CN208207159U - The earth detector of miniature circuit breaker - Google Patents

Abstract

The utility model discloses the earth detectors of miniature circuit breaker, including shell and pedestal, the earth detector structure of this miniature circuit breaker is simple, firewire and zero curve use winding arranged side by side to wind several circles on magnetic flexible cylinder, when normal, magnetic field size caused by two lines is just equal, it is contrary just to offset, irony thin plate and pedestal be in vertical state at this time, due to the electric current of two lines not rebalancing when electrical leakage, magnetic field is no longer cancel out, under normal circumstances, the electric current of firewire is greater than the electric current of zero curve, at this time, irony thin plate deviates forwards, contradict copper post, circuit communication, electromagnet energizing magnetic, attract permanent magnet, fixture block is driven to move downward, leave the groove of cylindrical roller lower end engaging, at this time, under the action of two torque springs, cylindrical roller arcuate rotation to the right, drive arc Shape layers of copper leaves stationary contact block, and effective detection leaks electricity and disconnects power supply.

Description

The earth detector of miniature circuit breaker

Technical field

The utility model relates to power protection technology fields, the specially earth detector of miniature circuit breaker.

Background technique

Leakage circuit breakers refers to the switch of energy auto-action when leakage current is more than predetermined value in circuit, is mainly used for when hair When the electric shock of stranger's body or electric leakage, it can cut off the power rapidly, guarantee personal safety, prevent the generation of electric shock accidents.Miniature circuit breaker Have the advantages that breaking capacity is high, attachment is practical, small in size, light-weight, good appearance, easy to use, in all trades and professions The especially fields such as avenue street lamp power supply, road lamp power supply system, industrial and mining enterprises of organ power supply system, urban and rural housing power supply system obtain To being widely applied.With the continuous development of science and technology, new product continues to bring out, and the continuous improvement of controlled level needs Defencive function is increasingly comprehensive, and the earth detector of leakage circuit breakers seems with certain limitation, for this purpose, it is proposed that small The earth detector of type breaker.

Utility model content

The purpose of this utility model is to provide the earth detectors of miniature circuit breaker, to solve in above-mentioned background technique The problem of proposition.

To achieve the above object, the utility model provides the following technical solutions:

The earth detector of miniature circuit breaker, including shell and pedestal, shell is hollow structure inside, and shell is interior Bottom wall is fixedly connected with the lower end of pedestal, and the upper end of the pedestal is symmetrically fixedly connected with the lower end there are two magnetic flexible cylinder, and position In being wound with firewire on the magnetic flexible cylinder of front side, one end of the firewire runs through the side side wall of shell and reaches the outer of shell Chamber, and the other end of firewire runs through the roof of shell and reaches the exocoel of shell, winds on the magnetic flexible cylinder of rear side There is zero curve, and one end of zero curve runs through the side side wall of shell and reaches the exocoel of shell, the other end of zero curve is through shell The upper center of roof and the exocoel for reaching shell, the pedestal is hinged with the lower end of irony thin plate, and the two sides of irony thin plate Side wall passes through multiple first springs and the upper end of pedestal connects, and the two sides of the irony thin plate are symmetrically arranged with four copper posts, and The lower end of the four copper posts and upper end of pedestal is vertical is fixedly connected, the shell in the side inner bottom wall of pedestal far from being fixedly connected Sleeved lower end, and the inner bottom wall of sleeve is fixedly connected with the lower end of electromagnet, the upper end of the electromagnet pass through multiple the Two springs are connected with the lower end of permanent magnet, and the side wall of permanent magnet and the inner sidewall of sleeve are slidably connected, the permanent magnet it is upper End middle part is vertically connected with the lower end of support rod, and the upper end of support rod reaches the exocoel of sleeve and vertical through the roof of sleeve In the middle part of the lower end for connecting fixture block, the fixture block is slidably connected in the groove that cylindrical roller lower end opens up, and the side of cylindrical roller It is fixed in the middle part of wall to be plugged with shaft, the inner sidewall rotation connection opposite with shell of the both ends of the shaft, and symmetrically covered in shaft It connects there are two torque spring, the side wall both ends of two torque springs opposite side and cylindrical roller connect, and two torsions The side of power spring the being located remotely from each other inner sidewall connection opposite with shell, the shell are offered far from the side upper end of pedestal The strip through-hole to match with cylindrical roller, the upper end of the cylindrical roller reach the exocoel of shell and vertical through strip through-hole The lower end of connection switch handle, and cylindrical roller is fixedly connected with arc layers of copper close to the side side wall lower ends of pedestal, it is described outer The inner sidewall upper end of shell is fixedly connected with the stationary contact block to match with arc layers of copper.

Preferably, the quantity of the second spring is no less than four, and multiple second spring circular arrays are distributed.

Preferably, the height of four copper posts is less than the height of irony thin plate.

Preferably, the stationary contact block is arcuate structure close to the side side wall of arc layers of copper.

Compared with prior art, the utility model has the beneficial effects that the earth detector structure of this miniature circuit breaker Simply, firewire and zero curve use winding arranged side by side to wind several circles on magnetic flexible cylinder, when normal, magnetic caused by two lines Size is just equal, contrary just to offset, at this time irony thin plate and pedestal in vertical state, when electrical leakage Since rebalancing, magnetic field are not no longer cancel out for the electric currents of two lines, under normal circumstances, the electric current of firewire is greater than the electric current of zero curve, this When, irony thin plate deviates forwards, contradicts and arrives copper post, circuit communication, and electromagnet energizing magnetic attracts permanent magnet, drives Fixture block moves downward, and leaves the groove of cylindrical roller lower end engaging, at this point, under the action of two torque springs, cylindrical roller Arcuate rotation to the right drives arc layers of copper to leave stationary contact block, and circuit disconnects, and effective detection leaks electricity and disconnects power supply.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is A-A structural schematic diagram.

In figure: shell 1, pedestal 2, magnetic flexible cylinder 3, firewire 4, zero curve 5, irony thin plate 6, copper post 7, sleeve 8, electromagnet 9, Permanent magnet 10, fixture block 11, cylindrical roller 12, shaft 13, switch handle 14, arc layers of copper 15.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2:

The earth detector of miniature circuit breaker, including shell 1 and pedestal 2, shell 1 are hollow structure inside, and shell 1 Inner bottom wall be fixedly connected with the lower end of pedestal 2, the upper end of pedestal 2 is symmetrically fixedly connected with the lower end there are two magnetic flexible cylinder 3, and Firewire 4 is wound on the magnetic flexible cylinder 3 of front side, one end of firewire 4 runs through the side side wall of shell 1 and reaches shell 1 Exocoel, and the other end of firewire 4 runs through the roof of shell 1 and reaches the exocoel of shell 1, twines on the magnetic flexible cylinder 3 of rear side It is wound with zero curve 5, and one end of zero curve 5 runs through the side side wall of shell 1 and reaches the exocoel of shell 1, the other end of zero curve 5 runs through The roof of shell 1 and the exocoel for reaching shell 1, the upper center of pedestal 2 are hinged with the lower end of irony thin plate 6, and irony thin plate 6 Two sides side wall pass through multiple first springs and connect with the upper end of pedestal 2, the two sides of irony thin plate 6 are symmetrically arranged with four copper posts 7, and the lower end of four copper posts 7 is vertical with the upper end of pedestal 2 is fixedly connected, the height of four copper posts 7 is less than the height of irony thin plate 6 Degree, convenient for contradicting, shell 1 is far from the lower end for being fixedly connected with sleeve 8 in the side inner bottom wall of pedestal 2, and the inner bottom wall of sleeve 8 It is fixedly connected with the lower end of electromagnet 9, the upper end of electromagnet 9 is connected with the lower end of permanent magnet 10 by multiple second springs, and The side wall of permanent magnet 10 and the inner sidewall of sleeve 8 are slidably connected, and the quantity of second spring is no less than four, and multiple second springs Circular array distribution, prevents permanent magnet 10 from shifting, and the upper center of permanent magnet 10 is vertically connected with the lower end of support rod, And the upper end of support rod is run through the exocoel of the roof arrival sleeve 8 of sleeve 8 and is vertically connected in the middle part of the lower end of fixture block 11, fixture block 11 It is slidably connected in the groove that 12 lower end of cylindrical roller opens up, and fixation is plugged with shaft 13 in the middle part of the side wall of cylindrical roller 12, The inner sidewall rotation connection opposite with shell 1 of the both ends of shaft 13, and symmetrically socket is there are two torque spring in shaft 13, two The opposite side of torque spring is connect with the side wall both ends of cylindrical roller 12, and the side of two torque springs being located remotely from each other with The opposite inner sidewall connection of shell 1, shell 1 offer the bar shaped to match with cylindrical roller 12 far from the side upper end of pedestal 2 Through-hole, the upper end of cylindrical roller 12 reach the exocoel of shell 1 and the lower end of vertical connection switch handle 14 through strip through-hole, and Cylindrical roller 12 is fixedly connected with arc layers of copper 15 close to the side side wall lower ends of pedestal 2, and the inner sidewall upper end of shell 1 is fixed to be connected It is connected to the stationary contact block to match with arc layers of copper 15, stationary contact block is arcuate structure close to the side side wall of arc layers of copper 15, is convenient for It contradicts, irony thin plate 6 and copper post 7 and external power supply collectively constitute a series circuit, firewire 4 and arc layers of copper 15 by conducting wire One series circuit, zero curve 5 and stationary contact block are collectively constituted by conducting wire with external power supply and external power supply passes through common group of conducting wire At a series circuit.

Working principle: firewire 4 and zero curve 5 use winding arranged side by side to wind several circles on magnetic flexible cylinder 3, when normal, Magnetic field size caused by two lines is just equal, contrary just to offset, at this time irony thin plate 6 and the perpendicular shape of pedestal 2 State, since rebalancing, magnetic field are not no longer cancel out the electric current of two lines when electrical leakage, under normal circumstances, the electricity of firewire 4 Stream is greater than the electric current of zero curve 5, at this point, irony thin plate 6 deviates forwards, contradicts and arrives copper post 7, circuit communication, electromagnet 9, which is powered, to be produced Magnetisation attracts permanent magnet 10, and fixture block 11 is driven to move downward, and the groove of 12 lower end of cylindrical roller engaging is left, at this point, two Under the action of a torque spring, arcuate rotation, drive arc layers of copper 15 leave stationary contact block to cylindrical roller 12 to the right, and circuit is disconnected It opens, effective detection leaks electricity and disconnects power supply.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. the earth detector of miniature circuit breaker, including shell (1) and pedestal (2), shell (1) is hollow structure inside, and The inner bottom wall of shell (1) is fixedly connected with the lower end of pedestal (2), it is characterised in that: the upper end of the pedestal (2) is symmetrically fixed to be connected The lower end there are two magnetic flexible cylinder (3) is connect, and is located on the magnetic flexible cylinder (3) of front side and is wound with firewire (4), the firewire (4) One end through shell (1) side side wall and reach the exocoel of shell (1), and the other end of firewire (4) is through shell (1) Roof and the exocoel for reaching shell (1) are wound with zero curve (5) on the magnetic flexible cylinder (3) of rear side, and zero curve (5) One end runs through the side side wall of shell (1) and reaches the exocoel of shell (1), and the other end of zero curve (5) runs through the roof of shell (1) And the exocoel of shell (1) is reached, the upper center of the pedestal (2) is hinged with the lower end of irony thin plate (6), and irony thin plate (6) two sides side wall passes through multiple first springs and connect with the upper end of pedestal (2), and the two sides of the irony thin plate (6) are symmetrical If there are four copper post (7), and the lower end of four copper posts (7) is vertical with the upper end of pedestal (2) is fixedly connected, the shell (1) is far The lower end of sleeve (8) is fixedly connected in side inner bottom wall from pedestal (2), and the inner bottom wall of sleeve (8) is fixedly connected with electricity The upper end of the lower end of magnet (9), the electromagnet (9) is connected with the lower end of permanent magnet (10) by multiple second springs, and forever The side wall of magnet (10) and the inner sidewall of sleeve (8) are slidably connected, and the upper center of the permanent magnet (10) is vertically connected with branch The lower end of strut, and roof of the upper end of support rod through sleeve (8) reaches the exocoel of sleeve (8) and vertically connects fixture block (11) Lower end in the middle part of, the fixture block (11) is slidably connected in the groove that cylindrical roller (12) lower end opens up, and cylindrical roller (12) Side wall in the middle part of fixation be plugged with shaft (13), the both ends of the shaft (13) and shell (1) opposite inner sidewall are rotatablely connected, And in shaft (13) symmetrically socket there are two torque spring, the opposite side of two torque springs and cylindrical roller (12) The connection of side wall both ends, and the side of two torque springs the being located remotely from each other inner sidewall opposite with shell (1) is connect, the shell (1) the side upper end far from pedestal (2) offers the strip through-hole to match with cylindrical roller (12), the cylindrical roller (12) Upper end the exocoel of shell (1) and the lower end of vertical connection switch handle (14), and cylindrical roller are reached through strip through-hole (12) the side side wall lower ends close to pedestal (2) are fixedly connected with arc layers of copper (15), and the inner sidewall upper end of the shell (1) is solid Surely it is connected with the stationary contact block to match with arc layers of copper (15).

2. the earth detector of miniature circuit breaker according to claim 1, it is characterised in that: the number of the second spring Amount no less than four, and multiple second spring circular arrays are distributed.

3. the earth detector of miniature circuit breaker according to claim 1, it is characterised in that: four copper posts (7) Height be less than irony thin plate (6) height.

4. the earth detector of miniature circuit breaker according to claim 1, it is characterised in that: the stationary contact block is close to arc The side side wall of shape layers of copper (15) is arcuate structure.