A switching device for a dual-power leakage protector

Abstract

The invention discloses an opening and closing device of a dual-power leakage protector, which relates to the technical field of electrical equipment protection, and comprises: two connecting devices, a spring pressure block, a synchronous pressure block, a spring and a protector bottom plate; the protector bottom plate is also provided with a wiring terminal; the spring pressure block is provided with a shaft sleeve rotation driving block, a vertical fork groove and a side pressure rod; the connecting device is provided with a connecting iron core extending laterally, and the connecting iron core is snap-fitted with the vertical fork groove; a synchronous pressure rod is provided at the bottom of the synchronous pressure block, and shaft sleeve rotation abutment blocks are provided on both sides of the synchronous pressure block, and the shaft sleeve rotation driving block on the spring pressure block is matched and abutted with the shaft sleeve rotation abutment block; the connecting iron core drives the spring pressure block to rotate through the vertical fork groove, so that the side pressure rod at the bottom of the spring pressure block presses the spring downward, and the rotation of the spring pressure block can drive the synchronous pressure block to rotate synchronously, so that the synchronous pressure rod presses the spring at the same time, so that the load is connected to the power supply, thereby achieving the effect of leakage protection for the double loads, and the overall structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment protection, in particular to an on-off device of a dual-power leakage protector. Background Art

[0002] When leakage fault occurs in the equipment or when protection is needed for people who are at risk of electric shock, leakage protector can disconnect the main line in time, thus it is widely used. The application technology of leakage protector is very mature. From the protection principle, there are voltage type and current type. From the mechanical structure, there are self-locking type and pull-in type. The leakage protector of mechanical self-locking structure type of current or voltage is usually used. The biggest feature of the mechanical self-locking structure is that when the power supply of the leakage protector in operation is interrupted or the power supply circuit is missing a phase or the line contact is poor, the mechanical self-locking structure of the leakage protector in the closed state will not be able to actively open the closed contacts. At this time, if the power supply circuit is abnormally missing a phase and the ground wire is abnormally energized or leaking, the leakage protector will lose its protective function, resulting in a safety accident; therefore, the application of the suction type is increasing, which can ensure the safety of electricity use; however, the design and use scenarios of the existing leakage protector equipment can only perform leakage protection on a single load, and cannot perform leakage protection on two loads separately; in response to the above problems, a new leakage protector is designed in the present invention that can perform leakage protection on two loads separately at the same time, especially when it is suitable for products such as electric water heaters, it can perform leakage protection on two electric heating tubes separately at the same time.

[0003] The electric control method used in existing dual-power electrical appliances is to achieve micro-disconnection of the circuit through a relay, but due to the relatively small opening distance, the safety is low. Therefore, a dual-power leakage protector device that can achieve a safe 3mm opening distance is needed to replace the above structure. Summary of the invention

[0004] In view of the above-mentioned defects existing in the prior art, the present invention provides a switching device of a dual-power leakage protector to solve the problem that the existing leakage protector cannot perform effective and safe leakage protection on dual loads respectively.

[0005] In order to solve the above technical problems, the present invention provides an on-off device of a dual-power leakage protector, comprising: two connecting devices, a spring pressing block, a synchronous pressing block, a spring and a protector bottom plate, wherein the synchronous pressing block is located between two spring pressing blocks arranged in parallel, and the two spring pressing blocks rotate coaxially with the synchronous pressing block;

[0006] A wiring terminal is also provided on the bottom plate of the protector, and the spring sheet pressing block is used to control the closing of the spring sheet and the wiring terminal; a shaft sleeve rotation driving block, a vertical fork groove and a side pressure rod are provided on the spring sheet pressing block; a connecting iron core extending laterally is provided on the connecting device, and the connecting iron core is engaged with the vertical fork groove, and the connecting device can drive the connecting iron core to move linearly; a synchronous pressure rod is provided at the bottom of the synchronous pressing block, and shaft sleeve rotation abutment blocks are provided on both sides of the synchronous pressing block, and the shaft sleeve rotation driving block on the spring sheet pressing block is engaged with the shaft sleeve rotation abutment block, and the spring sheet pressing block can drive the synchronous pressing block to rotate synchronously through the cooperation of the shaft sleeve rotation driving block and the shaft sleeve rotation abutment block;

[0007] When at least one connecting device is energized, the connecting iron core drives the spring sheet pressing block to rotate through the vertical fork groove, so that the side pressure rod at the bottom of the spring sheet pressing block presses the spring sheet downward. The rotation of the spring sheet pressing block can drive the synchronous pressure block to rotate synchronously, so that the synchronous pressure rod presses the spring sheet downward at the same time, so that the load is connected to the power supply, thereby achieving the effect of the dual-power leakage protector for dual loads at the same time. The overall structure is simple, which can effectively save costs, reduce the overall volume of the leakage protector, and make the protection effect stable and reliable.

[0008] The spring clip includes a first spring clip, a second spring clip, a third spring clip and a PE line spring clip, the first spring clip, the second spring clip, the third spring clip and the PE line spring clip are arranged on the bottom plate of the protector, the connection terminal includes a second pin, a first pin, a ground pin and an auxiliary connection pin, the auxiliary connection pin is electrically connected to the first pin, the first pin is connected to the live wire, and the second pin is connected to the neutral wire;

[0009] Electrical connection contacts are provided on the tops of the second pin, the first pin, the ground pin and the auxiliary connection pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet, the third spring sheet and the PE wire spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connection pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and a synchronous pressure rod can simultaneously press down the PE wire spring sheet to connect with the ground pin. By adopting the above technical scheme, the second pin and the ground pin are shared in the two groups of protection structures, which effectively simplifies the overall structure of the dual-power leakage protector of the present invention and has a better protection effect.

[0010] The spring clip includes a first spring clip, a second spring clip and a third spring clip; the first spring clip, the second spring clip and the third spring clip are arranged on the bottom plate of the protector, the connection terminal includes a second pin, a first pin, a ground pin and an auxiliary connection pin, the auxiliary connection pin is electrically connected to the first pin, the first pin is connected to the live wire, and the second pin is connected to the neutral wire;

[0011] Electrical connection contacts are provided on the tops of the second pin, the first pin and the auxiliary connecting pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet and the third spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connecting pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and the PE wire and the ground wire pin cannot be disconnected and must remain connected.

[0012] The spring sheet pressing block is movably hinged to a pin support arranged on the bottom plate of the protector through a rotating pin.

[0013] Among them, the spring piece pressure block includes an upper pressure block and a lower pressure block, a vertical fork groove is arranged on the upper pressure block, a side pressure rod is arranged on the lower pressure block, the upper pressure block and the lower pressure block are hinged by a rotating pin shaft, and a pressure block spring in a compressed state is arranged between the upper pressure block and the lower pressure block. When the side pressure rod and the spring piece are in abutment state, the elastic force of the pressure block spring can make the side pressure rod maintain a stable force on the spring piece, and the sleeve rotation driving block is arranged on the rotating sleeve of the upper part or the lower part of the pressure block. The semi-open sleeve rotation driving block and the corresponding sleeve rotation abutment block in the above technical scheme are arranged, so that when the spring piece pressure block rotates around the axis, the sleeve rotation driving block on the rotating sleeve can be pushed to rotate synchronously around the axis, that is, the synchronous pressure block is rotated, thereby realizing the downward pressing of the spring piece.

[0014] Among them, a hinge seat is provided at the hinged joint between the upper and lower parts of the pressure block, a rotating pin is passed through the hinge seat, and a limit block is also provided on the hinge seat, which is used to control the opening angle between the upper and lower parts of the pressure block when rotating with the rotating pin as the axis; spring grooves are provided at the positions where the pressure block springs are set corresponding to the upper and lower parts of the pressure block, and spring columns are also provided in the spring grooves, and the spring grooves and spring columns are used to install the pressure block springs, and the upper and lower parts of the pressure block are connected by the pressure block springs to form a spring sheet pressure block. The spring piece pressure block no longer relies solely on the fixed limiting mechanical structure to compress the spring piece. The pressure block spring can enable the side pressure rod and the synchronous pressure rod to apply a stable pressing force to the spring piece. After mechanical wear occurs due to long-term use, the elastic force of the pressure block spring can also increase the opening angle between the upper part of the pressure block and the lower part of the pressure block when rotating with the first pin shaft as the axis, thereby ensuring the pressing force of the side pressure rod and the synchronous pressure rod on the spring piece, so that the electrical connection in the dual-power new leakage protector is stable and reliable.

[0015] Wherein, a wedge-shaped buckle foot is provided at the bottom of the connecting device, and the connecting device is buckled and fixed to the bottom plate of the protector through the buckle foot.

[0016] The connecting device further comprises a connecting coil and a connecting spring. The connecting coil is fixed inside the connecting device. The connecting spring and the connecting iron core are horizontally arranged in the inner cavity of the connecting coil.

[0017] Among them, a pre-articulation device is provided on the articulated seat, and the pre-articulation device includes a boss and a clamping groove. The boss is located at the hinge of the upper part of the pressing block, and the clamping groove is located at the hinge of the lower part of the pressing block. The pre-articulation of the upper part and the lower part of the pressing block is achieved through the cooperation of the boss and the clamping groove.

[0018] Among them, a pre-articulation device is provided on the articulated seat, which includes a boss and a clamping groove. The clamping groove is located at the hinge of the upper part of the pressing block, and the boss is located at the hinge of the lower part of the pressing block. The pre-articulation of the upper part and the lower part of the pressing block is achieved through the cooperation of the boss and the clamping groove.

[0019] Wherein, spring grooves are provided at positions corresponding to the pressure block springs on the upper part and the lower part of the pressure block, and spring columns are also provided in the spring grooves. The spring grooves and the spring columns are used to install the pressure block springs.

[0020] Among them, an indicator block is also provided on the synchronous pressure block. The indicator block is located on the upper part of the synchronous pressure block. The color of the indicator block is red. During the rotation of the synchronous pressure block, the position of the indicator block will also change, thereby displaying the status of the leakage protector.

[0021] Among them, a protrusion is provided on the synchronous pressure rod corresponding to the PE line spring piece. When the synchronous pressure rod is pressed down, the protrusion makes the PE line spring piece connected with the corresponding pin before the first spring piece, the second spring piece and the third spring piece; when the side pressure rod is lifted, the protrusion makes the PE line spring piece disconnected from the corresponding pin after the first spring piece, the second spring piece and the third spring piece.

[0022] Wherein, the shaft sleeve rotation driving block and the shaft sleeve rotation abutment block are both open shaft sleeves.

[0023] The spring clip includes a first spring clip, a second spring clip, a third spring clip and a PE line spring clip, the first spring clip, the second spring clip, the third spring clip and the PE line spring clip are arranged on the bottom plate of the protector, the connection terminal includes a second pin, a first pin, a ground pin and an auxiliary connection pin, the auxiliary connection pin is electrically connected to the first pin, the first pin is connected to the neutral line, and the second pin is connected to the live line;

[0024] Electrical connection contacts are provided on the tops of the second pin, the first pin, the ground pin and the auxiliary connection pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet, the third spring sheet and the PE wire spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connection pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and a synchronous pressure rod can simultaneously press down the PE wire spring sheet to connect with the ground pin. By adopting the above technical scheme, the second pin and the ground pin are shared in the two groups of protection structures, which effectively simplifies the overall structure of the dual-power leakage protector of the present invention and has a better protection effect.

[0025] The spring clip includes a first spring clip, a second spring clip and a third spring clip; the first spring clip, the second spring clip and the third spring clip are arranged on the bottom plate of the protector, the connection terminal includes a second pin, a first pin, a ground pin and an auxiliary connection pin, the auxiliary connection pin is electrically connected to the first pin, the first pin is connected to the neutral line, and the second pin is connected to the live line;

[0026] Electrical connection contacts are provided on the tops of the second pin, the first pin and the auxiliary connecting pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet and the third spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connecting pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and the PE wire and the ground wire pin cannot be disconnected and must remain connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural diagram of a protector device of an opening and closing device of a dual-power leakage protector of the present invention;

[0028] Figure 2 An exploded view of the protector device of the switch device of the dual-power leakage protector of the present invention;

[0029] Figure 3 It is a structural diagram of the protector bottom plate and the spring piece of the opening and closing device of the dual-power leakage protector of the present invention;

[0030] Figure 4 It is a structural diagram of the connection terminals and spring pieces of the switch device of the dual-power leakage protector of the present invention;

[0031] Figure 5 It is a structural diagram of the spring piece pressing block of the opening and closing device of the dual-power leakage protector of the present invention;

[0032] Figure 6 The structure of the spring piece pressing block and the synchronous pressing block of the opening and closing device of the dual power leakage protector of the present invention Figure 1 ;

[0033] Figure 7 The structure of the spring piece pressing block and the synchronous pressing block of the opening and closing device of the dual power leakage protector of the present invention Figure 2 ;

[0034] Figure 8 The structure of the spring piece pressing block and the synchronous pressing block of the opening and closing device of the dual power leakage protector of the present invention Figure 3 ;

[0035] In the figure: 1 is a connecting device; 2 is a spring piece pressure block; 3 is a protector bottom plate; 4 is a sleeve rotation driving block; 5 is the upper part of the pressure block; 6 is the lower part of the pressure block; 7 is a vertical fork groove; 8 is a synchronous pressure block; 9 is a rotating pin; 10 is a pin support; 11 is a spring; 12 is a wiring terminal; 13 is a sleeve rotation abutment block; 14 is a synchronous pressure rod; 15 is an indicator block; 16 is a connecting iron core; 17 is a side pressure rod; 18 is a pressure block spring; 19 is a limit stopper; 20 is a buckle foot; 21 is a first spring piece; 22 is a second spring piece; 23 is a third spring piece; 24 is a PE line spring piece; 25 is a second pin; 26 is a first pin; 27 is a ground pin; 28 is an auxiliary connecting pin; 29 is an electrical connection contact; 30 is a spring piece contact; 31 is a connecting coil; 32 is a connecting spring; 33 is a boss; 34 is a clamping groove; 35 is a bump. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] Embodiment 1:

[0038] A switching device for a dual-power leakage protector according to an embodiment of the present invention, such as Figures 1 to 5 As shown, it includes: two connecting devices 1, a spring sheet pressing block 2, a synchronous pressing block 8, a spring sheet 11 and a protector bottom plate 3, the synchronous pressing block 8 is located between the two spring sheet pressing blocks 2 arranged in parallel, and the two spring sheet pressing blocks 2 rotate coaxially with the synchronous pressing block 8;

[0039] The protector bottom plate 3 is also provided with a terminal 12, and the spring block 2 is used to control the closing of the spring 11 and the terminal 12; the spring block 2 is provided with a sleeve rotation drive block 4, a vertical fork groove 7 and a side pressure rod 17; the connecting device 1 is provided with a connecting iron core 16 extending laterally, and the connecting iron core 16 is engaged with the vertical fork groove 7, and the connecting device 1 can drive the connecting iron core 16 to move linearly. Specifically, the connecting device 1 also includes a connecting coil 31 and a connecting spring 32. The connecting coil 31 is fixed inside the connecting device 1, and the connecting spring 32 and the connecting iron core 16 are connected in water. It is arranged flat in the inner cavity of the connecting coil 31, that is, the connecting coil 31 is energized to generate a magnetic field, so that the connecting iron core 16 is adsorbed and the connecting spring 32 is compressed at the same time, thereby realizing the clamping cooperation between the connecting iron core 16 and the vertical fork groove 7 to drive the spring piece pressing block 2 to rotate around the rotating pin 9, wherein the spring piece pressing block 2 is movably hinged with the pin support 10 arranged on the protector bottom plate 3 through the rotating pin 9, and a wedge-shaped buckle foot 20 is provided at the bottom of the connecting device 1, and the connecting device 1 is buckled and fixed with the protector bottom plate 3 through the buckle foot 20, so as to ensure convenient installation and firmness and reliability;

[0040] A synchronous pressure rod 14 is provided at the bottom of the synchronous pressure block 8, and shaft sleeve rotation abutment blocks 13 are provided on both sides of the synchronous pressure block 8. The shaft sleeve rotation drive block 4 on the spring piece pressure block 2 cooperates with the shaft sleeve rotation abutment block 13, and the spring piece pressure block 2 can drive the synchronous pressure block 8 to rotate synchronously through the cooperation of the shaft sleeve rotation drive block 4 and the shaft sleeve rotation abutment block 13; in this embodiment, the two spring piece pressure blocks 2 and the synchronous pressure block 8 between the two spring piece pressure blocks 2 are jointly arranged on the rotation pin 9, and can rotate around the rotation pin 9, and the spring piece pressure block 2 can be driven by the rotation pin 9. The synchronous pressure block 8 is driven to rotate by the connected iron core 16, and is driven by the spring piece pressure block 2 to rotate, that is, when the sleeve rotation driving block 4 rotates with the spring piece pressure block 2, the sleeve rotation driving block 4 located on the rotating sleeve of the spring piece pressure block 2 and the sleeve rotation abutment block 13 located on the rotating sleeve of the synchronous pressure block 8 are abutted and matched. The rotating sleeve is a structure in which the spring piece pressure block 2 is sleeved on the rotating pin shaft 9, so that when the side pressure rod 17 at the bottom of the spring piece pressure block 2 presses down the corresponding spring piece, the synchronous pressure rod 14 presses down the corresponding spring piece at the same time.

[0041] When at least one connecting device 1 is energized, the connecting iron core 16 drives the spring clamp 2 to rotate through the vertical fork groove 7, so that the side pressure rod 17 located at the bottom of the spring clamp 2 presses the spring 11 downward. The rotation of the spring clamp 2 can drive the synchronous pressure block 8 to rotate synchronously, so that the synchronous pressure rod 14 presses the spring 11 downward at the same time, so that the load is connected to the power supply.

[0042] The spring clip 11 includes a first spring clip 21, a second spring clip 22, a third spring clip 23 and a PE line spring clip 24, which are arranged on the protector bottom plate 3, and the terminal 12 includes a second pin 25, a first pin 26, a ground pin 27 and an auxiliary connection pin 28, the auxiliary connection pin 28 is electrically connected to the first pin 26, the first pin 26 is connected to the live wire, and the second pin 25 is connected to the neutral wire;

[0043] The second pin 25, the first pin 26, the ground pin 27 and the auxiliary connecting pin 28 are provided with an electrical connection contact 29 at the top, and the first spring sheet 21, the second spring sheet 22, the third spring sheet 23 and the PE line spring sheet 24 are provided with spring sheet contacts 30 corresponding to the electrical connection contact 29 at the ends. The pressure rod 17 on one side can be used to press down the first spring sheet 21 to connect with the first pin 26, and the pressure rod 17 on the other side can be used to press down the third spring sheet 23 to connect with the auxiliary connecting pin 28. The synchronous pressure rod 14 can be used to press down the second spring sheet 22 to connect with the second pin 25, and the synchronous pressure rod 14 can be used to press down the second spring sheet 22 to connect with the second pin 25. 14 can simultaneously press down the PE line spring piece 24 and connect with the ground line pin 27; further, in the specific implementation process, when only one of the connecting devices 1 is energized, only the spring piece pressing block 2 corresponding to the connecting device 1 remains in the pressed state, that is, the first spring piece 21 is connected with the first pin 26, or the third spring piece 23 is connected with the auxiliary connecting pin 28. Since the auxiliary connecting pin 28 is electrically connected with the first pin 26, and as long as one spring piece pressing block 2 remains in the pressed state, it will also drive the synchronous pressing block 8 to remain in the pressed state, that is, the second spring piece 22 is connected with the second pin. The pin 25 is connected, and the PE wire spring piece 24 is connected with the ground wire pin 27. Therefore, when any connecting device 1 is powered on, it can ensure that the leakage protector is in a power-on state and plays a protective role. When the two connecting devices 1 are powered on at the same time, the two loads in the circuit can be simultaneously protected from leakage, which is a further application of the opening and closing device of the dual-power leakage protector of this embodiment to this embodiment. For example, when the dual-power leakage protector corresponding to the opening and closing device of this embodiment is applied to a water heater, the two electric heating pipes can be controlled simultaneously to store water and heat the water heater. Specifically, an internal water storage tank and an external water outlet tank are provided in the water heater, and an electric heating pipe is provided for heating respectively. The internal water storage tank is heated to about 40°C by the electric heating pipe for insulation. When hot water is needed, the external water outlet tank can also be quickly heated to about 75°C. The above scheme can make the insulation effect better and the heat dissipation slower. Compared with insulation at a higher temperature, it has a better energy-saving effect. At the same time, the two electric heating pipes can be protected from leakage through the leakage protector of this embodiment.

[0044] A protrusion 35 is provided on the synchronous pressure rod 14 at the position corresponding to the PE line spring piece 24. When the synchronous pressure rod 14 is pressed down, the protrusion 35 makes the PE line spring piece 24 connected with the corresponding pin before the first spring piece 21, the second spring piece 22 and the third spring piece 23; when the side pressure rod 17 is lifted, the protrusion 35 makes the PE line spring piece 24 disconnected from the corresponding pin after the first spring piece 21, the second spring piece 22 and the third spring piece 23.

[0045] like Figure 6 , Figure 7 and Figure 8As shown, in the present embodiment, the shaft sleeve rotation driving block 4 and the shaft sleeve rotation abutment block 13 are both open shaft sleeves, and when the shaft sleeve rotation driving block 4 and the shaft sleeve rotation abutment block 13 cooperate, there is a reserved rotation space between the shaft sleeve rotation driving block 4 and the shaft sleeve rotation abutment block 13, that is, when the power of the connecting device 1 is turned on, the connecting iron core 16 drives the spring piece pressing block 2 to rotate through the vertical fork groove 7, and at the same time, through the cooperation and abutment between the upper part of the shaft sleeve rotation driving block 4 and the upper part of the shaft sleeve rotation abutment block 13, the synchronous pressing block 8 rotates at the same time to achieve the compression of the spring piece 11; when the spring piece pressing block 2 is no longer pressed down and rotates to reset, in this process, since there is a reserved rotation space between the shaft sleeve rotation driving block 4 and the shaft sleeve rotation abutment block 13, that is, there is a certain gap between the lower part of the shaft sleeve rotation driving block 4 and the lower part of the shaft sleeve rotation abutment block 13, the synchronous pressing block 8 can lag behind the rotation of the spring piece pressing block 2.

[0046] Embodiment 2:

[0047] Compared with the first embodiment, the spring 11 includes a first spring 21, a second spring 22 and a third spring 23; the first spring 21, the second spring 22 and the third spring 23 are arranged on the protector bottom plate 3, the connection terminal includes a second pin 25, a first pin 26, a ground pin 27 and an auxiliary connection pin 28, the auxiliary connection pin 28 is electrically connected to the first pin 26, the first pin 26 is connected to the live wire, and the second pin 25 is connected to the neutral wire;

[0048] Electrical connection contacts 29 are provided on the tops of the second pin 25, the first pin 26 and the auxiliary connecting pin 28. Spring contacts 30 corresponding to the electrical connection contacts 29 are provided at the ends of the first spring sheet 21, the second spring sheet 22 and the third spring sheet 23. The pressure rod 17 on one side can be used to press down the first spring sheet 21 to connect with the first pin 26, and the pressure rod 17 on the other side can be used to press down the third spring sheet 23 to connect with the auxiliary connecting pin 28. The synchronous pressure rod 14 can be used to press down the second spring sheet 22 to connect with the second pin 25. The PE line and the ground pin 27 cannot be disconnected and remain connected. In this embodiment, the setting of the PE line spring sheet 24 is removed, and the ground pin 27 is connected with the PE line through a wire, so that the PE line remains in a continuously connected state.

[0049] Embodiment 3:

[0050] In this embodiment, the spring piece pressure block 2 includes a pressure block upper part 5 and a pressure block lower part 6, a vertical fork groove 7 is arranged on the pressure block upper part 5, a side pressure rod 17 is arranged on the pressure block lower part 6, the pressure block upper part 5 and the pressure block lower part 6 are hinged by a rotating pin shaft 9, and a pressure block spring 18 in a compressed state is arranged between the pressure block upper part 5 and the pressure block lower part 6. When the side pressure rod 17 and the spring piece 11 are in abutment state, the elastic force of the pressure block spring 18 can enable the side pressure rod 17 to maintain a stable force on the spring piece 11. According to the clamping method of the pressure block upper part 5 or the pressure block lower part 6, the sleeve rotation driving block 4 is arranged on the rotating sleeve of the pressure block upper part 5 or the pressure block lower part 6.

[0051] like Figure 5 and Figure 7 As shown, a hinge seat is provided at the hinged joint of the upper part 5 of the pressing block and the lower part 6 of the pressing block, and a rotating pin shaft 9 is passed through the hinge seat. A limit stop block 19 is also provided on the hinge seat. The limit stop block 19 is used to control the opening angle between the upper part 5 of the pressing block and the lower part 6 of the pressing block when they rotate with the rotating pin shaft 9 as the axis; that is, the rotation angle of the upper part 5 of the pressing block and the lower part 6 of the pressing block around the rotating pin shaft 9 is limited within a certain range. At the same time, this design can also ensure that the spring piece pressing block 2 will not automatically disintegrate after assembly due to the elastic force of the pressing block spring 18 after assembly is completed, that is, the upper part 5 of the pressing block and the lower part 6 of the pressing block can be limited.

[0052] Spring grooves are provided at positions corresponding to the pressure block spring 18 on the pressure block upper part 5 and the pressure block lower part 6, and spring columns are also provided in the spring grooves. The spring grooves and the spring columns are used to install the pressure block spring 18, and at the same time, it can also ensure that the pressure block spring 18 will not fall off, making the installation simpler and more convenient. Further, a spring column is provided in the spring grooves. The spring grooves and the spring columns are used to install the pressure block spring 18 to ensure the installation and fixing effect.

[0053] Embodiment 4:

[0054] In this embodiment, if Figure 5 As shown, a pre-articulation device is provided on the articulated seat, and the pre-articulation device includes a boss 33 and a clamping groove 34. The boss 33 is located at the hinge of the upper part 5 of the pressure block, and the clamping groove 34 is located at the hinge of the lower part 6 of the pressure block. Through the cooperation of the boss 33 and the clamping groove 34, the pre-articulation of the upper part 5 of the pressure block and the lower part 6 of the pressure block is achieved, that is, even if the rotating pin 9 is not installed, the installation of the spring piece pressure block 2 can be completed. At the same time, this design can further ensure the coaxiality of the upper part 5 of the pressure block and the lower part 6 of the pressure block, reduce wear, and make the overall installation simpler and more convenient.

[0055] Embodiment 5:

[0056] Compared with Example 4, in this embodiment, a pre-articulation device is provided on the articulated seat, and the pre-articulation device includes a boss 33 and a snap-in groove 34. The snap-in groove 34 is located at the hinge of the upper part 5 of the pressing block, and the boss 33 is located at the hinge of the lower part 6 of the pressing block. Through the cooperation of the boss 33 and the snap-in groove 34, the pre-articulation of the upper part 5 of the pressing block and the lower part 6 of the pressing block is achieved.

[0057] Embodiment 6:

[0058] In this embodiment, if Figure 6 As shown, an indicator block 15 is also provided on the synchronous pressure block 8. The indicator block 15 is located at the upper part of the synchronous pressure block 8. The indicator block 15 is red in color. After the leakage protector of the embodiment is installed on the housing, the state of the leakage protector can be judged by the indicator block 15.

[0059] Embodiment 7:

[0060] In this embodiment, compared with Embodiment 1, the first pin 26 is connected to the neutral line, and the second pin 25 is connected to the live line. Specifically, the spring clip includes a first spring clip, a second spring clip, a third spring clip and a PE line spring clip, and the first spring clip, the second spring clip, the third spring clip and the PE line spring clip are arranged on the bottom plate of the protector, and the wiring terminal includes a second pin, a first pin, a ground pin and an auxiliary connecting pin, and the auxiliary connecting pin is electrically connected to the first pin, the first pin 26 is connected to the neutral line, and the second pin 25 is connected to the live line;

[0061] Electrical connection contacts are provided on the tops of the second pin, the first pin, the ground pin and the auxiliary connection pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet, the third spring sheet and the PE wire spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connection pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and a synchronous pressure rod can simultaneously press down the PE wire spring sheet to connect with the ground pin. By adopting the above technical scheme, the second pin and the ground pin are shared in the two groups of protection structures, which effectively simplifies the overall structure of the dual-power leakage protector of the present invention and has a better protection effect.

[0062] Embodiment 8:

[0063] In this embodiment, compared with Embodiment 2, the first pin 26 is connected to the neutral line, and the second pin 25 is connected to the live line. Specifically, the spring includes a first spring, a second spring and a third spring; the first spring, the second spring and the third spring are arranged on the bottom plate of the protector, the wiring terminal includes a second pin, a first pin, a ground pin and an auxiliary connecting pin, the auxiliary connecting pin is electrically connected to the first pin, the first pin 26 is connected to the neutral line, and the second pin 25 is connected to the live line;

[0064] Electrical connection contacts are provided on the tops of the second pin, the first pin and the auxiliary connecting pin, and spring contacts corresponding to the electrical connection contacts are provided on the ends of the first spring sheet, the second spring sheet and the third spring sheet. A pressure rod on one side can be used to press down the first spring sheet to connect with the first pin, and a pressure rod on the other side can be used to press down the third spring sheet to connect with the auxiliary connecting pin. A synchronous pressure rod can be used to press down the second spring sheet to connect with the second pin, and the PE wire and the ground wire pin cannot be disconnected and must remain connected.

[0065] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A switching device for a dual-power leakage protector, characterized in that: The opening and closing device of the dual-power leakage protector comprises: two connecting devices (1), a spring-piece pressing block (2), a synchronous pressing block (8), a spring piece (11) and a protector bottom plate (3), wherein the synchronous pressing block (8) is located between two spring-piece pressing blocks (2) arranged in parallel, and the two spring-piece pressing blocks (2) rotate coaxially with the synchronous pressing block (8); The protector bottom plate (3) is also provided with a connection terminal (12); the spring sheet pressing block (2) is used to control the closing of the spring sheet (11) and the connection terminal (12); the spring sheet pressing block (2) is movably hinged with a pin support (10) arranged on the protector bottom plate (3) through a rotating pin (9); the two spring sheet pressing blocks (2) and a synchronous pressing block (8) between the two spring sheet pressing blocks (2) are jointly arranged on the rotating pin (9) and rotate around the rotating pin (9); The spring sheet pressing block (2) is provided with a shaft sleeve rotation driving block (4), a vertical fork groove (7) and a side pressure rod (17); the connecting device (1) is provided with a connecting iron core (16) extending laterally, the connecting iron core (16) is engaged with the vertical fork groove (7), and the connecting device (1) drives the connecting iron core (16) to move linearly; A synchronous pressure rod (14) is provided at the bottom of the synchronous pressure block (8), and shaft sleeve rotation abutment blocks (13) are provided on both sides of the synchronous pressure block (8). The shaft sleeve rotation drive block (4) on the spring piece pressure block (2) cooperates with the shaft sleeve rotation abutment block (13), and the spring piece pressure block (2) drives the synchronous pressure block (8) to rotate synchronously through the cooperation between the shaft sleeve rotation drive block (4) and the shaft sleeve rotation abutment block (13); The shaft sleeve rotation driving block (4) and the shaft sleeve rotation abutment block (13) are both open shaft sleeves, and a reserved rotation space exists between the shaft sleeve rotation driving block (4) and the shaft sleeve rotation abutment block (13); When at least one connecting device (1) is energized, the connecting iron core (16) drives the spring sheet pressing block (2) to rotate through the vertical fork groove (7), so that the side pressure rod (17) located at the bottom of the spring sheet pressing block (2) presses the spring sheet (11) downward, and the rotation of the spring sheet pressing block (2) drives the synchronous pressure block (8) to rotate synchronously, so that the synchronous pressure rod (14) presses the spring sheet (11) downward at the same time, so that the load is connected to the power supply.

2. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The spring piece (11) comprises a first spring piece (21), a second spring piece (22), a third spring piece (23) and a PE line spring piece (24); the first spring piece (21), the second spring piece (22), the third spring piece (23) and the PE line spring piece (24) are arranged on the protector bottom plate (3); the wiring terminal (12) comprises a second plug pin (25), a first plug pin (26), a ground wire plug pin (27) and an auxiliary connection pin (28); the auxiliary connection pin (28) is electrically connected to the first plug pin (26); the first plug pin (26) is connected to the live wire; and the second plug pin (25) is connected to the neutral wire; The second plug pin (25), the first plug pin (26), the ground wire plug pin (27) and the auxiliary connecting pin (28) are provided with electrical connection contacts (29) at the top, and the first spring sheet (21), the second spring sheet (22), the third spring sheet (23) and the PE wire spring sheet (24) are provided with spring sheet contacts (30) corresponding to the electrical connection contacts (29) at the ends. The pressure rod (17) on one side is used to press down the first spring sheet (21) to connect with the first plug pin (26), and the pressure rod (17) on the other side is used to press down the third spring sheet (23) to connect with the auxiliary connecting pin (28). The synchronous pressure rod (14) is used to press down the second spring sheet (22) to connect with the second plug pin (25), and the synchronous pressure rod (14) simultaneously presses down the PE wire spring sheet (24) to connect with the ground wire plug pin (27).

3. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The spring sheet (11) comprises a first spring sheet (21), a second spring sheet (22) and a third spring sheet (23); the first spring sheet (21), the second spring sheet (22) and the third spring sheet (23) are arranged on the protector bottom plate (3); the connection terminal comprises a second plug pin (25), a first plug pin (26), a ground wire plug pin (27) and an auxiliary connection pin (28); the auxiliary connection pin (28) is electrically connected to the first plug pin (26); the first plug pin (26) is connected to the live wire; and the second plug pin (25) is connected to the neutral wire; The second plug pin (25), the first plug pin (26) and the auxiliary connecting pin (28) are provided with electrical connection contacts (29) at their tops; the first spring sheet (21), the second spring sheet (22) and the third spring sheet (23) are all provided with spring sheet contacts (30) corresponding to the electrical connection contacts (29) at their ends; a pressure rod (17) on one side is used to press down the first spring sheet (21) to connect with the first plug pin (26); a pressure rod (17) on the other side is used to press down the third spring sheet (23) to connect with the auxiliary connecting pin (28); the synchronous pressure rod (14) is used to press down the second spring sheet (22) to connect with the second plug pin (25); and the PE wire and the ground wire plug pin (27) cannot be disconnected and remain connected.

4. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The spring sheet pressure block (2) comprises a pressure block upper part (5) and a pressure block lower part (6); the vertical fork groove (7) is arranged on the pressure block upper part (5); the side pressure rod (17) is arranged on the pressure block lower part (6); the pressure block upper part (5) and the pressure block lower part (6) are hingedly connected via a rotating pin shaft (9); a pressure block spring (18) in a compressed state is arranged between the pressure block upper part (5) and the pressure block lower part (6); when the side pressure rod (17) and the spring sheet (11) are in abutting state, the elastic force of the pressure block spring (18) can enable the side pressure rod (17) to maintain a stable force on the spring sheet (11); and the shaft sleeve rotation driving block (4) is arranged on the rotating shaft sleeve of the pressure block upper part (5) or the pressure block lower part (6).

5. The opening and closing device of the dual power leakage protector as claimed in claim 4, characterized in that: A hinge seat is provided at the hinged joint between the upper part (5) and the lower part (6) of the pressing block, the rotating pin shaft (9) is passed through the hinge seat, and a limit stopper (19) is also provided on the hinge seat. The limit stopper (19) is used to control the opening angle between the upper part (5) and the lower part (6) of the pressing block when rotating with the rotating pin shaft (9) as the axis.

6. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: A wedge-shaped buckle foot (20) is provided at the bottom of the connecting device (1), and the connecting device (1) is buckled and fixed to the protector bottom plate (3) via the buckle foot (20).

7. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The connecting device (1) further comprises a connecting coil (31) and a connecting spring (32); the connecting coil (31) is fixed inside the connecting device (1); and the connecting spring (32) and the connecting iron core (16) are horizontally arranged in the inner cavity of the connecting coil (31).

8. The opening and closing device of the dual power leakage protector according to claim 5, characterized in that: The hinge seat is provided with a pre-articulation device, which includes a boss (33) and a clamping groove (34). The boss (33) is located at the hinge of the upper part (5) of the pressing block, and the clamping groove (34) is located at the hinge of the lower part (6) of the pressing block. The pre-articulation of the upper part (5) of the pressing block and the lower part (6) of the pressing block is achieved through the cooperation of the boss (33) and the clamping groove (34).

9. The opening and closing device of the dual power leakage protector according to claim 5, characterized in that: The hinge seat is provided with a pre-articulation device, which includes a boss (33) and a clamping groove (34). The clamping groove (34) is located at the hinge of the upper part (5) of the pressing block, and the boss (33) is located at the hinge of the lower part (6) of the pressing block. The pre-articulation of the upper part (5) of the pressing block and the lower part (6) of the pressing block is achieved through the cooperation of the boss (33) and the clamping groove (34).

10. The opening and closing device of the dual power leakage protector according to claim 4, characterized in that: The upper part (5) and the lower part (6) of the pressing block are both provided with spring grooves at positions corresponding to the positions where the pressing block spring (18) is provided. A spring column is also provided in the spring groove. The spring groove and the spring column are used to install the pressing block spring (18).

11. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The synchronous pressing block (8) is also provided with an indicator block (15), the indicator block (15) is located at the upper part of the synchronous pressing block (8), and the indicator block (15) is red in color.

12. The opening and closing device of the dual power leakage protector according to claim 2, characterized in that: A convex block (35) is provided on the synchronous pressure rod (14) at a position corresponding to the PE line spring piece (24); when the synchronous pressure rod (14) is pressed down, the convex block (35) causes the PE line spring piece (24) to be connected to the corresponding plug pin before the first spring piece (21), the second spring piece (22), and the third spring piece (23); when the side pressure rod (17) is lifted, the convex block (35) causes the PE line spring piece (24) to be disconnected from the corresponding plug pin after the first spring piece (21), the second spring piece (22), and the third spring piece (23).

13. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The spring piece (11) comprises a first spring piece (21), a second spring piece (22), a third spring piece (23) and a PE line spring piece (24); the first spring piece (21), the second spring piece (22), the third spring piece (23) and the PE line spring piece (24) are arranged on the protector bottom plate (3); the wiring terminal (12) comprises a second plug pin (25), a first plug pin (26), a ground wire plug pin (27) and an auxiliary connection pin (28); the auxiliary connection pin (28) is electrically connected to the first plug pin (26); the first plug pin (26) is connected to the neutral wire; and the second plug pin (25) is connected to the live wire; The second plug pin (25), the first plug pin (26), the ground wire plug pin (27) and the auxiliary connecting pin (28) are provided with electrical connection contacts (29) at the top, and the first spring sheet (21), the second spring sheet (22), the third spring sheet (23) and the PE wire spring sheet (24) are provided with spring sheet contacts (30) corresponding to the electrical connection contacts (29) at the ends. The pressure rod (17) on one side is used to press down the first spring sheet (21) to connect with the first plug pin (26), and the pressure rod (17) on the other side is used to press down the third spring sheet (23) to connect with the auxiliary connecting pin (28). The synchronous pressure rod (14) is used to press down the second spring sheet (22) to connect with the second plug pin (25), and the synchronous pressure rod (14) simultaneously presses down the PE wire spring sheet (24) to connect with the ground wire plug pin (27).

14. The opening and closing device of the dual power leakage protector according to claim 1, characterized in that: The spring sheet (11) comprises a first spring sheet (21), a second spring sheet (22) and a third spring sheet (23); the first spring sheet (21), the second spring sheet (22) and the third spring sheet (23) are arranged on the protector bottom plate (3); the connection terminal comprises a second plug pin (25), a first plug pin (26), a ground wire plug pin (27) and an auxiliary connection pin (28); the auxiliary connection pin (28) is electrically connected to the first plug pin (26); the first plug pin (26) is connected to the live wire; the second plug pin (25) is connected to the neutral wire; the first plug pin (26) is connected to the neutral wire; the second plug pin (25) is connected to the live wire; The second plug pin (25), the first plug pin (26) and the auxiliary connecting pin (28) are provided with electrical connection contacts (29) at their tops; the first spring sheet (21), the second spring sheet (22) and the third spring sheet (23) are all provided with spring sheet contacts (30) corresponding to the electrical connection contacts (29) at their ends; a pressure rod (17) on one side is used to press down the first spring sheet (21) to connect with the first plug pin (26); a pressure rod (17) on the other side is used to press down the third spring sheet (23) to connect with the auxiliary connecting pin (28); the synchronous pressure rod (14) is used to press down the second spring sheet (22) to connect with the second plug pin (25); and the PE wire and the ground wire plug pin (27) cannot be disconnected and remain connected.

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