阅读说明：本技术 具有自动强制脱扣功能的漏电保护插座 (Leakage protection socket with automatic forced tripping function ) 是由 黄华道 于 2019-11-01 设计创作，主要内容包括：本发明公开了一种具有自动强制脱扣功能的漏电保护插座,其特征在于：它还包括一具有过载、漏电自动强制脱扣功能的组件；该组件包括一双金属片和一联动件。所述双金属片通过导线或导电金属片与漏电保护插座供电回路中的火线相连；联动件位于双金属片旁,与双金属片联动。联动件还与脱扣组件中横置的L形锁扣的相抵触。在双金属片变形时,双金属片通过联动件使L形锁扣动作,从而使漏电保护插座跳闸,切断电源输出。(The invention discloses a leakage protection socket with an automatic forced tripping function, which is characterized in that: it also includes a component with overload, leakage automatic forced tripping function; the assembly includes a bimetallic strip and a linkage member. The bimetallic strip is connected with a live wire in a power supply loop of the earth leakage protection socket through a lead or a conductive metal sheet; the linkage piece is positioned beside the bimetallic strip and is linked with the bimetallic strip. The linkage piece is also contacted with the transverse L-shaped lock catch in the tripping component. When the bimetallic strip deforms, the bimetallic strip enables the L-shaped lock catch to act through the linkage piece, so that the leakage protection socket trips to cut off power output.)

1. A leakage protection socket with an automatic forced tripping function comprises a shell, a reset button and a test button, wherein the reset button and the test button are arranged on the shell;

a trip assembly disposed within the housing; the tripping assembly comprises a tripper with a longitudinal through hole on the top surface, a locking spring and a transversely placed L-shaped lock catch with a longitudinal through hole on the top surface;

a reset pin which is positioned below the reset button and linked with the reset button penetrates through a longitudinal through hole on the top surface of the release and is positioned above the top surface of the L-shaped lock catch; the method is characterized in that:

it also includes a component with overload, leakage automatic forced tripping function; the assembly includes a bimetallic strip and a linkage member;

the bimetallic strip is connected with a live wire in a power supply loop of the earth leakage protection socket through a lead or a conductive metal sheet;

the linkage piece is positioned beside the bimetallic strip and is linked with the bimetallic strip; the linkage piece is also abutted against an L-shaped lock catch transversely arranged in the tripping assembly;

when the bimetallic strip deforms, the bimetallic strip enables the L-shaped lock catch to act through the linkage piece, so that the leakage protection socket trips to cut off power output.

2. A residual current device with an automatic forced trip function according to claim 1, wherein: the linkage piece is L-shaped and is positioned below the bimetallic strip, and the side wall of the linkage piece is abutted against the side wall of the L-shaped lock catch transversely arranged in the tripping assembly.

3. A residual current device with an automatic forced trip function according to claim 1, wherein: the bimetal strip is positioned below the test button.

4. A residual current device with an automatic forced trip function according to claim 1, wherein: the linkage piece is positioned beside the bimetallic strip; the end part of the bimetallic strip is in contact with the linkage piece, and the linkage piece can be pushed to act; the end part of the linkage part directly abuts against the side wall of the top surface of the transverse L-shaped lock catch to push the lock catch to act.

5. A residual current device with an automatic forced trip function according to claim 4, wherein: an L-shaped elastic tripping piece is arranged below the test button, and the side wall of the L-shaped elastic tripping piece is in contact with the side wall of the L-shaped lock catch to push the L-shaped lock catch to act;

and the bulge at the bottom of the test button is clamped in the through hole on the top surface of the elastic tripping piece.

6. A residual current device with automatic forced release function according to any of claims 1-4, wherein: the bottom of the reset pin is a plane.

Technical Field

The invention relates to a power socket with an electric leakage protection function, in particular to an electric leakage protection socket with an automatic forced tripping function.

Background

When a plurality of electric appliances work simultaneously for a long time, people often worry about whether the leakage protection socket can trip or not when an overload condition occurs in a circuit, and power output is cut off?, and when the electric appliances leak electricity, the leakage protection socket can trip or not and power output is cut off?, so that the power sockets (called power socket and power wiring board) in the market at present have the leakage and overload protection functions.

As shown in fig. 1 and 2, a common power socket on the market includes a housing 1, a reset button 2, a test button 3, a three-hole power jack 11, a two-hole power jack 12, and a power live wire conductive metal bar and a power neutral wire conductive metal bar (not shown) disposed in the housing and connected to the three-hole power jack and the two-hole power jack.

A circuit board 7 with an earth leakage protection function and a tripping assembly are arranged in the shell. The circuit board 7 is provided with an overload and leakage protection circuit and a coil for detecting leakage current and overload current, and the coil is wound at the middle part 61 of the coil rack 6; an iron core 66 is provided within the coil. The tripping assembly comprises a tripper 5 with a longitudinal through hole on the top surface, a locking spring 51 and a transversely placed L-shaped lock 52 with a longitudinal through hole on the top surface. The L-shaped lock catch 52 is inserted into the release 5, and a lock catch spring 51 is arranged between the side wall of the lock catch 52 and the release 5. The trip unit is placed in the bobbin 6 with the end of the plunger 66 facing the side wall of the L-shaped latch 52.

The bobbin 6 is disposed above the circuit board 7, and the coil protection cover 4 is disposed above the bobbin 6. A live wire movable contact piece 20L and a zero line movable contact piece 20N are respectively arranged above the left side and the right side of the release 5, and quick tripping springs 8 are respectively arranged between the live wire movable contact piece 20L, the zero line movable contact piece 20N and the coil protective cover 4.

The coil protective cover 4 is provided with a power live wire input end 2L and a power zero line input end 2N of a leakage protection socket which are connected with a live wire and a zero line of an external power supply; and a live wire movable contact piece 20L and a zero line movable contact piece 20N which are connected with the power live wire and the zero line conductive metal bars in the shell.

The reset pin 21 under the reset button 2 and linked with the reset button passes through the through hole on the top surface of the release 5 and is positioned above the top surface of the L-shaped lock catch 52. Reset button 2 is pressed, the earth leakage protection socket function is intact, the intact no electric leakage phenomenon of consumer, when no overload, reset pin 21 below reset button 2 is blocked by the through-hole lower plane of L shape hasp 52 top surface, reset button 2 resets, power live wire input 2L links to each other with live wire movable contact piece 20L, power zero line input 2N links to each other with zero line movable contact piece 20N, power live wire conductive metal row and power zero line conductive metal row that link to each other with three hole supply jack in the casing are electrified, the earth leakage protection socket has power output, for the power supply of consumer, the consumer works.

When the electric leakage phenomenon occurs to the electric equipment or the whole power supply loop is overloaded, the coil on the circuit board 7 detects the leakage current or the overload current, the coil generates a magnetic field, and the iron core 66 is attracted to act; the iron core 66 pushes the lock catch 52 to act, so that the reset pin 21 penetrating through the lock catch 52 and the longitudinal through hole on the top surface of the release 5 jumps from the lock catch 52 and the longitudinal through hole of the release 5, the reset button 2 jumps/trips, the live wire input end 2L of the power supply is disconnected with the live wire movable contact piece 20L, the zero wire input end 2N of the power supply is disconnected with the zero wire movable contact piece 20N, the live wire conductive metal bar and the power supply zero wire conductive metal bar which are connected with the three-hole power supply jacks and the two-hole power supply jacks in the shell are uncharged, the power leakage protection socket cuts off the power output, the power supply of the electric equipment is cut off.

The power socket with the functions of leakage and overload protection has the following defects: the power socket cuts off the power output of the power socket through the actions of devices such as an overload and leakage protection circuit, a coil, an iron core, a tripping assembly and the like, cuts off the power supply of electric equipment, and then stops the electric equipment to work, so that the protection aim is fulfilled.

Disclosure of Invention

In view of the above, the present invention provides an earth leakage protection socket with an automatic forced tripping function. The leakage protection socket is additionally provided with a structure with overload and automatic forced tripping function of leakage on the existing leakage current and overload protection structure, so that the leakage protection socket has a double protection structure, and the leakage protection socket is ensured to have the leakage and overload protection functions.

In order to achieve the purpose, the invention adopts the following technical scheme: a leakage protection socket with an automatic forced tripping function comprises a shell, a reset button and a test button, wherein the reset button and the test button are arranged on the shell; a trip assembly disposed within the housing; the tripping assembly comprises a tripper with a longitudinal through hole on the top surface, a locking spring and a transversely placed L-shaped lock catch with a longitudinal through hole on the top surface; a reset pin which is positioned below the reset button and linked with the reset button penetrates through a longitudinal through hole on the top surface of the release and is positioned above the top surface of the L-shaped lock catch; the method is characterized in that:

it also includes a component with overload, leakage automatic forced tripping function; the assembly includes a bimetallic strip and a linkage member; the bimetallic strip is connected with a live wire in a power supply loop of the earth leakage protection socket through a lead or a conductive metal sheet; the linkage piece is positioned beside the bimetallic strip and is linked with the bimetallic strip; the linkage piece is also abutted against an L-shaped lock catch transversely arranged in the tripping assembly; when the bimetallic strip deforms, the bimetallic strip enables the L-shaped lock catch to act through the linkage piece, so that the leakage protection socket trips to cut off power output.

In a preferred embodiment of the present invention, the link is L-shaped and located below the bimetal, and a side wall of the link abuts against a side wall of a L-shaped lock catch transversely disposed in the trip assembly.

The bimetal strip is positioned below the test button.

In another preferred embodiment of the present invention, the linkage is located beside the bimetal; the end part of the bimetallic strip is in contact with the linkage piece, and the linkage piece can be pushed to act; the end part of the linkage part directly abuts against the side wall of the top surface of the transverse L-shaped lock catch to push the lock catch to act.

An L-shaped elastic tripping piece is arranged below the test button, and the side wall of the L-shaped elastic tripping piece is in contact with the side wall of the L-shaped lock catch to push the L-shaped lock catch to act;

and the bulge at the bottom of the test button is clamped in the through hole on the top surface of the elastic tripping piece.

The invention has the advantages that: when a certain electronic component in the original leakage protection circuit of the leakage protection socket fails and cannot play the required protection function, the additional component with the automatic forced tripping function of overload and leakage acts to trip the leakage protection socket and cut off the power output of the leakage protection socket, so that the protection function is played. The assembly with the automatic forced tripping function of overload and electric leakage is simple in structure, sensitive in action and quick in response, so that the improved electric leakage protection socket has a double-insurance function.

Drawings

FIG. 1 is a schematic view of an earth leakage protection socket;

FIG. 2 is a schematic diagram of a conventional earth leakage protection socket for implementing earth leakage overload protection;

fig. 3 is a schematic exploded view of a portion of the overload and leakage protection circuit of embodiment 1 of the present invention;

fig. 4A is a cross-sectional view of the reset state of the overload and leakage protection functional part in embodiment 1 of the present invention;

fig. 4B is a schematic structural diagram of the embodiment 1 of the present invention when the overload and leakage protection function part is in a reset state;

fig. 5A is a cross-sectional view of the overload and leakage protection device of embodiment 1 according to the present invention in an overload state;

fig. 5B is a schematic structural diagram of the overload state of the part with the overload and leakage protection functions in embodiment 1 of the present invention;

FIG. 6 is a schematic exploded view of a part of the overload and leakage protection circuit of embodiment 2 of the present invention;

fig. 7A is a partial cross-sectional view of the overload state of the portion having the overload and leakage protection functions according to embodiment 2 of the present invention;

fig. 7B is another partial cross-sectional view of the overload and leakage protection device of embodiment 2 according to the present invention;

fig. 7C is a schematic structural diagram of embodiment 2 of the present invention when the overload and leakage protection function is in an overload state;

FIG. 8A is a cross-sectional view of the position relationship between the release plate and the lock catch in the reset state according to embodiment 2 of the present invention;

fig. 8B is a sectional view of the position relationship between the trip plate and the latch when the manual forced trip is performed in embodiment 2 of the present invention.

Detailed Description

The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and therefore, the embodiments disclosed in the specification should not be construed as limiting the present invention, but merely as exemplifications of embodiments thereof, which are intended to make the features of the present invention obvious.

In order to overcome the defect that once one electronic component in an electric leakage and overload protection circuit of the existing electric leakage protection socket is damaged, other components are intact, and the protection function of the electric leakage protection socket is invalid, the invention is additionally provided with an assembly with the automatic forced tripping function of overload and electric leakage. The assembly includes a bimetallic strip and a linkage member. The bimetallic strip is connected with a live wire in a power supply loop of the earth leakage protection socket through a lead or a conductive metal sheet, the linkage piece is positioned beside the bimetallic strip and is linked with the bimetallic strip, and meanwhile, the linkage piece is also abutted against an L-shaped lock catch transversely arranged in the tripping component; when the bimetallic strip deforms, the bimetallic strip enables the L-shaped lock catch to act through the linkage piece, so that the leakage protection socket trips to cut off power output.

When the electric equipment has electric leakage or overload, the current in the power supply loop of the electric leakage protection socket exceeds the rated current value, the bimetallic strip connected in series in the power supply loop of the electric leakage protection socket deforms, the linkage piece linked with the bimetallic strip acts to push the L-shaped lock catch in the tripping component to act, so that the reset pin penetrating through the lock catch and the longitudinal through hole on the top surface of the tripper jumps from the inside of the lock catch and the longitudinal through hole of the tripper, the reset button jumps/trips, the input end of the live wire of the power supply is disconnected with the live wire movable contact spring, the input end of the zero wire of the power supply is disconnected with the zero wire movable contact spring, the conductive metal bar of the live wire of the power supply and the conductive metal bar of the zero wire of the power supply in the shell are disconnected/uncharged, the electric leakage protection socket cuts off the power output, the.

Fig. 3 is a schematic exploded view of a portion having overload and leakage protection functions according to embodiment 1 of the present invention. As shown in fig. 3, the assembly having the overload and leakage automatic forced trip function includes a bimetallic strip 32 and a link member 33. The bimetal 32 is connected to the live line in the earth leakage protection socket power supply loop through the conductive metal plate 31. The link 33 is located below the bimetal 32 and is linked with the bimetal. In the embodiment 1 of the present invention, the link member 33 is L-shaped, and the side wall thereof abuts against the side wall of the L-shaped lock catch 52 transversely disposed in the trip unit.

As shown in fig. 4A and 4B, when the reset button 2 is pressed, the leakage protection socket functions well, and the electrical equipment is well without leakage and overload, the reset pin 21 below the reset button 2 is clamped by the through hole on the top surface of the L-shaped lock catch 52, the reset button 2 is reset, the live wire input end 2L of the power supply is connected with the live wire movable contact piece 20L, the null wire input end 2N of the power supply is connected with the null wire movable contact piece 20N, the live wire conductive metal strip and the power supply null wire conductive metal strip connected with the three-hole power supply jacks and the two-hole power supply jacks in the shell are electrified, the leakage protection socket has power output to supply power to the electrical equipment, and the electrical equipment works; meanwhile, the bimetal 32 is not deformed normally, the link 33 does not move, and the side wall of the link 33 abuts against the side wall of the L-shaped lock catch 52 arranged transversely.

As shown in fig. 5A and 5B, when the electrical equipment has a leakage phenomenon or the whole power supply loop has an overload, the bimetal 32 connected in series in the power supply loop of the leakage protection socket is deformed, the link 33 is deformed to push the side wall of the L-shaped latch 52 to actuate the L-shaped latch 52, so that the reset pin 21 passing through the longitudinal through hole on the top surface of the latch 52 and the release 5 is tripped out of the longitudinal through holes on the latch 52 and the release 5, the reset button 2 is tripped up/tripped, the live wire input end 2L is disconnected from the live wire movable contact 20L, the live wire input end 2N is disconnected from the neutral wire movable contact 20N, the live wire conductive metal bar and the live wire conductive metal bar connected to the three-hole power jacks and the two-hole power jacks in the housing are not electrically charged, the leakage protection socket cuts off the power output and cuts off the power supply of the electrical equipment, the electric equipment stops working.

As shown in fig. 3, 4A and 5A, the bimetal 32 is located below the test button 3, and a protrusion at the bottom of the test button 3 is caught in the through hole 321 on the top surface of the bimetal 32. In the use, the user also can press test button 3, through observing whether reset button 2 can trip/trip, and then whether the detection earth leakage protection socket is intact, whether still have earth leakage protection function and overload protection function.

Fig. 6 is a schematic exploded view of a part of the overload and leakage protection device of embodiment 2 of the present invention. As shown in the figure, the assembly having the overload automatic forced trip function according to embodiment 2 of the present invention includes a bimetal 63 and a link member 64. The bimetal 63 is connected to the live line in the earth leakage protection socket power supply loop through the conductive metal plate 62. The link 64 is located beside the bimetal 63 and is linked with the bimetal 63. In embodiment 2 of the present invention, the end 63 of the bimetal 63 contacts the linkage 64, and the end 644 of the linkage 64 abuts against the lateral wall of the top surface of the L-shaped latch 52.

When the reset button 2 is pressed, the leakage protection socket has a perfect function, and the electric equipment is perfect without leakage phenomenon and overload phenomenon, the reset pin 21 below the reset button 2 is clamped by the lower plane of the through hole on the top surface of the L-shaped lock catch 52, the reset button 2 is reset, the input end 2L of the power live wire is connected with the live wire movable contact piece 20L, the input end 2N of the power zero wire is connected with the zero wire movable contact piece 20N, the power live wire conductive metal bar and the power zero wire conductive metal bar which are connected with the three-hole power jacks and the two-hole power jacks in the shell are electrified, the leakage protection socket has power output to supply power for the electric equipment, and the electric equipment works; meanwhile, the bimetal 63 is in a normal state without deformation, and the linkage 64 does not act.

As shown in fig. 6 and 7A-7C, when the electrical equipment has a current leakage phenomenon or an overload condition occurs in the whole power supply loop, the bimetal 63 connected in series in the power supply loop of the leakage protection socket is deformed, the end 631 of the bimetal 63 is deformed to push the linkage 64 to act, the end 644 of the linkage 64 pushes the side wall of the top surface of the L-shaped latch 52 to act the L-shaped latch 52, so that the reset pin 21 passing through the longitudinal through hole on the top surface of the latch 52 and the release 5 jumps from the longitudinal through holes of the latch 52 and the release 5, the reset button 2 jumps/trips, the live power input end 2L is disconnected from the live power movable contact 20L, the live power input end 2N is disconnected from the neutral power movable contact 20N, the live power conductive metal bar and the live power conductive metal bar connected with the three-hole power jacks and the two-hole power jacks in the housing are not electrified, the leakage protection socket cuts off the power output, cuts off the power supply of the electric equipment, and the electric equipment stops working.

As shown in fig. 6, 8A and 8B, in embodiment 2 of the present invention, an L-shaped elastic trip piece 31 is disposed under the test button 3, and a side wall of the L-shaped elastic trip piece 31 contacts with a side wall of the L-shaped latch 52. The bulge at the bottom of the test button 3 is clamped in the through hole at the top surface of the elastic trip sheet 31.

In the using process, a user can press the test button 3 to enable the elastic tripping piece 31 to act, as the elastic tripping piece 31 acts, the side wall of the elastic tripping piece pushes against the side wall of the L-shaped lock catch 52 to enable the L-shaped lock catch 52 to act, and further the reset pin 21 penetrating through the lock catch 52 and the longitudinal through hole on the top surface of the release 5 jumps from the inside of the lock catch 52 and the longitudinal through hole of the release 5, the reset button 2 jumps/trips, the power live wire input end 2L is disconnected with the live wire movable contact piece 20L, the power zero wire input end 2N is disconnected with the zero wire movable contact piece 20N, the power live wire conductive metal bar and the power zero wire conductive metal bar connected with the three-hole power jacks and the two-hole power jacks in the shell are discharged without electricity, the electric leakage protection socket cuts off the power output, cuts off the power supply of the electric equipment, the electric equipment stops.

The bottom of the reset pin 21 which is positioned below the reset button 2 and linked with the reset button in the traditional leakage protection socket is in a pointed shape, so that the traditional leakage protection socket can still reset when the protection function of the leakage protection socket is invalid, and the consumer is misled to continue using the socket. As shown in fig. 3 and 6, the bottom of the reset pin 21 is designed to be flat, and if the leakage protection socket fails to protect, the reset pin 21 prevents the reset button from being reset by pressing the reset button.

The invention has the advantages that: when a certain electronic component in the original leakage protection circuit of the leakage protection socket fails and cannot play the required protection function, the additional component with the automatic forced tripping function of overload and leakage acts to trip the leakage protection socket and cut off the power output of the leakage protection socket, so that the protection function is played. The assembly with the automatic forced tripping function of overload and electric leakage is simple in structure, sensitive in action and quick in response, so that the improved electric leakage protection socket has a double-insurance function.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.