CN218677013U - Auxiliary contact for universal circuit breaker - Google Patents
Auxiliary contact for universal circuit breaker Download PDFInfo
- Publication number
- CN218677013U CN218677013U CN202223418695.4U CN202223418695U CN218677013U CN 218677013 U CN218677013 U CN 218677013U CN 202223418695 U CN202223418695 U CN 202223418695U CN 218677013 U CN218677013 U CN 218677013U
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- contact
- circuit breaker
- pull rod
- auxiliary contact
- connecting rod
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Abstract
The utility model relates to the technical field of low-voltage circuit breakers, in particular to an auxiliary contact for an universal circuit breaker, which comprises a contact support, a contact module, a microswitch, a pull rod and a connecting rod; the contact modules are connected with the micro switch and arranged in the contact support; one end of the pull rod is arranged in the contact support and is provided with a trapezoidal boss structure for shifting the microswitch, and the other end of the pull rod is connected with the connecting rod through a first pin shaft; the connecting rod is hinged with the fixed support on the rotating shaft of the operating mechanism through a second pin shaft. The utility model provides an auxiliary contact for universal circuit breaker, simple structure, convenient assembling. The utility model discloses simple structure, convenient assembling through increasing the trigger stroke, can prevent the auxiliary contact resilience problem that moving contact resilience phenomenon leads to, shortens the time that divide-shut brake reaches steady state by a wide margin, reaches the steady state and only needs 1 ~ 10ms; the mechanical life and the electrical life of the auxiliary contact are prolonged.
Description
Technical Field
The utility model relates to a low-voltage circuit breaker technical field especially relates to an auxiliary contact for universal circuit breaker.
Background
With the great application of the PLC intelligent control technology in the power system (particularly the wind power system), higher response requirements are provided for the signal feedback of the auxiliary contact of the circuit breaker, so that the system can be accurately and timely controlled, and the power supply quality is ensured, therefore, the response of the opening/closing signal of the auxiliary contact of the circuit breaker becomes more important.
In the traditional auxiliary contact switching process, one end of a hard lever is in contact with a driving piece on an operating mechanism of the circuit breaker, the other end of the hard lever is in contact with a micro switch on the auxiliary contact, in the opening process of the circuit breaker, the rotating arm driving piece of the operating mechanism drives the hard lever of the auxiliary contact, and the hard lever drives the micro switch on the contact of the contact to switch between normally open and normally closed.
Generally, the micro-switch on the auxiliary contact is converted from a normally open contact to a normally closed contact at the moment when the circuit breaker is in place. But universal circuit breaker operating device is the rigid material mostly, because the separating brake speed is very fast, operating device drives the moving contact when separating brake together, and the moving contact motion has certain initial velocity and quality, when separating brake when target in place and touch spacing axle, the moving contact receives reaction force pulling operating device spiral arm, one section distance of toward closing a floodgate direction motion again, leads to the moving contact can kick-back fast after reaching the biggest opening distance, and this kick-back can lead to current auxiliary switch the spring condition to appear. When the opening is in place and just touches the limiting shaft, the auxiliary contact is switched to a normally closed contact from a normally open contact, but when the auxiliary contact moves for a certain distance in the closing direction after touching the limiting shaft, the auxiliary contact is switched to the normally open contact from the normally closed contact, and the auxiliary contact is switched circularly until rebounding stops. Therefore, frequent switching occurs when the auxiliary contacts acquire the on-off state signals of the circuit breaker, so that the switching of the contacts is unreliable, 50-100 ms is needed for reaching the steady state, and the signals fed back to a client are inaccurate, so that misoperation of electric appliances on a circuit and even greater loss can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an omnipotent circuit breaker is with supplementary contact to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
an auxiliary contact for a universal circuit breaker comprises a contact support, a contact module, a microswitch, a pull rod and a connecting rod; the plurality of contact modules are connected with the micro switch and arranged in the contact bracket; one end of the pull rod is arranged in the contact support, a boss structure used for shifting the microswitch is arranged, the boss structure is a trapezoidal boss structure, and the other end of the pull rod is connected with the connecting rod through a first pin shaft; the connecting rod is hinged with the fixed support on the rotating shaft of the operating mechanism through a second pin shaft.
Preferably, a first shaft hole and a second shaft hole are respectively formed at two ends of the connecting rod; the first shaft hole is a strip-shaped hole, the second shaft hole is a round hole, the first pin shaft is limited in the first shaft hole, and the second pin shaft is limited in the second shaft hole.
Preferably, a return spring is arranged on the pull rod, one end of the return spring is fixed on the spring limiting protrusion of the pull rod, and the other end of the return spring is fixed on the contact support.
Preferably, the number of the boss structures is multiple, and the boss structures are arranged on two sides of the pull rod.
Preferably, the number of the connecting rods is two.
Preferably, the fixing bracket is an L-shaped bracket.
The utility model has the advantages that:
the utility model provides a pair of omnipotent circuit breaker is with supplementary contact, simple structure, convenient assembling. The utility model can prevent the problem of the rebound of the auxiliary contact caused by the rebound phenomenon of the moving contact by increasing the trigger stroke, greatly shorten the time for the opening and closing switch to reach the steady state, and only needs 1-10 ms for reaching the steady state; the mechanical life and the electrical life of the auxiliary contact are prolonged.
Drawings
Fig. 1 is a schematic structural view of an auxiliary contact according to an embodiment of the present invention;
fig. 2 is a partial schematic structural view of an auxiliary contact according to an embodiment of the present invention;
fig. 3 is a schematic view of an internal connection structure of an auxiliary contact according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the embodiment of the present invention in which the pull rod is connected to the return spring;
fig. 5 is a schematic structural view of a contact module and a micro switch according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a pull rod in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a connecting rod according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a fixing bracket according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a rotating shaft of an operating mechanism in an embodiment of the present invention;
in the figure: 1-a contact support, 2-a contact module, 3-a microswitch, 4-a pull rod, 5-a connecting rod, 6-a boss structure, 7-a first pin shaft, 8-a second pin shaft, 9-an operating mechanism rotating shaft, 10-a fixed support, 11-a first shaft hole, 12-a second shaft hole, 13-a fixed point, 14-a reset spring and 15-a spring limit protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
As shown in fig. 1 to 9, the utility model provides an auxiliary contact for a universal circuit breaker, which comprises a contact support 1, a contact module 2, a microswitch 3, a pull rod 4 and a connecting rod 5; the contact modules 2 are connected with the micro switch 3 and arranged in the contact support 1; one end of the pull rod 4 is arranged in the contact support 1, and is provided with a boss structure 6 for shifting the microswitch 3, the boss structure 6 is a trapezoidal boss structure, and the other end of the pull rod is connected with the connecting rod 5 through a first pin shaft 7; the connecting rod 5 is hinged with a fixed support 10 on an operating mechanism rotating shaft 9 through a second pin shaft 8.
In this embodiment, when the universal circuit breaker is opened, the micro switch 3 and the boss structure 6 of the pull rod 4 are not in contact. When the switching-on operation is performed through the operating mechanism, the rotating shaft 9 of the operating mechanism rotates clockwise, the connecting rod 5 is driven to move through the fixing support 10, the pull rod 4 is driven to move downwards, and the micro switch 3 is shifted through the boss feature 6 of the pull rod 4, so that the interior of the contact module 2 is converted.
In this embodiment, a return spring 14 is disposed on the pull rod 4, one end of the return spring 14 is fixed on a spring limit protrusion 15 of the pull rod 4, and the other end of the return spring is fixed on the contact support 1. When the brake is opened through the operating mechanism, the rotating shaft 9 of the operating mechanism rotates anticlockwise, the connecting rod 5 is driven to move through the fixed support 10, and therefore the pull rod 4 loses the downward pulling force effect of the connecting rod 5 and moves upwards under the elastic force effect of the return spring 14; finally, the position of the boss feature 6 is changed to be not in contact with the microswitch 3, so that the state of the microswitch 3 is changed, and the interior of the contact module 2 is converted.
In this embodiment, two ends of the connecting rod 5 are respectively provided with a first shaft hole 11 and a second shaft hole 12; the first shaft hole 11 is a strip-shaped hole, the second shaft hole 12 is a round hole, the first pin shaft 7 is limited in the first shaft hole 11, and the second pin shaft 8 is limited in the second shaft hole 12. First round pin axle 7 can be at the displacement in the bar hole of first axle hole 11, when can preventing that the circuit breaker from taking place to kick-back, pull rod 4 receives 5 stimulations of connecting rod and follows the motion.
The auxiliary contact in the embodiment is stable and reliable, most parts are metal parts and plastic parts which are connected, contact conduction is achieved, and the structure is not prone to deformation. Owing to adopt trapezoidal boss structure 6 of micro-gap switch 3 cooperation, increased operating device pivot 9 and triggered micro-gap switch 3's stroke, adopt the connecting rod 5 that is equipped with the bar hole to be connected with pull rod 4, can't show the position that changes pull rod 4 when operating device pivot 9 kick-backs, consequently mechanism kick-backs and can not change micro-gap switch 3's state, has avoided the moving contact to kick-back and has leaded to the condition that auxiliary switch kick-backed.
In this embodiment, the number of the boss structures 6 is multiple, the boss structures are arranged on two sides of the pull rod 4, and the contact module 2 can realize at most 8 groups of independent contacts, so that the use by a user is facilitated. The micro switch 3 has high dustproof effect, and preferably has the grade above IP 6X. The number of the connecting rods 5 is two, the two connecting rods are consistent in specification and are respectively arranged on two sides of the pull rod 4 or the fixed support 10. The fixing support 10 is an L-shaped support, a fixing point 13 is arranged on the operating mechanism rotating shaft 9, the fixing point 13 is of a plane structure and is provided with a screw hole, one side of the fixing support 10 is fixed on the fixing point 13 through a screw, and the other side of the fixing support is hinged with the connecting rod 5.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model provides a pair of omnipotent circuit breaker is with supplementary contact, simple structure, convenient assembling. The utility model can prevent the problem of the rebound of the auxiliary contact caused by the rebound phenomenon of the moving contact by increasing the trigger stroke, greatly shorten the time for the opening and closing switch to reach the steady state, and only needs 1-10 ms for reaching the steady state; the mechanical life and the electrical life of the auxiliary contact are prolonged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (6)
1. An auxiliary contact for a universal circuit breaker is characterized by comprising a contact support, a contact module, a microswitch, a pull rod and a connecting rod; the plurality of contact modules are connected with the micro switch and arranged in the contact bracket; one end of the pull rod is arranged in the contact support, a boss structure used for shifting the microswitch is arranged, the boss structure is a trapezoidal boss structure, and the other end of the pull rod is connected with the connecting rod through a first pin shaft; the connecting rod is hinged with the fixed support on the rotating shaft of the operating mechanism through a second pin shaft.
2. The auxiliary contact for the universal circuit breaker according to claim 1, wherein the connecting rod is provided with a first shaft hole and a second shaft hole at two ends thereof; the first shaft hole is a strip-shaped hole, the second shaft hole is a round hole, the first pin shaft is limited in the first shaft hole, and the second pin shaft is limited in the second shaft hole.
3. The auxiliary contact for the universal circuit breaker as claimed in claim 1, wherein the pull rod is provided with a return spring, one end of the return spring is fixed on the spring limit protrusion of the pull rod, and the other end of the return spring is fixed on the contact support.
4. The auxiliary contact for the universal circuit breaker as claimed in claim 1, wherein the number of the convex structures is plural, and the convex structures are disposed on both sides of the pull rod.
5. The auxiliary contact for a universal circuit breaker according to claim 2, wherein the number of said connecting rods is two.
6. The auxiliary contact for a universal circuit breaker according to claim 1, wherein said mounting bracket is an L-shaped bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223418695.4U CN218677013U (en) | 2022-12-20 | 2022-12-20 | Auxiliary contact for universal circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223418695.4U CN218677013U (en) | 2022-12-20 | 2022-12-20 | Auxiliary contact for universal circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218677013U true CN218677013U (en) | 2023-03-21 |
Family
ID=85550923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223418695.4U Active CN218677013U (en) | 2022-12-20 | 2022-12-20 | Auxiliary contact for universal circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218677013U (en) |
-
2022
- 2022-12-20 CN CN202223418695.4U patent/CN218677013U/en active Active
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