CN210925929U - Circuit breaker delay output device - Google Patents

Abstract

A circuit breaker delay output device belongs to the technical field of low-voltage electrical appliances. Including the support and all install rotating member and the time delay subassembly on the support, the circuit breaker include operating device, operating device include a main shaft, the main shaft on still fixed swing piece that is equipped with, characteristics are: the circuit breaker time delay output device also comprises a working rod which is also arranged on the bracket, after the circuit breaker performs a closing action, a swinging piece on the operating mechanism drives the rotating piece to rotate, the rotating piece triggers the working rod to act after rotating, and then triggers the time delay assembly to act, and when the time delay assembly acts in place, a moment signal is output. The advantages are that: the circuit breaker outputs a delay time after being switched on, the requirement of the circuit breaker is met, the structure occupies small space, and the requirement of miniaturization of the circuit breaker is met.

Description

Circuit breaker delay output device

Technical Field

The utility model belongs to the technical field of low-voltage apparatus, concretely relates to circuit breaker time delay output device.

Background

A circuit breaker is a protective electrical device disposed between a power source and a load device to protect the load device and a power line from a circuit fault (e.g., a large current due to a short circuit, a ground fault, etc.) that may occur in the circuit.

The MCR function of the circuit breaker is: when closing the circuit breaker to detect whether a fault occurs in the power line, if the main contacts are contacted and a fault current is detected, the circuit breaker must be immediately cut without maintaining an allowable delay time preset on the smart controller (this time value is long) to reduce damage of the current line and the load.

Fig. 1 to 4 are schematic diagrams of a delay output device in a conventional circuit breaker, where the conventional circuit breaker includes a controller and an operating mechanism, the controller includes a delay output device, the delay output device includes a bracket 11, and a rotating member 12 and a delay assembly 14 both mounted on the bracket 11, and the rotating member 12 is rotatably disposed on the bracket 11. When the circuit breaker performs a closing action, the main shaft on the operating mechanism rotates to drive the swinging piece on the main shaft to swing, the swinging piece swings to drive the rotating piece 12 to rotate, the rotating piece 12 triggers the time delay assembly 14 to act after rotating, and the time delay assembly 14 outputs a time signal after the action is completed.

As shown in fig. 3 and 4, the delay assembly 14 includes a weight plate 141, a restoring member 142, a micro switch 143, and a mounting bracket 144, and the weight plate 141, the restoring member 142, and the micro switch 143 are all mounted on the mounting bracket 144. The action process of the delay component 14 is as follows: after the rotating member 12 rotates, the weight plate 141 is unlocked, the weight plate 141 rotates under the restoring force of the restoring member 142, and after the action is completed, the weight plate 141 triggers the microswitch 143 to output a time signal.

The above components are that the rotating member 12 directly drives the delay assembly 14, i.e. drives the counterweight plate 141 to rotate, therefore, the delay assembly 14 must be located on one side of the rotating member 12, so the delay assembly 14 often occupies the middle space of the controller, and the width of the controller must meet the requirement of accommodating the rotating member 12 and the delay assembly 14, which is not favorable for the miniaturization of the circuit breaker.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the structure of the delay output device of the existing circuit breaker. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

Disclosure of Invention

The utility model aims to provide a circuit breaker time delay output device, it can export a time delay moment after the circuit breaker closes a floodgate, satisfies the demand of circuit breaker, and this structure occupation space is little simultaneously, satisfies the miniaturized requirement of circuit breaker.

The utility model discloses a task is accomplished like this, a circuit breaker time delay output device, include the support and all install rotating member and the time delay subassembly on the support, the circuit breaker include operating device, operating device include a main shaft, the main shaft on the fixed swing piece that is equipped with, circuit breaker time delay output device still include one and install the working rod on the support equally, after the circuit breaker carries out the combined floodgate action, the last swing piece of operating device drives the rotating member rotates, the rotating member rotates the back trigger working rod action, and then triggers the time delay subassembly action, works as the time delay subassembly action output an hour signal after targetting in place.

In a specific embodiment of the present invention, the support is provided with a fitting support, the rotating member is rotatably disposed on the fitting support, the operating rod is slidably disposed on the fitting support, and the delay assembly is mounted on an end of the support.

In another specific embodiment of the present invention, the rotating member is rotatably disposed on the mating bracket through a rotating shaft, and the rotating member has a locking portion; the utility model discloses a time delay subassembly, including work pole, joint portion, support, joint portion, the one end of work pole stretches out the cooperation support and forms one and the time delay subassembly complex end that stretches out, and the cover is equipped with the elastic component on the work pole, the elastic component be located stretch out between end and the cooperation support, joint portion unblock the work pole after, the elastic component drive the work pole stretch out.

In another specific embodiment of the present invention, the time delay assembly includes a mounting bracket and a weight plate, a restoring member, and a micro switch all mounted on the mounting bracket, the mounting bracket is mounted on the bracket, the weight plate is rotatably disposed on the mounting bracket, the restoring member provides restoring force for the weight plate, and the micro switch receives the trigger of the matching plate and outputs a time signal.

In another specific embodiment of the present invention, the weight plate is provided with an unlocking shaft and a trigger shaft, the extension end of the working rod is unlocked after the unlocking shaft, the return member drives the weight plate to rotate, so that the trigger shaft pushes the micro switch to trigger the micro switch to output a time signal.

In yet another specific embodiment of the present invention, the restoring member is a torsion spring, one end of which abuts against the weight plate, and the other end of which abuts against the bracket.

The utility model discloses a and then a concrete embodiment, the installing support on be equipped with an installation axle, the weight plate still include one and rotate the mounting hole, the epaxial cover of installation have the reply piece, and pass the rotation mounting hole, at last at the tip card jump ring of installation axle.

In the present invention, the first and second mounting holes are formed on the mounting bracket, and the first and second mounting holes are used for fixing the mounting bracket to the mounting bracket.

In yet another specific embodiment of the present invention, a collision end for colliding with the weight plate to release the energy of the weight plate is disposed on the fitting bracket of the bracket.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: compared with the prior art, the utility model discloses through the work lever linkage between well rotating member and the time delay subassembly for the rotating member need not adjacently with the time delay subassembly, can reduce the demand to controller space on, thereby makes the volume reduction of controller, realizes the miniaturization of circuit breaker.

Drawings

Fig. 1 is a schematic side view of a delay output device in a circuit breaker controller according to the prior art.

Fig. 2 is another schematic diagram of a delay output device in a circuit breaker controller according to the prior art.

Fig. 3 is a schematic side view of a circuit breaker delay assembly according to the prior art.

Figure 4 is another side schematic view of a circuit breaker delay assembly according to the prior art.

Fig. 5 is the schematic structural diagram of the circuit breaker of the present invention.

Fig. 6 is a schematic diagram of a side structure of the delay output device in the circuit breaker controller.

Fig. 7 is another schematic side structure diagram of the time output device in the circuit breaker controller of the present invention.

Fig. 8 is an exploded view of the delay assembly of the present invention.

Fig. 9 is the initial state diagram of the delay output device of the circuit breaker controller.

Fig. 10 is a schematic diagram of the end state of the delay output device of the circuit breaker controller according to the present invention.

In the figure: 1. a controller; 11. the locking device comprises a bracket, a 111 matching bracket, a 1111 collision end, a 12 rotating piece, a 121 clamping part, a 13 working rod, a 131 extension end, a 132 elastic piece, a 14 delay assembly, a 141 counterweight plate, a 1411 unlocking shaft, a 1412 triggering shaft, a 1413 rotating installation hole, a 142 return piece, a 143 microswitch, a 144 installation bracket, a 1441 matching groove, a 1442 first installation opening, a 1443 second installation opening and a 145 installation shaft; 2. closing an electromagnet; 3. an operating mechanism 31, a main shaft 311, a swinging piece; 100. and a clamp spring.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 5, the present invention relates to a circuit breaker delay output device, the circuit breaker includes a controller 1, an operating mechanism 3, and a contact system, the operating mechanism 3 drives the contact system to move, so as to realize the closing and opening movement. The contact system comprises a moving contact and a fixed contact. The controller 1 is arranged at one side of the operating mechanism 3, and when a fault occurs, the controller 1 triggers the operating mechanism 3 to act. The operating mechanism 3 comprises a main shaft 31, when the operating mechanism 3 performs closing and opening actions, the main shaft 31 rotates to drive a moving contact in the contact system to swing so as to realize contact or separation with the fixed contact, thereby realizing closing or opening of the circuit breaker. The main shaft 31 is further fixedly provided with a plurality of swinging pieces 311, the number of the swinging pieces 311 is equal to the number of poles of the circuit breaker, and the swinging pieces 311 positioned below the controller 1 are matched with the controller 1.

As shown in fig. 5, the operating mechanism 3 is provided with a closing electromagnet 2, and the closing electromagnet 2 is used for triggering the operating mechanism 3 to perform a closing operation. Normally, the closing electromagnet 2 is disposed at the top of the operating mechanism 3, and when an external command is issued, the closing electromagnet 2 operates to trigger the operating mechanism 3 to perform a closing operation.

As shown in fig. 5, the controller 1 is an intelligent part of a circuit breaker and is therefore also referred to as an intelligent controller. The controller 1 is typically located on one side of the actuator 3 so that the controller 1 can actuate the actuator 3 by triggering or activating a controller valve assembly on the actuator 3. In order to realize the MCR function of the circuit breaker, it is usually necessary to turn off the protection of the MCR at a moment so that the circuit breaker enters normal three-phase protection. For this purpose, the controller 1 should have a delay output device inside to ensure that a time signal is output to meet the time interval of the design requirement, and thus meet the expected requirement for the MCR function.

As shown in fig. 6, the circuit breaker delay output device includes a bracket 11, and a rotating member 12, a working lever 13 and a delay assembly 14, all mounted on the bracket 11. After the operating mechanism 3 performs a closing action, the rotating member 12 is driven to rotate, the rotating member 12 triggers the working rod 13 to act after rotating, and further triggers the delay assembly 14 to act, and when the delay assembly 14 acts in place, a moment signal is output. Since the rotary member 12 is linked to the time delay unit 14 via the operating rod 13, the rotary member 12 does not need to be adjacent to the time delay unit 14, and the space requirement for the controller 1 can be reduced.

As shown in fig. 6 and 7, a mating bracket 111 is installed in the bracket 11, and the mating bracket 111 is installed inside the bracket 11, i.e., in the inner cavity of the bracket 11. The matching support 111 is provided with a rotating part 12 and a working rod 13, the rotating part 12 is rotatably arranged on the matching support 111, and the working rod 13 is slidably arranged on the matching support 111. The rotating member 12 is locked and buckled on the working rod 13, the rotating member 12 is driven by the swinging piece 311 of the main shaft 31 to rotate, the working rod 13 unlocks the action of the time delay assembly 14, and a time signal is output after the action of the time delay assembly 14 is finished. The delay assembly 14 may be located at one end of the rack 11 and does not occupy the space of the middle portion of the rack 11, so that the rack 11 can be reduced, the size of the controller 1 can be reduced, and the circuit breaker can be miniaturized.

As shown in fig. 7, the rotating member 12 is generally a metal bracket, and is formed by bending a metal plate. The rotating member 12 is rotatably disposed on the fitting bracket 111 through a rotating shaft, and the rotating shaft of the rotating member 12 is perpendicular to the operating rod 13. The rotating member 12 has a clamping portion 121, and the clamping portion 121 is clamped with the operating rod 13.

As shown in fig. 7, the operating rod 13 is slidably disposed on the engaging bracket 111. Specifically, the working rod 13 is inserted into the matching bracket 111. One end of the operating rod 13 extends out of the engaging bracket 111 to form an extending end 131 engaged with the delay assembly 14. The working rod 13 is sleeved with an elastic member 132, and the elastic member 132 is located between the protruding end 131 and the mating bracket 111. When the protruding end 131 approaches the mating bracket 111, the elastic member 132 is compressed; when the protruding end 131 is away from the mating bracket 111, the elastic member 132 is released. Preferably, the elastic member 132 is a compression spring, such as a helical cylindrical compression spring.

As shown in fig. 8, the delay assembly 14 includes a mounting bracket 144, and a weight plate 141, a return member 142, and a micro switch 143, all mounted on the mounting bracket 144. The mounting bracket 144 uniformly realizes the mounting and positioning of the parts, and ensures that the matching between the parts meets the design requirements. Specifically, the weight plate 141 is rotatably disposed on the mounting bracket 144, the restoring member 142 provides restoring force for the weight plate 141, and the micro switch 143 receives the trigger of the weight plate 141 and outputs a time signal.

With continued reference to fig. 8, the weight plate 141 is generally a disk-shaped plate made of metal. The counterweight plate 141 is provided with an unlocking shaft 1411, a trigger shaft 1412 and a rotary mounting hole 1413. The unlocking shaft 1411 is used for cooperating with the working rod 13, that is, the protruding end 131 of the working rod 13 unlocks the weight plate 141 by unlocking the unlocking shaft 1411. The trigger shaft 1412 pushes the paddle of the micro switch 143 to trigger the micro switch 143 to output a timing signal. In this embodiment, the weight plate 141 is horizontally disposed, that is, the rotation central axis of the weight plate 141 is perpendicular to the bottom surface of the mating bracket 111.

With continued reference to fig. 8, the return member 142 acts on the weight plate 141 to provide a rotational force to the weight plate 141 to drive the weight plate 141 to rotate. The restoring member 142 is a torsion spring, one end of which abuts against the weight plate 141, and the other end of which abuts against a reference object which is stationary relative to the weight plate 141, and is sleeved on the mounting shaft 145 of the mounting bracket 144, so as to provide power for the weight plate 141. In this embodiment, one end of the torsion spring abuts against the trigger shaft 1412, and the other end abuts against the bracket 11. Of course, one end of the torsion spring may abut against other positions of the weight plate 141, such as the unlocking shaft 1411.

Referring to fig. 8, the micro switch 143 is mounted on the mounting bracket 144, and the micro switch 143 is connected to a connection line, which can send a time signal sent by the micro switch 143 to an internal processing unit of the controller 1. The installation position and the installation angle of the micro switch 143 are matched with the trigger shaft 1412.

Referring to fig. 8, the mounting shaft 145 may be integrally formed with the mounting bracket 144, or may be formed separately from the mounting bracket 144 and then fixed together. The mounting shaft 145 is a circular shaft, which passes through the restoring member 142, then passes through the rotary mounting hole 1413 of the weight plate 141, and finally catches a snap spring 100 at the end of the mounting shaft 145 to prevent the restoring member 142 and the weight plate 141 from being separated from the mounting shaft 145. The mounting bracket 144 is provided with a first mounting hole 1442 and a second mounting hole 1443 which are matched with the bracket 11, so that when the mounting bracket 144 is mounted on the bracket 11, relatively fixed mounting can be realized. More preferably, the mounting bracket 144 is further provided with a fitting groove 1441 for limiting the rotation angle of the weight plate 141. The engagement groove 1441 may engage with the unlocking shaft 1411 or the triggering shaft 1412 or other shaft. In this embodiment, it is preferable to select the cooperation with the trigger shaft 1412.

As shown in fig. 7 to 10, the mating bracket 111 of the bracket 11 is provided with a collision end 1111 for colliding with the weight plate 141 to release the weight plate 141. Specifically, the strike end 1111 facilitates the discharge of energy from the rotating weight plate 141 by striking an unlocking shaft 1411 on the weight plate 141.

Fig. 9 and fig. 10 show the working process of the circuit breaker delay output device, wherein fig. 9 shows the initial state, fig. 10 shows the final state, and the specific process is:

referring to fig. 9 in combination with other figures, at this time, when the circuit breaker performs a closing operation, the main shaft 31 of the operating mechanism 3 rotates, the swinging piece 311 on the main shaft 31 swings, and after the swinging piece 311 corresponding to the controller 1 swings, the rotating member 12 is driven to rotate, the rotating member 12 rotates to unlock the working rod 13, the working rod 13 is driven by the elastic member 132 thereon to extend the extending end 131 of the working rod 13, at this time, the extending end 131 no longer presses the unlocking shaft 1411 on the weight plate 141, and under the action of the returning member 142, the weight plate 141 rotates, and the trigger shaft 1412 thereon rotates along with the rotation until contacting the micro switch 143, and the micro switch 143 is triggered to output a time signal to the processing unit in the controller 1, and at this time, the state of fig. 10 is entered. Technical scheme the time length of time delay among the main restoring force that depends on the quality of counter weight plate 141 and elastic component 132. When the breaker is opened, the state of fig. 10 returns to the state of fig. 9, and the process is similar and the direction is reversed, which will not be described in detail.

Claims (9)

1. The utility model provides a circuit breaker time delay output device, includes support (11) and all installs rotating member (12) and time delay subassembly (14) on support (11), the circuit breaker include operating device (3), operating device (3) include a main shaft (31), main shaft (31) on fixed swing piece (311) that are equipped with, its characterized in that: the circuit breaker time delay output device further comprises a working rod (13) which is also installed on the support (11), after the circuit breaker is switched on, a swinging piece (311) on the operating mechanism (3) drives the rotating piece (12) to rotate, the rotating piece (12) triggers the working rod (13) to act after rotating, and then triggers the time delay assembly (14) to act, and when the time delay assembly (14) acts in place, a time signal is output.

2. A circuit breaker delay output device according to claim 1, wherein a mating bracket (111) is installed in the bracket (11), the rotary member (12) is rotatably installed on the mating bracket (111), the operating rod (13) is slidably installed on the mating bracket (111), and the delay assembly (14) is installed at one end of the bracket (11).

3. The delay output device of a circuit breaker according to claim 2, wherein said rotary member (12) is rotatably disposed on the mating bracket (111) through a rotating shaft, said rotary member (12) having a catching portion (121); one end of the working rod (13) extends out of the matching support (111) to form an extending end (131) matched with the time delay assembly (14), the working rod (13) is sleeved with an elastic piece (132), the elastic piece (132) is located between the extending end (131) and the matching support (111), the clamping part (121) is unlocked, the working rod (13) is driven, and the elastic piece (132) drives the working rod (13) to extend out.

4. A circuit breaker delay output device according to claim 3, wherein the delay assembly (14) comprises a mounting bracket (144), and a weight plate (141), a restoring member (142), and a microswitch (143) all mounted on the mounting bracket (144), the mounting bracket (144) is mounted on the bracket (11), the weight plate (141) is rotatably disposed on the mounting bracket (144), the restoring member (142) provides restoring force for the weight plate (141), and the microswitch (143) receives the trigger of the weight plate (141) and outputs a time signal.

5. The circuit breaker delay output device according to claim 4, wherein the counterweight plate (141) is provided with an unlocking shaft (1411) and a triggering shaft (1412), and after the protruding end (131) of the working rod (13) unlocks the unlocking shaft (1411), the restoring member (142) drives the counterweight plate (141) to rotate, so that the triggering shaft (1412) pushes the microswitch (143) to trigger the microswitch (143) to output a time signal.

6. The delay output device of a circuit breaker as claimed in claim 4, wherein said restoring member (142) is a torsion spring having one end abutting against the weight plate (141) and the other end abutting against said bracket (11).

7. The delay output device of a circuit breaker according to claim 4, wherein the mounting bracket (144) is provided with a mounting shaft (145), the weight plate (141) further comprises a rotary mounting hole (1413), the mounting shaft (145) is sleeved with the return member (142) and passes through the rotary mounting hole (1413), and finally a snap spring (100) is clamped at the end of the mounting shaft (145).

8. The delay output device of the circuit breaker according to claim 4, wherein the mounting bracket (144) is provided with a first mounting port (1442) and a second mounting port (1443), and the first mounting port (1442) and the second mounting port (1443) are used for being matched with the bracket (11) to realize the fixed mounting of the mounting bracket (144) and the bracket (11).

9. A circuit breaker delay output device according to claim 4, wherein the engaging bracket (111) of the bracket (11) is provided with a collision end (1111) for colliding with the weight plate (141) to release the weight plate (141).

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