CN116864349A - Auxiliary device for circuit breaker - Google Patents
Auxiliary device for circuit breaker Download PDFInfo
- Publication number
- CN116864349A CN116864349A CN202310357860.XA CN202310357860A CN116864349A CN 116864349 A CN116864349 A CN 116864349A CN 202310357860 A CN202310357860 A CN 202310357860A CN 116864349 A CN116864349 A CN 116864349A
- Authority
- CN
- China
- Prior art keywords
- moving contact
- circuit breaker
- auxiliary device
- shell
- locking plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Classifications
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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
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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
- H01H71/04—Means for indicating condition of the switching device
-
- 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
Landscapes
- Breakers (AREA)
Abstract
The auxiliary device for the circuit breaker comprises a shell, wherein a spanner is arranged at the upper end of the shell, a plurality of connecting terminals are respectively arranged at two sides of the shell, two groups of moving contact mechanisms are arranged at two sides of the interior of the shell, each group of moving contact mechanisms is electrically connected with adjacent connecting terminals, a first moving contact, a second moving contact and a locking plate are coaxially and rotatably fixed in the shell, the first moving contact is hinged with a locking block, the first moving contact and the second moving contact can be in unidirectional mechanical linkage, the locking plate is connected with the spanner through a pull rod, and the locking plate is mutually abutted with the locking block; the first locking plate is fixedly provided with a deflector rod, the deflector rod can be synchronously linked with a tripping mechanism of the circuit breaker, a mounting hole is formed in the position, corresponding to the deflector rod, of the surface of the shell, and the aperture of the mounting hole is identical to that of the deflector rod.
Description
Technical Field
The present invention relates to an auxiliary device for a circuit breaker.
Background
A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time.
The main contact of the low-voltage circuit breaker is manually operated or electrically closed. After the main contact is closed, the free tripping mechanism locks the main contact at the closing position. The coil of the overcurrent release and the thermal element of the thermal release are connected in series with the main circuit, and the coil of the undervoltage release is connected in parallel with the power supply. When the circuit is short-circuited or severely overloaded, the armature of the overcurrent release is attracted to enable the free release mechanism to act, and the main contact opens the main circuit; when the circuit is overloaded, the thermal element of the thermal trip heats to bend the bimetallic strip, and the free trip mechanism is pushed to act; when the circuit is under-voltage, the armature of the under-voltage release is released, and the free release mechanism is also enabled to act. The shunt release is used for remote control, the coil is powered off during normal operation, and the start button is pressed to energize the coil when the distance control is required.
The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, automatically cutting off the circuit when serious overload or short circuit, undervoltage and other faults occur, has the functions equivalent to the combination of a fuse type switch, an over-under-heating relay and the like, does not generally need to change parts after breaking fault current, and has been widely applied.
The auxiliary device of the circuit breaker in the prior art is provided with an auxiliary alarm device, an auxiliary contact switch and the like, and can only be used for functional combination in an integrated mode, but the scheme is limited, the effect of random combination cannot be achieved, and the circuit breaker is unreliable.
Disclosure of Invention
The invention provides an auxiliary device for a circuit breaker, which can realize random combination and has high reliability.
The above object of the present invention is achieved by the following means:
the auxiliary device for the circuit breaker comprises a shell, wherein a spanner is arranged at the upper end of the shell, a plurality of connecting terminals are respectively arranged at two sides of the shell, two groups of moving contact mechanisms are arranged at two sides of the interior of the shell, each group of moving contact mechanisms is electrically connected with adjacent connecting terminals, a first moving contact, a second moving contact and a locking plate are coaxially and rotatably fixed in the shell, the first moving contact is hinged with a locking block, the first moving contact and the second moving contact can be in unidirectional mechanical linkage, the locking plate is connected with the spanner through a pull rod, and the locking plate is mutually abutted with the locking block;
the method is characterized in that: the first locking plate is fixedly provided with a deflector rod, the deflector rod can be synchronously linked with a tripping mechanism of the circuit breaker, a mounting hole is formed in the position, corresponding to the deflector rod, of the surface of the shell, and the aperture of the mounting hole is identical to that of the deflector rod.
Further, a change-over switch is rotationally fixed in the shell, the change-over switch is provided with a hook, and the hook can fix the second moving contact in a fastening way.
Further, a rotary switch is arranged in the shell, and the rotary switch can squeeze or release one end of the change-over switch.
Further, one end of the change-over switch is abutted to the rotary switch through a first spring.
Further, a coil spring is fixed on the first moving contact, one end of the coil spring is abutted against the locking plate, and the other end of the coil spring is fixed on the first moving contact.
Further, the first moving contact and the second moving contact are connected with the shell through reset springs.
Further, the rotary switch is provided with a cam, and the cam can press the change-over switch when rotating.
Furthermore, the other end of the change-over switch penetrates through the pull rod, and the buckle fixing can be released when the pull rod rotates.
Further, a first baffle is arranged on one side, close to the second moving contact, of the first moving contact, a second baffle is arranged on one side, close to the first moving contact, of the second moving contact, and the first baffle is in abutting connection with the second baffle.
Further, the wrench is provided with a reset coil spring, one end of the reset coil spring is connected with the wrench, and the other end of the reset coil spring is connected with the shell.
The technical effects of the scheme of the invention can be achieved as follows:
the auxiliary device for the breaker can realize the indication of opening and closing by utilizing the opening and closing of the first moving contact and the second moving contact with the fixed contact respectively; in addition, the auxiliary device for the circuit breaker can fix the hook with the second movable contact through the rotary switch, the locking plate is released from abutting with the locking mechanism under the condition that the tripping mechanism of the circuit breaker trips, at the moment, the coil spring drives the pull rod to return, the release of the driving change-over switch and the locking fixation of the second contact are carried out when the pull rod returns, and the second movable contact is driven by the reset spring to be on-off, so that an alarm is given.
The auxiliary device for the circuit breaker can assemble a plurality of auxiliary devices, the deflector rod of each auxiliary device is matched and fixed with the mounting hole of the other auxiliary device, the linkage of the plurality of deflector rods is realized, the indication function and the alarm function of the circuit breaker can be realized at the same time, and the auxiliary devices with different functions of the circuit breaker can achieve the function of mutual assembly.
Drawings
Fig. 1 is an external configuration view of an auxiliary device for a circuit breaker according to the present invention.
Fig. 2 is an internal structural view of the auxiliary device for a circuit breaker of the present invention.
Fig. 3 is a perspective view showing an auxiliary device for a circuit breaker according to the present invention.
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 and 2, an auxiliary device for a circuit breaker comprises a shell 1, wherein a spanner 2 is arranged at the upper end of the shell, a plurality of connecting terminals 3 are respectively arranged at two sides of the shell, two groups of moving contact mechanisms are arranged at two sides of the interior of the shell, each group of moving contact mechanisms is electrically connected with adjacent connecting terminals, a first moving contact 5, a second moving contact 6 and a locking plate 10 are coaxially and rotatably fixed in the shell, the first moving contact 5 is hinged with a locking block 9, the first moving contact 5 and the second moving contact 6 can be mechanically linked in a unidirectional manner, the locking plate is connected with the spanner through a pull rod 13, and the locking plate 10 is mutually abutted with the locking block 9;
the first locking plate is fixedly provided with a deflector rod 4, the deflector rod can be synchronously linked with a tripping mechanism of the circuit breaker, a mounting hole 11 is formed in the surface of the shell 1 at a position corresponding to the deflector rod 4, and the aperture of the mounting hole 11 is the same as that of the deflector rod 4.
The switch 7 is rotationally fixed in the shell 1, the switch 7 is provided with a hook 12, the hook 12 can fix the second moving contact 6 in a fastening way, and one end of the switch 7 is abutted to the rotary switch 8 through a first spring.
A rotary switch 8 is arranged in the shell, and the rotary switch 8 can squeeze or release one end of the change-over switch 7.
The first moving contact 5 is fixed with a coil spring, one end of the coil spring is abutted against the locking plate 10, and the other end of the coil spring is fixed with the first moving contact 5.
The first moving contact 5 and the second moving contact 6 are connected with the shell 1 through return springs.
The rotary switch is provided with a cam which can press the change-over switch 7 when rotated.
The other end of the change-over switch 7 passes through the pull rod 13, and the fastening fixation can be released when the pull rod 13 rotates.
The first movable contact 5 is close to one side of the second movable contact 6 and is provided with a first baffle, one side of the second movable contact is close to the first movable contact and is provided with a second baffle, and the first baffle is in abutting connection with the second baffle.
The wrench 2 is provided with a reset coil spring, one end of the reset coil spring is connected with the wrench 2, and the other end of the reset coil spring is connected with the shell 1.
Above-mentioned auxiliary device can be assembled a plurality of auxiliary device, and the driving lever of every auxiliary device is fixed with another auxiliary device's mounting hole cooperation, realizes the linkage of a plurality of driving levers, and can realize the instruction function and the alarming function of circuit breaker simultaneously, and the function of mutually piecing together can be reached to the different function auxiliary device of circuit breaker.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The auxiliary device for the circuit breaker comprises a shell, wherein a spanner is arranged at the upper end of the shell, a plurality of connecting terminals are respectively arranged at two sides of the shell, two groups of moving contact mechanisms are arranged at two sides of the interior of the shell, each group of moving contact mechanisms is electrically connected with adjacent connecting terminals, a first moving contact, a second moving contact and a locking plate are coaxially and rotatably fixed in the shell, the first moving contact is hinged with a locking block, the first moving contact and the second moving contact can be in unidirectional mechanical linkage, the locking plate is connected with the spanner through a pull rod, and the locking plate is mutually abutted with the locking block;
the method is characterized in that: the first locking plate is fixedly provided with a deflector rod, the deflector rod can be synchronously linked with a tripping mechanism of the circuit breaker, a mounting hole is formed in the position, corresponding to the deflector rod, of the surface of the shell, and the aperture of the mounting hole is identical to that of the deflector rod.
2. The auxiliary device for a circuit breaker according to claim 1, wherein a change-over switch is rotatably fixed in the housing, the change-over switch being provided with a hook capable of snap-fixing the second moving contact.
3. The auxiliary device for a circuit breaker according to claim 2, wherein a rotary switch is provided in the housing, the rotary switch being capable of pressing or releasing one end of the switching switch.
4. The auxiliary device for a circuit breaker according to claim 3, wherein one end of the change-over switch is abutted against the rotary switch by a first spring.
5. The auxiliary device for a circuit breaker as claimed in claim 4, wherein the first moving contact is fixed with a coil spring, one end of the coil spring is abutted against the latch plate, and the other end of the coil spring is fixed with the first moving contact.
6. The auxiliary device for a circuit breaker according to claim 1, wherein the first and second moving contacts are connected with the housing with a return spring.
7. The auxiliary device for a circuit breaker according to claim 3, wherein the rotary switch is provided with a cam capable of pressing the change-over switch when the cam rotates.
8. The auxiliary device for a circuit breaker according to claim 4, wherein the other end of the change-over switch passes through the pull rod, and the pull rod is rotated to release the snap-fit.
9. The auxiliary device for a circuit breaker according to claim 1, wherein a first baffle is arranged on a side of the first moving contact close to the second moving contact, a second baffle is arranged on a side of the second moving contact close to the first moving contact, and the first baffle is in abutting connection with the second baffle.
10. The auxiliary device for a circuit breaker as claimed in claim 1, wherein the wrench is provided with a return coil spring having one end connected to the wrench and the other end connected to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310357860.XA CN116864349A (en) | 2023-04-06 | 2023-04-06 | Auxiliary device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310357860.XA CN116864349A (en) | 2023-04-06 | 2023-04-06 | Auxiliary device for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116864349A true CN116864349A (en) | 2023-10-10 |
Family
ID=88220397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310357860.XA Pending CN116864349A (en) | 2023-04-06 | 2023-04-06 | Auxiliary device for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116864349A (en) |
-
2023
- 2023-04-06 CN CN202310357860.XA patent/CN116864349A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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