CN112635264A

CN112635264A - Automatic circuit breaking protection device for large current fluctuation

Info

Publication number: CN112635264A
Application number: CN202110007348.3A
Authority: CN
Inventors: 王为绱
Original assignee: Nanjing Longyuxuan E Commerce Co ltd
Current assignee: Nanjing Longyuxuan E Commerce Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-04-09

Abstract

The invention discloses a circuit breaking protection device capable of automatically breaking when current fluctuation is large, which comprises a working box body, wherein a control cavity is arranged in the working box body, a positive wiring column is fixedly arranged on the left end surface of the working box body, and a negative wiring column is fixedly arranged on the right end surface of the working box body relative to the position corresponding to the positive wiring column.

Description

Automatic circuit breaking protection device for large current fluctuation

Technical Field

The invention relates to the field of circuit breakers, in particular to a circuit breaking protection device for automatically breaking when current fluctuation is large.

Background

The circuit 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 within a prescribed time.

In the working process of the circuit, due to the instability of load or voltage, the current often fluctuates to a certain degree, the unstable fluctuation of the current has certain damage to the circuit and the electric appliance, so that the circuit needs to be opened in time when the current fluctuates, however, the conventional circuit breaker has no containment to the occasional fluctuation of the circuit current, and therefore the circuit opening time is inaccurate. The present invention addresses the above-mentioned problems.

Disclosure of Invention

The technical problem is as follows:

when the current fluctuation is large, the circuit needs to be broken in time, and the conventional circuit breaker has no compatibility to the occasional fluctuation of the circuit current, so that the circuit breaking time is inaccurate.

In order to solve the problems, the embodiment designs a circuit breaking protection device which automatically breaks when the current fluctuation is large, the circuit breaking protection device which automatically breaks when the current fluctuation is large comprises a working box body, a control cavity is arranged in the working box body, a positive wiring column is fixedly arranged on the left end surface of the working box body, a negative wiring column is fixedly arranged on the right end surface of the working box body at the position corresponding to the positive wiring column, a switching device is arranged in the control cavity, the working box body comprises a first sleeve fixedly arranged on the inner wall of the left side of the control cavity, a first conductor fixedly connected with the left end surface of the positive wiring column and the right end surface of the positive wiring column is arranged in the first sleeve, a second sleeve is fixedly arranged on the inner wall of the right side of the control cavity, a second conductor fixedly connected with the left end surface of the negative wiring column and the right end surface of the right wiring column is arranged in the second sleeve, the induction device is arranged in the transmission cavity and comprises two first springs which are bilaterally symmetrical and fixedly arranged on the inner wall of the lower side of the transmission cavity, a driven box body is fixedly arranged on the upper end surface of each first spring, an induction cavity with an upward opening is arranged in the driven box body, a first guide rod is fixedly arranged between the inner walls of the left side and the right side of the induction cavity, a sliding plate is arranged on each first guide rod in a sliding mode, a fixed pin is fixedly arranged on the upper end surface of the sliding plate, two mutually exclusive electromagnets which can be mutually exclusive are fixedly arranged on the corresponding positions of the left end surface of the sliding plate and the inner wall of the left side of the induction cavity, a feedback device is arranged on the upper side of the induction device and comprises two first fixed plates which are bilaterally symmetrical and fixedly arranged on the inner walls of the left side and the right side of the control cavity, the upper end face of the first sliding block is fixedly provided with a contact rod, the control cavity is internally provided with a fixed rod, the fixed rod is fixedly arranged on the inner wall of the lower side of the control cavity, the fixed rod is internally provided with a first sliding hole with an upward opening, the first sliding hole is internally provided with a sliding rod in a vertical sliding mode, the lower end face of the sliding rod is fixedly provided with a third spring, and the upper end face of the sliding rod is fixedly provided with a rolling ball.

Wherein, the opening and closing device also comprises an opening and closing cavity which is arranged in the working box body and has a through inner wall at the upper side and the upper end surface of the working box body, a press switch is arranged in the opening and closing cavity in a vertical sliding manner, a fourth spring is fixedly arranged between the lower end surface of the press switch and the lower inner wall of the opening and closing cavity, a connecting rod is fixedly arranged on the lower end surface of the press switch, the lower end of the connecting rod extends into the control cavity and has a third sleeve fixedly arranged on the lower end surface, a third conductor is arranged in the third sleeve, the left end and the right end of the third sleeve can be respectively coincided with the first conductor and the second conductor, a limiting rod is fixedly arranged on the lower end surface of the third sleeve, a clamping block is fixedly arranged on the right end surface of the limiting rod, a fixed block is fixedly arranged on the inner wall at the rear side of the control cavity, a second hinged cavity which has a through, articulated between the side inner wall of the articulated chamber front and back of second is equipped with the dead pole of card, under the dead pole pin joint right side of card terminal surface with the fixed fifth spring that is equipped with between the articulated chamber downside inner wall of second, when pressing down press switch moves down, the third conductor with first conductor the coincidence of second conductor, the dead piece up end of card with under the dead pole left side of card terminal surface contradicts and is in the stop action of stopper is blocked down and is died.

The induction device further comprises a sixth spring fixedly arranged between the right end face of the sliding plate and the right inner wall of the induction cavity, two second fixing plates are symmetrically and fixedly arranged on the left and right side end faces of the driven box body, two third fixing plates located on the upper sides of the second fixing plates are symmetrically and fixedly arranged on the left and right inner walls of the transmission cavity, two attraction electromagnets capable of attracting each other are fixedly arranged on the corresponding positions of the lower end face of each third fixing plate and the upper end face of each second fixing plate, and the attraction electromagnets and the mutual exclusion electromagnets are beneficial to use.

Wherein, the feedback device also comprises a feedback rod fixedly arranged between the inner walls at the left side and the right side of the transmission cavity, two groups of second sliding holes with downward openings are symmetrically arranged at the left side and the right side of the lower end surface of the feedback rod, each group of second sliding holes comprises seventeen uniformly arrayed along the left-right direction, sliding pins are arranged in the second sliding holes in a vertical sliding manner, seventh springs are fixedly arranged between the upper end surface of each sliding pin and the inner wall at the upper side of the second sliding hole, two second sliding blocks are symmetrically arranged at the left side and the right side of the feedback rod in a horizontal sliding manner, the second sliding blocks can be abutted against the fixed pins, sliding cavities which are communicated with each other from left to right are arranged in the second sliding blocks, five third sliding holes with upward openings are uniformly arrayed along the left-right direction on the inner wall at the lower side of each sliding cavity, sliding tooth blocks which can be abutted and meshed with the sliding pins are arranged in the vertical sliding holes in a vertical sliding manner, eighth springs are fixedly, the second slider is internally provided with a third hinged cavity with an upward opening and a through left and right opening, the upper inner wall of the transmission cavity and the lower inner wall of the control cavity are bilaterally symmetrical and are provided with two stroke grooves in a through up-down mode, a swing rod is hinged between the front inner wall and the rear inner wall of the third hinged cavity, the other end of the swing rod is hinged with the front inner wall and the rear inner wall of the first hinged cavity at the corresponding side, the lower end surface of the feedback rod is bilaterally symmetrical and is provided with two cavities with a downward opening, a poke rod is hinged between the front inner wall and the rear inner wall of the cavities, the poke rod is fixedly provided with a ninth spring between the upper end surface of the poke rod and the upper inner wall of the cavities, the feedback rod is internally provided with a first threading hole, one end of the first threading hole is through with the lower end surface of the feedback rod, the other end of the feedback rod, the first pull rope penetrates into the feedback rod and is divided into two pull rod bodies which are respectively fixedly connected with the upper end faces of the two pull rod bodies, the inner wall of the upper side of the second sliding hole is provided with a second pull hole, the left side seventeen pull holes are beneficial to being formed by converging one in the feedback rod and communicated with the inner wall of the upper side of the cavity on the right side, the right side seventeen pull holes are formed by converging one in the feedback rod and communicated with the inner wall of the upper side of the cavity on the left side, the upper end face of the sliding pin is fixedly provided with a second pull rope which is beneficial to being formed by converging one in the second pull hole and fixedly connected with the upper end face of the right side pull rod body, the seventeen pull ropes on the right side are converged one in the second pull hole and fixedly connected with the upper end face of the left side pull rod body, and when the pull rod body is rotated towards the side direction of the ninth spring body, the second pull rope is pulled tightly, so that the sliding pin on the corresponding side moves upwards to be separated from the interference of the sliding tooth block.

Wherein, the circuit breaking device also comprises a feedback plate arranged at the upper side of the rolling ball, a spherical cavity with a downward opening is arranged in the feedback plate, the rolling ball rolls in the spherical cavity, the lower end surface of the feedback plate can be abutted against the upper end surface of the abutting rod, a return spring is fixedly arranged between the lower end surface of the left side of the feedback plate and the inner wall of the lower side of the control cavity, a reset rod is hinged on the blocking rod, a contact block which is contacted with the upper end surface of the feedback plate is fixedly arranged on the lower end surface of the reset rod, when the second guide rod on one side pushes against the lower end face of the feedback plate, the feedback plate moves upwards under the pushing side and moves downwards under the pushing side, when the left side and the right side of the feedback plate are both abutted by the abutting rods, the feedback plate moves upwards, the slide rod moves upwards in the first slide hole, and the third spring is stretched, and the reset rod moves upwards to drive the blocking rod to rotate anticlockwise to remove the conflict blocking of the blocking block.

The invention has the beneficial effects that: the circuit is disconnected in advance when the current suddenly increases through sudden change induction of the circuit current, if the fluctuation range of the current is not large, the device can remove the state of disconnection in advance of the circuit, if the fluctuation range of the current is large, the device can open the circuit immediately, the current fluctuation has certain tolerance while the circuit is protected, the accidental fluctuation of the current is prevented from being judged by mistake, and the time accuracy of circuit opening is effectively ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of portion "A" of FIG. 1;

FIG. 3 is an enlarged schematic view of portion "B" of FIG. 1;

FIG. 4 is an enlarged schematic view of the "C" portion of FIG. 1;

fig. 5 is an enlarged schematic view of a portion "D" in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a circuit breaking protection device for automatic circuit breaking when current fluctuation is large, which is mainly applied to the process of turning an inner hole convenient for chip discharge, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to a circuit breaking protection device for automatically breaking circuit when current fluctuation is large, which comprises a working box body 11, wherein a control cavity 25 is arranged in the working box body 11, a positive wiring column 22 is fixedly arranged on the left end surface of the working box body 11, a negative wiring column 36 is fixedly arranged on the right end surface of the working box body 11 corresponding to the positive wiring column 22, an opening and closing device 901 is arranged in the control cavity 25, the working box body 11 comprises a first sleeve 24 fixedly arranged on the inner wall of the left side of the control cavity 25, a first conductor 23 with the left end surface fixedly connected with the right end surface of the positive wiring column 22 is arranged in the first sleeve 24, a second sleeve 34 is fixedly arranged on the inner wall of the right side of the control cavity 25, a second conductor 35 with the right end surface fixedly connected with the left end surface of the negative wiring column 36 is arranged in the second sleeve 34, a transmission cavity 76 is arranged in the working box body 11, be equipped with induction system 902 in transmission chamber 76, induction system 902 includes bilateral symmetry and fixed setting two first springs 45 on the 76 downside inner walls of transmission chamber, the fixed driven box 46 that is equipped with on the 45 up end of first spring, be equipped with ascending response chamber 44 of opening in the driven box 46, it is fixed to be equipped with first guide arm 42 between the side inner wall about response chamber 44, it is equipped with slide 47 to slide from side to side on first guide arm 42, the fixed pin 77 that is equipped with on the slide 47 up end, slide 47 left end face with it is fixed two mutually exclusive electromagnet 18 that are equipped with on the corresponding position of response chamber 44 left side inner wall, induction system 902 upside is equipped with feedback device 903, feedback device 903 includes bilateral symmetry and fixed setting two first fixed plates 37 on the control chamber 25 left and right sides inner wall, first fixed plate 37 lower terminal surface with fixed second guide arm 39 that is equipped with between the control chamber 25 downside inner wall The second guide rod 39 is provided with a first slide block 19 in an up-and-down sliding manner, a second spring 40 is fixedly arranged between the lower end surface of the first slide block 19 and the inner wall of the lower side of the control cavity 25, a first hinge cavity 21 which is vertically penetrated and has an opening close to the symmetry center of the first fixing plate 37 is arranged in the first sliding block 19, a contact rod 38 is fixedly arranged on the end face of the first slide block 19 close to the symmetrical center side of the first fixing plate 37, a circuit breaking device 904 is arranged in the control cavity 25, the circuit breaking device 904 comprises a fixed rod 71 fixedly arranged on the inner wall of the lower side of the control cavity 25, a first sliding hole 70 with an upward opening is arranged in the fixed rod 71, a sliding rod 68 is arranged in the first sliding hole 70 in a vertical sliding manner, a third spring 69 is fixedly arranged between the lower end surface of the slide rod 68 and the inner wall of the lower side of the first slide hole 70, and a rolling ball 64 is fixedly arranged on the upper end surface of the slide rod 68.

According to the embodiment, the opening and closing device 901 will be described in detail below, the opening and closing device 901 further includes an opening and closing cavity 29 disposed in the working box 11 and having an upper inner wall penetrating through an upper end surface of the working box 11, a push switch 27 is slidably disposed in the opening and closing cavity 29 up and down, a fourth spring 30 is fixedly disposed between a lower end surface of the push switch 27 and a lower inner wall of the opening and closing cavity 29, a connecting rod 28 is fixedly disposed on a lower end surface of the push switch 27, a lower end of the connecting rod 28 extends into the control cavity 25 and a lower end surface of the connecting rod 28 is fixedly disposed with a third sleeve 26, a third conductor 31 having a left end and a right end capable of overlapping the first conductor 23 and the second conductor 35 is disposed in the third sleeve 26, a limiting rod 32 is fixedly disposed on a lower end surface of the third sleeve 26, a locking block 33 is fixedly disposed on a right end surface of the limiting rod 32, a fixing block 58 is fixedly disposed on a rear inner wall, it link up about being equipped with in the fixed block 58 and open up the ascending articulated chamber 60 of second, the articulated chamber 60 of second is fixed down on the terminal surface and is equipped with stopper 59, the articulated dead lever 61 that is equipped with of card between the articulated chamber 60 front and back side inner wall of second, the dead lever 61 pin joint right side of card terminal surface down with the fixed fifth spring 63 that is equipped with between the articulated chamber 60 downside inner wall of second, when pressing down press switch 27 moves down, third conductor 31 with first conductor 23 the coincidence of second conductor 35, the dead block 33 up end of card with the terminal surface is contradicted under the dead lever 61 left side of card under stopper 59's the limiting displacement block die.

In the following, the sensing device 902 is described in detail according to the embodiment, the sensing device 902 further includes a sixth spring 43 fixedly disposed between the right end surface of the sliding plate 47 and the right inner wall of the sensing chamber 44, two second fixing plates 12 are symmetrically and fixedly arranged on the left and right side end faces of the driven box body 46, the left and right inner walls of the transmission cavity 76 are bilaterally symmetrical and are fixedly provided with two third fixing plates 14 positioned on the upper side of the second fixing plate 12, two attracting electromagnets 13 capable of attracting each other are fixedly arranged at the corresponding positions of the lower end surface of the third fixing plate 14 at the corresponding side and the upper end surface of the second fixing plate 12, beneficially, the attracting electromagnets 13 and the mutually-repelling electromagnets 18 are both externally connected with working current, that is, when the third conductor 31 is overlapped with the first conductor 23 and the second conductor 35, the attracting electromagnet 13 and the repulsive electromagnet 18 are electrically operated.

According to the embodiment, the feedback device 903 is described in detail below, the feedback device 903 further includes a feedback rod 16 fixedly disposed between the left and right inner walls of the transmission cavity 76, two sets of second sliding holes 54 with downward openings are symmetrically disposed on the lower end surface of the feedback rod 16, each set of the second sliding holes 54 includes seventeen blocks uniformly arrayed in the left and right direction, sliding pins 56 are slidably disposed in the second sliding holes 54 up and down, seventh springs 50 are fixedly disposed between the upper end surface of the sliding pins 56 and the upper inner wall of the second sliding holes 54, two second sliders 48 are slidably disposed on the feedback rod 16 in the left and right direction, the second sliders 48 can abut against the fixing pins 77, sliding cavities 55 penetrating through the second sliders 48 from left to right are disposed in the second slider 48, five third sliding holes 57 with upward openings are uniformly arrayed in the left and right direction on the lower inner wall of the sliding cavities 55, a sliding tooth block 49 which can be meshed with the sliding pin 56 in an abutting mode is arranged in the third sliding hole 57 in a vertically sliding mode, an eighth spring 20 is fixedly arranged between the lower end face of the sliding tooth block 49 and the lower side inner wall of the third sliding hole 57, a third hinged cavity 53 which is upward in opening and is through from left to right is arranged in the second sliding block 48, two stroke grooves 17 are symmetrically arranged on the upper side inner wall of the transmission cavity 76 and the lower side inner wall of the control cavity 25 in a bilateral mode and are through from top to bottom, a swing rod 41 is hinged between the front side inner wall and the rear side inner wall of the third hinged cavity 53, the other end of the swing rod 41 is hinged to the front side inner wall and the rear side inner wall of the first hinged cavity 21 on the corresponding side, two cavities 74 with downward in opening are symmetrically arranged on the lower end face of the feedback rod 16 in a bilateral mode, a poking rod 72 is hinged between the front side inner wall and the rear side inner wall, the feed-back rod 16 is internally provided with a first threading hole 73, one end of the first threading hole 73 is communicated with the lower end face of the feed-back rod 16, the other end of the first threading hole 73 is divided into two parts in the feed-back rod 16 and is respectively communicated with the upper side inner walls of the two cavities 74, the upper end face of the driven box body 46 is fixedly provided with a first pull rope 15 with certain elasticity, the first pull rope 15 penetrates into the feed-back rod 16 and is divided into two parts in the feed-back rod 16 and is respectively fixedly connected with the upper end faces of the two poking rods 72, the upper side inner wall of the second sliding hole 54 is provided with a second threading hole 52, beneficially, the seventy second threading holes 52 on the left side are converged into one part in the feed-back rod 16 and are communicated with the upper side inner walls of the cavities 74, the upper end face of the sliding pin 56 is fixedly provided with a second pull rope 51, beneficially, seventy pieces of the second pulling rope 51 on the left side are converged into one in the second threading hole 52 and fixedly connected with the upper end face of the shifting rod 72 on the right side, seventy pieces of the second pulling rope 51 on the right side are converged into one in the second threading hole 52 and fixedly connected with the upper end face of the shifting rod 72 on the left side, when the shifting rod 72 rotates in the direction of the ninth spring 75, the second pulling rope 51 is tensioned, and therefore the sliding pin 56 on the corresponding side moves upwards to be disengaged from the collision with the sliding toothed block 49.

According to the embodiment, the circuit breaking device 904 is described in detail below, the circuit breaking device 904 further includes a feedback plate 65 disposed on the upper side of the rolling ball 64, a spherical cavity 67 with a downward opening is disposed in the feedback plate 65, the rolling ball 64 rolls in the spherical cavity 67, the lower end surface of the feedback plate 65 can abut against the upper end surface of the contact rod 38, a return spring 78 is fixedly disposed between the lower end surface of the left side of the feedback plate 65 and the inner wall of the lower side of the control cavity 25, the locking rod 61 is hinged to a return rod 62, an abutting block 66 abutting against the upper end surface of the feedback plate 65 is fixedly disposed on the lower end surface of the return rod 62, when the second guide rod 39 at one side abuts against the lower end surface of the feedback plate 65, the feedback plate 65 is abutted against the side to move upward and the non-abutted side to move downward, when the left and right sides of the feedback plate 65 are both abutted against the contact rod 38, the feedback plate 65 moves upward, the slide rod 68 moves upwards in the first slide hole 70, the third spring 69 is stretched, and the reset rod 62 moves upwards to drive the blocking rod 61 to rotate anticlockwise to release the interference and blocking of the blocking block 33.

The following will describe in detail the usage steps of an automatic circuit breaker protection device with large current fluctuation in this document with reference to fig. 1 to 5:

initially, the push switch 27 is located at the upper side of the open/close cavity 29, the fourth spring 30 is not compressed, the third conductor 31 is not overlapped with the first conductor 23 and the second conductor 35, the deadlocking block 33 is located at the upper side of the deadlocking bar 61, the repelling electromagnets 18 are not electrified, the two repelling electromagnets 18 are not mutually repelled and are mutually butted, the sixth spring 43 is not compressed, the two attracting electromagnets 13 at the corresponding side are not attracted, the first spring 45 is not stretched, the fixing pin 77 is located at the lower side of the second slider 48, the first pulling rope 15 is in a tensioned state, the poke rod 72 is butted against the inner wall at the upper side of the cavity 74 under the pulling force of the first pulling rope 15, the ninth spring 75 is compressed, the second pulling rope 51 is in a relaxed state, the seventh spring 50 is not compressed, the sliding pin 56 is butted against the sliding tooth block 49, the second spring 40 is not stretched, the rod 38 is located at the lower side of the feedback plate 65, the return spring 78 does not accumulate elastic potential, the sliding rod 68 is positioned at the lower side in the first sliding hole 70, the third spring 69 is not stretched, the upper end surface of the feedback plate 65 just props against the propping block 66, the blocking rod 61 is in a horizontal state, and the fifth spring 63 is not stretched;

when in preparation, a circuit is connected in series with the positive terminal post 22 and the negative terminal post 36, the press switch 27 is pressed, the fourth spring 30 is compressed, the press switch 27, the connecting rod 28, the third sleeve 26, the third conductor 31, the limiting rod 32 and the blocking block 33 move downwards, the third conductor 31 moves downwards to be overlapped with the first conductor 23 and the second conductor 35, the circuit is connected, the blocking block 33 is abutted against the blocking rod 61 to rotate anticlockwise and then reset, the upper end face of the blocking block 33 is abutted against the lower end face of the blocking rod 61 to be blocked under the limiting action of the limiting block 59, the circuit is connected, so that the mutual exclusion electromagnet 18 and the attraction electromagnet 13 are electrified to work, beneficially, the response speed of the mutual exclusion electromagnet 18 is higher, the two mutual exclusion electromagnets 18 are electrified to generate mutual repulsion, the sliding plate 47 and the fixing pin 77 move to the middle position on the first guide rod 42 to be the position under the current stable state, the sixth spring 43 is compressed, the two attraction electromagnets 13 on the corresponding side are electrified for attraction, the second fixing plate 12 and the driven box body 46 move upwards, the first spring 45 is stretched, the driven box body 46 moves upwards to loose the first pull rope 15, the pulling force on the poke rod 72 is relieved, the elastic potential energy of the ninth spring 75 is released, the poke rod 72 rotates and moves downwards far away from the symmetrical center end, and the second pull rope 51 is just in a tensioned state;

when the current fluctuates, the current fluctuation affects, when the current rises, the mutual repulsion force of the two repelling electromagnets 18 is enhanced, the sliding plate 47 and the fixed pin 77 move to the right, when the current falls, the mutual repulsion force of the two repelling electromagnets 18 is reduced, the sliding plate 47 and the fixed pin 77 move to the left under the elastic force of the sixth spring 43, when the current suddenly increases or suddenly decreases, the fixed pin 77 moves to the left or moves to the right to abut against the corresponding side second slider 48 to move, the corresponding side sliding tooth block 49 slides relative to the corresponding side sliding pin 56, the corresponding side sliding tooth block 49 moves downwards and the corresponding side eighth spring 20 compresses, the corresponding side swing rod 41 swings to drive the corresponding side first slider 19 and the corresponding side abutting rod 38 to move upwards, the corresponding side second spring 40 stretches, the corresponding side abutting rod 38 moves upwards to drive the feedback plate 65 to move upwards under the abutting side, the return spring 78 stretches or compresses, when the fixed pin 77 moves towards the opposite direction, the moving sliding tooth block 49 is blocked with the sliding pin 56, when the opposite movement range of the fixed pin 77 is smaller and does not conflict with the second slider 48 in the opposite direction, the fixed pin 77 contacts the corresponding side poke rod 72 to move upwards and then reset after moving away from the side end of the symmetric center in the moving process, the ninth spring 75 is compressed and then reset, when the fixed pin 77 resets again, the fixed pin collides with the corresponding side poke rod 72 and drives the poke rod 72 to move downwards away from the side end of the symmetric center, the second pull rope 51 is tensioned, the ninth spring 75 is stretched, the second pull rope 51 is tensioned and drives the opposite sliding pin 56 to move upwards to release the clamping of the sliding gear block 49, the first slider 19, the swing rod 41 and the second slider 48 reset under the elastic force of the second spring 40, when the fixed pin 77 conflicts with the poke rod 72 to a certain position, the poke rod 72 resets under the elastic force of the ninth spring 75, when the opposite movement range of the fixed pin 77 conflicts with the second slider 48 in the opposite direction and moves, the corresponding side abutting rod 38 along the same transmission route moves upwards to abut against the other end of the feedback plate 65, both ends of the feedback plate 65 are abutted so as to move upwards, the sliding rod 68 moves upwards in the first sliding hole 70, the third spring 69 is stretched, the feedback plate 65 moves upwards to abut against the abutting block 66 and the reset rod 62, the blocking block 61 rotates anticlockwise to release blocking of the blocking block 33, the fifth spring 63 is stretched, the blocking block 33, the limiting rod 32, the third sleeve 26, the third conductor 31, the connecting rod 28 and the press switch 27 move upwards under the elastic force of the fourth spring 30, the third conductor 31 is separated from the first conductor 23 and the second conductor 35 to be overlapped, the circuit is broken, the mutual exclusion electromagnet 18 and the mutual attraction electromagnet 13 lose power and reset under the elastic force of the sixth spring 43 and the first spring 45, the first pull rope 15 is tightened again, the ninth spring 75 is compressed again, the upper end face of the poke rod 72 abuts against the upper side inner wall of the cavity 74, the second pull rope 51 is loosened, the sliding pin 56 releases the clamping of the sliding gear block 49, the first sliding block 19 and the second sliding block 48 are both restored under the action of the elastic force of the second spring 40, the feedback plate 65 is restored under the action of the elastic force of the return spring 78, and at the moment, all the devices are restored to the initial position.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a protection device that opens circuit that automatic circuit that fluctuates when great, includes the work box, be equipped with the control chamber in the work box, the fixed positive terminal post that is equipped with on the work box left end face, the work box right-hand member face about the fixed negative terminal post that is equipped with on the positive terminal post corresponds the position, its characterized in that: an opening and closing device is arranged in the control cavity;

the working box body comprises a first sleeve fixedly arranged on the inner wall of the left side of the control cavity, a first conductor is arranged in the first sleeve, the left end face of the first conductor is fixedly connected with the right end face of the positive wiring column, a second sleeve is fixedly arranged on the inner wall of the right side of the control cavity, a second conductor is arranged in the second sleeve, the right end face of the second conductor is fixedly connected with the left end face of the negative wiring column, and a transmission cavity is arranged in the working box body;

the induction device comprises two first springs which are bilaterally symmetrical and fixedly arranged on the inner wall of the lower side of the transmission cavity, a driven box body is fixedly arranged on the upper end surface of each first spring, an induction cavity with an upward opening is arranged in each driven box body, a first guide rod is fixedly arranged between the inner walls of the left side and the right side of the induction cavity, a sliding plate is arranged on each first guide rod in a sliding mode, a fixed pin is fixedly arranged on the upper end surface of the sliding plate, and two mutually exclusive electromagnets which can be mutually exclusive are fixedly arranged on the positions, corresponding to the inner wall of the left side of the induction cavity, of the left end surface of the sliding plate;

a feedback device is arranged on the upper side of the induction device, the feedback device comprises two first fixing plates which are bilaterally symmetrical and fixedly arranged on the inner walls of the left side and the right side of the control cavity, a second guide rod is fixedly arranged between the lower end surface of the first fixing plate and the inner wall of the lower side of the control cavity, a first slide block is arranged on the second guide rod in a vertical sliding manner, a second spring is fixedly arranged between the lower end surface of the first slide block and the inner wall of the lower side of the control cavity, a first hinge cavity which is vertically penetrated and has an opening close to the symmetrical center of the first fixing plate is arranged in the first slide block, and a touch rod is fixedly arranged on the end surface of the first slide block close to the symmetrical;

the control cavity is internally provided with a circuit breaking device, the circuit breaking device comprises a fixed rod fixedly arranged on the inner wall of the lower side of the control cavity, a first sliding hole with an upward opening is arranged in the fixed rod, a sliding rod is arranged in the first sliding hole in an up-and-down sliding mode, a third spring is fixedly arranged between the lower end face of the sliding rod and the inner wall of the lower side of the first sliding hole, and a rolling ball is fixedly arranged on the upper end face of the sliding rod.

2. The circuit breaker protection device of claim 1, which automatically breaks when the current fluctuation is large, wherein: the switching device also comprises a switching cavity which is arranged in the working box body and has a through inner wall at the upper side and the upper end surface of the working box body, a press switch is arranged in the switching cavity in a vertical sliding manner, a fourth spring is fixedly arranged between the lower end surface of the press switch and the lower inner wall of the switching cavity, a connecting rod is fixedly arranged on the lower end surface of the press switch, the lower end of the connecting rod extends into the control cavity and has a third sleeve fixedly arranged on the lower end surface, a third conductor is arranged in the third sleeve, the left end and the right end of the third sleeve can be respectively superposed with the first conductor and the second conductor, a limiting rod is fixedly arranged on the lower end surface of the third sleeve, a clamping block is fixedly arranged on the right end surface of the limiting rod, a fixed block is fixedly arranged on the inner wall at the rear side of the control cavity, a second hinged cavity which has a through left end and right end and an upward opening, the articulated dead lever that is equipped with of second between the articulated chamber front and back side inner wall, dead lever pin joint right side down the terminal surface of card with the articulated chamber downside inner wall of second is fixed and is equipped with the fifth spring.

3. The circuit breaker protection device of claim 1, which automatically breaks when the current fluctuation is large, wherein: induction system still including fixed setting slide right-hand member face with sixth spring between the response chamber right side inner wall, bilateral symmetry and fixed two second fixed plates that are equipped with on the side end face about the driven box, bilateral symmetry and fixed being equipped with two on the side inner wall about the transmission chamber are located the third fixed plate of second fixed plate upside corresponds the side under the third fixed plate terminal surface with the second fixed plate up end corresponds the rigidity and is equipped with two mutually attracting electro-magnets that can the actuation.

4. The circuit breaker protection device of claim 1, which automatically breaks when the current fluctuation is large, wherein: the feedback device further comprises a feedback rod fixedly arranged between the inner walls of the left side and the right side of the transmission cavity, two groups of second sliding holes with downward openings are symmetrically arranged on the lower end surface of the feedback rod in a left-right mode, each group of second sliding holes comprises seventeen blocks which are uniformly arrayed in the left-right direction, sliding pins are arranged in the second sliding holes in a vertical sliding mode, seventh springs are fixedly arranged between the upper end surface of each sliding pin and the inner wall of the upper side of each second sliding hole, two second sliding blocks are symmetrically arranged on the feedback rod in a left-right mode and in a left-right sliding mode, the second sliding blocks can be abutted against the fixed pins, sliding cavities which are communicated in the left-right mode are arranged in the second sliding blocks, five third sliding holes with upward openings are uniformly arrayed in the left-right direction on the inner wall of the lower side of each sliding cavity, sliding tooth blocks which can be engaged with the sliding pins are arranged in the vertical sliding holes in the third sliding holes in a vertical sliding mode, the second slider is internally provided with a third hinged cavity with an upward opening and a through left and right opening, the upper inner wall of the transmission cavity and the lower inner wall of the control cavity are bilaterally symmetrical and are provided with two stroke grooves in a through up-down mode, a swing rod is hinged between the front inner wall and the rear inner wall of the third hinged cavity, the other end of the swing rod is hinged with the front inner wall and the rear inner wall of the first hinged cavity at the corresponding side, the lower end surface of the feedback rod is bilaterally symmetrical and is provided with two cavities with a downward opening, a poke rod is hinged between the front inner wall and the rear inner wall of the cavities, the poke rod is fixedly provided with a ninth spring between the upper end surface of the poke rod and the upper inner wall of the cavities, the feedback rod is internally provided with a first threading hole, one end of the first threading hole is through with the lower end surface of the feedback rod, the other end of the feedback rod, first stay cord penetrates the feedback lever just be divided into two in the feedback lever, respectively with two poker rod up end fixed connection, be equipped with the second through wires hole on the second slide opening upside inner wall, profitable, seventeen on the left side the second through wires hole is in one and the right side of feedback lever internal convergence the cavity upside inner wall link up, the seventeen on the right side the second through wires hole is in one and the left side of feedback lever internal convergence the cavity upside inner wall link up, the fixed second stay cord that is equipped with, profitable, seventeen on the slide pin up end the second stay cord is in one and the right side of the second through wires hole internal convergence one and poker rod up end fixed connection, the right side seventeen the second stay cord is in one and the left side of the second through wires hole internal convergence one poker rod up end fixed connection.

5. The circuit breaker protection device of claim 2, which automatically breaks when the current fluctuation is large, wherein: the circuit breaking device is still including setting up the feedback board of roll ball upside, be equipped with the decurrent spherical chamber of opening in the feedback board, the roll ball is in the spherical intracavity rolls, the terminal surface can with conflict pole up end is contradicted under the feedback board, feedback board left side down terminal surface with fixed reset spring that is equipped with between the control chamber downside inner wall, the articulated release link that is equipped with on the card dead lever, under the release link on the terminal surface fixed be equipped with the touch multitouch that supports of feedback board up end is contradicted.