CN111740337A - Circuit breaker binding post locking and unlocking mechanism - Google Patents
Circuit breaker binding post locking and unlocking mechanism Download PDFInfo
- Publication number
- CN111740337A CN111740337A CN201910229551.8A CN201910229551A CN111740337A CN 111740337 A CN111740337 A CN 111740337A CN 201910229551 A CN201910229551 A CN 201910229551A CN 111740337 A CN111740337 A CN 111740337A
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- CN
- China
- Prior art keywords
- wiring terminal
- plate
- guide
- locking
- circuit breaker
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- 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
- H01H71/08—Terminals; Connections
Abstract
The utility model provides a circuit breaker binding post locking and unlocking mechanism, it includes body wiring terminal subassembly (1) and drawer base wiring terminal subassembly (2), the break-make of circuit breaker is realized with the separation to the contact of body wiring terminal subassembly (1) and drawer base wiring terminal subassembly (2), its characterized in that: the side end of the body wiring terminal assembly (1) is provided with a side plate (3), a locking mechanism (4) is arranged between the body wiring terminal assembly (1) and the side plate (3), an unlocking structure (201) is arranged on the drawer base wiring terminal assembly (2), and the side plate (3) can drive the body wiring terminal assembly (1) to move together by utilizing the locking structure (4) in the process of moving towards the direction of the drawer base wiring terminal assembly (2) so as to realize the contact between the body wiring terminal assembly (1) and the drawer base wiring terminal assembly (2).
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a locking and unlocking mechanism for a wiring terminal of a circuit breaker.
Background
The universal circuit breaker is an important device in a power transmission and distribution system, plays a role in connecting normal working current and breaking fault current in a circuit, and has the functions of overload, undervoltage, short-circuit protection and the like. The universal circuit breaker can be divided into a fixed structure and a drawer structure. The withdrawable circuit-breaker and the fixed circuit-breaker have similar terminals. The drawer type circuit breaker can be divided into a drawer seat and a body, separation can be achieved, the processes of shaking in and shaking out can be divided into three positions of disconnection, test and connection, the auxiliary circuit wiring terminals also need to be divided into the body wiring terminals and the drawer seat wiring terminals, and the body wiring terminals shake in and out along with the drawer seat to achieve disconnection and connection. The existing traditional connecting terminal of the circuit breaker drawer base is generally fixed on a beam of the drawer base by a screw or a buckle, and the connecting terminal is disconnected and connected by adopting a direct insertion mode in the shaking-in and shaking-out process of the body. However, the connecting part of the traditional structure has long stroke and large metal consumption, and the connecting terminal is easy to turn over, or the connecting terminal is not smoothly shaken in or out due to uneven stress in the moving process.
Chinese patent application No. 201680028262.6 discloses a secondary disconnect assembly for an electrical switching apparatus. The secondary disconnect assembly includes a terminal block assembly including a mounting member having a plurality of protrusions, and a cradle assembly coupled to the mounting member and movable between a plurality of positions relative to the mounting member. The bracket assembly includes a bracket housing and an inner bracket movably disposed within the bracket housing. The protrusion aligns and guides the inner bracket relative to the mounting member. When the bracket assembly is disposed in a first predetermined one of the positions, the plurality of protrusions engage and lock the inner bracket to limit movement of the inner bracket relative to the mounting member. The plurality of protrusions release the inner carriage to move independently relative to the mounting member when the inner carriage moves toward a second predetermined one of the positions. According to the technical scheme, the shaking stroke of the body is short, the metal consumption is reduced, but the realization of disconnection, test and conduction positions in the process of shaking the body into the drawer seat is not reliable enough, instability is easy to occur, the control state of the drawer type circuit breaker is not clear, and safety accidents occur.
The patent of Chinese patent ZL201620056284.0 discloses a connecting terminal assembly structure of a universal circuit breaker, which comprises a drawer seat, wherein a beam is arranged between side plates at two sides of the drawer seat, a static connecting terminal is arranged on the drawer seat through the beam, the upper parts of two ends of the static connecting terminal are fixedly connected with the upper part of the beam, and the lower parts of the two ends are in limit contact connection with the lower part of the beam; the circuit breaker body is provided with a movable wiring terminal, and the circuit breaker body is driven by the rocking handle to rock in and out, so that the movable wiring terminal on the circuit breaker body is contacted with and separated from a static wiring terminal on the drawer seat. The static wiring terminal of the patent technology is installed on the drawer seat through a cross beam, the upper parts of two ends are fixedly connected, and the lower parts of the two ends are in limit contact connection, so that the assembly is convenient and the cost is low; meanwhile, the reaction force stress point of the static wiring terminal and the cross beam is changed, the moment effect is reduced, the reliability of the assembly structure is ensured, and poor contact is prevented. However, in the patent technology, the circuit breaker body is in a straight-inserting type in the shaking-in and shaking-out process, interference is easy to occur in the action process, and the circuit breaker is seriously and even damaged.
Disclosure of Invention
The invention aims to solve the technical defects that the existing drawer type circuit breaker is difficult to accurately control the disconnection, test and conduction three-position state realization process and causes potential safety hazards, and provides a circuit breaker wiring terminal locking and unlocking mechanism which is particularly suitable for the drawer type circuit breaker.
Technical scheme
In order to achieve the technical purpose, the invention provides a circuit breaker wiring terminal locking and unlocking mechanism, which comprises a body wiring terminal assembly and a drawer base wiring terminal assembly, wherein the contact and separation of the body wiring terminal assembly and the drawer base wiring terminal assembly realize the on-off of a circuit breaker, and the mechanism is characterized in that: the side end of the body wiring terminal assembly is provided with a side plate, a locking mechanism is arranged between the body wiring terminal assembly and the side plate, an unlocking structure is arranged on the drawer base wiring terminal assembly, the side plate can drive the body wiring terminal assembly to move together by utilizing the locking structure in the process of moving towards the direction of the drawer base wiring terminal assembly so as to realize the contact between the body wiring terminal assembly and the drawer base wiring terminal assembly, the side plate drives the body wiring terminal assembly to move together, the locking structure can be unlocked by the unlocking structure so that the side plate is separated from the body wiring terminal assembly, and the side plate can drive the body wiring terminal assembly to be separated from the drawer base wiring terminal assembly in the process of moving away from the direction of the drawer base wiring terminal assembly;
the locking structure comprises a hanging plate, the hanging plate is installed on a side plate through a first shaft, the hanging plate can wind the first shaft to rotate, a limiting shaft is arranged on the side plate, the limiting shaft extends into a limiting groove hole in the hanging plate to limit the distance of the hanging plate around the first shaft to rotate, a hook is arranged at the front end of the hanging plate, a boss structure corresponding to the hook is arranged on a body wiring terminal assembly, a reset spring is connected to the tail of the hanging plate, one end of the reset spring is connected to the hanging plate, the other end of the reset spring is connected to the side plate, a first roller is further arranged at the tail of the hanging plate, and the first roller corresponds to the unlocking structure.
Furthermore, the unlocking structure comprises an unlocking plate on a terminal mounting bracket in the drawer base wiring terminal assembly, and the unlocking plate can push the roller to enable the hanging plate to rotate around the shaft in the process that the locking structure moves towards the drawer base wiring terminal assembly.
Furthermore, a motion guide slot hole is formed in the side plate, a second roller is arranged on a base in the body wiring terminal assembly and extends into the motion guide slot hole, a second shaft is further arranged on the side plate, one end of the spring is connected with the second shaft, and the other end of the spring is connected with the convex column on the base.
Furthermore, a base in the body wiring terminal assembly is provided with a guide convex column and a guide block, and a terminal mounting bracket in the drawer base wiring terminal assembly is provided with a guide cavity and a guide groove corresponding to the guide convex column 102c and the guide block.
Furthermore, the motion guide slotted holes are kidney-shaped long holes, the number of the motion guide slotted holes is 2, and the motion guide slotted holes are parallel to each other in the horizontal direction.
Further, the body wiring terminal assembly comprises a base and an cover plate, an installation block is installed in the containing cavity on the base, the cover plate is covered with a sealing cover, a clamping hook is arranged on the cover plate, a clamping table corresponding to the clamping hook is arranged on the base, a first guide hook plate is further arranged on the installation block, and a first guide cavity corresponding to the first guide hook plate is arranged on the base.
Furthermore, the body wiring terminal assembly comprises a contact pin, and a plurality of wiring terminal pieces in the drawer base wiring terminal assembly are provided with elastic contact pieces which are in plug-in fit with the contact pin.
Furthermore, a second guide hook plate is arranged on the wiring terminal piece, and a second guide cavity corresponding to the second guide hook plate is arranged on the terminal mounting bracket.
Further, the boss structure comprises a bottom block, and the hook can be hung on a hanging block on the bottom block.
Advantageous effects
The invention provides a circuit breaker wiring terminal locking and unlocking mechanism, which is particularly suitable for drawer type circuit breakers, and achieves the technical purposes of short stroke, metal conductive material saving, stable terminal running state, no overturn and uniform stress and smooth running in the shaking process of a body by utilizing the locking and unlocking mechanism.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is an exploded view of a body terminal assembly according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a locking structure in an embodiment of the present invention.
Fig. 4 is an exploded view of a terminal assembly of a drawer base according to an embodiment of the present invention.
Fig. 5 is a schematic view of the mounting structure of the spring in the embodiment of the present invention.
Fig. 6 is a schematic structural view of a terminal plate according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of the connection of the terminal plate and the pin in the embodiment of the invention.
Fig. 8 is a structural schematic view of a locking structure in a locked state in an embodiment of the present invention.
FIG. 9 is a first schematic structural diagram of a hanging plate in the embodiment of the invention.
FIG. 10 is a second structural illustration of the hanging plate in the embodiment of the invention.
FIG. 11 is a schematic view of the position of the motion guide slot in an embodiment of the present invention.
Fig. 12 is a schematic structural view of a base in an embodiment of the present invention.
Fig. 13 is a schematic view of the structure of a terminal mounting bracket in an embodiment of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in the attached figure 1, the locking and unlocking mechanism for the circuit breaker wiring terminal comprises a body wiring terminal assembly 1 and a drawer base wiring terminal assembly 2, wherein the body wiring terminal assembly 1 and the drawer base wiring terminal assembly 2 are contacted and separated to realize the on-off of the circuit breaker, two side ends of the body wiring terminal assembly 1 are provided with side plates 3, a locking mechanism 4 is arranged between the body wiring terminal assembly 1 and the side plates 3, an unlocking structure 201 is arranged on the drawer base wiring terminal assembly 2, the side plates 3 can drive the body wiring terminal assembly 1 to move together by utilizing the locking structures 4 in the process of moving towards the drawer base wiring terminal assembly 2 to realize the contact of the body wiring terminal assembly 1 and the drawer base wiring terminal assembly 2, and the side plates 3 drive the body wiring terminal assembly 1 to move together, the locking structure 4 can be unlocked by the unlocking structure 201 to separate the side plate 3 from the body terminal assembly 1, and the side plate 3 can drive the body terminal assembly 1 to separate from the drawer base terminal assembly 2 in the process of moving away from the drawer base terminal assembly 2;
to further explain the structure and the function of the present embodiment in detail, in order to realize the reliable and stable installation of the body terminal assembly 1, as shown in fig. 2 and 12, the body terminal assembly 1 includes a base 102 and a cover plate 103, an installation block 104 is installed in an accommodation cavity 102d of the base 102 and is covered by the cover plate 103, a hook 103a is disposed on the cover plate 103, a clamping platform 102e corresponding to the hook 103a is disposed on the base 102, a first guide hook plate 103b is further disposed on the installation block 104, and a first guide cavity 102f corresponding to the first guide hook plate 103b is disposed on the base 102.
As shown in fig. 2 and 7, the body terminal assembly 1 includes a pin 105, and as shown in fig. 6, a plurality of terminal strips 203 in the drawer base terminal assembly 2 are provided with elastic contact strips 203a that are in plug-in fit with the pin 105 to electrically connect the body terminal assembly 1 and the drawer base terminal assembly 2. As shown in fig. 4, a second guiding hook plate 203b is disposed on the connection terminal plate 203, and as shown in fig. 13, a second guiding cavity 202c corresponding to the second guiding hook plate 203b is disposed on the terminal mounting bracket 202 to achieve reliable and stable mounting of the connection terminal assembly 2 of the drawer base.
Meanwhile, in order to ensure that the body terminal assembly 1 can stably move toward the drawer base terminal assembly 2, as shown in fig. 2 and 4, the base 102 of the body terminal assembly 1 is provided with a guide post 102c and a guide block 102c ', and the terminal mounting bracket 202 of the drawer base terminal assembly 2 is provided with a guide cavity 202b and a guide groove 202b ' corresponding to the guide post 102c and the guide block 102c '. As shown in fig. 3, 8, 9 and 10, the locking structure 4 includes a hanging plate 401, the hanging plate 401 is mounted on the side plate 3 through a first shaft 402, the hanging plate 401 can rotate around the first shaft 402, the side plate 3 is provided with a limit shaft 301, the limit shaft 301 extends into a limit slot 401a on the hanging plate 401 to limit the rotating stroke of the hanging plate 401 around the first shaft 402, the limit slot 401a is an arc slot, the front end of the hanging plate 401 is provided with a hook 401b, the body wiring terminal assembly 1 is provided with a boss structure 101 corresponding to the hook 401b, the boss structure 101 includes a bottom block 101a, the hook 401b can be hung on a hanging block 101b on the bottom block 101a, the tail of the hanging plate 401 is connected with a return spring 403, one end of the return spring 403 is connected to the hanging plate 401, and the other end is connected to the side plate 3, the tail of the hanging plate 401 is further provided with a first roller 404, and the first roller 404 corresponds to the unlocking structure 201. The side plate 3 is further provided with a movement guiding slot hole 302, as shown in fig. 12, the base 102 of the body terminal assembly 1 is provided with a second roller 102a, the second roller 102a extends into the movement guiding slot hole 302, in this embodiment, the second roller 102a is installed in the installation hole 102a02 of the base by a third shaft 102a01, and the first roller 404 is installed on the hanging plate by a fourth shaft. As shown in fig. 11, the movement guide slot holes 302 are long holes having a kidney shape, and the number of the movement guide slot holes is 2, and the horizontal directions are parallel to each other, so that the side plates and the body terminal assembly 1 can be relatively stably moved. As shown in fig. 5, a second shaft 303 is further disposed on the side plate 3, one end of the spring 5 is connected to the second shaft 303, and the other end of the spring is connected to the protruding column 102b on the base 102, so that the body terminal assembly 1 can be reset when the circuit breaker body is far away from the drawer base.
The unlocking structure 201 comprises an unlocking plate 202a on a terminal mounting bracket 202 in the drawer base wiring terminal assembly 2, and the unlocking plate 202a can push a roller 404 to enable the hanging plate 401 to rotate around a shaft 402 in the process that the locking structure 4 moves towards the direction of the drawer base wiring terminal assembly 2, so that unlocking is realized.
When the withdrawable circuit-breaker is in the off position, this embodiment is in the locked state, the hook 401b can be hooked on the hanging block 101b on the bottom block 101a, one end of the return spring 403 is connected in the mounting hole on the hanging plate 401, the other end is connected on the return spring shaft on the side plate 3, the limit shaft 301 extends into the limit slot hole 401a on the hanging plate 401 to make the locking structure 4 in the stable state, when the side plate 3 moves towards the drawer base wiring terminal assembly 2 direction, the body wiring terminal assembly 1 can move together with the side plate 3 through the locking structure 4, once the roller 404 contacts the unlocking plate 202a on the terminal mounting bracket 202 in the drawer base wiring terminal assembly 2 and then continues to move, the roller 404 is unlocked by the unlocking plate 202a exerting downward force to make the hanging plate 401a 402 clockwise pin rotate around the shaft, so that the hook 401b can be separated from the hanging block 101b on the bottom block 101a to realize unlocking, at this moment, the body wiring terminal assembly 1, the drawer base wiring terminal assembly 2 and the locking structure 4 can continue to operate until reaching the conduction position. When the body terminal assembly 1 and the drawer base terminal assembly 2 need to be disconnected, the side plate 3 retracts, and the side plate drives the body terminal assembly 1 to be separated from the drawer base terminal assembly 2 by matching the second roller 102a with the movement guide slot hole 302.
The structures, ratios, sizes, quantities, and the like shown in the drawings of the embodiments of the present invention are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance. In addition, the terms such as "upper", "lower", "left", "right", "middle", "clockwise" and "counterclockwise" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the substantial changes, but also considered to be the scope of the present invention.
Claims (9)
1. The utility model provides a circuit breaker binding post locking and unlocking mechanism, it includes body wiring terminal subassembly (1) and drawer base wiring terminal subassembly (2), the break-make of circuit breaker is realized with the separation to the contact of body wiring terminal subassembly (1) and drawer base wiring terminal subassembly (2), its characterized in that: body wiring terminal subassembly (1) side is provided with curb plate (3), be provided with locking mechanical system (4) between body wiring terminal subassembly (1) and curb plate (3), be equipped with unlocking structure (201) on drawer base wiring terminal subassembly (2), curb plate (3) are towards drawer base wiring terminal subassembly (2) direction motion in-process can utilize locking structure (4) to drive body wiring terminal subassembly (1) moves the realization together body wiring terminal subassembly (1) and drawer base wiring terminal subassembly (2)'s contact, curb plate (3) drive body wiring terminal subassembly (1) in-process moves together, locking structure (4) can by unlocking structure (201) unblock makes curb plate (3) with body wiring terminal subassembly (1) separation, curb plate (3) are keeping away from drawer base wiring terminal subassembly (2) direction motion in-process can drive body wiring terminal subassembly (1) motion in-process The body wiring terminal component (1) is separated from the drawer seat wiring terminal component (2);
the locking structure (4) comprises a hanging plate (401), the hanging plate (401) is installed on the side plate (3) through a first shaft (402), the hanging plate (401) can rotate around the first shaft (402), a limiting shaft (301) is arranged on the side plate (3), the limiting shaft (301) extends into a limiting groove hole (401a) in the hanging plate (401) to limit the rotating stroke of the hanging plate (401) around the first shaft (402), a hook (401b) is arranged at the front end of the hanging plate (401), a boss structure (101) corresponding to the hook (401b) is arranged on the body wiring terminal assembly (1), a reset spring (403) is connected to the tail of the hanging plate (401), one end of the reset spring (403) is connected to the hanging plate (401), the other end of the reset spring is connected to the side plate (3), a roller (404) is further arranged at the tail of the hanging plate (401), the first roller (404) corresponds to the unlocking structure (201).
2. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: unlocking structure (201) include unlocking plate (202a) on terminal installing support (202) in drawer base wiring terminal subassembly (2), unlocking plate (202a) is in locking structure (4) orientation can promote in the motion process of drawer base wiring terminal subassembly (2) direction roller (404) make link plate (401) rotate around axle (402) thereby realize the unblock.
3. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: the wiring terminal component is characterized in that a movement guide slotted hole (302) is formed in the side plate (3), a second roller (102a) is arranged on a base (102) in the body wiring terminal component (1), the second roller (102a) extends into the movement guide slotted hole (302), a second shaft (303) is further arranged on the side plate (3), one end of the spring (5) is connected with the second shaft (303), and the other end of the spring is connected with a convex column (102b) on the base (102).
4. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: a guide convex column (102c) and a guide block (102c ') are arranged on a base (102) in the body wiring terminal assembly (1), and a guide cavity (202b) and a guide groove (202b ') corresponding to the guide convex column (102c) and the guide block (102c ') are arranged on a terminal mounting bracket (202) in the drawer base wiring terminal assembly (2).
5. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 3, wherein: the motion guide slotted holes (302) are kidney-shaped long holes, the number of the motion guide slotted holes is 2, and the motion guide slotted holes are parallel to each other in the horizontal direction.
6. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: the body wiring terminal assembly (1) comprises a base (102) and a cover plate (103), an installation block (104) is installed in an accommodating cavity (102d) in the base (102) and is covered by the cover plate (103), a clamping hook (103a) is arranged on the cover plate (103), a clamping table (102e) corresponding to the clamping hook (103a) is arranged on the base (102), a first guide hook plate (103b) is further arranged on the installation block (104), and a first guide cavity (102f) corresponding to the first guide hook plate (103b) is arranged on the base (102).
7. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: the body wiring terminal assembly (1) comprises a pin (105), and a plurality of wiring terminal pieces (203) in the drawer base wiring terminal assembly (2) are provided with elastic contact pieces (203a) which are in plugging fit with the pin (105).
8. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 7, wherein: and a second guide hook plate (203b) is arranged on the wiring terminal plate (203), and a second guide cavity (202c) corresponding to the second guide hook plate (203b) is arranged on the terminal mounting bracket (202).
9. The circuit breaker terminal locking and unlocking mechanism as claimed in claim 1, wherein: the boss structure (101) comprises a bottom block (101a), and the hook (401b) can be hung on a hanging block (101b) on the bottom block (101 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229551.8A CN111740337A (en) | 2019-03-25 | 2019-03-25 | Circuit breaker binding post locking and unlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229551.8A CN111740337A (en) | 2019-03-25 | 2019-03-25 | Circuit breaker binding post locking and unlocking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111740337A true CN111740337A (en) | 2020-10-02 |
Family
ID=72645820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910229551.8A Pending CN111740337A (en) | 2019-03-25 | 2019-03-25 | Circuit breaker binding post locking and unlocking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111740337A (en) |
-
2019
- 2019-03-25 CN CN201910229551.8A patent/CN111740337A/en active Pending
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