Automatic power-off switch

Abstract

Disclosed in the present invention is an automatic power-off switch, comprising a first housing, a second housing, a plastic rocker, an electromagnetic coil assembly, a magnetic core, a control board and a power-off sensor, wherein the plastic rocker is rotatably connected to a side wall of the second housing, and the plastic rocker can rotate relative to the second housing, so that the plastic rocker is switched between a first state and a second state, and thus the automatic power-off switch is switched between a power-on state and a power-off state; the magnetic core is arranged in the electromagnetic coil assembly, and the control board is electrically connected to an electromagnetic coil; and upon detection of a preset signal, the power-off sensor sends a signal to the control board, so that the control board controls the electromagnetic coil assembly to be powered on, so as to drive the magnetic core to move in a direction close to the plastic rocker until the magnetic core abuts against and drives the plastic rocker to rotate relative to the second housing. In the present invention, the automatic power-off switch is driven to be powered off using a mechanical power-off method, so that there is no power consumption after power-off, and the problem of a "standby" electrical device being unsafe does not occur.

Description

Automatic power-off switch

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202410868991.9 filed on July 01, 2024, and entitled "Automatic power-off switch", the present application claims priority to the Chinese patent application No. 202421542485.2 filed on July 01, 2024, and entitled "Automatic power-off switch", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of automatic power-off switch, in particular to an automatic power-off switch. BACKGROUND

[0004] The automatic power-off switch is initially designed to meet the standby power consumption requirements of many electrical products in the European Union, that is, the power consumption of electrical products during standby cannot exceed a specific value. Currently, most electrical appliance manufacturers solve this problem by reducing the standby power consumption of the electronic board to not exceed the value required by the European Union. However, electrical equipment still has standby power consumption during standby, which still causes energy waste, and the incomplete power-off of the power supply may cause safety problems of the standby electrical equipment. SUMMARY

[0005] Therefore, the main purpose of the present application is to provide an automatic power-off switch that can completely turn off electrical products and does not have standby energy loss.

[0006] To achieve the above purpose, the present application provides an automatic power-off switch, comprising:

[0007] a first shell;

[0008] a second shell, a cover is arranged on the first shell;

[0009] a plastic flap, part of which is arranged in the second shell, the plastic flap is rotatably connected to the side wall of the second shell, and the plastic flap can rotate relative to the second shell to switch between a first state and a second state, when the plastic flap is in the first state, the automatic power-off switch is powered on, and when the plastic flap is in the second state, the automatic power-off switch is powered off;

[0010] an electromagnetic coil assembly fixedly arranged in the first shell;

[0011] a magnetic core arranged in the electromagnetic coil assembly;

[0012] A control board is arranged in the first shell and electrically connected with the electromagnetic coil assembly;

[0013] The control board is electrically connected with the first power terminal,

[0014] A power-off sensor is arranged on the control board. When the power-off sensor detects a preset signal, it sends a signal to the control board to control the electromagnetic coil assembly to be powered on. When the electromagnetic coil assembly is powered on, a magnetic field is generated to drive the magnetic core to move towards the direction of approaching the plastic rocker plate until the magnetic core abuts and drives the plastic rocker plate to rotate relative to the second shell, so that the plastic rocker plate switches from the first state to the second state.

[0015] Preferably, the power-off sensor is a temperature sensor, a current sensor or a time sensor. When the power-off sensor is a temperature sensor, the temperature sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the temperature around the automatic power-off switch reaches a preset temperature. When the power-off sensor is a current sensor, the current sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the current passing through the automatic power-off switch reaches a preset current. When the power-off sensor is a time sensor, the time sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the time reaches a preset time.

[0016] Preferably, the height of the automatic power-off switch is 26-30mm, and the maximum outer diameter of the automatic power-off switch is 18-22mm.

[0017] Preferably, the automatic power-off switch further comprises a switching assembly, a first power terminal and a second power terminal. The first power terminal and the second power terminal both partially pass through the first shell and extend into the second shell. The switching assembly is in contact with the first power terminal and is in transmission cooperation with the plastic rocker plate. The plastic rocker plate can rotate relative to the second shell to drive the switching assembly to swing, so that the switching assembly approaches or moves away from the second power terminal, thereby making the automatic power-off switch powered on or powered off.

[0018] Preferably, the switching assembly comprises a first elastic member, a rolling member, and a hardware flap, the first electrical terminal supports the middle part of the hardware flap, the hardware flap has opposite free end and contact end, the plastic flap is provided with a receiving groove at one end of the first housing, the first elastic member is arranged in the receiving groove, the rolling member is partially arranged in the receiving groove, the rolling member contacts the first elastic member at one end of the first housing, the first elastic member is used to provide the rolling member with elastic force towards the free end or the contact end, so that the contact end is raised away from the second electrical terminal or the contact end is pressed to contact the second electrical terminal, thereby realizing the automatic power-off switch power-off or power-on.

[0019] Preferably, the control board is further welded with a third electrical terminal and an elastic terminal, after the switch assembly is completed, the elastic terminal and the first electrical terminal are in contact and electrically connected, at the same time of switch power-on, electricity is transmitted from the second electrical terminal to the elastic terminal through the first electrical terminal, to power the control board, and goes out from the third electrical terminal, forming a complete circuit. At the same time of power-on, all components on the control board work according to the set program.

[0020] Preferably, the automatic power-off switch has a circular, elliptical, approximately circular or approximately elliptical cross section.

[0021] Preferably, the automatic power-off switch further comprises a support frame, the support frame is arranged in the second housing, a containing space is formed between the support frame and the second housing, the hardware flap is located in the containing space, the first electrical terminal and the second electrical terminal extend into the containing space and contact the bottom surface of the support frame.

[0022] Preferably, the electromagnetic coil assembly comprises a skeleton and an electromagnetic coil wound outside the skeleton, the magnetic core is arranged in the skeleton, the magnetic core comprises a main body and an eccentric shaft arranged on the main body, the automatic power-off switch further comprises a second elastic member, the second elastic member is sleeved on the eccentric shaft, one end of the second elastic member abuts against the main body, the other end of the second elastic member abuts against the skeleton, the second elastic member is used to provide the magnetic core with elastic force away from the plastic flap, so that the magnetic core can be away from the plastic flap under the elastic force after the automatic power-off switch is powered off, to realize the reset of the magnetic core.

[0023] Preferably, the plastic rocker plate has a starting end and a closing end, the starting end is pressed to rotate the plastic rocker plate relative to the second shell in a first direction, so that the plastic rocker plate switches to the first state, and the automatic power-off switch is powered on; the closing end is pressed to rotate the plastic rocker plate relative to the second shell in a direction opposite to the first direction, so that the plastic rocker plate switches to the second state, and the automatic power-off switch is powered off; the eccentric shaft is located below the starting end, the electromagnetic coil assembly is powered on to generate a magnetic field to drive the magnetic core to move towards the starting end of the plastic rocker plate, until the magnetic core abuts the bottom of the starting end and lifts the starting end, thereby driving the plastic rocker plate to rotate relative to the second shell in a direction opposite to the first direction, so that the plastic rocker plate switches from the first state to the second state.

[0024] Preferably, the second shell has a waterproof ring extension plate, the waterproof ring extension plate is provided with a through hole, the plastic rocker plate is partially arranged in the second shell through the through hole, one end of the plastic rocker plate towards the first shell is provided with a receiving groove, the receiving groove of the plastic rocker plate is in clearance fit with the through hole, and a water outlet is arranged on the side wall of the second shell and flush with the edge of the waterproof ring extension plate.

[0025] The technical scheme has the following advantages: when the power-off sensor detects a preset signal during the operation or standby of the electrical product, a signal is sent to the control board to control the electromagnetic coil assembly to be powered on, the electromagnetic coil assembly generates a magnetic field when powered on to drive the magnetic core to move towards the plastic rocker plate, until the magnetic core abuts and drives the plastic rocker plate to rotate relative to the second shell, so that the plastic rocker plate switches from the first state to the second state, and the automatic power-off switch is powered off. The magnetic core abuts and drives the plastic rocker plate to rotate, that is, the switch key is powered off in a mechanical power-off mode, and there is no standby state, so that there is no power consumption after power-off, which is superior to the existing EU energy efficiency environmental protection instruction and meets the energy-saving and environmental protection policy of other countries. In addition, the electrical equipment is completely turned off by the mechanical power-off mode, and there is no current flow after power-off, thereby avoiding the unsafe problem of "standby" electrical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Fig. 1 is a structural schematic diagram of an automatic power-off switch in an embodiment;

[0028] Fig. 2 is a sectional axial view of the automatic power-off switch in an embodiment;

[0029] Fig. 3 is a structural schematic diagram of a control board in an embodiment;

[0030] Fig. 4 is an exploded view of the automatic power-off switch in an embodiment;

[0031] Fig. 5 is a structural schematic diagram of a second shell in an embodiment;

[0032] Fig. 6 is a partial structural schematic diagram of the automatic power-off switch in an embodiment;

[0033] In the figures, 100 is a first shell, 110 is a clamping hole, 200 is a second shell, 210 is a water outlet, 220 is a through hole, 230 is a clamping block, 300 is a plastic rocker plate, 310 is a containing groove, 320 is a shutdown end, 330 is a starting end, 340 is a rotating shaft, 400 is an electromagnetic coil assembly, 410 is a framework, 420 is an electromagnetic coil, 500 is a magnetic core, 510 is a main body, 520 is an eccentric shaft, 600 is a control board, 610 is a single-chip microcomputer, 620 is a unidirectional thyristor, 700 is a power-off sensor, 800 is a switching assembly, 810 is a first elastic member, 820 is a rolling member, 830 is a hardware rocker plate, 831 is a free end, 832 is a contact end, 833 is a limiting column, 900 is a first power terminal, 1000 is a second power terminal, 1100 is a second elastic member, 1200 is a support frame, 1210 is a limiting groove, 1300 is an accommodating space, 1400 is a limiting plate, 1500 is a waterproof ring extension plate, 1510 is a through port, 1600 is an indicator light, 1700 is an LED light, 1800 is a third power terminal, and 1900 is an elastic terminal.

[0034] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly. In addition, the description of "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, "and / or" throughout the text includes three solutions, for example, A and / or B includes A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0037] As shown in FIGS. 1-3, an automatic power-off switch includes a first housing 100, a second housing 200, a plastic rocker plate 300, an electromagnetic coil assembly 400, a magnetic core 500, a control board 600 and a power-off sensor 700; the second housing 200 is covered on the first housing 100, the plastic rocker plate 300 is partially arranged in the second housing 200, the plastic rocker plate 300 is rotationally connected with the side wall of the second housing 200, the plastic rocker plate 300 can rotate relative to the second housing 200 to switch the plastic rocker plate 300 between a first state and a second state, when the plastic rocker plate 300 is in the first state, the automatic power-off switch is powered on, when the plastic rocker plate 300 is in the second state, the automatic power-off switch is powered off, the electromagnetic coil assembly 400 is fixedly arranged in the first housing 100, the magnetic core 500 is arranged in the skeleton 410, the control board 600 is arranged in the first housing 100, the control board 600 is electrically connected with the electromagnetic coil assembly 400, a first power terminal 900 and a third power terminal 1800, the power-off sensor 700 is arranged on the control board 600, when the power-off sensor 700 detects a preset signal, a signal is sent to the control board 600 to control the electromagnetic coil 420 to be powered on, when the electromagnetic coil 420 is powered on, a magnetic field is generated to drive the magnetic core 500 to move towards the plastic rocker plate 300, until the magnetic core 500 abuts against and drives the plastic rocker plate 300 to rotate relative to the second housing 200, so that the plastic rocker plate 300 is switched from the first state to the second state. In this embodiment, the plastic rocker plate 300 is a switch key.

[0038] When the power-off sensor 700 detects the preset signal, a signal is sent to the control panel 600 to control the electromagnetic coil 420 to be powered on, and the electromagnetic coil 420 generates a magnetic field when powered on to drive the magnetic core 500 to move towards the direction of approaching the plastic rocker plate 300 until the magnetic core 500 abuts against and drives the plastic rocker plate 300 to rotate relative to the second shell 200, so that the plastic rocker plate 300 is switched from the first state to the second state, thereby automatically turning off the power of the switch. The magnetic core 500 abuts against and drives the plastic rocker plate 300 to rotate, that is, the switch key is powered off by mechanical power-off, and there is no standby state, so there is no power consumption after power-off, which is superior to the existing EU energy efficiency environmental protection directive and meets the energy-saving and environmental protection policies of other countries. In addition, since the mechanical power-off mode completely turns off the electrical equipment, there is no current flowing after power-off, thereby avoiding the unsafe problem of "standby" electrical equipment.

[0039] In the embodiment, the control panel 600 is a PCBA board. Further, the control panel 600 has a single-chip microcomputer 610 and a unidirectional thyristor 620, and when the power-off sensor 700 detects the preset signal, the single-chip microcomputer 610 sends a pulse signal to control the unidirectional thyristor 620 to be powered on, the unidirectional thyristor 620 connects the power supply of the electromagnetic coil 420, the electromagnetic coil 420 is powered on to generate a magnetic field to drive the magnetic core 500 inside the framework 410 to pop out.

[0040] In an embodiment, the power-off sensor 700 is a temperature sensor, and when the temperature sensor detects that the temperature around the automatic power-off switch reaches a preset temperature, a signal is sent to the control panel 600 to control the electromagnetic coil 420 to be powered on, and the electromagnetic coil 420 generates a magnetic field when powered on to drive the magnetic core 500 to move towards the direction of approaching the plastic rocker plate 300 until the magnetic core 500 abuts against and drives the plastic rocker plate 300 to rotate relative to the second shell 200, so that the plastic rocker plate 300 is switched to the second state, thereby making the automatic power-off switch power off. Specifically, continuous standby may cause the internal heating components of some electrical products to be continuously powered on and heated, and by setting a temperature sensor, the automatic power-off switch can detect the internal temperature of the electrical product, so that when the temperature reaches the preset temperature, the temperature sensor sends a signal to the control panel 600, and the control panel 600 turns off the automatic power-off switch by mechanical power-off. The preset temperature is selected according to the actual situation, for example, during the operation of some electrical products, the circuit or heating component fails, causing the internal temperature of the electrical product to rise sharply, which may cause danger. At this time, the temperature sensor inside the automatic power-off switch can detect the temperature change. The switch can be turned off in time to cut off the power supply of the electrical product, thereby avoiding burning of the electrical product and even causing a fire. The present application prevents such situations from occurring by setting a temperature sensor.

[0041] In another embodiment, the power-off sensor 700 is a current sensor, which sends a signal to the control board 600 to control the electromagnetic coil 420 to be powered when the current passing through the automatic power-off switch reaches a preset current, so that the electromagnetic coil 420 generates a magnetic field to drive the magnetic core 500 to move towards the plastic bimetallic strip 300 until the magnetic core 500 abuts against and drives the plastic bimetallic strip 300 to rotate relative to the second housing 200, so that the plastic bimetallic strip 300 switches to the second state, thereby causing the automatic power-off switch to be powered off. Specifically, when the electric appliance is in the standby state, the current is small, and the energy consumption is low, so that whether the electric appliance is in the standby state can be determined according to the current. When the automatic power-off switch detects that the current passing through the automatic power-off switch reaches a preset current, the automatic power-off switch is powered off, thereby achieving the purposes of protecting the electric appliance and saving energy. The preset current is selected according to the actual situation, for example, a current value slightly larger than the standby current is selected as the preset current.

[0042] In yet another embodiment, the power-off sensor 700 is a time sensor, which sends a signal to the control board 600 to control the electromagnetic coil 420 to be powered when the time reaches a preset time, so that the electromagnetic coil 420 generates a magnetic field to drive the magnetic core 500 to move towards the plastic bimetallic strip 300 until the magnetic core 500 abuts against and drives the plastic bimetallic strip 300 to rotate relative to the second housing 200, so that the plastic bimetallic strip 300 switches to the second state, thereby causing the automatic power-off switch to be powered off. Specifically, the customer sets the required preset time in advance, so that the automatic power-off switch is powered off when the electric appliance works for the preset time. In this embodiment, the time sensor refers to a timer.

[0043] The power-off sensor 700 can also be a combination of at least two of a temperature sensor, a current sensor, and a time sensor. In other embodiments, the power-off sensor 700 can be selected according to the actual needs of the customer, such as a voltage sensor, a humidity sensor, etc.

[0044] Referring to FIG. 3, the control board 600 is also welded with a third power terminal 1800 and an elastic terminal 1900. After the switch assembly is completed, the elastic terminal 1900 and the first power terminal 900 are in contact and electrically connected, and at the same time that the switch is powered on, the electricity is transmitted from the second power terminal 1000 to the elastic terminal 1900 through the first power terminal 900 to power the control board 600, and then out from the third power terminal 1800, thereby forming a complete circuit. At the same time of being powered on, all components on the control board 600 work according to the set program.

[0045] Referring to FIG. 1, the cross section of the automatic power-off switch is circular, elliptical, approximately circular or approximately elliptical. Specifically, the existing automatic power-off switch is square in structure, and the volume is relatively large. Moreover, because the appearance is square, some electric appliance manufacturers need to match a smaller circular (or elliptical) switch in terms of product structure, modeling and other factors. However, because the existing traditional circular (or other shape) switch is a common switch that cannot automatically power off, the existing switch manufacturers have been unable to design and produce a circular (or elliptical) automatic power-off switch that meets the needs of electric appliance manufacturers. The existing solution is to use a traditional circular (or elliptical) switch (which cannot automatically power off) + an electronic board. However, because there are many parts, assembly is more troublesome, and the cost is also relatively high. Moreover, the power supply cannot be completely cut off.

[0046] Further, the height of the automatic power-off switch is 26-30 mm, and the maximum outer diameter of the automatic power-off switch is 18-22 mm. Specifically, the small size of the circular automatic switch is obtained through the above-mentioned results, thereby meeting the needs of some electric appliance manufacturers for a small size of the circular automatic switch. In this embodiment, the height of the automatic power-off switch is 30 mm, and the maximum outer diameter of the automatic power-off switch is 20 mm. The size of the automatic power-off switch of the present application is similar to that of the traditional common circular switch without the automatic power-off function, and the size is much smaller than that of the structure of the traditional circular (or elliptical) switch (which cannot automatically power off) + an electronic board.

[0047] Referring to FIG. 2, the automatic power-off switch further comprises a switching assembly 800, a first power connection terminal 900 and a second power connection terminal 1000. The first power connection terminal 900 and the second power connection terminal 1000 both partially pass through the first shell 100 and extend into the second shell 200. The switching assembly 800 is in contact with the first power connection terminal 900 and is electrically connected thereto. The switching assembly 800 is in transmission cooperation with the plastic rocker plate 300. The plastic rocker plate 300 can rotate relative to the second shell 200 to drive the switching assembly 800 to swing, so that the switching assembly 800 is close to or away from the second power connection terminal 1000, thereby making the automatic power-off switch power on or power off. In this embodiment, the part of the first power connection terminal 900 and the second power connection terminal 1000 that extends into the first shell 100 is electrically connected to an external power supply. When the switching assembly 800 is in contact with the first power connection terminal 900 and the second power connection terminal 1000, a loop is formed, thereby making the automatic power-off switch power on.

[0048] Specifically, the plastic rocker plate 300 rotates relative to the second shell 200, and when entering the first state, the plastic rocker plate 300 drives the switching assembly 800 to swing, so that the switching assembly 800 is close to the second power terminal 1000, at this time the switching assembly 800 is in contact with the first power terminal 900 and the second power terminal 1000, thereby forming a loop, and the automatic power-off switch is powered on; the plastic rocker plate 300 rotates relative to the second shell 200, and when entering the second state, the plastic rocker plate 300 drives the switching assembly 800 to swing in the opposite direction, so that the switching assembly 800 is away from the second power terminal 1000, at this time the switching assembly 800 is in contact with the first power terminal 900 and separated from the second power terminal 1000, and no loop is formed, and the automatic power-off switch is powered off.

[0049] Referring to FIGS. 2 and 6, the switching assembly 800 includes a first elastic member 810, a rolling member 820, and a hardware rocker plate 830. The first power terminal 900 supports the middle part of the hardware rocker plate 830. The hardware rocker plate 830 has oppositely arranged free ends 831 and contact ends 832. The plastic rocker plate 300 is provided with a containing groove 310 at one end thereof facing the first shell 100. The first elastic member 810 is arranged in the containing groove 310. The rolling member 820 is partially arranged in the containing groove 310. The rolling member 820 is in contact with the first elastic member 810 at one end thereof facing the first shell 100. The first elastic member 810 is used to provide an elastic force to the rolling member 820 towards the free ends 831 or the contact ends 832, so as to make the contact ends 832 rise away from the second power terminal 1000 or make the contact ends 832 press to contact the second power terminal 1000, thereby realizing the power-off or power-on of the automatic power-off switch. In the embodiment, the rolling member 820 is a steel ball, and the first elastic member 810 is a spring. The one end of the first elastic member 810 facing the first shell 100 also refers to the one end of the first elastic member 810 facing the hardware rocker plate 830, that is, the one end of the first elastic member 810 facing the first shell 100 is in contact with the rolling member 820.

[0050] Specifically, when the plastic rocker 300 rotates relative to the second shell 200 into the first state, the plastic rocker 300 drives the first elastic member 810 and the rolling member 820 to rotate synchronously, so that the first elastic member 810 and the rolling member 820 change the angle to the contact end 832 of the hardware rocker 830, the first elastic member 810 provides the elastic force to the rolling member 820 to the contact end 832, so that the rolling member 820 presses the contact end 832, the contact end 832 contacts the second electrical terminal 1000, thereby forming a loop, and the automatic power-off switch is powered on; when the plastic rocker 300 rotates relative to the second shell 200 in the opposite direction, into the second state, the plastic rocker 300 drives the first elastic member 810 and the rolling member 820 to rotate in the opposite direction, so that the first elastic member 810 and the rolling member 820 change the angle to the free end 831 of the hardware rocker 830, the first elastic member 810 provides the elastic force to the rolling member 820 to the free end 831, so that the rolling member 820 presses the free end 831, so that the contact end 832 is lifted and separated from the second electrical terminal 1000, thereby no longer forming a loop, and the automatic power-off switch is powered off.

[0051] Further, the first elastic member 810 is always in a compressed state, so that the first elastic member 810 always maintains the elastic force applied to the rolling member 820, so that the rolling member 820 presses the free end 831 of the hardware rocker 830 to make the contact end 832 of the hardware rocker 830 lift and separate from the second electrical terminal 1000, or so that the rolling member 820 presses the contact end 832 of the hardware rocker 830, so that when the contact end 832 of the hardware rocker 830 presses the second electrical terminal 1000, the elastic force provided by the first elastic member 810 makes the hardware rocker 830 maintain the position at that time, thereby realizing the automatic power-off switch power-off or power-on.

[0052] In the prior art, the result of using the first elastic member 810 and the rolling member 820 is that the rolling member 820 and the first elastic member 810 are adhered to the accommodating groove 310 of the plastic rocker plate 300 by a point of lubricating oil, and then are assembled downward, that is, the rolling member 820 is always adhered to the first elastic member 810 by a point of lubricating oil, and the rolling member 820 is likely to fall off during the assembly process, and needs to be assembled for many times, resulting in complicated and tedious assembly. In the present application, the structure is designed, the plastic rocker plate 300 assembled with the first elastic member 810 and the rolling member 820 is inverted, that is, the rolling member 820 is always placed upward on the first elastic member 810, and the support frame 1200, the first connecting terminal 900, the second connecting terminal 1000, the hardware rocker plate 830 and the second shell 200 are combined and inverted and sleeved on the plastic rocker plate 300, since the hardware rocker plate 830 is movably clamped in the accommodating space 1300 formed by the support frame 1200 and the second shell 200, the hardware rocker plate 830 will not fall off during the inverted assembly, and the assembly efficiency is high and the assembly quality is good.

[0053] Referring to FIGS. 2 and 6, the automatic power-off switch further comprises a support frame 1200 arranged in the second shell 200, and an accommodating space 1300 is formed between the support frame 1200 and the second shell 200, the hardware rocker plate 830 is located in the accommodating space 1300, and the first connecting terminal 900 and the second connecting terminal 1000 extend into the accommodating space 1300 and contact the bottom surface of the support frame 1200. Specifically, the part of the first connecting terminal 900 extending into the first shell 100 is located in the middle of the accommodating space 1300, the part of the second connecting terminal 1000 extending into the first shell 100 is located in the corner of the accommodating space 1300, the middle of the hardware rocker plate 830 is supported by the first connecting terminal 900, the contact end 832 of the hardware rocker plate 830 is located above the second connecting terminal 1000, and when the hardware rocker plate 830 swings around the first connecting terminal 900 as the fulcrum, the contact end 832 can be raised away from the second connecting terminal 1000 or lowered to contact the second connecting terminal 1000.

[0054] In the present embodiment, after the support frame 1200 is combined with the first connecting terminal 900, the second connecting terminal 1000, the hardware rocker plate 830 and the second shell 200 into one body, it can be inverted, and the assembly efficiency and assembly quality can be improved when the inverted support frame 1200 is subsequently assembled with the plastic rocker plate 300, the first elastic member 810 and the rolling member 820.

[0055] Referring to FIGS. 4 and 6, the hardware rocker plate 830 is provided with a limiting column 833 on each side, and the support frame 1200 is provided with two pairs of oppositely arranged limiting plates 1400, and each limiting column 833 is located between one pair of oppositely arranged limiting plates 1400, so as to avoid deviation of the hardware rocker plate 830. Specifically, the two pairs of limiting plates 1400 can limit the movement of the hardware rocker plate 830 in front, back, left and right directions.

[0056] Further, referring to FIG. 6, the support frame 1200 has a limiting groove 1210, and the hardware rocker plate 830 is arranged in the limiting groove 1210 and is always connected with the first connecting terminal 900.

[0057] The support frame 1200 and the second shell 200 are connected through buckling.

[0058] Referring to FIG. 2, the electromagnetic coil assembly 400 includes a skeleton 410 and an electromagnetic coil 420 wound outside the skeleton 410, and the magnetic core 500 is arranged in the skeleton 410. In the embodiment, the electromagnetic coil refers to a coil wound by enameled wire.

[0059] Referring to FIG. 2, the magnetic core 500 includes a main body 510 and an eccentric shaft 520 arranged on the main body 510, and the automatic power-off switch further includes a second elastic member 1100, the second elastic member 1100 is sleeved on the eccentric shaft 520, one end of the second elastic member 1100 abuts against the main body 510, and the other end of the second elastic member 1100 abuts against the support frame 1200. The second elastic member 1100 is used to provide an elastic force of the magnetic core 500 away from the plastic rocker plate 300, so that the magnetic core 500 can move away from the plastic rocker plate 300 under the elastic force after the automatic power-off switch is powered off, to realize the reset of the magnetic core 500. Specifically, the electromagnetic coil 420 generates a magnetic field when powered on, to drive the magnetic core 500 to move in a direction close to the plastic rocker plate 300. When the magnetic core 500 moves in the direction close to the plastic rocker plate 300, the second elastic member 1100 is gradually compressed. The magnetic core 500 abuts against and drives the plastic rocker plate 300 to rotate relative to the second shell 200, until the automatic power-off switch is powered off, the electromagnetic coil 420 is also powered off and no longer operates, so that the magnetic core 500 loses the force exerted by the magnetic field, and the magnetic core 500 is reset to the position before the electromagnetic coil 420 is powered on under the action of the second elastic member 1100.

[0060] Specifically, the skeleton 410, the electromagnetic coil 420, the magnetic core 500 and the second elastic member 1100 jointly constitute the electromagnetic coil assembly 400, and the automatic power-off of the automatic power-off switch is realized through the electromagnetic coil assembly 400.

[0061] Referring to FIG. 1, the plastic rocker plate 300 has an activation end 330 and a shutdown end 320. Pressing the activation end 330 causes the plastic rocker plate 300 to rotate relative to the second housing 200 in a first direction, so that the plastic rocker plate 300 switches to a first state and the automatic power-off switch is powered on. Pressing the shutdown end 320 causes the plastic rocker plate 300 to rotate relative to the second housing 200 in a direction opposite to the first direction, so that the plastic rocker plate 300 switches to a second state and the automatic power-off switch is powered off. The eccentric shaft 520 is located below the activation end 330. The electromagnetic coil 420 generates a magnetic field when powered on to drive the magnetic core 500 to move towards the activation end 330 of the plastic rocker plate 300 until the magnetic core 500 abuts against the bottom of the activation end 330 and lifts the activation end 330, thereby driving the plastic rocker plate 300 to rotate relative to the second housing 200 in a direction opposite to the first direction, so that the plastic rocker plate 300 switches from the first state to the second state. In this embodiment, the eccentric shaft 520 is located below the activation end 330, so that the activation end 330 can be easily lifted. If the eccentric shaft 520 is close to the middle position of the plastic rocker plate 300, the torque is too short and the activation end 330 may not be lifted. When the magnetic core 500 abuts against the bottom of the activation end 330 and lifts the activation end 330, it is equivalent to pressing the shutdown end 320, both of which cause the plastic rocker plate 300 to rotate relative to the second housing 200 in a direction opposite to the first direction. In this embodiment, the first direction is the direction indicated by the X arrow in FIG. 1, i.e., the clockwise direction in FIG. 1.

[0062] Specifically, the control board 600 and the support frame 1200 are both provided with through holes through which the magnetic core 500 passes. When the electromagnetic coil 420 is powered on to generate a magnetic field, the magnetic core 500 is driven to move through the through holes of the control board 600 and the support frame 1200 towards the activation end 330 of the plastic rocker plate 300.

[0063] Referring to FIG. 5, the second housing 200 has a waterproof ring extension plate 1500 provided with a through port 1510. The accommodation groove 310 of the plastic rocker plate 300 is partially arranged in the second housing 200 through the through port 1510. The accommodation groove 310 of the plastic rocker plate 300 and the through port 1510 are gap-fitted. The sidewall of the second housing 200 is provided with a water outlet 210 flush with the edge of the waterproof ring extension plate 1500. Specifically, when water splashes into or flows into the gap between the second housing 200 and the plastic rocker plate 300, the water can be discharged through the water outlet 210.

[0064] The waterproof ring extension plate 1500 is high in the middle and low at the four sides, so that water can gather at the water outlets 210 and flow out. Specifically, the edge position of the waterproof ring extension plate 1500 corresponding to the water outlets 210 is the lowest in height; the number of the water outlets 210 is two, the two water outlets 210 are spaced apart to provide the side wall of the second shell 200, and the heights of the two water outlets 210 can be the same or one of the water outlets 210 can be set to be lower. Therefore, the present application does not need a sealing ring and also achieves a sealing effect, so that water cannot flow into the interior of the automatic power-off switch, thereby saving the cost of installing a sealing ring.

[0065] Referring to FIGS. 4 and 5, the opposite sides of the plastic warped plate 300 are respectively provided with rotating shafts 340, and the opposite sides of the second shell 200 are respectively provided with through holes 220, and the two rotating shafts 340 are arranged in the two through holes 220, so that the plastic warped plate 300 can rotate relative to the second shell 200 around the rotating shafts 340. The plastic warped plate 300 and the rotating shafts 340 are elastic, and the two rotating shafts 340 can be inserted into the two through holes 220, the two rotating shafts 340 are deformed during the insertion, and the two rotating shafts 340 are reset after the insertion, so that the two rotating shafts 340 are clamped in the two through holes 220, thereby limiting the plastic warped plate 300 relative to the second shell 200, so that the plastic warped plate 300 cannot fall off the second shell 200.

[0066] Referring to FIGS. 4 and 5, the side wall of the first shell 100 is provided with clamping holes 110, and the side of the second shell 200 is provided with clamping blocks 230, and the clamping blocks 230 are clamped in the clamping holes 110, so as to realize the clamping of the second shell 200 relative to the first shell 100. The number of the clamping holes 110 is two or more, the number of the clamping blocks 230 is the same as that of the clamping holes 110, and they are one-to-one corresponding, so that the two or more clamping blocks 230 are clamped in the two or more clamping holes 110, thereby realizing the reliable clamping of the second shell 200 relative to the first shell 100.

[0067] Referring to FIGS. 1 and 2, the automatic power-off switch further comprises an indicator lamp 1600 for indicating that the automatic power-off switch is powered on. Specifically, referring to FIG. 3, the control board 600 is provided with an LED lamp 1700, the LED lamp 1700 is aligned with the indicator lamp 1600, when the automatic power-off switch is powered on, the LED lamp 1700 is lit, and the indicator lamp 1600 emits light under the irradiation of the LED lamp 1700. In this embodiment, the indicator lamp 1600 is red, and in other embodiments, the indicator lamp 1600 can also be other colors, such as green, etc.

[0068] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent device transformation made according to the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An automatic disconnection switch, characterized in that, The application relates to an automatic power-off switch. The automatic power-off switch comprises a first shell, a second shell, a plastic flap, an electromagnetic coil assembly, a magnetic core, a control board, a power-off sensor and a switching assembly. The second shell is arranged on the first shell. The plastic flap is partially arranged in the second shell and is rotationally connected with the side wall of the second shell. The plastic flap can rotate relative to the second shell to switch between a first state and a second state. When the plastic flap is in the first state, the automatic power-off switch is powered on. When the plastic flap is in the second state, the automatic power-off switch is powered off. The electromagnetic coil assembly is fixedly arranged in the first shell.

2. The automatic disconnecting switch of claim 1, wherein, The magnetic core is arranged in the electromagnetic coil assembly.

3. The automatic disconnecting switch of claim 1, wherein, The control board is arranged in the first shell and is electrically connected with the electromagnetic coil assembly.

4. The automatic disconnecting switch of claim 1, wherein, The power-off sensor is arranged on the control board.

5. The automatic disconnecting switch of claim 1, wherein, When the power-off sensor detects a preset signal, the power-off sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on. When the electromagnetic coil assembly is powered on, a magnetic field is generated to drive the magnetic core to move towards the plastic flap until the magnetic core abuts against the plastic flap and drives the plastic flap to rotate relative to the second shell, so that the plastic flap is switched from the first state to the second state. The power-off sensor is a temperature sensor, a current sensor or a time sensor. When the power-off sensor is a temperature sensor, the temperature sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the temperature around the automatic power-off switch reaches a preset temperature. When the power-off sensor is a current sensor, the current sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the current passing through the automatic power-off switch reaches a preset current. When the power-off sensor is a time sensor, the time sensor sends a signal to the control board to control the electromagnetic coil assembly to be powered on when the time reaches a preset time. The cross section of the automatic power-off switch is circular, oval, approximately circular or approximately oval. The height of the automatic power-off switch is 26-30 mm, and the maximum outer diameter of the automatic power-off switch is 18-22 mm. The automatic power-off switch further comprises a switching assembly, a first power terminal, a second power terminal and a third power terminal. The first power terminal, the second power terminal and the third power terminal all partially pass through the first shell and extend into the second shell. The switching assembly is in contact with the first power terminal and is in transmission cooperation with the plastic flap. The plastic flap can rotate relative to the second shell to drive the switching assembly to swing, so that the switching assembly approaches or moves away from the second power terminal, thereby making the automatic power-off switch be powered on or powered off.

6. The automatic disconnecting switch of claim 5, wherein, The switching assembly comprises a first elastic member, a rolling member and a hardware flap, the first electric terminal supports the middle part of the hardware flap, the hardware flap has opposite free end and contact end, the plastic flap is provided with a containing groove at one end of the first shell, the first elastic member is arranged in the containing groove, the rolling member is partially arranged in the containing groove, the rolling member contacts the first elastic member at one end of the first shell, the first elastic member is used for providing elastic force to the rolling member towards the free end or the contact end, so that the contact end is lifted away from the second electric terminal or the contact end is pressed to contact the second electric terminal, so as to realize the automatic power-off switch power-off or power-on.

7. The automatic disconnecting switch of claim 6, wherein, The automatic power-off switch further comprises a support frame arranged in the second shell, and a containing space is formed between the support frame and the second shell, the hardware flap is located in the containing space, and the first electric terminal and the second electric terminal extend into the containing space and contact the bottom surface of the support frame.

8. The automatic disconnecting switch of claim 7, wherein, The electromagnetic coil assembly comprises a skeleton and an electromagnetic coil wound outside the skeleton, the magnetic core is arranged in the skeleton, the magnetic core comprises a main body and an eccentric shaft arranged on the main body, the automatic power-off switch further comprises a second elastic member, the second elastic member is sleeved on the eccentric shaft, one end of the second elastic member abuts against the main body, and the other end of the second elastic member abuts against the skeleton, the second elastic member is used for providing elastic force to the magnetic core away from the plastic flap, so that the magnetic core can move away from the plastic flap under the elastic force after the automatic power-off switch is powered off, so as to realize the reset of the magnetic core.

9. The automatic disconnecting switch of claim 7, wherein, The plastic flap has a starting end and a closing end, the starting end is pressed to make the plastic flap rotate relative to the second shell in a first direction, so that the plastic flap is switched to the first state, and the automatic power-off switch is powered on; The closing end is pressed to make the plastic flap rotate relative to the second shell in a direction opposite to the first direction, so that the plastic flap is switched to the second state, and the automatic power-off switch is powered off; the eccentric shaft is located below the starting end, the electromagnetic coil assembly generates a magnetic field when powered on to drive the magnetic core to move towards the starting end of the plastic flap, until the magnetic core abuts against the bottom of the starting end and lifts the starting end, thereby driving the plastic flap to rotate relative to the second shell in a direction opposite to the first direction, so that the plastic flap is switched from the first state to the second state.

10. The automatic disconnecting switch of claim 1, wherein, The second shell has a waterproof ring extension plate, the waterproof ring extension plate is provided with a through hole, the plastic flap is partially arranged in the second shell through the through hole, the plastic flap is provided with a containing groove at one end of the first shell, the containing groove of the plastic flap is gap-fitted with the through hole, and the side wall of the second shell is provided with a water outlet, and the edge of the waterproof ring extension plate is flush with the water outlet.

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