CN113192803B - Auxiliary contact structure for universal circuit breaker and application method thereof - Google Patents
Auxiliary contact structure for universal circuit breaker and application method thereof Download PDFInfo
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- CN113192803B CN113192803B CN202110448042.1A CN202110448042A CN113192803B CN 113192803 B CN113192803 B CN 113192803B CN 202110448042 A CN202110448042 A CN 202110448042A CN 113192803 B CN113192803 B CN 113192803B
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- connecting rod
- deflector rod
- main shaft
- rod
- umbrella
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000009471 action Effects 0.000 claims description 13
- 235000014676 Phragmites communis Nutrition 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
-
- 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
Abstract
The invention discloses an auxiliary contact structure for a universal circuit breaker and a use method thereof, wherein the auxiliary contact structure comprises a bracket, a first deflector rod is arranged on the bracket, a plurality of groups of micro switches are arranged in an inner cavity of the bracket, a main shaft is arranged at the bottom of the bracket, one end of the first deflector rod is rotationally connected with the main shaft through a rotary connecting rod, the auxiliary connecting rod is connected with the micro switches through a first umbrella-shaped connecting rod and a second umbrella-shaped connecting rod, and a spring is arranged between the first umbrella-shaped connecting rod and the second umbrella-shaped connecting rod. The auxiliary contact structure for the universal circuit breaker is matched with the first deflector rod, the rotary connecting rod, the auxiliary connecting rod, the first umbrella-shaped connecting rod, the second umbrella-shaped connecting rod, the spring, the main shaft and the like for use, so that the micro switch can be reliably switched, the problem of false faults caused by bouncing is avoided, and the overall safety and stability are improved; and the whole and the micro switch are assembled into a modularized structure, so that the installation is convenient, and the storage, the transportation and the transportation are convenient.
Description
Technical Field
The invention relates to an auxiliary contact structure for a universal circuit breaker and a use method thereof.
Background
The universal circuit breaker is an important control element in the power system, mainly plays roles in overload, short circuit and the like, and is internally provided with a plurality of groups of auxiliary switches, wherein the auxiliary switch groups are linked with a main shaft of an operating mechanism of the universal circuit breaker, and the signals for opening and closing the circuit breaker are provided by changing the on-off state of the auxiliary switch groups. When the universal breaker is opened, the main shaft is limited by a limiting shaft in the mechanism, the main shaft and the limiting shaft are both made of metal, and the main shaft swings in a larger range due to collision between the metal and the metal.
The traditional auxiliary contact is arranged by the main shaft of the universal circuit breaker and is linked with the main shaft of the universal circuit breaker, so that the connection of the auxiliary contact can be influenced when the main shaft swings in a large range, namely, the main shaft bounces in a large range, so that a false fault occurs in a power distribution system, and the reliability of power distribution of the system is influenced.
Disclosure of Invention
The invention aims to provide an auxiliary contact structure for a universal circuit breaker and a use method thereof, which are used for solving the problems that the auxiliary contact provided in the background art is arranged by a main shaft of the universal circuit breaker and is linked with the main shaft of the universal circuit breaker, so that the connection of the auxiliary contact is also influenced when the main shaft swings within a larger range, namely, the main shaft bounces to a larger extent, so that a false fault occurs in a power distribution system and the reliability of power distribution of the system is influenced.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an auxiliary contact structure for universal circuit breaker, includes the support, install first driving lever on the support, and install multiunit micro-gap switch in the inner chamber of support, the bottom of support is provided with the main shaft, the one end of first driving lever is connected with the main shaft rotation through rotatory connecting rod, and the other end of first driving lever is provided with auxiliary link, auxiliary link is connected with micro-gap switch through first umbrella-like connecting rod and second umbrella-like connecting rod, and is provided with the spring between first umbrella-like connecting rod and the second umbrella-like connecting rod.
Preferably, a second deflector rod is arranged on the main shaft and close to the rotary connecting rod, and a second through hole matched with the main shaft in size is formed in the second deflector rod.
Preferably, a second cylindrical boss for assisting in pressing the semicircular surface of the first deflector rod is arranged on the second deflector rod.
Preferably, the first deflector rod comprises a semicircular surface and a horizontal surface, and an integrated structure is formed between the semicircular surface and the horizontal surface.
Preferably, a first cylindrical boss is arranged on the first deflector rod, and a square boss is arranged on the first deflector rod in a manner of being tightly attached to the first cylindrical boss.
Preferably, the rotary connecting rod is provided with a third through hole matched with the main shaft in size,
preferably, the rotary connecting rod is further provided with a third cylindrical boss for limiting and a fourth cylindrical boss for connecting with the first deflector rod.
Preferably, the auxiliary connecting rod is provided with a square through groove matched with the square boss, and the auxiliary connecting rod is also provided with a first through hole.
Preferably, a limiting boss is arranged at one end of the main shaft, which is close to the second deflector rod, and a countershaft is arranged on the limiting boss.
The application method of the auxiliary contact structure for the universal circuit breaker comprises the step of controlling the opening and closing actions of the circuit breaker in a linkage way through the auxiliary contact structure:
the auxiliary contact structure is used for controlling the opening action of the breaker in a linkage way, and the method comprises the following steps:
(A1) Firstly, the main shaft is rotated to rotate clockwise, and meanwhile, the second deflector rod rigidly connected with the main shaft also acts in the same direction;
(B2) Then, the second cylindrical boss of the second deflector rod presses the semicircular surface of the first deflector rod, so that the first deflector rod rotates anticlockwise around the first cylindrical boss of the rotation center, and the first deflector rod rotates and drives the rigidly connected auxiliary connecting rod to rotate in the same direction at the same time, and the first umbrella-shaped connecting rod and the second umbrella-shaped connecting rod also rotate in the same following way;
(C3) Next, the reed of the micro switch is toggled in the direction opposite to the paper surface by the horizontal plane of the first deflector rod, so that the micro switch is switched;
(D4) Finally, when the limit boss on the main shaft is in contact with the auxiliary shaft but the main shaft does not swing reversely, the rotation centers of the first deflector rod, the first umbrella-shaped connecting rod and the second umbrella-shaped connecting rod pass through dead points of the three parts on a straight line, the position of the first deflector rod is fixed, the first deflector rod does not rotate along with the metal collision swing of the main shaft, and the micro switch finishes switching, namely the breaker finishes breaking action;
the auxiliary contact structure linkage control circuit breaker closing action comprises the following steps:
(A2) Firstly, the main shaft is rotated to enable the main shaft to rotate anticlockwise, and meanwhile, the second deflector rod rigidly connected with the main shaft also acts in the same direction;
(B2) When the second deflector rod is contacted with the third cylindrical boss of the rotary connecting rod, the rotary connecting rod is driven to rotate anticlockwise around the main shaft;
(C2) The fourth cylindrical boss is contacted with the rear of the semicircular surface of the first deflector rod, and drives the first deflector rod to rotate clockwise around the rotation center of the first deflector rod, so that the reed of the micro switch is released by the horizontal plane of the first deflector rod, and the micro switch is switched to another state;
(D2) And finally, when the first deflector rod, the first umbrella-shaped connecting rod and the second umbrella-shaped connecting rod pass through the dead point positions, the position of the first deflector rod is fixed, a certain gap is reserved between the fourth cylindrical boss of the rotary connecting rod and the rear aspect of the semicircular surface of the first deflector rod, and at the moment, the micro switch is successfully switched to another state, namely the circuit breaker completes the closing action.
Compared with the prior art, the invention has the advantages that:
according to the invention, through the matched use of the first deflector rod, the rotary connecting rod, the auxiliary connecting rod, the first umbrella-shaped connecting rod, the second umbrella-shaped connecting rod, the spring, the main shaft and the like, the micro switch can be reliably switched, the problem of false failure caused by bouncing is avoided, and the overall safety and stability are improved; and the whole and the micro switch are assembled into a modularized structure, so that the installation is convenient, and the storage, the transportation and the transportation are convenient.
Drawings
Fig. 1 is a schematic diagram of a switching-on state structure of an integral circuit breaker according to the present invention;
FIG. 2 is a schematic diagram of the overall breaker open state structure of the present invention;
FIG. 3 is a schematic view of the invention with the bracket removed in the closed state;
FIG. 4 is a schematic view of a connection structure of a first umbrella-shaped connecting rod and a second umbrella-shaped connecting rod according to the present invention;
FIG. 5 is a schematic view of the three-dimensional structure of the auxiliary link according to the present invention;
FIG. 6 is a schematic view of a three-dimensional structure of a first lever according to the present invention;
FIG. 7 is a schematic three-dimensional view of a second lever according to the present invention;
fig. 8 is a schematic view of a three-dimensional structure of a rotary link according to the present invention.
In the figure: 1. a bracket; 2. a main shaft; 21. a limit boss; 3. an auxiliary connecting rod; 31. square through groove; 32. a first through hole; 4. a first umbrella-shaped link; 5. a second umbrella-shaped link; 6. a spring; 7. a micro-switch; 8. a first deflector rod; 81. a semicircular surface; 82. a horizontal plane; 83. a first cylindrical boss; 84. square boss; 9. a second deflector rod; 91. a second through hole; 92. a second cylindrical boss; 10. a rotary connecting rod; 101. a third through hole; 102. a third cylindrical boss; 103. a fourth cylindrical boss; 11. and (3) a secondary shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an auxiliary contact structure for universal circuit breaker, including support 1, support 1 comprises two U type structures that the direction is opposite, and U type structure forms the U die cavity of certain size respectively, install first driving lever 8 on the support 1, and install multiunit micro-gap switch 7 in the inner chamber of support 1, the bottom of support 1 is provided with main shaft 2, the one end of first driving lever 8 is passed through rotatory connecting rod 10 and is connected with main shaft 2 rotation, and the other end of first driving lever 8 is provided with auxiliary link 3, auxiliary link 3 is connected with micro-gap switch 7 through first umbrella-shaped connecting rod 4 and second umbrella-shaped connecting rod 5, and be provided with spring 6 between first umbrella-shaped connecting rod 4 and the second umbrella-shaped connecting rod 5.
As shown in fig. 7, the second deflector rod 9 is a substantially cylindrical flat plate, a second circular through groove is disposed in the center of the second deflector rod 9, the second circular through groove is rigidly connected with the spindle 2, a second cylindrical boss 92 is disposed at a quarter point of the circular shape disposed on the second circular through groove, the second deflector rod 9 is disposed on the spindle 2 and close to the rotary connecting rod 10, the second deflector rod 9 is rigidly connected with the spindle 2, a second through hole 91 matched with the spindle 2 in size is formed in the second deflector rod 9, and a second cylindrical boss 92 is further disposed on the second deflector rod 9.
As shown in fig. 6, the first deflector rod 8 is in a substantially straight-line structure, a first cylindrical boss 83 is provided, a semicircular boss surface is provided at the lower side of the first cylindrical boss 83, the first deflector rod is used for contacting with the second deflector rod 9 when opening the brake to drive the second deflector rod 9 to act, a horizontal plane 82 is provided at the upper side of the first cylindrical boss 83, a reed for pressing the micro switch 7 when opening the brake is provided, the first deflector rod 8 comprises a semicircular surface 81 and a horizontal plane 82, an integrated structure is formed between the semicircular surface 81 and the horizontal plane 82, the first deflector rod 8 is further provided with the first cylindrical boss 83, the first deflector rod 8 is provided with a square boss 84 tightly attached to the first cylindrical boss 83, the first deflector rod 8 is installed in a through hole of the bracket 1 through the first cylindrical boss 83, and the first cylindrical boss 83 can rotate around the through hole.
As shown in fig. 8, the rotary link 10 is in a flat cylindrical structure, two cylindrical bosses are arranged at the edge of the cylinder according to a proper angle, namely a third cylindrical boss 102 and a fourth cylindrical boss 103, the setting directions of the two cylindrical bosses are opposite, the longer end of the second cylindrical boss 92 is positioned at the left side, the longer end of the third cylindrical boss 102 is positioned at the right side, the second cylindrical boss 92 is used for being interlocked with the second deflector rod 9, the third cylindrical boss 102 is used for driving the first deflector rod 8 to act clockwise, a third through hole 101 matched with the size of the main shaft 2 is formed in the rotary link 10, the rotary link 10 can rotate around the main shaft 2, and a third cylindrical boss 102 for limiting and a fourth cylindrical boss 103 used for being connected with the first deflector rod 8 are further arranged on the rotary link 10.
As shown in fig. 5, the auxiliary connecting rod 3 is a flat plate member with a similar linear structure, one end of the auxiliary connecting rod is slightly larger than the other end of the auxiliary connecting rod, a square through groove 31 is formed in the center of the larger end, a first through hole 32 is formed in the smaller end of the auxiliary connecting rod 3, the square through groove 31 matched with the square boss 84 is formed in the auxiliary connecting rod 3, the first deflector rod 8 is in rigid connection with the square through groove 31 formed in the auxiliary connecting rod 3 through the square boss 84, a first through hole 32 is formed in the auxiliary connecting rod 3, and the first umbrella-shaped connecting rod 4 is rotatably connected to the first through hole 32.
As shown in fig. 1, a limit boss 21 is further arranged at one end of the main shaft 2, which is close to the second deflector rod 9, the limit boss 21 is rigidly connected with the main shaft 2, a secondary shaft 11 is arranged on the limit boss 21, and when the breaker is opened, the main shaft 2 contacts with the secondary shaft 11 through the limit boss 21, so that the effect of limiting and stopping is achieved.
The application method of the auxiliary contact structure for the universal circuit breaker comprises the step of controlling the opening and closing actions of the circuit breaker in a linkage way through the auxiliary contact structure:
the auxiliary contact structure controls the opening action of the breaker in a linkage way: the main shaft 2 rotates clockwise, the second deflector rod 9 rigidly connected with the main shaft 2 also acts in the same direction, the second cylindrical boss 92 of the second deflector rod 9 presses the semicircular surface 81 of the first deflector rod 8, the first deflector rod 8 rotates anticlockwise around the first cylindrical boss 83 of the rotation center, and at the moment, the horizontal plane 82 of the first deflector rod 8 dials the reeds of the plurality of groups of micro switches 7 in the direction opposite to the paper surface, so that the micro switches 7 switch states; the first deflector rod 8 rotates to drive the rigidly connected auxiliary connecting rod 3 to rotate in the same direction, and the first umbrella-shaped connecting rod 4 and the second umbrella-shaped connecting rod 5 also rotate in the same direction; when the limit boss 21 on the main shaft 2 is in contact with the auxiliary shaft 11 but the reverse swing of the main shaft 2 does not occur, the rotation centers of the first deflector rod 8, the first umbrella-shaped connecting rod 4 and the second umbrella-shaped connecting rod 5 pass through dead points of the three parts on a straight line, the position of the first deflector rod 8 is fixed, the reed of the micro switch 7 is not rotated along with the metal collision swing of the main shaft 2, the problem of the micro switch 7 is reliably switched, the problem of switching and bouncing is effectively solved, and a certain gap exists between the second cylindrical boss 92 of the second deflector rod 9 and the semicircular surface of the first deflector rod 8 after the dead points are passed;
the auxiliary contact structure controls the closing action of the breaker in a linkage way: the main shaft 2 rotates anticlockwise, the second deflector rod 9 rigidly connected with the main shaft 2 also acts in the same direction, when the second deflector rod 9 contacts with the third cylindrical boss 102 of the rotary connecting rod 10, the rotary connecting rod 10 is driven to rotate anticlockwise around the main shaft 2, at the moment, the fourth cylindrical boss 103 contacts with the rear of the semicircular surface 81 of the first deflector rod 8, the first deflector rod 8 is driven to rotate clockwise around the rotation center of the first deflector rod 8, and the horizontal surface 82 of the first deflector rod 8 releases the reed of the micro switch 7, so that the micro switch 7 is switched to another state; after the first deflector rod 8, the first umbrella-shaped connecting rod 4 and the second umbrella-shaped connecting rod 5 pass through the dead point positions, the position of the first deflector rod 8 is fixed, and a certain gap is reserved between the fourth cylindrical boss 103 of the rotary connecting rod 10 and the rear aspect of the semicircular surface of the first deflector rod 8.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. An auxiliary contact structure for a universal circuit breaker is characterized in that: the automatic lifting device comprises a support (1), wherein a first deflector rod (8) is arranged on the support (1), a plurality of groups of micro switches (7) are arranged in an inner cavity of the support (1), a main shaft (2) is arranged at the bottom of the support (1), one end of the first deflector rod (8) is rotationally connected with the main shaft (2) through a rotary connecting rod (10), an auxiliary connecting rod (3) is arranged at the other end of the first deflector rod (8), the auxiliary connecting rod (3) is connected with the micro switches (7) through a first umbrella-shaped connecting rod (4) and a second umbrella-shaped connecting rod (5), and a spring (6) is arranged between the first umbrella-shaped connecting rod (4) and the second umbrella-shaped connecting rod (5);
a second deflector rod (9) is arranged on the main shaft (2) and close to the rotary connecting rod (10), and a second through hole (91) matched with the main shaft (2) in size is formed in the second deflector rod (9);
a second cylindrical boss (92) for assisting in pressing the semicircular surface (81) of the first deflector rod (8) is arranged on the second deflector rod (9);
the first deflector rod (8) comprises a semicircular surface (81) and a horizontal surface (82), and an integrated structure is formed between the semicircular surface (81) and the horizontal surface (82);
a first cylindrical boss (83) is arranged on the first deflector rod (8), and a square boss (84) is arranged on the first deflector rod (8) and is tightly attached to the first cylindrical boss (83);
a third through hole (101) matched with the main shaft (2) in size is formed in the rotary connecting rod (10);
a third cylindrical boss (102) for limiting and a fourth cylindrical boss (103) used for being connected with the first deflector rod (8) are also arranged on the rotary connecting rod (10);
a square through groove (31) matched with the square boss (84) is formed in the auxiliary connecting rod (3), and a first through hole (32) is formed in the auxiliary connecting rod (3);
one end of the main shaft (2) close to the second deflector rod (9) is provided with a limiting boss (21), and the limiting boss (21) is provided with a countershaft (11).
2. The application method of the auxiliary contact structure for the universal circuit breaker is based on the claim 1, and is characterized in that: the circuit breaker comprises an auxiliary contact structure for controlling the opening and closing actions of the circuit breaker in a linkage way:
the auxiliary contact structure is used for controlling the opening action of the breaker in a linkage way, and the method comprises the following steps:
(A1) Firstly, the main shaft (2) is rotated clockwise, and simultaneously, the second deflector rod (9) rigidly connected with the main shaft (2) acts in the same direction;
(B1) Then, the second cylindrical boss (92) of the second deflector rod (9) presses the semicircular surface (81) of the first deflector rod (8), so that the first deflector rod (8) rotates anticlockwise around the first cylindrical boss (83) of the rotation center, the first deflector rod (8) rotates and simultaneously drives the rigidly connected auxiliary connecting rod (3) to rotate in the same direction, and the first umbrella-shaped connecting rod (4) and the second umbrella-shaped connecting rod (5) also rotate in the same direction;
(C1) Next, the reed of the micro switch (7) is shifted in the direction opposite to the paper surface by the horizontal surface (82) of the first deflector rod (8), so that the micro switch (7) is switched;
(D1) Finally, when a limit boss (21) on the main shaft (2) is in contact with the auxiliary shaft (11) but the reverse swing of the main shaft (2) does not occur, the rotation centers of the first deflector rod (8), the first umbrella-shaped connecting rod (4) and the second umbrella-shaped connecting rod (5) pass through dead points of the three parts on the same straight line, the position of the first deflector rod (8) is fixed and does not rotate along with the metal collision swing of the main shaft (2), and the micro switch (7) completes switching, namely the breaker completes the brake separating action;
the auxiliary contact structure linkage control circuit breaker closing action comprises the following steps:
(A2) Firstly, the main shaft (2) is rotated anticlockwise, and simultaneously, the second deflector rod (9) rigidly connected with the main shaft (2) acts in the same direction;
(B2) When the second deflector rod (9) is contacted with the third cylindrical boss (102) of the rotary connecting rod (10), the rotary connecting rod (10) is driven to rotate anticlockwise around the main shaft (2);
(C2) The fourth cylindrical boss (103) is contacted with the rear part of the semicircular surface (81) of the first deflector rod (8) to drive the first deflector rod (8) to rotate clockwise around the rotation center of the first deflector rod, so that the horizontal surface (82) of the first deflector rod (8) releases the reed of the micro switch (7), and the micro switch (7) is switched to another state;
(D2) And finally, after the first deflector rod (8), the first umbrella-shaped connecting rod (4) and the second umbrella-shaped connecting rod (5) pass through dead points, the position of the first deflector rod (8) is fixed, a certain gap is reserved between the fourth cylindrical boss (103) of the rotary connecting rod (10) and the rear aspect of the semicircular surface of the first deflector rod (8), and at the moment, the micro switch (7) is successfully switched to another state, namely the circuit breaker completes the closing action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110448042.1A CN113192803B (en) | 2021-04-25 | 2021-04-25 | Auxiliary contact structure for universal circuit breaker and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110448042.1A CN113192803B (en) | 2021-04-25 | 2021-04-25 | Auxiliary contact structure for universal circuit breaker and application method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113192803A CN113192803A (en) | 2021-07-30 |
| CN113192803B true CN113192803B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110448042.1A Active CN113192803B (en) | 2021-04-25 | 2021-04-25 | Auxiliary contact structure for universal circuit breaker and application method thereof |
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| Country | Link |
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| CN (1) | CN113192803B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086694A1 (en) * | 2011-11-21 | 2013-05-23 | Siemens Aktiengesellschaft | Circuit-breaker for medium-voltage switchgear |
| CN203339085U (en) * | 2013-08-01 | 2013-12-11 | 德力西电气有限公司 | Frame-type circuit breaker auxiliary switch |
| CN108493064A (en) * | 2018-03-30 | 2018-09-04 | 上海良信电器股份有限公司 | A kind of breaker bounce-proof auxiliary contact |
-
2021
- 2021-04-25 CN CN202110448042.1A patent/CN113192803B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086694A1 (en) * | 2011-11-21 | 2013-05-23 | Siemens Aktiengesellschaft | Circuit-breaker for medium-voltage switchgear |
| CN203339085U (en) * | 2013-08-01 | 2013-12-11 | 德力西电气有限公司 | Frame-type circuit breaker auxiliary switch |
| CN108493064A (en) * | 2018-03-30 | 2018-09-04 | 上海良信电器股份有限公司 | A kind of breaker bounce-proof auxiliary contact |
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| Publication number | Publication date |
|---|---|
| CN113192803A (en) | 2021-07-30 |
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Effective date of registration: 20220706 Address after: 212000 No. 1 Nan Zi Road, Yangzhong science and Technology Park, Zhenjiang, Jiangsu Applicant after: Westinghouse switchgear (Jiangsu) Co.,Ltd. Address before: 212200 No.1, Nanzi Road, Xinba Science Park, Yangzhong City, Zhenjiang City, Jiangsu Province Applicant before: Westinghouse low voltage switchgear (Zhenjiang) Co.,Ltd. |
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