CN213878001U - Transmission mechanism of permanent magnet circuit breaker - Google Patents
Transmission mechanism of permanent magnet circuit breaker Download PDFInfo
- Publication number
- CN213878001U CN213878001U CN202022741833.7U CN202022741833U CN213878001U CN 213878001 U CN213878001 U CN 213878001U CN 202022741833 U CN202022741833 U CN 202022741833U CN 213878001 U CN213878001 U CN 213878001U
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- Prior art keywords
- permanent magnet
- connecting frame
- boss
- static contact
- circuit breaker
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- 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.)
- Expired - Fee Related
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 title claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 42
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 1
- 230000005347 demagnetization Effects 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to the technical field of circuit breakers, in particular to a transmission mechanism of a permanent magnet circuit breaker, which comprises a shell, an installation cavity, a touch switch and an installation seat which are arranged in the shell, a permanent magnet moving contact and a static contact which are arranged in the installation cavity from top to bottom in sequence, a connecting frame for installing the static contact, an electrified coil for installing the connecting frame, and a rotating shaft arranged at one end of the static contact; in practical application, when the permanent magnet switch is normally used, the permanent magnet moving contact is driven to ascend or descend to abut against the touch switch by changing the current direction on the electrified coil, so that switching-on or switching-off is realized; after the power-on coil fails in a power-off state, the static contact is driven to rotate on the connecting frame by manually rotating the rotating shaft, the electrode surface of the static contact facing the permanent magnet moving contact is changed, the permanent magnet moving contact is enabled to ascend or descend to abut against the touch switch, and manual brake opening or closing is achieved; the utility model discloses the size is small and exquisite, touches in a flexible way, and permanent magnetism circuit breaker still can normal use after the demagnetization.
Description
Technical Field
The utility model relates to a circuit breaker technical field specifically is a transmission of permanent magnetism circuit breaker.
Background
In recent years, switches with permanent magnet operating mechanisms have been widely used in the field of power distribution in power systems due to their advantages of simple structure, few parts, long service life, frequent operation, etc. The operating mechanism of the circuit breaker is generally of three types, namely electromagnetic type, spring type and permanent magnet type. The permanent magnet type operating mechanism attracts more and more attention by virtue of its advantages of high reliability, low energy consumption, no maintenance, synchronous operation and the like
The prior Chinese patent with the publication number of CN204257560U discloses a permanent magnet driving circuit breaker, which comprises a permanent magnet moving contact group, a fixed contact group and an arc extinguish chamber, wherein the permanent magnet moving contact group comprises a permanent magnet moving contact seat and a permanent magnet moving contact which is electrically connected with the permanent magnet moving contact seat and is positioned in the arc extinguish chamber; the static contact group comprises a magnetic conduction static contact seat, a magnetic conduction static contact and a driving permanent magnet; a magnetic conduction shielding cover surrounding the permanent magnet moving contact and the magnetic conduction static contact is fixed on the magnetic conduction static contact seat; the outer periphery of the permanent magnet moving contact seat is connected to the outer periphery of the magnetic conduction static contact seat through a sealing body to form a sealed arc extinguish chamber. The utility model discloses simple structure has realized the complete sealed isolation of explosion chamber, utilizes homopolar repulsion, heteropolar principle accuse brake, static contact to open and shut simultaneously, and the action is reliable, extension circuit breaker life, reduction accident rate, in addition, introduces the magnetic shield cover of leading in the explosion chamber, establishes the magnetic field automatically between permanent magnetism moving contact, magnetic conduction static contact and shield cover, realizes the magnetic blow-out arc function, has extensive use value.
However, in practical use, the above solution has the following problems: firstly, the whole breaker device is large in size and heavy; secondly, as the position change of the driving permanent magnet needs time, the time cannot be controlled quickly and flexibly; and thirdly, once the static contact fails in case of power failure, the permanent magnet moving contact falls down and is locked in a switching-off state, and the normal use of the circuit is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to foretell not enough, provide a small and exquisite size, touch in a flexible way, the permanent magnetism circuit breaker's of demagnetization back permanent magnetism circuit breaker still can normal use drive mechanism.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a transmission mechanism of a permanent magnet circuit breaker comprises a shell, an installation cavity arranged in the shell, a touch switch arranged at the top of the shell, an installation seat arranged at the bottom of the shell, a permanent magnet moving contact and a static contact which are arranged in the installation cavity from top to bottom in sequence, a connecting frame for mounting the static contact, an electrified coil for mounting the connecting frame, the permanent magnet moving contact is connected with the inner wall of the cavity of the mounting cavity in a vertically sliding manner, the static contact is rotatably connected on the connecting frame, one end of the static contact is provided with a rotating shaft, one end of the rotating shaft extends to the outside of the shell, the output end of the touch switch faces the permanent magnet moving contact, the permanent magnet moving contact slides up and down and is pressed against the touch switch intermittently, the electrified coil is fixedly connected to the mounting seat, and the top and the bottom of the static contact are respectively an N pole and an S pole.
Further, the static contact comprises a rectangular magnet, a cylindrical front boss and a cylindrical rear boss are arranged at the front end and the rear end of the rectangular magnet respectively, and the cylindrical front boss and the cylindrical rear boss are used for being rotatably connected with the connecting frame.
Further, a boss inner hole is coaxially formed in the cylindrical rear boss, the shell and the electrified coil are right aligned to the boss inner hole, connecting holes are formed in the boss inner hole respectively, the boss inner hole is fixedly connected with one end of the rotating shaft, and the rotating shaft is rotatably arranged in the connecting holes in a penetrating mode.
Furthermore, the boss inner hole is a hexagonal blind hole, and a hexagonal boss is arranged at one end of the rotating shaft extending into the hexagonal blind hole.
Further, the link includes preceding link and back link, preceding link and back link fixed connection respectively are in both sides around the inner circle of circular telegram coil.
Further, the front connecting frame comprises a front upper limiting block and a front lower limiting block which are arranged oppositely up and down, and front arc grooves which are used for being rotatably connected with the cylindrical front boss are respectively arranged on the opposite surfaces of the front upper limiting block and the front lower limiting block; the rear connecting frame comprises a rear upper limiting block and a rear lower limiting block which are arranged up and down oppositely, and rear arc grooves which are used for being rotatably connected with the cylindrical rear lug boss are respectively arranged on the opposite surfaces of the rear upper limiting block and the rear lower limiting block.
Furthermore, the four peripheral surfaces of the static contact are coated with electromagnetic wave shielding coatings.
The utility model has the advantages that:
in practical application, when the permanent magnet switch is normally used, the permanent magnet moving contact is driven to ascend or descend to abut against the touch switch by changing the current direction on the electrified coil, so that switching-on or switching-off is realized; after the power-on coil fails in a power-off state, the static contact is driven to rotate on the connecting frame by manually rotating the rotating shaft, the electrode surface of the static contact facing the permanent magnet moving contact is changed, the permanent magnet moving contact is enabled to ascend or descend to abut against the touch switch, and manual brake opening or closing is achieved; the utility model discloses the size is small and exquisite, touches in a flexible way, and permanent magnetism circuit breaker still can normal use after the demagnetization.
Drawings
Fig. 1 is a schematic view of the overall structure of the utility model during closing;
FIG. 2 is a schematic view of the overall structure of the present invention during opening;
fig. 3 is a schematic structural view of the middle stationary contact, the connecting frame and the rotating shaft of the present invention;
reference numerals: a housing 1; a mounting cavity 11; a touch switch 2; a mounting base 3; a permanent magnet moving contact 4; a static contact 5; a rectangular magnet 51; a cylindrical front boss 52; a cylindrical rear boss 53; a boss inner hole 531; a connecting frame 6; a front upper limit block 611; a lower front limit block 612; a front arc groove 613; a rear upper limit block 621; a lower rear limit block 622; a rear arc groove 623; an energizing coil 7; a rotating shaft 8; hexagonal boss 81.
Detailed Description
As shown in fig. 1, 2 and 3, a transmission mechanism of a permanent magnet circuit breaker includes a housing 1, an installation cavity 11 disposed in the housing 1, a touch switch 2 disposed on a top of the housing 1, an installation base 3 disposed on a bottom of the housing 1, a permanent magnet moving contact 4 and a static contact 5 disposed inside the installation cavity 11 in sequence from top to bottom, a connection frame 6 for installing the static contact 5, an electrified coil 7 for installing the connection frame 6, the permanent magnet moving contact 4 being slidably connected to an inner wall of a cavity of the installation cavity 11 up and down, the static contact 5 being rotatably connected to the connection frame 6, one end of the static contact 5 having a rotating shaft 8, one end of the rotating shaft 8 extending to an outside of the housing 1, an output end of the touch switch 2 being disposed toward the permanent magnet moving contact 4, the permanent magnet moving contact 4 being intermittently abutted to the touch switch 2 when sliding up and down, the electrified coil 7 is fixedly connected to the mounting base 3, and the top and the bottom of the static contact 5 are respectively an N pole and an S pole.
When the permanent magnet moving contact is in work, the permanent magnet moving contact 4 is driven to ascend or descend to abut against the touch switch 2 by changing the current direction on the electrified coil 7 during normal use, so that switching-on or switching-off is realized; after the power-on coil 7 is out of work in a power-off mode, the static contact 5 is driven to rotate on the connecting frame 6 by manually rotating the rotating shaft 8, the electrode surface of the static contact 5 facing the permanent magnet moving contact 4 is changed, the permanent magnet moving contact 4 is enabled to ascend or descend to abut against the touch switch 2, and manual opening or closing is achieved; the utility model discloses the size is small and exquisite, touches in a flexible way, and permanent magnetism circuit breaker still can normal use after the demagnetization.
As shown in fig. 1, 2 and 3, the fixed contact 5 includes a rectangular magnet 51, a cylindrical front boss 52 and a cylindrical rear boss 53 are respectively disposed at the front end and the rear end of the rectangular magnet 51, and the cylindrical front boss 52 and the cylindrical rear boss 53 are used for rotatably connecting the connecting frame 6; in this embodiment, during closing, the rotating shaft 8 is rotated manually to replace the electrode surface of the rectangular magnet 51 facing the permanent magnet moving contact 4, and when the surface of the rectangular magnet 51 facing the permanent magnet moving contact 4 and the permanent magnet moving contact 4 have the same magnetism, the repulsive force between the magnets pushes the permanent magnet moving contact 4 to slide upwards to abut against the touch switch 2; during the separating brake, the electrode face of rectangle magnet 51 towards permanent magnet moving contact 4 is changed to manual rotation pivot 8, and when rectangle magnet 51 was attracted towards the one side of permanent magnet moving contact 4 and permanent magnet moving contact 4 magnetism opposite poles, the appeal between magnet promoted permanent magnet moving contact 4 gliding and leaves touch switch 2 bottom, through boss 52 and cylindrical back boss 53 and link 6 rotatable coupling before cylindrical, the rectangle magnet 51 of being convenient for rotates and changes the electrode face.
As shown in fig. 1, 2 and 3, a boss inner hole 531 is coaxially formed in the cylindrical rear boss 53, a connection hole 71 is respectively formed in the housing 1 and the power coil 7 opposite to the boss inner hole 531, the boss inner hole 531 is fixedly connected to one end of the rotating shaft 8, and the rotating shaft 8 is rotatably inserted into the connection hole 71; in this embodiment, the rotating shaft 8 penetrates into the housing 1 from the connecting hole 71 and is inserted into the boss inner hole 531 to drive the static contact 5 to rotate and replace the electrode surface.
As shown in fig. 1, 2 and 3, the boss inner hole 531 is a hexagonal blind hole, and a hexagonal boss 81 is disposed at one end of the rotating shaft 8 extending into the hexagonal blind hole; in this embodiment, the hexagonal boss 81 on the rotating shaft 8 is inserted into the hexagonal blind hole, so that the rotating shaft 8 can be rotated to drive the static contact 5 to rotate and replace the electrode surface.
As shown in fig. 1, 2 and 3, the connection frame 6 includes a front connection frame and a rear connection frame, and the front connection frame and the rear connection frame are respectively fixedly connected to the front side and the rear side of the inner ring of the energizing coil 7; in this embodiment, a cylindrical front boss 52 is rotatably coupled by a front coupling frame; the cylindrical rear boss 53 is rotatably coupled by a rear coupling bracket.
As shown in fig. 1, 2 and 3, the front connecting frame includes a front upper limiting block 611 and a front lower limiting block 612, which are disposed opposite to each other, and front arc grooves 613 for rotatably connecting the cylindrical front bosses 52 are respectively disposed on opposite surfaces of the front upper limiting block 611 and the front lower limiting block 612; the rear connecting frame comprises a rear upper limiting block 621 and a rear lower limiting block 622 which are arranged oppositely up and down, and rear arc grooves 623 which are used for rotatably connecting the cylindrical rear bosses 53 are respectively arranged on the opposite surfaces of the rear upper limiting block 621 and the rear lower limiting block 622; in this embodiment, the cylindrical front boss 52 is rotatably coupled in the front arc groove 613 by the front upper limit block 611 and the front lower limit block 612, and the cylindrical rear boss 53 is rotatably coupled in the rear arc groove 623 by the rear upper limit block 621 and the rear lower limit block 622.
As shown in fig. 1, 2 and 3, the periphery of the stationary contact 5 is coated with an electromagnetic wave shielding coating; in this embodiment, the electromagnetic wave shielding coating is coated on the four peripheral surfaces of the static contact 5, so as to prevent the permanent magnet on the static contact 5 from influencing the magnetic field direction on the electrified coil 7 during normal operation.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope and spirit of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a drive mechanism of permanent magnetism circuit breaker which characterized in that: comprises a shell (1), an installation cavity (11) arranged in the shell (1), a touch switch (2) arranged at the top of the shell (1), an installation base (3) arranged at the bottom of the shell (1), a permanent magnetic moving contact (4) and a static contact (5) which are arranged in the installation cavity (11) from top to bottom in sequence, a connecting frame (6) used for installing the static contact (5), an electrified coil (7) used for installing the connecting frame (6), wherein the permanent magnetic moving contact (4) is connected with the inner wall of the cavity of the installation cavity (11) in a vertical sliding manner, the static contact (5) is rotatably connected onto the connecting frame (6), one end of the static contact (5) is provided with a rotating shaft (8), one end of the rotating shaft (8) extends to the outside of the shell (1), and the output end of the touch switch (2) faces towards the permanent magnetic moving contact (4), the permanent magnet moving contact (4) slides up and down and is pressed against the touch switch (2) intermittently, the electrified coil (7) is fixedly connected to the mounting seat (3), and the top and the bottom of the static contact (5) are respectively an N pole and an S pole.
2. The transmission mechanism of a permanent magnet circuit breaker according to claim 1, wherein: the static contact (5) comprises a rectangular magnet (51), a cylindrical front boss (52) and a cylindrical rear boss (53) are respectively arranged at the front end and the rear end of the rectangular magnet (51), and the cylindrical front boss (52) and the cylindrical rear boss (53) are used for being rotatably connected with the connecting frame (6).
3. The transmission mechanism of a permanent magnet circuit breaker according to claim 2, wherein: boss hole (531) have coaxially been seted up on cylindrical back boss (53), just on casing (1) and circular telegram coil (7) connecting hole (71) have been seted up respectively to boss hole (531), boss hole (531) fixed connection the one end of pivot (8), pivot (8) are rotatable to be worn to establish in connecting hole (71).
4. The transmission mechanism of a permanent magnet circuit breaker according to claim 3, wherein: boss hole (531) are the hexagon blind hole, pivot (8) stretch into one end in the hexagon blind hole is provided with hexagon boss (81).
5. The transmission mechanism of a permanent magnet circuit breaker according to claim 2, wherein: the connecting frame (6) comprises a front connecting frame and a rear connecting frame, and the front connecting frame and the rear connecting frame are respectively and fixedly connected to the front side and the rear side of the inner ring of the electrified coil (7).
6. The transmission mechanism of a permanent magnet circuit breaker according to claim 5, wherein: the front connecting frame comprises a front upper limiting block (611) and a front lower limiting block (612) which are arranged oppositely up and down, and front arc grooves (613) which are used for rotatably connecting the cylindrical front bosses (52) are respectively arranged on the opposite surfaces of the front upper limiting block (611) and the front lower limiting block (612); the rear connecting frame comprises a rear upper limiting block (621) and a rear lower limiting block (622) which are arranged up and down oppositely, and rear arc grooves (623) which are used for being rotatably connected with the cylindrical rear boss (53) are respectively arranged on the right opposite surfaces of the rear upper limiting block (621) and the rear lower limiting block (622).
7. The transmission mechanism of a permanent magnet circuit breaker according to claim 1, wherein: the four peripheral surfaces of the static contact (5) are coated with electromagnetic wave shielding paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022741833.7U CN213878001U (en) | 2020-11-24 | 2020-11-24 | Transmission mechanism of permanent magnet circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022741833.7U CN213878001U (en) | 2020-11-24 | 2020-11-24 | Transmission mechanism of permanent magnet circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213878001U true CN213878001U (en) | 2021-08-03 |
Family
ID=77038721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022741833.7U Expired - Fee Related CN213878001U (en) | 2020-11-24 | 2020-11-24 | Transmission mechanism of permanent magnet circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213878001U (en) |
-
2020
- 2020-11-24 CN CN202022741833.7U patent/CN213878001U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210803 |