CN115602502B - Tripping structure of circuit breaker - Google Patents
Tripping structure of circuit breakerInfo
- Publication number
- CN115602502B CN115602502B CN202110780060.XA CN202110780060A CN115602502B CN 115602502 B CN115602502 B CN 115602502B CN 202110780060 A CN202110780060 A CN 202110780060A CN 115602502 B CN115602502 B CN 115602502B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- handle
- trip
- tripping
- rocker
- 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
-
- 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
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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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
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- Breakers (AREA)
Abstract
The embodiment of the application provides a tripping structure of a circuit breaker. The embodiment of the application relates to a tripping structure of a circuit breaker, which comprises the circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker and comprises a tripping rocker, the tripping rocker comprises a pivot connecting end, a free rotating end and a handle connecting end, the handle connecting end is connected with a handle, the free rotating end is connected with an operating mechanism, the tripping rocker rotates through the pivot connecting end, when the circuit breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, the free rotating end of the tripping rocker triggers the operating mechanism to trip to carry out the opening operation of the circuit breaker, and when the circuit breaker is opened, the handle directly triggers the operating mechanism to trip, and an energy storage spring in the operating mechanism enables the circuit breaker to realize quick opening.
Description
Technical Field
The application relates to the field of piezoelectric devices, in particular to a tripping structure of a circuit breaker.
Background
A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and closing, carrying and breaking a current under abnormal circuit conditions within a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, and the division of a high-voltage boundary line and a low-voltage boundary line is fuzzy, and is generally called as a high-voltage electrical appliance with the voltage of more than 3 kV. 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 function equivalent to the combination of a fuse type switch, an over-under-heating relay and the like, generally does not need to change parts after breaking fault current, and has been widely applied at present.
At present, a small-sized circuit breaker can be rapidly closed through an energy storage structure, but the quick opening cannot be realized due to space limitation, namely, the breaking speed of a contact system during circuit breaking is related to the speed of operating a breaking handle, and if the circuit breaker is slowly opened, the contact system of the circuit breaker is burnt.
Disclosure of Invention
The application aims to overcome the defects of the prior art and provides a breaker tripping structure with rapid breaking and safe and stable performance.
In order to achieve the above purpose, the application adopts the following technical scheme:
The circuit breaker tripping structure comprises a circuit breaker, a tripping mechanism and a tripping rocker, wherein the circuit breaker comprises a shell, a handle which is pivotally connected to the top of the shell, the handle is connected with an operating mechanism, the handle drives the operating mechanism to conduct opening and closing operations of the circuit breaker, the tripping mechanism is arranged on the circuit breaker and comprises a tripping rocker, the tripping rocker comprises a pivot connecting end, a free rotating end and a handle connecting end, the handle connecting end is connected with the handle, the free rotating end is connected with the operating mechanism, the tripping rocker rotates through the pivot connecting end, when the circuit breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, and the tripping rocker free rotating end triggers the operating mechanism to trip to conduct opening operations of the circuit breaker.
Further, the trip mechanism is located at one side outside the casing of the circuit breaker.
Further, the operating mechanism of the circuit breaker comprises a snap-fit lock catch and a snap-fit buckle, and when the lock catch is driven to release the snap-fit with the snap-fit buckle, the operating mechanism is tripped to drive the moving contact to be separated from the fixed contact.
The trip rocker comprises a first end arm and a second end arm, the pivot connecting end is arranged at the joint of the first end arm and the second end arm, the free rotating end is arranged at the end part of the first end arm, and the handle connecting end is arranged at the end part of the second end arm.
Further, the handle connecting end is a first travel hole formed in the end portion of the second end arm.
Further, the free rotation end is a push rod which is arranged at the end part of the first end arm in an extending way towards the operating mechanism, a second stroke hole of the operating mechanism, in which the push rod stretches into the shell, is arranged at the corresponding position of the shell, and a lock catch of the operating mechanism is provided with a linkage hole in linkage fit with the push rod.
Further, the tripping mechanism further comprises a locating pin, and the handle connecting end is movably connected with the handle through the locating pin.
Further, the handle connecting end is a first travel hole, and the size of the first travel hole is larger than that of the locating pin, so that when the handle drives the breaker to close, the handle drives the locating pin to move in the first travel hole for an idle travel.
Furthermore, the locating pin comprises a locating pin body and a limiting column extending to one side of the locating pin body, the locating pin body is spliced with the handle, and the limiting column is movably connected with the connecting end of the handle.
Further, the tripping mechanism further comprises a fixing plate, the fixing plate is fixedly arranged on one side of the outer part of the shell of the circuit breaker, and the pivoting connection end of the tripping rocker is pivotally connected to the fixing plate.
Furthermore, the fixing plate is T-shaped and comprises a transverse fixing rod and a longitudinal fixing rod vertically connected to the middle of the transverse fixing rod, the tripping rocker is rotatably installed on the longitudinal fixing rod, fixing protrusions matched with the shell are arranged at two ends of the transverse fixing rod towards the shell in an extending mode, and mounting grooves matched with the fixing protrusions in a mounting mode are formed in the side walls of two ends of the circuit breaker respectively.
The trip mechanism further comprises a locating pin and a fixing plate, the movable connecting end is movably connected with the handle through the locating pin, the fixing plate is fixedly arranged on one side of the outer portion of the shell of the circuit breaker, the pivoting connecting end of the trip rocker is pivotally connected to the fixing plate, the trip rocker is located between the shell and the fixing plate, and the fixing plate is located below the trip rocker.
Further, the operating mechanism comprises a connecting rod, a supporting piece, a lock catch and a jump button, wherein the supporting piece is rotatably arranged in the shell, the energy storage spring is connected with the supporting piece, the lock catch and the jump button are rotatably arranged on the supporting piece and are in snap fit, the handle is connected with the jump button through the connecting rod, and the movable contact is connected with the supporting piece.
Further, or the operating mechanism comprises a rocker arm, a connecting rod, a supporting piece, a lock catch and a jump button, wherein the rocker arm and the supporting piece are rotatably arranged in a shell, the rocker arm is in limit connection with the supporting piece through a rocker arm spring, an energy storage spring is connected with the supporting piece, the lock catch and the jump button are rotatably arranged on the supporting piece and are in snap fit respectively, a handle is connected with the jump button through the connecting rod, a movable contact is connected with the rocker arm, and a limit arm in sliding fit with the rocker arm is arranged in the shell.
The embodiment of the application discloses a circuit breaker tripping structure, which comprises a circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker, when the circuit breaker is opened, a handle drives a handle connecting end to drive a tripping rocker to rotate, a free rotating end of the tripping rocker assists in pushing an operating mechanism to trip for opening the circuit breaker, the tripping mechanism is additionally arranged, when the circuit breaker is opened, the handle directly triggers the operating mechanism to trip, and an energy storage spring in the operating mechanism enables the circuit breaker to realize quick opening, so that the circuit breaker is prevented from being burnt out, and the safety performance of the circuit breaker is improved.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker in a closed state according to a circuit breaker trip structure of an embodiment of the present application;
fig. 2 is a schematic structural view of a circuit breaker with a circuit breaker tripping structure in a breaking process according to an embodiment of the present application;
fig. 3 is a schematic structural view of a circuit breaker in a breaking state of a circuit breaker trip structure according to an embodiment of the present application;
Fig. 4 is a schematic structural view of a back side of a circuit breaker trip structure according to an embodiment of the present application;
fig. 5 is a schematic structural view of the internal structure of a circuit breaker of the tripping structure of the circuit breaker according to the embodiment of the present application;
fig. 6 is a schematic structural view of a side wall of a circuit breaker trip structure according to an embodiment of the present application;
Fig. 7 is an exploded view of a trip mechanism of a circuit breaker trip mechanism of an embodiment of the present application;
fig. 8 is an assembled schematic view of a trip mechanism of a circuit breaker trip structure according to an embodiment of the present application;
Fig. 9 is a schematic structural view of a trip rocker of a trip structure of a circuit breaker according to an embodiment of the present application;
Fig. 10 is a schematic structural view of a fixing plate of a trip structure of a circuit breaker according to an embodiment of the present application.
Detailed Description
The following is a further description of embodiments of the circuit breaker trip mechanism of the present application, given in connection with the examples of figures 1 to 10. The circuit breaker trip structure of the present application is not limited to the description of the following embodiments.
At present, a small-sized circuit breaker can be rapidly closed through an energy storage structure, but the quick opening cannot be realized due to space limitation, namely, the breaking speed of a contact system during circuit breaking is related to the speed of operating a breaking handle, and if the circuit breaker is slowly opened, the contact system of the circuit breaker is burnt. Aiming at the technical problems, the application provides a tripping structure of a circuit breaker to solve the technical problems.
As shown in fig. 1-5, the embodiment of the application provides a tripping structure of a circuit breaker, which comprises a circuit breaker a and a tripping mechanism B arranged on the circuit breaker a, wherein the circuit breaker comprises a shell and a handle 41 pivotally connected to the top of the shell, the handle 41 is connected with an operating mechanism, the handle 41 drives the operating mechanism to perform opening and closing operations of the circuit breaker, the tripping mechanism B comprises a tripping rocker 2, the tripping rocker 2 comprises a pivotal connection end, a free rotation end and a handle connection end, the handle connection end is connected with the handle 41, the free rotation end is connected with the operating mechanism, the tripping rocker 2 rotates through the pivotal connection end, when the circuit breaker is opened, the handle 41 drives the handle connection end to drive the tripping rocker 2 to rotate, and the free rotation end of the tripping rocker 2 triggers the operating mechanism to trip to perform opening operation of the circuit breaker.
The embodiment of the application discloses a circuit breaker tripping structure, which comprises a circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker, when the circuit breaker is opened, a handle drives a handle connecting end to drive a tripping rocker to rotate, a free rotating end of the tripping rocker pushes an operating mechanism to trip for opening the circuit breaker, the tripping mechanism is additionally arranged, when the circuit breaker is opened, the handle directly triggers the operating mechanism to trip, and an energy storage spring in the operating mechanism enables the circuit breaker to realize quick opening, so that the circuit breaker is prevented from being burnt out, and the safety performance of the circuit breaker is improved.
The operating mechanism of the circuit breaker a comprises a snap-fit lock catch 43 and a jump button, and when the lock catch 43 is driven to release the snap-fit with the jump button, the operating mechanism is tripped to drive the moving contact to be quickly separated from the fixed contact, which is the prior art in the field. The improvement point of the application is that the quick opening is realized by adding the tripping mechanism and directly triggering the operating mechanism to trip through the tripping mechanism by the opening swing of the handle. The following description will be made with reference to two embodiments of the operating mechanism, but the operating mechanism of the present application is not limited to the following embodiments.
For example, one embodiment of the operating mechanism includes a connecting rod, a supporting member, a latch 43 and a trip button, the supporting member is rotatably mounted in the housing, the energy storage spring is connected to the supporting member, the latch 43 and the trip button are rotatably mounted on the supporting member and are in snap fit, the handle 41 is connected to the trip button through the connecting rod, and the movable contact is connected to the supporting member. When the switch is closed, the handle 41 drives the supporting piece to rotate through the connecting rod and the jump button to compress the energy storage spring to drive the movable contact to swing and contact with the fixed contact, when the switch is opened, the handle 41 drives the supporting piece to rotate through the connecting rod and the jump button to drive the movable contact to swing and separate from the fixed contact, and when the lock catch 43 is driven to release the snap fit with the jump button, the operating mechanism trips, and the energy storage spring drives the supporting piece to rotate to drive the movable contact to quickly separate from the fixed contact.
For example, another embodiment of the operating mechanism is that the operating mechanism comprises a rocker arm, a connecting rod, a supporting member, a lock catch 43 and a jump button, wherein the rocker arm and the supporting member are rotatably installed in a shell, the rocker arm is in limit connection with the supporting member through a rocker arm spring, an energy storage spring is connected with the supporting member, the lock catch 43 and the jump button are rotatably installed on the supporting member and are in snap fit, a handle 41 is connected with the jump button through the connecting rod, a movable contact is connected with the rocker arm, and a limit arm in sliding fit with the rocker arm is arranged in the shell of the handle 41. When the switch is closed, the handle 41 drives the supporting piece to rotate through the connecting rod and the jump button to compress the energy storage spring, meanwhile, the limiting arm of the handle 41 limits the rocker arm in the initial stage, the rocker arm does not rotate to compress the rocker arm spring between the rocker arm and the supporting piece, the limiting arm releases the limit on the rocker arm after the handle 41 swings to a certain position, the rocker arm spring drives the rocker arm to rotate rapidly to drive the moving contact to swing and contact with the fixed contact, and the handle 41 drives the supporting piece to rotate through the connecting rod and the jump button to drive the moving contact to swing and separate from the fixed contact during the switch-off, when the lock catch 43 is driven to release the snap fit with the jump button, the operating mechanism is tripped, and the energy storage spring drives the supporting piece to rotate to drive the moving contact to separate from the fixed contact rapidly.
It should be noted that the tripping mechanism of the embodiment of the application is not limited to be used in a circuit breaker, can be assembled on one side of a product, and can be used as an accessory for specific occasions related to the operation speed of a handle of the product, for example, a product with a double-power converter which is slowly opened by a motor. When the handle of the embodiment of the application rotates to the middle position, the breaker contact is not separated and the final pressure is not eliminated, and the tripping rocker drives the breaker operating mechanism to unlock and trip so as to realize the rapid disconnection of the contact.
As shown in fig. 1-5, the tripping mechanism B is located at one side outside the casing of the circuit breaker, the tripping mechanism B further comprises a positioning pin 1 and a fixing plate 3, the handle connecting end is movably connected with the handle 41 through the positioning pin 1, the fixing plate 3 is fixedly installed at one side outside the casing of the circuit breaker, the pivoting connecting end of the tripping rocker 2 is pivotally connected to the fixing plate 3, the tripping rocker 2 is located between the casing and the fixing plate 3, and the fixing plate 3 is located below the tripping rocker 2. The handle connecting end is movably connected with the handle 41 through the locating pin 1, the pivot connecting end of the tripping rocker 2 is pivotally connected to the fixed plate 3, the tripping rocker 2 is stably installed on the circuit breaker through the locating pin 1 and the fixed plate 3, the installation of the tripping rocker 2 is stable and reliable, and the overall structure of the tripping mechanism is simple and compact. It should be noted that, in the embodiment of the present application, the structures of the positioning pin 1, the trip rocker 2 and the fixing plate 3 of the trip mechanism B are not limited, and when the trip mechanism B is installed on other products, the structures of the positioning pin 1, the trip rocker 2 and the fixing plate 3 can be improved according to the structural characteristics of the other products so as to adapt to the other products. For example, the fixing plate 3 is changed to a corresponding housing structure or the like. In addition, the tripping mechanism B of the embodiment of the application can also be arranged on the inner side of the shell of the circuit breaker, but the internal structure of the circuit breaker needs to be improved, and the cost is higher and more complex.
As shown in fig. 7-9, the specific configuration of the trip rocker. The tripping rocker 2 comprises a first end arm 21 and a second end arm 22, wherein a pivoting connection end is arranged at the joint of the first end arm 21 and the second end arm 22, a free rotation end is arranged at the end part of the first end arm 21, and a handle connection end is arranged at the end part of the second end arm 22. The first end arm 21 and the second end arm 22 of the tripping rocker 2 form an obtuse angle with each other, the tripping rocker 2 rotates through a pivot connection end, an operating mechanism of the circuit breaker is triggered through rotation of a free rotation end, and the operating mechanism is connected with a handle of the circuit breaker through a handle connection end so as to be linked with the handle, so that the tripping of the circuit breaker is accelerated, and the overall structure of the tripping rocker of the embodiment of the application is simple and compact.
As shown in fig. 7 and 9, the pivot connection end is a pivot shaft 23 extending toward the housing at the junction of the first end arm 21 and the second end arm 22. Correspondingly, a pivot hole should also be provided which cooperates with the pivot shaft 23. The pivot hole may be a slot structure or a through hole structure, and may be provided on the housing of the circuit breaker or may be provided on the fixing plate 3.
As shown in fig. 1, 7 and 9, the handle connection end of the trip rocker 2 is a first travel hole 221 formed in the end of the second end arm 22. The handle connection end has a first travel hole 221 therein limiting the travel of the handle connection end of the trip rocker 2. Preferably, the first stroke hole 221 is an elliptical hole or a square hole, and the specific shape of the first stroke hole 221 is not limited in the embodiment of the present application.
As shown in fig. 7-9, the free rotation end of the trip rocker 2 is a push rod 211 extending from the end of the first end arm 21 towards the operating mechanism, a second travel hole 42 of the operating mechanism is formed in the corresponding position of the housing, the push rod 211 extends into the housing, and a lock catch 43 of the operating mechanism is provided with a linkage hole 431 in linkage fit with the push rod 211. Preferably, the second stroke aperture 42 is an arcuate aperture. The trip rocker 2 pivots, the movement trace of the push rod 211 of the first end arm 21 is an arc-shaped movement trace, and the movement trace of the lock catch 43 of the operating mechanism of the circuit breaker is also an arc-shaped movement trace, so the second stroke hole 42 is set as an arc-shaped hole, and the second stroke hole 42 simultaneously limits the stroke of the push rod 211. The push lever 211 and the pivot shaft 23 are located at both sides of the trip rocker 2, respectively.
When the trip rocker 2 is installed, the pivot shaft 23 is installed in the pivot hole 311 of the fixed plate 3, the limit post 12 extends into the first travel hole 221 of the second end arm 22, the push rod 211 of the first end arm 21 extends into the inside of the shell through the second travel hole 42, and the push rod 211 is inserted into the linkage hole 431 on the lock catch 43, so that linkage fit between the push rod 211 and the operating mechanism is realized.
As shown in fig. 7 and 8, the sliding connection structure of the trip rocker 2 and the handle 41 in the embodiment of the application is that the handle connection end of the trip rocker 2 is movably connected with the handle 41 through a positioning pin 1. Preferably, the size of the first travel hole 221 is larger than that of the positioning pin 1, so that when the handle 41 drives the circuit breaker to switch on, the handle 41 drives the positioning pin 1 to move in the first travel hole 221 for an idle travel, the trip rocker 2 rotates along with an internal operating mechanism of the circuit breaker, the push rod 211 synchronously rotates along with the product operating mechanism, so that the internal operating mechanism of the circuit breaker is not tripped and unlocked to switch on smoothly in the switching-on process of the product, when the circuit breaker is switched off, the handle 41 drives the trip rocker 2 to rotate through a handle connecting end, the push rod 211 in the trip rocker 2 rotates along with the handle, the rotating speed is faster than that of the lock catch 43 of the internal operating mechanism of the circuit breaker, and the operating mechanism is driven by the push rod 211 to release the snap fit with the trip buckle, so that the circuit breaker is tripped, and then swings to a switching-off position along with the handle 41. Specifically, the positioning pin 1 preferably comprises a positioning pin body 11 and a limiting column 12 extending to one side of the positioning pin body 11, wherein the positioning pin body 11 is spliced with the handle 41, and the limiting column 12 is movably connected with the connecting end of the handle. Wherein, the spacing post 12 stretches into the first travel hole 221, and the first travel hole 221 limits the travel of the spacing post 12. When the trip rocker is installed, the locating pin body 11 is inserted into a corresponding groove of the handle 41, and the limit post 12 extends into the first travel hole 221, so that the handle connecting end of the trip rocker 2 is in sliding connection with the handle 41.
As shown in fig. 7, 8 and 10, the fixed plate 3 is fixedly installed at one side of the exterior of the casing of the circuit breaker, and the pivoting connection end of the trip rocker 2 is pivotally connected to the fixed plate 3. The trip rocker 2 is located between the housing of the circuit breaker and the fixed plate 3.
Specifically, as shown in fig. 10, the fixing plate 3 has a specific structure. The fixed plate 3 is T-shaped, comprises a transverse fixed rod 32 and a longitudinal fixed rod 31 vertically connected to the middle part of the transverse fixed rod 32, wherein a pivot hole 311 which is in pivot fit with the pivot shaft 23 of the trip rocker 2 is formed in the longitudinal fixed rod 31, and the pivot shaft 23 is arranged in the pivot hole 311 of the fixed plate 3 to realize pivot installation of the trip rocker 2. The shape, size, etc. of the fixing plate 3 are not limited in the embodiment of the present application, and the shape, size, etc. of the fixing plate 3 may be adjusted according to actual conditions.
As shown in fig. 6 and 10, fixing protrusions 321 which are in installation fit with the housing are arranged at two ends of the transverse fixing rod 32 towards the housing, and mounting grooves 421 which are in installation fit with the fixing protrusions 321 are respectively arranged on two end side walls of the circuit breaker. During installation, the pivot shaft 23 is installed in the pivot hole 311 of the fixed plate 3, so that the trip rocker 2 is pivoted, the fixing protrusions 321 at the two ends of the transverse fixing rod 32 face one side of the circuit breaker shell, the transverse fixing rod 32 is pressed downwards, and the fixing protrusions 321 at the two ends of the transverse fixing rod 32 are pressed into the side wall installing grooves 421 at the two ends of the circuit breaker.
The following description is made with reference to fig. 1 to 3 for the circuit breaker tripping structure of the present application to accelerate the switching-off process of the circuit breaker:
as shown in fig. 1, the circuit breaker is in a closed state. The handle is directed to the left.
As shown in fig. 2, when the switch-off is required, the handle 41 is shifted to the right, the handle 41 drives the first travel hole 221 to drive the trip rocker 2 to rotate, and the push rod 211 of the trip rocker 2 drives the operating mechanism of the circuit breaker to act. When the handle rotates to the middle position, the breaker contact is not separated and the final pressure is not eliminated, and the tripping rocker drives the breaker operating mechanism to trip so as to realize quick disconnection of the contact.
As shown in fig. 3, the circuit breaker is in a breaking state. The handle is directed to the right.
The following description is made with reference to fig. 1 to 10, in which the tripping structure of the circuit breaker of the present application is assembled on one side of the circuit breaker:
First, the positioning pin body 11 is inserted into a corresponding groove of the handle 41, and the limiting post 12 extends into the first travel hole 221, so that the handle connecting end of the trip rocker 2 is slidably connected with the handle 41.
Then, when the trip rocker 2 is installed, the limit post 12 extends into the first travel hole 221 of the second end arm 22, the push rod 211 of the first end arm 21 extends into the shell through the second travel hole 42, and the push rod 211 is inserted into the linkage hole 431 on the lock catch 43, so that linkage fit between the push rod 211 and the operating mechanism is realized.
Finally, the fixing plate 3 is mounted on the housing, the pivot shaft 23 is mounted in the pivot hole 311 of the fixing plate 3, the fixing protrusions 321 at both ends of the lateral fixing lever 32 face one side of the circuit breaker housing, the lateral fixing lever 32 is pressed downward, and the fixing protrusions 321 at both ends of the lateral fixing lever 32 are pressed into both end side wall mounting grooves 421 of the circuit breaker.
According to the embodiment of the application, by additionally arranging the tripping mechanism, redundant pushing force is provided for the operating mechanism of the circuit breaker when the circuit breaker is opened, so that the circuit breaker can be opened quickly, the circuit breaker is prevented from being burnt out, and the safety performance of the circuit breaker is improved.
The foregoing is a further detailed description of the application in connection with the preferred embodiments, and it is not intended that the application be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.
Claims (9)
1. The circuit breaker tripping structure comprises a circuit breaker (A), wherein the circuit breaker (A) comprises a shell and a handle (41) which is pivotally connected to the top of the shell, the handle (41) is connected with an operating mechanism, and the handle (41) drives the operating mechanism to drive a moving contact to swing to contact with or separate from a fixed contact so as to perform opening and closing operation of the circuit breaker;
the tripping mechanism (B) is arranged on the circuit breaker (A), the tripping mechanism (B) is positioned on one side outside a shell of the circuit breaker, the tripping mechanism (B) comprises a tripping rocker (2), the tripping rocker (2) comprises a pivoting connecting end, a free rotating end and a handle connecting end, the handle connecting end is movably connected with a handle (41) of the circuit breaker (A) through a locating pin (1), the free rotating end is connected with an operating mechanism, and the tripping rocker (2) rotates through the pivoting connecting end;
The handle connecting end is a first travel hole (221), the size of the first travel hole (221) is larger than that of the locating pin (1), when the handle (41) drives the breaker to close, the handle (41) drives the locating pin (1) to move in the first travel hole (221) for an idle travel, when the breaker breaks a gate, the handle (41) of the breaker (A) drives the handle connecting end to drive the trip rocker (2) to rotate, and the trip rocker (2) triggers the operating mechanism to trip for breaking the gate.
2. The circuit breaker trip structure of claim 1, wherein the operating mechanism of the circuit breaker (A) comprises a snap-fit lock catch (43) and a trip button, and when the lock catch (43) is driven to release the snap-fit with the trip button, the operating mechanism trips to drive the moving contact to separate from the fixed contact.
3. The circuit breaker trip structure of claim 1, wherein said trip rocker (2) comprises a first end arm (21) and a second end arm (22);
The pivot connection end is arranged at the joint of the first end arm (21) and the second end arm (22), the free rotation end is arranged at the end part of the first end arm (21), and the handle connection end is arranged at the end part of the second end arm (22).
4. The trip mechanism of a circuit breaker as recited in claim 3, wherein said handle connection end is a first travel hole (221) formed in an end portion of the second end arm (22).
5. The circuit breaker tripping structure according to claim 3, characterized in that the free rotation end is a push rod (211) extending from the end of the first end arm (21) towards the operating mechanism, a second travel hole (42) for extending the push rod (211) into the interior of the casing is arranged at the corresponding position of the casing, and a lock catch (43) of the operating mechanism is provided with a linkage hole (431) in linkage fit with the push rod (211).
6. The circuit breaker tripping structure according to claim 1, wherein the positioning pin (1) comprises a positioning pin body (11) and a limiting column (12) extending to one side of the positioning pin body (11), the positioning pin body (11) is spliced with the handle (41), and the limiting column (12) is movably connected with the connecting end of the handle.
7. The circuit breaker trip structure of claim 1, wherein the trip mechanism (B) further comprises a fixed plate (3), the fixed plate (3) is fixedly arranged on one side outside a shell of the circuit breaker, and the pivot connection end of the trip rocker (2) is pivotally connected to the fixed plate (3).
8. The circuit breaker tripping structure according to claim 7, wherein the fixing plate (3) is T-shaped and comprises a transverse fixing rod (32) and a longitudinal fixing rod (31) vertically connected to the middle of the transverse fixing rod (32), the tripping rocker (2) is rotatably installed on the longitudinal fixing rod (31), fixing protrusions (321) which are matched with the shell are arranged at two ends of the transverse fixing rod (32) in an extending mode towards the shell, and installing grooves (421) which are matched with the fixing protrusions (321) are respectively arranged on the side walls of two ends of the circuit breaker.
9. The trip mechanism of claim 1, wherein the operating mechanism comprises a connecting rod, a supporting member, a lock catch (43) and a trip button, the supporting member is rotatably installed in the housing, the energy storage spring is connected with the supporting member, the lock catch (43) and the trip button are rotatably installed on the supporting member and are in snap fit, the handle (41) is connected with the trip button through the connecting rod, and the movable contact is connected with the supporting member;
Or operating device includes rocking arm, connecting rod, support piece, hasp (43) and jump knot, and rocking arm and support piece rotate and install in the casing, and the rocking arm passes through the rocking arm spring and is connected with the support piece is spacing, and the energy storage spring is connected with the support piece, and hasp (43) and jump knot rotate respectively and install on the support piece and snap-fit, and handle (41) are connected with the jump knot through the connecting rod, and the moving contact is connected with the rocking arm, and handle (41) are equipped with the spacing arm with rocking arm sliding fit in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780060.XA CN115602502B (en) | 2021-07-09 | 2021-07-09 | Tripping structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780060.XA CN115602502B (en) | 2021-07-09 | 2021-07-09 | Tripping structure of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115602502A CN115602502A (en) | 2023-01-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204189740U (en) * | 2014-10-13 | 2015-03-04 | 浙江正泰电器股份有限公司 | Under-voltage release |
| CN208970468U (en) * | 2018-09-04 | 2019-06-11 | 上海良信电器股份有限公司 | A kind of structure-improved of the tripping interlinked mechanism of electrically operated device |
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| CN101599395B (en) * | 2008-06-05 | 2011-06-29 | 浙江正泰电器股份有限公司 | Auxiliary disengaging mechanism for breaker |
| CN204011312U (en) * | 2014-07-16 | 2014-12-10 | 浙江天正电气股份有限公司 | A kind of Long-distance Control automatic closing mechanism and apply the circuit breaker of this mechanism |
| CN107785215A (en) * | 2016-08-31 | 2018-03-09 | 肇庆恒港电力科技发展有限公司 | The trip action device and its control method of a kind of circuit breaker operation mechanism |
| CN207765386U (en) * | 2018-01-18 | 2018-08-24 | 温州奥来电器有限公司 | A kind of electric leakage mechanism of leakage circuit breakers |
| CN108511288B (en) * | 2018-03-07 | 2023-09-05 | 广东南冠电气有限公司 | Small electromagnetic trip type leakage circuit breaker |
| CN208460686U (en) * | 2018-04-27 | 2019-02-01 | 巨邦集团有限公司 | A kind of releasing structure of breaker |
| CN109243932B (en) * | 2018-10-11 | 2024-04-09 | 上海永继电气股份有限公司 | Breaker operating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204189740U (en) * | 2014-10-13 | 2015-03-04 | 浙江正泰电器股份有限公司 | Under-voltage release |
| CN208970468U (en) * | 2018-09-04 | 2019-06-11 | 上海良信电器股份有限公司 | A kind of structure-improved of the tripping interlinked mechanism of electrically operated device |
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