CN216928453U - Switching type magnetic tripping device for low-current molded case circuit breaker - Google Patents
Switching type magnetic tripping device for low-current molded case circuit breaker Download PDFInfo
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- CN216928453U CN216928453U CN202220431977.9U CN202220431977U CN216928453U CN 216928453 U CN216928453 U CN 216928453U CN 202220431977 U CN202220431977 U CN 202220431977U CN 216928453 U CN216928453 U CN 216928453U
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Abstract
The utility model discloses a switching type magnetic tripping device for a low-current molded case circuit breaker, which comprises a shell, a quick tripping device, a winding tripping device, a switching assembly, an L-shaped connecting plate and a traction rod, wherein the quick tripping device and the winding tripping device are respectively arranged on two sides in the shell, the L-shaped connecting plate is arranged in the shell and positioned beside the winding tripping device, the switching assembly is arranged in the shell and positioned below the L-shaped connecting plate, and the traction rod is arranged between the quick tripping device and the winding tripping device. Compared with the prior art, the utility model can simultaneously realize tripping under large current and small current, does not damage the winding tripper, and can meet the requirements of special industries such as petrochemical industry and the like.
Description
Technical Field
The utility model relates to the technical field of low-voltage electric appliances, in particular to a switching type magnetic tripping device for a low-current molded case circuit breaker.
Background
The plastic case circuit breaker is an important element in a low-voltage electrical apparatus, and the development of an industry can be restricted by the performance indexes of the plastic case circuit breaker. The low-current molded case circuit breaker below 10A is widely applied to special industries such as petrochemical industry and the like, the requirements are special, the circuit is required to be guaranteed to be tripped when the circuit breaker is overloaded with low current (10 In-12 In), the circuit is also guaranteed to be broken when the circuit breaker is subjected to high current (10kA), the two requirements are contradictory, the traditional structure guarantees tripping when the low current is achieved through a coil winding, but the high current inevitably causes irreversible winding damage when passing through the coil winding, and therefore a switching type magnetic tripping mechanism is required to guarantee reliable breaking of the circuit under the two conditions, and the coil winding cannot be damaged when the high current passes through the switching type magnetic tripping mechanism.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention is realized by the following technical solutions:
a switching type magnetic tripping device for a low-current molded case circuit breaker comprises a shell, a quick tripping device, a winding tripping device, a switching assembly, an L-shaped connecting plate and a traction rod, wherein the quick tripping device and the winding tripping device are respectively arranged on two sides in the shell, the L-shaped connecting plate is arranged in the shell and positioned beside the winding tripping device, the switching assembly is arranged in the shell and positioned below the L-shaped connecting plate, and the traction rod is arranged between the quick tripping device and the winding tripping device.
Further, the switching assembly comprises a bottom plate, a spring and a connecting plate.
Further, the bottom plate is arranged in the shell, the connecting plate is arranged on the bottom plate through a spring, and when a small current flows through the connecting plate, the spring pushes the connecting plate out until the connecting plate is in contact with the L-shaped connecting plate, so that the winding release is connected into the system.
Further, an armature is arranged on the quick release.
Further, the armature is arranged on the quick release through a hinge, and the armature can rotate anticlockwise around the hinge under the influence of large current.
Further, a lever is arranged on the winding release.
Further, the lever is arranged above the winding release through a hinge, and the lever can rotate clockwise around the hinge under the driving of the winding release.
Furthermore, the draw bar is arranged in the shell through a hinge, and the draw bar rotates anticlockwise to realize tripping.
Furthermore, both ends of the traction rod are provided with compression rods.
Further, the top end of the pressure rod is provided with a protrusion.
Through the technical scheme, the utility model has the following technical effects:
compared with the prior art, the switching type magnetic tripping device for the low-current molded case circuit breaker can realize tripping at high current and low current simultaneously, does not damage the winding tripper, and can meet the requirements of special industries such as petrochemical industry and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram illustrating a state of the present invention when a small current is overloaded;
fig. 3 is a schematic diagram of the present invention in a state of overloading with a large current.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
A switching type magnetic tripping device for a low-current molded case circuit breaker comprises a shell 1, a quick release 2, a winding release 3, a switching assembly 4, an L-shaped connecting plate 5 and a traction rod 6, wherein the quick release 2 and the winding release 3 are respectively arranged on two sides in the shell 1, the L-shaped connecting plate 5 is arranged in the shell 1 and positioned beside the winding release 3, the switching assembly 4 is arranged in the shell 1 and positioned below the L-shaped connecting plate 5, and the traction rod 6 is arranged between the quick release 2 and the winding release 3. The switching assembly 4 comprises a base plate 41, a spring 42, and a coupling plate 43. The base plate 41 is arranged in the shell 1, the linking plate 43 is arranged on the base plate 31 through the spring 42, and when the linking plate 43 passes through a small current, the spring 42 pushes the linking plate 43 out until the linking plate 43 is contacted with the L-shaped linking plate 5, so that the winding release 3 is connected into the system. An armature 21 is arranged on the quick release 2, and the armature 21 is arranged on the quick release 2 through a hinge. A lever 31 is arranged on the winding release 3, and the lever 31 is arranged above the winding release 3 through a hinge. The traction rod 6 is arranged in the shell 1 through a hinge, two ends of the traction rod 6 are provided with pressure rods 61, and the top ends of the pressure rods 61 are provided with protrusions.
The working principle is as follows:
the core principle is to realize the counterclockwise rotation of the traction rod 6 to realize the tripping.
As shown in fig. 2, in the overload low-current state, since the link plate 43 below the winding release 3 moves upwards under the action of the spring 42 and finally contacts with the L-shaped link plate 5 above, the current can normally flow to the winding release 3, when the overload low current passes, the current is not enough to drive the quick release 3 to act, but the current is amplified by the winding release 3, the lever 31 on the winding release 3 is driven to move, the lever 31 moves clockwise, so that the lever 61 of the traction rod 6 is hit and clamped at the bulge, and the traction rod 6 is driven to move counterclockwise, so that the tripping is realized.
As shown in fig. 3, in a high-current overload state, the armature 21 on the quick release 2 rotates counterclockwise around the hinge under the influence of a high current, so as to push the link plate 43 to move downward, the link plate 43 is separated from the L-shaped link plate 5, and the connection of the winding release 3 in the system is cut off, so as to achieve the purpose of protecting the rear winding release 3, and meanwhile, when the armature 21 rotates counterclockwise, the armature 21 strikes the press rod 61 of the traction rod 6 and is clamped at the protrusion, so as to drive the traction rod 6 to rotate counterclockwise, thereby realizing release.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a switching type magnetism trip gear for undercurrent moulded case circuit breaker which characterized in that: the winding tripper comprises a shell (1), a quick tripper (2), a winding tripper (3), a switching assembly (4), an L-shaped connecting plate (5) and a traction rod (6), wherein the quick tripper (2) and the winding tripper (3) are respectively arranged on two sides in the shell (1), the L-shaped connecting plate (5) is arranged in the shell (1) and positioned beside the winding tripper (3), the switching assembly (4) is arranged in the shell (1) and positioned below the L-shaped connecting plate (5), and the traction rod (6) is arranged between the quick tripper (2) and the winding tripper (3).
2. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 1, wherein: the switching assembly (4) comprises a bottom plate (41), a spring (42) and a connecting plate (43).
3. A switching type magnetic trip device for a small current molded case circuit breaker according to claim 2, characterized in that: the base plate (41) is arranged in the housing (1), and the coupling plate (43) is arranged on the base plate (41) by means of a spring (42).
4. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 1, wherein: an armature (21) is arranged on the quick release (2).
5. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 4, wherein: the armature (21) is arranged on the quick release (2) through a hinge.
6. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 1, wherein: and a lever (31) is arranged on the winding release (3).
7. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 6, characterized in that: the lever (31) is arranged above the winding release (3) through a hinge.
8. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 1, wherein: the traction rod (6) is arranged in the shell (1) through a hinge.
9. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 1, wherein: both ends of the traction rod (6) are provided with compression rods (61).
10. The switching type magnetic trip device for a small current molded case circuit breaker according to claim 9, wherein: the top end of the pressure lever (61) is provided with a bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220431977.9U CN216928453U (en) | 2022-03-01 | 2022-03-01 | Switching type magnetic tripping device for low-current molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220431977.9U CN216928453U (en) | 2022-03-01 | 2022-03-01 | Switching type magnetic tripping device for low-current molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928453U true CN216928453U (en) | 2022-07-08 |
Family
ID=82224117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220431977.9U Active CN216928453U (en) | 2022-03-01 | 2022-03-01 | Switching type magnetic tripping device for low-current molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928453U (en) |
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2022
- 2022-03-01 CN CN202220431977.9U patent/CN216928453U/en active Active
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