Hall key switch and electronic device

Abstract

Disclosed are a Hall key switch and an electronic device. The Hall key switch comprises a base. A first supporting point and a second supporting point are arranged on the base. A first magnetic unit capable of rotating around the first supporting point and a second magnetic unit capable of rotating around the second supporting point are further arranged on the base. Magnetic poles of the first magnetic unit and the second magnetic unit are opposite, so that the first magnetic unit and the second magnetic unit are magnetically attracted to form one body. A Hall element is further arranged on the base and is used to sense a change in the magnetic induction intensity of the first magnetic unit or the second magnetic unit so as to generate a trigger signal. A driving part used for driving the first magnetic unit and / or the second magnetic unit is further movably arranged on the base. When the driving part is driven by means of an external force, the first magnetic unit is separated from contact with the second magnetic unit. When the external force is withdrawn, the first magnetic unit and the second magnetic unit self-reset under the acting force of the attraction between the opposite magnetic poles, so as to obviate the use of a return spring for resetting, thereby improving the use performance of the Hall key switch.

Description

Hall effect key switch and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 26, 2023, with application number 202311819107.4, and invention name “A Hall Push Button Switch and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of Hall switch, and in particular to a Hall key switch and electronic equipment. Background Art

[0003] At present, the key switches on mechanical keyboards on the market, such as mechanical key switches, magnetic key switches (also known as Hall key switches), etc., for Hall key switches, the principle of Hall key switches is to drive the magnet to move through the button to produce the Hall effect with the Hall element to realize the switching of the switch logic function, and the magnet (magnetic unit) is driven by the reset spring to reset the button. That is, after the Hall element and the magnetic unit are connected and the Hall effect occurs, the reset of the magnetic unit needs to rely on the reset spring to reset itself, such as a linear Hall switch disclosed in a Chinese patent (Announcement No.: CN208226984U).

[0004] However, when the Hall effect pushbutton switch uses a reset spring to reset the magnetic unit, the reset spring is affected by the magnet, causing it to always lean to one side and rub against the plastic housing. This greatly shortens the life of the pushbutton switch and makes the feel very unpleasant. In addition, due to the magnetic force of the magnet, the reset spring has insufficient rebound force, which is prone to malfunction, thus affecting the function of the pushbutton switch. Technical issues

[0005] One of the main purposes of the present invention is to provide a Hall effect push button switch and electronic equipment, which use the principle of mutual magnetic attraction between opposite magnetic poles to achieve automatic reset, avoiding the use of springs for automatic reset. The purpose is to solve the defects of existing Hall effect push button switches, which require a reset spring to reset the magnetic unit after the Hall element and the magnetic unit are connected to generate the Hall effect, resulting in a short service life and prone to failure. Technical Solutions

[0006] The utility model provides a Hall effect push button switch, comprising a base, wherein a first fulcrum and a second fulcrum are provided on the base, and a first magnetic unit rotatable around the first fulcrum and a second magnetic unit rotatable around the second fulcrum are also provided on the base, wherein the magnetic poles of the first magnetic unit and the second magnetic unit are opposite, so that the first magnetic unit and the second magnetic unit are magnetically attracted to each other as a whole, and the base is also provided with a Hall effect element for sensing a change in the magnetic induction intensity of the first magnetic unit or the second magnetic unit to generate a trigger signal; the base is also movably provided with a driving part for driving the first magnetic unit and / or the second magnetic unit, when the driving part is driven by an external force, the first magnetic unit and the second magnetic unit come into contact and separation, and when the external force is removed, the first magnetic unit and the second magnetic unit reset themselves under the force of attraction between the opposite magnetic poles.

[0007] Furthermore, the first fulcrum is a first support rod fixed on the base, the second fulcrum is a second support rod fixed on the base and parallel to the first support rod, the end face of one end of the first magnetic unit is magnetically attracted together with the end face of one end of the second magnetic unit, and the other end of the first magnetic unit and the other end of the second magnetic unit are supported by the first support rod and the second support rod respectively.

[0008] Furthermore, the Hall element is located between the first support rod and the second support rod, and corresponds to the position of the first magnetic unit and / or the second magnetic unit; the driving part is movably arranged on the base and can move along the thickness direction of the first magnetic unit, and the driving part contacts the side of the first magnetic unit and / or the second magnetic unit facing away from the Hall element.

[0009] Furthermore, the driving portion contacts the magnetically attached positions of the first magnetic unit and the second magnetic unit.

[0010] Furthermore, a accommodating cavity is provided on the base, and the first magnetic unit, the second magnetic unit, the first fulcrum and the second fulcrum are all located in the accommodating cavity, one end of the driving part slides through a side wall of the accommodating cavity and contacts the magnetic attraction position, and the other end of the driving part extends outside the accommodating cavity.

[0011] Furthermore, the first fulcrum is a first support rod fixed on the base, the second fulcrum is a pivot shaft fixed on the base, the pivot shaft is pivoted with a connecting piece, the connecting piece is connected and fixed to the second magnetic unit, the end face of the second magnetic unit facing away from the connecting piece is magnetically attracted to the end face of one end of the first magnetic unit, and the other end of the first magnetic unit is supported by the first support rod.

[0012] Furthermore, the connecting member serves as the driving portion; or the driving portion is fixed on the connecting member.

[0013] Furthermore, the Hall element is located on a side of the first magnetic unit facing away from the second magnetic unit.

[0014] Furthermore, the Hall element is located on a side opposite to a reset direction of the first magnetic unit or the second magnetic unit.

[0015] A second aspect of the present invention provides an electronic device including the Hall effect key switch of the present invention. Beneficial effects

[0016] 1. When the Hall effect key switch of the present invention is in use, the driving part is pressed by an external force, so that the driving part drives the first magnetic unit and / or the second magnetic unit, so that the first magnetic unit and the second magnetic unit come into contact and separation. At this time, the Hall effect element senses the change in the magnetic induction intensity of the first magnetic unit or the second magnetic unit. For example, the change from presence to absence of the magnetic induction sensed by the Hall effect element generates a trigger signal, so that the control circuit electrically connected to the Hall effect element outputs an on or off signal, thereby realizing the on or off function; when the external force pressing on the driving part is released, the first magnetic unit and the second magnetic unit in the contact and separation state will automatically reset themselves under the force of attraction between opposite magnetic poles, avoiding the need for a reset spring for reset, thereby improving the service life of the key switch and maintaining the feel of the key switch, and solving the problem that the existing Hall effect key switch needs to use a reset spring to reset the magnetic unit after the Hall effect occurs, which has a short service life and is prone to failure.

[0017] 2. During use of the Hall effect push button switch of the present invention, after the external force pressing the driving part is removed, the first magnetic unit and the second magnetic unit will automatically reset and attract under the force of attraction between opposite magnetic poles, and the magnetic pole engagement process between the first magnetic unit and the second magnetic unit will generate additional feedback force to the driving part, thereby improving the feel of pressing the driving part.

[0018] When the electronic device of the present invention is in use, the service life of the electronic device of the present invention can be prolonged due to the application of the Hall effect key switch of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a Hall effect key switch in an initial state according to a first embodiment of the present invention;

[0020] FIG2 is a schematic structural diagram of a Hall effect key switch in a triggered state according to a first embodiment of the present invention;

[0021] FIG3 is a schematic structural diagram of a Hall effect push button switch in a reset state according to a first embodiment of the present invention;

[0022] FIG4 is a schematic structural diagram of a Hall effect key switch in an initial state according to a second embodiment of the present invention;

[0023] FIG5 is a schematic structural diagram of a Hall effect key switch in a triggered state according to a second embodiment of the present invention;

[0024] FIG6 is a schematic structural diagram of a Hall effect switch in a reset state according to a second embodiment of the present invention;

[0025] FIG7 is a schematic structural diagram of a Hall effect key switch in an initial state according to a third embodiment of the present invention;

[0026] FIG8 is a schematic structural diagram of a Hall effect key switch in a triggered state according to a third embodiment of the present invention;

[0027] FIG9 is a schematic structural diagram of a Hall effect push button switch in a reset state according to a third embodiment of the present invention.

[0028] Figure numerals: 10, base; 101, accommodating cavity; 11, first support rod; 12, second support rod; 13, pivot shaft; 20, first magnetic unit; 30, second magnetic unit; 40, Hall element; 41, PCB board; 50, driving part; 60, connecting part. Best Mode for Carrying Out the Invention

[0029] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation descriptions may be based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] In the description of this utility model, if there is a quantity, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Example 1

[0033] 1-3 , a first aspect of the present invention provides a Hall effect push button switch, comprising a base 10 having a first fulcrum and a second fulcrum provided thereon. The base 10 further comprises a first magnetic unit 20 rotatable about the first fulcrum and a second magnetic unit 30 rotatable about the second fulcrum, wherein the first magnetic unit 20 and the second magnetic unit 30 have opposite magnetic poles, thereby magnetically attracting the first magnetic unit 20 and the second magnetic unit 30 into one body. The base 10 further comprises a Hall effect element 40 configured to sense a change in magnetic induction intensity of the first magnetic unit 20 or the second magnetic unit 30 and generate a trigger signal. The base 10 further comprises a drive unit 50 movably configured to drive the first magnetic unit 20 and / or the second magnetic unit 30. When the drive unit 50 is actuated by an external force, the first magnetic unit 20 and the second magnetic unit 30 come into contact and separate from each other. When the external force is removed, the first magnetic unit 20 and the second magnetic unit 30 automatically reset themselves due to the attraction between their opposite magnetic poles. As can be seen, when the Hall effect key switch of the present invention is in use, the driving portion 50 is pressed by an external force, so that the driving portion 50 drives the first magnetic unit 20 and / or the second magnetic unit 30, so that the first magnetic unit 20 and the second magnetic unit 30 come into contact and separate. At this time, the Hall effect element 40 senses the change in the magnetic induction intensity of the first magnetic unit 20 or the second magnetic unit 30. For example, the change from presence to absence of the magnetic induction sensed by the Hall effect element 40 generates a trigger signal, so that the control circuit electrically connected to the Hall effect element 40 outputs an on or off signal, thereby realizing the on or off function. When the external force pressing on the driving portion 50 is released, the first magnetic unit 20 and the second magnetic unit 30 in the contact and separation state will automatically reset due to the force of attraction between opposite magnetic poles, avoiding the need for a reset spring for reset, thereby improving the life of the key switch and maintaining the feel of the key switch. This solves the problem that in the existing Hall effect key switch, after the Hall effect effect is generated by the Hall effect element 40 and the magnetic unit, a reset spring is required to automatically reset the magnetic unit, resulting in a short service life and prone to failure.

[0034] In one embodiment, referring to FIG. 2 , for example, the first magnetic unit 20 and the second magnetic unit 30 are in an integrated magnetic state, which is an initial state. In the initial state, the magnetic field strength sensed by the Hall element 40 in the first magnetic unit 20 is set to zero. When the driving unit 50 is pressed by an external force, the first magnetic unit 20 and the second magnetic unit 30 are driven by the external force to form a contact-and-disconnect state. At the same time, the first magnetic unit 20 contacts the Hall element 40, causing the Hall element 40 to sense a change in the magnetic induction of the first magnetic unit 20. That is, the magnetic field of the first magnetic unit 20 is sensed by the contacts of the Hall element 40, triggering the contacts of the Hall element 40. The magnetic field sensed by the Hall element 40 changes from zero to a positive state, thereby generating a trigger signal. As can be seen from the above, the contact-and-disconnect state between the first magnetic unit 20 and the second magnetic unit 30 is also the trigger state of the Hall element 40.

[0035] In other embodiments, for example, in the initial state, the magnetic field strength sensed by the Hall element 40 to the second magnetic unit 30 is set to zero; when the driving part 50 is pressed by an external force, the first magnetic unit 20 and the second magnetic unit 30 are driven by the external force to form a contact-separation state, and at the same time, the second magnetic unit 30 is in contact with the Hall element 40, so that the Hall element 40 senses the magnetic induction change of the second magnetic unit 30, that is, the magnetic field of the second magnetic unit 30 is sensed by the contacts of the Hall element 40, triggering the contacts of the Hall element 40, and the magnetic field sensed by the Hall element 40 changes from nothing to something, thereby generating a trigger signal.

[0036] In one embodiment, a Hall effect pushbutton switch is used to control a light. When the Hall element 40 of the Hall effect pushbutton switch generates a trigger signal and sends it to a peripheral control circuit, the control circuit turns the light on. When the external force driving the driver 50 is removed, the first magnetic unit 20 and the second magnetic unit 30 automatically reset due to the attraction between the opposite magnetic poles, and the control circuit continues to control the light to remain on. When the light needs to be turned off, the driver 50 can be pressed again, so that the first magnetic unit 20 and the second magnetic unit 30 are in a contact and separation state. At this time, the magnetic strength of the first magnetic unit 20 or the second magnetic unit 30 again triggers the Hall effect pushbutton 40 to generate a trigger signal to the control circuit. At this time, the control circuit can control the light to turn off according to the second trigger signal of the Hall effect pushbutton 40. In summary, the Hall effect pushbutton 40 only provides the control circuit with a signal to turn the light on or off. Of course, the Hall effect pushbutton switch can also be used in, but not limited to, electronic devices such as keyboards and mice.

[0037] Of course, the Hall push button switch of the present invention also includes a PCB board 41, which can be fixed on the base 10, and the Hall element 40 is mounted on the upper surface of the PCB board 41; the Hall element 40 is controlled by the PCB board 41, and the PCB board 41 is a circuit board for a control circuit that receives the triggering of the Hall element 40 and generates an output on signal or off signal.

[0038] In one embodiment, the first fulcrum is a first support rod 11 fixed on the base 10, and the second fulcrum is a second support rod 12 fixed on the base 10 and parallel to the first support rod 11. The end face of one end of the first magnetic unit 20 is magnetically attracted to the end face of one end of the second magnetic unit 30, and the other end of the first magnetic unit 20 and the other end of the second magnetic unit 30 are supported by the first support rod 11 and the second support rod 12 respectively. In this way, the first magnetic unit 20 and the second magnetic unit 30 can be magnetically attracted into one, and at the same time, the magnetically connected first magnetic unit 20 and the second magnetic unit 30 are supported by the first support rod 11 and the second support rod 12 respectively, so that the first magnetic unit 20 can rotate around the first support rod 11, and the second magnetic unit 30 can rotate around the contact point of the second support rod 12.

[0039] In one embodiment, the Hall element 40 is located between the first support rod 11 and the second support rod 12, and corresponds to the position of the first magnetic unit 20 and / or the second magnetic unit 30; the driving part 50 is movably arranged on the base 10, and can move along the thickness direction of the first magnetic unit 20 or the second magnetic unit 30. The driving part 50 contacts the side of the first magnetic unit 20 and / or the second magnetic unit 30 facing away from the Hall element 40. In this way, by pressing the driving part 50 with external force, the first magnetic unit 20 or the second magnetic unit 30 and the Hall element 40 can produce a Hall effect, that is, the magnetic field strength of the first magnetic unit 20 or the second magnetic unit 30 can be sensed by the contacts of the Hall element 40, triggering the contacts of the Hall element 40 to generate a trigger signal. Exemplarily, the Hall element 40 is located at the bottom of the first magnetic unit 20 and corresponds to the position of the first magnetic unit 20. When the driving unit 50 drives the first magnetic unit 20 and the second magnetic unit 30 to be in a contact and separation state, the first magnetic unit 20 and the Hall element 40 produce a Hall effect. In other embodiments, exemplarily, the Hall element 40 is located at the bottom of the second magnetic unit 30 and corresponds to the position of the second magnetic unit 30. When the driving unit 50 drives the first magnetic unit 20 and the second magnetic unit 30 to be in a contact and separation state, the second magnetic unit 30 and the Hall element 40 produce a Hall effect. Of course, the Hall element 40 can also be located on the side of the first magnetic unit 20 facing away from the second magnetic unit 30, or on the side of the second magnetic unit 30 facing away from the first magnetic unit 20, which is not limited here. Therefore, for those skilled in the art, as long as it is ensured that the Hall element 40 can produce a Hall effect with the first magnetic unit 20 or the second magnetic unit 30, by reasonably changing the position of the Hall element 40, it should also fall within the scope of protection of the present invention.

[0040] In one embodiment, the driving part 50 contacts the magnetically attached position of the first magnetic unit 20 and the second magnetic unit 30. The driving part 50 is a pressing rod, one end of which contacts the magnetically attached position of the first magnetic unit 20 and the second magnetic unit 30. The Hall element 40 is located at the lower end of the pressing rod. The Hall element 40 is located between the first support rod 11 and the second support rod 12, and corresponds to the position of the first magnetic unit 20. In this way, by pressing the pressing rod with external force, the first magnetic unit 20 and the second magnetic unit 30 can be in a contact and separation state, thereby causing the first magnetic unit 20 and the Hall element 40 to produce a Hall effect; after the first magnetic unit 20 and the Hall element 40 produce a Hall effect, since the first magnetic unit 20 and the second magnetic unit 30 are not completely separated, the first magnetic unit 20 and the second magnetic unit 30 can automatically return to their initial state under the action of the mutual attraction of opposite magnetic poles.

[0041] In one embodiment, referring to FIG1 , a receiving cavity 101 is provided on the base 10 , that is, it can be understood that the base 10 is a shell of the Hall push button switch, and a receiving cavity 101 is formed inside the shell. The first magnetic unit 20 , the second magnetic unit 30 , the first support rod 11 and the second support rod 12 are all located in the receiving cavity 101 , and one end of the driving part 50 slides through a side wall of the receiving cavity 101 and contacts the magnetically attracted and fitted positions of the first magnetic unit 20 and the second magnetic unit 30 , and the other end of the driving part 50 extends outside the receiving cavity 101 for external force to drive and press, thereby preventing dust and other debris from falling onto the Hall element 40 or the first magnetic unit 20 or the second magnetic unit 30 , thereby achieving a dust-proof effect.

[0042] In one embodiment, the first magnetic unit 20 can be formed by a single magnet or a combination of multiple magnets. Similarly, the second magnetic unit 30 can be formed by a single magnet or a combination of multiple magnets. It can be seen that the smallest unit of the first magnetic unit 20 is a single magnet; the smallest unit of the second magnetic unit 30 is a single magnet, and the magnet can be a magnet. It should be noted that the magnet can be a square magnet or a ring magnet, and this is not limited here. For those skilled in the art, by reasonably changing the structure of the magnet, it should also fall within the scope of protection of the present invention.

[0043] A second aspect of the present invention provides an electronic device including the Hall effect switch of the present invention. The electronic device of the present invention may be a keyboard, a mouse, or other electronic device. Because the electronic device of the present invention utilizes the Hall effect switch of the present invention, the service life of the electronic device of the present invention can be increased.

[0044] Example 2

[0045] The difference between this embodiment and the first embodiment lies in the difference in the structure of the second fulcrum and the driving structure.

[0046] 4 to 6 , in this embodiment, the second fulcrum is a pivot shaft 13 fixed on the base 10, and the pivot shaft 13 is pivotally connected to a connecting member 60, which is fixedly connected to the second magnetic unit 30. The end face of the second magnetic unit 30 facing away from the connecting member 60 is magnetically attracted to the end face of one end of the first magnetic unit 20, and the other end of the first magnetic unit 20 is supported by the first support rod 11. In this way, the first magnetic unit 20 and the second magnetic unit 30 can also be magnetically attracted to each other, and the first magnetic unit 20 can also rotate around the first fulcrum, and the second magnetic unit 30 can also rotate around the second fulcrum. Of course, in other embodiments, the structure in which the first magnetic unit 20 rotates around the first fulcrum can also adopt the structure in which the second magnetic unit 30 rotates around the pivot shaft 13, which is not limited here.

[0047] In this embodiment, the Hall element 40 is located on the side of the first magnetic unit 20 facing away from the second magnetic unit 30. In the initial state, for example, the magnetic field strength sensed by the Hall element 40 in the first magnetic unit 20 is set to 1500 Gauss. When the connecting member 60 is driven downward by an external force, the first magnetic unit 20 and the second magnetic unit 30 are in a contact and separation state. At this time, the magnetic field strength sensed by the Hall element 40 in the first magnetic unit 20 is zero, that is, the Hall element 40 senses the change from presence to absence of the magnetic field of the first magnetic unit 20, thereby generating a trigger signal.

[0048] In this embodiment, the connecting member 60 can serve as the driving portion 50, so that the connecting member 60 can be driven downward by pressing the connecting member 60 with an external force. Of course, in other embodiments, the driving portion 50 can also be fixed to the connecting member 60, and this is not limited here. In other words, it can be understood that the connecting member 60 of this embodiment can serve as the driving portion 50, or the connecting member 60 can be pressed downward by an additional driving portion 50 fixedly connected to the connecting member 60.

[0049] Example 3

[0050] The difference between this embodiment and the above embodiment is that the arrangement position of the Hall element 40 is different.

[0051] 7-9 , in this embodiment, the Hall element 40 is located on the side opposite to the reset direction of the first magnetic unit 20 or the second magnetic unit 30. For example, the reset direction of the first magnetic unit 20 or the second magnetic unit 30 is upward, and the Hall element 40 is set below the second magnetic unit 30 and corresponds to the end position of the magnetic attraction between the second magnetic unit 30 and the first magnetic unit 20. In this way, by pressing the connector 60 with an external force, the first magnetic unit 20 and the second magnetic unit 30 can be in contact and separation. At this time, one end of the magnetic attraction between the second magnetic unit 30 and the first magnetic unit 20 can be close to the Hall element, so that the Hall element senses the increase in the magnetic induction intensity of the second magnetic unit 30, which can be understood as the Hall element sensing the change from zero to one in the magnetic induction of the second magnetic unit 30, thereby generating a trigger signal. Of course, in other embodiments, the Hall element 40 can also be located below the first magnetic unit 20 and corresponds to the end position of the magnetic attraction between the first magnetic unit 20 and the second magnetic unit 30.

[0052] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A Hall key switch, comprising a base, wherein, A first fulcrum and a second fulcrum are provided on the base. A first magnetic unit rotatable about the first fulcrum and a second magnetic unit rotatable about the second fulcrum are further provided on the base. The magnetic poles of the first magnetic unit and the second magnetic unit are opposite to each other, so that the first magnetic unit and the second magnetic unit are magnetically attracted to form a whole. A Hall element is further provided on the base for inducing a trigger signal by sensing the change in the magnetic induction intensity of the first magnetic unit or the second magnetic unit. A driving part for driving the first magnetic unit and / or the second magnetic unit is movably provided on the base. When the driving part is driven by an external force, the first magnetic unit and the second magnetic unit come into contact and separate. When the external force is withdrawn, the first magnetic unit and the second magnetic unit automatically reset under the action of the attraction force between opposite magnetic poles.

2. The Hall key switch according to claim 1, wherein, The first fulcrum is a first support rod fixed on the base, and the second fulcrum is a second support rod fixed on the base and parallel to the first support rod. The end face of one end of the first magnetic unit is magnetically attracted to the end face of one end of the second magnetic unit. The other ends of the first magnetic unit and the second magnetic unit are respectively supported by the first support rod and the second support rod.

3. The Hall key switch according to claim 2, wherein, The Hall element is located between the first support rod and the second support rod and corresponds to the position of the first magnetic unit and / or the second magnetic unit. The driving part is movably provided on the base and can move along the thickness direction of the first magnetic unit. The driving part contacts the side of the first magnetic unit and / or the second magnetic unit facing away from the Hall element.

4. The Hall push-button switch according to claim 3, wherein, The driving part contacts the magnetically attracted and attached position of the first magnetic unit and the second magnetic unit.

5. The Hall key switch according to claim 4, wherein, A receiving cavity is provided on the base. The first magnetic unit, the second magnetic unit, the first fulcrum and the second fulcrum are all located in the receiving cavity. One end of the driving part slidably penetrates through a side wall of the receiving cavity and contacts the magnetically attracted and attached position. The other end of the driving part extends outside the receiving cavity.

6. The Hall pushbutton switch according to claim 1, wherein, The first fulcrum is a first support rod fixed on the base, and the second fulcrum is a pivot shaft fixed on the base. A connecting piece is pivotally connected to the pivot shaft. The connecting piece is fixedly connected to the second magnetic unit. The end face of the end of the second magnetic unit facing away from the connecting piece is magnetically attracted to the end face of one end of the first magnetic unit. The other end of the first magnetic unit is supported by the first support rod.

7. The Hall key switch according to claim 6, wherein, The connecting piece serves as the driving part; or, the driving part is fixed on the connecting piece.

8. The Hall key switch according to claim 7, wherein, The Hall element is located on the side of the first magnetic unit facing away from the second magnetic unit.

9. The Hall pushbutton switch according to claim 7, wherein, The Hall element is located on the side opposite to the reset direction of the first magnetic unit or the second magnetic unit.

10. An electronic device, wherein, Comprising a Hall key switch, the Hall key switch includes a base. Wherein, a first fulcrum and a second fulcrum are provided on the base, and a first magnetic unit rotatable around the first fulcrum and a second magnetic unit rotatable around the second fulcrum are further provided on the base. The magnetic poles of the first magnetic unit and the second magnetic unit are opposite to each other, so that the first magnetic unit and the second magnetic unit are magnetically attracted into one body. A Hall element is further provided on the base for inducing a trigger signal by sensing the change in the magnetic induction intensity of the first magnetic unit or the second magnetic unit; a driving part for driving the first magnetic unit and / or the second magnetic unit is movably provided on the base. When the driving part is driven by an external force, the first magnetic unit and the second magnetic unit come into contact and separate. When the external force is withdrawn, the first magnetic unit and the second magnetic unit automatically reset under the action of the attraction force between opposite magnetic poles.

11. The electronic device according to claim 10, wherein, The first fulcrum is a first support rod fixed on the base, the second fulcrum is a second support rod fixed on the base and parallel to the first support rod. The end face of one end of the first magnetic unit is magnetically attracted to the end face of one end of the second magnetic unit, and the other ends of the first magnetic unit and the second magnetic unit are respectively supported by the first support rod and the second support rod.

12. The electronic device according to claim 11, wherein, The Hall element is located between the first support rod and the second support rod and corresponds to the position of the first magnetic unit and / or the second magnetic unit; the driving part is movably provided on the base and can move along the thickness direction of the first magnetic unit, and the driving part contacts the side of the first magnetic unit and / or the second magnetic unit facing away from the Hall element.

13. The electronic device according to claim 12, wherein, The driving part contacts the magnetically attracted and attached position of the first magnetic unit and the second magnetic unit.

14. The electronic device according to claim 10, wherein, A receiving cavity is provided on the base. The first magnetic unit, the second magnetic unit, the first fulcrum and the second fulcrum are all located in the receiving cavity. One end of the driving part slidably penetrates through a side wall of the receiving cavity and contacts the magnetically attracted and attached position, and the other end of the driving part extends outside the receiving cavity.

15. The electronic device according to claim 10, wherein, The first fulcrum is a first support rod fixed on the base, the second fulcrum is a pivot shaft fixed on the base. The pivot shaft pivots a connecting piece, and the connecting piece is fixedly connected with the second magnetic unit. The end face of the end of the second magnetic unit facing away from the connecting piece is magnetically attracted to the end face of one end of the first magnetic unit, and the other end of the first magnetic unit is supported by the first support rod.

16. The electronic device according to claim 15, wherein, The connecting piece serves as the driving part; or, the driving part is fixed on the connecting piece.

17. The electronic device according to claim 16, wherein, The Hall element is located on the side of the first magnetic unit facing away from the second magnetic unit.

18. The electronic device according to claim 16, wherein, The Hall element is located on the side opposite to the reset direction of the first magnetic unit or the second magnetic unit.

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