CN113745071B - A trip device and a circuit breaker - Google Patents
A trip device and a circuit breaker Download PDFInfo
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- CN113745071B CN113745071B CN202111128818.8A CN202111128818A CN113745071B CN 113745071 B CN113745071 B CN 113745071B CN 202111128818 A CN202111128818 A CN 202111128818A CN 113745071 B CN113745071 B CN 113745071B
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- push rod
- iron core
- release
- lock
- bracket
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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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
-
- 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
- H01H71/24—Electromagnetic mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
本发明公开了一种脱扣器和断路器，涉及低压电器技术领域，包括：支架；电磁机构，电磁机构包括线圈、线圈骨架、动铁芯、静铁芯和永磁体；静铁芯设于线圈骨架内，动铁芯活动设于线圈骨架内，永磁体设于靠近静铁芯的线圈骨架的一端；二次放大机构，二次放大机构包括推杆机构、储能弹簧和锁扣机构；储能弹簧设于推杆机构上，锁扣机构设于储能弹簧的一端，锁扣机构固定在支架上，靠近锁扣机构的储能弹簧的一端与支架固定连接，推杆机构与支架滑动连接；动铁芯的一端与静铁芯配合，动铁芯的另一端穿出线圈骨架与锁扣机构相配合。本发明的脱扣器实现了欠压脱扣器与分励脱扣器的一体化，减小了脱扣器整体结构体积，且扩大了脱扣器的使用范围。
The present invention discloses a release and a circuit breaker, which relates to the technical field of low-voltage electrical appliances, and includes: a bracket; an electromagnetic mechanism, the electromagnetic mechanism includes a coil, a coil frame, a moving iron core, a static iron core and a permanent magnet; the static iron core is arranged in the coil frame, the moving iron core is movably arranged in the coil frame, and the permanent magnet is arranged at one end of the coil frame close to the static iron core; a secondary amplification mechanism, the secondary amplification mechanism includes a push rod mechanism, an energy storage spring and a locking mechanism; the energy storage spring is arranged on the push rod mechanism, the locking mechanism is arranged at one end of the energy storage spring, the locking mechanism is fixed on the bracket, one end of the energy storage spring close to the locking mechanism is fixedly connected to the bracket, and the push rod mechanism is slidably connected to the bracket; one end of the moving iron core cooperates with the static iron core, and the other end of the moving iron core passes through the coil frame and cooperates with the locking mechanism. The release of the present invention realizes the integration of the undervoltage release and the shunt release, reduces the overall structural volume of the release, and expands the scope of use of the release.
Description
Technical Field
The invention relates to the technical field of piezoelectric devices, in particular to a release and a circuit breaker.
Background
At present, the shunt release and the undervoltage release are independently operated, and are required to be respectively arranged at different positions of the circuit breaker during installation, so that other functional accessories are difficult to install in the circuit breaker under the condition that the size of the circuit breaker is not changed, and the shunt release and the undervoltage release are mostly arranged in the circuit breaker, so that the quick installation and debugging are not convenient, and the technical requirement on the installation operation is high. Meanwhile, the lowest voltage of the shunt release is 24V direct current, and the requirement that the lowest voltage direct current of shunt driving of a circuit breaker is lower than 24V cannot be met, so that the application range of the shunt release is limited.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the technical problem that the existing shunt release and the undervoltage release independently operate and are required to be installed at different positions of a circuit breaker during installation, the invention provides the release and the circuit breaker, which not only realize the integration of the shunt release and the undervoltage release, simplify the integral structure and enlarge the application range of the release.
2. Technical proposal
In order to solve the problems, the technical scheme provided by the invention is as follows:
The release comprises a support, an electromagnetic mechanism, a secondary amplifying mechanism, an energy storage spring and a locking mechanism, wherein the electromagnetic mechanism is arranged in the support and comprises a coil, a coil framework, a movable iron core, a static iron core and a permanent magnet, the coil is arranged on the coil framework, the static iron core is arranged in the coil framework, the movable iron core is movably arranged in the coil framework, the permanent magnet is arranged at one end of the coil framework close to the static iron core, the secondary amplifying mechanism is slidably arranged in the support and comprises a push rod mechanism, an energy storage spring and the locking mechanism, the energy storage spring is arranged on the push rod mechanism, the locking mechanism is arranged at one end of the energy storage spring, the locking mechanism is fixed on the support, one end of the energy storage spring close to the locking mechanism is fixedly connected with the support, the push rod mechanism is slidably locked and separated with the locking mechanism through sliding in the support, one end of the movable iron core is matched with the static iron core, and the other end of the movable iron core penetrates through the coil framework to be matched with the locking mechanism.
In the invention, when the release is in an initial state, the push rod mechanism and the lock catch mechanism are in a separated state, and the push rod mechanism pushes the movable iron core to move towards the static iron core along the channel in the coil framework under the action of the energy storage spring, so that the movable iron core and the static iron core are in a suction state. When pushing the circuit breaker with the handle and buckling, the lever moves for lever axle promotes push rod mechanism and moves towards latch mechanism's direction, because energy storage spring locates on the push rod mechanism, latch mechanism fixes on the support, be close to latch mechanism's energy storage spring's one end with support fixed connection, therefore, when push rod mechanism moves in the support, energy storage spring receives the compression, when push rod mechanism removes and carries out the hasp with latch mechanism, latch mechanism carries out spacingly to push rod mechanism, prevent that push rod mechanism from moving to the direction of keeping away from latch mechanism under energy storage spring's effort, make energy storage spring be in energy storage state all the time, make whole secondary amplification mechanism be in energy storage state, and move iron core and quiet iron core under the effect of permanent magnet still the actuation together, whole mechanism is in steady state.
The coil is electrified to generate a magnetic field, the movable iron core and the static iron core are quickly released under the action of the magnetic field, one end of the movable iron core impacts the locking mechanism, the locking mechanism is separated from the push rod mechanism, so that the secondary amplifying mechanism in an energy storage state is opened, the push rod mechanism rapidly slides to an initial position under the action of the energy storage spring, and meanwhile, the push rod mechanism hooks a tripping rod (used for opening and closing the circuit breaker) on the circuit breaker, so that the tripping rod can be driven when the push rod mechanism returns to the initial position, and the circuit breaker is tripped. When the push rod mechanism returns to the initial position, the movable iron core is driven to be closed with the static iron core again, and one action cycle is completed.
The application, through setting up the specific cooperation connection relation between movable iron core, static iron core, permanent magnet, push rod mechanism, energy storage spring and lock catch mechanism, make the release in the application under the signal of the undervoltage release or under the signal of the shunt release, can realize the disconnection of the circuit breaker, namely the release of the application can realize the effects of undervoltage release, can realize the effects of the shunt release, has realized the integration of undervoltage release and shunt release, reduce the overall structure volume of the release. Meanwhile, due to the arrangement of the permanent magnet in the electromagnetic mechanism, the coil can overcome the attraction of the permanent magnet to the movable iron core and release the movable iron core after being electrified, so that the movable iron core moves at high speed to impact the locking mechanism of the secondary amplifying mechanism and unlock the secondary amplifying mechanism, and due to the arrangement of the permanent magnet, the power of the coil is reduced, and the coil can reliably work under the condition that the rated voltage is as low as 12V. Compared with the existing shunt release, the minimum voltage of the shunt release is 24V, and when the release is used as the shunt release, the application range of the shunt release is enlarged.
Optionally, the device further comprises an auxiliary alarm mechanism, wherein the auxiliary alarm mechanism is arranged on one side of the bracket.
Optionally, the auxiliary alarm mechanism comprises a substrate, a reset spring, an alarm switch, an auxiliary switch, a connecting rod mechanism and a push rod, wherein the alarm switch and the auxiliary switch are respectively arranged at two ends of the substrate, one end of the reset spring is fixed on the substrate, the other end of the reset spring is connected with the push rod, the push rod is in sliding connection with the substrate, the push rod is in matched connection with the auxiliary switch through a limiting structure, the connecting rod mechanism is rotationally arranged on the substrate, one end of the connecting rod mechanism is matched and connected with the push rod, and the other end of the connecting rod mechanism is matched and connected with the alarm switch.
Optionally, a chute is arranged on the base plate, and a protrusion matched with the chute is arranged on the ejector rod.
Optionally, the push rod mechanism includes base and push rod, electromagnetic mechanism locates the below of base, energy storage spring locates on the base, be equipped with on the base with latch mechanism complex hasp groove, the one end of base is equipped with the extension, the extension with the base sets up perpendicularly, the push rod is located on the extension, offered the slide on the base near the extension, run through on the extension and be equipped with the passageway, the passageway with the slide communicates with each other.
Optionally, the push rod is arranged at one side of the channel, and a hook part is arranged at the end part of the push rod.
Optionally, the latch mechanism includes hasp, hasp elastic component and hasp axle, the hasp elastic component cover is located on the hasp axle, the hasp is located on the hasp axle, the both ends of hasp axle are fixed respectively on the support.
Optionally, the electromagnetic mechanism further comprises a magnetic yoke, a fixed plate and a spring, wherein the magnetic yoke is arranged at one end of the coil framework, the spring is sleeved on the movable iron core, one end of the spring is connected with the magnetic yoke, and the other end of the spring is connected with the fixed plate.
Optionally, the portable electronic device further comprises a shell, wherein the bracket, the electromagnetic mechanism, the secondary amplifying mechanism and the auxiliary alarm mechanism are arranged in the shell.
Meanwhile, the invention also provides a circuit breaker comprising the release.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) The release provided by the embodiment of the application has a simple structure, and the release in the application can realize the disconnection of the circuit breaker no matter under the signal of the undervoltage release or under the signal of the shunt release by arranging the movable iron core, the static iron core, the permanent magnet, the push rod mechanism, the energy storage spring and the locking mechanism in a specific matching connection relation, namely the release disclosed by the application can realize the effect of the undervoltage release and the effect of the shunt release, realizes the integration of the undervoltage release and the shunt release, and reduces the integral structural volume of the release. Meanwhile, due to the arrangement of the permanent magnet in the electromagnetic mechanism, the coil can overcome the attraction of the permanent magnet to the movable iron core and release the movable iron core after being electrified, so that the movable iron core moves at high speed to impact the locking mechanism of the secondary amplifying mechanism and unlock the secondary amplifying mechanism, and due to the arrangement of the permanent magnet, the power of the coil is reduced, and the coil can reliably work under the condition that the rated voltage is as low as 12V. Compared with the existing shunt release, the minimum voltage of the shunt release is 24V, and when the release is used as the shunt release, the application range of the shunt release is enlarged.
(2) According to the release provided by the embodiment of the application, the auxiliary alarm mechanism is arranged, so that the release has an alarm function.
(3) According to the release disclosed by the embodiment of the application, the ejector rod slides on the substrate by matching the sliding groove with the bulge, and meanwhile, a certain guiding effect is achieved, so that the ejector rod is ensured to move up and down on the substrate.
(4) According to the release disclosed by the embodiment of the application, the hook part is arranged at one end of the push rod, so that the push rod and the release rod are convenient to hook, and further, the release of the circuit breaker is ensured.
(5) According to the release disclosed by the embodiment of the application, through the structural arrangement of the push rod mechanism, when the push rod mechanism makes reciprocating rectilinear motion in the bracket, the locking mechanism penetrates through the slide way and the channel, the locking mechanism is clamped with the locking groove, and the locking mechanism is connected with the end part of the movable iron core while limiting between the locking mechanism and the push rod mechanism.
(6) According to the circuit breaker provided by the embodiment of the application, the release is adopted, and the integration of the shunt release and the under-voltage release is realized, so that the size of the whole release structure is greatly reduced, the release is only required to be installed in one placement cavity on the circuit breaker, the partial space is saved for the circuit breaker on the premise of not changing the whole size of the circuit breaker, and the installation of other auxiliary accessories on the circuit breaker can be increased, so that the other functions of the circuit breaker are further increased.
Drawings
Fig. 1 is a schematic structural diagram of a release according to an embodiment of the present invention.
Fig. 2 is a schematic partial structure of a release according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a push rod mechanism in a release according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an electromagnetic mechanism in a release according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an auxiliary alarm mechanism in a release according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a protection plate in a release according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a partial structure of a circuit breaker including a trip unit according to an embodiment of the present invention.
Fig. 8 is a partial top view of a circuit breaker including a trip unit according to an embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present application, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. In the description of the present application, 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 application 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Example 1
With reference to fig. 1-8, the embodiment provides a release, which comprises a support 1, an electromagnetic mechanism 2, a secondary amplifying mechanism 3, a push rod mechanism 31, an energy storage spring 32 and a locking mechanism 34, wherein the electromagnetic mechanism 2 is arranged in the support 1, the electromagnetic mechanism 2 comprises a coil 21, a coil framework 22, a movable iron core 23, a static iron core 24 and a permanent magnet 25, the coil 21 is arranged on the coil framework 22, the static iron core 24 is arranged in the coil framework 22, the movable iron core 23 is movably arranged in the coil framework 22, the permanent magnet 25 is arranged at one end of the coil framework 22 close to the static iron core 24, the secondary amplifying mechanism 3 is slidably arranged in the support 1, the secondary amplifying mechanism 3 comprises the push rod mechanism 31, the energy storage spring 32 and the locking mechanism 34, the energy storage spring 32 is arranged on the push rod mechanism 31, the locking mechanism 34 is arranged at one end of the energy storage spring 32, the locking mechanism 34 is fixedly connected with the support 1, the push rod mechanism 31 is slidably connected with the support 1 at one end of the energy storage spring 32 close to the locking mechanism 34, and the other end of the iron core 23 is slidably matched with the push rod mechanism 1 through the push rod mechanism 31 and the other end of the iron core 23.
In practical application, as shown in fig. 7 and 8, the breaker is provided with a handle 7 and a lever 8, the handle 7 is used for realizing the screwing and tripping of the breaker, the lever 8 can be driven to move by the operating handle 7, and the lever 8 is matched with the push rod mechanism 31 through the lever shaft 9 to realize the sliding of the push rod mechanism 31 in the bracket 1. In the present application, when the release is in the initial state, the push rod mechanism 31 and the latch mechanism 34 are in a separated state, and the push rod mechanism 31 pushes the movable iron core 23 to move towards the static iron core 24 along the channel 316 in the coil skeleton 22 under the action of the energy storage spring 32, and makes the movable iron core 24 in a suction state.
When the breaker is pushed to be buckled by the handle 7, the lever moves, so that the lever shaft 9 pushes the push rod mechanism 31 to move towards the direction of the locking mechanism 34, the energy storage spring 32 is arranged on the push rod mechanism 31, the locking mechanism 34 is fixed on the bracket 1, one end of the energy storage spring 32 close to the locking mechanism 34 is fixedly connected with the bracket 1, therefore, when the push rod mechanism 31 moves in the bracket 1, the energy storage spring 32 is compressed, when the push rod mechanism 31 moves and locks with the locking mechanism 34, the locking mechanism 34 limits the push rod mechanism 31, the push rod mechanism 31 is prevented from moving away from the locking mechanism 34 under the action of the energy storage spring 32, the energy storage spring 32 is always in an energy storage state, the whole secondary amplifying mechanism 3 is in the energy storage state, the movable iron core 23 and the static iron core 24 are still attracted together under the action of the permanent magnet 25, and the whole mechanism is in a stable state.
The coil 21 generates a magnetic field after being electrified, under the action of the magnetic field, the movable iron core 23 and the static iron core 24 are quickly released, one end of the movable iron core 23 impacts the locking mechanism 34, the locking mechanism 34 is separated from the push rod mechanism 31, so that the secondary amplifying mechanism 3 in an energy storage state is opened, the push rod mechanism 31 quickly slides to an initial position under the action of the energy storage spring 32, and meanwhile, the push rod mechanism 31 hooks the trip rod 12 (used for opening and closing the circuit breaker) on the circuit breaker, so that the push rod mechanism 31 can drive the trip rod 12 when returning to the initial position, and the circuit breaker is tripped. When the push rod mechanism 31 returns to the initial position, the movable iron core 23 is driven to be closed with the static iron core 24 again, and one action cycle is completed.
The application, through setting up the specific cooperation connection relation between the movable iron core 23, the static iron core 24, the permanent magnet 25, the push rod mechanism 31, the energy storage spring 32 and the locking mechanism 34, make the release in the application under the signal of the undervoltage release or under the signal of the shunt release, can realize the disconnection of the circuit breaker, namely the release of the application can realize the effects of undervoltage release, can realize the effects of the shunt release, has realized the integration of undervoltage release and shunt release, reduce the overall structure volume of the release. Meanwhile, due to the arrangement of the permanent magnet 25 in the electromagnetic mechanism 2, a smaller magnetic field is generated after the coil 21 is electrified, so that the attraction of the permanent magnet 25 to the movable iron core 23 can be overcome, the movable iron core 23 moves at a high speed to impact the locking mechanism 34 of the secondary amplifying mechanism 3 and unlock the secondary amplifying mechanism 3, and due to the arrangement of the permanent magnet 25, the power of the coil 21 is reduced, and the coil 21 can reliably work under the condition that the rated voltage is as low as 12V. Compared with the existing shunt release, the minimum voltage of the shunt release is 24V, and when the release is used as the shunt release, the application range of the shunt release is enlarged.
Example 2
With reference to fig. 1, compared with the technical scheme of embodiment 1, the trip of the present embodiment further includes an auxiliary alarm mechanism 4, where the auxiliary alarm mechanism 4 is disposed on one side of the bracket 1. The auxiliary alarm mechanism 4 is arranged to enable the release to have an alarm function.
Example 3
With reference to fig. 1 and fig. 3, compared with the technical solution of embodiment 2, the trip of this embodiment, the auxiliary alarm mechanism 4 includes a base plate 41, a return spring 42, an alarm switch 43, an auxiliary switch 44, a link mechanism 45 and a push rod 46, where the alarm switch 43 and the auxiliary switch 44 are respectively disposed at two ends of the base plate 41, one end of the return spring 42 is fixed on the base plate 41, the other end of the return spring 42 is connected with the push rod 46, the push rod 46 is slidably connected with the base plate 41, the push rod 46 is cooperatively connected with the auxiliary switch 44 through a limit structure, the link mechanism 45 is rotationally disposed on the base plate 41, one end of the link mechanism 45 is cooperatively connected with the push rod 46, and the other end of the link mechanism 45 is cooperatively connected with the alarm switch 43.
In practical application, as shown in fig. 7-8, the circuit breaker is provided with a rotating shaft 10 matched with the ejector rod 46, the rotating shaft 10 is provided with a top plate 11, the top plate 11 is in matching connection with the ejector rod 46 in different degrees under the rotation of the rotating shaft 10, and can be divided into three states of closing, opening and free tripping according to different rotation positions of the rotating shaft 10, when the rotating shaft 10 rotates to the opening position, the top plate 11 contacts with the end part of the ejector rod 46 and pushes against the ejector rod 46 to slide on the substrate 41, and as the ejector rod 46 is in matching connection with the auxiliary switch 44 through a limiting structure, the auxiliary switch 44 is subjected to certain pressure due to the movement of the ejector rod 46, so that the auxiliary switch 44 is changed from normally open to normally closed, and signals are output. When the rotating shaft continues to rotate upwards to the free tripping position, one end of the connecting rod mechanism 45 is connected with the ejector rod 46 in a matched manner, the other end of the connecting rod mechanism 45 is connected with the alarm switch 43 in a matched manner, and the connecting rod mechanism 45 is rotationally arranged on the base plate 41, so that the connecting rod mechanism 45 rotates under the action of the ejector rod 46, the other end of the connecting rod mechanism 45 is in contact with the alarm switch 43, the alarm switch 43 is compressed, the alarm switch 43 is changed from normally open to normally closed, and an alarm signal is output. When the rotating shaft 10 rotates to the closing position, the top plate 11 on the rotating shaft 10 is separated from the ejector rod 46, the ejector rod 46 slides towards the direction close to the rotating shaft 10 under the resilience force of the return spring 42 until the rotating shaft 10 is restored to the original state, and at this time, the alarm switch 43 and the auxiliary switch 44 are both normally closed to normally open.
The limiting structure comprises a limiting groove and a limiting protrusion, the side wall of the ejector rod 46, which is close to the reset spring 42, is provided with the limiting groove, the auxiliary switch 44 is provided with the limiting protrusion, and the limiting groove is matched with the limiting protrusion to realize limiting connection of the ejector rod 46 and the auxiliary switch 44.
In practical application, the link mechanism 45 includes a first link 451 and a second link 452, the first link 451 and the second link 452 are hinged on the base plate 41 through a rotating shaft, the first link 451 is connected with the ejector rod 46 in a matching manner, the second link 452 is connected with the alarm switch 43 in a matching manner, and the setting is convenient for realizing the compression of the alarm switch 43 under the movement of the ejector rod 46, so that the alarm switch 43 is changed from normally open to normally closed.
Example 4
In the trip of this embodiment, compared with the technical solution of embodiment 3, a chute (not shown in the drawing) is provided on the base plate 41, and a protrusion (not shown in the drawing) that mates with the chute is provided on the ejector 46. The cooperation of the sliding groove and the protrusion makes the ejector rod 46 slide on the base plate 41, and plays a certain guiding role at the same time, so that the ejector rod 46 is ensured to move up and down on the base plate 41.
Example 5
Referring to fig. 1 and fig. 5, compared with any one of the technical solutions of embodiments 1 to 4, the push rod mechanism 31 includes a base 311 and a push rod 312, the electromagnetic mechanism 2 is disposed below the base 311, the energy storage spring 32 is disposed on the base 311, a latch slot 313 matched with the latch mechanism 34 is disposed on the base 311, an extension portion 314 is disposed at one end of the base 311, the extension portion 314 is perpendicular to the base 311, the push rod 312 is disposed on the extension portion 314, a slide 315 is disposed on the base 311 adjacent to the extension portion 314, a channel 316 is disposed on the extension portion 314 in a penetrating manner, and the channel 316 is communicated with the slide 315.
In practical application, the channel 316 is disposed corresponding to the end of the movable iron core 23 near the latch mechanism 34, so that when the push rod mechanism 31 makes a reciprocating rectilinear motion in the bracket 1, the latch mechanism 34 passes through the slide way 315 and the channel 316, and the latch mechanism 34 is connected with the end of the movable iron core 23 while the latch mechanism 34 is engaged with the latch slot 313, thereby limiting the space between the latch mechanism 34 and the push rod mechanism 31. In practice, the channel 316 is formed by a strip-shaped hole and a circular hole, one end of the strip-shaped hole is communicated with the slideway 315, and the other end of the strip-shaped hole is communicated with the circular hole.
In practical use, as shown in fig. 5, a side plate 318 is disposed at an end of the base 311 away from the extension portion 314, a connecting rod 319 parallel to the base 311 is disposed on the side plate 318, and the locking groove 313 is disposed at an end of the connecting rod 319 away from the side plate 318. This arrangement facilitates the engagement and disengagement of the latch mechanism 34 with the latch slot 313 in the base 311 when the push rod mechanism 31 is in reciprocating rectilinear motion within the bracket 1.
Example 6
Referring to fig. 5, in the trip unit of this embodiment, compared with the technical solution of embodiment 5, the push rod 312 is disposed on one side of the channel 316, and a hook 317 is disposed at an end of the push rod 312. The hook 317 is provided to facilitate the hooking of the push rod 312 with the trip bar, thereby ensuring the trip of the circuit breaker.
Example 7
With reference to fig. 1-2, compared with the technical solution of embodiment 5, the trip device of this embodiment, the latch mechanism 34 includes a latch, a latch elastic member 342 and a latch shaft 343, the latch elastic member 342 is sleeved on the latch shaft 343, the latch is disposed on the latch shaft 343, and two ends of the latch shaft 343 are respectively fixed on the support 1.
In practical application, the lock catch is rotatably disposed on the lock catch shaft 343, the lock catch has a first lock arm 344 and a second lock arm 345, the first lock arm 344 is used for being in snap connection with the lock catch groove 313 on the base 311, and an end surface of the second lock arm 345 is used for being connected with the movable iron core 23.
When the handle 7 is used for pushing the breaker to be buckled, the lever shaft 9 pushes the base 311 to move towards the locking mechanism 34, under the action of the locking elastic piece 342, the first locking arm 344 of the lock catches is scratched into the locking groove 313 and locks the push rod mechanism 31, namely, the limit of the push rod mechanism 31 is realized, and the second locking arm 345 of the lock catches enters the channel 316 and is connected with the movable iron core 23. After the coil 21 is electrified, under the action of a magnetic field, the movable iron core 23 is quickly released, so that the movable iron core 23 impacts the second locking arm 345 of the lock catch, at this time, the first locking arm 344 is separated from the lock catch groove 313 on the base 311, so that the push rod mechanism 31 is released, and the push rod mechanism 31 moves away from the lock catch mechanism 34 under the action of the energy storage spring 32, and quickly returns to the initial position.
In practical application, as shown in fig. 1 and 6, the support 1 is provided with a protection plate 346, a positioning plate 347 is arranged on a side edge of the protection plate 346 far away from the locking mechanism 34, a positioning column 348 is arranged on the positioning plate 347, one end of the energy storage spring 32 is fixed on the positioning column 348, the protection plate 346 is connected with the support 1 in a clamping manner, and the locking mechanism 34 is arranged in a cavity formed between the protection plate 346 and the support 1. This arrangement can ensure that the energy storage spring 32 is fully compressed when the push rod mechanism 31 moves towards the latch mechanism 34, and large energy storage is obtained, so that the push rod mechanism 31 has enough tripping force when released, and the tripping of the circuit breaker is ensured. At the same time, the latch mechanism 34 can be effectively protected.
Example 8
Referring to fig. 2 and fig. 4, compared with the technical solutions of embodiments 1 or 7, the electromagnetic mechanism 2 further includes a yoke 26, a fixing plate 27, and a spring 28, where the yoke 26 is disposed at one end of the coil bobbin 22, the spring 28 is sleeved on the movable iron core 23, one end of the spring 28 is connected with the yoke 26, and the other end of the spring 28 is connected with the fixing plate 27. The spring 28 can be fixed on the movable iron core 23 through the fixing plate 27, when the movable iron core 23 moves towards the direction of the static iron core 24 in the coil framework 22 under the action of the permanent magnet 25, the spring 28 can be compressed, when the coil 21 is electrified, the movable iron core 23 is released under the action of a magnetic field, and under the action of the resilience force of the spring 28, the movable iron core 23 moves towards the direction away from the static iron core 24 rapidly and impacts the locking mechanism 34, so that the locking mechanism 34 is separated from the push rod mechanism 31.
In practical application, annular bosses 29 are circumferentially arranged at two ends of the coil framework 22, and the arrangement of the annular bosses 29 facilitates the placement of the magnet yokes 26 and the arrangement of the permanent magnets 25.
Example 9
Compared with the technical scheme of the embodiment 2, the release further comprises a shell, wherein the bracket 1, the electromagnetic mechanism 2, the secondary amplifying mechanism 3 and the auxiliary alarm mechanism 4 are arranged in the shell. The housing is provided for protecting the bracket 1, the electromagnetic mechanism 2 and the secondary amplifying mechanism 3, and at the same time, the overall structure is made more compact. In practice, the housing comprises a base (not shown) and a frame (not shown) detachably connected to the base. The arrangement facilitates assembly and disassembly.
In practical application, the base is connected with the frame in a clamping manner. The base is provided with a clamping protrusion (not shown in the figure), the frame is provided with a clamping groove (not shown in the figure), and the clamping protrusion is matched with the clamping groove to realize connection between the base and the frame.
In practical application, as shown in fig. 7-8, the housing includes a first housing 51 and a second housing 52, the second housing 52 is communicated with the first housing 51, an opening (not shown in the drawing) is provided at the bottom of the second housing 52, the opening 53 is used for matching a top plate on a rotating shaft with the auxiliary alarm mechanism 4, the secondary amplifying mechanism 3 and the electromagnetic mechanism 2 are disposed in the first housing 51, and the auxiliary alarm mechanism 4 is disposed in the second housing 52.
In practical application, a sliding channel (not shown) is provided on the side wall of the first housing 51, a protrusion 320 is provided on the side wall of the base 311, and the protrusion 320 slides in the sliding channel and passes through the sliding channel to be matched with the lever shaft 9 on the circuit breaker.
Example 10
The embodiment provides a circuit breaker, which comprises the release according to any one of the technical schemes in embodiments 1-9. By adopting the release, the integrated of the shunt release and the under-voltage release is realized by the release, the volume of the whole release structure is greatly reduced, the release is only required to be installed in one placement cavity on the circuit breaker, the partial space is saved for the circuit breaker on the premise of not changing the whole volume of the circuit breaker, the installation of other auxiliary accessories on the circuit breaker can be increased, and further, the other functions of the circuit breaker are increased.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (7)
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| CN202111128818.8A CN113745071B (en) | 2021-09-26 | 2021-09-26 | A trip device and a circuit breaker |
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| CN202111128818.8A CN113745071B (en) | 2021-09-26 | 2021-09-26 | A trip device and a circuit breaker |
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| CN113745071B true CN113745071B (en) | 2025-05-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114188195A (en) * | 2022-01-13 | 2022-03-15 | 法泰电器（江苏）股份有限公司 | Shunt release device |
| CN120637174B (en) * | 2025-06-24 | 2026-02-13 | 裕明电气有限公司 | A trip unit and circuit breaker |
| CN120565354B (en) * | 2025-07-30 | 2025-10-17 | 江苏东西柿科技有限公司 | Phase-separated independent control three-phase switch |
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| CN111986964A (en) * | 2019-05-21 | 2020-11-24 | 杭州泓枫网络科技有限公司 | Release device with permanent magnet |
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| GB2288279B (en) * | 1994-04-08 | 1998-03-11 | Gen Electric | Circuit breaker |
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| CN201112295Y (en) * | 2007-08-10 | 2008-09-10 | 常熟开关制造有限公司(原常熟开关厂） | Auxiliary alarming contact for low pressure breaker |
| CN204271011U (en) * | 2014-12-25 | 2015-04-15 | 常熟开关制造有限公司(原常熟开关厂） | A tripper for a circuit breaker |
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