CN220934843U

CN220934843U - Residual current protection device

Info

Publication number: CN220934843U
Application number: CN202321253255.XU
Authority: CN
Inventors: 谭国彩; 兰建伟; 杨震
Original assignee: Beijing Hengxun Hong'an Electric Power Installation Co ltd
Current assignee: Beijing Hengxun Hong'an Electric Power Installation Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2024-05-10
Anticipated expiration: 2033-05-23

Abstract

The application provides a residual current protection device, and relates to the field of protection devices. The residual current protection device comprises a bottom plate and a top plate, wherein a rotating mechanism is arranged in the bottom plate, and a protection mechanism is arranged in the bottom plate. This residual current protection device can convey the electric current to the heat resilience piece after the conducting strip is electrically conductive, when the electric current is too big when exceeding rated current, the temperature of heat resilience piece will continuously rise, will warp when the heat resilience piece reaches certain temperature and jump, thereby drive the conducting strip and remove, make conducting strip and power separation in the twinkling of an eye, the operation is swift convenient, can cut off the power fast and protect it, when needs normal work, make the power deformation of a return spring through pressing the depression bar, then drive the limiting plate and remove, make the depression bar press the heat resilience piece of perk, thereby make the heat resilience piece rebound through helping the spring bar, the operation is swift convenient, thereby can carry out the secondary to the device.

Description

Residual current protection device

Technical Field

The application relates to the technical field of protection devices, in particular to a residual current protection device.

Background

A plastic case breaker with residual current protection unit is provided, wherein the residual current protection unit comprises the following parts: the device comprises a circuit board, a residual current release, an insulating part, a zero sequence current transformer and a conductor. The main circuit conductors of each pole of the load side of the circuit breaker penetrate through the annular center of the zero sequence current transformer and then are connected with the load side loop. The main circuit conductors of each pole are isolated from each other by an insulating member. The circuit breaker with the residual current protection unit has the overload protection and short-circuit protection functions and also has the residual current protection function.

Through retrieving, a residual current protection device (authorized bulletin number CN 212231071U) "includes a casing, there are annular sampling coils and a controller in the casing, be electrically connected between sampling coils and the controller," the device is through connecting the outer end of pin with outside control system and power, then pass the hole of stepping down of casing with the power supply system and install, the power provides the power for the controller through the pin, sampling coils gathers the residual current of power supply system, and transmit the residual current signal who gathers to the controller, when residual current exceeds the protection value of controller, the controller exports the leakage signal who receives to outside control system through the pin, the rethread outside control system cuts off the power supply.

However, after the device receives the residual current, the device needs to be connected with an external control system by connecting an electric wire again, and then a residual current signal can be transmitted to the controller, so that the device cannot conduct power-off protection on a circuit with the residual current at the first time, and internal elements are enabled to be in quick contact with high current to be aged and damaged.

Disclosure of utility model

(One) solving the technical problems

In order to overcome the defects of the prior art, the application provides a residual current protection device, which solves the problems that in the prior art, the device can not perform power-off protection on a residual current circuit at the first time, so that an internal element is quickly contacted with high current to cause aging and damage, and the device can not maintain and replace the inside when damaged.

(II) technical scheme

In order to achieve the above purpose, the application is realized by the following technical scheme: the residual current protection device comprises a bottom plate and a top plate, wherein a rotating mechanism is arranged in the bottom plate, a protection mechanism is arranged in the bottom plate, a conduction mechanism is arranged in the bottom plate, a protection mechanism is arranged on the inner side of the top plate, and two wiring boards are fixedly connected to one side of the bottom plate;

The protection machanism includes No. three current conducting plates, the inner wall fixedly connected with No. three current conducting plates of roof, one side fixedly connected with heat returns the shell fragment of No. three current conducting plates, the bottom fixedly connected with conducting plate of heat returns the shell fragment, the inner wall fixedly connected with of bottom plate and the mutually supporting bullet pole that helps of heat resilience piece, the top sliding connection of roof has the depression bar, the outside cover of depression bar is equipped with a reset spring, the outside fixedly connected with limiting plate of depression bar.

Through adopting above-mentioned technical scheme, after the conducting strip is electrically conductive, can convey the electric current heat resilience piece, when the electric current is too big exceeds rated current, the temperature of heat resilience piece will continuously rise, will warp when heat resilience piece reaches certain temperature and jump, thereby drive the conducting strip and remove, make conducting strip and power separation in the twinkling of an eye, the operation is swift convenient, can cut off the power fast and protect it, when needs normal work, make the spring-force deformation of returning of a number through pressing the depression bar, then drive the limiting plate and remove, make the depression bar press the heat resilience piece of perk, thereby make heat resilience piece rebound through helping the spring bar, and is swift convenient in operation, thereby can carry out the secondary to the device.

Preferably, the rotating mechanism comprises a stabilizing plate, the bottom fixedly connected with stabilizing plate of roof, the inside rotation of stabilizing plate is connected with a dwang, a one end fixedly connected with bevel gear of dwang, one side meshing of a bevel gear is connected with No. two bevel gears, the bottom fixedly connected with dwang No. two bevel gears, the other end and the bottom plate rotation of No. two dwang are connected, the outside fixedly connected with dwang of No. two dwang, the fan-shaped spout that mutually supports with the dwang is seted up at the top of a conducting plate, the inboard fixedly connected with and the second conducting plate that mutually supports of dwang of bottom plate.

Through adopting above-mentioned technical scheme, when needing to inspect residual current, drive the bevel gear through rotating dwang No. one and rotate, then drive No. two bevel gears and rotate, make dwang No. two rotate, drive the pivoted panel and rotate, change the connection line position to switch on protection device, when residual current exceeded the protection value of controller, can cut off the power supply fast.

Preferably, the conduction mechanism comprises a sliding groove, a sliding plate matched with the rotating plate is connected in a sliding manner in the sliding groove, a sliding rod is fixedly connected to one side of the sliding plate, a second reset spring is sleeved on the outer side of the sliding rod, a fixing plate is fixedly connected to one side of the second reset spring, the bottom of the fixing plate is fixedly connected with the bottom plate, the inside of the fixing plate is connected with the sliding rod in a sliding manner, and an electric communication plate is fixedly connected to one end of the fixing plate.

Through adopting above-mentioned technical scheme, remove through the pivoted board and drive the sliding plate and slide in the inside of spout, make the slide bar slide, drive No. two reset spring atress compression, and then make electric connection board and wiring board carry out electric connection, form the closed loop, make when hot resilience piece can not take place deformation through the electric current when not needing to use.

Preferably, one side of the third conductive plate is fixedly connected with a fourth conductive plate.

Through adopting above-mentioned technical scheme, carry out electric connection to No. three current conducting plate and wiring board through No. four current conducting plates.

Preferably, one side of the second conductive plate is fixedly connected with an electric wire, and the other end of the electric wire is fixedly connected with one of the wiring boards.

Through adopting above-mentioned technical scheme, make No. two current-conducting plates and wiring board carry out electric connection through the electric wire.

Preferably, the two sides of the bottom plate and the top plate are fixedly connected with connecting plates, and bolts are connected with the inner parts of the four connecting plates in a threaded manner.

Through adopting above-mentioned technical scheme, make bottom plate and roof pass through the connecting plate through the bolt and fix, protect interior connecting piece, can rotate the bolt again and open bottom plate and roof and change interior part when inside the emergence damages, be convenient for reuse.

Preferably, the top of the bottom plate is fixedly connected with a sealing gasket.

Through adopting above-mentioned technical scheme, seal bottom plate and roof through sealed pad, protection internals can not wet the corruption.

Preferably, the top of depression bar and dwang all fixedly connected with mounting panel.

Through adopting above-mentioned technical scheme, can carry out quick pressure to the depression bar through one of them mounting panel and move, can rotate the dwang fast through another mounting panel.

(III) beneficial effects

The application provides a residual current protection device. The beneficial effects are as follows:

1. This residual current protection device, after the conducting strip is electrically conductive, can convey the electric current heat resilience piece, when the electric current excessively surpasses rated current, the temperature of heat resilience piece will continuously rise, will warp when heat resilience piece reaches certain temperature and jump, thereby drive the conducting strip and remove, make conducting strip and power separation in the twinkling of an eye, the operation is swift convenient, can cut off the power fast and protect it, when needs normal work, make the spring-back real force deformation of No. one through pressing the depression bar, then drive the limiting plate and remove, make the depression bar press the heat resilience piece of perk, thereby make heat resilience piece rebound through helping the spring bar, the operation is swift convenient, thereby can carry out the secondary to the device.

2. This kind of residual current protection device, when needs carry out the inspection to residual current, drive the bevel gear through rotating the dwang No. one and rotate, then drive No. two bevel gears and rotate, make the dwang No. two rotate, drive the pivoted panel and rotate, change the connecting line position to switch on protection device, when the residual current exceeded the protection value of controller, can cut off the power supply fast.

3. This residual current protection device moves through the pivoted panel and drives the sliding plate and slide in the inside of spout, makes the slide bar slide, drives No. two reset spring atress compression, and then makes electric connection board and wiring board carry out electric connection, forms the closed loop, makes when hot resilience piece can not take place deformation through the electric current when not needing to use.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic diagram of a side view reset state of the present application;

FIG. 3 is a schematic diagram of a side view of the present application in an open contact state;

FIG. 4 is a schematic top view of the present application;

FIG. 5 is a schematic view of the present application showing contact closure;

FIG. 6 is an enlarged schematic view of the application at A;

FIG. 7 is a schematic diagram of a conductive mechanism according to the present application.

In the figure: 1. a bottom plate; 2. a top plate; 3. a rotating mechanism; 31. a first rotating rod; 32. a fixing plate; 33. a first bevel gear; 34. a second bevel gear; 35. a first conductive plate; 36. a fan-shaped chute; 37. a rotating plate; 38. a second rotating rod; 39. a second conductive plate; 4. a protection mechanism; 41. a third conductive plate; 42. a thermal return spring plate; 43. a conductive sheet; 44. a limiting plate; 45. a first return spring; 46. a spring assisting rod; 47. a compression bar; 5. a conduction mechanism; 51. a sliding plate; 52. a chute; 53. a slide bar; 54. a second return spring; 55. a fixing plate; 56. an electrical communication board; 6. a fourth conductive plate; 7. an electric wire; 8. a wiring board; 9. a connecting plate; 10. a bolt; 11. a sealing gasket; 12. and (3) mounting a plate.

Detailed Description

The application is further illustrated by the figures and examples.

Referring to fig. 1-7, an embodiment of the present application provides a residual current protection device, which includes a bottom plate 1 and a top plate 2, wherein a rotation mechanism 3 is provided in the bottom plate 1, a protection mechanism 4 is provided in the bottom plate 1, a conduction mechanism 5 is provided in the bottom plate 1, a protection mechanism 4 is provided in the inner side of the top plate 2, and two wiring boards 8 are fixedly connected to one side of the bottom plate 1;

the protection machanism 4 includes No. three current-conducting plate 41, the inner wall fixedly connected with No. three current-conducting plate 41 of roof 2, one side fixedly connected with heat returns shell fragment 42 of No. three current-conducting plate 41, the bottom fixedly connected with conducting strip 43 of heat returns shell fragment 42, the inner wall fixedly connected with of bottom plate 1 and the mutually supporting bullet rod 46 of helping of heat resilience piece 42, the top sliding connection of roof 2 has depression bar 47, the outside cover of depression bar 47 is equipped with return spring 45 No. one, the outside fixedly connected with limiting plate 44 of depression bar 47.

When the conductive sheet 43 conducts electricity, the current is transferred to the thermal rebound sheet 42, when the current is too large and exceeds rated current, the temperature of the thermal rebound sheet 42 continuously rises, when the thermal rebound sheet 42 reaches a certain temperature, the thermal rebound sheet 42 is deformed and bounces, thereby driving the conductive sheet 43 to move, enabling the conductive sheet 43 to be instantaneously separated from a power supply, being fast and convenient to operate, being capable of rapidly cutting off the power supply to protect the conductive sheet, when the device needs to work normally, the first return spring 45 is deformed by pressing the pressing rod 47, then the limiting plate 44 is driven to move, the pressing rod 47 is used for pressing the warped thermal rebound sheet 42, and accordingly the thermal rebound sheet 42 rebounds through the elastic supporting rod 46, being fast and convenient to operate, and being capable of being used for the second time.

Referring to fig. 1 to 5, in one aspect of the present embodiment, the rotation mechanism 3 includes a stabilizing plate 32, the bottom of the top plate 2 is fixedly connected with the stabilizing plate 32, the inside of the stabilizing plate 32 is rotatably connected with a first rotation rod 31, one end of the first rotation rod 31 is fixedly connected with a first bevel gear 33, one side of the first bevel gear 33 is engaged and connected with a second bevel gear 34, the bottom of the second bevel gear 34 is fixedly connected with a second rotation rod 38, the other end of the second rotation rod 38 is rotatably connected with the bottom plate 1, the outside of the second rotation rod 38 is fixedly connected with a rotation plate 37, the inside of the bottom plate 1 is fixedly connected with a first conductive plate 35, the top of the first conductive plate 35 is provided with a sector chute 36 which is mutually matched with the rotation plate 37, and the inside of the bottom plate 1 is fixedly connected with a second conductive plate 39 which is mutually matched with the rotation plate 37.

When the residual current is required to be checked, the first rotating rod 31 is rotated to drive the first bevel gear 33 to rotate, then the second bevel gear 34 is driven to rotate, the second rotating rod 38 is rotated to drive the rotating plate 37 to rotate, the position of the connecting line is changed, the protection device is connected, and when the residual current exceeds the protection value of the controller, the power can be rapidly cut off.

Referring to fig. 1 to 7, in one aspect of the present embodiment, the conduction mechanism 5 includes a chute 52, a sliding plate 51 that is matched with the rotating plate 37 is slidingly connected inside the chute 52, a sliding rod 53 is fixedly connected to one side of the sliding plate 51, a No. two return spring 54 is sleeved outside the sliding rod 53, a fixing plate 55 is fixedly connected to one side of the No. two return springs 54, a bottom of the fixing plate 55 is fixedly connected to the base plate 1, an inside of the fixing plate 55 is slidingly connected to the sliding rod 53, and an electrical communication plate 56 is fixedly connected to one end of the fixing plate 55.

The sliding plate 51 is driven to slide in the sliding groove 52 through the movement of the rotating plate 37, so that the sliding rod 53 slides, the second return spring 54 is driven to be compressed under the force, and the electric communication plate 56 is electrically connected with the wiring board 8 to form a closed loop, so that the thermal rebound piece 42 cannot deform through current when not in use.

Referring to fig. 1 to 5, in one aspect of the present embodiment, a fourth conductive plate 6 is fixedly connected to one side of a third conductive plate 41.

The third conductive plate 41 and the wiring board 8 are electrically connected by the fourth conductive plate 6.

Referring to fig. 1 to 5, in one aspect of the present embodiment, an electric wire 7 is fixedly connected to one side of the second conductive plate 39, and the other end of the electric wire 7 is fixedly connected to one of the wiring boards 8.

The second conductive plate 39 and the wiring board 8 are electrically connected by the electric wire 7.

Referring to fig. 1 to 5, in one aspect of the present embodiment, the connection plates 9 are fixedly connected to both sides of the bottom plate 1 and the top plate 2, and bolts 10 are screwed to the insides of the four connection plates 9.

The bottom plate 1 and the top plate 2 are fixed through the connecting plate 9 by the bolts 10, the internal connecting piece is protected, when the internal part is damaged, the bolts 10 can be rotated again to open the bottom plate 1 and the top plate 2 for replacing the internal part, and the internal part is convenient to reuse.

Referring to fig. 1, in one aspect of the present embodiment, a gasket 11 is fixedly attached to the top of the base plate 1.

The bottom plate 1 and the top plate 2 are sealed by the gasket 11 to protect the internal parts from moisture and corrosion.

Referring to fig. 1-5, in one aspect of this embodiment, the top of each of the compression bar 47 and the number one turning bar 31 is fixedly connected to the mounting plate 12.

The pressing lever 47 can be rapidly pressed by one of the mounting plates 12, and the first rotation lever 31 can be rapidly rotated by the other mounting plate 12.

All the electric equipment in this scheme all carry out the power supply through external power supply.

Working principle: during the use, carry out electric connection with the circuit through wiring board 8, when needing to inspect residual current, drive first bevel gear 33 through rotating first dwang 31 and rotate, then drive second bevel gear 34 and rotate, make second dwang 38 rotate, drive dwang 37 and rotate, change the connecting line position, thereby switch on protection device, when residual current exceeds the protection value of controller, can cut off the power supply fast, it slides in the inside of spout 52 to drive sliding rod 53, drive second reset spring 54 atress compression, and then make electric intercommunication board 56 and wiring board 8 carry out electric connection, form the closed loop, make and can not take place deformation through the electric current when not needing to use when conducting plate 43, can pass through electric current and heat rebound piece 42, when the electric current excessively surpasses rated current, the temperature of heat rebound piece 42 will continuously rise, will warp when heat rebound piece 42 reaches certain temperature and jump, thereby drive conducting piece 43 and remove, make conducting piece 43 and power supply swiftly separate, operate and slide in the inside of spout 52, thereby it is convenient and fast to carry out the operation, and carry out the high-speed spring 46 when carrying out the power supply fast and fast, and convenient for carrying out the operation is carried out the reset spring and the operation, and make the second rebound piece is convenient for use, and the power-up spring and the limit device is used for the power to carry out 46.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Residual current protection device, including bottom plate (1) and roof (2), its characterized in that: the novel electric power meter is characterized in that a rotating mechanism (3) is arranged inside the bottom plate (1), a protecting mechanism (4) is arranged inside the bottom plate (1), a conducting mechanism (5) is arranged inside the bottom plate (1), the protecting mechanism (4) is arranged inside the top plate (2), and two wiring boards (8) are fixedly connected to one side of the bottom plate (1);

The protection mechanism (4) comprises a third conductive plate (41), the inner wall of the top plate (2) is fixedly connected with the third conductive plate (41), one side of the third conductive plate (41) is fixedly connected with a thermal rebound piece (42), the bottom of the thermal rebound piece (42) is fixedly connected with a conductive piece (43), the inner wall of the bottom plate (1) is fixedly connected with a spring assisting rod (46) mutually matched with the thermal rebound piece (42), the top of the top plate (2) is slidably connected with a pressing rod (47), a first reset spring (45) is sleeved on the outer side of the pressing rod (47), and a limiting plate (44) is fixedly connected on the outer side of the pressing rod (47).

2. A residual current protection device according to claim 1, characterized in that: the rotating mechanism (3) comprises a stabilizing plate (32), the bottom of the top plate (2) is fixedly connected with the stabilizing plate (32), a first rotating rod (31) is connected to the inside of the stabilizing plate (32) in a rotating mode, a first bevel gear (33) is fixedly connected to one end of the first rotating rod (31), a second bevel gear (34) is connected to one side of the first bevel gear (33) in a meshed mode, a second rotating rod (38) is fixedly connected to the bottom of the second bevel gear (34), the other end of the second rotating rod (38) is connected with the bottom plate (1) in a rotating mode, a rotating plate (37) is fixedly connected to the outer side of the second rotating rod (38), a first conducting plate (35) is fixedly connected to the inner side of the bottom plate (1), a second conducting plate (39) which is mutually matched with the first conducting plate (37) is arranged on the top of the first conducting plate (35), and a second conducting plate (39) which is mutually matched with the second conducting plate (37) is fixedly connected to the inner side of the bottom plate (1).

3. A residual current protection device according to claim 1, characterized in that: the conduction mechanism (5) comprises a sliding groove (52), a sliding plate (51) matched with the rotating plate (37) is connected inside the sliding groove (52) in a sliding mode, a sliding rod (53) is fixedly connected to one side of the sliding plate (51), a second return spring (54) is sleeved on the outer side of the sliding rod (53), a fixing plate (55) is fixedly connected to one side of the second return spring (54), the bottom of the fixing plate (55) is fixedly connected with the bottom plate (1), the inside of the fixing plate (55) is connected with the sliding rod (53) in a sliding mode, and an electric communication plate (56) is fixedly connected to one end of the fixing plate (55).

4. A residual current protection device according to claim 1, characterized in that: and one side of the third conductive plate (41) is fixedly connected with a fourth conductive plate (6).

5. A residual current protection device according to claim 2, characterized in that: one side of the second conducting plate (39) is fixedly connected with an electric wire (7), and the other end of the electric wire (7) is fixedly connected with one of the wiring boards (8).

6. A residual current protection device according to claim 1, characterized in that: connecting plates (9) are fixedly connected to two sides of the bottom plate (1) and the top plate (2), and bolts (10) are connected to the four connecting plates (9) in a threaded mode.

7. A residual current protection device according to claim 1, characterized in that: the top of the bottom plate (1) is fixedly connected with a sealing gasket (11).

8. A residual current protection device according to claim 1, characterized in that: the tops of the pressing rod (47) and the first rotating rod (31) are fixedly connected with a mounting plate (12).