CN111446093B - Locking structure and circuit breaker with same - Google Patents
Locking structure and circuit breaker with same Download PDFInfo
- Publication number
- CN111446093B CN111446093B CN202010366288.XA CN202010366288A CN111446093B CN 111446093 B CN111446093 B CN 111446093B CN 202010366288 A CN202010366288 A CN 202010366288A CN 111446093 B CN111446093 B CN 111446093B
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- China
- Prior art keywords
- locking
- circuit breaker
- unlocking
- driving
- piece
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating 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
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a locking structure and a circuit breaker with the same, and belongs to the technical field of circuit breakers, wherein the locking structure comprises: the locking piece is provided with a locking end and an unlocking execution end; the locking member is adapted to be rotatably disposed within a housing of the electrical switching apparatus; when the locking piece is in the locking position, the locking end extends out of the shell of the electric switch device; at this time, the unlocking execution end is blocked on a brake-separating execution path of an operating mechanism of the electric switch device; when the operating mechanism of the electric switching device performs a switching-off operation, the unlocking execution end of the locking piece is driven so as to enable the locking end of the locking piece to retract into the shell of the electric switching device; after the locking structure is arranged in the electric switch device, unlocking is realized by executing the opening of the operating mechanism, so that the danger of electrified disassembly of the electric switch device can be avoided.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a locking structure and a circuit breaker with the same.
Background
A circuit breaker is a switching device capable of carrying and opening a current under an abnormal circuit condition for a prescribed time, and has a moving contact and a stationary contact capable of performing an on-off operation inside the circuit breaker, wherein the moving contact is driven by an operating mechanism.
The plug-in circuit breaker in the circuit breaker is widely applied, the plug-in circuit breaker is installed by being inserted into the cabinet, after the circuit breaker is inserted into the cabinet, the conducting plate in the circuit breaker is connected with the power supply in the cabinet, the circuit breaker is internally provided with a moving contact and a fixed contact, and when the moving contact and the fixed contact are in contact, a load connected with the circuit breaker can be supplied with power.
When the circuit breaker needs to be taken out from the cabinet, in order to avoid live taking out of the circuit breaker, a moving contact and a fixed contact in the circuit breaker are ensured to be in an open state.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that in the prior art, in the process of taking out the cabinet, a moving contact and a fixed contact in the circuit breaker are possibly in a connection state, so as to provide a locking structure.
The invention also provides a circuit breaker with the locking structure.
The invention provides a locking structure, comprising:
The locking piece is provided with a locking end and an unlocking execution end; the locking member is adapted to be rotatably disposed within a housing of the electrical switching apparatus;
When the locking piece is in the locking position, the locking end extends out of the shell of the electric switch device; at this time, the unlocking execution end is blocked on a brake-separating execution path of an operating mechanism of the electric switch device;
when the operating mechanism of the electric switching device performs a switching-off operation, the unlocking execution end of the locking piece is driven so as to retract the locking end of the locking piece into the housing of the electric switching device.
Preferably, the locking piece is also provided with a driving end; the locking piece is not in a locking position state, and the driving end has an intersection area in a moving area in a shell of the electric switching device and a moving area of a lock catch of an operating mechanism of the electric switching device;
Preferably, the lock catch of the operating mechanism of the electric switch device has an unlocking direction; in the retracted state of the locking element into the housing of the electrical switching apparatus, the drive end of the locking element is in contact with the catch, so that the catch can be moved in the unlocking direction.
Preferably, the locking member has a first extension arm and a second extension arm disposed at an angle, the first extension arm is formed with the unlocking execution end, and the second extension arm is formed with the driving end and the locking end.
Preferably, a locking piece is provided above the locking end, and the locking piece is connected to a locking return elastic member, and the locking return elastic member has a biasing force for keeping the locking piece in the locking position.
Preferably, the plane formed by the front side wall of the locking end of the locking piece is vertical or the bottom end is inclined forward when the locking end extends out of the shell of the electric switch device.
Preferably, the rear side of the locking end of the locking element has a contact platform adapted to be snapped into engagement with the housing of the electrical switching apparatus.
The circuit breaker provided by the invention comprises any one of the locking structures and further comprises:
a front end driving member rotatably installed in a housing of the circuit breaker, having a through hole adapted to pass through the first link; the first link is inserted into the through hole of the front end driving member, and the protruding end is adapted to contact with the unlocking execution end of the locking member of the locking structure.
Preferably, the front end driving member is connected with the button of the circuit breaker through a first link, and a through hole of the front end driving member for passing through the first link is a long hole.
The circuit breaker provided by the invention comprises any one of the locking structures and further comprises:
The lock catch is arranged in the shell of the circuit breaker in a relatively rotatable manner, and the movable contact and the fixed contact in the circuit breaker can be disconnected by rotating to the unhooking position;
The lock catch is provided with a matched operation end extending towards the direction of the locking structure, and the matched operation end is suitable for being driven by the driving end of the locking structure to enable the lock catch to rotate towards the unhooking position.
Preferably, the method further comprises:
a front end driving member rotatably installed in a housing of the circuit breaker, having a through hole adapted to pass through the first link; the first link is inserted into the through hole of the front end driving member, and the protruding end is adapted to contact with the unlocking execution end of the locking member of the locking structure.
The technical scheme of the invention has the following advantages:
1. the locking structure is arranged in the electric switch device, and can be switched on after the electric switch device is inserted into the cabinet, and a locking piece of the locking structure is provided with a locking end extending out of a shell of the electric switch device and is used for preventing the electric switch device from being pulled out of the cabinet through the locking end;
when the electric switch device is pulled out of the cabinet, the switch needs to be opened firstly, and then the locking end of the locking piece is retracted into the shell of the electric switch device, however, when the operation is carried out, an operator forgets to perform the switch opening operation, and at the moment, electrified disassembly occurs, so that arc discharge danger is easy to occur; when the locking structure is adopted, the operation of retracting the locking end of the locking piece into the shell of the electric switch device is realized by executing the opening of the operating mechanism, namely, the unlocking is performed when the opening operation is performed, so that the problem of forgetting the score brake is avoided, and the danger of electrified disassembly is avoided.
2. According to the locking structure provided by the invention, the driving end is further arranged on the locking piece, when the locking piece is not in the locking position state, the driving end is provided with an intersection area in a moving area in the shell of the electric switching device and a moving area of the lock catch of the operating mechanism of the electric switching device, when the locking piece is in the locking state, the locking piece is retracted in the shell, the driving end of the locking piece can prevent the lock catch of the operating mechanism from moving towards the closing direction, and specifically: when the electric switch device is not assembled in place, the locking end of the locking piece is positioned in the intersection area in the shell of the electric switch device, at the moment, the driving end of the locking piece is blocked on the execution path of the lock catch, and the lock catch cannot conduct closing operation, so that the situation that the electric switch device cannot be closed under the condition of being assembled in place can be ensured.
The lock catch of the operating mechanism of the electric switching device is provided with an unlocking direction, when the lock catch is positioned at a position for closing, the driving end of the locking piece is contacted with the lock catch in the process that the locking piece is retracted towards the inside of the shell of the electric switching device, so that the lock catch can be moved and unlocked towards the unlocking direction, and the electrified assembly of the electric switching device can be avoided through the driving end of the locking piece; in the process of inserting the electric switching device into the cabinet, if the operating mechanism of the electric switching device is in a closing state, the locking end of the locking piece is pushed back into the lock shell of the electric switching device by the cabinet in the process of inserting the electric switching device into the cabinet, at the moment, the driving end of the locking piece can stir the lock catch in the electric switching device, so that the lock catch can be unhooked, and the inside of the lock catch is in a separating brake state when the electric switching device is assembled.
3. The locking structure provided by the invention is characterized in that a plane is formed on the front side wall of the locking end of the locking piece and is used for being matched with the cabinet, and when the locking end of the locking piece extends out of the shell of the electric switch device, the plane is used for being clamped on the cabinet, so that the locking of the electric switch device is kept.
4. The circuit breaker provided by the invention is provided with the front end driving piece, the front end driving piece is connected with the button through the first connecting rod, and after one end of the first connecting rod is inserted into the front end driving piece, the end part of the first connecting rod can be used for driving the unlocking execution end of the locking piece of the locking structure, so that when the unlocking execution end is blocked on the moving path of the first connecting rod, the push button is prevented from being pulled out, and the button can be kept in a state of not being pulled out.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a locking member of the locking structure of the present invention.
Fig. 2 is a schematic view of another angle of the locking member of fig. 1.
Fig. 3 is a schematic perspective view of the locking mechanism of the present invention in a locked position within a circuit breaker.
Fig. 4 is a partial enlarged view at a shown in fig. 3.
Fig. 5 is a schematic perspective view showing the locking structure of the present invention in an unlocking position in a circuit breaker.
Fig. 6 is a partial enlarged view at B shown in fig. 5.
Reference numerals illustrate:
1. A button; 2. a locking member; 3. locking the reset elastic piece; 4. a first link; 5. a front end driver; 6. a second link; 7. locking; 8. matching the operation end; 9. a stationary contact; 10. a moving contact; 11. unlocking an execution end; 12. a locking end; 13. a driving end; 14. a clamping table; 15. a front sidewall; 16. contact the platform.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The present embodiment provides a circuit breaker having a locking structure inside for locking the circuit breaker in a cabinet.
As shown in fig. 1 and 2, the locking structure includes: the locking piece 2, the locking piece 2 rotates and sets up in the casing of circuit breaker, the locking piece 2 has the first extension arm and the second extension arm that set up at an angle, the rotation route of first extension arm with the rotation route of second extension arm is located different planes.
As shown in fig. 1 and 2, the first extension arm is formed with an unlocking actuating end 11, and the second extension arm is formed with a driving end 13 and a locking end 12. The driving end 13 is used for extending towards the direction of the operating mechanism of the circuit breaker, the locking end 12 is used for extending out of the shell of the circuit breaker, and the unlocking execution end 11 is used for extending towards the direction of the operating mechanism of the circuit breaker.
As shown in fig. 1 and 2, a clamping table 14 for connecting with the locking reset elastic member 3 provided in the circuit breaker is provided above the locking end 12, and the clamping table 14 and the driving end 13 are arranged in parallel in the thickness direction of the second extension arm. The lock return elastic member 3 is connected to the lock member 2 and has a biasing force for holding the lock member 2 in the lock position, and the lock return elastic member 3 is a torsion spring.
As shown in fig. 1 and 2, a locking reset elastic member 3 is further disposed in the circuit breaker, the locking reset elastic member 3 is selected as a torsion spring, and a torsion arm of the torsion spring abuts against the clamping table 14, so that the locking end 12 of the locking member 2 extends out of the circuit breaker housing.
As shown in fig. 1, the plane formed by the front side wall 15 of the locking end 12 of the locking member 2 is vertical when the locking end 12 extends out of the casing of the circuit breaker; in addition, as an alternative embodiment, the plane surface may also be in a state in which the bottom end is inclined forward.
As shown in fig. 2, the rear side of the locking end 12 of the locking element 2 has a contact platform 16 which is adapted to be snapped into engagement with the housing of the electrical switching apparatus, by means of which contact platform 16 the locking element 2 is blocked from protruding entirely out of the housing of the circuit breaker.
As shown in fig. 3 and 4, the circuit breaker further includes: a lock 7 and a front end driver 5. The lock catch 7 is rotatably arranged in the shell and used for enabling the moving contact and the fixed contact in the shell to be contacted and locked at a closing position through rotation, the lock catch 7 is driven by a jump buckle, and the jump buckle is connected with the front end driving piece 5 through a second connecting rod 6; when the switch-on is carried out, the front end driving piece 5 drives the jump button to rotate through the second connecting rod 6, the jump button pushes the lock catch 7 to rotate in a linkage way, when the jump button rotates to a certain distance, the jump button and the lock catch 7 are positioned at a rotation dead point, at the moment, the lock catch 7 is locked and can not rotate reversely, and a moving contact and a fixed contact in the shell are contacted and locked under the action of the lock catch 7. The latch 7 has a mating operation end 8 extending toward the direction of the locking structure, and when the latch 7 rotates, the mating operation end 8 moves along an execution path having an intersection area with a movement path of the driving end 13 of the locking member, and when the locking member 2 is driven to rotate toward the direction of releasing the locking of the circuit breaker, the driving end 13 of the locking member 2 can drive the mating operation end 8 of the latch 7 to rotate the latch 7 in the direction of executing unhooking.
As shown in fig. 3 and 4, the front end driving member 5 is rotatably installed in the casing of the circuit breaker, the front end driving member 5 is connected with the button 1 through the first link 4, and the front end driving member 5 has a through hole adapted to pass through the first link 4, and the through hole is a long hole; after the first link 4 is inserted into the through hole of the front end driving member 5, the protruding end of the first link 4 is adapted to contact with the unlock execution end 11 of the locking member 2 of the locking structure, thereby serving to drive the locking member 2 to rotate toward the unlocking position.
As shown in fig. 3 and 4, the front end driving member 5 is connected to the lock catch 7 through a second connecting rod 6, and is used for driving the lock catch 7 to rotate towards a direction of making the moving contact and the fixed contact.
As shown in fig. 4, when the locking member 2 is in the locking position, the locking end 12 of the locking member 2 protrudes out of the housing of the electrical switching apparatus, so that the electrical switching apparatus is locked in the cabinet to be unable to be withdrawn; at this time, the moving contact and the fixed contact in the circuit breaker can be contacted, and the mating operation end 8 of the lock catch 7 is opposite to the driving end 13 of the locking piece 2.
As shown in fig. 4, when the unlocking performing end 11 of the locking member 2 is driven by the first link 4, the locking end 12 of the locking member 2 is retracted into the housing of the circuit breaker, and at the same time, the locking member 2 is rotated against the biasing force of the locking return elastic member 3, so that the driving end 13 of the locking member 2 is moved toward the direction of the mating operating end 8 of the latch 7, thereby driving the latch 7 to perform the unhooking.
As shown in fig. 5 and 6, when the circuit breaker needs to be removed from the cabinet, the locking end 12 of the locking member 2 is retracted into the housing of the circuit breaker. The specific operation is as follows: pulling the push button 1 outwards, the first link 4 pulls the front end driver 5 to rotate, and at the same time, the insertion end of the first link 4 inserted into the front end driver 5 drives the unlocking execution end 11 of the locking member 2, so that the locking member 2 rotates toward the unlocking position, i.e., the locking end 12 of the locking member 2 is retracted into the housing of the circuit breaker as shown in fig. 6. During the process of rotating the locking piece 2 towards the unlocking position, the driving end 13 of the locking piece 2 toggles the matched operation end 8 of the lock catch 7 to enable the lock catch 7 to rotate, so that the contact between the moving contact and the fixed contact in the circuit breaker is released.
Application method and principle
As shown in fig. 3 and fig. 4, when the circuit breaker is installed in the cabinet, the locking member 2 is in a locking position, that is, the locking end 12 extends out of the casing of the circuit breaker and extends into the groove of the cabinet, so as to fix the circuit breaker in the groove, and the driving end 13 is far away from the execution path of the mating operation end 8 of the lock catch 7, so that the lock catch 7 is not influenced to drive the moving contact 10 and the fixed contact 9 to be contacted and disconnected.
As shown in fig. 5 and 6, when the circuit breaker needs to be taken out from the cabinet, the button 1 can be pulled, so that the button 1 moves forward, the switch pulls the first connecting rod 4 to move forward, and meanwhile, the front driving device is driven to rotate, and the front driving device rotates to drive the second connecting rod 6 to move, so that the lock catch 7 is driven to rotate, and the movable contact 10 and the fixed contact 9 are driven to be separated; meanwhile, the extending end of the first connecting rod 4 is abutted against the releasing execution end to drive the locking piece 2 to rotate around the shaft, so that the locking piece 2 is retracted into the shell of the circuit breaker to perform contact locking on the circuit breaker; in the process of rotating the locking piece 2, the driving end 13 also touches the matched operation end 8 of the lock catch 7, provides a driving force for the lock catch 7, and drives the lock catch 7 to drive the movable contact 10 and the fixed contact 9 to be separated; the arrangement of the structure ensures that the circuit breaker is not in a closing state when the circuit breaker is taken out of the cabinet, and ensures the safety of equipment and personnel.
Meanwhile, if the lock catch 7 cannot be directly controlled to rotate through the switch to drive the moving contact 10 and the fixed contact 9 to separate, the driving end 13 of the locking piece 2 can drive the lock catch 7 to drive the fixed contact 9 and the moving contact 10 to separate, so that double guarantees are provided for breaking the breaker under the crisis condition.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. A locking arrangement, comprising:
A locking member (2) having a locking end (12) and an unlocking execution end (11); the locking member (2) is adapted to be rotatably arranged in a housing of an electrical switching apparatus;
When the locking member (2) is in a locked position, the locking end (12) protrudes outside the housing of the electrical switching apparatus; at this time, the unlocking execution end (11) is blocked on a brake-separating execution path of an operating mechanism of the electric switching device;
When an operating mechanism of the electric switching device performs a switching-off operation, an unlocking execution end (11) of the locking piece (2) is driven so as to retract a locking end (12) of the locking piece (2) into a housing of the electric switching device;
the locking piece (2) is also provided with a driving end (13); when the locking piece is not in the locking position state, the moving area of the driving end (13) in the shell of the electric switch device and the moving area of the lock catch of the operating mechanism of the electric switch device are provided with an intersection area;
The lock catch of the operating mechanism of the electric switch device has an unlocking direction; in the retracted state of the locking element (2) in the housing of the electrical switching apparatus, the drive end (13) of the locking element (2) is in contact with the catch, so that the catch can be moved in the unlocking direction.
2. The locking structure according to claim 1, characterized in that the locking member (2) has a first extension arm and a second extension arm arranged at an angle, the first extension arm being formed with the unlocking actuation end (11) and the second extension arm being formed with the driving end (13) and the locking end (12).
3. A locking arrangement according to claim 2, characterized in that above the locking end (12) there is a catch (14) for connection with a locking return spring (3), the locking return spring (3) having a biasing force which keeps the locking element (2) in the locking position.
4. A locking arrangement according to any one of claims 1-3, characterized in that the plane formed by the front side wall of the locking end (12) of the locking member (2) is in a vertical or bottom end forward inclined condition when the locking end (12) protrudes out of the housing of the electrical switching apparatus.
5. A circuit breaker comprising the locking structure of any one of claims 1-4, further comprising:
A front end driving member (5) rotatably installed in a housing of the circuit breaker, having a through hole adapted to pass through the first link (4); after the first connecting rod (4) is inserted into the through hole of the front end driving piece (5), the extending end is suitable for contacting with the unlocking execution end (11) of the locking piece (2) of the locking structure.
6. Circuit breaker according to claim 5, characterized in that the front end driver (5) is connected to the push button (1) of the circuit breaker by a first link (4), the through hole of the front end driver (5) for passing through the first link (4) being a long hole.
7. The circuit breaker according to claim 5 or 6, further comprising:
the lock catch (7) is arranged in the shell of the circuit breaker in a relatively rotatable manner, and the movable contact and the fixed contact in the circuit breaker can be disconnected by rotating to the unhooking position;
the shackle (7) has a cooperating end (8) extending in the direction of the locking structure, the cooperating end (8) being adapted to be driven by a driving end (13) of the locking structure for rotating the shackle (7) towards the unhooked position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366288.XA CN111446093B (en) | 2020-04-30 | 2020-04-30 | Locking structure and circuit breaker with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366288.XA CN111446093B (en) | 2020-04-30 | 2020-04-30 | Locking structure and circuit breaker with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111446093A CN111446093A (en) | 2020-07-24 |
| CN111446093B true CN111446093B (en) | 2024-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010366288.XA Active CN111446093B (en) | 2020-04-30 | 2020-04-30 | Locking structure and circuit breaker with same |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068249B (en) * | 2020-07-29 | 2024-11-22 | 上海良信电器股份有限公司 | Torsion spring type mounting mechanism for plug-in circuit breaker |
| CN111968891B (en) * | 2020-08-17 | 2022-11-04 | 浙江思创电力科技股份有限公司 | Locking device and circuit breaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211628928U (en) * | 2020-04-30 | 2020-10-02 | 浙江天正电气股份有限公司 | Locking structure and circuit breaker with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733264A (en) * | 2015-03-16 | 2015-06-24 | 温州高能电气有限公司 | Miniature circuit breaker |
| CN109585233B (en) * | 2018-12-28 | 2024-05-14 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211628928U (en) * | 2020-04-30 | 2020-10-02 | 浙江天正电气股份有限公司 | Locking structure and circuit breaker with same |
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