CN216487924U - Leakage protection device of leakage circuit breaker - Google Patents

Abstract

The utility model provides an electric leakage protection device of an electric leakage circuit breaker, which comprises an electric leakage tripping mechanism arranged in an electric leakage shell and used for driving a tripping shaft to act, wherein the electric leakage tripping mechanism comprises an electric leakage tripper, a transmission bracket and a reset indicating button, the electric leakage tripper is provided with a driving rod which is connected on the transmission bracket in a penetrating way, the transmission bracket rotates forward under the driving of the driving rod and triggers the tripping shaft to act so as to realize the tripping and separating action of the circuit breaker, and the reset indicating button is popped out at the top of the electric leakage shell to indicate that a user circuit breaker trips due to an electric leakage fault, and the transmission bracket rotates reversely to reset when the reset indicating button is pressed, and is contained in the electric leakage shell in a limiting way when the transmission bracket forms a limiting matching way, so as to indicate that the circuit breaker relieves the electric leakage fault and can normally close the circuit, the electric leakage tripping mechanism has simple structure and has the functions of electric leakage protection and electric leakage indication, the use safety of the product is improved.

Description

Leakage protection device of leakage circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus technical field specifically relates to a leakage circuit breaker's earth leakage protection device.

Background

The earth leakage breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time, and has overload, short circuit, and earth leakage protection functions.

The structure of current earth leakage circuit breaker has the modularization to assemble or the integral type equipment is two kinds, pin-connected panel earth leakage circuit breaker includes general circuit breaker body and the earth leakage protection module that has the electric leakage release, and all be provided with the tripping device (operating device promptly) that is used for separating brake and combined floodgate in circuit breaker part and electric leakage release part, this kind of earth leakage protection module is as circuit breaker N utmost point usually and uses, two sets of tripping device pass through transfer line linkage cooperation, can drive the tripping device synchronization action on the circuit breaker body when electric leakage release drive tripping device moves promptly, thereby can realize the electric leakage of earth leakage circuit breaker, short circuit or overload protection function.

In order to make the worker know the reason why the leakage breaker is tripped, the existing leakage breaker is provided with a leakage indicating device for indicating the leakage tripping of the breaker. For example, chinese patent document CN213877980U discloses a reset indicating device of an electrical leakage breaker, which includes a housing, a tripping mechanism and a latch, wherein a reset indicating button and a reset spring are movably disposed on the housing, a locking groove engaged with the latch is disposed on the reset indicating button, a linkage assembly for driving the latch to enter or leave the locking groove is disposed between the tripping mechanism and the latch, the reset indicating button has a first indicating position and a second indicating position during an operation process, when the latch is located in the locking groove, the reset indicating button is in the first indicating position and the tripping mechanism is in a non-tripping state, and when the latch is located outside the locking groove, the reset indicating button is in the second indicating position, the tripping mechanism is in the tripping state and limits the tripping mechanism from being reset to the non-tripping state. According to the structure of the reset indicating device, the action of the reset indicating button needs to be matched with the tripping mechanism and the lock catch, the overall structure is complex, the occupied space is large, the number of assembled parts is large, the assembly in the shell is complex, and the production and manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the indicating button that resets among the leakage indicating device of prior art and need use with tripping device and hasp cooperation, overall structure is complicated, and occupation space is big again, assembles comparatively loaded down with trivial details complicacy, the problem that manufacturing cost is high.

In order to solve the above problems, the present invention provides an earth leakage protection device of an earth leakage circuit breaker, which comprises an earth leakage casing installed at one side of a circuit breaker body, a trip shaft movably inserted in the earth leakage casing and linked with an operating mechanism in the circuit breaker body, and an earth leakage trip mechanism arranged in the earth leakage casing and used for driving the trip shaft to act so as to trigger the circuit breaker body to trip and open a brake; the electric leakage tripping mechanism comprises:

a leakage release having a driving lever that linearly reciprocates when triggered;

the transmission bracket is rotatably arranged between the electric leakage tripper and the tripping shaft, and the tripping shaft is positioned on a rotating path of the transmission bracket; the driving rod is connected to the transmission bracket in a penetrating manner and drives the transmission bracket to rotate in the positive direction when moving to one side of the electric leakage release, so that the transmission bracket drives the tripping shaft to act;

the reset indicating button is elastically and movably arranged on the top of the leakage shell and drives the transmission bracket to reversely rotate when being pressed; the reset indicating button is provided with a locking position which forms limit fit with the transmission bracket when the transmission bracket rotates reversely and a separation position which releases the limit fit with the transmission bracket when the transmission bracket rotates forwardly; the reset indication button is accommodated in the earth leakage housing in a limited position and is ejected out of the top of the earth leakage housing in a separated position.

As a preferred scheme, the transmission support is including setting up the swash plate structure on its one side, swash plate structure orientation trip shaft one side slope sets up, reset indicate button be equipped with relative slider structure from top to bottom with the swash plate structure, slider structure cooperation slip butt when resetting to indicate button to push down is in structural the swash plate, in order to drive the transmission support antiport.

As a preferred scheme, one end of the sliding block structure is provided with a wedge-shaped surface matched with the inclined plate structure.

As a preferable scheme, an arc-shaped hole for the trip shaft to slide is formed in the leakage shell, the transmission support comprises a shift lever part extending from the inclined plate structure to the arc-shaped hole, a certain included angle is formed between the shift lever part and the inclined plate structure, and the trip shaft slides along the arc-shaped hole under the driving of the shift lever part and triggers the operating mechanism to trip.

As a preferable scheme, a limit structure for forming limit matching is arranged between the reset indicating button and the transmission bracket, the limit structure comprises a limit hole arranged on the transmission bracket and a limit hook correspondingly arranged at the bottom of the slider structure, the limit hook is inserted into the limit hole in the process that the reset indicating button drives the transmission bracket to rotate reversely, and is withdrawn from the limit hole in the process that the transmission bracket rotates forwards.

As a preferable scheme, the limiting hook is in an L-shaped structure and has an arc end facing the limiting hole.

As a preferred scheme, the instruction button that resets includes the button body, and sets up the constant head tank in button body one side, and holds reset spring in the constant head tank, slider structure body coupling is in the bottom side of button body, electric leakage casing top is provided with suitable slidable mounting the button guiding hole of button body, be equipped with the cooperation on the lateral wall of button guiding hole stretch into to location boss in the constant head tank, the spacing setting in reset spring both ends is in location boss with between the constant head tank.

As a preferred scheme, the transmission support includes rotate connect in the pivot portion of electric leakage casing, and with the support panel that pivot portion links to each other, and set up on the support panel with the through-hole structure that the actuating lever links to each other, swash plate structural connection is in on the side of support panel, the actuating lever tip is provided with the cooperation and supports the support panel dorsad spacing fixture block on the side of electric leakage release.

As a preferable scheme, the leakage testing device further comprises a testing button mechanism and a control circuit board, the testing button mechanism is arranged on the leakage shell, the testing button mechanism comprises a testing button which is elastically arranged on the top of the leakage shell, and two trigger electric pieces which are oppositely arranged in a clamping groove in the leakage shell, the two trigger electric pieces are respectively connected to an electric connector at one end of the leakage shell through a line, the electric connector is fixed on the control circuit board, and the testing button drives the trigger electric pieces to contact and generate an action current signal when being pressed.

As a preferred scheme, the electric leakage shell consists of a bottom shell and a shell cover, the test button mechanism and the electric leakage tripping mechanism are adjacently arranged in the bottom shell at intervals, and the test button and the reset indication button are oppositely positioned at two ends of the electric leakage tripping device.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. the utility model provides an electric leakage circuit breaker leakage protection device, the leakage tripping device is composed of a leakage tripping device, a transmission bracket and a reset indicating button, the transmission bracket is rotatably arranged between the leakage tripping device and a tripping shaft, the leakage tripping device drives the transmission bracket to rotate positively through a driving rod when the leakage fault occurs, the transmission bracket drives the tripping action in the rotating process to realize the tripping and separating action of the circuit breaker, at the moment, the reset indicating button and the transmission bracket remove the spacing matching and pop out the top of the leakage shell to play a role of indicating the user to trip the circuit breaker due to the leakage fault, because the tripping shaft is blocked by the transmission bracket, the circuit breaker can not normally close, the reset indicating button needs to be pressed, the reset indicating button drives the transmission bracket to rotate reversely to reset when being pressed, the reset indicating button is limited and accommodated in the leakage shell and cannot bounce upwards so as to indicate that the breaker can normally switch on when the leakage fault is relieved; the leakage tripping mechanism is matched with the tripping shaft to trigger the tripping and brake-separating of the circuit breaker, the matching transmission is reliable, the original tripping mode that the tripping structure is formed by the tripping buckle, the lock catch and other components arranged in the shell is avoided, the structure is simplified, the leakage protection and leakage indication functions are realized, and the use safety of the product is improved.

2. The utility model provides an among the earth leakage circuit breaker's earth leakage protection device, according to be provided with swash plate structure on one side edge of transmission support to and the correspondence is provided with the slider structure on the instruction button that resets, this kind of structure sets up, drives when the instruction button that resets pushes down slider structure slip butt is structural at the swash plate, and the direction cooperation through swash plate structure and slider structure is used for driving transmission support antiport, thereby realizes the action that resets of transmission support, the transmission support after resetting no longer restricts the combined floodgate action of trip shaft, can operate the circuit breaker and carry out free divide-shut brake operation.

3. The utility model provides an among leakage circuit breaker's earth leakage protection device, limit structure is including setting up the spacing hole on the transmission support to and set up the spacing hook in the sliding construction bottom, when pressing down reset indication button is with drive transmission support antiport, the slider structure drives along with reset indication button pushes down spacing hook is close to spacing hole gradually, and the transmission support can drive in rotating the process simultaneously spacing hole and spacing hook are close to each other, finally make spacing hook inserts form spacing cooperation in the spacing hole, and will the transmission support with reset indication button keeps the relative position locking, plays limiting displacement to the instruction button that resets that is in the state of pressing, thereby the restriction reset indication button upwards pops out leakage casing top.

4. The utility model provides an among leakage circuit breaker's earth leakage protection device, through set up reset spring in the constant head tank at the button body, this button body slides and sets up in the button guiding hole at electric leakage casing top, stretches into the location boss to the constant head tank in through setting up on the lateral wall of button guiding hole, will reset spring's both ends are spacing between location boss and constant head tank, and the design is right like this reset spring plays spacing installation effect on the button body, and installation stability is good, and reset indicator button is pressed down the edge can extrude when the button guiding hole removes reset spring, when reset indicator button with the spacing cooperation of transmission support contact makes, and it can reset spring's effect rebound and pop out at electric leakage casing top, plays the effect that the instruction took place electric leakage trouble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.

Fig. 1 is a schematic perspective view of the earth leakage protection device of the earth leakage circuit breaker of the present invention;

fig. 2 is a schematic view of the internal structure of the earth leakage protection device of the present invention;

fig. 3 is a schematic structural view of the leakage tripping mechanism of the present invention;

fig. 4 is a schematic structural diagram of the reset indicating button of the present invention;

fig. 5 is a schematic structural view of the leakage casing of the present invention;

description of reference numerals: 1. a circuit breaker body; 2. a leakage housing; 21. a button guide hole; 22. positioning the boss; 3. an electric leakage release; 31. a drive rod; 32. a limiting clamping block; 4. a transmission bracket; 40. a bracket panel; 41. an inclined plate structure; 42. a poke rod part; 43. a rotating shaft part; 44. a via structure; 5. a reset indication button; 51. a slider structure; 52. a wedge-shaped surface; 53. positioning a groove; 54. a return spring; 6. tripping the shaft; 7. a limiting structure; 71. a limiting hook; 72. a limiting hole; 8. a test button mechanism; 81. test button, 82, trigger electric piece; 9. and a control circuit board.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example 1

The embodiment provides a leakage protection device of a leakage circuit breaker as shown in fig. 1-5, which comprises a leakage shell 2 installed at one side of a breaker body 1, a trip shaft 6 movably arranged in the leakage shell 2 in a penetrating manner and linked with an operating mechanism in the breaker body 1, and a leakage trip mechanism arranged in the leakage shell 2 and used for driving the trip shaft 6 to act so as to trigger the breaker body 1 to trip and open a brake; the electric leakage tripping mechanism comprises:

a leakage release 3 having a driving lever 31 that linearly reciprocates when triggered;

the transmission bracket 4 is rotatably arranged between the electric leakage tripper 3 and the tripping shaft 6, and the tripping shaft 6 is positioned on a rotating path of the transmission bracket 4; the driving rod 31 is connected to the transmission bracket 4 in a penetrating manner, and drives the transmission bracket 4 to rotate in the positive direction when moving to one side of the leakage tripping device 3, so that the transmission bracket 4 drives the tripping shaft 6 to act;

the reset indicating button 5 is elastically and movably arranged at the top of the leakage shell 2 and drives the transmission bracket 4 to reversely rotate when being pressed; the reset indicating button 5 is provided with a locking position which forms limit fit with the transmission bracket 4 when rotating in the reverse direction and a separation position which releases the limit fit with the transmission bracket 4 when rotating in the forward direction; the reset indicating button 5 is limitedly accommodated in the earth leakage housing 2 in a locking position, and is ejected out of the top of the earth leakage housing 2 in a separating position.

The magnetic ring module and the operating mechanism are not arranged in the earth leakage protection device, but the magnetic ring module is used as an independent earth leakage detection module to be arranged at the wire outlet end of the circuit breaker body 1, for example, A in figure 1 represents the earth leakage detection module, so that the width and the volume of the earth leakage protection device can be reduced, and the earth leakage protection device can be well matched with a single-pole or multi-pole earth leakage circuit breaker for use.

The above embodiment is the core technical solution of this embodiment, according to the leakage tripping mechanism, the leakage tripping mechanism is composed of a leakage tripping device 3, a transmission bracket 4 and a reset indication button 5, the transmission bracket 4 is rotatably disposed between the leakage tripping device 3 and a tripping shaft 6, the leakage tripping device 3 drives the transmission bracket 4 to rotate forward through a driving rod 31 when a leakage fault occurs, the transmission bracket 4 drives the tripping operation during the rotation process to realize the tripping and tripping operation of the circuit breaker, at this time, the reset indication button 5 is disengaged from the transmission bracket 4 and pops out of the top of the leakage housing 2 to indicate a user that the circuit breaker trips due to the leakage fault, since the tripping shaft 6 is blocked by the transmission bracket 4 and is in a sliding-buckled state, the circuit breaker cannot be normally closed, the reset indication button 5 needs to be pressed, the reset indication button 5 drives the transmission bracket 4 to rotate reversely to reset when pressed, the reset indicating button 5 is contained in the leakage shell 2 in a limited way and cannot bounce upwards so as to indicate that the leakage breaker relieves the leakage fault and can normally switch on; the leakage tripping mechanism is matched with the tripping shaft 6 to trigger tripping and tripping of the circuit breaker, the matching transmission is reliable, the original tripping mode that the tripping structure is formed by the tripping buckle, the lock catch and other parts arranged in the shell is avoided, the structure is simplified, the leakage protection and leakage indication functions are realized, and the use safety of the product is improved.

The specific arrangement of the transmission bracket 4 and the reset indication button 5 will be described in detail with reference to fig. 2-5:

the transmission bracket 4 comprises an inclined plate structure 41 arranged on the side edge of one side of the transmission bracket 4, the inclined plate structure 41 is arranged towards one side of the trip shaft 6 in an inclined manner, a slider structure 51 which is opposite to the inclined plate structure 41 from top to bottom is arranged on the reset indicating button 5, one end of the slider structure 51 is provided with a wedge-shaped surface 52 which is matched with the inclined plate structure 41, so that the slider structure 51 is better in contact effect with the inclined plate structure 41 in a guide sliding manner, the sliding and blocking phenomena of the slider structure and the inclined plate structure are avoided, the slider structure 51 is driven to be in sliding butt joint with the inclined plate structure 41 when the reset indicating button 5 is pressed down, the inclined plate structure 41 is used for driving the transmission bracket 4 to reversely rotate through the guide matching of the inclined plate structure 41 and the slider structure 51, the reset action of the transmission bracket 4 is realized, and the reset action of the trip shaft 6 is not limited any more by the transmission bracket 4, the circuit breaker can be operated to carry out free opening and closing operation. The forward rotation and the reverse rotation in this context mean that the two rotation directions of a certain component are different, and do not represent the actual rotation direction, for example, the forward rotation of the transmission bracket 4 is the rotation near the electric leakage release 3 side, and the reverse rotation of the transmission bracket 4 is the rotation far from the electric leakage release 3 side.

The leakage casing 2 is provided with an arc-shaped hole for the trip shaft 6 to slide, the transmission support 4 comprises a shift lever part 42 extending from the inclined plate structure 41 to the arc-shaped hole, a certain included angle is formed between the shift lever part 42 and the inclined plate structure 41, an operating mechanism in the circuit breaker body 1 is provided with a lock catch and a jump catch which form locking matching (the operating mechanism part is the prior art and is not explained in detail here), one end of the trip shaft 6 is fixedly connected to the lock catch of the operating mechanism, the other end of the trip shaft penetrates through the leakage casing 2, when a leakage fault occurs, the leakage trip mechanism drives the transmission support 4 to rotate in the forward direction, the transmission support 4 drives the trip shaft 6 to act through the shift lever part 42 in the rotating process, the trip shaft 6 slides along the arc-shaped hole under the driving of the shift lever part 42 and triggers the operating mechanism to trip act, namely, the lock catch is separated from the tripping release of the tripping buckle, so that the operating mechanism is triggered to execute tripping and brake separating of the circuit breaker, and the leakage protection function is realized.

As a specific configuration, the transmission bracket 4 includes a rotation shaft portion 43 rotatably connected to the earth leakage housing 2, and a bracket panel 40 connected to the rotation shaft portion 43, and a through-hole structure 44 provided on the bracket panel 40 to be connected to the driving lever 31, the sloping plate structure 41 is connected to the side of the bracket panel 40, the end of the driving rod 31 is provided with a limit latch 32 which is matched and abutted against the side of the bracket panel 40 opposite to the electric leakage release 3, the through hole structure 44 comprises an upper through hole with a smaller caliber and a lower through hole with a larger caliber, when in installation, the driving rod drives the limiting fixture block 32 to pass through the lower through hole and then enter the upper through hole, therefore, when the leakage release 3 is triggered due to a leakage fault, the driving rod 31 pushes the transmission bracket 4 to rotate in the forward direction through the limiting clamping block 32.

As shown in fig. 3, a limiting structure 7 for forming a limiting fit is arranged between the reset indicating button 5 and the transmission bracket 4, the limiting structure 7 includes a limiting hole 72 arranged on the transmission bracket 4, and a limiting hook 71 correspondingly arranged at the bottom of the slider structure 51, the limiting hook 71 is inserted into the limiting hole 72 during the process that the reset indicating button 5 drives the transmission bracket 4 to rotate reversely, and is withdrawn from the limiting hole 72 during the process that the transmission bracket 4 rotates forward, wherein the limiting hook 71 is in an L-shaped structure and has an arc end facing the limiting hole 72, the arc end is designed to facilitate the smooth insertion of the limiting hook 71 into the limiting hole 72, and the structure is arranged to keep the transmission bracket 4 and the reset indicating button 5 locked in a relative position when the limiting hook 71 is inserted into the limiting hole 72 to form a limiting fit, the reset indicating button 5 in a pressed state is limited, so that the reset indicating button 5 is limited from being upwards ejected out of the top of the leakage shell 2; in addition, when transmission bracket 4 forward rotation under the drive of electric leakage tripping structure, make spacing hook 71 withdraw from outside spacing hole 72 and remove spacing cooperation, reset instruction button 5 at this moment auto-eject under its elastic force the leak casing bottom for instruct electric leakage circuit breaker to take place the electric leakage fault tripping operation.

The earth leakage protection device of this embodiment further comprises a test button mechanism 8 and a control circuit board 9 provided to the earth leakage housing 2, as shown in fig. 2, the test button mechanism 8 includes a test button 81 elastically disposed on the top of the earth leakage housing 2, and two trigger electric pieces 82 oppositely arranged in the card slot inside the leakage shell 2, the two trigger electric pieces 82 are respectively connected with the electric connector at one end of the leakage shell 2 through lines, when the test button 81 is pressed, the two trigger electric strips are driven to be contacted and an action current signal is generated, the electric leakage shell consists of a bottom shell and a shell cover, the test button mechanism 22 and the electric leakage tripping mechanism 8 are adjacently arranged in the bottom shell at intervals, the control circuit board is arranged below the electric leakage tripping mechanism, and the test button 81 and the reset indication button 5 are oppositely arranged at two ends of the electric leakage tripping device 3. According to the structure, the design is that the leakage signal is simulated through the test button mechanism 8, so that the purpose of triggering the leakage tripping mechanism to act is achieved, and the function of detecting whether the leakage function of the leakage circuit breaker is normal is achieved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A leakage protection device of a leakage circuit breaker comprises a leakage shell (2) arranged on one side of a circuit breaker body (1), a tripping shaft (6) movably arranged in the leakage shell (2) in a penetrating way and linked with an operating mechanism in the circuit breaker body (1), and a leakage tripping mechanism arranged in the leakage shell (2) and used for driving the tripping shaft (6) to act so as to trigger the circuit breaker body (1) to trip and separate a brake; characterized in that, electric leakage tripping device includes:

a leakage release (3) having a drive rod (31) that reciprocates linearly when triggered;

the transmission support (4) is rotatably arranged between the electric leakage tripper (3) and the tripping shaft (6), and the tripping shaft (6) is positioned on a rotating path of the transmission support (4); the driving rod (31) is connected to the transmission bracket (4) in a penetrating manner, and drives the transmission bracket (4) to rotate in the positive direction when moving to one side of the electric leakage release (3), so that the transmission bracket (4) drives the tripping shaft (6) to act;

the reset indicating button (5) is elastically and movably arranged at the top of the electric leakage shell (2) and drives the transmission bracket (4) to rotate reversely when being pressed; the reset indicating button (5) is provided with a locking position which forms limit fit with the transmission bracket (4) when rotating reversely and a separation position which releases the limit fit with the transmission bracket (4) when rotating forwardly; the reset indication button (5) is limited and contained in the electric leakage shell when in a locking position, and is popped out of the top of the electric leakage shell when in a separating position.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: the transmission support (4) is including setting up swash plate structure (41) on its one side, swash plate structure (41) orientation trip shaft (6) lopsidedness sets up, reset to indicate to be equipped with on button (5) with relative slider structure (51) about swash plate structure (41), slider structure (51) cooperation slip butt is in when resetting to indicate button (5) to push down on swash plate structure (41), with the drive transmission support (4) antiport.

3. A residual current device for a residual current circuit breaker as claimed in claim 2, characterized in that: one end of the sliding block structure (51) is provided with a wedge-shaped surface (52) matched with the inclined plate structure (41).

4. A residual current device for a residual current circuit breaker according to claim 3, characterized in that: be provided with on electric leakage casing (2) and supply the gliding arc hole of trip shaft (6), transmission support (4) include by swash plate structure (41) extend to the portion of dialling (42) of arc hole department, form certain contained angle setting between portion of dialling (42) and swash plate structure (41), trip shaft (6) are in follow under the drive of portion of dialling (42) the arc hole slides and triggers operating device tripping action.

5. A residual current device for a residual current circuit breaker according to claim 4, characterized in that: reset instruction button (5) with be equipped with between transmission support (4) and be used for forming spacing complex limit structure (7), limit structure (7) are including setting up spacing hole (72) on transmission support (4) and correspond the setting and be in spacing hook (71) of slider structure (51) bottom, spacing hook (71) are in reset instruction button drive transmission support (4) antiport in-process inserts spacing hole (72), and transmission support (4) forward rotation in-process withdraws from spacing hole (72).

6. A residual current device for a residual current circuit breaker according to claim 5, characterized in that: the limiting hook (71) is of an L-shaped structure and is provided with an arc end facing the limiting hole (72).

7. A residual current circuit breaker's leakage protection device according to any of claims 2-6, characterized in that: reset instruction button (5) including the button body, and set up constant head tank (53) in button body one side, and hold reset spring (54) in constant head tank (53), slider structure (51) body coupling is in the bottom side of button body, electric leakage casing (2) top is provided with suitable slidable mounting button guide hole (21) of button body, be equipped with the cooperation on the lateral wall of button guide hole (21) and stretch into to location boss (22) in constant head tank (53), reset spring (54) both ends are spacing to be set up location boss (22) with between constant head tank (53).

8. A residual current device for a residual current circuit breaker according to claim 7, characterized in that: transmission support (4) including rotate connect in the pivot portion (43) of electric leakage casing (2), and with support panel (40) that pivot portion (43) link to each other, and set up on support panel (40) with through-hole structure (44) that actuating lever (31) link to each other, swash plate structure (41) are connected on the side of support panel (40), actuating lever (31) tip is provided with the cooperation and supports support panel (40) dorsad spacing fixture block (32) on the side of electric leakage release (3).

9. A residual current device for a residual current circuit breaker according to claim 1, characterized in that: still including set up in test button mechanism (8) and control circuit board (9) of electric leakage casing (2), test button mechanism (8) are including elasticity setting in test button (81) at electric leakage casing (2) top and relative setting are in two trigger electric pieces (82) in the inside draw-in groove of electric leakage casing (2), and two trigger electric pieces (82) are connected respectively through the circuit on the electric connector of electric leakage casing (2) one end, electric connector fixes on control circuit board (9), drive when test button (81) are pressed electric connector (82) contact and produce the action current signal.

10. A residual current device for a residual current circuit breaker according to claim 9, characterized in that: the test button (81) and the reset indication button (5) are oppositely positioned at two ends of the leakage tripper (3).

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