CN213691936U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
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- CN213691936U CN213691936U CN202022395016.0U CN202022395016U CN213691936U CN 213691936 U CN213691936 U CN 213691936U CN 202022395016 U CN202022395016 U CN 202022395016U CN 213691936 U CN213691936 U CN 213691936U
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- rebound
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- circuit breaker
- blocking
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Abstract
The utility model relates to the field of low-voltage apparatus, in particular to a circuit breaker, wherein a side plate component comprises two side plates which are arranged at a relative interval, two ends of a main shaft are respectively matched with the two side plates in a rotating way, a blocking suspension arm component is arranged on the main shaft and rotates synchronously with the main shaft, and two ends of a blocking shaft are respectively arranged on the two side plates; the circuit breaker further comprises an anti-rebound device, the anti-rebound device comprises an anti-rebound plate and an anti-rebound plate resetting piece used for driving the anti-rebound plate to reset, and the anti-rebound plate is pivoted and matched with the stopping suspension arm assembly; when the breaker is opened, the blocking suspension arm assembly rotates towards the opening direction and drives the anti-rebound plate to rotate in the same direction, after the blocking suspension arm assembly impacts the blocking shaft and stops rotating towards the opening direction, the anti-rebound plate continues to rotate towards the opening direction until the anti-rebound plate is in limit fit with the blocking suspension arm assembly, and the blocking suspension arm assembly is prevented from rebounding towards the closing direction; the utility model discloses circuit breaker can effectively prevent contact mechanism's resilience, has improved circuit breaker's breaking capacity.
Description
Technical Field
The utility model relates to a low-voltage apparatus field, concretely relates to circuit breaker.
Background
The speed is very fast and the circuit breaker mechanism all adopts rigid material when the circuit breaker opens the floodgate, therefore when the circuit breaker opens the floodgate, contact mechanism bounce phenomenon is serious, and the sound contact of circuit breaker has very big resilience when arriving final separating brake position (maximum opening distance), and its resilience range can reach half of its maximum opening distance, and when the product divides disconnected heavy current, this kind of resilience can cause electric arc can not extinguish in time or electric arc reignite, seriously influences the breaking capacity of circuit breaker.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a circuit breaker, can effectively prevent contact mechanism's resilience, improved the breaking capacity of circuit breaker.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circuit breaker comprises a side plate assembly 1, a main shaft 2, a blocking suspension arm assembly 3 and a blocking shaft 6, wherein the side plate assembly 1 comprises two side plates which are oppositely arranged at intervals, two ends of the main shaft 2 are respectively in rotating fit with the two side plates, the blocking suspension arm assembly 3 is arranged on the main shaft 2 and rotates synchronously with the main shaft, and two ends of the blocking shaft 6 are respectively arranged on the two side plates; the circuit breaker further comprises an anti-rebound device, the anti-rebound device comprises an anti-rebound plate 4 and an anti-rebound plate resetting piece 5 for driving the anti-rebound plate 4 to reset, and the anti-rebound plate 4 is pivoted and matched with the stopping suspension arm assembly 3; during the circuit breaker separating brake, keep off and stop the cantilever subassembly 3 and rotate and drive and prevent 4 syntropy rotations of rebound board to the separating brake direction, keep off and stop the cantilever subassembly 3 striking and keep off axle 6 and stop to the separating brake direction rotation back, prevent rebound board 4 and continue to rotate to and keep off the spacing cooperation of cantilever subassembly 3 to the separating brake direction, prevent to keep off the cantilever subassembly 3 and kick-back to the combined floodgate direction.
Preferably, the stopping suspension arm assembly 3 comprises a stopping suspension arm 30 arranged on the main shaft 2 and a stopping shaft pin 31 arranged on the stopping suspension arm 30, and the stopping shaft pin 31 is in limit fit with the rebound-preventing plate 4 to prevent the stopping suspension arm assembly 3 from rebounding towards the closing direction.
Preferably, the rebound-prevention plate 4 comprises a rebound-prevention plate driven part 41a and a rebound-prevention plate limiting part 41b which are arranged at one end side by side, and a rebound-prevention plate avoiding groove 41 arranged between the rebound-prevention plate driven part 41a and the rebound-prevention plate limiting part 41 b; when the circuit breaker is opened, the stopping shaft pin 31 drives the rebound-proof plate 4 to rotate through the rebound-proof plate driven part 41 a; the end part of the rebound-prevention plate limiting part 41b is in limiting fit with the stopping shaft pin 31 to prevent the stopping suspension arm assembly 3 from rebounding towards the closing direction.
Preferably, after the circuit breaker completes opening, the blocking and stopping suspension arm assembly 3 is kept at the opening position and is released from the limit fit with the rebound prevention plate limit part 41b, the rebound prevention plate 4 rotates in the closing direction under the action of the rebound prevention plate resetting piece 5, and the rebound prevention plate driven part 41a is in limit fit with the blocking and stopping shaft pin 31 and the blocking and stopping shaft pin 31 is located in the rebound prevention plate avoiding groove 41.
Preferably, one end of the rebound-preventing plate 4 is arranged in a pivoting mode, the other end of the rebound-preventing plate is provided with a rebound-preventing plate buckling surface 42, the stopping shaft pin 31 is in limit fit with the rebound-preventing plate buckling surface 42, and the stopping suspension arm assembly 3 is prevented from rebounding towards the closing direction.
Preferably, the anti-rebound board snapping surface 42 is a circular arc surface with the center coinciding with the rotation center of the anti-rebound board 4.
Preferably, one end of the rebound-prevention plate 4 is pivotally arranged on the stopping shaft 6, the other end of the rebound-prevention plate 4 is in limit fit with the stopping shaft pin 31, and the rebound-prevention plate resetting piece 5 applies force to the rebound-prevention plate 4 to enable the rebound-prevention plate to rotate towards the closing direction.
Preferably, the rebound-prevention plate resetting piece 5 is a torsion spring, is sleeved on the stop shaft 6, and has one end in limit fit with the rebound-prevention plate 4 and the other end in limit fit with the side plate.
Preferably, the distance between the free end of the rebound prevention plate receiving portion 41a and the rotation center of the rebound prevention plate 4 is greater than the distance between the free end of the rebound prevention plate stopper portion 41b and the rotation center of the rebound prevention plate 4.
Preferably, the main shaft 2 and the stop shaft 6 are arranged in parallel at intervals, and the stop suspension arm assembly 3 and the rebound prevention plate 4 are both positioned between the two side plates and between the main shaft 2 and the stop shaft 6.
Preferably, the circuit breaker further comprises a contact driving arm 7 arranged on the main shaft 2, and the contact driving arm 7 is in driving connection with a moving contact of the circuit breaker; the circuit breaker includes that two at least keep off and stop the cantilever subassembly 3 and two sets of at least rebound device, and two keep off and stop the cantilever subassembly 3 and set up respectively in contact actuating arm 7 both sides, cooperate with two sets of rebound device of preventing respectively.
The utility model discloses a circuit breaker, its resilience-preventing device simple structure need not to change the current structure of circuit breaker, can realize preventing backstop stop boom assembly 3 to the function of closing a floodgate direction resilience, is favorable to improving the breaking capacity of circuit breaker simultaneously. Furthermore, the utility model discloses circuit breaker, it prevents that resilient means hinders backstop suspension arm subassembly 3 kick-backs and the circuit breaker accomplishes the separating brake back to closing a floodgate orientation, keeps off and stops pivot 31 and prevent that the spacing portion 41b of rebound board removes spacing cooperation automatically to do not influence the follow-up operation (for example closing a floodgate operation) of circuit breaker.
Drawings
Fig. 1 is a schematic perspective view of the circuit breaker of the present invention;
fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;
fig. 3 is a schematic projection structure diagram of the circuit breaker of the present invention, at least showing that when the circuit breaker starts to open the brake, the stopping suspension arm assembly drives the anti-rebound plate to rotate in the direction of opening the brake;
fig. 4 is a schematic projection structure diagram of the circuit breaker of the present invention, at least showing that when the circuit breaker is opened, the stopping shaft pin is in limit fit with the anti-rebounding plate after the stopping suspension arm assembly strikes the stopping shaft, and the stopping suspension arm assembly is prevented from rebounding in the closing direction;
fig. 5 is a schematic view of a projection structure of the circuit breaker of the present invention, at least showing that the circuit breaker is in a trip state, and the stopping shaft pin is in limit fit with the anti-rebound board driven part and is located in the anti-rebound board avoiding groove;
fig. 6 is a schematic projection structure diagram of the circuit breaker of the present invention, at least showing that when the circuit breaker is closed, the stopping pin of the stopping suspension arm assembly drives the anti-rebounding plate to rotate in the closing direction;
fig. 7 is the utility model discloses the projection structure schematic diagram of circuit breaker shows at least that the circuit breaker is in combined floodgate state, prevents that rebound board receives the portion and keeps off the spacing cooperation of stop pin and be located and prevent that rebound board dodges the inslot.
Detailed Description
The following description will further describe a specific embodiment of the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 7. The circuit breaker of the present invention is not limited to the description of the following embodiments.
The utility model discloses a circuit breaker, it includes curb plate subassembly 1, main shaft 2, keeps off suspension arm subassembly 3 and keeps off axle 6, curb plate subassembly 1 includes two blocks of curb plates that relative interval set up, 2 both ends of main shaft respectively with two blocks of curb plates normal running fit, keep off suspension arm subassembly 3 and set up on main shaft 2 rather than synchronous rotation, keep off axle 6 both ends and set up on two blocks of curb plates respectively; the circuit breaker further comprises an anti-rebound device, the anti-rebound device comprises an anti-rebound plate 4 and an anti-rebound plate resetting piece 5 for driving the anti-rebound plate 4 to reset, and the anti-rebound plate 4 is pivoted and matched with the stopping suspension arm assembly 3; during the circuit breaker opening, keep off stopping cantilever subassembly 3 striking keep off axle 6 and stop to the back of separating brake direction rotation, prevent kick-back plate 4 and continue to rotate to keeping off the spacing cooperation of cantilever subassembly 3 to separating brake direction, prevent to keep off stopping cantilever subassembly 3 and kick-back to the direction of closing a floodgate.
The utility model discloses circuit breaker, its resilience-proof device simple structure need not to change the current structure of circuit breaker, can realize preventing backstop stop boom assembly 3 to the function of combined floodgate direction resilience, is favorable to improving the breaking capacity of circuit breaker simultaneously.
It should be noted that the "rebounding of the blocking arm assembly 3 in the closing direction" refers to the rotation of the blocking arm assembly 3 in the closing direction due to the striking blocking shaft 6 rotating rapidly in the opening direction.
Preferably, as shown in fig. 2 and 4, the blocking suspension arm assembly 3 includes a blocking suspension arm 30 disposed on the main shaft 2 and a blocking shaft pin 31 disposed on the blocking suspension arm 30, and the blocking shaft pin 31 is in limit fit with the anti-rebound plate 4 to prevent the blocking suspension arm assembly 3 from rebounding in the closing direction. Further, as shown in fig. 2, the rebound-prevention plate 4 includes a rebound-prevention-plate driven portion 41a and a rebound-prevention-plate restraining portion 41b which are arranged side by side at one end thereof, and a rebound-prevention-plate escape groove 41 which is arranged between the rebound-prevention-plate driven portion 41a and the rebound-prevention-plate restraining portion 41 b; as shown in fig. 3, when the circuit breaker is opened, the stopping shaft pin 31 drives the anti-rebound board 4 to rotate through the anti-rebound board driven part 41 a; as shown in fig. 4, the end of the rebound preventing plate stopper 41b is engaged with the stopping shaft pin 31 to prevent the stopping arm assembly 3 from rebounding in the closing direction. Further, as shown in fig. 5, after the circuit breaker completes the opening, the suspension arm assembly 3 keeps at the opening position and releases the limit fit with the rebound prevention plate limit portion 41b, the rebound prevention plate 4 rotates in the closing direction under the action of the rebound prevention plate reset piece 5, until the rebound prevention plate driven portion 41a is in limit fit with the stop pin 31 and the stop pin 31 is located in the rebound prevention plate avoiding groove 41. The utility model discloses circuit breaker, it prevents that resilient mounting hinders backstop suspension arm subassembly 3 kick-backs and the circuit breaker accomplishes the separating brake back to closing a floodgate orientation, keeps off and stops pivot 31 and prevent that the spacing portion 41b of rebound board removes spacing cooperation automatically to do not influence the follow-up operation (for example combined floodgate operation) of circuit breaker.
As shown in fig. 1-7, the present invention is an embodiment of a circuit breaker.
As shown in fig. 1 and 2, the circuit breaker of the present invention includes a side plate assembly 1, a main shaft 2, a blocking suspension arm assembly 3, a blocking shaft 6, and an anti-rebound device; the side plate assembly 1 comprises two side plates which are oppositely arranged at intervals, two ends of a main shaft 2 are respectively in rotating fit with the two side plates, a stopping suspension arm assembly 3 is arranged on the main shaft 2 and synchronously rotates with the main shaft, and two ends of a stopping shaft 6 are respectively arranged on the two side plates; the anti-rebound device comprises an anti-rebound plate 4, and one end of the anti-rebound plate 4 is arranged in a pivoting manner; during the circuit breaker separating brake, keep off and stop the cantilever subassembly 3 and rotate and drive and prevent 4 syntropy rotations of rebound board to the separating brake direction, keep off and stop the cantilever subassembly 3 striking and keep off axle 6 and stop to the separating brake direction rotation back, prevent rebound board 4 and continue to rotate to and keep off the spacing cooperation of cantilever subassembly 3 to the separating brake direction, prevent to keep off the cantilever subassembly 3 and kick-back to the combined floodgate direction.
It should be noted that the circuit breaker of the present invention, preferably a circuit breaker with an energy storage operating mechanism, is the intrinsic component of the energy storage operating mechanism of the side plate assembly 1, the main shaft 2, the gear stop shaft 6 and the gear stop suspension arm assembly 3. And the rotation of the main shaft 2 is used for driving a moving contact and a static contact of the circuit breaker to be switched on and off.
Preferably, as shown in fig. 1 to 7, the main shaft 2 is spaced from the stopping shaft 6 in parallel, and the stopping suspension arm assembly 3 and the rebound preventing plate 4 are both located between the two side plates and between the main shaft 2 and the stopping shaft 6. Specifically, as shown in the directions of fig. 1 to 7, the two side plates are arranged in parallel at intervals from left to right, and the main shaft 2 and the stopping shaft 6 are arranged in parallel at intervals from top to bottom.
Preferably, as shown in fig. 1-7, the anti-rebound plate 4 is pivotally mounted at one end to the backstop shaft 6 and at the other end in a positive fit with the backstop suspension arm assembly 3. It should be noted that the anti-rebound board 4 is not limited to be pivotally disposed on the stopping shaft 6, but may be pivotally disposed on the side board assembly 1 or other shaft members.
Preferably, as shown in fig. 1 and 2, the antirebound device further includes an antirebound device 5, and the antirebound device 5 applies a force to the antirebound device 4 to rotate the same in a closing direction. Further, as shown in fig. 1 and 2, the rebound-prevention plate resetting piece 5 is a torsion spring, is sleeved on the stop shaft 6, and has one end in limit fit with the rebound-prevention plate 4 and the other end in limit fit with the side plate. It should be noted that the rebound-prevention plate returning part 5 is not limited to a torsion spring, but may be a tension spring or other types of elastic members as long as the function of returning the rebound-prevention plate 4 is achieved.
Preferably, as shown in fig. 1 to 7, the blocking suspension arm assembly 3 includes a blocking suspension arm 30 disposed on the main shaft 2 and a blocking shaft pin 31 disposed on the blocking suspension arm 30, and the blocking shaft pin 31 is in limit fit with the anti-rebound plate 4 to prevent the blocking suspension arm assembly 3 from rebounding in the closing direction. Further, as shown in fig. 2 and 4, the rebounding-preventing plate 4 includes a rebounding-preventing plate buckling surface 42 disposed at the other end thereof, and the stopping shaft pin 31 is in limit fit with the rebounding-preventing plate buckling surface 42 to prevent the stopping suspension arm assembly 3 from rebounding in the closing direction. Further, the anti-rebound plate buckle surface 42 is an arc surface with the center coinciding with the rotation center of the anti-rebound plate 4.
Preferably, as shown in fig. 2, the rebound-prevention plate 4 includes a rebound-prevention-plate driven portion 41a and a rebound-prevention-plate restraining portion 41b provided side by side at one end thereof, and a rebound-prevention-plate escape groove 41 provided between the rebound-prevention-plate driven portion 41a and the rebound-prevention-plate restraining portion 41 b; when the circuit breaker is opened, the stopping shaft pin 31 drives the rebound-proof plate 4 to rotate through the rebound-proof plate driven part 41 a; the end part of the rebound-prevention plate limiting part 41b is in limiting fit with the stopping shaft pin 31 to prevent the stopping suspension arm assembly 3 from rebounding towards the closing direction. Further, as shown in fig. 5, after the circuit breaker completes the opening, the blocking suspension arm assembly 3 is kept at the opening position and is released from the limit fit with the rebound prevention plate limit portion 41b, and the rebound prevention plate 4 rotates in the closing direction under the action of the rebound prevention plate resetting piece 5 until the rebound prevention plate driven portion 41a is in limit fit with the blocking stop shaft pin 31 and the blocking stop shaft pin 31 is located in the rebound prevention plate avoiding groove 41.
Preferably, as shown in fig. 3 to 7, the distance between the free end of the antirebound device receiving portion 41a and the rotation center of the antirebound device 4 is greater than the distance between the free end of the antirebound device restraining portion 41b and the rotation center of the antirebound device 4.
Preferably, as shown in fig. 1 and 2, the antirebound buckle face 42 is provided on the free end of the antirebound portion 41 b.
Preferably, as shown in fig. 3-7, the blocking suspension arm 30 of the blocking suspension arm assembly 3 includes an opening blocking stop end 300 and a blocking suspension arm driving end 301 respectively disposed at both ends thereof, and the middle of the blocking suspension arm 30 is fixedly connected to the main shaft 2; the utility model discloses during the circuit breaker separating brake, the separating brake keeps off and stops end 300 and keeps off 6 spacing cooperations of axle, and the restriction keeps off the rotation range that suspension arm subassembly 3 is to the separating brake direction. Further, the utility model discloses the circuit breaker still includes the divide-shut brake indicator, keeps off and stops cantilever drive end 301 and divide-shut brake indicator drive cooperation, instructs the separating brake/combined floodgate state of circuit breaker.
The action process of the circuit breaker of the present invention will be described in detail below with reference to the attached drawings of the specification:
as shown in fig. 7, the circuit breaker of the present invention is in a closing state, and the stopping shaft pin 31 of the stopping suspension arm assembly 3 is located in the rebounding-preventing board avoiding groove 41 of the rebounding-preventing board 4 and is in spacing fit with the rebounding-preventing board passive portion 41a, so as to prevent the rebounding-preventing board 4 from excessively rotating under the action of the rebounding-preventing board resetting member 5; as shown in fig. 3, when the circuit breaker of the present invention starts to open, the stopping suspension arm assembly 3 rotates in the opening direction (counterclockwise direction), and the stopping shaft pin 31 drives the rebounding-preventing plate 4 to rotate in the opening direction through the rebounding-preventing plate driven portion 41 a; as shown in fig. 4, after the stopping suspension arm assembly 3 impacts the stopping shaft 6, the anti-rebound plate 4 continues to rotate in the opening direction under the action of inertia, and at the same time, the stopping suspension arm assembly 3 rebounds in the closing direction (clockwise direction) in a small range, and the anti-rebound plate buckle surface 42 of the anti-rebound plate limiting portion 41b of the anti-rebound plate 4 is in limit fit with the stopping shaft pin 31 to prevent the stopping suspension arm assembly 3 from rebounding further in the closing direction; as shown in fig. 5, after the circuit breaker completes the opening operation, the blocking suspension arm assembly 3 is kept at the opening position, the blocking shaft pin 31 and the rebound prevention plate buckle surface 42 are released from the limit fit, and then the rebound prevention plate 4 rotates towards the closing direction under the effect of the rebound prevention plate resetting piece 5 until the rebound prevention plate driven part 41 is in the limit fit with the blocking shaft pin 31, and meanwhile, the blocking shaft pin 31 enters the rebound prevention plate avoidance groove 41 again; as shown in fig. 6, the utility model discloses when the circuit breaker closes a floodgate once more, keep off suspension arm component 3 and rotate to the closing direction, keep off simultaneously that stop pivot 31 prevents rebounding plate 4 and rotate to the closing direction through preventing the spacing portion 41b drive of rebounding plate, the circuit breaker accomplishes the back of closing a floodgate, gets into the state shown in fig. 7.
Preferably, as shown in fig. 1, the circuit breaker of the present invention further includes a contact driving arm 7 disposed on the main shaft 2, wherein the contact driving arm 7 is drivingly connected to a moving contact of the circuit breaker; the circuit breaker includes that two at least fender suspension arm subassemblies 3 stop and at least two sets of resilient mounting that prevent, and two fender suspension arm subassemblies 3 set up respectively in contact actuating arm 7 both sides, respectively with two sets of resilient mounting cooperation of preventing, and two sets of fender suspension arm subassemblies 3 stop and set up in contact actuating arm 7 both sides with the resilient mounting symmetry of preventing, are favorable to improving the utility model discloses the stability and the reliability of circuit breaker action.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (11)
1. A circuit breaker comprises a side plate assembly (1), a main shaft (2), a blocking suspension arm assembly (3) and a blocking shaft (6), wherein the side plate assembly (1) comprises two side plates which are arranged at intervals oppositely, two ends of the main shaft (2) are respectively in running fit with the two side plates, the blocking suspension arm assembly (3) is arranged on the main shaft (2) and rotates synchronously with the main shaft, and two ends of the blocking shaft (6) are respectively arranged on the two side plates; the method is characterized in that: the circuit breaker further comprises an anti-rebound device, the anti-rebound device comprises an anti-rebound plate (4) and an anti-rebound plate reset piece (5) used for driving the anti-rebound plate (4) to reset, and the anti-rebound plate (4) is pivoted and matched with the stopping suspension arm assembly (3); during the circuit breaker separating brake, keep off suspension arm subassembly (3) and rotate and drive anti-rebound board (4) syntropy to the separating brake direction, keep off suspension arm subassembly (3) striking and keep off axle (6) and stop to the separating brake direction rotation back, prevent rebound board (4) and continue to rotate to and keep off suspension arm subassembly (3) spacing cooperation to the separating brake direction, prevent to keep off suspension arm subassembly (3) to kick-back to the combined floodgate direction.
2. The circuit breaker of claim 1, wherein: the blocking and stopping suspension arm assembly (3) comprises a blocking and stopping cantilever (30) arranged on the main shaft (2) and a blocking and stopping shaft pin (31) arranged on the blocking and stopping cantilever (30), the blocking and stopping shaft pin (31) is in limit fit with the rebound prevention plate (4), and the blocking and stopping suspension arm assembly (3) is prevented from rebounding towards the closing direction.
3. The circuit breaker of claim 2, wherein: the rebound-proof plate (4) comprises a rebound-proof plate driven part (41a) and a rebound-proof plate limiting part (41b) which are arranged at one end of the rebound-proof plate side by side, and a rebound-proof plate avoiding groove (41) arranged between the rebound-proof plate driven part (41a) and the rebound-proof plate limiting part (41 b); when the breaker is opened, the stop shaft pin (31) drives the rebound-preventing plate (4) to rotate through the rebound-preventing plate driven part (41 a); the end part of the rebound-prevention plate limiting part (41b) is in limiting fit with the blocking shaft pin (31) to prevent the blocking suspension arm assembly (3) from rebounding towards the closing direction.
4. The circuit breaker of claim 3, wherein: after the circuit breaker finishes opening, the blocking and stopping suspension arm assembly (3) is kept at the opening position and is released from the limit fit of the rebound prevention plate limit part (41b), the rebound prevention plate (4) rotates towards the closing direction under the action of the rebound prevention plate reset piece (5), and the rebound prevention plate driven part (41a) is in limit fit with the blocking and stopping shaft pin (31) and the blocking and stopping shaft pin (31) is located in the rebound prevention plate avoiding groove (41).
5. The circuit breaker according to claim 2 or 3, characterized in that: one end of the rebound prevention plate (4) is arranged in a pivoting mode, the other end of the rebound prevention plate is provided with a rebound prevention plate buckling surface (42), the stop shaft pin (31) is in limit fit with the rebound prevention plate buckling surface (42), and the rebound of the stop suspension arm assembly (3) to the closing direction is prevented.
6. The circuit breaker of claim 5, wherein: the buckling surface (42) of the rebound-preventing plate is an arc surface with the circle center coinciding with the rotation center of the rebound-preventing plate (4).
7. The circuit breaker of claim 2, wherein: one end of the rebound-preventing plate (4) is arranged on the stop shaft (6) in a pivoting mode, the other end of the rebound-preventing plate is in limit fit with the stop shaft pin (31), and the rebound-preventing plate resetting piece (5) applies force for enabling the rebound-preventing plate (4) to rotate towards the closing direction.
8. The circuit breaker of claim 7, wherein: the anti-rebound plate resetting piece (5) is a torsion spring, is sleeved on the stop shaft (6), and is in limit fit with the anti-rebound plate (4) at one end and the side plate at the other end.
9. The circuit breaker of claim 3, wherein: the distance between the free end of the passive part (41a) of the rebound-prevention plate and the rotation center of the rebound-prevention plate (4) is larger than the distance between the free end of the limiting part (41b) of the rebound-prevention plate and the rotation center of the rebound-prevention plate (4).
10. The circuit breaker of claim 1, wherein: the main shaft (2) and the blocking stop shaft (6) are arranged in parallel at intervals, and the blocking stop cantilever assembly (3) and the rebound prevention plate (4) are located between the two side plates and located between the main shaft (2) and the blocking stop shaft (6).
11. The circuit breaker according to claim 1 or 10, characterized in that: the circuit breaker also comprises a contact driving arm (7) arranged on the main shaft (2), and the contact driving arm (7) is connected with a moving contact of the circuit breaker in a driving way; the circuit breaker comprises at least two blocking suspension arm assemblies (3) and at least two sets of rebound prevention devices, wherein the two blocking suspension arm assemblies (3) are respectively arranged on two sides of a contact driving arm (7) and are respectively matched with the two sets of rebound prevention devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395016.0U CN213691936U (en) | 2020-10-23 | 2020-10-23 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395016.0U CN213691936U (en) | 2020-10-23 | 2020-10-23 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213691936U true CN213691936U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022395016.0U Active CN213691936U (en) | 2020-10-23 | 2020-10-23 | Circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN213691936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808869A (en) * | 2021-09-15 | 2021-12-17 | 江苏大全凯帆开关股份有限公司 | Modular installation method |
-
2020
- 2020-10-23 CN CN202022395016.0U patent/CN213691936U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808869A (en) * | 2021-09-15 | 2021-12-17 | 江苏大全凯帆开关股份有限公司 | Modular installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: Shanghai Chint Intelligent Technology Co.,Ltd. Contract record no.: X2021330000592 Denomination of utility model: Circuit breaker Granted publication date: 20210713 License type: Common License Record date: 20211026 |
|
| EE01 | Entry into force of recordation of patent licensing contract |