Electromagnetic release with power-assisted tripping and reset function and leakage circuit breaker

Abstract

The application relates to the technical field of electric leakage circuit breakers, and discloses an electromagnetic tripping device with power-assisted tripping and resetting functions and an electric leakage circuit breaker, which comprises an electric leakage tripping device, a mounting plate horizontally stacked on the electric leakage tripping device, a rotating plate for driving an opening and closing mechanism to open, which is rotationally connected to the mounting plate, the rotating plate comprising a first rotating part hinged to the mounting plate, one end of the first rotating part being provided with a rotating block extending towards the direction of a push rod of the electric leakage tripping device, the rotating block being located between the electric leakage tripping device and the opening and closing mechanism, and one end of the mounting plate close to / distant from the electric leakage tripping device being provided with an electric leakage opening assembly for driving the rotating plate to rotate, so that the electric leakage circuit breaker is improved in adaptability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of leakage circuit breakers, in particular to an electromagnetic tripping device with power-assisted tripping and resetting functions and a leakage circuit breaker. BACKGROUND

[0002] A leakage circuit breaker is an electrical device used for circuit protection. They are designed to automatically cut off the circuit in the event of an electrical leakage, overload, short circuit, or risk of electric shock, to protect the circuit, equipment, and personal safety, and prevent damage and fire risk.

[0003] In the related art, a leakage circuit breaker includes a leakage protection module, which is divided into electromagnetic and electronic types according to different tripping principles, and the safety performance of the electromagnetic leakage protection module is higher than that of the electronic leakage protection module.

[0004] The leakage protection module includes a zero-sequence current transformer and an electromagnetic tripping device, the electromagnetic tripping device includes a leakage tripping device and a linkage mechanism for transmitting and amplifying the force of the leakage tripping device, and the leakage tripping device and the linkage mechanism are arranged along the extension and retraction direction of the push rod of the leakage tripping device. When the leakage circuit breaker encounters a leakage situation, the zero-sequence current transformer drives the leakage tripping device to act, and the push rod of the leakage tripping device is linked with the linkage mechanism and drives the leakage circuit breaker to open.

[0005] The existing linkage mechanism has a large volume, so the electromagnetic tripping device has a large volume, so the leakage circuit breaker is large, resulting in a large space occupied by the leakage circuit breaker, which causes poor installation adaptability of the leakage circuit breaker. SUMMARY

[0006] In order to improve the installation adaptability of the leakage circuit breaker, the application provides an electromagnetic tripping device with power-assisted tripping and resetting functions and a leakage circuit breaker.

[0007] The electromagnetic tripping device with power-assisted tripping and resetting functions and the leakage circuit breaker provided by the application adopt the following technical solutions:

[0008] An electromagnetic tripping device with power-assisted tripping and resetting functions includes a leakage tripping device, a mounting plate is horizontally stacked on the leakage tripping device, a rotating plate for driving an opening and closing mechanism to open is rotatably connected to the mounting plate, the rotating plate includes a first rotating part hinged to the mounting plate, one end of the first rotating part is provided with a rotating block extending towards the push rod direction of the leakage tripping device, the rotating block is located between the leakage tripping device and the opening and closing mechanism, and one end of the mounting plate close to / away from the leakage tripping device is provided with a leakage opening assembly for driving the rotating plate to rotate.

[0009] Compared with the leakage circuit breaker with an external leakage protection module, the linkage mechanism can be directly installed in the leakage circuit breaker with a width of 18 mm, thereby improving the large width of the traditional electromagnetic leakage circuit breaker and making the overall size more compact.

[0010] Optionally, the opening mechanism includes a hinged rod hinged to the mounting plate and a first mounting seat provided on the mounting plate, the hinged rod includes a first hinged part hinged to the mounting plate, a power arm is provided on one side of the first hinged part close to the first mounting seat, an opening spring is provided between the first mounting seat and the power arm, the opening spring is in a compressed state, a resistance arm for driving the rotating block to rotate towards the opening and closing mechanism is provided on one side of the first hinged part close to the rotating plate, and the length of the power arm is longer than the length of the resistance arm.

[0011] By adopting the above technical scheme, the force output by the leakage release is not greater than 0.5 N, the release force required for reliable opening of the opening and closing mechanism of the leakage circuit breaker is greater than 0.5 N, when the leakage release encounters a leakage condition, the leakage release drives the rotating plate to rotate, at this time, the rotating plate rotates but cannot make the opening and closing mechanism rotate to open, the opening spring exerts force on the power arm to drive the hinged rod to rotate relative to the mounting plate, so that the resistance arm rotates towards the rotating plate, and due to the fact that the length of the power arm is longer than the length of the resistance arm, the force of the resistance arm on the rotating plate is increased through the lever principle, the rotating block is driven to rotate towards the opening and closing mechanism, the opening and closing mechanism performs an opening action, and the leakage protection effect is achieved.

[0012] Optionally, an end surface of the resistance arm is provided with a driving surface facing an end surface of the first rotating part, one side of the resistance arm facing the first rotating part includes a locking angle, an end surface of the first rotating part away from the rotating block is provided with a driving block, an end surface of the driving block facing the resistance arm is provided as a locking surface, and one side of the driving block facing the resistance arm includes a driving angle; when the opening and closing mechanism is in a closed state, the locking angle and the locking surface interfere with each other; when the leakage circuit breaker with an internal electromagnetic release occurs a leakage condition, the leakage release drives the locking angle and the locking surface to be offset, and the opening spring drives the driving surface and the driving angle to interfere with each other.

[0013] By adopting the technical scheme, the locking angle interferes with the locking surface, the drive of the opening and closing mechanism cannot be rotated, and the opening and closing mechanism is kept in the closed state; when the leakage occurs in the leakage circuit breaker with the internal electromagnetic release, the push rod of the leakage release drives the rotating plate to rotate, the locking angle no longer interferes with the locking surface, at this time, the force of the opening spring drives the hinged rod to rotate, the driving surface interferes with the driving angle, and the rotating plate is further driven to rotate by the force of the opening spring, the rotating plate drives the opening and closing mechanism to rotate, and the opening and closing mechanism performs the opening action.

[0014] Optionally, the power arm is provided with a first limiting column at the end face facing the first mounting base, the first mounting base is provided with a second limiting column at the end face facing the power arm, one end of the opening spring is sleeved outside the first limiting column, and the other end of the opening spring is sleeved outside the second limiting column.

[0015] By adopting the technical scheme, the first limiting column and the second limiting column are designed, the two ends of the opening spring are limited, the position of the opening spring is not easy to deviate when the opening spring is compressed or reset, and the force of the opening spring can effectively act on the power arm.

[0016] Optionally, the power arm is provided with a stop block for limiting the rotation of the power arm towards the first mounting base at one end of the power arm facing the first mounting base, and the stop block is located below the mounting plate.

[0017] By adopting the technical scheme, when the stop block interferes with the mounting plate during the process that the leakage reset component drives the hinged rod to reset, the power arm cannot continue to rotate towards the first mounting base, and the limiting effect is achieved.

[0018] Optionally, the mounting plate is provided with a leakage reset component for driving the rotating plate to reset at one end of the mounting plate close to / distant from the leakage release, the leakage reset component comprises an auxiliary block arranged on the first rotating part, a reset block rotatably connected to the mounting plate, and a reset rod, the reset block is located on one side of the first rotating part away from the opening and closing mechanism, the auxiliary block is located on one side of the first rotating part facing the reset block, and the reset rod is located on one side of the reset block away from the hinged rod, the reset block comprises a push block for driving the auxiliary block to rotate towards the resistance arm and a first tooth block, the reset rod comprises a second tooth block, the first tooth block and the second tooth block are meshed with each other, and one end of the reset rod away from the reset block interferes with the opening and closing mechanism.

[0019] By adopting the technical scheme, when the opening and closing mechanism drives the reset rod to rotate in the opening action, the reset rod drives the reset block to rotate, the push block interferes with the auxiliary block and drives the auxiliary block to rotate, the driving block drives the hinged rod to reset, and the opening spring is compressed and deformed.

[0020] Optionally, the end face of the mounting plate towards the reset block is provided with a second mounting seat, a reset spring is arranged between the first tooth block and the second mounting seat, and the reset spring is in a compressed state.

[0021] By adopting the technical scheme, the reset spring exerts a force on the first tooth block, the first tooth block exerts a force on the reset rod, and the reset rod and the opening and closing mechanism are kept in contact.

[0022] Optionally, the side of the first tooth block towards the second mounting seat is fixedly connected with a second limiting block, the side of the second mounting seat towards the first tooth block is fixedly connected with a first limiting block, one end of the reset spring is sleeved outside the second limiting block, and the other end of the reset spring is sleeved outside the first limiting block.

[0023] By adopting the technical scheme, the first limiting block and the second limiting block are designed to limit the two ends of the reset spring, so that the position of the reset spring is not easy to deviate when the reset spring is compressed or reset, the force of the reset spring is always exerted on the first tooth block, and the reset rod and the opening and closing mechanism are kept in contact.

[0024] Optionally, the end face of the mounting plate towards the reset rod is fixedly connected with a blocking column, and the blocking column is used to limit the rotation of the reset rod towards the opening and closing mechanism.

[0025] By adopting the technical scheme, when the reset rod and the blocking column are in contact, the blocking column limits the reset rod from continuing to rotate, and has a limiting effect.

[0026] A residual current circuit breaker includes a shell, a residual current release, an opening and closing mechanism, and an electromagnetic release with power-assisted release and reset functions are arranged in the shell, and the electromagnetic release is used to assist the residual current release in opening the opening and closing mechanism.

[0027] By adopting the technical scheme, compared with a residual current circuit breaker with an external residual current protection module, the linkage mechanism of the present application can be directly installed in a residual current circuit breaker with a width of 18 mm, which improves the disadvantage of a large width of a traditional electromagnetic residual current circuit breaker and makes the overall volume more compact; compared with a residual current circuit breaker with an internal residual current protection module, most of the parts of the linkage mechanism of the present application are arranged on one side of the installation direction of the residual current release, which reduces the parts of the linkage mechanism between the residual current release and the opening and closing mechanism, reduces the space occupied by the linkage mechanism along the extension direction of the push rod of the residual current circuit breaker, and improves the installation adaptability of the residual current circuit breaker.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. Compared with the leakage circuit breaker with external leakage protection module, the linkage mechanism of the present application can be directly installed in the leakage circuit breaker with a width of 18mm, improving the disadvantage of large width of the traditional electromagnetic leakage circuit breaker, and the overall volume is more compact; compared with the leakage circuit breaker with built-in leakage protection module, most of the parts of the linkage mechanism of the present application are arranged on one side of the installation direction of the leakage release, reducing the parts of the linkage mechanism between the leakage release and the opening and closing mechanism, reducing the space occupied by the linkage mechanism along the extension direction of the push rod of the leakage circuit breaker, and improving the installation adaptability of the leakage circuit breaker.

[0030] 2. When the opening and closing mechanism performs the opening action, the opening and closing mechanism applies a force to the reset rod, the reset rod drives the reset block to rotate, the reset block drives the reset plate to reset, and the reset plate resets the hinged rod, the opening spring compression deformation, so that the leakage opening assembly works next time when the leakage circuit breaker with internal electromagnetic release appears leakage. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a structural schematic diagram of the present application embodiment;

[0033] Figure 2 is a structural schematic diagram highlighting the leakage opening assembly;

[0034] Figure 3 is a structural schematic diagram highlighting the leakage reset assembly.

[0035] Label: 1, mounting plate; 11, first cylinder; 12, round pipe; 13, connecting pin; 14, second cylinder; 15, third cylinder; 16, fourth cylinder; 17, second mounting seat; 18, first limiting block; 19, blocking column; 2, rotating plate; 21, rotating block; 22, first rotating part; 221, first circular hole; 23, second rotating part; 231, second circular hole; 24, driving block; 241, driving angle; 242, locking surface; 3, leakage tripping assembly; 31, first mounting seat; 311, second limiting column; 32, hinged rod; 321, first hinged part; 3211, first hinged hole; 322, power arm; 3221, first limiting column; 3222, stop block; 323, resistance arm; 3231, locking angle; 3232, driving surface; 33, tripping spring; 4, leakage reset assembly; 41, reset block; 411, second hinged part; 4111, second hinged hole; 412, first tooth block; 413, push block; 42, reset rod; 421, third hinged part; 4211, third hinged hole; 422, second tooth block; 423, reset arm; 424, second limiting block; 425, reset spring; 43, auxiliary block; 5, leakage release; 6, opening and closing mechanism; 61, hinged shaft. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The present application is further described in detail.

[0037] The embodiment discloses an electromagnetic release with power-assisted tripping and reset function and a leakage circuit breaker. Figure 1 A leakage circuit breaker comprises a shell, an electromagnetic release and an opening and closing mechanism 6 arranged in the shell. The electromagnetic release comprises a leakage release 5 and a linkage mechanism. When the leakage circuit breaker has a leakage, the linkage mechanism assists the leakage release 5 to trip the opening and closing mechanism 6. The opening and closing mechanism 6 comprises a hinged shaft 61, and the opening and closing mechanism 6 is rotated relative to the shell through the hinged shaft 61.

[0038] Referring to Figure 1 and Figure 2 The linkage mechanism comprises a mounting plate 1, a rotating plate 2, a leakage tripping assembly 3 and a leakage reset assembly 4. The mounting plate 1 is arranged in the shell, and the mounting plate 1 is horizontally stacked on the leakage release 5. In the embodiment, the leakage tripping assembly 3 and the leakage reset assembly 4 are arranged on the side of the mounting plate 1 away from the leakage release 5. In other embodiments, the leakage tripping assembly 3 is arranged on the side of the mounting plate 1 facing the leakage release 5, and the leakage reset assembly 4 is arranged on the side of the mounting plate 1 away from / towards the leakage release 5; or the leakage tripping assembly 3 is arranged on the side of the mounting plate 1 away from the leakage release 5, and the leakage reset assembly 4 is arranged on the side of the mounting plate 1 facing the leakage release 5.

[0039] Referring toFigure 1 and Figure 2 The rotating plate 2 is rotatably connected to the mounting plate 1. The rotating plate 2 comprises a rotating block 21, a first rotating part 22 and a second rotating part 23. The rotating block 21 is located between the leakage tripping device 5 and the opening and closing mechanism 6. The first rotating part 22 and the second rotating part 23 are fixedly connected to the same end surface of the rotating block 21. The first rotating part 22 is located at one end of the mounting plate 1, and the second rotating part 23 is located at the end of the mounting plate 1 away from the first rotating part 22.

[0040] Referring to Figure 2 The end surface of the mounting plate 1 facing the first rotating part 22 is fixedly connected with a first cylinder 11, and the end surface of the first rotating part 22 facing the mounting plate 1 is provided with a first circular hole 221 for inserting the first cylinder 11. The end surface of the first rotating part 22 away from the rotating block 21 is fixedly connected with a driving block 24.

[0041] Referring to Figure 2 The end surface of the second rotating part 23 facing the mounting plate 1 is provided with a second circular hole 231, and a connecting pin 13 is arranged in the second circular hole 231. The end of the mounting plate 1 facing the second rotating part 23 is fixedly connected with a circular tube 12 coaxially arranged with a second cylinder 14. The end of the circular tube 12 away from the mounting plate 1 is provided with a slot. One end of the connecting pin 13 is inserted into the slot and is in interference fit with the inner wall of the slot, so that the rotating plate 2 is connected with the mounting plate 1.

[0042] Referring to Figure 1 and Figure 2 When the opening and closing mechanism 6 in the leakage circuit breaker is in the closing state, the rotating block 21 is in contact with the push rod of the leakage tripping device 5. When the leakage circuit breaker has a leakage, the push rod of the leakage tripping device 5 drives the rotating plate 2 to rotate towards the opening and closing mechanism 6.

[0043] Referring to Figure 1 and Figure 2 The leakage opening assembly 3 is used to apply force to the rotating plate 2. The leakage opening assembly 3 comprises a first mounting seat 31, a hinged rod 32 and an opening spring 33. The side of the mounting plate 1 facing the first rotating part 22 is fixedly connected with a second cylinder 14, and the second cylinder 14 is located on the side of the first cylinder 11 away from the opening and closing mechanism 6. The hinged rod 32 is sleeved on the second cylinder 14 and can rotate around the axis of the second cylinder 14.

[0044] Referring to Figure 2 and Figure 3 The hinged rod 32 comprises an integrally formed first hinged part 321, a power arm 322 and a resistance arm 323. The first hinged part 321 is provided with a first hinged hole 3211 for inserting the second cylinder 14.

[0045] Referring to Figure 2 andFigure 3 The resistance arm 323 is located on one side of the first hinged part 321 close to the rotating plate 2. The resistance arm 323 is located below the first rotating part 22. The resistance arm 323 is provided with a locking corner 3231 on the side facing the first rotating part 22, and the end surface of the resistance arm 323 opposite to the first rotating part 22 is provided with a driving surface 3232 connected with the locking corner 3231.

[0046] Referring to Figure 2 and Figure 3 The driving block 24 is provided with a driving corner 241 on the side facing the resistance arm 323, and the end surface of the driving block 24 opposite to the resistance arm 323 is provided with a locking surface 242 connected with the driving corner 241.

[0047] Referring to Figure 2 and Figure 3 The power arm 322 is located on the side of the first hinged part 321 away from the rotating plate 2, and the length of the power arm 322 is longer than that of the resistance arm 323. The upper end surface of the power arm 322 is fixedly connected with a first limiting column 3221. The first mounting seat 31 is located on the side of the second cylinder 14 away from the first cylinder 11, and the first mounting seat 31 is located above the power arm 322. The end surface of the first mounting seat 31 facing the power arm 322 is fixedly connected with a second limiting column 311.

[0048] Referring to Figure 2 and Figure 3 The end surface of the power arm 322 facing the first mounting seat 31 is fixedly connected with a stop block 3222, and the stop block 3222 is located below the mounting plate 1. When the stop block 3222 is in contact with the mounting plate 1, the rotation of the power arm 322 towards the first mounting seat 31 is limited.

[0049] Referring to Figure 1 and Figure 2 The disconnecting spring 33 is arranged between the first mounting seat 31 and the power arm 322, one end of the disconnecting spring 33 is sleeved outside the first limiting column 3221, and the other end of the disconnecting spring 33 is sleeved outside the second limiting column 311. The disconnecting spring 33 is in a compressed state, and the disconnecting spring 33 applies a force to the power arm 322, so that the resistance arm 323 rotates towards the rotating plate 2. Since the length of the power arm 322 is longer than that of the resistance arm 323, when the disconnecting spring 33 applies a force to the power arm 322, the force of the resistance arm 323 to the driving block 24 is increased through the principle of leverage, that is, the force of the rotating plate 2 to the disconnecting and connecting mechanism 6 is increased, so that the disconnecting and connecting mechanism 6 smoothly performs the disconnecting action.

[0050] Referring to Figure 1 and Figure 3When there is no leakage in the leakage circuit breaker, the rotating block 21 is in contact with the push rod of the leakage release 5, and the locking angle 3231 is in contact with the locking surface 242, so the leakage tripping assembly 3 cannot drive the rotating plate 2 to rotate.

[0051] With reference to Figure 1 and Figure 3 When there is leakage in the leakage circuit breaker, the push rod of the leakage release 5 drives the rotating block 21 to rotate, so that the locking angle 3231 is no longer in contact with the locking surface 242. At this time, the force of the tripping spring 33 on the power arm 322 drives the resistance arm 323 to rotate towards the driving block 24, so that the driving surface 3232 is in contact with the driving angle 241, and the rotating block 21 continues to be driven to rotate towards the opening and closing mechanism 6, so that the rotating block 21 is in contact with the opening and closing mechanism 6 and drives the opening and closing mechanism 6 to rotate around the hinge shaft 61, realizing the opening action of the opening and closing mechanism 6. In the above opening action, the contact position of the rotating block 21 and the opening and closing mechanism 6 is below the hinge shaft 61.

[0052] With reference to Figure 1 and Figure 2 The leakage reset assembly 4 is used to drive the rotating plate 2 and the hinge rod 32 to reset. The leakage reset assembly 4 includes a reset rod 42, a reset block 41 and an auxiliary block 43. The side of the mounting plate 1 facing the leakage tripping assembly 3 is fixedly connected with a third cylinder 15 and a fourth cylinder 16. The third cylinder 15 is located on the side of the second cylinder 14 away from the opening and closing mechanism 6. The fourth cylinder 16 is located on the side of the third cylinder 15 away from the hinge rod 32.

[0053] With reference to Figure 2 and Figure 3 The reset block 41 is sleeved on the third cylinder 15, and the reset block 41 can rotate around the axis of the third cylinder 15. The reset block 41 includes an integrally formed second hinge part 411, a first tooth block 412 and a push block 413. The second hinge part 411 is provided with a second hinge hole 4111 for inserting the third cylinder 15. The first tooth block 412 is located on the side of the first hinge part 321 away from the power arm 322. The push block 413 is located on the side of the second hinge part 411 facing the third cylinder 15.

[0054] With reference to Figure 2 and Figure 3 The auxiliary block 43 is fixedly connected to the end face of the first rotating part 22 facing the third cylinder 15, and the auxiliary block 43 is located on the side of the push block 413 facing the resistance arm 323. The auxiliary block 43 is located on the rotating path of the push block 413.

[0055] With reference to Figure 2 and Figure 3The reset lever 42 is sleeved outside the fourth cylinder 16 and can rotate around the circumference of the fourth cylinder 16. The reset lever 42 comprises a third hinge part 421, a second tooth block 422 and a reset arm 423 which are integrally formed. The third hinge part 421 is provided with a third hinge hole 4211 for inserting the fourth cylinder 16.

[0056] Referring to Figure 1 and Figure 2 The second tooth block 422 is located on the side of the third hinge part 421 facing the hinge lever 32, and the second tooth block 422 is engaged with the first tooth block 412. The reset arm 423 is located on the side of the third hinge part 421 away from the second tooth block 422, and the end of the reset arm 423 away from the third hinge part 421 abuts against the opening and closing mechanism 6. The abutting position of the reset arm 423 and the opening and closing mechanism 6 is above the hinge shaft 61.

[0057] When the opening and closing mechanism 6 performs the opening operation, the opening and closing mechanism 6 pushes the reset arm 423 to rotate the reset lever 42. Since the first tooth block 412 and the second tooth block 422 are engaged with each other, the reset lever 42 drives the reset block 41 to rotate, so that the push block 413 rotates and drives the auxiliary block 43 to move, so that the rotating plate 2 rotates and drives the push rod of the ground fault relay 5 to reset. In addition, since the driving angle 241 abuts against the driving surface 3232, the hinge lever 32 is driven to rotate and reset, and the opening spring 33 is compressed again, thereby preparing for the next ground fault of the ground fault circuit breaker.

[0058] Referring to Figure 2 and Figure 3 The mounting plate 1 is fixedly connected with a second mounting seat 17 on the side facing the ground fault opening assembly 3. The second mounting seat 17 is located on the side of the reset block 41 facing the second cylinder 14 and on the side of the second cylinder 14 away from the resistance arm 323. The second mounting seat 17 is fixedly connected with a first limiting block 18 on the end face facing the first tooth block 412.

[0059] Referring to Figure 1 and Figure 2 The first tooth block 412 is fixedly connected with a second limiting block 424 on the side facing the second mounting seat 17. A reset spring 425 is arranged between the first tooth block 412 and the second mounting seat 17. One end of the reset spring 425 is sleeved outside the first limiting block 18, and the other end of the reset spring 425 is sleeved outside the second limiting block 424. The reset spring 425 is in a compressed state, and the reset spring 425 applies a force to the first tooth block 412 to drive the first tooth block 412 to rotate away from the second mounting seat 17, so that the second tooth block 422 rotates away from the second mounting seat 17, that is, the reset arm 423 rotates toward the opening and closing mechanism 6, so that the reset arm 423 abuts against the opening and closing mechanism 6.

[0060] Referring toFigure 1 and Figure 2 The mounting plate 1 is fixedly connected with a blocking column 19 at the end face of the fourth cylinder 16. The blocking column 19 is located at the side of the fourth cylinder 16 away from the hinged rod 32 and at the side of the reset arm 423 facing the opening and closing mechanism 6. When the reset arm 423 is in contact with the blocking column 19, the rotation of the reset arm 423 towards the opening and closing mechanism 6 is limited.

[0061] The implementation principle of the electromagnetic release and the residual current circuit breaker with the assisted release and reset functions is as follows: when the residual current circuit breaker has a leakage, the push rod of the residual current release 5 extends to drive the rotating block 21 to rotate towards the opening and closing mechanism 6, so that the locking angle 3231 no longer contacts the locking surface 242. At this time, the force exerted by the opening spring 33 on the power arm 322 drives the resistance arm 323 to move towards the second cylinder 14, so that the driving surface 3232 contacts the driving angle 241, and the rotating block 21 further rotates towards the opening and closing mechanism 6. The rotating block 21 drives the opening and closing mechanism 6 to rotate around the axis of the hinged shaft 61 of the opening and closing mechanism 6, thereby realizing the opening action.

[0062] During the opening action of the opening and closing mechanism 6, the opening and closing mechanism 6 exerts a force on the reset arm 423, so that the second tooth block 422 rotates towards the second mounting seat 17. The second tooth block 422 drives the reset block 41 to rotate, so that the push block 413 contacts the auxiliary block 43 during the rotation, and drives the rotating plate 2 to rotate around the second cylinder 14. During the rotation of the rotating block 21 towards the push rod of the residual current release 5, the rotating block 21 drives the push rod of the residual current release 5 to retract. The driving angle 241 contacts the driving surface 3232, and the hinged rod 32 is reset during the rotation of the rotating plate 2, so that the locking angle 3231 contacts the locking surface 242 again.

[0063] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the usual meaning understood by a person with ordinary skill in the art to which the present application belongs. The terms "first", "second", "third" and the like used in the specification and claims of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "including", "containing" and the like mean that the elements or objects appearing before "including" or "containing" cover the elements or objects listed after "including" or "containing" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0064] The above merely provides the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. An electromagnetic release with assisted tripping and reset function, comprising an electric leakage release (5), characterized in that: The mounting plate (1) is horizontally stacked on the electric leakage release (5), a rotating plate (2) for driving the opening and closing mechanism (6) to open is rotatably connected to the mounting plate (1), the rotating plate (2) comprises a first rotating part (22) hinged to the mounting plate (1), one end of the first rotating part (22) is provided with a rotating block (21) extending towards the pushing rod direction of the electric leakage release (5), the rotating block (21) is located between the electric leakage release (5) and the opening and closing mechanism (6), one end of the mounting plate (1) close / far away from the electric leakage release (5) is provided with an electric leakage opening assembly (3) for driving the rotating plate (2) to rotate; The electric leakage opening assembly (3) comprises a hinged rod (32) hinged to the mounting plate (1) and a first mounting seat (31) provided on the mounting plate (1), the hinged rod (32) comprises a first hinged part (321) hinged to the mounting plate (1), one side of the first hinged part (321) close to the first mounting seat (31) is provided with a power arm (322), the first mounting seat (31) and the power arm (322) are provided with an opening spring (33) therebetween, the opening spring (33) is in a compressed state, one side of the first hinged part (321) close to the rotating plate (2) is provided with a resistance arm (323) for driving the rotating block (21) to rotate towards the opening and closing mechanism (6); The end surface of the resistance arm (323) is provided with a driving surface (3232) facing the end surface of the first rotating part (22), one side of the resistance arm (323) facing the first rotating part (22) comprises a locking angle (3231), the end surface of the first rotating part (22) away from the rotating block (21) is provided with a driving block (24), the end surface of the driving block (24) facing the resistance arm (323) is provided as a locking surface (242), one side of the driving block (24) facing the resistance arm (323) comprises a driving angle (241); when the opening and closing mechanism (6) is in a closed state, the locking angle (3231) is in contact with the locking surface (242); when the electric leakage release (5) encounters an electric leakage, the electric leakage release (5) drives the locking angle (3231) to be offset from the locking surface (242), the opening spring (33) drives the driving surface (3232) to be in contact with the driving angle (241); One end of the mounting plate (1) close / far away from the electric leakage release (5) is provided with an electric leakage reset assembly (4) for driving the rotating plate (2) to reset.

2. The electromagnetic release with assisted tripping and reset function according to claim 1, characterized in that: The length of the power arm (322) is longer than the length of the resistance arm (323).

3. The electromagnetic release with power assisted tripping and reset function according to claim 1, characterized in that: The end surface of the power arm (322) facing the first mounting seat (31) is provided with a first limiting column (3221), the end surface of the first mounting seat (31) facing the power arm (322) is provided with a second limiting column (311), one end of the opening spring (33) is sleeved outside the first limiting column (3221), the other end of the opening spring (33) is sleeved outside the second limiting column (311).

4. The electromagnetic release with power assisted tripping and reset function according to claim 1, characterized in that: The power arm (322) is provided with a stopper (3222) at one end of the first mounting base (31) for limiting the rotation of the power arm (322) towards the first mounting base (31), and the stopper (3222) is located below the mounting plate (1).

5. The electromagnetic release with power assisted tripping and reset function according to claim 1, characterized in that: The electric leakage reset assembly (4) comprises an auxiliary block (43) arranged on the first rotating part (22), a reset block (41) and a reset rod (42) rotatably connected to the mounting plate (1), the reset block (41) is located on the side of the first rotating part (22) away from the opening and closing mechanism (6), the auxiliary block (43) is located on the side of the first rotating part (22) towards the reset block (41), and the reset rod (42) is located on the side of the reset block (41) away from the hinged rod (32); the reset block (41) comprises a push block (413) for driving the auxiliary block (43) to rotate towards the resistance arm (323) and a first tooth block (412), the reset rod (42) comprises a second tooth block (422), the first tooth block (412) and the second tooth block (422) are in meshing engagement, and one end of the reset rod (42) away from the reset block (41) is in abutment with the opening and closing mechanism (6).

6. The electromagnetic release with power assisted tripping and reset function according to claim 5, characterized in that: The mounting plate (1) is provided with a second mounting base (17) at the end face towards the reset block (41), and a reset spring (425) is arranged between the first tooth block (412) and the second mounting base (17), and the reset spring (425) is in a compressed state.

7. The electromagnetic release with power assisted tripping and reset function according to claim 6, characterized in that: The first tooth block (412) is fixedly connected with a second limiting block (424) on the side towards the second mounting base (17), the second mounting base (17) is fixedly connected with a first limiting block (18) on the side towards the first tooth block (412), one end of the reset spring (425) is sleeved outside the second limiting block (424), and the other end of the reset spring (425) is sleeved outside the first limiting block (18).

8. The electromagnetic release with power assisted tripping and reset function according to claim 1, characterized in that: The mounting plate (1) is fixedly connected with a blocking column (19) at the end face towards the reset rod (42), and the blocking column (19) is used for limiting the rotation of the reset rod (42) towards the opening and closing mechanism (6).

9. An arc fault circuit interrupter, comprising: The housing is provided with the electric leakage release (5), the opening and closing mechanism (6) and the electromagnetic release with the reset function according to any one of claims 1-8, and the electromagnetic release is used for assisting the electric leakage release (5) in the opening operation of the opening and closing mechanism (6).

Images