Air switch with leakage protection structure for household electrical appliance

Abstract

The invention relates to the technical field of air switches, in particular to an air switch with a leakage protection structure for a household appliance. Comprising a shell, a toggle switch, a connecting piece and a rotating lever are rotationally connected in the shell, the toggle switch is provided with a first sliding groove, and the connecting piece is provided with a second sliding groove; the first connecting ring is connected into the first sliding groove in a sliding mode; the second connecting ring is connected into the second sliding groove in a sliding mode; and the rotating ring is rotationally connected into the shell, and a tension spring is installed between the rotating ring and the rotating lever. When a short circuit or electric leakage fault occurs in a circuit, the tension spring on the rotating ring does not need to additionally overcome the tension of the tension spring on the rotating ring, the tension spring on the rotating ring directly pulls the first connecting ring and the second connecting ring to move out of the self-locking station along the first sliding groove and the second sliding groove respectively, then the self-locking state of the toggle switch, the connecting piece and the rotating lever is relieved, and the circuit is disconnected; and the sensitivity of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air switches, and in particular to an air switch with a leakage protection structure for household appliances. Background Art

[0002] Air switches are indispensable safety protection devices in modern household circuits. Air switches can cut off the circuit in time when overload, short circuit and other faults occur in household circuits, protecting the safety of household circuits and users. Air switches are mainly composed of elastic parts, levers, operating handles, connecting rods, electromagnets, contact mechanisms and other components. When users use air switches to connect circuits, they usually need to manually turn the operating handle, which drives the connecting rod and lever to move, so that the elastic parts accumulate force. When the lever and connecting rod move to the self-locking position, the lever drives the contact mechanism to connect. The user releases the operating handle. At this time, the elastic force of the elastic part can only keep the lever and connecting rod in this position, but cannot drive the lever and connecting rod to reset. When special circumstances such as short circuits occur, the current in the cable increases abnormally, and the electromagnet moves under the action of the current. The electromagnet overcomes the elastic force of part of the elastic part and pushes the lever and connecting rod out of the self-locking position. Subsequently, under the elastic force of the elastic part, the lever and connecting rod are quickly reset, the contact mechanism is disconnected, and the circuit is cut off. Since the contact mechanism will age after long-term use, the aged contact mechanism will have an increase in current, causing sticking between the contact mechanisms. At this time, the electromagnet must simultaneously overcome the elastic force of the elastic part and the adhesion of the contact mechanism to push the lever and the connecting rod out of the self-locking position, which will undoubtedly reduce the sensitivity of the air switch, resulting in the air switch being unable to disconnect the circuit in time when an electrical failure occurs, increasing the risk of electrical accidents. Summary of the invention

[0003] In order to overcome the disadvantage that when the existing contact mechanism has a sticking phenomenon, the electromagnet must simultaneously overcome the elastic force of the elastic member and the sticking force of the contact mechanism, resulting in reduced sensitivity of the existing device, the present invention provides an air switch with a leakage protection structure for household appliances.

[0004] The technical solution is: an air switch with a leakage protection structure for household appliances, comprising: a shell, a toggle switch, a connecting piece and a rotating lever are rotatably connected in the shell, a toggle spring is installed between the toggle switch and the shell, the toggle switch is provided with a first slide groove, and the connecting piece is provided with a second slide groove; a first connecting ring is slidably connected in the first slide groove; a second connecting ring is slidably connected in the second slide groove, and the first connecting ring and the second connecting ring are both slidably connected to the rotating lever; a wiring terminal is fixed in the shell and electrically connected to the connecting piece; a rotating ring is rotatably connected in the shell, and a tension spring is installed between the rotating ring and the rotating lever; there are two limit plates, which are slidably connected in the first slide groove and the second slide groove respectively, and the two limit plates are respectively used to limit the first connecting ring and the second connecting ring to the self-locking position; a power storage mechanism is arranged in the shell for applying pressure to the connecting piece; a trigger mechanism is arranged in the shell for controlling the movement of the two limit plates when a short circuit or leakage occurs in the circuit.

[0005] Further description, when the first connecting ring and the second connecting ring are in the self-locking position, the angle between the plane where the first connecting ring is located and the plane where the first slide groove is located is greater than 60° and less than 85°, and the angle between the plane where the second connecting ring is located and the plane where the second slide groove is located is greater than 60° and less than 85°.

[0006] Further description, the force storage mechanism includes: a sliding plate, slidably connected to the second connecting ring, a first spring is installed between the sliding plate and the second connecting ring, a third extrusion block is fixedly connected to the outer shell, and the third extrusion block is used to squeeze the sliding plate to move; a reset component is arranged in the outer shell, which is used to automatically reset the first connecting ring and the second connecting ring.

[0007] Further description, the reset component includes: a first extrusion block fixedly connected in the shell and used for extruding the first connecting ring to move and reset; a second extrusion block fixedly connected in the shell and used for extruding the second connecting ring to move and reset.

[0008] Further description, the trigger mechanism includes: a first traction rope, fixedly connected to the limit plate on the toggle switch, and the shell and the toggle switch are both slidably connected to the first traction rope; a second traction rope, fixedly connected to the limit plate on the connecting member, and the shell and the connecting member are both slidably connected to the second traction rope; a spiral coil, fixedly connected to the shell, the shell is slidably connected to a magnet block, and a second spring is installed between the two, there is damping between the shell and the magnet block, and the magnet block is located in the spiral coil; a sliding ring, slidably connected to the magnet block, and the first traction rope and the second traction rope are both fixedly connected to the sliding ring; a limiting component, arranged in the shell, used to prevent the sliding ring from resetting immediately after tripping; a leakage protection component, arranged in the shell, used to push the magnet block to move when leakage occurs.

[0009] Further description, the limiting component includes: a first elastic telescopic rod, fixedly connected to the outer shell; a first limiting member, fixedly connected to the telescopic end of the first elastic telescopic rod, the first limiting member is used to limit the sliding ring, and the magnet block squeezes the first limiting member; an elastic limiting member, fixedly connected to the outer shell, the elastic limiting member is used to limit the sliding ring, and a third spring is installed between the sliding ring and the magnet block.

[0010] Further description, the limit plate is provided with an inclined surface, and the inclined surfaces of the two limit plates are respectively located on the side away from the adjacent first connecting ring and the side away from the adjacent second connecting ring, the first connecting ring and the second connecting ring are respectively reset by squeezing the inclined surfaces of the adjacent limit plates, and a fourth spring is installed between the toggle switch and the connecting piece and the adjacent limit plates.

[0011] Further description, the leakage protection component includes: an induction coil, fixedly connected to the shell, an equal number of neutral wires and live wires passing through the induction coil at the same time; an electromagnet, fixedly connected to the shell, the electromagnet is located on the upper side of the magnet block, and the magnetic force of the electromagnet is opposite to the magnetic force of the magnet block; a second elastic telescopic rod, fixedly connected to the shell, the telescopic end of the second elastic telescopic rod is fixedly connected to a second limit piece, a fourth extrusion piece is slidably connected to the shell, the fourth extrusion piece is used to squeeze the second limit piece to move, the second limit piece is used to limit the sliding ring, the fourth extrusion piece is fixedly connected to a magnetic suction block, and the electromagnet and the magnetic suction block are magnetically attracted to each other.

[0012] Further description, it also includes: a partition mechanism, which is arranged in the outer shell and is used to isolate the connection between the connecting member and the wiring terminal, and the partition mechanism includes: a first hydraulic telescopic rod, which is fixed in the outer shell, and the telescopic end of the first hydraulic telescopic rod is fixed to the magnet block; a second hydraulic telescopic rod, which is fixed to the connecting member, and the connecting member is slidably connected with an insulating member, and the telescopic end of the second hydraulic telescopic rod is fixed to the insulating member, and the first hydraulic telescopic rod is fixed and connected with an oil inlet pipe and an oil return pipe, and the oil inlet pipe and the oil return pipe are both connected to the second hydraulic telescopic rod.

[0013] Further description: a one-way valve is installed in each of the oil inlet pipe and the oil return pipe, and the inner diameter of the oil inlet pipe is larger than the inner diameter of the oil return pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when a short circuit or leakage fault occurs in the circuit, the present invention does not need to additionally overcome the tension of the tension spring on the rotating ring. The tension spring on the rotating ring directly pulls the first connecting ring and the second connecting ring to move out of the self-locking position along the first slide groove and the second slide groove respectively, thereby releasing the self-locking state of the toggle switch, the connecting piece and the rotating lever, disconnecting the circuit, and increasing the sensitivity of the device.

[0015] The present invention delays the speed at which the magnet block returns to its original position, and a certain period of time is required after the device trips before the circuit can be reconnected, thereby preventing the user from repeatedly connecting the circuit within a short period of time without troubleshooting when a household circuit fails, thereby damaging the household circuit.

[0016] The present invention separates the process of resetting the first connecting ring and the second connecting ring from the process of resetting the two limit plates, so that after the device trips, even if a hard object is used to support the toggle switch so that the toggle switch is always in the self-locking position, the circuit of the device will not automatically reset to the connected position, thereby reducing the possibility of electrical fires caused by lack of common sense in using electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 is a cross-sectional view of the housing of the present invention;

[0019] Figure 3 An exploded view of the connecting member, the rotating lever and the first connecting ring of the present invention;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the housing, the toggle switch and the rotating lever of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the toggle switch, the first connecting ring and the limit plate of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the housing, the first connecting ring and the second connecting ring of the present invention;

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the connecting piece, the rotating lever and the wiring terminal of the present invention;

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the housing, spiral coil and magnet block of the present invention;

[0025] Fig. 9 is a cross-sectional view of the housing, magnet block and sliding ring of the present invention;

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the induction coil, the electromagnet and the fourth extrusion member of the present invention;

[0027] Fig.11 It is a schematic diagram of the three-dimensional structure of the second limiting member and the fourth extrusion member of the present invention;

[0028] Fig.12 It is a schematic diagram of the three-dimensional structure of the second hydraulic telescopic rod and the insulating member of the present invention.

[0029] Markings in the accompanying drawings: 1: housing, 2: toggle switch, 201: first slide slot, 3: connecting piece, 301: second slide slot, 4: rotating lever, 5: first connecting ring, 6: second connecting ring, 7: wiring terminal, 8: rotating ring, 9: limiting plate, 10: first extrusion block, 11: second extrusion block, 12: sliding plate, 13: third extrusion block, 14: first traction rope, 15: second traction rope, 16: spiral coil, 17: magnet block, 18: sliding ring, 19: first elastic telescopic rod, 20: first limiting piece, 21: elastic limiting piece, 22: induction coil, 23: electromagnet, 24: second elastic telescopic rod, 25: second limiting piece, 26: fourth extrusion piece, 27: magnetic suction block, 28: first hydraulic telescopic rod, 29: second hydraulic telescopic rod, 30: insulating piece, 31: oil inlet pipe, 32: oil return pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] An air switch with leakage protection structure for household appliances, reference Figure 1-Figure 7As shown, it includes: a housing 1, a toggle switch 2, a connecting member 3 and a rotating lever 4 are rotatably connected in the housing 1, a toggle spring is installed between the toggle switch 2 and the housing 1, the toggle switch 2 is provided with a first slide groove 201, and the connecting member 3 is provided with a second slide groove 301; a first connecting ring 5 is slidably connected in the first slide groove 201; a second connecting ring 6 is slidably connected in the second slide groove 301, and the first connecting ring 5 and the second connecting ring 6 are both slidably connected to the rotating lever 4; a wiring terminal 7 is fixed in the housing 1 and connected to the connecting terminal 7. The connecting piece 3 is electrically connected; the rotating ring 8 is rotatably connected in the outer shell 1, and a tension spring is installed between the rotating ring 8 and the rotating lever 4; there are two limit plates 9, which are respectively slidably connected in the first slide groove 201 and the second slide groove 301, and the two limit plates 9 are respectively used to limit the first connecting ring 5 and the second connecting ring 6 to the self-locking position; a force storage mechanism is arranged in the outer shell 1, and is used to apply pressure to the connecting piece 3; a trigger mechanism is arranged in the outer shell 1, and is used to control the movement of the two limit plates 9 when a short circuit or leakage occurs in the circuit.

[0032] For further explanation, see Figure 5 and Figure 7 As shown, when the first connecting ring 5 and the second connecting ring 6 are in the self-locking position, the angle between the plane where the first connecting ring 5 is located and the plane where the first slide groove 201 is located is greater than 60° and less than 85°, and the angle between the plane where the second connecting ring 6 is located and the plane where the second slide groove 301 is located is greater than 60° and less than 85°.

[0033] In the above scheme, in the initial state, the handle of the toggle switch 2 is located at its lower side, the tension spring on the rotating ring 8 is in an unstretched state, the connection between the connecting piece 3 and the terminal 7 is disconnected, the first connecting ring 5 and the second connecting ring 6 are both limited by the adjacent limiting plates 9, the first connecting ring 5 is located at the lower side of the first slide groove 201, and the second connecting ring 6 is located at the upper side of the second slide groove 301. There is still a design of a self-locking position similar to that in the existing device between the toggle switch 2, the connecting piece 3, the rotating lever 4, the first connecting ring 5 and the second connecting ring 6. In this scheme, when the staff rotates the toggle switch 2 counterclockwise to the extreme position (from the front to the back view), the toggle switch 2, the connecting piece 3, the rotating lever 4, the first connecting ring 5 and the second connecting ring 6 are in the self-locking position (reference Figure 2As shown, the circuit is in a connected state), at this time, the first connecting ring 5 is located on the right side of the line between the connection between the first connecting ring 5 and the rotating lever 4 and the rotation center of the toggle switch 2, and the second connecting ring 6 is located on the upper side of the line between the connection between the second connecting ring 6 and the rotating lever 4 and the rotation center of the connecting member 3. The tension spring on the rotating ring 8 is in a stretched and force-accumulated state. When the rotating lever 4 needs to be rotated counterclockwise to reset, the rotating lever 4 can only continue to push the toggle switch 2 to rotate counterclockwise through the first connecting ring 5, and push the connecting member 3 to rotate counterclockwise through the second connecting ring 6. At this time, because the toggle switch 2 and the connecting member 3 are both rotated to the extreme position (the connecting member 3 abuts against the terminal 7 and cannot rotate), the rotating lever 4 cannot rotate and reset by itself.

[0034] In the above scheme, the tension spring on the rotating ring 8 is the main power for pulling the rotating lever 4 to rotate; the first slide groove 201 and the second slide groove 301 are both inclined grooves. In the initial state, the first connecting ring 5 and the second connecting ring 6 are both limited by the adjacent limiting plates 9, so the first connecting ring 5 cannot slide along the first slide groove 201, and the second connecting ring 6 cannot slide along the second slide groove 301; when the user rotates the first connecting ring 5 and the second connecting ring 6 to the self-locking position, the left part of the first slide groove 201 is located on the left side of the line between the connection between the first connecting ring 5 and the rotating lever 4 and the rotation center of the toggle switch 2, and the lower part of the second slide groove 301 is located on the lower side of the line between the connection between the second connecting ring 6 and the rotating lever 4 and the rotation center of the connecting member 3; when the first connecting ring 5 and the second connecting ring 6 are in the self-locking position, the angle between the plane where the first connecting ring 5 is located and the plane where the first slide groove 201 is located is limited. When the angle between the planes is the largest, the two limit plates 9 release the limit on the first connecting ring 5 and the second connecting ring 6, and the first connecting ring 5 and the second connecting ring 6 slide smoothly along the first slide groove 201 and the second slide groove 301 under the push of the rotating lever 4. At the same time, by limiting the angle between the plane where the first connecting ring 5 is located and the plane where the first slide groove 201 is located and the angle between the plane where the second connecting ring 6 is located and the plane where the second slide groove 301 is located to the minimum angle, the length of the first slide groove 201 and the second slide groove 301 is limited to ensure that before the elastic force stored in the tension spring on the rotating ring 8 is exhausted, the first connecting ring 5 and the second connecting ring 6 move out of their respective self-locking positions, so that the device successfully trips. A thermal release is arranged in the housing 1. The thermal release is an existing mechanism. The thermal release determines whether the circuit is in an overload state by detecting the heat generated by the current in the circuit. In the overload state, the moving contact and the static contact of the thermal release are directly forced to separate to cut off the circuit.

[0035] The working process is as follows: when the user connects the household circuit, the user manually pushes the toggle switch 2 upwards, the toggle switch 2 rotates counterclockwise (the following is from the perspective of front to back), and drives the rotating lever 4 to rotate clockwise through the first connecting ring 5, the torsion spring on the toggle switch 2 twists and accumulates force, the rotating lever 4 drives the tension spring on the rotating ring 8 to stretch and accumulate force, the force storage mechanism accumulates force, and the rotating lever 4 synchronously drives the connecting member 3 to rotate counterclockwise through the second connecting ring 6. When the toggle switch 2 is pushed to the extreme position, the toggle switch 2, the connecting member 3, the rotating lever 4, the first connecting ring 5 and the second connecting ring 6 all enter the self-locking position, the tension spring on the rotating ring 8 stops stretching and accumulating force, and the rotating lever 4 is acted upon by the tension spring on the rotating ring 8 to apply a counterclockwise rotation force to the toggle switch 2, thereby keeping the toggle switch 2 in the self-locking position at all times. At this time, the connecting member 3 is in contact with and connected to the wiring terminal 7, and the user's household circuit is energized.

[0036] When an electrical fault such as a short circuit or leakage occurs in the user's home, an abnormal current appears in the user's home circuit, and the abnormal current activates the trigger mechanism. The trigger mechanism controls the two limit plates 9 to release the limit on the first connecting ring 5 and the second connecting ring 6. At this time, the rotating lever 4 rotates counterclockwise to reset under the action of the tension spring on the rotating ring 8, and the rotating lever 4 drives the first connecting ring 5 and the second connecting ring 6 to move together. The first connecting ring 5 and the second connecting ring 6 move out of the self-locking position along the first slide groove 201 and the second slide groove 301 respectively (the first connecting ring 5 gradually moves to the left side of the first slide groove 201, and the second connecting ring 6 gradually moves to the lower side of the second slide groove 301). At this time, the toggle switch 2, the connecting piece 3, the rotating lever 4, the first connecting ring 5 and the second connecting ring 6 no longer maintain the self-locking state. The rotating lever 4 drives the first connecting ring 5 and the second connecting ring 6 to move and reset under the action of the tension spring on the rotating ring 8, and the torsion spring on the toggle switch 2 drives the toggle switch 2 to rotate and reset. The connecting ring 6 and the force storage mechanism drive the connecting piece 3 to rotate clockwise to reset, and the connecting piece 3 is disconnected from the terminal 7, and the device trips. The force storage mechanism squeezes the first connecting ring 5 and the second connecting ring 6 to slide and reset along the first slide groove 201 and the second slide groove 301 respectively, until the toggle switch 2, the connecting piece 3, the rotating lever 4, the first connecting ring 5 and the second connecting ring 6 are all reset to the initial state, and the two limit plates 9 are driven by the trigger mechanism to re-lock the first connecting ring 5 and the second connecting ring 6. Because when the device controls the connecting piece 3 to disconnect from the terminal 7, the trigger mechanism only needs to release the limit on the first connecting ring 5 and the second connecting ring 6. The first connecting ring 5 and the second connecting ring 6 move out of the self-locking position under the action of the tension spring on the rotating ring 8, and the adhesion force between the connecting piece 3 and the terminal 7 is directly overcome by the tension spring on the rotating ring 8, without the need to additionally overcome the elastic force of the tension spring on the rotating ring 8, thereby increasing the sensitivity of the device.

[0037] For further explanation, see Figure 2-Figure 4As shown, the force storage mechanism includes: a sliding plate 12, which is slidably connected to the second connecting ring 6, a first spring is installed between the sliding plate 12 and the second connecting ring 6, a third extrusion block 13 is fixedly connected to the outer shell 1, and the third extrusion block 13 is used to squeeze the sliding plate 12 to move; a reset component is arranged in the outer shell 1, and is used to automatically reset the first connecting ring 5 and the second connecting ring 6.

[0038] For further explanation, see Figure 2 and Figure 6 As shown, the reset component includes: a first extrusion block 10, fixedly connected to the housing 1, used to squeeze the first connecting ring 5 to move and reset; a second extrusion block 11, fixedly connected to the housing 1, used to squeeze the second connecting ring 6 to move and reset.

[0039] In the above scheme, the sliding plate 12 pushes the second connecting ring 6 through the first spring thereon, so that the second connecting ring 6 applies an additional counterclockwise rotation force to the connecting member 3 when in the self-locking position, thereby increasing the extrusion force between the connecting member 3 and the terminal 7, and increasing the stability of the electrical connection between the two; in this scheme, the first extrusion block 10 and the second extrusion block 11 are both set to two, and the two first extrusion blocks 10 are both used to synchronously squeeze the first connecting ring 5 when the toggle switch 2 is rotated and reset, so that the first connecting ring 5 slides and resets to the lower side of the first slide groove 201 along the first slide groove 201, and the two second extrusion blocks 11 are both used to synchronously squeeze the second connecting ring 6 when the connecting member 3 is rotated and reset, so that the second connecting ring 6 slides and resets to the upper side of the second slide groove 301 along the second slide groove 301.

[0040] The working process is as follows: when the user pushes the toggle switch 2 to rotate counterclockwise, the rotating lever 4 drives the second connecting ring 6 to move when it rotates clockwise, and the sliding plate 12 follows the second connecting ring 6 to move slowly downward, and the sliding plate 12 is squeezed by the third squeezing block 13 and moves slowly to the left, and the sliding plate 12 applies a leftward force to the second connecting ring 6 through the first spring thereon. When the toggle switch 2 is rotated to the self-locking position, the first spring on the sliding plate 12 stops compressing and accumulating force, and the first spring on the sliding plate 12 applies a counterclockwise rotation force to the connector 3 through the second connecting ring 6, thereby increasing the squeezing force between the connector 3 and the terminal 7, and increasing the stability of the electrical connection between the two.

[0041] When an electrical failure occurs and the first connecting ring 5 and the second connecting ring 6 move out of the self-locking position, the toggle switch 2 is driven by the torsion spring thereon to rotate clockwise to reset, and the first spring on the sliding plate 12 pushes the second connecting ring 6 to move to the left, causing the second connecting ring 6 to quickly slide downward along the second slide groove 301. Under the action of the first spring on the sliding plate 12, the second connecting ring 6 applies a clockwise rotation force to the connecting member 3. The first spring on the sliding plate 12 assists the tension spring on the rotating ring 8 to overcome the adhesion between the connecting member 3 and the terminal 7, thereby increasing the response speed of the device. When the connecting member 3 and the terminal 7 are out of contact, the second connecting ring 6 gradually moves upward following the rotating lever 4, and the sliding plate 12 gradually moves upward relative to the third extrusion block 13, causing the first spring on the sliding plate 12 to gradually release to its initial state.

[0042] During the rotation and resetting process of the toggle switch 2 and the connecting member 3, the first connecting ring 5 and the second connecting ring 6 are respectively squeezed and moved by the first squeezing block 10 and the second squeezing block 11 to reset, and the two limit plates 9 re-lock the first connecting ring 5 and the second connecting ring 6 under the drive of the trigger mechanism.

[0043] For further explanation, see Figure 2 , Figure 4-Figure 9 As shown, the trigger mechanism includes: a first traction rope 14, fixedly connected to a limit plate 9 on the toggle switch 2, and the housing 1 and the toggle switch 2 are both slidably connected to the first traction rope 14; a second traction rope 15, fixedly connected to the limit plate 9 on the connecting member 3, and the housing 1 and the connecting member 3 are both slidably connected to the second traction rope 15; a spiral coil 16, fixedly connected to the housing 1, the housing 1 is slidably connected to a magnet block 17, and a second spring is installed between the two, there is damping between the housing 1 and the magnet block 17, and the magnet block 17 is located in the spiral coil 16; a sliding ring 18, slidably connected to the magnet block 17, and the first traction rope 14 and the second traction rope 15 are both fixedly connected to the sliding ring 18; a limiting component, arranged in the housing 1, used to prevent the sliding ring 18 from resetting immediately after tripping; a leakage protection component, arranged in the housing 1, used to push the magnet block 17 to move when leakage occurs.

[0044] For further explanation, see Figure 8 and Fig. 9 As shown, the limiting component includes: a first elastic telescopic rod 19, fixedly connected to the outer shell 1; a first limiting member 20, fixedly connected to the telescopic end of the first elastic telescopic rod 19, the first limiting member 20 is used to limit the sliding ring 18, and the magnet block 17 squeezes the first limiting member 20; an elastic limiting member 21, fixedly connected to the outer shell 1, the elastic limiting member 21 is used to limit the sliding ring 18, and a third spring is installed between the sliding ring 18 and the magnet block 17.

[0045] For further explanation, see Figure 5 and Figure 7As shown, the limit plate 9 is provided with an inclined surface, and the inclined surfaces of the two limit plates 9 are respectively located on the side away from the adjacent first connecting ring 5 and the side away from the adjacent second connecting ring 6. The first connecting ring 5 and the second connecting ring 6 are respectively reset by squeezing the inclined surfaces of the adjacent limit plates 9, and a fourth spring is installed between the toggle switch 2 and the connecting member 3 and the adjacent limit plates 9.

[0046] In the above scheme, the first traction rope 14 passes through the toggle switch 2 and is located on the rotation axis of the toggle switch 2, and the second traction rope 15 passes through the connecting member 3 and is located on the rotation axis of the connecting member 3, so as to avoid the first traction rope 14 and the second traction rope 15 being subjected to additional tension when the toggle switch 2 and the connecting member 3 rotate; the magnet block 17 is initially located on the upper part of the spiral coil 16, and the magnet block 17 is not completely located in the spiral coil 16. When the spiral coil 16 is powered normally, the magnetic field generated by the spiral coil 16 will exert a downward force on the magnet block 17, but at this time the magnetic force on the magnet block 17 is small, and the magnet block 17 will not be greatly moved due to the damping between the magnet block 17 and the housing 1 and the action of the second spring on the magnet block 17. The damping between the housing 1 and the magnet block 17 can be friction damping or hydraulic damping (using existing dampers and other devices), which is used to slow down the speed at which the magnet block 17 is reset upward, so as to prevent the user from repeatedly connecting the circuit in a short period of time without troubleshooting when a household circuit fails, thereby damaging the household circuit; the elastic limiter 21 is composed of a limiter ball, a limiter shell and a spring. The elastic limiter 21 limits the sliding ring 18 through its upper limiter ball, so that the state of the sliding ring 18 is more stable, and the sliding ring 18 will not move up and down at will, causing the device to be triggered incorrectly; the initial state of the first elastic telescopic rod 19 is a stored force state; the elastic force of the third spring on the magnet block 17 is greater than the elastic force of the spring in the first elastic telescopic rod 19.

[0047] The working process is as follows: when a short circuit occurs in the user's home, an abnormal current appears in the user's home circuit, and the abnormal current enters the spiral coil 16, causing the spiral coil 16 to generate an abnormal increase in magnetic force, and the magnet block 17 moves downward under the magnetic force of the spiral coil 16, and the second spring on the magnet block 17 is compressed and stores force. At this time, the sliding ring 18 is always in a stable state (not moving up and down) under the action of the elastic limiter 21, and the third spring on the magnet block 17 is stretched and stores force. The magnet block 17 is separated from the contact with the first limiter 20 during the downward movement, and the first limiter 20 extends to the left under the action of the elastic force of the first elastic telescopic rod 19. When the magnet block 17 moves downward to a certain distance (that is, when the current in the spiral coil 16 increases to a certain level, in order to ensure the safety of the household circuit under this current, the circuit needs to be powered off, and the specific current value is usually set by the air switch when it leaves the factory), the pulling force of the third spring on the magnet block 17 increases to be greater than the force of the elastic limiter 21 limiting the sliding ring 18, and the elastic limiter 2 1 releases the limit of the sliding ring 18, the third spring on the magnet block 17 pulls the sliding ring 18 to move downward quickly, the sliding ring 18 quickly pulls the two limit plates 9 to move through the first traction rope 14 and the second traction rope 15, the fourth springs on the two limit plates 9 are compressed and stored, the two limit plates 9 release the limit of the first connecting ring 5 and the second connecting ring 6 respectively, so that the connection piece 3 and the wiring terminal 7 are disconnected according to the same principle as above, and the sliding ring 18 gradually contacts the first limit piece 20 during the downward movement, and squeezes the fourth springs on the two limit plates 9. A limit piece 20 moves to the right, and the telescopic end of the first elastic telescopic rod 19 retracts to accumulate force until the sliding ring 18 moves to the middle of the first limit piece 20. The first limit piece 20 extends to the left again under the elastic force of the first elastic telescopic rod 19, and the first limit piece 20 limits the sliding ring 18. When a leakage occurs in the user's home, the leakage protection component senses the leakage in the circuit and also controls the magnet block 17 to move downward, so that the magnet block 17 disconnects the connection between the connector 3 and the terminal 7 according to the same principle as above.

[0048] When the connector 3 is disconnected from the terminal 7, the magnetic force of the spiral coil 16 disappears, and the magnet block 17 slowly moves upward and resets under the action of the second spring thereon and the damping between the housing 1 and the magnet block 17. The third spring on the magnet block 17 is gradually compressed and stored until the magnet block 17 contacts the first limit member 20. The magnet block 17 squeezes the first limit member 20 to move to the right, and the first limit member 20 is reset to the initial state. The telescopic end of the first elastic telescopic rod 19 is restored to the stored force state, and the first limit member 20 releases the limit on the sliding ring 18. The sliding ring 18 moves upward and resets under the action of the third spring on the magnet block 17 until the sliding ring 18 is limited by the elastic limit member 21 again. At this time, the sliding ring 18 no longer drags the first traction rope 14 and the second traction rope 15, and the two limit plates 9 move and reset under the action of their respective fourth springs.

[0049] When the user lacks common sense in electricity use, after the device trips, the user uses a hard object to support the toggle switch 2, so that the toggle switch 2 is always in the self-locking position. At this time, since the magnet block 17 resets slowly, the sliding ring 18 resets slowly. When the sliding ring 18 is not reset, the two limit plates 9 cannot be reset either. Therefore, even if the first connecting ring 5 and the second connecting ring 6 are respectively reset by the first extrusion block 10 and the second extrusion block 11, when the user turns the toggle switch 2, the first connecting ring 5 and the second connecting ring 6 will still be in a state of being out of the self-locking position. At this time, there is always a certain distance between the connecting piece 3 and the terminal 7, so the circuit cannot be connected at all, avoiding electrical accidents caused by users' lack of common sense in electricity use.

[0050] When the toggle switch 2 is located in the self-locking position, the first connecting ring 5 and the second connecting ring 6 are not completely reset, and the sliding ring 18 gradually returns to its initial position, when the user needs to turn on the circuit after repairing the circuit, the user first slides the toggle switch 2 downward to the initial state. When the toggle switch 2 is reset to the initial state, the first extrusion block 10 and the second extrusion block 11 respectively squeeze the first connecting ring 5 and the second connecting ring 6 to reset according to the above principle. Even if the two limit plates 9 have been reset, the first connecting ring 5 and the second connecting ring 6 can still pass through the limit plates 9 by squeezing the inclined surfaces of the adjacent limit plates 9, so that the first connecting ring 5 and the second connecting ring 6 are restored to the state of being limited by the adjacent limit plates 9.

[0051] For further explanation, see Fig.10 and Fig.11 As shown, the leakage protection component includes: an induction coil 22, which is fixedly connected to the shell 1, and an equal number of neutral wires and live wires pass through the induction coil 22 at the same time; an electromagnet 23, which is fixedly connected to the shell 1, and the electromagnet 23 is located on the upper side of the magnet block 17, and the magnetic force of the electromagnet 23 is opposite to the magnetic force of the magnet block 17; a second elastic telescopic rod 24, which is fixedly connected to the shell 1, and the telescopic end of the second elastic telescopic rod 24 is fixedly connected to the second limit piece 25, and a fourth extrusion piece 26 is slidably connected in the shell 1, and the fourth extrusion piece 26 is used to squeeze the second limit piece 25 to move, and the second limit piece 25 is used to limit the sliding ring 18, and the fourth extrusion piece 26 is fixedly connected to the magnetic suction block 27, and the electromagnet 23 and the magnetic suction block 27 are magnetically attracted to each other.

[0052] In the above scheme, the magnetic force generated by the electromagnet 23 is greater than the magnetic force generated by the spiral coil 16 to ensure that once the electromagnet 23 is connected, the magnetic field generated by the electromagnet 23 and the magnetic field generated by the magnet block 17 are in opposite directions, and the magnetic forces of the two repel each other, so that the magnet block 17 can be pushed to the lowermost side of its stroke, and the initial state of the second elastic telescopic rod 24 is a stored force state; the induction coil 22 and the electromagnet 23 are existing devices, and the two are connected to the leakage sensing chip (existing device). The induction coil 22, the electromagnet 23 and the leakage sensing chip adopt the same principle as the existing ones to detect whether the circuit has leakage. The principle is as follows: the induction coil 22 determines whether there is electricity leaked out of the circuit by detecting the magnitude of the current passing through the neutral line and the live line. When the current in the neutral line and the live line is inconsistent, it means that leakage has occurred, and the induction coil 22 generates a microcurrent. After the leakage sensing chip detects the microcurrent, it directly connects the electromagnet 23 with the live line, and then generates additional action through the electromagnet 23 to trip the air switch.

[0053] The working process is as follows: when leakage occurs in the circuit, when the induction coil 22 detects that the current in the neutral line and the live line are inconsistent, the leakage sensing chip activates the electromagnet 23 according to the above principle, and after the electromagnet 23 is activated, it pushes the magnet block 17 to move downward quickly, and the magnet block 17 controls the device to trip according to the same process as above, and the electromagnet 23 synchronously attracts the magnetic block 27 to move upward, and the magnetic block 27 drives the fourth extrusion member 26 to move upward, and the fourth extrusion member 26 releases the limit on the second limit member 25 and moves to a position protruding from the housing 1, and the second limit member 25 is elastically moved by the second elastic telescopic rod 24. The second limit member 25 extends to the right under the action of force, and limits the sliding ring 18 in the same way as the first limit member 20. Because electrical leakage is a serious electrical fault, the second limit member 25 cannot be automatically reset, that is, the circuit cannot automatically restore to its initial state. The user can only manually press the fourth extrusion member 26 downward after the user has repaired the circuit. The fourth extrusion member 26 squeezes the second limit member 25 to the left and moves it to reset, thereby releasing the second limit member 25 from limiting the sliding ring 18, and the sliding ring 18 and the two limit plates 9 can move and reset according to the same steps as above.

[0054] For further explanation, see Fig.10 and Fig.12 As shown, it also includes: a partition mechanism, which is arranged in the shell 1 and is used to isolate the connection between the connecting member 3 and the wiring terminal 7. The partition mechanism includes: a first hydraulic telescopic rod 28, which is fixed in the shell 1, and the telescopic end of the first hydraulic telescopic rod 28 is fixed to the magnet block 17; a second hydraulic telescopic rod 29, which is fixed to the connecting member 3, and the connecting member 3 is slidably connected with an insulating member 30, and the telescopic end of the second hydraulic telescopic rod 29 is fixed to the insulating member 30, and the first hydraulic telescopic rod 28 is fixedly connected and connected with an oil inlet pipe 31 and an oil return pipe 32, and the oil inlet pipe 31 and the oil return pipe 32 are both connected to the second hydraulic telescopic rod 29.

[0055] For further explanation, see Fig.12 As shown, one-way valves are installed in both the oil inlet pipe 31 and the oil return pipe 32 , and the inner diameter of the oil inlet pipe 31 is larger than the inner diameter of the oil return pipe 32 .

[0056] In the above scheme, the one-way valve in the oil inlet pipe 31 only allows the hydraulic oil in the first hydraulic telescopic rod 28 to flow into the second hydraulic telescopic rod 29, and the one-way valve in the oil return pipe 32 only allows the hydraulic oil in the second hydraulic telescopic rod 29 to flow into the first hydraulic telescopic rod 28. In the above scheme, the magnet block 17 no longer relies on the damping between the magnet block 17 and the outer casing 1 to delay the reset speed of the magnet block 17, but relies on the resistance of the hydraulic oil passing through the oil return pipe 32 to delay the reset speed of the magnet block 17.

[0057] The working process is as follows: when an electrical failure occurs in the user's home, the magnet block 17 moves downward, and the magnet block 17 drives the telescopic end of the first hydraulic telescopic rod 28 to retract downward. The hydraulic oil in the first hydraulic telescopic rod 28 flows back to the second hydraulic telescopic rod 29 through the oil inlet pipe 31, and the telescopic end of the second hydraulic telescopic rod 29 drives the insulating member 30 to extend to the right, and the insulating member 30 moves between the connecting member 3 and the wiring terminal 7, reducing the probability of arcing between the connecting member 3 and the wiring terminal 7. When the magnet block 17 moves upward to reset, the magnet block 17 drives the telescopic end of the first hydraulic telescopic rod 28 to extend upward, and the first hydraulic telescopic rod 28 extracts the hydraulic oil in the second hydraulic telescopic rod 29 through the return oil pipe 32, so that the telescopic end of the second hydraulic telescopic rod 29 retracts to the left and resets. At this time, due to the small inner diameter of the return oil pipe 32, the hydraulic oil flows slowly, and the reset speed of the magnet block 17 is slowed down.

[0058] It should be understood that the above description is only for exemplary purposes and is not intended to limit the present invention. A person skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An air switch with a leakage protection structure for household appliances, characterized in that: Included are: A housing (1), wherein a toggle switch (2), a connecting member (3) and a rotating lever (4) are rotatably connected inside the housing (1), a toggle spring is installed between the toggle switch (2) and the housing (1), the toggle switch (2) is provided with a first sliding groove (201), and the connecting member (3) is provided with a second sliding groove (301); A first connecting ring (5) slidably connected in the first sliding groove (201); A second connecting ring (6) is slidably connected in the second sliding groove (301), and the first connecting ring (5) and the second connecting ring (6) are both slidably connected to the rotating lever (4); A wiring terminal (7) is fixedly connected to the housing (1) and is electrically connected to the connecting member (3); A rotating ring (8) is rotatably connected to the housing (1), and a tension spring is installed between the rotating ring (8) and the rotating lever (4); There are two limit plates (9), which are respectively slidably connected in the first slide groove (201) and the second slide groove (301), and the two limit plates (9) are used to limit the first connecting ring (5) and the second connecting ring (6) to the self-locking position respectively; A force storage mechanism, arranged in the housing (1) and used for applying pressure to the connecting member (3); A trigger mechanism is arranged in the housing (1) and is used to control the movement of the two limit plates (9) when a short circuit or leakage occurs in the circuit.

2. The air switch with leakage protection structure for household appliances according to claim 1 is characterized in that: When the first connecting ring (5) and the second connecting ring (6) are in the self-locking position, the angle between the plane where the first connecting ring (5) is located and the plane where the first slide groove (201) is located is greater than 60° and less than 85°, and the angle between the plane where the second connecting ring (6) is located and the plane where the second slide groove (301) is located is greater than 60° and less than 85°.

3. The air switch with leakage protection structure for household appliances according to claim 1 is characterized in that: The power storage mechanism comprises: A sliding plate (12) is slidably connected to the second connecting ring (6), a first spring is installed between the sliding plate (12) and the second connecting ring (6), and a third extrusion block (13) is fixedly connected to the housing (1), and the third extrusion block (13) is used to squeeze the sliding plate (12) to move; A reset component is arranged in the housing (1) and is used to automatically reset the first connecting ring (5) and the second connecting ring (6).

4. The air switch with leakage protection structure for household appliances according to claim 3 is characterized in that: The reset component includes: A first extrusion block (10) is fixedly connected to the housing (1) and is used to squeeze the first connecting ring (5) to move and reset; The second extrusion block (11) is fixedly connected to the housing (1) and is used to squeeze the second connecting ring (6) to move and reset.

5. The air switch with leakage protection structure for household appliances according to claim 4 is characterized in that: The trigger mechanism comprises: A first traction rope (14) is fixedly connected to the limit plate (9) on the toggle switch (2), and the housing (1) and the toggle switch (2) are both slidably connected to the first traction rope (14); A second traction rope (15) is fixedly connected to the limiting plate (9) on the connecting member (3), and the housing (1) and the connecting member (3) are both slidably connected to the second traction rope (15); A spiral coil (16) is fixedly connected to the housing (1); the housing (1) is slidably connected to a magnet block (17), and a second spring is installed between the housing (1) and the magnet block (17); damping exists between the housing (1) and the magnet block (17); and the magnet block (17) is located inside the spiral coil (16); A sliding ring (18) is slidably connected to the magnet block (17), and the first traction rope (14) and the second traction rope (15) are both fixedly connected to the sliding ring (18); A limiting component, arranged in the housing (1), for preventing the sliding ring (18) from resetting immediately after tripping; A leakage protection component is arranged in the housing (1) and is used to push the magnet block (17) to move when leakage occurs.

6. The air switch with leakage protection structure for household appliances according to claim 5 is characterized in that: The limiting component includes: A first elastic telescopic rod (19) fixedly connected inside the housing (1); A first limiting member (20) is fixedly connected to the telescopic end of the first elastic telescopic rod (19), the first limiting member (20) is used to limit the sliding ring (18), and the magnet block (17) presses the first limiting member (20); An elastic limiting member (21) is fixedly connected inside the housing (1), and the elastic limiting member (21) is used to limit the sliding ring (18). A third spring is installed between the sliding ring (18) and the magnet block (17).

7. The air switch with leakage protection structure for household appliances according to claim 5 is characterized in that: The limit plate (9) is provided with an inclined surface, and the inclined surfaces of the two limit plates (9) are respectively located on a side away from the adjacent first connecting ring (5) and a side away from the adjacent second connecting ring (6). The first connecting ring (5) and the second connecting ring (6) are respectively reset by squeezing the inclined surfaces of the adjacent limit plates (9). A fourth spring is installed between the toggle switch (2) and the connecting member (3) and the adjacent limit plates (9).

8. The air switch with leakage protection structure for household appliances according to claim 6 is characterized in that: The leakage protection component includes: An induction coil (22) is fixedly connected to the housing (1), and an equal number of neutral wires and live wires pass through the induction coil (22); The electromagnet (23) is fixedly connected to the shell (1), the electromagnet (23) is located on the upper side of the magnet block (17), and the magnetic force of the electromagnet (23) is opposite to the magnetic force of the magnet block (17); the second elastic telescopic rod (24) is fixedly connected to the shell (1), the telescopic end of the second elastic telescopic rod (24) is fixedly connected to a second limiting member (25), and the shell (1) is slidably connected with a fourth extrusion member (26), the fourth extrusion member (26) is used to squeeze the second limiting member (25) to move, and the second limiting member (25) is used to limit the sliding ring (18), the fourth extrusion member (26) is fixedly connected to a magnetic attraction block (27), and the electromagnet (23) and the magnetic attraction block (27) are magnetically attracted to each other.

9. The air switch with leakage protection structure for household appliances according to claim 8 is characterized in that: Also included are: A partition mechanism is arranged in the housing (1) and is used to separate the connection between the connecting piece (3) and the wiring terminal (7). The partition mechanism comprises: A first hydraulic telescopic rod (28) is fixedly connected inside the housing (1), and a telescopic end of the first hydraulic telescopic rod (28) is fixedly connected to the magnet block (17); The second hydraulic telescopic rod (29) is fixedly connected to the connecting member (3), the connecting member (3) is slidably connected to an insulating member (30), the telescopic end of the second hydraulic telescopic rod (29) is fixedly connected to the insulating member (30), the first hydraulic telescopic rod (28) is fixedly connected to and connected to an oil inlet pipe (31) and an oil return pipe (32), and the oil inlet pipe (31) and the oil return pipe (32) are both connected to the second hydraulic telescopic rod (29).

10. The air switch with leakage protection structure for household appliances according to claim 9, characterized in that: One-way valves are installed in both the oil inlet pipe (31) and the oil return pipe (32), and the inner diameter of the oil inlet pipe (31) is larger than the inner diameter of the oil return pipe (32).

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