CN109659210B - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN109659210B CN109659210B CN201811470300.0A CN201811470300A CN109659210B CN 109659210 B CN109659210 B CN 109659210B CN 201811470300 A CN201811470300 A CN 201811470300A CN 109659210 B CN109659210 B CN 109659210B
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- Prior art keywords
- contact
- button
- protection
- conductive plate
- circuit breaker
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- 238000012360 testing method Methods 0.000 claims abstract description 100
- 238000005192 partition Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims 4
- 230000007935 neutral effect Effects 0.000 description 37
- 230000008878 coupling Effects 0.000 description 30
- 238000010168 coupling process Methods 0.000 description 30
- 238000005859 coupling reaction Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
- H01H73/40—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by tumbler
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The circuit breaker comprises a shell, and a circuit breaker phase electrode and a leakage protection electrode which are arranged on two sides of the shell side by side, wherein the leakage protection electrode comprises a zero-sequence current transformer, a leakage operating mechanism and a leakage testing mechanism, and a main loop of the circuit breaker phase electrode passes through the zero-sequence current transformer; the electric leakage testing mechanism comprises an elastic piece, a testing button and a first contact piece and a second contact piece which are connected to two ends of a testing loop respectively, wherein one end of the elastic piece is provided with a first contact part matched with the operating mechanism, the other end of the elastic piece is provided with a second contact part matched with the testing button, the electric leakage operating mechanism can push the first contact part to contact with the first contact piece when the circuit breaker is closed, the testing button can push the second contact part to contact with the second contact piece, the testing mechanism forms the testing loop with double break points through the first contact part and the second contact part on the elastic piece, and the first contact part and the second contact part are driven by the electric leakage operating mechanism and the testing button respectively.
Description
Technical Field
The invention relates to the field of piezoelectric devices, in particular to a circuit breaker.
Background
The test mechanism of the circuit breaker is limited by the space of the shell, a test loop of the test mechanism usually adopts a single-breakpoint structure, but when the circuit breaker is switched off, if a test button of the test mechanism is pressed, the outgoing line end of the circuit breaker can generate ground voltage because of the conduction of the test loop, the risk of electric shock is caused in the use process, and the safety regulation of a specific area is not met, and certain limitations exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a circuit breaker with simple structure and high reliability.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the circuit breaker comprises a shell, and a circuit breaker phase electrode 1 and a leakage protection electrode 2 which are arranged on two sides of the shell side by side, wherein the leakage protection electrode 2 comprises a zero sequence current transformer 21, a leakage operating mechanism 22 and a leakage testing mechanism 25, and a main loop of the circuit breaker phase electrode 1 passes through the zero sequence current transformer 21; the leakage testing mechanism 25 comprises an elastic piece 26, a testing button 29, and a first contact piece 27 and a second contact piece 28 which are respectively connected to two ends of the testing loop, wherein one end of the elastic piece 26 is provided with a first contact portion 261 matched with the operating mechanism 14, the other end of the elastic piece 26 is provided with a second contact portion 262 matched with the testing button 29, the leakage operating mechanism 22 can push the first contact portion 261 to be contacted with the first contact piece 27 when the circuit breaker is closed, and the testing button 29 can push the second contact portion 262 to be contacted with the second contact piece 28.
Preferably, the leakage operation mechanism 22 includes a protection lever 221 pivotally mounted in the housing, and a protection trip button 222 and a protection latch 224 pivotally mounted on the protection lever 221 and engaged with each other, wherein the protection trip button 222 is hinged to one end of the protection link 223, the other end of the protection link 223 is hinged to the breaker handle 31, one end of the protection latch 224 is correspondingly disposed to the leakage release 23, the first contact member 27 is disposed on one side of the protection lever 221, and the first contact portion 261 of the elastic member 26 extends between the protection lever 221 and the first contact member 27 to be engaged with the protection lever 221, so that the elastic member 26 drives the protection lever 221 to rotate faster during releasing.
Preferably, the elastic member 26 is a torsion spring, the elastic member 26 includes a spiral portion 263 connected between the first contact portion 261 and the second contact portion 262, the spiral portion 263 is mounted on the spring shaft 260 of the housing, the first contact portion 261 and the second contact portion 262 are perpendicular to the axis of the spiral portion 263, the first contact portion 261 extends between the protection lever 221 and the first contact member 27, and the second contact portion 262 extends between the test button 29 and the second contact member 28. 4. Preferably, the first contact member 27 and the second contact member 28 are disposed below the leakage operation mechanism 22, the first contact member 27 is disposed between the second contact member 28 and the elastic member 26, the test button 29 is located on one side of the leakage operation mechanism 22 and above the second contact portion 262, the length of the second contact portion 262 is greater than that of the first contact portion 261, one end of the second contact portion 262 near the spiral portion 263 is matched with the test button 29, the other end of the second contact portion 262 passes through one side of the first contact member 27 and extends above the second contact member 28, and a test resistor 251 connected with the first contact member 27 is disposed below the first contact member 27 and the elastic member 26.
Preferably, a first pushing boss 2211 extending towards one side of the first contact portion 261 is disposed on the back surface of the protection lever 221, a second pushing boss 2212 extending towards the side surface is disposed on the side edge of the protection lever 221, and a pushing step surface 2213 limiting the first contact portion 261 is formed between the second pushing boss 2212 and the first pushing boss 2211.
Preferably, the first contact member 27 includes a first conductive plate 271 disposed along an axial direction of the spiral portion 263, the elastic member 26 is disposed at intervals from a spacer 32 between the phase pole 1 and the drain electrode 2 of the circuit breaker along the axial direction, one end of the first conductive plate 271 is connected to the spacer 32, and the other end of the first conductive plate 271 extends to one side of the protection lever 221 along the axial direction of the spiral portion 263 to be suspended.
Preferably, the first contact 27 further includes a second conductive plate 272, the length direction of the second conductive plate 272 is perpendicular to the first conductive plate 271, one end of the second conductive plate 272 is opposite to one end of the first conductive plate 271, one end of the second conductive plate 272 is connected to a side edge of one side of the first conductive plate 271 through a third conductive plate 273 to form a first mounting portion of a U-shaped structure, a first mounting groove 270 connected to the first mounting portion is formed on the partition 32, and the other end of the second conductive plate 272 extends out of the first mounting groove 270.
Preferably, the side edge of the first conductive plate 271 near the elastic member 26 is connected to the fourth conductive plate 274, the third conductive plate 273 is connected to the side edge of the first conductive plate 271 far from the elastic member 26 so that the opening of the U-shaped first mounting portion faces the elastic member 26, a test resistor 251 is disposed between the elastic member 26 and the first conductive plate 271 on the side far from the second conductive plate 272, one end of the fourth conductive plate 274 is vertically connected to the side of the opening of the first mounting portion, and the other end of the fourth conductive plate 274 extends toward the test resistor 251 and is provided with a connection hole 275 for connecting the test resistor 251 to the fourth conductive plate 274.
Preferably, the first contact portion 261 includes a first contact arm 261a, a second contact arm 261b and a third contact arm 261c connected in a U-shape, the first contact arm 261a is disposed opposite to the third contact arm 261c, the second contact arm 261b is vertically connected between the first contact arm 261a and one end of the third contact arm 261c, the other end of the first contact arm 261a is connected with the spiral portion 263, the other end of the third contact arm 261c is connected with the fourth contact arm 261d, the fourth contact arm 261d extends between the test button 29 and the second contact member 28, a spring limit groove 261e for limiting the first contact arm 261a, the second contact arm 261b and the third contact arm 261c is disposed in the housing, and the first contact portion 261 is inserted into the spring limit groove 261e along the direction of the second contact arm 261b for limiting fit; the fourth contact arm 261d is disposed substantially parallel to the first contact portion 261, and the first contact arm 261a, the second contact arm 261b, and the third contact arm 261c are disposed perpendicularly to the first contact portion 261.
Preferably, a partition plate 32 is arranged between the breaker phase electrode 1 and the drain protection electrode 2, a second installation boss 280 arranged along the axis direction of the spiral portion 263 is arranged on the partition plate 32, the second contact 28 comprises a first conductive wire 281 which is U-shaped and reversely buckled on the second installation boss 280, one end of the first conductive wire 281 is located on the top side of the second installation boss 280 and matched with the second contact portion 262, and the other end of the first conductive wire 281 is located on the bottom side of the second installation boss 280 and connected with a main circuit of the breaker phase electrode 1 through the second conductive wire 282.
Preferably, the test button 29 includes a button connection portion 291, a button operation portion 292 and a button pushing portion 293 respectively disposed at two ends of the button connection portion 291, wherein the other end of the button operation portion 292 extends out of the housing, the other end of the button pushing portion 293 is engaged with the first contact portion 261, the button pushing portion 293 is disposed at a distance from the partition 32, a button guide plate 294 extending toward the button pushing portion 293 is disposed on the partition 32, and a button guide groove 295 slidably engaged with the button guide plate 294 is disposed on a side surface of the button pushing portion 293; the button connecting part 291 is connected with one end of the top side of the button pushing part 293, the other end of the top side of the button pushing part 293 is in limit fit with the shell, a first button pushing part 297 and a second button pushing part 298 which respectively extend to two sides of the first contact part 261 are arranged on the bottom side of the button pushing part 293, and a button pushing groove 299 in limit fit with the first contact part 261 is formed between the first button pushing part 297 and the second button pushing part 298; the button guide 294 is provided at a side thereof with a contact guide groove 296 mated with the first contact portion 261.
Preferably, a protection lever shaft hole 2210 rotationally connected with the shell is arranged in the middle of one side of the protection lever 221, a lock catch shaft hole 2218 connected with the lock catch 224 is arranged in the middle of the front side of the protection lever 221, a jump button shaft 2217 and a protection lever shaft 2216 are respectively arranged at two sides of the lock catch shaft hole 2218 correspondingly, the jump button shaft 2217 is connected with the jump button 222, and the protection lever shaft 2216 is connected with the shell; the back of the protection lever 221 is provided with a first lever boss 2214 corresponding to the other side of the protection lever shaft hole 2210, the top angle of the back of the protection lever 221 corresponding to one side of the protection lever shaft hole 2210 is provided with a first pushing boss 2211 extending towards one side of the first contact portion 261, the other side of the protection lever shaft hole 2210 opposite to the first pushing boss 2211 is provided with a second lever boss 2215, and one side of the first lever boss 2214 far away from the protection lever shaft hole 2210 is provided with a first lever groove 2219.
According to the circuit breaker provided by the invention, the test mechanism 25 forms a test loop with double break points through the first contact part 261 and the second contact part 262 on the elastic piece 26, and the first contact part 261 and the second contact part 262 are respectively driven by the leakage operating mechanism 22 and the test button 29, so that the circuit breaker can ensure that the test button 29 is not conducted when the phase pole 1 of the circuit breaker is disconnected, the reliability of the circuit breaker is improved, and the elastic piece 26 is matched with the leakage operating mechanism 22, and the action speed of the leakage operating mechanism 22 is also improved.
In addition, the elastic piece 26 adopts the torsion spring, so that the elastic piece 26 can be directly sleeved in the shell, the shell limits one end of the elastic piece 26 through the spring limiting groove 261e, the assembly difficulty can be further reduced, and the novel spring type spring fixing device has the characteristics of simple structure and low cost.
In addition, the first conductive plate 271 can avoid the damage of the case due to the hard contact by itself elastically buffering when contacting the first contact portion 261 by fitting one end of the suspended arrangement with the protection lever 221 and the first contact portion 261.
Drawings
Fig. 1 is a schematic structural view of a circuit breaker;
FIG. 2 is a schematic diagram of a drain electrode according to a first embodiment;
Fig. 3 is a front view of the drain electrode in the first embodiment;
FIG. 4 is a schematic diagram showing another structure of a drain electrode according to the first embodiment;
FIG. 5 is a schematic view of the structure of an elastic member in the first embodiment;
FIG. 6 is a schematic view of the structure of a first contact member according to the first embodiment;
FIG. 7 is a schematic diagram of the structure of a test button in the first embodiment;
fig. 8 is a schematic view of the structure of the front surface of the protection lever in the first embodiment;
fig. 9 is a schematic view of the structure of the back surface of the protection lever in the first embodiment;
fig. 10 is a front view of a phase pole of a circuit breaker in the second embodiment;
fig. 11 is a front view of a drain electrode in the second embodiment;
FIG. 12 is a schematic diagram showing the cooperation of the leakage testing mechanism and the leakage operating mechanism according to the second embodiment;
fig. 13 is a schematic view of a neutral pole moving contact, a protection driving rod, a protection lever and a cooperation in the second embodiment;
FIG. 14 is a side view of FIG. 12;
FIG. 15 is a schematic view of the structure of an elastic member in the second embodiment;
fig. 16 is a schematic structural view of a protective driving lever in the second embodiment;
FIG. 17 is a schematic diagram of the structure of a test button in the second embodiment;
FIG. 18 is a schematic diagram of the coupling drive rod and the protection lever of the second embodiment.
Detailed Description
Embodiments of the circuit breaker of the present invention are further described below with reference to the examples shown in fig. 1 to 18. The circuit breaker of the present invention is not limited to the description of the following embodiments.
As shown in fig. 1-4 and 9-10, the circuit breaker of the invention comprises a shell, and a circuit breaker phase electrode 1 and a leakage protection electrode 2 which are arranged on two sides of the shell side by side, wherein a partition plate 32 is arranged between the circuit breaker phase electrode 1 and the leakage protection electrode 2, the circuit breaker phase electrode 1 comprises a fixed contact 111 and a movable contact 112 which are oppositely arranged and respectively connected with a circuit, the movable contact 112 is arranged on an operating mechanism 14 to swing and cooperate with the fixed contact 111, the leakage protection electrode 2 comprises a zero sequence current transformer 21, a leakage operating mechanism 22 and a leakage test mechanism 25, a main loop of the circuit breaker phase electrode 1 passes through the zero sequence current transformer 21, and when the zero sequence current transformer 21 can generate leakage current in the main loop, the movable contact 112 is driven to be separated from the fixed contact 111 by unlocking the operating mechanism 14 through the leakage operating mechanism 22;
the leakage testing mechanism 25 comprises an elastic piece 26, a testing button 29, and a first contact piece 27 and a second contact piece 28 which are respectively connected into a main circuit of the circuit breaker phase electrode 1, one end of the elastic piece 26 is provided with a first contact portion 261 matched with the leakage operation mechanism 22, the other end of the elastic piece 26 is provided with a second contact portion 262 matched with the testing button 29, the leakage operation mechanism 22 can push the first contact portion 261 to be contacted with the first contact piece 27 when the circuit breaker phase electrode 1 is closed, the testing button 29 can push the second contact portion 262 to be contacted with the second contact piece 28, and the first contact portion 261 and the second contact portion 262 can be conducted to the testing circuit to generate a leakage testing signal in the main circuit when the first contact portion 261 and the second contact portion 262 are respectively contacted with the first contact piece 27 and the second contact piece 28.
According to the circuit breaker provided by the invention, the test mechanism 25 forms a double-breakpoint test loop through the first contact part 261 and the second contact part 262 on the elastic piece 26, and the first contact part 261 and the second contact part 262 are respectively driven by the leakage operation mechanism 22 and the test button 29, so that the circuit breaker can be ensured to be disconnected by pressing the test button 29 when the phase electrode 1 of the circuit breaker is disconnected, the reliability of the circuit breaker is improved, and the action speed of the leakage operation mechanism 22 can be improved through the cooperation of the first contact part 261 and the leakage operation mechanism 22, and particularly, when overload or leakage current occurs to a circuit, the leakage operation mechanism 22 can be helped to trip the circuit breaker to cut off the circuit.
As shown in fig. 10, in one embodiment of the operating mechanism 14, the operating mechanism 14 includes a breaker energy storage member, a rocker arm 141 pivotally mounted in a housing and connected to the moving contact 112, a trip button 142 and a latch 143 pivotally mounted on the rocker arm 141 and snap-fitted to each other, respectively, and a link 144 hinged to the trip button 142, the other end of the link 144 being hinged to a breaker handle 31 extending out of the housing, the operating mechanism 14 being balanced when the trip button 142 and the latch 143 are snap-fitted to each other, the breaker handle 31 being capable of driving the operating mechanism 14 to bring the moving contact 112 into contact with the stationary contact 111 to conduct the main circuit and to separate the main circuit to close and open the breaker, and to store energy for the breaker energy storage member during closing.
Further, the breaker phase electrode 1 comprises an electromagnetic tripping mechanism 12, a double-gold tripping mechanism 13 and an arc extinguishing mechanism, a fixed contact 111 is fixed in a shell and is connected with the electromagnetic tripping mechanism 12 and a wiring terminal 15 at the left end through a main loop conductive piece, a moving contact 112 is arranged on an operating mechanism 14 to swing to be matched with the fixed contact 111, and is connected with the double-gold tripping mechanism 13 and the wiring terminal 15 at the right end through the main loop conductive piece, when a circuit is short-circuited, overloaded and leaked, the tripping mechanism 12, the double-gold tripping mechanism 13 and the leakage operating mechanism 22 drive a tripping buckle 142 and a locking buckle 143 to separate from each other respectively, so that the operating mechanism 14 is unbalanced, and the energy storage piece releases energy to drive the moving contact 112 to leave the fixed contact 111 to disconnect the main loop, thereby realizing protection of the fault circuit.
Referring to the first embodiment shown in fig. 2-9, the leakage operation mechanism 22 and the leakage test mechanism 25 are correspondingly disposed on one side above the zero sequence current transformer 21, the leakage release 23 is disposed on the other side above the zero sequence current transformer 21, the breaker handle 31 is correspondingly disposed above the leakage release 23, the leakage operation mechanism 22 includes a protection lever 221 pivotally mounted in the housing, and a protection trip 222 and a protection latch 224 pivotally mounted on the protection lever 221 and in snap fit with each other, the protection trip 222 is hinged to one end of the protection link 223, the other end of the protection link 223 is hinged to the breaker handle 31, one end of the protection latch 224 is correspondingly disposed with the leakage release 23, the first contact 27 is disposed on one side of the protection lever 221, the first contact portion 261 of the elastic member 26 extends between the protection lever 221 and the first contact 27 and is matched with the protection lever 221, when the breaker handle 31 rotates to the closing position, the protection lever 221 is driven to rotate and push the first contact portion 261 to the first contact handle 27 through the protection link 223, and when the protection link 223, the protection trip 222 and the protection latch 224 drive the first contact portion 261 to rotate to the first contact portion 261 to the first contact position, and the first contact portion is driven to rotate to the first contact portion 261 to the reset position to the first contact portion to the breaker handle 31.
Referring to fig. 5, a first embodiment of the elastic member 26 is shown, the elastic member 26 is a torsion spring, the elastic member 26 includes a spiral portion 263 connected between a first contact portion 261 and a second contact portion 262, the spiral portion 263 is mounted on a spring shaft 260 of the housing, the first contact portion 261 and the second contact portion 262 are both disposed perpendicular to an axis of the spiral portion 263, the first contact portion 261 extends between the protection lever 221 and the first contact member 27, the second contact portion 262 extends between the test button 29 and the second contact member 28, the first contact portion 261 includes a first contact arm 261a, a second contact arm 261b and a third contact arm 261c connected in a U-shape, the first contact arm 261a is disposed opposite to the third contact arm 261c, the second contact arm 261b is vertically connected between one ends of the first contact arm 261a and the third contact arm 261c, the other end of the third contact arm 261c is connected to a fourth contact arm 261d, the fourth contact arm 261d extends between the test button 29 and the second contact arm 261b, and the first contact arm 261c is disposed in the housing is provided with a limit groove. The elastic piece 26 adopts the torsional spring, so that the elastic piece 26 can be directly sleeved in the shell, the shell limits one end of the elastic piece 26 through the spring limiting groove 261e, the assembly difficulty can be further reduced, and the novel spring type spring fixing device has the characteristics of simple structure and low cost.
Further, the fourth contact arm 261d is disposed substantially parallel to the first contact portion 261, and the first contact arm 261a, the second contact arm 261b, and the third contact arm 261c are disposed perpendicular to the first contact portion 261, so that the balance of the elastic member 26 can be improved, and the elastic member 26 can be more reliably fixed in the housing when receiving torque.
Further, the first contact 27 and the second contact 28 are disposed below the leakage operation mechanism 22, the first contact 27 is disposed between the second contact 28 and the elastic member 26, the test button 29 is located on one side of the leakage operation mechanism 22 and above the second contact 262, the length of the second contact 262 is greater than that of the fourth contact arm 261d of the first contact 261, one end of the second contact 262 close to the spiral portion 263 is matched with the test button 29, the other end of the second contact 262 passes through one side of the first contact 27 and extends above the second contact 28, and a test resistor 251 connected with the first contact 27 is disposed below the first contact 27 and the elastic member 26.
Referring to fig. 6, a preferred embodiment of the first contact member 27 is shown, the first contact member 27 includes a first conductive plate 271 disposed along the axial direction of the screw 263, the elastic member 26 is disposed at intervals from the partition 32 along the axial direction, one end of the first conductive plate 271 is connected to the partition 32, and the other end of the first conductive plate 271 is disposed in suspension along the axial direction of the screw 263 to one side of the protection lever 221. The first conductive plate 271 is configured such that one end of the hanging portion is engaged with the protection lever 221 and the first contact portion 261, and thus the first conductive plate is elastically buffered by itself when contacting the first contact portion 261, thereby preventing the case from being damaged due to hard contact.
Further, the first contact member 27 further includes a second conductive plate 272, the length direction of the second conductive plate 272 is perpendicular to the first conductive plate 271, one end of the second conductive plate 272 is opposite to one end of the first conductive plate 271, one end of the second conductive plate 272 is connected with a side edge of one side of the first conductive plate 271 through a third conductive plate 273 to form a first mounting portion of a U-shaped structure, a first mounting groove 270 connected with the first mounting portion is formed in the partition plate 32, the other end of the second conductive plate 272 extends out of the first mounting groove 270, the second conductive plate 272 not only can be used for facilitating reliable connection of the first contact member 27 and the housing through forming a U-shaped structure, but also can be used for facilitating grasping of the first contact member 27 and playing a foolproof role in assembly, and can effectively reduce assembly difficulty.
Further, the side of the first conductive plate 271 near the elastic member 26 is connected to the fourth conductive plate 274, the third conductive plate 273 is connected to the side of the first conductive plate 271 far from the elastic member 26 so that the opening of the U-shaped first mounting portion faces the elastic member 26, a test resistor 251 is disposed between the elastic member 26 and the first conductive plate 271 on the side far from the second conductive plate 272, one end of the fourth conductive plate 274 is vertically connected to the side of the opening of the first mounting portion, and the other end of the fourth conductive plate 274 extends toward the test resistor 251 and is provided with a connection hole 275 for connecting the test resistor 251 to the fourth conductive plate 274. The first contact 27 is provided with the first mounting portion opening toward the test resistor 251 on the elastic portion 26 side, and the fourth conductive plate 274 extending toward the test resistor 251 is provided on the first mounting portion opening side, so that not only can the structure of the first conductive plate 271 be compact, the occupied space volume be reduced, but also connection to the test resistor 251 by means of soldering or the like can be facilitated. In addition, the lead wire at one end of the test resistor 251 can first pass through the connecting hole 275 to form an interlocking with the fourth conductive plate 274 and then be connected with the fourth conductive plate 274, so that the connection strength can be improved, and the connection difficulty can be reduced. Preferably, the two ends of the test resistor 251 are respectively provided with a resistor fixing plate 252, and the two resistor fixing plates 252 are respectively provided with avoidance holes for avoiding leads at the two ends of the test resistor 251. Of course, the test resistor 251 may not be provided, and the opening of the U-shaped first mounting portion may also face to the side away from the elastic member 26, which falls within the protection scope of the present invention.
Referring to fig. 3, a preferred embodiment of the second contact member 28 is shown, the spacer 32 is provided with a second mounting boss 280 disposed along the axial direction of the spiral portion 263, the second contact member 28 includes a first conductive wire 281 formed in a U shape and inversely fastened to the second mounting boss 280, one end of the first conductive wire 281 is located at the top side of the second mounting boss 280 and is matched with the second contact portion 262, and the other end of the first conductive wire 281 is located at the bottom side of the second mounting boss 280 and is connected to the main circuit conductive member through the second conductive wire 282.
Referring to fig. 7, a first embodiment of the test button 29 is shown, the test button 29 includes a button connection portion 291, a button operation portion 292 and a button pushing portion 293 respectively disposed at both ends of the button connection portion 291, the other end of the button operation portion 292 extends out of the housing, the other end of the button pushing portion 293 is matched with the first contact portion 261, the button pushing portion 293 is disposed at a distance from the partition 32, a button guide plate 294 (fig. 4) extending toward the button pushing portion 293 is disposed on the partition 32, and a button guide groove 295 slidably matched with the button guide plate 294 is disposed on a side surface of the button pushing portion 293, so that the test button 29 is guided by the button guide plate 294, thereby enabling smoother and more reliable operation of the test button 29.
Further, the button connection portion 291 is provided with a U-shaped button protruding portion 291a, a button avoiding space 291b (fig. 2) is formed between the button protruding portion 291a and a side wall of the housing, the button protruding portion 291a is connected with one end of the top side of the button pushing portion 293, the other end of the top side of the button pushing portion 293 is in spacing fit with the housing, a first button pushing portion 297 and a second button pushing portion 298 extending to two sides of the first contact portion 261 are provided at the bottom side of the button pushing portion 293, and a button pushing groove 299 in spacing fit with the first contact portion 261 is formed between the first button pushing portion 297 and the second button pushing portion 298.
Furthermore, the side surface of the button guide plate 294 is provided with a contact guide groove 296 matched with the first contact portion 261, the first contact portion 261 can slide along the contact guide groove 296 and limit the position of the first contact portion 261 after being reset by the contact guide groove 296 under the pushing of the test button 29 and under the elastic reset by the self, so that the button guide plate 294 can also play a role in guiding the first contact portion 261 when guiding the test button 29, and in addition, the button guide plate 294 can also form the side wall of the spring limit groove 261 e.
Referring to fig. 8-9, a first embodiment of the protection lever 221 is shown, the protection lever 221 is in a fan shape, a protection lever shaft hole 2210 rotatably connected with the housing is provided at the middle part of one side of the protection lever 221, a latch shaft hole 2218 connected with the latch 224 is provided at the middle part of the front side of the protection lever 221, a latch shaft 2217 and a protection lever shaft 2216 are respectively provided at two sides of the latch shaft hole 2218, the latch shaft 2217 is connected with the latch 222, and the protection lever shaft 2216 is connected with the housing; the back of the protection lever 221 is provided with a first lever boss 2214 corresponding to the other side of the protection lever shaft hole 2210, the top angle of the back of the protection lever 221 corresponding to one side of the protection lever shaft hole 2210 is provided with a first pushing boss 2211 extending towards one side of the first contact part 261, the other side of the protection lever shaft hole 2210 opposite to the first pushing boss 2211 is provided with a second lever boss 2215, one side of the first lever boss 2214 far away from the protection lever shaft hole 2210 is provided with a first lever groove 2219, and the first contact part 261 can be ensured to be reliably contacted with the first contact part 27 by pushing the first contact part 261 by arranging the first pushing boss 2211 on the protection lever 221.
The protection lever 221 is provided with a second pushing boss 2212 extending to the side surface at the top angle of the first pushing boss 2211, a pushing step surface 2213 limiting the first contact portion 261 is formed between the second pushing boss 2212 and the first pushing boss 2211, and the pushing step surface 2213 can enable the protection lever 221 to be matched with the first contact portion 261 more reliably, so that the first contact portion 261 and the first pushing boss 2211 are prevented from being misplaced.
Referring to the second embodiment shown in fig. 10-18, the leakage protection electrode 2 includes a zero sequence current transformer 21, a leakage operation mechanism 22, a leakage test mechanism 25, and a neutral electrode static contact 211 and a neutral electrode moving contact 212 which are oppositely disposed in a housing, the neutral electrode moving contact 212 is connected with the leakage operation mechanism 22 through a protection driving rod 225, the protection driving rod 225 is hinged with one side of the leakage operation mechanism 22 through a shaft coupling driving rod 220, the other side of the leakage operation mechanism 22 is connected with a breaker handle 31, the shaft coupling driving rod 220 is disposed perpendicular to a swinging plane of the protection driving rod 225, two ends of the shaft coupling driving rod 220 are respectively connected with the protection driving rod 225 and the leakage operation mechanism 22, a first contact 27 is disposed on one side of the shaft coupling driving rod 220, a first contact 261 of the elastic member 26 extends between the shaft coupling driving rod 220 and the first contact 27 to be matched with a middle part of the shaft coupling driving rod 220, and the test button 29 can push the second contact 262 to contact the second contact 28, and the shaft coupling driving rod 220 pushes the first contact 261 to contact the first contact 27 when the breaker is closed.
When the breaker handle 31 rotates to the closing position, the electric leakage operating mechanism 22 drives the protection driving rod 225 to drive the neutral pole fixed contact 211 and the neutral pole movable contact 212 to contact through the coupling driving rod 220, and pushes the first contact part 261 to contact with the first contact piece 27 through the coupling driving rod 220, when the breaker handle 31 rotates to the opening position, the coupling driving rod 220 of the driving shaft is far away from the first contact part 261, and the first contact part 261 resets under the self elastic action and pushes the breaker handle 31 to accelerate to rotate to the opening position. In this embodiment, on the basis of the double-breakpoint test circuit, the first contact portion 261 is driven by the moving axis machine coupling driving rod 220 of the electric leakage operation mechanism 22 to contact with the first contact member 27, so that not only can the test circuit be prevented from being conducted by pressing the test button 29 when the phase pole 1 of the circuit breaker is disconnected, the reliability of the circuit breaker is further improved, but also the elastic member 26 is matched with the moving axis machine coupling driving rod 220, and the action speed of the electric leakage operation mechanism 22 can be further improved.
As a preferred embodiment of the leakage operation mechanism 22, the leakage operation mechanism 22 includes a protection lever 221 pivotally installed in a housing, and a protection trip 222 and a protection latch 224 pivotally installed on the protection lever 221, respectively, and snap-fitted to each other, the protection trip 222 is hinged to one end of a protection link 223, the other end of the protection link 223 is hinged to a breaker handle 31, a protection driving lever 225 is hinged to the protection lever 221 through a coupling driving lever 220 of an axis machine, a neutral electrode moving contact 212 is hinged to the protection driving lever 225, and the neutral electrode moving contact 212 is connected to one end of a return spring 227, the other end of the return spring 227 is connected to the housing, and the breaker handle 31 can swing the neutral electrode moving contact 212 through the protection driving lever 225 when the protection trip 222 and the protection latch 224 are snap-fitted to each other. One end of the coupling driving rod 220 is connected with one end of the protection driving rod 225, the protection lever 221 is provided with a coupling driving rod through hole matched with the other end of the coupling driving rod 220, and the other end of the coupling driving rod 220 passes through the coupling driving rod through hole and extends to the other side of the protection lever 221 to be connected with the limiting piece 226. Of course, other arrangements of the leakage operating mechanism 22 are also possible.
Referring to fig. 11, the closing process is: the handle 31 rotates clockwise, the handle 31 pushes the connecting rod 223, the connecting rod 223 pushes the jump button 222 and the lock catch 224 to drive the protection lever 221 to rotate clockwise, and the protection lever 221 compresses the elastic piece 261 to store energy until the mechanism is closed.
The tripping process is as follows: when overload or leakage current occurs to the circuit, the leakage release 23 pushes the lock catch 224 to release from the trip catch 222 and releases the protection lever 221, and the protection lever 221 can rotate more rapidly in the counterclockwise direction under the action of the return spring and the shrinkage spring 261.
Further, the return spring 227 has one end connected to the neutral pole movable contact 212 and the other end connected to the second contact 28. The second contact 28 acts both as a test loop break point and as a stationary return spring 227. At the same time, the return spring 227 plays a role in both mating with the neutral pole moving contact 212 and electrically connecting the neutral pole moving contact 212 with the second contact 28.
Further, the second contact member 28 is disposed on a side of the neutral moving contact 212 close to the neutral fixed contact 211, the first contact member 27 and the elastic member 26 are disposed on a side of the neutral moving contact 212 far away from the neutral fixed contact 211, the neutral moving contact 212 is connected with the second contact member 28 through the return spring 227, the second contact portion 262 penetrates through a side of the neutral moving contact 212 to be matched with the second contact member 28, the first contact member 27 is connected with the test resistor 251 disposed below the first contact member 27, and the first contact member 27 and the second contact member 28 are disposed on two sides of the neutral fixed contact 211 respectively, so that the device has the characteristics of compact structure, short moving stroke and high action speed, and the second contact member 28 plays a role of resetting the neutral moving contact 212 by being connected with the return spring 227 on the basis of conducting a test loop, so that the device is of a second stone and ingenious design.
Referring to fig. 12-16, a preferred embodiment of the protection driving rod 225 is shown, one end of the protection driving rod 225 is provided with an axial machine coupling driving boss 2251 axially arranged along the axial machine coupling driving rod 220, an axial machine coupling driving hole 2252 sleeved on the axial machine coupling driving rod 220 is arranged on the axial machine coupling driving boss 2251, the other end of the protection driving rod 225 is provided with a contact driving boss 2253, the contact driving boss 2253 is provided with a contact driving rod 2254 rotationally connected with the neutral electrode moving contact 212, the contact driving rod 2254 is arranged perpendicular to the swinging plane of the neutral electrode moving contact 212, one end of the protection driving rod 225 is arranged on the protection lever 221 in a lamination manner, and the neutral electrode moving contact 212 is arranged on the other end of the neutral electrode moving contact 212 in a lamination manner. The shaft coupling driving hole 2252 is formed at one end of the protection driving rod 225, and the contact driving rod 2254 is formed at the other end of the protection driving rod 225, so that the structure is simple, the processing and the assembly are convenient, and the strength of the connection between the shaft coupling driving hole 2252 and the shaft coupling driving rod 220 can be improved by the shaft coupling driving boss 2251.
Referring to fig. 15, a second embodiment of the elastic member 26 is shown, the elastic member 26 is a torsion spring, the elastic member 26 includes a spiral portion 263 connected between a first contact portion 261 and a second contact portion 262, the spiral portion 263 is sleeved on the spring shaft 260 and connected with the housing, the first contact portion 261 and the second contact portion 262 are both disposed perpendicular to the axis of the spiral portion 263, the first contact portion 261 extends between the protection lever 221 and the first contact member 27, and the second contact portion 262 extends between the test button 29 and the second contact member 28.
The first contact portion 261 includes a first contact arm 261a, a second contact arm 261b and a third contact arm 261c connected in a U-shape, the first contact arm 261a is disposed opposite to the third contact arm 261c, the second contact arm 261b is vertically connected between the first contact arm 261a and one end of the third contact arm 261c, the other end of the first contact arm 261a is connected with the screw portion 263, the other end of the third contact arm 261c is connected with the fourth contact arm 261d, the fourth contact arm 261d extends between the test button 29 and the second contact piece 28, and the first contact portion 261 is inserted into the spring limit groove 261e along the direction of the second contact arm 261b for limit fit.
Further, the first contact member 27 and the coupling driving rod 220 are disposed on two opposite sides of the elastic member 26, the fourth contact arm 261d of the first contact portion 261 is V-shaped, one end of the fourth contact arm 261d is inclined toward the side close to the coupling driving rod 220, and the other end of the fourth contact arm 261d is inclined toward the side close to the first contact member 27. The distance between the first contact portion 261 and the first contact piece 27 can be effectively reduced by the fourth contact arm 261d which is arranged in the V shape of the first contact portion 261, the speed of the conduction test loop is accelerated, the elasticity is higher, the characteristic of high resetting speed is achieved, and the first contact piece 27 cannot be damaged due to hard contact.
Further, the end of the fourth contact arm 261d is provided with a curved contact arm 261f curved toward the first contact member 27, and the outer side of the curved contact arm 261f is in contact engagement with the first contact member 27, so that the contact area can be increased, and reliable contact can be ensured.
Referring to fig. 12-16, a triangular moving contact guiding slot 213 is provided in the middle of the neutral moving contact 212, a moving contact guiding post 214 is provided in the housing, which is inserted into the moving contact guiding slot 213 and is matched with the moving contact guiding slot 213, one end of a return spring 227 is sleeved in the guiding slot 213, the neutral moving contact 212 is correspondingly provided with a protection driving rod shaft hole and a neutral moving contact 215 on two sides of the moving contact guiding slot 213, and the neutral moving contact 215 is contacted and matched with a neutral stationary contact 216 on the neutral stationary contact 211. The neutral pole moving contact 212 of the embodiment has the characteristics of small volume, simple structure and convenience in processing and manufacturing, and can reduce the production cost and the assembly difficulty.
Further, the neutral moving contact 212 is V-shaped, the middle part of the neutral moving contact 212 protrudes towards one side close to the second contact 28, an opening 217 for avoiding the first contact 27 is formed at the other side of the neutral moving contact 212, the neutral moving contact 215 and the protection driving rod shaft hole are respectively arranged at two ends of the V-shaped neutral moving contact 212, and a test resistor 251 connected with the first contact 27 is arranged at one side of the neutral moving contact 212, so that mutual interference between parts can be avoided, the structure of the test mechanism is further compact, and occupied space is reduced.
Referring to fig. 11 and 17, a second embodiment of the test button 29 is shown, the test button 29 includes a button connection portion 291, a button operation portion 292 and a button pushing portion 293 respectively disposed at two ends of the button connection portion 291, the other end of the button operation portion 292 extends out of the housing, the other end of the button pushing portion 293 is engaged with the first contact portion 261, the button connection portion 291 is connected with one end of the top side of the button pushing portion 293, the other end of the top side of the button pushing portion 293 is engaged with the housing in a limited manner, a first button pushing portion 297 and a second button pushing portion 298 respectively extending to two sides of the first contact portion 261 are disposed at the bottom side of the button pushing portion 293, and a button pushing groove 299 engaged with the first contact portion 261 in a limited manner is formed between the first button pushing portion 297 and the second button pushing portion 298.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments disclosed herein. It should be understood that those skilled in the art to which the present invention pertains may make several simple deductions or substitutions without departing from the inventive concept, and should be considered as falling within the scope of the present invention.
Claims (11)
1. The utility model provides a circuit breaker, includes casing and sets up circuit breaker looks utmost point (1) and leakage protection utmost point (2) in the casing both sides side by side, its characterized in that: the leakage protection electrode (2) comprises a zero sequence current transformer (21), a leakage operation mechanism (22) and a leakage test mechanism (25), and a main loop of the phase electrode (1) of the circuit breaker passes through the zero sequence current transformer (21); the electric leakage testing mechanism (25) comprises an elastic piece (26), a testing button (29) and a first contact piece (27) and a second contact piece (28) which are respectively connected to two ends of the testing loop, one end of the elastic piece (26) is provided with a first contact part (261) matched with the operating mechanism (14), the other end of the elastic piece (26) is provided with a second contact part (262) matched with the testing button (29), the electric leakage operating mechanism (22) can push the first contact part (261) to be contacted with the first contact piece (27) when the circuit breaker is closed, and the testing button (29) can push the second contact part (262) to be contacted with the second contact piece (28);
the electric leakage operating mechanism (22) comprises a protection lever (221) which is pivotally arranged in a shell, and a protection jump buckle (222) and a protection lock catch (224) which are respectively pivotally arranged on the protection lever (221) and are in snap fit with each other, wherein the protection jump buckle (222) is hinged with one end of a protection connecting rod (223), the other end of the protection connecting rod (223) is hinged with a breaker handle (31), one end of the protection lock catch (224) is correspondingly arranged with the electric leakage release (23), a first contact piece (27) is arranged on one side of the protection lever (221), a first contact part (261) of an elastic piece (26) stretches to be matched with the protection lever (221), and the elastic piece (26) drives the protection lever (221) to rotate faster during release.
2. The circuit breaker according to claim 1, characterized in that: the elastic piece (26) is a torsion spring, the elastic piece (26) comprises a spiral part (263) connected between a first contact part (261) and a second contact part (262), the spiral part (263) is arranged on a spring shaft (260) of the shell, the first contact part (261) and the second contact part (262) are perpendicular to the axis of the spiral part (263), the first contact part (261) extends between the protection lever (221) and the first contact piece (27), and the second contact part (262) extends between the test button (29) and the second contact piece (28).
3. The circuit breaker according to claim 2, characterized in that: the first contact (27) and the second contact (28) are arranged below the electric leakage operation mechanism (22), the first contact (27) is arranged between the second contact (28) and the elastic piece (26), the test button (29) is arranged on one side of the electric leakage operation mechanism (22) and above the second contact (262), the length of the second contact (262) is larger than that of the first contact (261), one end, close to the spiral part (263), of the second contact (262) is matched with the test button (29), the other end of the second contact (262) penetrates through one side of the first contact (27) and extends to the upper side of the second contact (28), and a test resistor (251) connected with the first contact (27) is arranged below the space between the first contact (27) and the elastic piece (26).
4. The circuit breaker according to claim 1, characterized in that: the back of the protection lever (221) is provided with a first pushing boss (2211) extending to one side of the first contact part (261), the side edge of the protection lever (221) is provided with a second pushing boss (2212) extending to the side face, and a pushing step surface (2213) limiting the first contact part (261) is formed between the second pushing boss (2212) and the first pushing boss (2211).
5. The circuit breaker according to claim 2, characterized in that: the first contact piece (27) comprises a first conductive plate (271) arranged along the axis direction of the spiral part (263), the elastic piece (26) is arranged at intervals with a partition plate (32) between the phase pole (1) and the leakage protection pole (2) of the circuit breaker along the axis direction, one end of the first conductive plate (271) is connected with the partition plate (32), and the other end of the first conductive plate (271) is arranged in a suspending mode along the axis of the spiral part (263) and extends to one side of the protection lever (221).
6. The circuit breaker of claim 5, wherein: the first contact (27) further comprises a second conductive plate (272), the length direction of the second conductive plate (272) is perpendicular to the first conductive plate (271), one end of the second conductive plate (272) is opposite to one end of the first conductive plate (271), one end of the second conductive plate (272) is connected with one side edge of one side of the first conductive plate (271) through a third conductive plate (273) to form a first installation part of a U-shaped structure, a first installation groove (270) connected with the first installation part is formed in the partition plate (32), and the other end of the second conductive plate (272) extends out of the first installation groove (270).
7. The circuit breaker of claim 6, wherein: the side edge of the first conductive plate (271) close to one side of the elastic piece (26) is connected with the fourth conductive plate (274), the side edge of the third conductive plate (273) far away from the elastic piece (26) is connected with the side edge of the first conductive plate (271) to enable the opening of the U-shaped first installation part to face the elastic piece (26), a test resistor (251) is arranged between the elastic piece (26) and the first conductive plate (271) on one side far away from the second conductive plate (272), one end of the fourth conductive plate (274) is vertically connected with one side of the opening of the first installation part, and the other end of the fourth conductive plate (274) extends towards the test resistor (251) and is used for being connected with a connecting hole (275) of the test resistor (251) on the fourth conductive plate (274).
8. The circuit breaker according to claim 2, characterized in that: the first contact part (261) comprises a first contact arm (261 a), a second contact arm (261 b) and a third contact arm (261 c) which are connected in a U shape, the first contact arm (261 a) is arranged opposite to the third contact arm (261 c), the second contact arm (261 b) is vertically connected between the first contact arm (261 a) and one end of the third contact arm (261 c), the other end of the first contact arm (261 a) is connected with the spiral part (263), the other end of the third contact arm (261 c) is connected with a fourth contact arm (261 d), the fourth contact arm (261 d) extends between the test button (29) and the second contact piece (28), a spring limit groove (261 e) for limiting the first contact arm (261 a), the second contact arm (261 b) and the third contact arm (261 c) is arranged in the shell, and the first contact part (261) is inserted into the spring limit groove (261 e) along the direction of the second contact arm (261 b) for limit fit; the fourth contact arm (261 d) is disposed substantially parallel to the first contact portion (261), and the first contact arm (261 a), the second contact arm (261 b), and the third contact arm (261 c) are disposed perpendicularly to the first contact portion (261).
9. The circuit breaker according to claim 2, characterized in that: be equipped with baffle (32) between circuit breaker looks utmost point (1) and electric leakage protection utmost point (2), be equipped with on baffle (32) along second installation boss (280) of screw portion (263) axis direction setting, second contact (28) are including becoming U and first conductor wire (281) of back-off on second installation boss (280), the one end of first conductor wire (281) is located the top side and the cooperation of second contact (262) of second installation boss (280), the other end of first conductor wire (281) is located the bottom side of second installation boss (280) and is connected with the main circuit of circuit breaker looks utmost point (1) through second conductor wire (282).
10. A circuit breaker according to claim 3, characterized in that: the test button (29) comprises a button connecting part (291), a button operating part (292) and a button pushing part (293) which are respectively arranged at two ends of the button connecting part (291), wherein the other end of the button operating part (292) extends out of the shell, the other end of the button pushing part (293) is matched with the first contact part (261), the button pushing part (293) is arranged at intervals with the partition plate (32), a button guide plate (294) extending towards the button pushing part (293) is arranged on the partition plate (32), and a button guide groove (295) which is in sliding fit with the button guide plate (294) is arranged on the side surface of the button pushing part (293); the button connecting part (291) is connected with one end of the top side of the button pushing part (293), the other end of the top side of the button pushing part (293) is in limit fit with the shell, a first button pushing part (297) and a second button pushing part (298) which respectively extend to two sides of the first contact part (261) are arranged on the bottom side of the button pushing part (293), and a button pushing groove (299) in limit fit with the first contact part (261) is formed between the first button pushing part (297) and the second button pushing part (298); a contact guide groove (296) which is matched with the first contact part (261) is arranged on the side surface of the button guide plate (294).
11. The circuit breaker of claim 4, wherein: the middle part of one side of the protection lever (221) is provided with a protection lever shaft hole (2210) which is rotationally connected with the shell, the middle part of the front surface of the protection lever (221) is provided with a lock catch shaft hole (2218) which is connected with the lock catch (224), and both sides of the lock catch shaft hole (2218) are correspondingly provided with a jump button shaft (2217) and a protection lever shaft (2216) respectively, the jump button shaft (2217) is connected with the jump button (222), and the protection lever shaft (2216) is connected with the shell; the back of the protection lever (221) is provided with a first lever boss (2214) corresponding to the other side of the protection lever shaft hole (2210), the top angle of the back of the protection lever (221) corresponding to one side of the protection lever shaft hole (2210) is provided with a first pushing boss (2211) extending to one side of the first contact part (261), the other side of the protection lever shaft hole (2210) opposite to the first pushing boss (2211) is provided with a second lever boss (2215), and one side of the first lever boss (2214) far away from the protection lever shaft hole (2210) is provided with a first lever groove (2219).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470300.0A CN109659210B (en) | 2018-11-30 | 2018-11-30 | Circuit breaker |
| PCT/CN2019/122030 WO2020108624A1 (en) | 2018-11-30 | 2019-11-29 | Circuit breaker |
| AU2019386913A AU2019386913B2 (en) | 2018-11-30 | 2019-11-29 | Circuit breaker |
| EP19890761.0A EP3889987A4 (en) | 2018-11-30 | 2019-11-29 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470300.0A CN109659210B (en) | 2018-11-30 | 2018-11-30 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109659210A CN109659210A (en) | 2019-04-19 |
| CN109659210B true CN109659210B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470300.0A Active CN109659210B (en) | 2018-11-30 | 2018-11-30 | Circuit breaker |
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| CN (1) | CN109659210B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108624A1 (en) * | 2018-11-30 | 2020-06-04 | 浙江正泰电器股份有限公司 | Circuit breaker |
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