CN116978750A - Thermomagnetic tripping module - Google Patents
Thermomagnetic tripping module Download PDFInfo
- Publication number
- CN116978750A CN116978750A CN202311081704.1A CN202311081704A CN116978750A CN 116978750 A CN116978750 A CN 116978750A CN 202311081704 A CN202311081704 A CN 202311081704A CN 116978750 A CN116978750 A CN 116978750A
- Authority
- CN
- China
- Prior art keywords
- armature
- tripping
- magnetic
- circuit breaker
- thermomagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010931 gold Substances 0.000 claims abstract description 17
- 229910052737 gold Inorganic materials 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000004020 conductor Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a thermomagnetic tripping module, and belongs to the technical field of circuit breakers. The magnetic tripping device comprises a first magnetic tripping sleeved on a circuit breaker and a second magnetic tripping fixedly installed on the circuit breaker, wherein the first magnetic tripping is an armature, the second magnetic tripping is a magnetic yoke, the armature corresponds to the magnetic yoke, the armature is sleeved on a thermal tripping, the thermal tripping is double-gold, an adjusting bolt is arranged at the top of the double-gold, and the adjusting bolt corresponds to a traction rod arranged on an operation structure of the circuit breaker. Compared with the traditional thermomagnetic tripping module of the double-breakpoint molded case circuit breaker, the thermomagnetic tripping module has the advantages that the whole structure is simpler, the tripping speed is accelerated, and only double-gold, the armature iron, the magnetic yoke and the traction rod are arranged, so that the structure is simplified, the production cost is reduced, and the production period is shortened.
Description
Technical Field
The invention relates to a thermomagnetic tripping module, and belongs to the technical field of circuit breakers.
Background
The present thermo-magnetic trip module mainly adopts a modularized structure, and the modularized structure comprises a bracket, a rotating shaft and the like, for example, as shown in fig. 1 and 2, and the present thermo-magnetic trip module comprises a movable armature and a U-shaped fixed armature, an air gap is arranged between the movable armature and the U-shaped fixed armature, a conductor connected with the fixed armature, a current of a corresponding electrode flows through the conductor, an elastic piece for biasing the movable armature to an isolated rest position, the position corresponding to the largest air gap, and a delay device connected with the movable armature.
The delay device also comprises a damper arranged on the movable armature, and the damper is in an invalid state or an operating state through the change of the non-tripping position and the tripping position of the movable armature and the fixed armature.
The movable armature is pivotally mounted on a bracket which is fixed to the conductor and the damper includes a thin metal shutter disposed in a gap between the movable armature and the bracket. The damper blade includes a base portion caught on the bracket projection and an upper portion connected to the movable armature driving portion.
The fixed bracket is provided with a transverse lug for limiting the static position of the movable armature and the gap for accommodating the brake pad.
A compression spring mounted between the base of the bracket and the edge of the armature on the side opposite the gap forms an elastic return member for the movable armature.
As can be seen from the above description and fig. 1 and 2, the thermomagnetic trip module in the prior art has very complicated structure and numerous parts, which not only increases the cost of the product, but also increases the production cost and prolongs the production period.
Disclosure of Invention
The invention aims at the technical problems mentioned in the background art, and is realized by adopting the following technical scheme:
the thermomagnetic tripping module comprises a first magnetic tripping sleeved on the circuit breaker and a second magnetic tripping fixedly installed on the circuit breaker, wherein the first magnetic tripping is an armature, the second magnetic tripping is a magnetic yoke, the armature corresponds to the magnetic yoke, the armature is sleeved on the thermal tripping, the thermal tripping is double-gold, the top of the double-gold is provided with an adjusting bolt, the adjusting bolt corresponds to a traction rod arranged on an operation structure of the circuit breaker, and when the double-gold is heated and bent, the adjusting bolt contacts with the traction rod and moves the traction rod, so that the operation structure is driven to move.
The adjusting bolt corresponds to a traction rod arranged on an operation structure of the circuit breaker, and aims to drive the traction rod to act by the adjusting bolt at the top of the double-metal part when heating, and then the thermal trip is realized; when overcurrent occurs, the inclined plane at the top of the armature drives the traction rod to act, and at the moment, the magnetic trip is realized; both thermal and magnetic trips are collectively referred to as thermal-magnetic trips.
Further, a bearing seat is arranged at the bottom of the armature, and the bearing seat is sleeved on the circuit breaker through a shaft.
As a preferred example, the thermomagnetic trip module further comprises an outlet line, wherein the middle part of the outlet line is positioned between the armature and the magnetic yoke, the top plane and the bottom plane of the outlet line are respectively connected with the circuit breaker, and the bottom of the double-gold is connected with the side wall of the outlet line.
Furthermore, the bottom side wall of the wire outlet row and the bottom side wall of the double-gold are respectively provided with a fixed mounting hole, and the wire outlet row and the fixed mounting holes in the double-gold are fixed through a connecting piece.
As a preferred example, one end of the traction rod is provided with a protrusion, and the inverted-L-shaped side wall of the traction rod corresponds to the end of the adjusting bolt.
As a preferable example, the structure of the yoke is a flat plate structure, and the structure of the armature is a bent structure.
Further, the structure of the magnetic yoke is a flat plate structure, bending structures are respectively arranged at two ends of the armature, the two bending structures correspond to each other, a contact part is arranged at the top of one end of the armature, and a contact point is arranged at the top of the contact part.
Further, the contact portion, the contact point and one end of the armature are integrally formed.
As a preferred example, the bottom of the armature is provided with a bearing seat which is sleeved on the circuit breaker through a shaft.
As a preferred example, a reset torsion spring is sleeved on the shaft, one end part of the reset torsion spring is propped against the outlet line, and the other end part of the reset torsion spring is propped against the side wall of the armature.
A circuit breaker adopts the thermomagnetic tripping module.
The beneficial effects of the invention are as follows: compared with the traditional thermomagnetic tripping module of the double-breakpoint molded case circuit breaker, the thermomagnetic tripping module has the advantages that the whole structure is simpler, the tripping speed is accelerated, and only double-gold, the armature iron, the magnetic yoke and the traction rod are arranged, so that the structure is simplified, the production cost is reduced, and the production period is shortened.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a partial exploded view of the prior art;
FIG. 3 is a schematic perspective view of the present invention, and is also a schematic view of the positional relationship between the fixing posts and the fixing holes;
FIG. 4 is a schematic view of the structure of the present invention under another view, and is also a schematic view of the positional relationship of the bearing seat, the shaft and the fixed mounting hole;
fig. 5 is a schematic diagram of an armature according to the present invention.
In the figure: an armature 1; a yoke 2; double gold 3; an adjusting bolt 4; a traction rod 5; an outlet line 6; a contact block 7; a reset torsion spring 8; a fixed mounting hole 9; a shaft 10; a bearing housing 11; a contact point 12; a contact portion 13.
Detailed Description
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 3-5, the thermomagnetic tripping module comprises a first magnetic tripping sleeved on the circuit breaker in a rotating way and a second magnetic tripping fixedly installed on the circuit breaker, wherein the first magnetic tripping is an armature 1, the second magnetic tripping is a magnetic yoke 2, the armature 1 corresponds to the magnetic yoke 2, the armature 1 is sleeved on the thermotripping, the thermotripping is a double-metal 3, an adjusting bolt 4 is arranged on the side wall of the top of the double-metal 3, the adjusting bolt 4 corresponds to a traction rod 5 arranged on an operation structure on the circuit breaker, and when the double-metal 3 heats and bends, the adjusting bolt contacts with the traction rod 5 and moves the traction rod, so that the operation structure is driven to move.
The thermomagnetic tripping module further comprises an outgoing line row 6, the middle part of the outgoing line row 6 is positioned between the armature 1 and the magnetic yoke 2, the top plane and the bottom plane of the outgoing line row 6 are respectively connected with the circuit breaker, and the bottom of the double-metal 3 is connected with the side wall of the outgoing line row 6.
It should be noted that, the bottom side wall of the wire outlet row 6 and the bottom side wall of the double-gold 3 are both provided with fixed mounting holes 9, and the double-gold 3 and the wire outlet row 6 are fixed by mounting connecting pieces in the two fixed mounting holes 9, wherein the connecting pieces are rivets.
By adopting the scheme, the aim is to realize direct connection of the thermomagnetic tripping and the outgoing line row 6, thereby saving an intermediate structure, enabling the whole structure to be more compact and enabling the whole product to embody better performance.
One end of the traction rod 5 is provided with a bulge, and the bulge on the traction rod 5 corresponds to the end of the adjusting bolt 4.
The structure of the magnetic yoke 2 is a flat plate structure, two ends of the armature 1 are respectively provided with a bending structure, the two bending structures correspond to each other, a contact part 13 is arranged at the top of one end of the armature 1, a contact point 12 is arranged at the top of the contact part 13, and the contact part 13, the contact point 13 and one end of the armature 1 are integrally formed.
The bottom of the armature 1 is provided with a bearing seat 11, and the bearing seat 11 is sleeved on the circuit breaker through a shaft 10.
The shaft 10 is sleeved with a reset torsion spring 8, one end part of the reset torsion spring 8 is propped against the outlet wire row 6, and the other end part of the reset torsion spring is propped against the side wall of the armature 1.
By adopting the scheme, the purpose is that the armature 1 can be reset under the assistance of the reset spring 8 and the cooperation of the shaft 10, namely, the separation and combination between the armature 1 and the magnetic yoke 2 are realized.
A circuit breaker adopts the thermomagnetic tripping module.
The operation mechanism in this patent is only required to be an existing operation mechanism.
The working principle of the thermomagnetic tripping module is as follows: when overload current exists in the circuit, the double-metal 3 heats and bends to deform until contacting with the traction rod 5 of the operating mechanism and enabling the traction rod to move until the operating mechanism drives the moving contact to move towards the opening position (the moving mode of the operating mechanism driving the moving contact is the prior art and is not described in detail herein), so that the circuit breaker is opened;
s2, when short-circuit current exists in the circuit, under the action of a magnetic field, the armature 1 moves towards the direction of the magnetic yoke 2 (mainly the magnetic yoke 2 and the armature 1 are magnetized, electromagnetic attraction force is generated between the magnetic yoke 2 and the armature 1), the magnetic yoke 2 is fixed on the outlet line 6, the armature 1 moves towards the direction of the magnetic yoke 2 under the action of the electromagnetic attraction force), when the armature 1 contacts with the traction rod 5 and moves, the circuit breaker is opened until the moving contact of the operating mechanism drives the moving contact to the opening position (the moving mode of the moving contact of the operating mechanism is the prior art, and the moving contact of the operating mechanism is not described in detail herein), the structure of the magnetic yoke 2 is a flat plate structure, and the structure of the armature 1 is a bending structure, so that the aim of reducing cost is achieved.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The thermomagnetic tripping module comprises a first magnetic tripping which is rotationally sleeved on the circuit breaker and a second magnetic tripping which is fixedly arranged on the circuit breaker, and is characterized in that: the first magnetic trip is an armature, the second magnetic trip is a magnetic yoke, the armature is corresponding to the magnetic yoke, the armature is sleeved on the thermal trip, the thermal trip is double-gold, the top of the double-gold is provided with an adjusting bolt, the adjusting bolt corresponds to a traction rod arranged on an operation structure of the circuit breaker, and when the double-gold is heated and bent, the adjusting bolt contacts with the traction rod and moves the traction rod, so that the operation structure is driven to move.
2. The thermomagnetic trip module according to claim 1, wherein: the thermomagnetic tripping module further comprises an outgoing line row, the middle part of the outgoing line row is positioned between the armature and the magnetic yoke, the top plane and the bottom plane of the outgoing line row are respectively connected with the circuit breaker, and the bottom of the double-gold is connected with the side wall of the outgoing line row.
3. The thermomagnetic trip module according to claim 1, wherein: the end part of one end of the traction rod is provided with a bulge, and the bulge on the traction rod corresponds to the end part of the adjusting bolt.
4. The thermomagnetic trip module according to claim 1, wherein: the structure of the magnetic yoke is a flat plate structure, bending structures are respectively arranged at two ends of the armature, the two bending structures correspond to each other, a contact part is arranged at the top of one end of the armature, and a contact point is arranged at the top of the contact part.
5. The thermomagnetic trip module according to claim 4, wherein: the contact portion, the contact point and one end of the armature are integrally formed.
6. The thermomagnetic trip module according to claim 4, wherein: the bottom of the armature is provided with a bearing seat, and the bearing seat is sleeved on the circuit breaker through a shaft.
7. The thermomagnetic trip module according to claim 6, wherein: a reset torsion spring is sleeved on the shaft, one end part of the reset torsion spring is propped against the outlet line row in claim 2, and the other end part of the reset torsion spring is propped against the side wall of the armature.
8. A circuit breaker, characterized in that: use of the thermo-magnetic trip module of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311081704.1A CN116978750A (en) | 2023-08-25 | 2023-08-25 | Thermomagnetic tripping module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311081704.1A CN116978750A (en) | 2023-08-25 | 2023-08-25 | Thermomagnetic tripping module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116978750A true CN116978750A (en) | 2023-10-31 |
Family
ID=88476754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311081704.1A Pending CN116978750A (en) | 2023-08-25 | 2023-08-25 | Thermomagnetic tripping module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116978750A (en) |
-
2023
- 2023-08-25 CN CN202311081704.1A patent/CN116978750A/en active Pending
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