the installation slots to form a light channel between the two installation slots; the extended end moves in a direction perpendicular to the light channel during the pressing stroke of the button to change the state of the light path.

6. The multifunctional microswitch according to claim 2, wherein Both the reed bracket and the metal end are installed on the seat body by a clamping method.

7. A method of using the multifunctional microswitch according to any one of claims 1-6, characterized in that, The signal generated by the contact signal component is used to control the power supply to the light-emitting element, the light-receiving element, and the magnetic induction element. When no signal generated by the contact signal component is detected within a set time period, the power supply to the light-emitting element, the light-receiving element, and the magnetic induction element is stopped; The signal generated by the optoelectronic signal component and the signal generated by the magnetic signal component can be selectively used.

8. The application method according to claim 7, characterized in that: The magnetic signal component is set to detect the pressing stroke of the button, and the optoelectronic signal component is set to detect the on / off state of the light path between the light-emitting element and the light-receiving element.

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