CN220526849U - Circuit breaker - Google Patents

Abstract

The utility model relates to the field of low-voltage appliances and discloses a circuit breaker, which comprises a shell and a handle module arranged in the shell, wherein the handle module comprises an operating handle and a reset spring arranged on the operating handle, the reset spring comprises a reset rotating structure, a reset connecting structure and a reset mounting structure, wherein the reset connecting structure and the reset mounting structure are respectively connected with two ends of the reset rotating structure, a reset spring groove for accommodating the reset rotating structure and a reset avoidance opening are arranged on the operating handle, a reset mounting hole is arranged on the reset spring groove, the reset mounting structure extends along the rotating axial direction of the operating handle, is inserted into the reset mounting hole to be more reliable in limiting, the reset connecting structure extends along the radial direction of the operating handle, extends out of the outer rotating structure from the reset avoidance opening, can be assembled after being integrated with the reliable handle module, and is more convenient for automatic installation.

Description

Circuit breaker

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a circuit breaker.

Background

Because the circuit breaker needs more parts of assembly to the cooperation structure between spare part is comparatively complicated, handle, reset spring, the energy storage rocking arm in the operating device, and a plurality of parts such as magnetic induction coil, coil former, instantaneous trip move, quiet iron core, trip ejector pin, instantaneous spring all need the manual assembly on line in electromagnetic system, therefore production efficiency is low, and the product uniformity is poor. But simultaneously, because more parts need to be assembled and the matching structure between parts is complex, the existing handle structure and electromagnetic system can not realize automatic production, for example, the reset spring of the operating handle is easy to fall off, the electromagnetic system is difficult to be assembled integrally and automatically, and the production efficiency is seriously affected.

Disclosure of Invention

The utility model aims to overcome at least one defect in the prior art and provides a circuit breaker convenient for automatic assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a circuit breaker, includes the casing and sets up the handle module in the casing, the handle module includes operating handle and sets up the reset spring on operating handle, reset spring includes reset rotating-structure and reset connection structure and the reset mounting structure that are connected with reset rotating-structure both ends respectively, be equipped with on the operating handle and hold reset rotating-structure's reset spring groove and reset dodge the mouth, be equipped with reset mounting hole on the reset spring groove, reset mounting structure inserts reset mounting hole along operating handle's rotation axial extension, reset connection structure along operating handle's radial extension, dodge the mouth from reset and stretch outside the outer rotating-structure.

Preferably, the operating handle includes outer revolution mechanic and sets up the internal rotation structure in outer revolution mechanic, internal rotation structure rotates with the casing and is connected, be equipped with on the outer revolution mechanic and stretch to the outer operating handle of casing, internal rotation structure is equipped with reset spring groove, outer revolution mechanic is equipped with reset dodges the mouth, still be equipped with the energy storage rocking arm on the operating handle, the energy storage rocking arm is including setting up the energy storage revolution mechanic in the inner revolution mechanic to and stretch to the outer energy storage connection structure of outer revolution mechanic, the energy storage connection structure with the energy storage revolution mechanic links to each other.

Preferably, the reset spring is a torsion spring structure, the reset rotating structure is a hollow spiral structure, the reset connecting structure and the reset mounting structure are two elastic arms connected with two ends of the spiral structure, and the extending directions of the two elastic arms are vertical;

the reset avoidance port is provided with a reset limiting surface matched with the reset connecting structure, the reset limiting surface is provided with a reset locking boss, the reset locking boss is provided with a reset locking surface, and the reset locking surface and the reset limiting surface are arranged at an acute angle or at a right angle; a reset blocking part is arranged in the shell and is positioned on a rotating path of the reset connecting structure;

the reset connection structure of the reset spring is matched with the reset limiting surface or the reset blocking part.

Preferably, the internal rotation structure comprises a first through hole, the energy storage rocker arm is rotatably arranged in the first through hole through the energy storage rotation structure, a second through hole is formed in the energy storage rotation structure, the handle module is rotatably connected with a fixed shaft in the shell through the second through hole, an operating mechanism is arranged in the shell, an energy storage blocking part is arranged on a contact support of the operating mechanism, and the energy storage blocking part is positioned on a rotating path of the energy storage connection structure.

Preferably, the energy storage rocker arm is integrally formed and comprises an energy storage rotating structure, an energy storage connecting structure and an energy storage elastic structure which are sequentially connected, wherein the energy storage connecting structure is radially connected with the energy storage rotating structure and extends out of the operating handle, the energy storage elastic structure is a wave-shaped elastic arm, one end of the elastic arm is connected with the energy storage connecting structure, the other end of the elastic arm extends towards the direction of the energy storage rotating structure, and a gap is reserved between the other end of the elastic arm and the energy storage connecting structure and between the other end of the elastic arm and the energy storage rotating structure; the energy storage rotating-structure comprises an energy storage connecting end and an energy storage mounting end, wherein the energy storage connecting end is connected with the energy storage connecting structure, an energy storage limiting boss is arranged on the energy storage mounting end, after the energy storage rotating-structure passes through a first through hole, the energy storage limiting boss and the energy storage connecting structure are respectively in limiting fit with two sides of the first through hole, which are opposite to each other, the energy storage rocker arm comprises an energy storage boss arranged outside the outer rotating-structure, and the energy storage boss is connected with the side face of the energy storage connecting structure.

Preferably, an electromagnetic tripping mechanism is further arranged in the shell, two ends of the driving coil are respectively connected with the conducting plate and the fixed contact to form a coil module, the hollow support and the movable iron core, the fixed iron core, the push rod and the spring which are arranged in the support form an iron core module, a fixed contact mounting structure for fixing the fixed contact and an iron core mounting structure for fixing the support are arranged in the shell, the coil module is arranged in the shell, the conducting plate is connected with the wiring terminal, the fixed contact is fixedly arranged at the fixed contact mounting structure, the iron core module penetrates through the driving coil to be fixedly arranged at the iron core mounting structure, and the iron core module and the driving coil form the electromagnetic tripping mechanism.

Preferably, the driving coil comprises a coil driving part and two coil connecting parts respectively arranged at two ends of the coil driving part, the two coil connecting parts are respectively connected with the conducting plate and the fixed contact, and the coil driving part is provided with an avoidance hole for the bracket to pass through; the support is in including setting up relatively two mounting structure at coil drive portion both ends, iron core mounting structure includes two relative splint, coil drive portion installs between two splint, makes iron core module clamp between two splint.

Preferably, one end of the support is provided with a support plate, one end of the support, which is far away from the support plate, is respectively provided with a static iron core and a push rod, the movable iron core is arranged in the support, the push rod penetrates through the static iron core and is connected with the movable iron core, the movable iron core is connected with the static iron core through a spring, the static iron core comprises an iron core inserting part which is inserted into the support and an iron core blocking part which is connected with the iron core inserting part, the iron core blocking part is positioned outside the support, the support plate and the iron core blocking part respectively form two mounting structures at two ends of the support, and the two clamping plates are respectively used for fixing the support plate and the iron core blocking part in opposite directions.

Preferably, the two clamping plates are respectively provided with a limiting groove, and the limiting grooves on the two clamping plates are respectively used for clamping the movable iron core and the push rod.

Preferably, an operating mechanism is arranged in the shell, a moving contact is arranged on the operating mechanism, the handle module is connected with the operating mechanism through a connecting rod, the handle module can drive the moving contact to contact with and separate from a fixed contact through the operating mechanism, and the moving contact and the fixed contact are respectively connected with two wiring terminals through a double-gold tripping mechanism and an electromagnetic tripping mechanism.

According to the circuit breaker disclosed by the utility model, the reset spring is arranged on the operating handle and integrated into the handle module, the reset mounting hole for inserting the reset mounting structure is formed in the operating handle, the reset mounting structure extends along the rotating axial direction of the operating handle and is inserted into the reset mounting hole to limit the reset spring more reliably, the reset spring is less prone to falling off, the reliable handle module can be integrated and then assembled, and the automatic installation is more convenient.

In addition, the energy storage rocker arm is also installed on the operating handle and integrated into a handle module, the handle module can be assembled into a whole in advance, and then the handle module is installed in the shell, so that the number of parts required to be assembled in the original production line of the circuit breaker is reduced to form a modularized assembly, the production efficiency is greatly improved, and the production period is shortened.

In addition, the driving coil of the electromagnetic tripping mechanism is assembled after being welded with the conducting plate and the fixed contact to form a coil module, the conducting plate is connected with the wiring terminal, and the iron core module is clamped and limited by the two clamping plates on the shell on the basis of limiting the driving coil of the wiring terminal and the fixed contact, so that the electromagnetic tripping mechanism is integrally limited, the electromagnetic tripping mechanism is not required to be installed on the U-shaped magnetic yoke, the magnetic yoke is installed in the shell, the production efficiency is greatly improved, and the production period is shortened.

In addition, be equipped with the spacing groove on two splint respectively, the spacing groove on two splint is used for dodging respectively movable core with the push rod, can make the area of contact between two splint and backup pad and the iron core blocking portion of promotion bigger, and spacing effect is more reliable.

Drawings

Fig. 1 is a schematic structural view of a circuit breaker of the present utility model;

fig. 2 is a schematic view of the handle module of the present utility model assembled into a circuit breaker;

FIG. 3 is a schematic view of the handle module of the present utility model;

FIG. 4 is an exploded view of the handle module of the present utility model;

FIG. 5 is a schematic view of the other side of the handle module of the present utility model;

FIG. 6 is a schematic structural view of an electromagnetic trip mechanism of the present utility model;

FIG. 7 is a schematic view of the structure of the driving coil of the present utility model;

fig. 8 is a schematic structural view of the core module of the present utility model;

fig. 9 is an exploded view of the core module of the present utility model;

in the figure, 1, a shell; 2. a handle module; 3. an operation handle; 4. a return spring; 5. an energy storage rocker arm; 6. an electromagnetic trip mechanism; 10. a fixed shaft; 11. an operating mechanism; 12. a moving contact; 13. a stationary contact; 14. a double-gold trip mechanism; 15. a connection terminal; 16. an arc extinguishing chamber; 17. a connecting rod; 18. a conductive plate; 31. an outer rotating structure; 32. an inner rotating structure; 33. an operation handle; 34. an energy storage avoiding port; 341. a first energy storage surface; 342. a second energy storage surface; 35. resetting the mounting hole; 36. resetting the avoidance port; 361. resetting a limiting surface; 362. resetting the locking boss; 363. resetting the locking surface; 40. a reset blocking portion; 41. resetting the rotating structure; 42. a reset connection structure; 43. resetting the mounting structure; 44. a third through hole; 50. an energy storage barrier; 51. an energy storage rotating structure; 52. an energy storage connection structure; 53. an energy storage elastic structure; 54. an energy storage boss; 511. an energy storage connection end; 512. an energy storage installation end; 321. a first through hole; 513. an energy storage limit boss; 514. a second through hole; 61. a coil driving section; 62. a coil connection part; 63. a bracket; 64. a movable iron core; 66. a support plate; 67. a stationary core; 68. a push rod; 69. a spring; 671. an iron core blocking part; 100. a clamping plate; 101. static contact mounting structure.

Detailed Description

Embodiments of the circuit breaker of the present utility model are further described below with reference to the examples shown in the drawings. The circuit breaker of the present utility model is not limited to the description of the following embodiments.

As shown in fig. 1-4, the circuit breaker of this embodiment, including casing 1 and handle module 2 of setting in casing 1, handle module 2 includes operating handle 3 and sets up reset spring 4 on operating handle 3, reset spring 4 includes reset rotary structure 41 and reset connection structure 42 and reset mounting structure 43 that are connected with reset rotary structure 41 both ends respectively, be equipped with the reset spring groove and reset dodge mouth 36 that hold reset rotary structure 41 on operating handle 3, be equipped with reset mounting hole 35 on the reset spring groove, reset mounting structure 43 inserts reset mounting hole 35 along the rotation axial extension of operating handle 3, reset connection structure 42 extends along the radial of operating handle 3 outside from reset dodge mouth 36 to outside rotating structure 31, reset mounting structure 43 and reset connection structure 42 of reset spring of handle module 2 of this embodiment set up along the rotation axial and the radial of operating handle 3 respectively, reset mounting structure 43 inserts reset mounting hole 35 to reset spring spacing more reliably along the rotation axial extension of operating handle 3, and reset spring is more difficult to drop, can integrate the automatic convenient installation of the module of assembling again after the more reliable handle.

As shown in fig. 1 to 5, the handle module 2 of the present embodiment includes an operation handle 3, and a return spring 4 and an energy storage rocker arm 5 respectively disposed on the operation handle 3, the operation handle 3 includes an outer rotating structure 31 and an inner rotating structure 32 disposed in the outer rotating structure 31, the inner rotating structure 32 is rotatably connected with the housing 1, the outer rotating structure 31 is provided with an operation handle 33 extending out of the housing 1, the return spring 4 and the energy storage rocker arm 5 respectively include a return rotating structure 41 and an energy storage rotating structure 51 disposed in the outer rotating structure 31, and a return connecting structure 42 and an energy storage connecting structure 52 respectively extending out of the outer rotating structure 31, the return connecting structure 42 and the energy storage connecting structure 52 are respectively connected with the return rotating structure 41 and the energy storage rotating structure 51, a return blocking portion 40 is disposed in the housing 1, the operation mechanism 11 is provided with an energy storage blocking portion 50, and the return blocking portion 40 and the energy storage blocking portion 50 are respectively located on paths of the return connecting structure 42 and the energy storage connecting structure 52.

The circuit breaker of this embodiment, operating handle 3 are equipped with outer rotating-structure 31, through setting up reset rotating-structure 41 with reset spring 4 to and the energy storage rotating-structure 51 of energy storage rocking arm 5 respectively in outer rotating-structure 31 to set up reset connection structure 42 and energy storage connection structure 52 that stretch to outer rotating-structure 31 outside respectively, make operating handle 3, reset spring 4 and energy storage rocking arm 5 integrate into a handle module 2, handle module 2 can preassemble as an organic wholely, install handle module 2 in casing 1 again, improved production efficiency greatly, shortened production cycle. Of course, as other embodiments, the handle module 2 may integrate only the operating handle 3 and the return spring 4, or the return spring 4 and the storage rocker 5.

As shown in fig. 1-2 and 6-9, the circuit breaker of the embodiment further comprises an electromagnetic tripping mechanism 6, wherein the casing 1 is arranged in the casing 1, two ends of a driving coil are respectively connected with a conducting plate 18 and a fixed contact 13 to form a coil module, a hollow bracket 63, a movable iron core 64 arranged in the bracket 63, a fixed iron core 67, a push rod 68 and a spring 69 form an iron core module, a fixed contact mounting structure 101 for fixing the fixed contact 13 and an iron core mounting structure for fixing the bracket 63 are arranged in the casing 1, the coil module is arranged in the casing 1, the conducting plate 18 is connected with a wiring terminal 15, the fixed contact 13 is fixedly arranged at the fixed contact mounting structure 101, the iron core module passes through the driving coil to be fixedly arranged at the iron core mounting structure, and the iron core module and the driving coil form the electromagnetic tripping mechanism 6.

According to the circuit breaker of the embodiment, the driving coil and the iron core module of the electromagnetic tripping mechanism 6 are fixedly installed respectively, the driving coil and the conducting plate 18 are assembled after being welded together to form the coil module, the conducting plate 18 is connected with the connecting terminal 15, the iron core module is limited and fixed through the iron core installation structure on the basis of limiting the driving coil through the connecting terminal 15 and the fixed contact 13, the electromagnetic tripping mechanism 6 is further limited integrally, the electromagnetic tripping mechanism 6 is not required to be installed on a U-shaped magnetic yoke, the magnetic yoke is installed in the shell 1, the positioning structure of the driving coil is not required to be arranged, the production efficiency is greatly improved, and the production period is shortened.

As shown in fig. 1-2, in the specific structure of the circuit breaker of this embodiment, an operating mechanism 11 is disposed in a casing 1 of the circuit breaker, a moving contact 12 is disposed on the operating mechanism 11, the handle module 2 is connected with the operating mechanism 11 through a connecting rod 17, the handle module 2 can drive the moving contact 12 to contact and separate from a fixed contact 13 through the operating mechanism 11, the moving contact 12 and the fixed contact 13 are respectively connected with two connection terminals 15 through a double-gold tripping mechanism 14 and an electromagnetic tripping mechanism 6, the two groups of connection terminals 15 are respectively used for connecting wires of a main circuit, the double-gold tripping mechanism 14 and the electromagnetic tripping mechanism 6 are respectively used for triggering the operating mechanism 11 to trip when current in the main circuit meets overload fault conditions and short circuit fault conditions, so that the operating mechanism 11 drives the moving contact 12 to separate from the fixed contact 13, and then disconnect the main circuit, an arc extinguishing chamber 16 is disposed below the moving contact 12 and the fixed contact 13, and the arc extinguishing chamber 16 is used for cutting and extinguishing arcs generated on the moving contact 12 and the fixed contact 13.

In particular, the handle module 2 of the circuit breaker of the embodiment is an integrated module of the operating handle 3, the return spring 4 and the energy storage rocker arm 5, and is assembled into the shell 1; the driving coil and the fixed contact 13 of the electromagnetic tripping mechanism 6 and the coil module integrally assembled by welding the conducting plate 18 are integrally assembled into the shell 1, the coil module is fixed through a wiring terminal 15 and a fixed contact mounting structure 101, the bracket 63, the movable iron core 64, the fixed iron core 67, the push rod 68 and the spring 69 of the electromagnetic tripping mechanism 6 form an integrally assembled iron core module, the integrally assembled iron core module is integrally assembled into the shell 1, the electromagnetic tripping mechanism 6 is not required to be mounted on a U-shaped magnetic yoke, the magnetic yoke is required to be mounted in the shell 1, the positioning structure of the driving coil is not required to be arranged, and 7 parts required to be assembled in the original production line of the circuit breaker are reduced to form 3 modularized assemblies, so that the production efficiency is greatly improved, and the production period is shortened.

Specifically, as shown in fig. 4, the return connection structure 42 and the return mounting structure 43 of the return spring 4 are orthogonally arranged, and the return connection structure 42 and the return mounting structure 43 are perpendicular to each other, but may be not completely perpendicular, and may be formed at other angles. The reset spring 4 is a torsion spring structure, the reset rotating structure 41 is a hollow spiral structure, the reset connecting structure 42 and the reset mounting structure 43 are two elastic arms connected with two ends of the spiral structure, the extending directions of the two elastic arms are vertical, the inner rotating structure 32 is provided with a reset spring groove for accommodating the reset rotating structure 41 and a reset mounting hole 35 for inserting the reset mounting structure 43, the outer rotating structure 31 is provided with a reset avoidance opening 36, the reset rotating structure 41 is provided with a third through hole 44 for avoiding an energy storage mounting end 512 of the energy storage rotating structure 51, and the reset rotating structure 41 is mounted in the reset spring groove. The first through hole 321 and the third through hole 44 for the energy storage rocker arm 5 to pass through are respectively arranged on the operating handle 3 and the return spring 4, and the energy storage rocker arm 5, the operating handle 3 and the return spring 4 are integrated into a whole in a limited space, so that the energy storage rocker arm has the characteristics of compact structure and small volume.

Further, the reset avoidance port 36 is provided with a reset limiting surface 361, the reset rotating structure 41 is used for driving the reset connecting structure 42 to rotate close to the reset limiting surface 361, so that the reset connecting structure 42 contacts with the reset limiting surface 361 or the reset blocking portion 40 on the shell 1, a reset locking boss 362 is arranged on the reset limiting surface 361, a reset locking surface 363 is arranged on the reset locking boss 362, and the reset locking surface 363 and the reset limiting surface 361 are arranged at an acute angle or at a right angle, so that the reset connecting structure 42 is reliably limited on the reset limiting surface 361 and is not separated.

The energy storage rocker arm 5 comprises an energy storage rotating structure 51, an energy storage connecting structure 52 and an energy storage elastic structure 53 which are sequentially connected, the energy storage rocker arm 5 is installed in the first through hole 321 in a rotating mode through the energy storage rotating structure 51, the energy storage connecting structure 52 is used for limiting the moving contact 12 in the initial stage of closing operation, and the energy storage elastic structure 53 is used for resetting the energy storage rocker arm 5. The energy storage rocker arm 5 integrated into one piece, the energy storage rotating structure 51 becomes the cylinder, rotates and installs in the first through-hole 321 of inner rotating structure 32, and the radial connection of energy storage connection structure 52 and energy storage rotating structure 51 just extends outside the operating handle 3, energy storage elastic structure 53 is the elasticity arm of wave-shaped, and elasticity arm one end is connected and the other end extends to the direction of energy storage rotating structure 51 with energy storage connection structure 52, has the clearance between the other end of elasticity arm and energy storage connection structure 52 and the energy storage rotating structure 51.

The energy storage rotating structure 51 comprises an energy storage connecting end 511 and an energy storage mounting end 512, the energy storage connecting end 511 is connected with the energy storage connecting structure 52, a first through hole 321 used for allowing the energy storage rotating structure 51 to pass through is formed in the inner rotating structure 32, an energy storage limiting boss 513 is arranged on the energy storage mounting end 512, and after the energy storage rotating structure 51 passes through the first through hole 321, the energy storage limiting boss 513 and the energy storage connecting structure 52 are respectively in limiting fit with two sides opposite to the first through hole 321.

Preferably, two energy storage limiting bosses 513 are disposed on the energy storage mounting end 512, and the two energy storage limiting bosses 513 are disposed on two sides of the energy storage mounting end 512 along the radial direction of the energy storage rotating structure 51.

As shown in fig. 2-5, the energy storage rotating structure 51 is provided with a second through hole 514 rotatably connected with the housing 1, the housing 1 is provided with a fixed shaft 10, the second through hole 514 is used for sleeving the fixed shaft 10, so that the energy storage rotating structure 51 is rotatably connected with the fixed shaft 10, and the operating handle 3 is indirectly rotatably connected with the housing 1 through the energy storage rotating structure 51. The operating handle 3 is not required to be separately connected with the shell 1 in a rotating way, but is connected with the shell 1 in a rotating way through the energy storage rotating structure 51 of the energy storage rocker arm 5, so that the operating handle has the characteristic of convenient installation, and the structure of the handle module 2 can be simplified.

Further, the outer rotating structure 31 is provided with an energy storage avoiding port 34, the energy storage avoiding port 34 is provided with a first energy storage surface 341 and a second energy storage surface 342 which are opposite, the energy storage connecting structure 52 extends out of the outer rotating structure 31 from between the first energy storage surface 341 and the second energy storage surface 342, the energy storage connecting structure 52 is provided with an energy storage elastic structure 53, after the energy storage connecting structure 52 rotates to be in contact with the energy storage blocking portion 50, the energy storage connecting structure 52 continues to rotate to drive the energy storage elastic structure 53 to store energy, and after the energy storage connecting structure 52 is separated from the energy storage blocking portion 50, the energy storage elastic structure 53 releases energy to enable the energy storage rocker arm 5 to rotate and reset.

As shown in fig. 5, the energy storage rocker arm 5 further includes an energy storage boss 54 disposed outside the outer rotating structure 31, the energy storage boss 54 is connected with a side surface of the energy storage connecting structure 52, and the energy storage boss 54 is used for contacting with the energy storage blocking portion 50, so that the contact area of the energy storage rocker arm 5 is larger than that of the energy storage elastic structure 53, and the structural strength of the energy storage rocker arm can be increased.

As shown in fig. 6 to 9, the electromagnetic trip mechanism 6 of the present embodiment includes a driving coil and an iron core module, the driving coil includes a coil driving portion 61, and two coil connecting portions 62 respectively provided at both ends of the coil driving portion 61, the driving coil is respectively connected with the conductive plate 18 and the stationary contact 13 through the two coil connecting portions 62 to form a coil module, the iron core module includes a hollow bracket 63, and a movable iron core 64 movably provided in the bracket 63, the coil driving portion 61 is provided with a dodging hole for the bracket 63 to pass through, the bracket 63 includes two mounting structures oppositely provided at both ends of the coil driving portion 61, an iron core mounting structure is provided in the housing 1, the iron core mounting structure includes two opposite clamping plates 100, the coil driving portion 61 can be inserted between the two clamping plates 100, so that the two clamping plates 100 respectively push the two mounting structures in opposite directions, and the iron core module is clamped between the two clamping plates 100.

Further, a support plate 66 is disposed at one end of the support 63, a static iron core 67 and a push rod 68 are disposed at one end of the support 63 far away from the support plate 66, the movable iron core 64 is movably disposed in the support 63, the push rod 68 penetrates through the static iron core 67 to be connected with the movable iron core 64, the movable iron core 64 is connected with the static iron core 67 through a spring 69, the static iron core 67 comprises an iron core inserting portion for being inserted into the support 63 and an iron core blocking portion 671 connected with the iron core inserting portion, the iron core blocking portion 671 is located on the outer side of the support 63, the support plate 66 and the iron core blocking portion 671 respectively form two mounting structures at two ends of the support 63, and the two clamping plates 100 are respectively used for fixing the support plate 66 and the iron core blocking portion 671 in opposite directions, so that the support 63 is clamped between the two clamping plates 100.

Further, the two clamping plates 100 are respectively provided with a limiting groove, the limiting grooves on the two clamping plates 100 are respectively used for avoiding the movable iron core 64 and the push rod 68, so that the contact area between the two clamping plates 100 and the pushed supporting plate 66 and the iron core blocking part 671 is larger, and the limiting effect is more reliable.

As shown in fig. 3 to 5, the handle module 2 includes an operating handle 3, and a return spring 4 and a storage rocker arm 5 respectively provided on the operating handle 3. The operating handle 3 comprises an outer rotating structure 31 formed by a cylindrical rotating shaft part, an operating handle 33 is arranged on the outer periphery of the outer rotating structure 31 in a protruding mode outwards in the radial direction, an inner rotating structure 32 formed by a corresponding hole structure and a corresponding groove structure is arranged on the outer rotating structure 31 in the axial direction, and the reset spring 4 and the energy storage rocker arm 5 are respectively installed in the inner rotating structure 32 from two sides of the outer rotating structure 31 in the axial direction. As shown in fig. 4, the inner rotating structure 32 includes a first through hole 321, and the energy storage rocker arm 5 is rotatably installed in the first through hole 321 by the energy storage rotating structure 51. The energy storage rotating structure 51 is provided with a second through hole 514, and the handle module 2 is indirectly and rotatably connected with the shell 1 through the second through hole 514.

The operating mechanism 11 comprises an operating support plate, and a lock catch and a jump button which are rotatably arranged on the operating support plate, wherein the lock catch is in snap fit with the jump button, the operating handle 3 is connected with the jump button through a connecting rod 17, the moving contact 12 is rotatably arranged on the operating support plate through a contact support, a contact spring is arranged between the contact support and the operating support plate, the double-gold tripping mechanism 14 and the electromagnetic tripping mechanism 6 release the snap fit relationship between the lock catch and the jump button by pushing the lock catch, so that the operating mechanism 11 trips, and one end, close to the handle module 2, of the contact support is provided with the energy storage blocking part 50. When the handle module 2 drives the breaker to be switched on through the operating mechanism 11, the operating handle 3 drives the operating support plate to rotate through the connecting rod 17 at the initial stage, meanwhile, the energy storage connecting structure 52 of the energy storage rocker arm 5 is in sliding fit with the contact support, rotation supported by the contact is limited, the contact spring stores energy and simultaneously compresses the energy storage elastic structure 53, after the contact support is separated from the energy storage connecting structure 52, the moving contact 12 can be rapidly rotated to be switched on, and the energy storage elastic structure 53 also enables the energy storage rocker arm 5 to reset.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. Circuit breaker, comprising a housing (1) and a handle module (2) arranged in the housing (1), characterized in that: the handle module (2) comprises an operating handle (3) and a reset spring (4) arranged on the operating handle (3), the reset spring (4) comprises a reset rotating structure (41) and a reset connecting structure (42) and a reset mounting structure (43) which are respectively connected with two ends of the reset rotating structure (41), the operating handle (3) is provided with a reset spring groove for accommodating the reset rotating structure (41) and a reset avoidance opening (36), the reset spring groove is provided with a reset mounting hole (35), the reset mounting structure (43) is inserted into the reset mounting hole (35) along the rotation axial extension of the operating handle (3), and the reset connecting structure (42) extends along the radial direction of the operating handle (3) and stretches out of the outer rotating structure (31) from the reset avoidance opening (36).

2. The circuit breaker according to claim 1, characterized in that: the operation handle (3) comprises an outer rotating structure (31) and an inner rotating structure (32) arranged in the outer rotating structure (31), the inner rotating structure (32) is rotationally connected with the shell (1), an operation handle (33) extending out of the shell (1) is arranged on the outer rotating structure (31), the inner rotating structure (32) is provided with a reset spring groove, the outer rotating structure (31) is provided with a reset avoidance opening (36), the operation handle (3) is further provided with an energy storage rocker arm (5), the energy storage rocker arm (5) comprises an energy storage rotating structure (51) arranged in the inner rotating structure (32) and an energy storage connecting structure (52) extending out of the outer rotating structure (31), and the energy storage connecting structure (52) is connected with the energy storage rotating structure (51).

3. The circuit breaker according to claim 1, characterized in that: the reset spring (4) is of a torsion spring structure, the reset rotating structure (41) is of a hollow spiral structure, the reset connecting structure (42) and the reset mounting structure (43) are two elastic arms connected with two ends of the spiral structure, and the extending directions of the two elastic arms are vertical;

the reset avoidance port (36) is provided with a reset limiting surface (361) matched with the reset connecting structure (42), the reset limiting surface (361) is provided with a reset locking boss (362), the reset locking boss (362) is provided with a reset locking surface (363), and the reset locking surface (363) and the reset limiting surface (361) are arranged at an acute angle or a right angle; a reset blocking part (40) is arranged in the shell (1), and the reset blocking part (40) is positioned on a rotating path of the reset connecting structure (42);

the reset connection structure (42) of the reset spring (4) is matched with the reset limiting surface (361) or the reset blocking part (40).

4. The circuit breaker according to claim 2, characterized in that: the internal rotation structure (32) comprises a first through hole (321), the energy storage rocker arm (5) is rotatably arranged in the first through hole (321) through the energy storage rotating structure (51), a second through hole (514) is formed in the energy storage rotating structure (51), the handle module (2) is rotatably connected with a fixed shaft (10) in the shell (1) through the second through hole (514), an operating mechanism is arranged in the shell (1), an energy storage blocking part (50) is arranged on a contact support of the operating mechanism, and the energy storage blocking part (50) is located on a rotating path of the energy storage connecting structure (52).

5. The circuit breaker of claim 4, wherein: the energy storage rocker arm (5) is integrally formed and comprises an energy storage rotating structure (51), an energy storage connecting structure (52) and an energy storage elastic structure (53) which are sequentially connected, wherein the energy storage connecting structure (52) is radially connected with the energy storage rotating structure (51) and extends out of the operating handle (3), the energy storage elastic structure (53) is an elastic arm which is in a wave shape, one end of the elastic arm is connected with the energy storage connecting structure (52) and the other end of the elastic arm extends towards the direction of the energy storage rotating structure (51), and a gap is reserved between the other end of the elastic arm and the energy storage connecting structure (52) and the energy storage rotating structure (51); the energy storage rotating structure (51) comprises an energy storage connecting end (511) and an energy storage mounting end (512), the energy storage connecting end (511) is connected with the energy storage connecting structure (52), an energy storage limiting boss (513) is arranged on the energy storage mounting end (512), after the energy storage rotating structure (51) passes through a first through hole (321), the energy storage limiting boss (513) and the energy storage connecting structure (52) are respectively in limiting fit with two opposite sides of the first through hole (321), the energy storage rocker arm (5) comprises an energy storage boss (54) arranged on the outer side of the outer rotating structure (31), and the energy storage boss (54) is connected with the side face of the energy storage connecting structure (52).

6. The circuit breaker according to claim 1, characterized in that: still be equipped with electromagnetic tripping device (6) in casing (1), coil module is constituteed with conducting plate (18) and stationary contact (13) are connected respectively at drive coil both ends, hollow support (63) and set up moving core (64), stationary core (67), push rod (68) and spring (69) in support (63) constitute the iron core module, be equipped with stationary contact mounting structure (101) that are used for fixed stationary contact (13) in casing (1), and be used for the iron core mounting structure of fixed support (63), coil module installs in casing (1), conducting plate (18) are connected with binding post (15), stationary contact (13) fixed mounting is in stationary contact mounting structure (101) department, the iron core module passes drive coil fixed mounting in iron core mounting structure department, iron core module and drive coil constitute electromagnetic tripping device (6).

7. The circuit breaker of claim 6, wherein: the driving coil comprises a coil driving part (61) and two coil connecting parts (62) respectively arranged at two ends of the coil driving part (61), the two coil connecting parts (62) are respectively connected with the conducting plate (18) and the fixed contact (13), and the coil driving part (61) is provided with an avoidance hole for the bracket (63) to pass through; the bracket (63) comprises two mounting structures which are oppositely arranged at two ends of the coil driving part (61), the iron core mounting structure comprises two opposite clamping plates (100), the coil driving part (61) is arranged between the two clamping plates (100), and the iron core module is clamped between the two clamping plates (100).

8. The circuit breaker of claim 7, wherein: one end of support (63) is equipped with backup pad (66), and one end that backup pad (66) were kept away from to support (63) is equipped with quiet iron core (67) and push rod (68) respectively, moves iron core (64) movable setting in support (63), push rod (68) pass quiet iron core (67) and link to each other with moving iron core (64), move and link to each other through spring (69) between iron core (64) and quiet iron core (67), quiet iron core (67) are including being used for inserting iron core insert part in support (63) to and iron core blocking part (671) that link to each other with iron core insert part, iron core blocking part (671) are located the support (63) outside, backup pad (66) and iron core blocking part (671) constitute respectively two mounting structures at support (63) both ends, two splint (100) are used for fixing respectively in opposite directions backup pad (66) and iron core blocking part (671).

9. The circuit breaker of claim 8, wherein: limiting grooves are respectively arranged on the two clamping plates (100), and the limiting grooves on the two clamping plates (100) are respectively used for clamping the movable iron core (64) and the push rod (68).

10. The circuit breaker according to any one of claims 1-9, characterized in that: be equipped with operating device (11) in casing (1), be equipped with moving contact (12) on operating device (11), handle module (2) are connected with operating device (11) through connecting rod (17), and handle module (2) can drive moving contact (12) and static contact (13) contact and separation through operating device (11), moving contact (12) and static contact (13) are connected with two binding post (15) through bight tripping device (14) and electromagnetism tripping device (6) respectively.