CN113658834A - Novel operating system of electric leakage circuit breaker and electric leakage circuit breaker - Google Patents

Abstract

The invention relates to a novel operating system of a leakage circuit breaker and the leakage circuit breaker, which comprise a handle, a first connecting rod, a second connecting rod, a bracket, a third connecting rod, a lock catch driving spring, a jump buckle reset spring, a leakage release and an elastic reset disconnecting mechanism, wherein the handle is connected with the first connecting rod through the second connecting rod; the bracket is rotatably arranged on the shell seat, the movable contact rod is arranged on the bracket rotating shaft, the tail end of the lock catch is rotatably arranged on the shell seat, and the lock catch drives the spring to rotate the lock catch; the jump buckle is rotatably arranged on the shell seat, and the jump buckle reset spring enables the jump buckle to lock the lock catch; one end of the first connecting rod is hinged with the handle, the other end of the first connecting rod is hinged with one end of the second connecting rod, and the other end of the second connecting rod is hinged with the bracket; one end of the third connecting rod is hinged to the hinged point of the first connecting rod and the second connecting rod, and the other end of the third connecting rod is hinged to the lock catch; the device has a middle dead point position in the closing process, and in the closing state, the included angle theta between the first connecting rod and the third connecting rod is more than or equal to 90 degrees.

Description

Novel operating system of electric leakage circuit breaker and electric leakage circuit breaker

Technical Field

The invention relates to the field of electronic elements, in particular to a novel operating system of an electric leakage circuit breaker and the electric leakage circuit breaker.

Background

The leakage circuit breaker is a switch which can automatically act when the leakage current in the circuit exceeds a preset value, and provides overload and short-circuit protection functions. The operating system in the electric leakage circuit breaker is used for driving the movable contact and the fixed contact to be contacted and separated, and can automatically act when the electric leakage current exceeds a preset value, so that the movable contact and the fixed contact are separated to cut off a circuit. In current earth leakage circuit breaker, operating system has adopted various structural design, but there are many parts in many, the problem of structure complicacy, leads to its kinematic chain more complicated, is unfavorable for earth leakage circuit breaker's work. And with the increase of material cost and labor force of operating system parts, the complex structure causes high cost, and the originally tiny profit margin is further reduced.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a novel operating system of an electrical leakage breaker and an electrical leakage breaker, which have the advantages of simple structure, convenient use, simple movement among parts, stable and reliable operation, and reduced cost.

In order to achieve the above object, the present invention provides a novel operating system of an earth leakage circuit breaker, which is used for being installed on a housing seat of the earth leakage circuit breaker to drive a movable contact rod to move to perform disconnection and closing of the earth leakage circuit breaker, and comprises a handle, a first connecting rod, a second connecting rod, a bracket, a third connecting rod, a latch driving spring, a trip buckle return spring, an earth leakage release and an elastic return disconnection mechanism; the handle is rotatably arranged on the shell seat, the rotating center of the handle is marked as a rotating point a, the support is rotatably arranged on the shell seat, the movable contact rod is arranged on the support, the tail end of the lock catch is rotatably arranged on the shell seat, the front end of the lock catch is used for being matched with the jump buckle, and the lock catch driving spring acts on the lock catch and is used for enabling the lock catch to rotate; the jump buckle is rotatably arranged on the shell seat, the jump buckle reset spring acts on the jump buckle to enable the jump buckle to be located at the locking position, and the jump buckle is matched with the front end of the lock catch when located at the locking position to lock the lock catch; when the leakage release acts, the jump buckle is pushed to move to be unlocked with the lock catch; one end of the first connecting rod is hinged with the handle through a hinge point b, the other end of the first connecting rod is hinged with one end of the second connecting rod through a hinge point b, and the other end of the second connecting rod is hinged with the bracket; one end of the third connecting rod is hinged to a hinge point b of the first connecting rod and the second connecting rod, and the other end of the third connecting rod is hinged to the lock catch through a hinge point f; the elastic reset disconnecting mechanism is used for driving the handle and the bracket to rotate and reset to a disconnecting position; in the closing process, the rotating point a, the hinge point b and the hinge point c are collinear, and in the closing state, an included angle theta between a connecting line of the hinge point b and the hinge point c and a connecting line of the hinge point c and the hinge point f is not less than 90 degrees.

Further, the elastic reset disconnection mechanism comprises a bracket reset spring arranged between the shell seat and the bracket and a handle reset spring arranged between the shell seat and the handle.

Furthermore, the elastic reset disconnection mechanism further comprises a tension spring, wherein one end of the tension spring is hinged to the handle rotation shaft, and the other end of the tension spring is hinged to the support.

Furthermore, a rotating shaft is arranged in the support, the rotating shaft is rotatably arranged in the shell seat, the support return spring is a belleville spring, the belleville spring is sleeved at the end part of the rotating shaft, and two ends of the belleville spring are respectively connected to the shell seat and the support.

Further, still include the board that resets of rotatable installation on the casing seat, the board that resets has the baffle portion, electric leakage release has telescopic motion's push rod, the baffle position is in the push rod and jumps and detains between.

Further, still including rotatable indicator and the middle coupling assembling of installing in the casing seat, still be equipped with observation window on the casing seat, be equipped with disconnection sign and combined floodgate sign on the indicator, drive the indicator through middle coupling assembling and rotate when the handle rotates.

Further, middle coupling assembling includes fourth connecting rod and swinging arms, fourth connecting rod one end is articulated with the second connecting rod, the other end is articulated with swinging arms one end, the swinging arms other end articulates on the casing seat, be equipped with tie rod portion on the swinging arms, sliding fit and normal running fit between tie rod portion and the indicator, the swinging arms drives the indicator through tie rod portion and rotates when rotating.

Further, the connecting groove is arranged on the indicating piece, the end part of the connecting rod part is circular and extends into the connecting groove, and the end part of the connecting rod part can move relatively and slide relatively in the connecting groove.

Furthermore, a stopping stop block is fixed on the fourth connecting rod, a stopping torsion spring is fixedly connected to the handle, one end of the stopping torsion spring extends to form a stopping barrier strip, and the stopping barrier strip abuts against the stopping stop block in the process that the handle turns to the off state from the closing state.

The invention also provides a residual current circuit breaker, which comprises a shell seat, a movable contact rod with a movable contact, a static contact rod with a static contact, and the novel operating system, wherein the static contact rod is fixed on the shell seat.

As described above, the novel operating system and the earth leakage breaker according to the present invention have the following advantageous effects:

by arranging the handle, the first connecting rod, the second connecting rod, the bracket, the third connecting rod, the lock catch driving spring, the jump catch reset spring, the leakage tripper and the elastic reset disconnecting mechanism, the movable contact rod is driven by the first connecting rod, the second connecting rod and the bracket to move when the handle rotates, so as to carry out switching-on and end opening, and the lock catch, the jump catch and the third connecting rod are used for restraining the movable contact rod to form a stable clamping state, so that the circuit breaker can realize a stable switching-on state; when the circuit breaks down automatic disconnection, the electric leakage release takes place the action, order about to jump to detain and remove the locking cooperation with the hasp front end, the hasp rotates and drives the motion of third connecting rod, the third connecting rod is in the active state, remove the restraint to first connecting rod, make the handle, first connecting rod, second connecting rod and support no longer are in the chucking state, realize the automatic re-setting disconnection under the elastic force of elasticity disconnection mechanism that resets, jump to detain simultaneously and also can get back to the locking position under the effect of jump knot reset spring, and lock the hasp once more, whole novel operating system gets back to the off-state. Whole novel operating system simple structure, it is convenient to use, and the motion is simple between each part, and job stabilization is reliable, can effective reduce cost.

Drawings

Fig. 1 is a schematic structural diagram of a novel operating system according to the present invention.

Fig. 2 is a schematic diagram of the leakage release, the reset plate and the jumper of the present invention.

Fig. 3 is a front view of fig. 1.

FIG. 4 is a diagram of the novel operating system of the present invention in the disconnected state.

Fig. 5 is a simplified diagram of the movement of the handle, first link, second link, third link and bracket in the open position of the present invention.

FIG. 6 is a simplified view of the handle, first link, second link, third link and bracket movement at a mid-dead-center position in accordance with the present invention.

FIG. 7 is a simplified diagram of the movement of the handle, first link, second link, third link and bracket in the closed position of the present invention.

Fig. 8 is an operation view of the stopping spring and the middle stopper in the present invention.

Fig. 9 is a schematic structural diagram of the residual current circuit breaker of the present invention.

Description of the element reference numerals

1 casing seat

2 moving contact rod

3 static contact rod

4 handle

5 first connecting rod

6 second connecting rod

7 support

701 rotating shaft

8 third connecting rod

9 Lock catch

10 jump buckle

11 jump buckle return spring

12 reset plate

1201 baffle unit

13 reset plate auxiliary spring

14 leakage release

1401 push rod

15 indicator

1501 connecting groove

1502 disconnection indication

1503 switching-on mark

16 oscillating lever

1601 connecting rod part

17 fourth connecting rod

18-indication return auxiliary spring

19 turning block

20 stop torsion spring

21 stop dog

22 tension spring

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.

Referring to fig. 1 to 9, the present invention provides a novel operating system of an electrical leakage breaker, which is used for being installed on a housing base 1 of the electrical leakage breaker to drive a movable contact rod 2 to move, so as to make a movable contact and a fixed contact or separate, thereby performing opening and closing of the electrical leakage breaker, wherein the housing base 1 is a main component of the electrical leakage breaker and serves as an installation base and a protection function for other parts.

The novel operating system comprises a handle 4, a first connecting rod 5, a second connecting rod 6, a bracket 7, a third connecting rod 8, a lock catch 9, a lock catch driving spring (not shown in the attached drawing), a jump buckle 10, a jump buckle return spring 11, a leakage release 14 and an elastic return disconnecting mechanism; the handle 4 is rotatably arranged on the shell seat 1, the bracket 7 is rotatably arranged on the shell seat 1, the rotating center of the bracket is marked as a rotating point a, the movable contact rod 2 is arranged on the bracket 7, the tail end of the lock catch 9 is rotatably arranged on the shell seat 1, the front end of the lock catch 9 is used for being matched with the jump buckle 10, and the lock catch driving spring acts on the lock catch 9 and is used for enabling the lock catch 9 to rotate; the jump buckle 10 is rotatably arranged on the shell seat 1, the jump buckle reset spring 11 acts on the jump buckle 10 to enable the jump buckle 10 to be located at a locking position, and the jump buckle 10 is matched with the front end of the lock catch 9 to lock the lock catch 9 when located at the locking position; when the leakage release 14 acts, the jump buckle 10 is pushed to move to be unlocked with the lock buckle 9; one end of the first connecting rod 5 is hinged with the handle 4 through a hinge point b, the other end of the first connecting rod 5 is hinged with one end of the second connecting rod 6 through a hinge point b, and the other end of the second connecting rod 6 is hinged with the bracket 7; one end of a third connecting rod 8 is hinged to a hinge point b of the first connecting rod 5 and the second connecting rod 6, and the other end of the third connecting rod 8 is hinged to a lock catch 9 through a hinge point f; the elastic reset disconnection mechanism is used for driving the handle 4 and the bracket 7 to rotate and reset to a disconnection position; in the closing process, the rotating point a, the hinge point b and the hinge point c are collinear, and in the closing state, an included angle theta between a connecting line of the hinge point b and the hinge point c and a connecting line of the hinge point c and the hinge point f is not less than 90 degrees.

In the present invention, since the handle 4, the first link 5, the second link 6 and the bracket 7 are linkage members, the elastic force provided by the elastic reset disconnecting mechanism can act on only one of the handle 4 and the bracket 7 or act on both of the handle 4 and the bracket 7, so as to drive the handle 4 and the bracket 7 to rotate to the disconnecting position.

The working principle of the novel operating system comprises the following aspects:

(1) in the off state, referring to fig. 4, under the action of the elastic force of the elastic reset disconnecting mechanism, the handle 4 is located at the right disconnecting position, the bracket 7 is located at the disconnecting position, the jump buckle reset spring 11 applies an elastic force to the jump buckle 10 to keep the jump buckle 10 at the locking position, at this time, the jump buckle 10 is matched with the front end of the buckle 9 to lock the buckle 9, the buckle 9 cannot rotate, the buckle driving spring is in the elastic energy storage state, the rotation axis of the handle 4 is denoted as a rotation point a, the hinge point of the handle 4 and the first connecting rod 5 is a hinge point b, the hinge point of the first connecting rod 5 and the second connecting rod 6 is a hinge point c, the hinge point of the second connecting rod 6 and the bracket 7 is a hinge point d, the rotation axis of the bracket 7 is denoted as a rotation point e, the hinge point of the third connecting rod 8 and the buckle 9 is a hinge point f, the hinge point of the rear end of the buckle 9 and the housing base 1 is denoted as a hinge point g, and the front end of the buckle 9 is denoted as a point h, at this time, the kinematic connection relationship among the handle 4, the first connecting rod 5, the second connecting rod 6, the bracket 7, the third connecting rod 8 and the latch 9 can be simplified as shown in fig. 5, wherein the motion of the handle 4 is simplified as the swing rod ab, the motion of the first connecting rod 5 is simplified as the rod bc, the motion of the second connecting rod 6 is simplified as the rod cd, the motion of the bracket 7 is simplified as the swing rod de, the motion of the third connecting rod 8 is simplified as the swing rod cf (because the latch 9 is locked at the fixed time point f), and the motion of the latch 9 is simplified as the swing rod hg.

(2) In the closing process, referring to fig. 4, 5 and 6, the handle 4 rotates to the closing position, that is, the swing rod ab rotates to the right to drive the first connecting rod 5 to move downwards, the first connecting rod 5 drives the second connecting rod 6 to move downwards and simultaneously drives the third connecting rod 8 to rotate downwards around the hinge point f (because the latch 9 is locked by the trip 10 and is not moved at this time), the second connecting rod 6 drives the bracket 7 to rotate downwards, the bracket 7 drives the contact rod 2 to rotate until the moving contact and the static contact are contacted, before the handle 4 reaches the closing position, the rotation point a, the hinge point b and the hinge point c reach a collinear state, referring to fig. 5, the point c reaches the lowest position, that is, the bracket 7 rotates to the lowest position, and then when the handle continues to reach the closing position, the swing rod ab and the rod bc are not collinear, cross over the dead point position, and the swing rod de swings upwards by a small distance, and the contact of the movable contact and the fixed contact is still kept in contact (the contact between the movable contact and the fixed contact has a certain elastic space, specifically, the movable contact rod 2 and the fixed contact rod 3 have certain deformation capacity), the included angle theta between the connecting line of the hinge points b and c and the connecting line of the hinge points c and f is not less than 90 degrees, see fig. 6, namely the included angle theta between the rod bc and the rod fc is not less than 90 degrees, in the closing state, under the constraint of the oscillating rod fc and the rod cd on the rod bc, the oscillating rod ab cannot rotate leftwards to drive the rod bc, namely, at the moment, the elastic reset disconnecting mechanism cannot drive the handle 4 and the bracket 7 to reset and rotate towards the disconnecting position, and the whole operating system is in a stable clamping state, so that the circuit breaker keeps a stable closing state.

(3) When the leakage occurs in the connected circuit, referring to fig. 1, 4 and 7, when the leakage occurs in the connected circuit, the leakage release 14 acts to drive the jump buckle 10 to rotate, the locking fit with the front end of the buckle 9 is removed, at this time, the buckle 9 rotates under the elastic force of the buckle driving spring, so as to drive the third connecting rod 8 to move upwards, the third connecting rod 8 pulls the hinge point c of the first connecting rod 5 and the second connecting rod 6, referring to fig. 7, that is, the point f rotates upwards, and is not fixed any more, so that the constraint on the rod bc is removed, the rod bc can move downwards smoothly, and the swing rod ab can rotate leftwards and reset smoothly, so that the handle 4 and the bracket 7 can move towards the disconnection position smoothly under the elastic acting force of the elastic resetting disconnection mechanism, so that the movable and static contacts are separated, and the automatic disconnection is realized; meanwhile, after the leakage release 14 is reset, the jump buckle 10 returns to the locking position under the action of the jump buckle reset spring 11, the lock 9 is locked again, and the whole novel operating system returns to the disconnected state, which is shown in fig. 4.

The novel operating system adopts the handle 4, the first connecting rod 5, the second connecting rod 6 and the bracket 7 to drive the movable contact rod 2 to move, and the movable contact rod is restrained by the lock catch 9, the jump buckle 10 and the third connecting rod 8 to form a stable clamping state, so that the circuit breaker realizes a stable closing state, and when electric leakage occurs, the restraint is automatically removed, and automatic reset disconnection is realized. Whole novel operating system simple structure, it is convenient to use, and the motion is simple between each part, and job stabilization is reliable, can effective reduce cost.

Referring to fig. 1 to 8, the present invention is further illustrated in a specific embodiment as follows:

in the present embodiment, referring to fig. 1 and 3, as a preferred design, the elastic reset disconnecting mechanism includes a bracket return spring (not shown in the drawings) disposed between the housing seat 1 and the bracket 7 and a handle return spring (not shown in the drawings) disposed between the housing seat 1 and the handle 4, the bracket return spring is used to assist the bracket 7 to return to the disconnected position, and preferably, the bracket return spring is a belleville spring (not shown in the drawings), referring to fig. 3, the bracket 7 has a rotating shaft 701 therein, the rotating shaft is rotatably installed in the housing seat 1, so as to realize rotatable installation of the bracket 7 as a whole, and the movable contact rod 2 can be fixedly connected to the rotating shaft 701, the belleville spring is sleeved on the end of the rotating shaft 701, and both ends of the belleville spring are respectively connected to the housing seat 1 and the bracket 7, specifically, can be connected in the rotating shaft 701 or other parts of the bracket 7, in the manner of the belleville spring, the rotating shaft is only required to be arranged at the end part of the rotating shaft 701 and is positioned between the bracket 7 and the shell seat 1, and compared with other spring forms, the rotating shaft occupies small space and is more convenient to install. The handle return spring can adopt a torsion spring, and two ends of the handle return spring are respectively connected with the shell seat 1 and the handle 4.

In addition, in the present embodiment, further, referring to fig. 3, the elastic reset breaking mechanism further includes a tension spring 22, one end of the tension spring 22 is hinged on the rotating shaft of the handle 4, and the other end is hinged on a proper position of the bracket 7, and in the closing state, the tension spring 22 is stretched, and the elastic tension thereof is used for pulling the bracket 7 to rotate and reset.

In the present invention, the electrical leakage release 14 can directly or indirectly push the trip buckle 10. As a preferable design, in this embodiment, referring to fig. 1 and fig. 2, the novel operating system further includes a reset plate 12 rotatably mounted on the housing base 1, the reset plate 12 has a baffle portion 1201, the electrical leakage release 14 has a push rod 1401 for telescopic movement, the baffle portion 1201 is located between the push rod 1401 and the jump buckle 10, when the electrical leakage release 14 senses an electrical leakage, the push rod 1401 extends to push the baffle portion 1201 to rotate the reset plate 12, and then the push buckle 9 is pushed to rotate by the baffle portion 1201. In addition, a corresponding spring is arranged to act on the reset plate 12, so that the reset plate 12 can be automatically reset to the original position after the leakage release 14 is reset, the push on the jump buckle 10 is released, and the jump buckle 10 can be reset smoothly. The leakage release 14 is a common structure in a circuit breaker, and can act when a circuit has leakage or a person gets an electric shock.

In this embodiment, referring to fig. 1, fig. 3 and fig. 4, as a preferred design, the novel operating system further includes an indicator 15 rotatably mounted on the housing base 1, and an intermediate connection assembly, the housing base 1 is further provided with an observation window, the indicator 15 is provided with a disconnection mark 1502 and a closing mark 1503, the indicator 15 is driven to rotate by the intermediate connection assembly when the handle 4 is in a closing motion, wherein the intermediate connection assembly can be directly disposed between the handle 4 and the indicator 15, or disposed between the indicator 15 and a moving member in linkage with the first link 5, the second link 6, etc. and the handle 4. Preferably, an indicator return assist spring 18 is further included to assist in returning the indicator 15 to the off position. When the switch-on state is detected, the switch-off mark 1502 is located at the observation window, and in the switch-on process, the handle 4 rotates to drive the indicating member 15 to rotate through the middle connecting component, and indicate that the auxiliary return spring 18 is in the elastic energy storage state, and when the switch-on state is detected, the switch-on mark 1503 is just located at the observation window. When the leakage is automatically disconnected, the handle 4 rotates to drive the indicator 15 to rotate and reset to the disconnection position through the middle connecting component, and meanwhile, the elastic force of the auxiliary indicating and resetting spring 18 can assist the indicator 15 to reset. Through setting up indicator 15, conveniently observe the state that the circuit breaker was located.

In this embodiment, referring to fig. 1, fig. 3 and fig. 4, further, the intermediate connection assembly includes a fourth link 17 and a swing lever 16, one end of the fourth link 17 is hinged to the second link 6, the other end is hinged to one end of the swing lever 16, the other end of the swing lever 16 is hinged to the housing seat 1, specifically, the fourth link 17 may be hinged to a hinge shaft of the second link 6 and the first link 5, and may of course be hinged to other positions, the swing lever 16 is provided with a link portion 1601, the link portion 1601 is in sliding fit and rotation fit with the indicator 15, and the swing lever 16 drives the indicator 15 to rotate through the link portion 1601. Specifically, the U-shaped connecting groove 1501 is provided on the indicator 15, the end of the connecting rod 1601 is circular and extends into the connecting groove 1501, and the end of the connecting rod 1601 can move relatively and slide relatively in the connecting groove 1501, so as to realize sliding fit and rotating fit of the connecting rod 1601 and the indicator, and thus the swing rod 16 can smoothly drive the indicator 15 to rotate through the connecting rod 1601 when rotating, and of course, the manner of sliding fit and rotating fit between the end of the connecting rod 1601 and the indicator 15 is not limited to the specific form, and other structural forms can be adopted, and the same function can be realized. During the switching-on process, referring to fig. 4, the second link 6 drives the fourth link 17 to move downward, and then drives the swing rod 16 to swing downward, and through the cooperation of the connecting rod portion 1601 and the connecting groove 1501, the indicator 15 is driven to rotate downward to the switching-on position. When the leakage is automatically cut off, the second link 6 drives the fourth link 17 to move upwards, the swing rod 16 rotates upwards, the connecting rod portion 1601 drives the indicator 15 to rotate upwards, and the indicator is reset to the cut-off position. Of course, the intermediate connecting assembly is not limited to the above form, and in other embodiments, other suitable structures may be adopted, and the same rotation of the indicator 15 may be achieved.

The installation of the indication reset auxiliary spring 18 can have various forms, in this embodiment, referring to fig. 1, fig. 3 and fig. 4, as an optimal design, a shaft pin is arranged on the indication member 15, a rotating block 19 is installed on the shaft pin, the indication reset auxiliary spring 18 is a torsion spring and is sleeved on the shaft pin, one end of the indication reset auxiliary spring 18 abuts against the indication member 15, the other end of the indication reset auxiliary spring is used for abutting against the rotating block 19, a limit column is arranged on the rotating block 19, and a limit sliding surface is arranged on the inner side of the jump buckle 10. In the process that the indicating piece 15 rotates to the off position, referring to fig. 3, the indicating piece 15 drives the rotating block 19 to move downwards together, the limiting column on the rotating block 19 is in contact with the limiting sliding surface on the trip buckle 10, and when the indicating piece 15 continues to rotate to the on position, the indicating piece 15 is limited not to rotate any more through the abutting action of the rotating block 19 and the trip buckle 10, so that the indicating piece 15 and the rotating block 19 can rotate relatively, the indicating and resetting auxiliary spring 18 is twisted by the indicating piece 15 and the rotating block 19, and is in an elastic energy storage state, so that the indicating piece 15 can be reset.

In this embodiment, referring to fig. 4 and 8, as a preferred design, a stopping stop 21 is fixed on the fourth link 17, and a stopping torsion spring 20 is fixed on the handle 4, specifically, the stopping torsion spring 20 can be sleeved on a rotating shaft of the handle 4 and is fixedly connected with the stopping torsion spring 20, one end of the stopping torsion spring 20 extends to form a stopping stop strip, and the stopping stop strip abuts against the stopping stop 21 during the process of turning the handle 4 from the closing state to the opening state. Specifically, referring to fig. 7, fig. 7 shows the matching relationship between the stopping torsion spring 20 and the middle stop block 21 in the process from the closing state to the opening state, when the closing state is reached, the stopping barrier of the stopping torsion spring 20 is located at the right side of the stopping stop block 21, when the electric leakage is automatically opened, the handle 4 is rotated to the right and drives the stopping spring to rotate, when the handle 4 reaches a certain position between the closing position and the opening position, the stopping barrier abuts against the stopping stop block 21, the stopping spring is twisted to generate an elastic torsion, when the elastic torsion of the stopping spring is balanced with the elastic force of the elastic resetting opening mechanism, the handle 4 can be limited not to rotate to the right, but at the moment, the moving contact and the stationary contact are separated, the position of the handle 4 at this moment is called as the stopping position, then the handle 4 is continuously rotated to the right by manual force, the stopping spring is further twisted and deformed, so that the stopping barrier is gradually twisted to reach the upper end of the stopping stop block 21, and is exaggerated from the upper end of the stopper 21, the stop bar being located to the left of the stop stopper 21 when the handle 4 is in the off position. In closing, the stop bar is switched from the left to the right of the intermediate stop 21 when the handle 4 is rotated, based on the same principle. Stop dog 21 and stop torsional spring 20 through the setting for have the position of stopping in electric leakage automatic disconnection process, and do not directly jump the disconnection position, can play the warning effect, remind operating personnel circuit to have the electric leakage trouble, staff's discharge line trouble back, the manual off-state of dialling back again, then reclosing, thereby the safety guarantee when improving the use.

The invention also provides a residual current circuit breaker, which comprises a shell seat 1, a movable contact rod 2 with a movable contact, a static contact rod 3 with a static contact, wherein the static contact rod 3 is fixed on the shell seat 1, and the residual current circuit breaker also comprises the novel operating system, and the novel operating system is used for driving the movable contact rod 2 to act so as to realize switching-on and switching-off.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a novel operating system of residual current circuit breaker for install and drive movable contact rod (2) motion on residual current circuit breaker's casing seat (1) and carry out the disconnection of residual current circuit breaker and close a floodgate, its characterized in that: the novel operating system comprises a handle (4), a first connecting rod (5), a second connecting rod (6), a support (7), a third connecting rod (8), a lock catch (9), a lock catch driving spring, a jump buckle (10), a jump buckle reset spring (11), a leakage release (14) and an elastic reset disconnecting mechanism; the handle (4) is rotatably arranged on the shell seat (1), the rotating center of the handle is marked as a rotating point a, the support (7) is rotatably arranged on the shell seat (1), the movable contact rod (2) is arranged on the support (7), the tail end of the lock catch (9) is rotatably arranged on the shell seat (1), the front end of the lock catch (9) is used for being matched with the jump buckle (10), and the lock catch driving spring acts on the lock catch (9) and is used for enabling the lock catch (9) to rotate; the jump buckle (10) is rotatably arranged on the shell seat (1), the jump buckle reset spring (11) acts on the jump buckle (10) to enable the jump buckle (10) to be located at a locking position, and the jump buckle (10) is matched with the front end of the lock catch (9) to lock the lock catch (9) when located at the locking position; when the leakage release (14) acts, the jump buckle (10) is pushed to move to be unlocked with the lock catch (9); one end of the first connecting rod (5) is hinged with the handle (4) through a hinge point b, the other end of the first connecting rod (5) is hinged with one end of the second connecting rod (6) through a hinge point c, and the other end of the second connecting rod (6) is hinged with the bracket (7); one end of the third connecting rod (8) is hinged to a hinge point b of the first connecting rod (5) and the second connecting rod (6), and the other end of the third connecting rod (8) is hinged to the lock catch (9) through a hinge point f; the elastic reset disconnecting mechanism is used for driving the handle (4) and the bracket (7) to rotate and reset to a disconnecting position; in the closing process, the rotating point a, the hinge point b and the hinge point c are collinear, and in the closing state, the included angle theta between the connecting line of the hinge point b and the hinge point c and the connecting line of the hinge point c and the hinge point f is more than or equal to 90 degrees.

2. The novel operating system of claim 1, wherein: the elastic reset disconnecting mechanism comprises a support reset spring arranged between the shell seat (1) and the support (7) and a handle reset spring arranged between the shell seat (1) and the handle (4).

3. The novel operating system of claim 2, wherein: the elastic reset disconnecting mechanism further comprises a tension spring (22), one end of the tension spring (22) is hinged to the rotating shaft of the handle (4), and the other end of the tension spring (22) is hinged to the support (7).

4. The novel operating system of claim 2, wherein: the support (7) is internally provided with a rotating shaft (701), the rotating shaft (701) is rotatably installed in the shell seat (1), the support return spring is a belleville spring, the belleville spring is sleeved at the end part of the rotating shaft (701), and two ends of the belleville spring are respectively connected to the shell seat (1) and the support (7).

5. The novel operating system of claim 1, wherein: the electric leakage tripper further comprises a reset plate (12) rotatably mounted on the shell seat (1), wherein the reset plate (12) is provided with a baffle plate part (1201), the electric leakage tripper (14) is provided with a push rod (1401) which moves in a telescopic mode, and the baffle plate part (1201) is located between the push rod (1401) and the jump buckle (10).

6. The novel operating system of claim 1, wherein: still including rotatable indicator (15) and the middle coupling assembling of installing in casing seat (1), still be equipped with observation window on casing seat (1), be equipped with disconnection sign (1502) and combined floodgate sign (1503) on indicator (15), drive indicator (15) through middle coupling assembling and rotate when handle (4) rotate.

7. The novel operating system of claim 6, wherein: middle coupling assembling includes fourth connecting rod (17) and swinging arms (16), fourth connecting rod (17) one end is articulated with second connecting rod (6), the other end is articulated with swinging arms (16) one end, swinging arms (16) other end articulates on casing seat (1), be equipped with on swinging arms (16) and link rod portion (1601), sliding fit and normal running fit between link rod portion (1601) and indicator (15), driving indicator (15) through link rod portion (1601) and rotate when swinging arms (16) rotate.

8. The novel operating system of claim 7, wherein: the indicator (15) is provided with a connecting groove (1501), the end of the connecting rod part (1601) is circular and extends into the connecting groove (1501), and the end of the connecting rod part (1601) can move relatively and slide relatively in the connecting groove (1501).

9. The novel operating system of claim 7, wherein: a stopping stop block (21) is fixed on the fourth connecting rod (17), a stopping torsion spring (20) is fixedly connected to the handle (4), one end of the stopping torsion spring (20) extends to form a stopping stop strip, and the stopping stop strip abuts against the stopping stop block (21) when the handle (4) turns to a disconnected state from a closing state.

10. The utility model provides a residual current circuit breaker, includes casing seat (1), has movable contact rod (2) of moving contact and has static contact rod (3) of static contact, static contact rod (3) are fixed in casing seat (1), its characterized in that: further comprising a novel operating system as claimed in any one of claims 1 to 9.

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