CN205789801U - The releasing structure of chopper - Google Patents

Abstract

The releasing structure of chopper includes operating mechanism and magnetictrip, operating mechanism moves moving contact component swing and coordinates with static contact with the operation handle linkage of chopper, operating mechanism includes tripping and the snap close that hasp connects, snap close is provided with the elongated end that the push rod with magnetictrip coordinates, and is additionally provided with triggering projection between snap close and moving contact component；During circuit breaker short circuit, the push rod of magnetictrip clashes into the elongated end of snap close, electrodynamic repulsion force between moving contact and the static contact of moving contact component makes moving contact component swing by triggering projection and promotes snap close simultaneously, and the push rod of magnetictrip and moving contact component promote snap close to unlock with tripping jointly.This utility model provides the releasing structure of a kind of chopper, by having additional triggering projection between snap close and moving contact component, realize chopper rapid-releasing, simple in construction and reliable, can be prevented effectively from and cause occurring between dynamic/static contact Welding Phenomena because of drop-away time length, improve the breaking capacity of chopper.

Description

The releasing structure of chopper

Technical field

This utility model relates to Low Voltage Electrical Apparatus, is specifically related to the releasing structure of a kind of chopper.

Background technology

Snap close is backed down to realize circuit breaker tripping mainly by coil push rod during the product short circuit of existing low-voltage circuit breaker, Being embodied in big current induced magnetic field and make unshakable in one's determination and coil spring motion, spring transfers energy to push rod Back down snap close so that operating mechanism unlocks chopper and disconnects.Although in the releasing structure of current chopper, But contact support and snap close have relative motion contact support can not back down snap close acceleration mechanism solution when short circuit is threaded off Lock.Therefore, releasing structure easily occurs Welding Phenomena when carrying out disjunction test between dynamic and static contact, unfavorable Performance boost in chopper.

Utility model content

The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of simple in construction and dropout are fast The releasing structure of the chopper of speed.

For achieving the above object, this utility model adopts the technical scheme that

The releasing structure of a kind of chopper, including operating mechanism and magnetictrip 6, described operating mechanism is with disconnected Operation handle 1 linkage of road device drives moving contact component 5 swing to coordinate with static contact 8, and operating mechanism includes Tripping 3 that hasp connects and snap close 4, what snap close 4 was provided with that the push rod 60 with magnetictrip 6 coordinates prolongs Stretch and between end 41, and snap close 4 and moving contact component 5, be provided with triggering protruding 42；During circuit breaker short circuit, electromagnetism The push rod 60 of electrical apparatus release 6 clashes into the elongated end 41 of snap close 4, simultaneously the moving contact 51 of moving contact component 5 with Electrodynamic repulsion force between static contact 8 makes moving contact component 5 swing by triggering protruding 42 and promotes snap close 4, The push rod 60 of magnetictrip 6 and moving contact component 5 promote snap close 4 to unlock with tripping 3 jointly.

Preferably, the described projection 42 that triggers is arranged on snap close 4, and during circuit breaker short circuit, moving contact 51 is with quiet Electrodynamic repulsion force between contact 8 makes moving contact component 5 swing shock and triggers protruding 42.

Preferably, the described projection 42 that triggers includes the first raised line 42a and the second raised line 42b of angled connection, The the second raised line 42b wherein triggering protruding 42 can contact connection with moving contact component 5 when circuit breaker short circuit.

Preferably, described moving contact component 5 is connected with operation handle 1 by transmission component 2, described Transmission component 2 includes drive link 20 and driver plate 21, and the two ends of drive link 20 are connected to operate handle 1 and driver plate 21 on, operation handle 1 is pivoted on the housing of chopper, and driver plate 21 is by connecting Axle 22 be connected with the contact support 50 of moving contact component 5 and together be pivoted on the housing of chopper, One end of tripping 3 is sleeved on the end that drive link 20 is connected with driver plate 21, and the other end of tripping 3 leads to Crossing the first rotating shaft 23 to be pivoted on driver plate 21, snap close 4 is pivoted on biography by the second rotating shaft 24 On dynamic plate 21, tripping 3 and snap close 4 hasp connect.

Preferably, the both sides of described driver plate 21 are provided with the two groups of moving contacts being connected respectively with the neutral conductor and phase line Assembly 5, often group moving contact component 5 includes contact support 50 and moving contact 51, the connecting shaft 22 being connected Through the connecting shaft hole 210 of driver plate 21 and be exposed on the two ends of driver plate 21 both sides and be respectively installed with two Contact supports 50, and in described contact support 50, cincture connecting shaft 22 is formed around annulus projection 500, use In installing reduction torsion spring 25, the spring body of described reduction torsion spring 25 is sleeved on annulus projection 500, and two ends It is connected to respectively on the convex shoulder 211 of contact support 50 and driver plate 21.

Preferably, described snap close 4 and magnetictrip 6 lay respectively at two contacts and support the both sides of 50, lock Through two contacts, the elongated end 41 of button 4 supports that the gap of 50 is corresponding with the push rod 60 of magnetictrip 6 Arrange.

Preferably, described convex shoulder the 211, first rotating shaft 23 and the second rotating shaft 24 are arranged on driver plate in triangle On 21, described connecting shaft 22 be arranged on driver plate 21 between convex shoulder 211 and the second rotating shaft 24 and The lower section of the first rotating shaft 23.

Preferably, bullet is realized by being provided with back-moving spring 26 between described driver plate 21 and the housing of chopper Property connect, the side of driver plate 21 is provided with described tripping 3 and snap close 4, on the opposite side of driver plate 21 Convexing to form the spacing preiection 212 for card dress back-moving spring 26, the two ends of back-moving spring 26 are connected to respectively In the groove of spacing preiection 212 and on the housing of chopper.

Preferably, one end of described snap close 4 is connected with tripping 3 hasp and is positioned at tripping 3 and moving contact component 5 Between, the middle part of snap close 4 is provided with the second shaft hole 43 coordinated with the second rotating shaft 24, for snap close 4 around Two rotating shafts 24 rotate, and are provided with described triggering protruding 42, snap close 4 between the middle part and the other end of snap close 4 The other end towards push rod 60 extend formed described elongated end 41.

Preferably, described snap close 4 is provided with lock tooth 40, described tripping on the end being connected with tripping 3 hasp The end of 3 is correspondingly provided with and can mutually overlap, with lock tooth 40, the latch hook 30 engaged.

The releasing structure of chopper of the present utility model, tactile by having additional between snap close and moving contact component Send out projection so that when circuit breaker short circuit is threaded off, snap close can be applied to unlock thrust, simultaneously open circuit by moving contact component The magnetictrip that device is threaded off when driving short trouble also can apply to unlock to snap close thrust, thus accelerates to promote Snap close and tripping jump to released state from lock-out state and realize chopper rapid-releasing, simple in construction and reliable, Chopper can be prevented effectively from and cause, because of drop-away time length, the phenomenon that melting welding occurs between dynamic/static contact, improve disconnected The breaking capacity of road device and reliability.Additionally, be arranged to angled two raised line by projection, compared to The projection of one trend, has rigidity and also has certain elastic buffer simultaneously, both can guarantee that moving contact component Active force to snap close, the most also can reduce and trigger the protruding counteracting force to moving contact component, reduces dynamic touching The resistance of head assembly separating brake, avoids rigid collision to cause damage simultaneously, improves disjunction and reliability of structure.

Accompanying drawing explanation

Fig. 1 is the structural representation of chopper of the present utility model；

Fig. 2 is the schematic diagram of the releasing structure of chopper of the present utility model；

Fig. 3 is the structural representation of snap close of the present utility model；

Fig. 4 is the structural representation of driver plate of the present utility model.

Detailed description of the invention

The embodiment be given below in conjunction with accompanying drawing 1 to 4, further illustrates the de-of chopper of the present utility model The detailed description of the invention of buckle structure.The releasing structure of chopper of the present utility model is not limited to following example Describe.

As depicted in figs. 1 and 2, the releasing structure of chopper of the present utility model, including operating mechanism and electricity Magnetic release 6, operating mechanism drives moving contact component 5 to swing and stationary contact with operation handle 1 linkage of chopper 8 coordinate, and operating mechanism includes tripping 3 and the snap close 4 that hasp connects, and snap close 4 is provided with and electromagnetic trip The elongated end 41 that the push rod 60 of device 6 coordinates, and between snap close 4 and moving contact component 5, it is provided with triggering projection 42；During circuit breaker short circuit, the push rod 60 of magnetictrip 6 clashes into the elongated end 41 of snap close 4, simultaneously dynamic tactile Electrodynamic repulsion force between moving contact 51 and the static contact 8 of chopper of head assembly 5 makes moving contact component 5 put Dynamic by triggering protruding 42 promotion snap closes 4, push rod 60 and the moving contact component 5 of magnetictrip 6 push away jointly Dynamic snap close 4 unlocks with tripping 3, jointly to realize circuit breaker tripping.By snap close and moving contact component it Between have additional triggering projection so that circuit breaker short circuit thread off time moving contact component can to snap close apply unlock thrust, The magnetictrip that chopper is threaded off when driving short trouble simultaneously also can apply to unlock thrust to snap close, thus Accelerate to promote snap close and tripping to jump to released state from lock-out state and realize chopper rapid-releasing, structure letter Single and reliable, can be prevented effectively from when chopper does disjunction test and cause between dynamic/static contact because of drop-away time length The phenomenon of melting welding occurs, improves breaking capacity and the reliability of chopper.Further, trigger protruding 42 to set Putting on snap close 4, during circuit breaker short circuit, the electrodynamic repulsion force between moving contact 51 and static contact 8 makes moving contact Assembly 5 swings to clash into and triggers protruding 42.It is of course also possible to it is corresponding with snap close to be that moving contact component is provided with Triggering protruding.

The structure as it is shown on figure 3, triggering protruding 42 is formed in one, including the first raised line 42a of angled connection Become " 7 " font with the second raised line 42b, the first raised line 42a and the second raised line 42b, wherein trigger protruding 42 The second raised line 42b can contact connection with moving contact component 5 when circuit breaker short circuit.Arranged by projection Become two angled raised lines, compared to the projection of a trend, there is rigidity and also there is certain bullet simultaneously Property buffering, both can guarantee that the moving contact component active force to snap close, and the most also can reduce that triggering is protruding touched dynamic The counteracting force of head assembly, reduces the resistance of moving contact component separating brake, avoids rigid collision to cause damage simultaneously, Improve disjunction and reliability of structure.Further, the angle of the first raised line 42a and the second raised line 42b is Obtuse angle.Compared to the most common spring of elastic component, two raised lines arranged in obtuse angle, it is to avoid moving contact component Thrust is wholly or largely absorbed, and transmits by resolving into the decomposing force of both direction, the most effectively prolongs The long arm of force, increases the moving contact component unblock thrust to snap close, reduces again snap close and moving contact component is done separating brake The resistance of motion.Additionally, the first raised line 42a and the junction of the second raised line 42b and the second raised line 42b End all carry out fillet process.Avoid stress to concentrate, strengthen protruding pliability, improve reliability.And And, the second raised line 42b is perpendicular to what the contact of moving contact component 5 was supported to contact with the second raised line 42b on 50 End face, to improve transmission efficiency.Certainly triggering protruding 42 can also be other shapes of boss so that contact Support that snap close can be backed down in upper end, make the operating mechanism of chopper unlock and thread off.

As in figure 2 it is shown, moving contact component 5 and tripping 3 are by transmission component 2 with operation handle 1 linkage even Connecing, transmission component 2 includes drive link 20 and driver plate 21, and the two ends of drive link 20 are connected to operation On handle 1 and driver plate 21, operation handle 1 is pivoted on the housing of chopper, and driver plate 21 leads to Cross connecting shaft 22 be connected with the contact support 50 of moving contact component 5 and together be pivoted on the shell of chopper On body, one end of tripping 3 is sleeved on the end that drive link 20 is connected with driver plate 21, tripping 3 another One end is pivoted on driver plate 21 by the first rotating shaft 23, and snap close 4 pivots peace by the second rotating shaft 24 Being contained on driver plate 21, tripping 3 and snap close 4 hasp connect.Simple and compact for structure, agile, can be fast Speed realizes the break-make of chopper, improves make-break capacity and the reliability of chopper.The present embodiment is moving contact 51 Being arranged on contact and support that on 50, contact support 50 can rotate relative to driver plate 21, contact is supported 50 and locks Button 4 has relative motion, and during chopper disjunction experiment, contact support 50 can touch triggering protruding 42.Certainly Can also be to leave out driver plate 21, tripping 3 and snap close 4 to be arranged in contact support 50, moving contact 51 can Slightly it is rotatably mounted at contact and supports that, on 50, electrodynamic repulsion force during short circuit can make moving contact 51 opposing contact Support 50 rotations so that moving contact 51 and snap close 4 have relative motion, swing to clash into by moving contact 51 and touch Send out protruding 42 thus realize circuit breaker tripping.

Specifically, the both sides of driver plate 21 are provided with the two groups of moving contact components being connected respectively with the neutral conductor and phase line 5, often group moving contact component 5 includes contact support 50 and the moving contact 51 being connected, and connecting shaft 22 is through passing The connecting shaft hole 210 of dynamic plate 21 and be exposed on the two ends of driver plate 21 both sides and be respectively installed with two contacts and prop up Hold 50, in contact support 50 around connecting shaft 22 be formed around annulus projection 500, be used for reset is installed Torsion spring 25, the spring body of reduction torsion spring 25 is sleeved on annulus projection 500, and two ends are connected to contact respectively On the convex shoulder 211 of support 50 and driver plate 21.Additionally, pass through between driver plate 21 and the housing of chopper It is provided with back-moving spring 26 and realizes elastic connection, the side of driver plate 21 is provided with tripping 3 and snap close 4, passes The spacing preiection 212 for card dress back-moving spring 26, back-moving spring is convexed to form on the opposite side of dynamic plate 21 One end of 26 is installed in the spacing preiection 212 of driver plate 21, and the two ends of back-moving spring 26 are connected to respectively In the groove of spacing preiection 212 and on the housing of chopper.Specifically, convex shoulder the 211, first rotating shaft 23 and Two rotating shafts 24 are arranged in triangle on driver plate 21, and connecting shaft 22 is arranged on driver plate 21 and is positioned at convex shoulder 211 and second between the rotating shaft 24 and lower sections of the first rotating shaft 23；It addition, spacing preiection 212 and convex shoulder 211, the first rotating shaft 23 and the second rotating shaft 24 are arranged on driver plate 21 in corner.Overall structure is the tightest Gathering, mutually non-interference, action is orderly and reliable.And, snap close 4 and magnetictrip 6 lay respectively at two Individual contact supports the both sides of 50, and the elongated end 41 of snap close 4 passes two contacts and supports gap and the electromagnetism of 50 The corresponding setting of push rod 60 of electrical apparatus release 6.

As shown in figures 1 and 3, one end of snap close 4 is connected with tripping 3 hasp and is positioned at tripping 3 and moving contact Between assembly 5, this end is provided with the lock tooth 40 coordinated with tripping 3, correspondingly, the end pair of tripping 3 Should be provided with and can mutually overlap, with lock tooth 40, the latch hook 30 engaged, snap close 4 swings and can make lock tooth 40 and lock Hook 30 jumps to released state from lock-out state and realizes circuit breaker tripping；The middle part of snap close 4 is provided with and second turn The second shaft hole 43 that axle 24 coordinates, rotates around the second rotating shaft 24 for snap close 4, is positioned in snap close 4 Being provided with the triggering projection 42 coordinated with moving contact component 5 between portion with the other end, the other end of snap close 4 is towards top Bar 60 extends to be formed to connect on elongated end 41, and this end the thermal trip of the overload protection for chopper 7；Thermal trip 7 includes drag hook 70 and bimetal leaf 71, and one end of drag hook 70 is connected on snap close 4, separately One end is correspondingly arranged with the end of bimetal leaf 71.Under normal "on" position, if there being overcurrent to flow through Thermal trip 7, then overcurrent can make bimetal leaf 71 flexural deformation, then drives drag hook 70 to pull snap close 4 rotate around the second rotating shaft 24 counterclockwise, order about the lock tooth 40 of snap close 4 and the latch hook 30 of tripping 3 Separate, cause lock tooth 40 and latch hook 30 to jump to released state from lock-out state, it is achieved moving contact 51 is with quiet Contact 8 separates.

Short circuit tripping operation process of the present utility model: under normal "on" position, if there being short circuit current to flow through electricity Magnetic release 6, then the push rod 60 of short circuit current instantaneous excitation magnetictrip 6 produces the dropout of transverse shifting Action, touches the elongated end 41 of snap close 4, the electrodynamic repulsion force between moving contact 51 and static contact 8 simultaneously then Contact is made to support 50 to swing the triggering projection 42 clashing into snap close 4 counterclockwise around connecting shaft 22, with Jointly order about snap close 4 to rotate around the second rotating shaft 24 counterclockwise, make lock tooth 40 and the tripping 3 of snap close 4 Latch hook 30 separate, cause lock tooth 40 and latch hook 30 to jump to released state from lock-out state, it is achieved dynamic to touch 51 separate with static contact 8, and chopper completes trip action and is in gate-dividing state as shown in Figure 1.

Above content is to combine concrete preferred implementation further detailed description of the utility model, It cannot be assumed that of the present utility model being embodied as is confined to these explanations.For technology belonging to this utility model For the those of ordinary skill in field, without departing from the concept of the premise utility, it is also possible to if making Dry simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (10)

1. the releasing structure of a chopper, it is characterised in that: include operating mechanism and magnetictrip (6), Described operating mechanism drives moving contact component (5) to swing and stationary contact with operation handle (1) linkage of chopper Head (8) coordinates, and operating mechanism includes tripping (3) and the snap close (4) that hasp connects, and snap close sets on (4) There is an elongated end (41) that the push rod (60) with magnetictrip (6) coordinates, and snap close (4) and moving contact Triggering it is provided with protruding (42) between assembly (5)；During circuit breaker short circuit, the push rod (60) of magnetictrip (6) Clash into the elongated end (41) of snap close (4), the simultaneously moving contact (51) of moving contact component (5) and static contact (8) electrodynamic repulsion force between makes moving contact component (5) swing by triggering protruding (42) and promotes snap close (4), the push rod (60) of magnetictrip (6) and moving contact component (5) jointly promote snap close (4) with Tripping (3) unlocks.

The releasing structure of chopper the most according to claim 1, it is characterised in that: described triggering projection (42) it is arranged on snap close (4), during circuit breaker short circuit between moving contact (51) and static contact (8) Electrodynamic repulsion force makes moving contact component (5) swing shock and triggers protruding (42).

The releasing structure of chopper the most according to claim 1 and 2, it is characterised in that: described triggering Protruding (42) include the first raised line (42a) and second raised line (42b) of angled connection, wherein trigger convex The second raised line (42b) playing (42) can contact connection with moving contact component (5) when circuit breaker short circuit.

The releasing structure of chopper the most according to claim 1, it is characterised in that: described moving contact group Part (5) is connected with operation handle (1) by transmission component (2), and described transmission component (2) wraps Including drive link (20) and driver plate (21), the two ends of drive link (20) are connected to operate handle (1) With on driver plate (21), operation handle (1) is pivoted on the housing of chopper, driver plate (21) Be connected with the contact support (50) of moving contact component (5) by connecting shaft (22) and together be pivoted on On the housing of chopper, one end of tripping (3) is sleeved on what drive link (20) was connected with driver plate (21) On end, the other end of tripping (3) is pivoted on driver plate (21) by the first rotating shaft (23), Snap close (4) is pivoted on driver plate (21) by the second rotating shaft (24), tripping (3) and snap close (4) hasp connects.

The releasing structure of chopper the most according to claim 4, it is characterised in that: described driver plate (21) Both sides be provided with the two groups of moving contact components (5) being connected respectively with the neutral conductor and phase line, often organize moving contact component (5) including contact support (50) and the moving contact (51) being connected, connecting shaft (22) passes driver plate (21) connecting shaft hole (210) and be exposed on the two ends of driver plate (21) both sides and be respectively installed with two and touch Head supports (50), and described contact support (50) is upper is formed around annulus projection (500) around connecting shaft (22), For installing reduction torsion spring (25), the spring body of described reduction torsion spring (25) is sleeved on annulus projection (500) On, and two ends are connected on the convex shoulder (211) of contact support (50) and driver plate (21) respectively.

The releasing structure of chopper the most according to claim 5, it is characterised in that: described snap close (4) With the both sides that magnetictrip (6) lays respectively at two contact supports (50), the elongated end of snap close (4) (41) gap through two contact supports (50) is corresponding with the push rod of magnetictrip (6) (60) Arrange.

The releasing structure of chopper the most according to claim 5, it is characterised in that: described convex shoulder (211), First rotating shaft (23) and the second rotating shaft (24) are arranged in triangle on driver plate (21), described connecting shaft (22) it is arranged on driver plate (21) and is positioned between convex shoulder (211) and the second rotating shaft (24) and first The lower section of rotating shaft (23).

The releasing structure of chopper the most according to claim 4, it is characterised in that: described driver plate (21) And between the housing of chopper, by being provided with, back-moving spring (26) realization is elastic to be connected, driver plate (21) Described tripping (3) and snap close (4) are installed on side, the opposite side of driver plate (21) convexes to form use In the spacing preiection (212) of card dress back-moving spring (26), the two ends of back-moving spring (26) are connected to respectively In the groove of spacing preiection (212) and on the housing of chopper.

The releasing structure of chopper the most according to claim 2, it is characterised in that: described snap close (4) One end be connected with tripping (3) hasp and be positioned between tripping (3) and moving contact component (5), snap close (4) Middle part be provided with the second shaft hole (43) coordinated with the second rotating shaft (24), for snap close (4) around second Rotating shaft (24) rotates, and is positioned between middle part and the other end of snap close (4) and is provided with described triggering projection (42), The other end of snap close (4) extends towards push rod (60) and forms described elongated end (41).

The releasing structure of chopper the most according to claim 9, it is characterised in that: described snap close (4) Being provided with lock tooth (40) on the end being connected with tripping (3) hasp, the end correspondence of described tripping (3) sets Have and can mutually overlap, with lock tooth (40), the latch hook (30) engaged.