Automatic power-off switch

Abstract

The utility model discloses an automatic power-off switch, which comprises a first shell, a second shell, a plastic seesaw, an electromagnetic coil assembly, a magnetic core, a control panel and a power-off sensor, the plastic seesaw is rotationally connected with the side wall of the second shell, the plastic seesaw can rotate relative to the second shell so that the plastic seesaw can be switched between a first state and a second state, the automatic power-off switch can be switched between power-on and power-off, the magnetic core is arranged in the electromagnetic coil assembly, and the control panel is electrically connected with the electromagnetic coil. When the power-off sensor detects a preset signal, the signal is sent to the control panel, so that the control panel controls the electromagnetic coil assembly to be powered on, and the magnetic core is driven to move towards the direction close to the plastic seesaw until the magnetic core abuts against and drives the plastic seesaw to rotate relative to the second shell. According to the utility model, the automatic power-off switch is driven to be powered off in a mechanical power-off mode, so that no power consumption is generated after power off, and the problem of unsafety of standby electrical equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic power-off switches, in particular to an automatic power-off switch. Background Art

[0002] The original purpose of the automatic power-off switch was to meet the EU's requirements for the standby power consumption of many electrical products, which means that when the electrical appliances are in standby mode, the power consumed cannot exceed a specific value. At present, most electrical appliance manufacturers solve this problem by reducing the standby power consumption of electronic boards to a value not exceeding the EU's requirements. However, electrical equipment still consumes standby energy during standby, which still causes energy waste. In addition, if the power supply is not completely turned off, it may cause unsafe problems for "standby" electrical equipment. Utility Model Content

[0003] Based on this, the main purpose of the utility model is to provide an automatic power-off switch that can completely shut down electrical products without any standby energy loss.

[0004] In order to achieve the above object, the utility model provides an automatic power-off switch, comprising:

[0005] a first shell;

[0006] A second shell, covering the first shell;

[0007] a plastic seesaw, partly disposed in the second housing, the plastic seesaw being rotatably connected to a side wall of the second housing, the plastic seesaw being rotatable relative to the second housing so as to switch the plastic seesaw between a first state and a second state, the automatic power-off switch being powered on when the plastic seesaw is in the first state, and the automatic power-off switch being powered off when the plastic seesaw is in the second state;

[0008] An electromagnetic coil assembly, fixedly disposed in the first housing;

[0009] A magnetic core, disposed in the electromagnetic coil assembly;

[0010] A control board is disposed in the first housing, and the control board is electrically connected to the electromagnetic coil assembly;

[0011] The control board is electrically connected to the first power terminal.

[0012] 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 so that the control board controls the electromagnetic coil assembly to be energized. When the electromagnetic coil assembly is energized, a magnetic field is generated to drive the magnetic core to move toward the direction close to the plastic seesaw until the magnetic core resists and drives the plastic seesaw to rotate relative to the second shell, so that the plastic seesaw switches from the first state to the second state.

[0013] 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, when the temperature sensor detects that the temperature around the automatic power-off switch reaches a preset temperature, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on; when the power-off sensor is a current sensor, when the current sensor detects that the current passing through the automatic power-off switch reaches a preset current, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on; when the power-off sensor is a time sensor, when the time sensor counts to a preset time, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on.

[0014] Preferably, 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.

[0015] Preferably, the automatic power-off switch further comprises a switching component, a first power terminal and a second power terminal, wherein the first power terminal and the second power terminal partially pass through the first shell and extend into the second shell, the switching component is in contact and electrically connected with the first power terminal, the switching component is in transmission cooperation with the plastic rocker, and the plastic rocker can rotate relative to the second shell to drive the switching component to swing, thereby making the switching component approach or move away from the second power terminal, thereby turning on or off the automatic power-off switch.

[0016] Preferably, the switching assembly includes a first elastic member, a rolling member, and a metal rocker. The first power terminal supports the middle part of the metal rocker. The metal rocker has a free end and a contact end that are relatively arranged. The plastic rocker is provided with a receiving groove at one end facing the first shell. 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 end of the first elastic member facing the first shell. The first elastic member is used to provide an elastic force to the rolling member toward the free end or the contact end, so that the contact end is tilted away from the second power terminal or the contact end is pressed down to contact the second power terminal, thereby realizing the power off or power on of the automatic power-off switch.

[0017] Preferably, the control board is further welded with a third power terminal and an elastic terminal. After the switch is assembled, the elastic terminal is in electrical contact with the first power terminal. When the switch is powered on, electricity is transferred from the second power terminal to the elastic terminal through the first power terminal, supplies power to the control board, and then flows out from the third power terminal to form a complete circuit. When powered on, all components on the control board work according to the set program.

[0018] Preferably, the cross-section of the automatic power-off switch is circular, elliptical, approximately circular or approximately elliptical.

[0019] Preferably, the automatic power-off switch also includes a support frame, which is arranged in the second shell, and a storage space is formed between the support frame and the second shell. The hardware rocker is located in the storage space, and the first power terminal and the second power terminal extend into the storage space and contact with the bottom surface of the support frame.

[0020] Preferably, the electromagnetic coil assembly includes a skeleton and an electromagnetic coil wound outside the skeleton, the magnetic core is arranged in the skeleton, the magnetic core includes a main body and an eccentric shaft arranged on the main body, the automatic power-off switch also includes 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, and the second elastic member is used to provide an elastic force to the magnetic core away from the plastic seesaw, so that after the automatic power-off switch is powered off, the magnetic core can be moved away from the plastic seesaw under the elastic force to achieve the resetting of the magnetic core.

[0021] Preferably, the plastic seesaw has a start end and a stop end, and the start end is pressed to rotate the plastic seesaw in a first direction relative to the second shell, so that the plastic seesaw switches to the first state, and the automatic power-off switch is energized; the stop end is pressed to rotate the plastic seesaw in a direction opposite to the first direction relative to the second shell, so that the plastic seesaw switches to the second state, and the automatic power-off switch is powered off; the eccentric shaft is located below the start end, and the electromagnetic coil assembly is energized to generate a magnetic field to drive the magnetic core to move toward the start end of the plastic seesaw until the magnetic core abuts against the bottom of the start end and lifts up the start end, thereby driving the plastic seesaw to rotate relative to the second shell in a direction opposite to the first direction, so that the plastic seesaw switches from the first state to the second state.

[0022] Preferably, the second shell has a waterproof ring extension plate, the waterproof ring extension plate is provided with a through hole, the plastic rocker is partially arranged in the second shell through the through hole, the plastic rocker is provided with a accommodating groove at one end facing the first shell, the accommodating groove of the plastic rocker is gap-matched with the through hole, the side wall of the second shell is provided with a water outlet, and the water outlet is flush with the edge of the waterproof ring extension plate.

[0023] The technical solution of the utility model has the following advantages: when the electrical product is running or in standby mode, if the power-off sensor detects a preset signal, a signal is sent to the control board so that the control board controls the electromagnetic coil assembly to be energized. When the electromagnetic coil assembly is energized, a magnetic field is generated to drive the magnetic core to move in the direction close to the plastic seesaw until the magnetic core abuts and drives the plastic seesaw to rotate relative to the second shell, so that the plastic seesaw switches from the first state to the second state, thereby automatically powering off the switch. The utility model abuts and drives the plastic seesaw to rotate through the magnetic core, that is, the switch button is powered off through mechanical power-off, and is not in standby mode, so there is no power consumption after power-off, which is better than the existing EU energy efficiency and environmental protection directive, and meets the energy-saving and environmental protection policies of other countries. In addition, because the mechanical power-off method completely shuts down the electrical equipment, there is no current flow after power-off, thereby avoiding the unsafe problem of "standby" electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the devices shown in these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an automatic power-off switch according to an embodiment;

[0026] Figure 2 is a sectional isometric view of an automatic power off switch according to an embodiment;

[0027] Figure 3 A schematic diagram of the structure of a control panel according to an embodiment;

[0028] Figure 4 An exploded view of an automatic power-off switch according to an embodiment;

[0029] Figure 5 is a schematic structural diagram of a second housing according to an embodiment;

[0030] Figure 6 It is a partial structural schematic diagram of an automatic power-off switch according to an embodiment;

[0031] Among them, 100, first shell; 110, card hole; 200, second shell; 210, water outlet; 220, through hole; 230, card block; 300, plastic seesaw; 310, receiving groove; 320, shut-off end; 330, start end; 340, rotating shaft; 400, electromagnetic coil assembly; 410, skeleton; 420, electromagnetic coil; 500, magnetic core; 510, main body; 520, eccentric shaft; 600, control board; 610, single-chip microcomputer; 620, one-way thyristor; 700, power-off sensor; 800, switching assembly; 810, first elastic member; 820, rolling member; 830, metal rocker; 831, free end; 832, contact end; 833, limiting column; 900, first power terminal; 1000, second power terminal; 1100, second elastic member; 1200, support frame; 1210, limiting groove; 1300, accommodating space; 1400, limiting plate; 1500, waterproof ring extension plate; 1510, through port; 1600, indicator light; 1700, LED light; 1800, third power terminal; 1900, elastic terminal.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "first", "second", etc. in the utility model are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes A technical solution, B technical solution, and A and B technical solutions that meet the requirements at the same time; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to achieve it. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] like Figure 1-3 As shown, an automatic power-off switch includes a first shell 100, a second shell 200, a plastic seesaw 300, an electromagnetic coil assembly 400, a magnetic core 500, a control board 600 and a power-off sensor 700; the second shell 200 is covered on the first shell 100, the plastic seesaw 300 is partially arranged in the second shell 200, the plastic seesaw 300 is rotatably connected to the side wall of the second shell 200, and the plastic seesaw 300 can rotate relative to the second shell 200 to switch the plastic seesaw 300 between a first state and a second state. When the plastic seesaw 300 is in the first state, the automatic power-off switch is energized, and when the plastic seesaw 300 is in the second state, the automatic power-off switch is de-energized, and the electromagnetic coil assembly 400 is fixedly arranged on the first shell 100. In the housing 100, the magnetic core 500 is disposed in the frame 410, the control board 600 is disposed in the first housing 100, the control board 600 is electrically connected to the electromagnetic coil assembly 400, the first power terminal 900, and the third power terminal 1800, and the power-off sensor 700 is disposed on the control board 600. When the power-off sensor 700 detects a preset signal, it sends a signal to the control board 600, so that the control board 600 controls the electromagnetic coil 420 to be energized. When the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move toward the direction close to the plastic seesaw 300, until the magnetic core 500 abuts against and drives the plastic seesaw 300 to rotate relative to the second housing 200, so that the plastic seesaw 300 is switched from the first state to the second state. In this embodiment, the plastic seesaw 300 is a switch button.

[0036] When the electrical product is running or in standby mode, if the power-off sensor 700 detects a preset signal, a signal is sent to the control board 600, so that the control board 600 controls the electromagnetic coil 420 to be energized. When the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move in the direction close to the plastic seesaw 300, until the magnetic core 500 resists and drives the plastic seesaw 300 to rotate relative to the second shell 200, so that the plastic seesaw 300 is switched from the first state to the second state, thereby automatically powering off the switch. The utility model resists and drives the plastic seesaw 300 to rotate through the magnetic core 500, that is, the switch button is powered off through a mechanical power-off method, and is not in a standby state, so there is no power consumption after power off, which is better than the existing EU energy efficiency and environmental protection directive, and meets the energy-saving and environmental protection policies of other countries. In addition, because the mechanical power-off method completely shuts down the electrical equipment, there is no current flow after power off, thereby avoiding the unsafe problem of "standby" electrical equipment.

[0037] In this embodiment, the control board 600 is a PCBA board. Furthermore, the control board 600 has a single-chip microcomputer 610 and a one-way thyristor 620. When the power-off sensor 700 detects a preset signal, the single-chip microcomputer 610 sends a pulse signal to control the one-way thyristor 620 to be powered on. The one-way thyristor 620 connects to the power supply of the electromagnetic coil 420. The electromagnetic coil 420 is powered on to generate a magnetic field, which excites the magnetic core 500 inside the skeleton 410 to pop out.

[0038] In one embodiment, the power-off sensor 700 is a temperature sensor. When the temperature sensor detects that the temperature around the automatic power-off switch reaches a preset temperature, it sends a signal to the control board 600, so that the control board 600 controls the electromagnetic coil 420 to be energized. When the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move toward the direction close to the plastic seesaw 300, until the magnetic core 500 resists and drives the plastic seesaw 300 to rotate relative to the second shell 200, so that the plastic seesaw 300 switches to the second state, thereby turning off the automatic power-off switch. Specifically, continuous standby may cause the heating components inside some electrical products to continue to be energized and heated. 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 board 600, and the control board 600 turns off the automatic power-off switch by mechanical power-off. The preset temperature is selected according to the actual situation. For example, when the heating components of some electrical products are in operation, the circuit or heating components fail, causing the temperature inside the electrical products to rise sharply and 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 products, avoiding the electrical products from burning or even causing fire. The utility model prevents this from happening by setting a temperature sensor.

[0039] In another embodiment, the power-off sensor 700 is a current sensor. When the current sensor detects that the current passing through the automatic power-off switch reaches a preset current, a signal is sent to the control board 600, so that the control board 600 controls the electromagnetic coil 420 to be energized. When the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move toward the direction close to the plastic seesaw 300, until the magnetic core 500 resists and drives the plastic seesaw 300 to rotate relative to the second shell 200, so that the plastic seesaw 300 is switched to the second state, thereby causing the automatic power-off switch to be powered off. Specifically, when the electrical product is in the standby state, the energy consumption is less and the current is smaller, so it can be judged whether the electrical product is in the standby state according to the current size. When the automatic power-off switch detects that the current passing through the automatic power-off switch reaches the preset current, the automatic power-off switch is powered off, which serves the purpose of protecting the electrical appliance, saving energy and reducing consumption, etc. Among them, the preset current is selected according to the actual situation, for example, a current value slightly larger than the standby current is used as the preset current.

[0040] In another embodiment, the power-off sensor 700 is a time sensor. When the time sensor counts to a preset time, it sends a signal to the control board 600, so that the control board 600 controls the electromagnetic coil 420 to be energized. When the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move toward the direction close to the plastic seesaw 300, until the magnetic core 500 resists and drives the plastic seesaw 300 to rotate relative to the second shell 200, so that the plastic seesaw 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 according to the needs, so that the automatic power-off switch is powered off after the electrical product works for the preset time. In this embodiment, the time sensor refers to a timer.

[0041] The power failure sensor 700 may also be a combination of at least two of a temperature sensor, a current sensor, and a time sensor. In other embodiments, the power failure sensor 700 may be selected according to actual needs of the customer, such as using a voltage sensor, a humidity sensor, etc.

[0042] refer to Figure 3 , the control board 600 is also welded with a third power terminal 1800 and an elastic terminal 1900. After the switch is assembled, the elastic terminal 1900 and the first power terminal 900 are in contact and electrically connected. When the switch is powered on, electricity is transferred from the second power terminal 1000 through the first power terminal 900 to the elastic terminal 1900, supplying power to the control board 600 and exiting from the third power terminal 1800, forming a complete circuit. When powered on, all components on the control board 600 work according to the set program.

[0043] refer to Figure 1, the cross-section of the automatic power-off switch is circular, oval, approximately circular or approximately oval. Specifically, the existing automatic power-off switches are all square structures, and the volume is relatively large. Moreover, due to the square appearance, some electrical appliance manufacturers need to match a smaller circular (or oval) switch due to product structure, shape and other factors. However, because the existing traditional circular (or other shapes) switches are ordinary switches that cannot automatically cut off the power, the existing switch manufacturers have not been able to design and produce circular (or oval) automatic power-off switches that meet the needs of electrical appliance manufacturers. The existing solutions all use traditional circular (or oval) switches (which will not automatically cut off the power) + electronic boards. However, due to the large number of spare parts, assembly is more troublesome, the cost is also relatively high, and the power cannot be completely cut off.

[0044] Furthermore, 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 utility model obtains a small-sized circular automatic switch through the above-mentioned results, thereby meeting the needs of some electrical appliance manufacturers for small-sized circular automatic switches. In the present 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 automatic power-off switch of the utility model is similar in size to a conventional ordinary circular switch without an automatic power-off function, and is much smaller in size than a conventional circular (or oval) switch (which does not automatically power off) + electronic board structure.

[0045] refer to Figure 2 The automatic power-off switch further comprises a switching assembly 800, a first power terminal 900 and a second power terminal 1000. The first power terminal 900 and the second power terminal 1000 partially penetrate the first housing 100 and extend into the second housing 200. The switching assembly 800 is in contact with and electrically connected to the first power terminal 900. The switching assembly 800 is in transmission cooperation with the plastic rocker 300. The plastic rocker 300 can rotate relative to the second housing 200 to drive the switching assembly 800 to swing, so that the switching assembly 800 approaches or moves away from the second power terminal 1000, thereby turning on or off the automatic power-off switch. In this embodiment, the first power terminal 900 and the second power terminal 1000 are electrically connected to the external power supply as the part extending into the first housing 100. When the switching assembly 800 is in contact with the first power terminal 900 and the second power terminal 1000, a circuit is formed, so that the automatic power-off switch is powered on.

[0046] Specifically, the plastic seesaw 300 rotates relative to the second shell 200. When it enters the first state, the plastic seesaw 300 drives the switching component 800 to swing, so that the switching component 800 is close to the second power terminal 1000. At this time, the switching component 800 is in contact with both the first power terminal 900 and the second power terminal 1000, thereby forming a loop, and the automatic power-off switch is energized; the plastic seesaw 300 rotates relative to the second shell 200. When it enters the second state, the plastic seesaw 300 drives the switching component 800 to swing in the opposite direction to the previous direction, so that the switching component 800 is away from the second power terminal 1000. At this time, the switching component 800 is in contact with the first power terminal 900 and separated from the second power terminal 1000, no loop is formed, and the automatic power-off switch is powered off.

[0047] refer to Figure 2 and Figure 6 The switching assembly 800 includes a first elastic member 810, a rolling member 820, and a metal rocker 830. The first power terminal 900 supports the middle part of the metal rocker 830. The metal rocker 830 has a free end 831 and a contact end 832 that are arranged opposite to each other. The plastic rocker 300 is provided with a receiving groove 310 at one end facing the first shell 100. The first elastic member 810 is arranged in the receiving groove 310. The rolling member 820 is partially arranged in the receiving groove 310. The rolling member 820 contacts the end of the first elastic member 810 facing the first shell 100. The first elastic member 810 is used to provide an elastic force toward the free end 831 or the contact end 832 to the rolling member 820, so that the contact end 832 is tilted away from the second power terminal 1000 or the contact end 832 is pressed down to contact the second power terminal 1000, thereby realizing the automatic power-off switch to cut off or turn on the power. In this embodiment, the rolling member 820 is a steel ball and the first elastic member 810 is a spring; the end of the first elastic member 810 facing the first shell 100 also refers to the end of the first elastic member 810 facing the hardware rocker 830, that is, the end of the first elastic member 810 facing the first shell 100 contacts the rolling member 820.

[0048] Specifically, the plastic rocker 300 rotates relative to the second housing 200, and when it enters the first state, the plastic rocker 300 drives the first elastic member 810 and the rolling member 820 to rotate synchronously, so that the angles of the first elastic member 810 and the rolling member 820 change to the contact end 832 facing the hardware rocker 830, and the first elastic member 810 provides an elastic force on the rolling member 820 toward the contact end 832, so that the rolling member 820 presses down to contact the contact end 832, and the contact end 832 contacts the second power terminal 1000, thereby forming a circuit, and the automatic power-off switch is energized; the plastic rocker 300 rotates relative to the second housing 200, and the first elastic member 810 and the rolling member 820 change to the contact end 832 facing the hardware rocker 830, and the first elastic member 810 provides an elastic force on the rolling member 820 toward the contact end 832, so that the rolling member 820 presses down to contact the contact end 832, and the contact end 832 contacts the second power terminal 1000, thereby forming a circuit, and the automatic power-off switch is energized; The second housing 200 rotates in the opposite direction to that of the previous state, and when entering the second state, the plastic rocker 300 drives the first elastic member 810 and the rolling member 820 to rotate in the opposite direction to that of the previous state, so that the angles of the first elastic member 810 and the rolling member 820 change to face the free end 831 of the hardware rocker 830, and the first elastic member 810 provides an elastic force on the rolling member 820 toward the free end 831, so that the rolling member 820 is pressed down to contact the free end 831, so that the contact end 832 is tilted and separated from the second power terminal 1000, so that a circuit is no longer formed, and the automatic power-off switch is powered off.

[0049] 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 down to contact the free end 831 of the metal rocker 830, so that the contact end 832 of the metal rocker 830 is tilted and separated from the second power terminal 1000, or the rolling member 820 presses down to contact the contact end 832 of the metal rocker 830, so that when the contact end 832 of the metal rocker 830 is pressed down to contact the second power terminal 1000, the elastic force provided by the first elastic member 810 enables the metal rocker 830 to maintain the position at that time, thereby realizing the automatic power-off switch to cut off or power on.

[0050] In the prior art, the use of the first elastic member 810 and the rolling member 820 results in that the rolling member 820 and the first elastic member 810 are adhered to the receiving groove 310 of the plastic rocker 300 by a little lubricating oil and then assembled downwards, that is, the rolling member 820 is always facing downwards and is only adhered to the first elastic member 810 by a little lubricating oil. During the assembly process, the rolling member 820 is likely to fall off, and multiple assemblies are required, resulting in complicated and cumbersome assembly. The structural design of the present invention is to invert the plastic seesaw 300 equipped with the first elastic member 810 and the rolling member 820, that is, the rolling member 820 is always placed on the first elastic member 810 facing upward, and the support frame 1200, the first terminal 900, the second terminal 1000, the hardware seesaw 830 and the second shell 200 are assembled and invertedly mounted on the plastic seesaw 300. Since the hardware seesaw 830 is movably mounted by the support frame 1200 in the accommodating space 1300 formed by the second shell 200, the hardware seesaw 830 will not fall off during the inverted assembly, and the assembly efficiency is high and the assembly quality is good.

[0051] refer to Figure 2 and Figure 6 The automatic power-off switch also includes a support frame 1200, which is arranged in the second shell 200, and a receiving space 1300 is formed between the support frame 1200 and the second shell 200. The hardware rocker 830 is located in the receiving space 1300, and the first power terminal 900 and the second power terminal 1000 extend into the receiving space 1300 and contact the bottom surface of the support frame 1200. Specifically, the portion of the first power terminal 900 extending into the first housing 100 is located in the middle of the accommodating space 1300, and the portion of the second power terminal 1000 extending into the first housing 100 is located in the corner of the accommodating space 1300. The middle portion of the hardware rocker 830 is supported by the first power terminal 900, and the contact end 832 of the hardware rocker 830 is located above the second power terminal 1000. When the hardware rocker 830 swings with the first power terminal 900 as a fulcrum, the contact end 832 can be tilted away from the second power terminal 1000 or dropped to contact the second power terminal 1000.

[0052] In this embodiment, after the support frame 1200 is combined with the first power terminal 900, the second power terminal 1000, the metal rocker 830 and the second shell 200, it can be turned over, and when it is subsequently assembled with the plastic rocker 300, the first elastic member 810 and the rolling member 820, the assembly efficiency and assembly quality can be improved.

[0053] refer to Figure 4 and Figure 6The two sides of the metal rocker 830 are provided with limiting posts 833, and the support frame 1200 is provided with two pairs of limiting plates 1400 arranged opposite to each other, and each limiting post 833 is located between a pair of limiting plates 1400 arranged opposite to each other, so as to prevent the metal rocker 830 from deviating. Specifically, the two pairs of limiting plates 1400 can limit the movement of the metal rocker 830 in the front, back, left and right directions.

[0054] Further, refer to Figure 6 The support frame 1200 has a limiting groove 1210, and the metal rocker 830 is arranged in the limiting groove 1210 and is always connected to the first connecting terminal 900.

[0055] The support frame 1200 and the second shell 200 are connected by snap-fit.

[0056] refer to Figure 2 The electromagnetic coil assembly 400 includes a frame 410 and an electromagnetic coil 420 wound outside the frame 410, and the magnetic core 500 is disposed inside the frame 410. In this embodiment, the electromagnetic coil refers to a coil wound by enameled wire.

[0057] refer to Figure 2 The magnetic core 500 includes a main body 510 and an eccentric shaft 520 arranged on the main body 510. The automatic power-off switch also 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 for the magnetic core 500 to move away from the plastic seesaw 300, so that after the automatic power-off switch is powered off, the magnetic core 500 can be away from the plastic seesaw 300 under the elastic force to achieve the resetting of the magnetic core 500. Specifically, when the electromagnetic coil 420 is energized, a magnetic field is generated to drive the magnetic core 500 to move toward the direction close to the plastic seesaw 300. When the magnetic core 500 moves toward the direction close to the plastic seesaw 300, the second elastic member 1100 is gradually compressed, and the magnetic core 500 resists and drives the plastic seesaw 300 to rotate relative to the second shell 200 until the automatic power-off switch is powered off, and 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 energized under the action of the second elastic member 1100.

[0058] Specifically, the frame 410 , the electromagnetic coil 420 , the magnetic core 500 and the second elastic member 1100 together constitute an electromagnetic coil assembly 400 , and the automatic power-off of the automatic power-off switch is achieved through the electromagnetic coil assembly 400 .

[0059] refer to Figure 1The plastic seesaw 300 has a start end 330 and a stop end 320. The start end 330 is pressed to rotate the plastic seesaw 300 relative to the second shell 200 in a first direction, so that the plastic seesaw 300 is switched to the first state, and the automatic power-off switch is powered on; the stop end 320 is pressed to rotate the plastic seesaw 300 relative to the second shell 200 in a direction opposite to the first direction, so that the plastic seesaw 300 is switched to the second state, and the automatic power-off switch is powered off; the eccentric shaft 520 is located below the start end 330, and the electromagnetic coil 420 is powered to generate a magnetic field to drive the magnetic core 500 to move toward the start end 330 close to the plastic seesaw 300 until the magnetic core 500 abuts against the bottom of the start end 330 and lifts up the start end 330, thereby driving the plastic seesaw 300 to rotate relative to the second shell 200 in a direction opposite to the first direction, so that the plastic seesaw 300 is switched from the first state to the second state. The eccentric shaft 520 is located below the start end 330, so that the start end 330 can be easily lifted up. If the eccentric shaft 520 is close to the middle position of the plastic rocker 300, the torque is too short and the start end 330 may not be lifted up. The magnetic core 500 abuts against the bottom of the start end 330 and lifts up the start end 330, which is equivalent to pressing the stop end 320, and both make the plastic rocker 300 rotate relative to the second shell 200 in the direction opposite to the first direction. In this embodiment, the first direction is Figure 1 The direction indicated by the X arrow in Figure 1 In the clockwise direction.

[0060] Specifically, the control board 600 and the support frame 1200 are both provided with through holes for the magnetic core 500 to pass through. When the electromagnetic coil 420 is energized to generate a magnetic field, the magnetic core 500 is driven to pass through the through holes of the control board 600 and the support frame 1200 and move toward the starting end 330 of the plastic seesaw 300 .

[0061] refer to Figure 5 The second housing 200 has a waterproof ring extension plate 1500, and the waterproof ring extension plate 1500 is provided with a through hole 1510. The receiving groove 310 of the plastic rocker 300 is partially disposed in the second housing 200 through the through hole 1510. The receiving groove 310 of the plastic rocker 300 is clearance-matched with the through hole 1510. The side wall of the second housing 200 is provided with a water outlet 210, and the water outlet 210 is 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 300, the water can be discharged through the water outlet 210.

[0062] The waterproof ring extension plate 1500 is high in the middle and low around, so that water can gather at the water outlet 210 and flow out. Specifically, the height of the edge of the waterproof ring extension plate 1500 corresponding to the water outlet 210 is the lowest; there are two water outlets 210, and the two water outlets 210 are separated by the side wall of the second shell 200. The heights of the two water outlets 210 can be the same, or the height of one of the water outlets 210 can be set lower. Therefore, the utility model does not require a sealing ring, and also achieves a sealing effect, so that water cannot flow into the interior of the automatic power off switch, saving the cost of installing a sealing ring.

[0063] refer to Figure 4 and Figure 5 , the plastic seesaw 300 is provided with rotating shafts 340 on opposite sides, and the second housing 200 is provided with through holes 220 on opposite sides, and the two rotating shafts 340 are provided in the two through holes 220, so that the plastic seesaw 300 can rotate around the rotating shafts 340 relative to the second housing 200. The plastic seesaw 300 and the rotating shafts 340 are elastic, and the two rotating shafts 340 can be inserted into the two through holes 220. During the insertion process, the two rotating shafts 340 are deformed, and after being inserted, the two rotating shafts 340 are reset, so that the two rotating shafts 340 are stuck in the two through holes 220, so as to limit the plastic seesaw 300 relative to the second housing 200, so that the plastic seesaw 300 will not fall off from the second housing 200.

[0064] refer to Figure 4 and Figure 5 The side wall of the first housing 100 is provided with a clamping hole 110, and the side of the second housing 200 is provided with a clamping block 230, which is clamped in the clamping hole 110 to achieve the clamping connection of the second housing 200 relative to the first housing 100. The number of the clamping holes 110 is more than two, and the number of the clamping blocks 230 is the same as that of the clamping holes 110, and they correspond one to one, so that more than two clamping blocks 230 are clamped in more than two clamping holes 110 to achieve reliable clamping connection of the second housing 200 relative to the first housing 100.

[0065] refer to Figure 1 and Figure 2 The automatic power-off switch also includes an indicator light 1600, which is used to indicate that the automatic power-off switch is powered on. Figure 3 , the control panel 600 is provided with an LED lamp 1700, the LED lamp 1700 is aimed at the indicator lamp 1600, when the automatic power off switch is powered on, the LED lamp 1700 lights up, and the indicator lamp 1600 emits light under the illumination of the LED lamp 1700. In this embodiment, the indicator lamp 1600 is red, and in other embodiments, the indicator lamp 1600 may also be other colors, such as green.

[0066] The above are only preferred embodiments of the utility model, and the patent scope of the utility model is not limited thereto. All equivalent device transformations made by using the contents of the utility model specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An automatic power-off switch, characterized in that: include: a first shell; A second shell, covering the first shell; a plastic seesaw, partly disposed in the second housing, the plastic seesaw being rotatably connected to a side wall of the second housing, the plastic seesaw being rotatable relative to the second housing so as to switch the plastic seesaw between a first state and a second state, the automatic power-off switch being powered on when the plastic seesaw is in the first state, and the automatic power-off switch being powered off when the plastic seesaw is in the second state; An electromagnetic coil assembly, fixedly disposed in the first housing; A magnetic core, disposed in the electromagnetic coil assembly; A control board is disposed in the first housing, and the control board is electrically connected to the electromagnetic coil assembly; 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 so that the control board controls the electromagnetic coil assembly to be energized. When the electromagnetic coil assembly is energized, a magnetic field is generated to drive the magnetic core to move toward the direction close to the plastic seesaw until the magnetic core resists and drives the plastic seesaw to rotate relative to the second shell, so that the plastic seesaw switches from the first state to the second state.

2. The automatic power off switch according to claim 1, characterized in that: The power-off sensor is a temperature sensor, a current sensor or a time sensor. When the power-off sensor is a temperature sensor, when the temperature sensor detects that the temperature around the automatic power-off switch reaches a preset temperature, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on; when the power-off sensor is a current sensor, when the current sensor detects that the current passing through the automatic power-off switch reaches a preset current, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on; when the power-off sensor is a time sensor, when the time sensor times to a preset time, it sends a signal to the control board so that the control board controls the electromagnetic coil assembly to be powered on.

3. The automatic power off switch according to claim 1, characterized in that: The cross section of the automatic power-off switch is circular, elliptical, approximately circular or approximately elliptical.

4. The automatic power off switch according to claim 1, characterized in that: 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.

5. The automatic power off switch according to claim 1, characterized in that: The automatic power-off switch also includes a switching component, 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 component is in contact and electrically connected with the first power terminal. The switching component is in transmission cooperation with the plastic rocker. The plastic rocker can rotate relative to the second shell to drive the switching component to swing, so that the switching component is close to or away from the second power terminal, thereby turning on or off the automatic power-off switch.

6. The automatic power off switch according to claim 5, characterized in that: The switching assembly includes a first elastic member, a rolling member, and a metal rocker. The first power terminal supports the middle part of the metal rocker. The metal rocker has a free end and a contact end that are relatively arranged. An accommodating groove is opened at one end of the plastic rocker facing the first shell. The first elastic member is arranged in the accommodating groove. The rolling member is partially arranged in the accommodating groove. The rolling member contacts the end of the first elastic member facing the first shell. The first elastic member is used to provide an elastic force toward the free end or the contact end to the rolling member, so that the contact end is tilted away from the second power terminal or the contact end is pressed down to contact the second power terminal, thereby realizing the power off or power on of the automatic power-off switch.

7. The automatic power off switch according to claim 6, characterized in that: The automatic power-off switch also includes a support frame, which is arranged in the second shell, and a storage space is formed between the support frame and the second shell. The hardware rocker is located in the storage space, and the first power terminal and the second power terminal extend into the storage space and contact the bottom surface of the support frame.

8. The automatic power off switch according to claim 7, characterized in that: The electromagnetic coil assembly includes a skeleton and an electromagnetic coil wound outside the skeleton, the magnetic core is arranged in the skeleton, the magnetic core includes a main body and an eccentric shaft arranged on the main body, the automatic power-off switch also includes a second elastic member, the second elastic member is sleeved on the eccentric shaft, one end of the second elastic member abuts the main body, and the other end of the second elastic member abuts the skeleton, and the second elastic member is used to provide an elastic force for the magnetic core to move away from the plastic seesaw, so that after the automatic power-off switch is powered off, the magnetic core can move away from the plastic seesaw under the elastic force to achieve the resetting of the magnetic core.

9. The automatic power off switch according to claim 8, characterized in that: The plastic seesaw has a start end and a stop end, and the start end is pressed to rotate the plastic seesaw relative to the second housing in a first direction, so that the plastic seesaw switches to the first state, and the automatic power-off switch is energized; The shut-off end is pressed to rotate the plastic seesaw relative to the second shell in a direction opposite to the first direction, so that the plastic seesaw switches to the second state and the automatic power-off switch is powered off; the eccentric shaft is located below the starting end, and the electromagnetic coil assembly is energized to generate a magnetic field to drive the magnetic core to move toward the starting end of the plastic seesaw until the magnetic core abuts against the bottom of the starting end and lifts up the starting end, thereby driving the plastic seesaw to rotate relative to the second shell in a direction opposite to the first direction, so that the plastic seesaw switches from the first state to the second state.

10. The automatic power off switch according to claim 1, characterized in that: The second shell has a waterproof ring extension plate, and the waterproof ring extension plate is provided with a through hole. The plastic rocker is partially arranged in the second shell through the through hole. The plastic rocker is provided with a accommodating groove at one end facing the first shell, and the accommodating groove of the plastic rocker is gap-matched with the through hole. The side wall of the second shell is provided with a water outlet, and the water outlet is flush with the edge of the waterproof ring extension plate.

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