Integrated passive shunt excitation auxiliary integrated release

Abstract

The utility model discloses an integrated passive shunt excitation auxiliary integrated release, relates to the technical field of low-voltage electrical appliances, and solves the problems of large space and the like. Comprising a swing support, a pressing support, a shunt microswitch and an auxiliary microswitch, one side of the top pressing end of the swing support is in top pressing fit with a push rod, and the other side of the top pressing end of the swing support is in top pressing fit with the pressing side of the pressing support; the pressing side of the pressing support abuts against the on-off position of the shunt microswitch and the on-off position of the auxiliary microswitch in a pressing fit mode so as to switch the switch state, and the action side of the pressing support is in linkage connection with the handle and abuts against the connecting end of the swing support in a contact mode. A shunt tripping function and an auxiliary function are integrated, so that the problem that a shunt tripping device and an auxiliary contact are assembled separately in a traditional mode is solved, and the number of parts and the overall size are reduced; therefore, the release is more suitable for an electrical equipment box and a control cabinet which have strict space requirements, and integration of equipment is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field especially a kind of integrated passive type auxiliary integrated release device of division excitation. BACKGROUND

[0002] In today's electrical control field, the release device as a key component in the protection device such as circuit breaker plays a vital role. The division excitation release device is used to control or remotely control the opening of the circuit breaker. When the power voltage is maintained at 70%-110% of the rated control power voltage, the division excitation release device should be able to disconnect the electrical appliance under all operating conditions of the electrical appliance.

[0003] However, with the increasing complexity of electrical systems and the increasing demand of users for equipment state monitoring, simply having a division excitation release function is difficult to meet the actual application scenario. In order to obtain the working state of the release device, the auxiliary information such as circuit on-off, the solution commonly used in the past is to assemble a separate auxiliary contact next to the division excitation release device. Although this method meets the demand for auxiliary function to some extent, it also brings many disadvantages. On the one hand, the additional assembly of auxiliary contacts increases the overall size of the product, which occupies valuable internal space for some electrical equipment boxes and control cabinets with strict space layout requirements, which is not conducive to the miniaturization and integration of the equipment. On the other hand, the assembly process involves the assembly and connection of multiple components, increasing the cost of raw materials and assembly, and subsequent maintenance and repair are time-consuming and labor-intensive due to the complexity of components. SUMMARY

[0004] The utility model discloses a kind of integrated passive type auxiliary integrated release device of division excitation to overcome the defects of prior art, solve the problems such as large space, high cost of existing.

[0005] The utility model discloses the technical scheme: including shell, handle, coil and wiring terminal, handle rotationally connects in shell, coil is fixedly installed in shell, and the output position of coil has telescopic jib;It further includes swing support, pressing support, division excitation microswitch and auxiliary microswitch, the middle position of swing support and pressing support two is respectively hingedly installed in shell, and the both ends of swing support are respectively top pressure end, connecting end, the both sides of pressing support middle position are respectively pressing side, action side, one side of swing support top pressure end is in abutment with jib, the other side of swing support top pressure end is in abutment with the pressing side of pressing support, and the pressing side of pressing support is respectively in abutment with the opening and closing position of division excitation microswitch and auxiliary microswitch to switch switch state, the action side of pressing support is linked with handle, and the action side of pressing support is in abutment with the connecting end of swing support, and reset tension spring is also hooked in shell, and reset tension spring is also hooked with the action side of pressing support and is fixed.

[0006] By integrating the auxiliary function and the split function, the split function and the auxiliary contact are avoided in the traditional assembly, the number of parts and the overall volume are reduced, the split function is more suitable for the electrical equipment box and the control cabinet with strict space requirements, the miniaturization and integration of the equipment are facilitated, the use of raw materials is reduced, the assembly process is simplified, and the production cost is reduced, the split function and the auxiliary function are cooperated through the swing bracket and the pressing bracket, the split function micro switch and the auxiliary micro switch can accurately switch the switch state, and more comprehensive control and monitoring functions are provided for the electrical system.

[0007] In a possible design, the action side of the pressing bracket is connected with the handle through a pull rod, a trip pull spring is hooked on the pull rod, and one end of the trip pull spring is also fixed in the shell.

[0008] By adopting the above design, the trip pull spring can provide necessary elastic force for the trip action, so that the trip process is more smooth, and the reliability and stability of the trip action can be ensured.

[0009] In a possible design, the connecting end of the swing bracket is also hinged with a trip bracket, and the trip bracket is in touch with the pull rod to trigger the trip action when the connecting end is swung under stress.

[0010] By adopting the above design, when the connecting end is swung under stress, the trip bracket can trigger the trip action by touching the pull rod, so that the sensitivity and reliability of the trip action are improved, and the circuit can be quickly cut off when needed.

[0011] In a possible design, the top pressing end of the swing bracket is fixed with a connecting rod, and the connecting rod is connected with the trip position of the matched circuit breaker outside the shell.

[0012] By adopting the above design, the connection between the trip device and the circuit breaker is more close and reliable, so that the action of the trip device can be accurately transmitted to the circuit breaker, and the function of quickly disconnecting the circuit is realized.

[0013] In a possible design, the wiring end is divided into a split wiring end and an auxiliary wiring end, the split function micro switch is connected with the split wiring end and the coil through wires, and the auxiliary micro switch is connected with the auxiliary wiring end.

[0014] By adopting the above design, the circuit connection is clearer and more standardized, the reliability of the circuit is improved, and the installation and maintenance are facilitated.

[0015] In a possible design, the split function micro switch and the auxiliary micro switch are combined to form a double micro switch.

[0016] With the above design, the space occupation is reduced, and the double micro switch can control two circuits simultaneously, thereby improving the control efficiency and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic view of the open state of the utility model;

[0018] Fig. 2 is a structural schematic view of the closed state of the utility model;

[0019] Fig. 3 is an exploded view of a specific embodiment of the utility model;

[0020] 1, shell; 2, handle; 21, pull rod; 22, tripping tension spring; 3, coil; 31, top rod; 4, terminal; 41, shunt terminal; 42, auxiliary terminal; 5, swing support; 51, top pressing end; 52, connecting end; 6, pressing support; 61, pressing side; 62, action side; 7, double micro switch; 8, reset tension spring; 9, tripping support. DETAILED DESCRIPTION

[0021] As Figs. 1-3The illustrated integrated passive type auxiliary integrated tripping device includes a shell 1, a handle 2, a coil 3, a terminal 4, a swing bracket 5, a pressing bracket 6, a tripping micro switch and an auxiliary micro switch. The handle 2 is rotatably connected to the shell 1, and the handle 2 can be connected to the handle 2 of the circuit breaker to form a linkage. The coil 3 is fixedly installed in the shell 1, and the output position of the coil 3 has a telescopic top rod 31. The coil 3 receives an external electrical signal, and the top rod 31 receives an electrical signal to extend or retract. The middle positions of the swing bracket 5 and the pressing bracket 6 are respectively hingedly installed in the shell 1, and a fulcrum shaft is formed in the shell 1 for respectively rotatably connecting the swing bracket 5 and the pressing bracket 6. The lower and upper ends of the swing bracket 5 are respectively a pressing end 51 and a connecting end 52. The two sides of the middle position of the pressing bracket 6 are respectively a pressing side 61 and an action side 62. One side of the pressing end 51 of the swing bracket 5 is in pressing cooperation with the top rod 31, and the other side of the pressing end 51 of the swing bracket 5 is in pressing cooperation with the pressing side 61 of the pressing bracket 6. The pressing side 61 of the pressing bracket 6 is in pressing cooperation with the opening and closing positions of the tripping micro switch and the auxiliary micro switch to switch the switch state. The action side 62 of the pressing bracket 6 is in linkage with the handle 2, and the action side 62 of the pressing bracket 6 is in abutting contact with the connecting end 52 of the swing bracket 5. A reset tension spring 8 is also hooked and fixed to the action side 62 of the pressing bracket 6 in the shell 1. The cooperation of the swing bracket 5, the pressing bracket 6 and the micro switch makes the tripping action closely related to and synchronized with the triggering of the auxiliary function. When the tripping device receives a signal to start the opening action, the top rod 31 pushes the pressing end 51 of the swing bracket 5, and then links the pressing bracket 6, so as to switch the states of the tripping micro switch and the auxiliary micro switch, and accurately feedback the tripping device working state and circuit on-off information.

[0022] By integrating the tripping function and the auxiliary function in one tripping device, the traditional method of assembling auxiliary contacts beside the tripping device is abandoned, the space occupied by the product in the electrical equipment box, control cabinet and the like is saved. The number of parts is reduced, and the originally separate auxiliary contacts and their supporting connecting parts, fixing parts and the like are no longer needed, directly reducing the raw material procurement cost.

[0023] The action side 62 of the pressing bracket 6 is connected with the handle 2 through a pull rod 21. A tripping tension spring 22 is arranged on one side of the pull rod 21, and the two ends of the tripping tension spring 22 are respectively hooked and fixed to the pull rod 21 and the shell 1. When the system needs to trip, the elastic potential energy stored in the tripping tension spring 22 is quickly released, the action of the pressing bracket 6 is accelerated, the tripping and the auxiliary function are quickly responded, and the response speed of the tripping device is further improved.

[0024] The connecting end 52 of the swing bracket 5 is also hinged with a tripping bracket 9, which is in touch with the pull rod 21 to trigger the tripping action of the pull rod 21 when the connecting end 52 is forced to swing, so that the tripping bracket 9 is triggered to drive the pull rod 21 to move.

[0025] The top pressing end 51 of the swing bracket 5 is fixed with a connecting rod, which extends out of the shell 1 and is connected with a tripping position of a matched circuit breaker. The connecting rod connects the swing bracket 5 with the tripping position of the external circuit breaker, so as to ensure the mechanical linkage between the tripper and the circuit breaker.

[0026] The terminal 4 is divided into a separate excitation terminal 41 and an auxiliary terminal 42, the separate excitation micro switch is connected with the separate excitation terminal 41 and the coil 3 through wires, and the auxiliary micro switch is connected with the auxiliary terminal 42. The separate excitation micro switch has two contacts, the separate excitation terminal 41 has two terminal posts, the two contacts of the separate excitation micro switch are connected with the live terminal of the coil 3 and one of the terminal posts through wires, and the other terminal post is connected with the zero terminal of the coil 3 through wires. The auxiliary micro switch is connected with the auxiliary terminal 42. The auxiliary micro switch has three contacts, and the auxiliary terminal 42 also has three terminal posts, and the contacts and the terminal posts are connected correspondingly.

[0027] The separate excitation micro switch and the auxiliary micro switch are combined into a double micro switch 7 (in the figure, the two are combined into a double micro switch), which is more compact in space utilization and reduces the assembly difficulty. Meanwhile, the double structure is beneficial to synchronous control and signal coordination, ensures that the triggering of the separate excitation function and the auxiliary function is highly consistent in time, avoids monitoring errors or electrical faults caused by asynchronous switch actions, and improves the overall performance and stability of the product.

[0028] The action principle of the utility model is as follows:

[0029] I. Initial closing state

[0030] The tripper is installed at a corresponding position on one side of a matched circuit breaker, and the reset tension spring 8 is in a stretched state, the tension of the reset tension spring 8 acts on the action side 62 of the pressing bracket 6, so that the pressing bracket 6 remains in a stable state, and the pressing side 61 and the opening and closing positions of the separate excitation micro switch and the auxiliary micro switch maintain the initial contact state. The swing bracket 5 is separated from the top rod 31 under the action of no external force, and the connecting end 52 abuts against the action side 62 of the pressing bracket 6. The handle 2 is in the initial closing position, connected with the pressing bracket 6 through the pull rod 21, and the tripping tension spring 22 is also in a certain stretched energy storage state.

[0031] II. Tripping action

[0032] When the external control system detects an electrical fault or receives a remote opening instruction, an electrical signal is transmitted to the coil 3, which generates a magnetic field when energized, driving the retractable jackscrew 31 to extend rapidly. After the jackscrew 31 extends, it presses against the pressing end 51 of the swing bracket 5, causing the swing bracket 5 to rotate counterclockwise about the central hinge point. During rotation, on the one hand, the other side of the pressing end 51 of the swing bracket 5 presses against the pressing side 61 of the pressing bracket 6, causing the pressing bracket 6 to rotate about its central hinge point. The pressing side 61 presses against the contact of the auxiliary microswitch, changing the contact state of the auxiliary microswitch and the auxiliary microswitch, and the auxiliary microswitch. The state information of the tripping device triggered, circuit on-off, etc. is fed back to the external monitoring system in real time through the auxiliary wiring terminal 42.

[0033] On the other hand, the connecting end 52 of the swing bracket 5 swings, and when the connecting end 52 is forced to swing, the tripping bracket 9 hinged thereto also swings, the tripping bracket 9 triggers the pull rod 21, the pull rod 21 is displaced under force, and the tripping pull spring 22 is released. The elastic potential energy released by the tripping pull spring 22 acts on the pull rod 21, which drives the handle 2 to rotate to the tripping state.

[0034] Three, reset after opening

[0035] After troubleshooting, manually operate the handle 2 to reset. When the handle 2 is pulled, the handle 2 rotates about the rotating connection point, pulling the action side 62 of the pressing bracket 6 through the pull rod 21, overcoming the tension of the reset pull spring 8, and releasing the pressing side 61 of the pressing bracket 6. The pressing of the split microswitch and the auxiliary microswitch, the switch returns to the initial state. At the same time, as the handle 2 rotates, the swing bracket 5, tripping bracket 9 and other components linked with the pressing bracket 6 gradually return to their respective hinge points and reset under the action of the reset pull spring 8, the jackscrew 31 retracts, the tripping pull spring 22 re-stretches and stores energy, and the entire tripping device returns to the initial state, waiting for the next work instruction.

Claims

1. An integrated passive shunt trip unit, comprising a housing (1), a handle (2), a coil (3), and a terminal block (4), wherein the handle (2) is rotatably connected to the housing (1), the coil (3) is fixedly installed inside the housing (1), and the output position of the coil (3) has a retractable push rod (31), characterized in that: It also includes a swing bracket (5), a pressing bracket (6), a shunt micro switch and an auxiliary micro switch. The middle positions of the swing bracket (5) and the pressing bracket (6) are respectively hinged and installed in the housing (1). The two ends of the swing bracket (5) are the pressing end (51) and the connecting end (52), respectively. The two sides of the middle position of the pressing bracket (6) are the pressing side (61) and the actuating side (62), respectively. One side of the pressing end (51) of the swing bracket (5) is pressed and engaged with the push rod (31), and the other side of the pressing end (51) of the swing bracket (5) is engaged with the push rod (31). The pressing side (61) of the pressing bracket (6) is pressed against and cooperates with the pressing side (61) of the pressing bracket (6); the pressing side (61) of the pressing bracket (6) is pressed against and cooperates with the opening and closing positions of the shunt micro switch and the auxiliary micro switch to switch the switch state; the operating side (62) of the pressing bracket (6) is linked to the handle (2); and the operating side (62) of the pressing bracket (6) is in contact with the connecting end (52) of the swing bracket (5); a reset spring (8) is also hooked inside the housing (1); and the reset spring (8) is also hooked and fixed to the operating side (62) of the pressing bracket (6).

2. The integrated passive shunt trip unit according to claim 1, characterized in that: A pull rod (21) is connected between the action side (62) of the pressing bracket (6) and the handle (2). A release spring (22) is hooked on the pull rod (21), and one end of the release spring (22) is fixed inside the housing (1).

3. The integrated passive shunt trip unit according to claim 2, characterized in that: The connecting end (52) of the swing bracket (5) is also hinged with a release bracket (9). The release bracket (9) engages with the pull rod (21) to trigger the release bracket (9) to drive the pull rod (21) to trigger the release action when the connecting end (52) is subjected to force and swings.

4. The integrated passive shunt trip unit according to claim 1 or 2, characterized in that: A connecting rod is fixed at the top pressure end (51) of the swing bracket (5), and the connecting rod extends out of the housing (1) and is connected to the tripping position of the matched circuit breaker.

5. The integrated passive shunt trip unit according to claim 1 or 2, characterized in that: The terminal (4) is divided into a shunt terminal (41) and an auxiliary terminal (42). The shunt micro switch is connected to the shunt terminal (41) and the coil (3) respectively through wires. The auxiliary micro switch is connected to the auxiliary terminal (42).

6. The integrated passive shunt trip unit according to claim 1 or 2, characterized in that: The shunt micro switch and the auxiliary micro switch are combined to form a double micro switch (7).

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