CN220106392U - Plastic case circuit breaker with microcomputer protection function - Google Patents

Abstract

The utility model relates to the technical field of circuit protection devices, in particular to a molded case circuit breaker with a microcomputer protection function, which comprises a molded case circuit breaker main body and a microcomputer protection device connected with the molded case circuit breaker main body through a wire insulation sleeve, wherein a conducting ring is arranged at the end part of the wire insulation sleeve connected with the molded case circuit breaker main body, a copper core is arranged in the wire insulation sleeve, a binding hole is formed in the conducting ring, the copper core exposed outside the wire insulation sleeve penetrates through the binding hole and is bound and fixed on the conducting ring, a lacerating blade for cutting off the wire insulation sleeve is fixedly arranged on the inner wall of the conducting ring, the molded case circuit breaker main body consists of a rear side main box and a front end cover fixedly arranged on the front side surface of the rear side main box through a plurality of fastening screws, and two mutually symmetrical conducting convex columns are fixedly arranged on the inner wall of the rear side main box. The utility model is convenient to recharge the conductive ring and use.

Description

Plastic case circuit breaker with microcomputer protection function

Technical Field

The utility model relates to the technical field of circuit protection devices, in particular to a molded case circuit breaker with a microcomputer protection function.

Background

The molded case circuit breaker is a protection device capable of automatically cutting off current after the current exceeds trip setting, the molded case circuit breaker is used, the occurrence of dangerous situations such as electric shock can be reduced, the electricity safety is improved, at present, microcomputer protection devices are all installed on the molded case circuit breaker in most large-scale power transmission equipment, the microcomputer protection devices are voltage and current protection and measurement and control devices, the microcomputer protection devices mainly comprise components such as a high integration level, a bus is not out of a chip singlechip, a high-precision current and voltage transformer, a high-insulation-strength outlet intermediate relay, a high-reliability switch power supply module and the like, and the molded case circuit breaker provided with the microcomputer protection devices has microcomputer protection functions and is also called as a microcomputer protection circuit breaker.

The patent of the utility model with the publication number of CN102214907A discloses a microcomputer protection power-losing protection scheme. The circuit breaker is added on the detection loop of the original microcomputer protection device, two overcurrent coils of the circuit breaker are connected into the loop, two pairs of opening and closing contacts are connected, and when an overcurrent signal is detected, current directly flows through the two overcurrent coils of the circuit breaker through the conversion of the opening and closing contacts, so that the circuit breaker trips.

Although this technical scheme has the advantage that avoided because microcomputer protection device loses the electricity and causes the unable action of current protection, but this technical scheme is when specifically using, because the terminal on the microcomputer protection device is general fixed mounting has corresponding binding post, utilize binding post and the positive negative pole in the moulded case circuit breaker to contact and switch on and accomplish the wiring operation, but the binding post is direct fixed mounting on the wiring, after the overload takes place, the condition that the cable of terminal tip burns out can appear, the cable of this burning out position can not continue to use, but the tip wire that keeps away from the binding post still can continue to use, conventional operation method cuts out the tip wire of burning out, connect the terminal at the position of not burning out and continue to use, but terminal and wire fixed connection, be difficult to dismantle and reload the operation to the terminal, in addition, cut out the partial wire of burning out still need with the help of external tool, bring inconvenience for the user. In view of this, we propose a molded case circuit breaker with microcomputer protection function.

Disclosure of Invention

The utility model aims to provide a molded case circuit breaker with a microcomputer protection function, so as to solve the defects in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a take microcomputer protection's moulded case circuit breaker, includes moulded case circuit breaker main part and with moulded case circuit breaker main part between the microcomputer protection device who is connected through the insulating cover of wire, the tip that the insulating cover of wire is connected with moulded case circuit breaker main part is provided with the conducting ring, the inside of the insulating cover of wire is provided with the copper core, be provided with binding hole on the conducting ring, expose outside the conducting ring the copper core passes binding hole and bind and fix on the conducting ring, fixed mounting has the blade that cuts out that is used for carrying out the operation to the insulating cover of wire on the inner wall of conducting ring.

Preferably, the copper core is connected between the molded case circuit breaker main body and the microcomputer protection device for a circuit conducting operation.

Preferably, the lacerating blade is used for cutting the end of the burnt wire insulation sheath after lacerating along the surface of the wire insulation sheath.

Preferably, the molded case circuit breaker main body is composed of a rear side main machine box and a front end cover fixedly installed on the front side surface of the rear side main machine box through a plurality of fastening screws, two mutually symmetrical conductive convex columns are fixedly installed on the inner wall of the rear side main machine box, and the conductive rings are abutted to the front side surfaces of the conductive convex columns through the fastening screws so as to facilitate normal wiring operation.

Preferably, two mutually symmetrical threading holes for threading operation are formed in the top wall of the rear side main box, so that wiring operation is facilitated.

Preferably, rectangular plates are fixedly installed on the left side surface and the right side surface of the rear side main box, and the rectangular plates are used for being fixed by fastening screws.

Preferably, end plates are arranged on the left side surface and the right side surface of the microcomputer protection device, and bolt holes are formed in the end plates.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model is bound and fixed between the copper core and the conducting ring, so that the conducting ring is conveniently detached after the end part of the conducting wire insulating sleeve is burnt, the copper core and the conducting wire insulating sleeve which are burnt out are cut off, and then the conducting ring is arranged on the unburnt copper core, so that the installation operation is convenient.

2. According to the utility model, the conductive convex column is arranged in the molded case circuit breaker main body, so that the conductive part is hidden in the molded case circuit breaker main body, the effect of safety protection is achieved, and the situation of conduction caused by false touch is avoided.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

fig. 3 is a schematic structural view of a molded case circuit breaker body according to the present utility model;

FIG. 4 is an enlarged view of the utility model at A in FIG. 2;

fig. 5 is a schematic view of a part of the structure of the molded case circuit breaker body of the present utility model.

The meaning of each reference numeral in the figures is:

1. a molded case circuit breaker body; 10. a rear main body box; 11. a front end cover; 12. conductive posts; 13. a threading hole; 14. a rectangular plate;

2. microcomputer protection device; 20. an end plate; 21. bolt holes; 22. a wire insulation sleeve; 221. a copper core; 23. a conductive ring; 231. binding holes; 24. a lacerating blade.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a take moulded case circuit breaker of microcomputer protection function, including moulded case circuit breaker main part 1 and with moulded case circuit breaker main part 1 between the microcomputer protection device 2 of being connected through wire insulation cover 22, wire insulation cover 22 is provided with conducting ring 23 with moulded case circuit breaker main part 1 connected's tip, wire insulation cover 22's inside is provided with copper core 221, be provided with binding hole 231 on the conducting ring 23, expose the copper core 221 outside wire insulation cover 22 and pass binding hole 231 and bind and fix on conducting ring 23, the other tip of copper core 221 is with microcomputer protection device 2 in positive and negative pole electric connection, be used for normal circuit to switch on operation, and microcomputer protection device 2 comprises parts such as high integration level, the bus does not go out chip singlechip, high accuracy current-voltage transformer, high dielectric strength export intermediate relay, high reliable switching power supply module, be current conventional technology here and will not be repeated.

In the present embodiment, the copper core 221 is connected between the molded case circuit breaker main body 1 and the microcomputer protection device 2 for a circuit conducting operation.

Specifically, a breaking blade 24 for cutting the wire insulation cover 22 is fixedly installed on the inner wall of the conductive ring 23, and the breaking blade 24 is used for cutting the end of the burnt wire insulation cover 22 after being broken along the surface of the wire insulation cover 22.

Further, the molded case circuit breaker main body 1 is composed of a rear side main case 10 and a front end cover 11 fixedly mounted on the front side surface of the rear side main case 10 through a plurality of fastening screws, two mutually symmetrical conductive convex columns 12 are fixedly mounted on the inner wall of the rear side main case 10, a conductive ring 23 is abutted on the front side surface of the conductive convex columns 12 through the fastening screws, normal wiring operation is facilitated, and the conductive ring 23 is abutted on the conductive convex columns 12 for normal circuit conduction operation.

In addition, two mutually symmetrical threading holes 13 for threading operation are provided on the top wall of the rear main body case 10, facilitating the wiring operation.

It should be noted that, rectangular plates 14 are fixedly mounted on both the left and right sides of the rear main casing 10, and the rectangular plates 14 are used for fixing by fastening screws; end plates 20 are arranged on the left side surface and the right side surface of the microcomputer protection device 2, bolt holes 21 are arranged in the end plates 20, and fastening screws are convenient to fix the end plates 20, so that the microcomputer protection device 2 is fixed.

Finally, it should be noted that the components of the conductive ring 23, the copper core 221, the molded case circuit breaker main body 1, the microcomputer protection device 2, the conductive convex column 12 and the like in the present utility model are all general standard components or components known to those skilled in the art, the structure and principle of the components are all known by the skilled person through technical manuals or known through conventional experimental methods, at the idle position of the present device, all the electric devices mentioned above, which refer to the power element, the electric device and the adaptive controller and the power supply, are connected through the wire insulation sleeve, the specific connection means should refer to the working principle in the present utility model, the electric connection between the electric devices is completed according to the sequential working sequence, and the detailed connection means is known in the art.

When the molded case circuit breaker with microcomputer protection function is used, after the copper core 221 and the wire insulation sleeve 22 pass through the threading hole 13, the conductive ring 23 is propped against the front side surface of the conductive convex column 12, and is in threaded connection with the conductive convex column 12 by using a fastening screw, and the conductive ring 23 is pressed on the conductive convex column 12 by using the end head of the fastening screw to finish the installation operation;

when the copper core 221 and the wire insulation sleeve 22 near the end part of the conductive ring 23 are burnt, the whole power supply is disconnected firstly, then the conductive ring 23 is sleeved on the wire insulation sleeve 22 at the burnt part, the burnt part is cut off by the aid of the lacerating blade 24, then the wire insulation sleeve 22 with partial length is cut off continuously backwards, the copper core 221 at the unburnt part is exposed, then the copper core 221 is continuously bound and fixed on the conductive ring 23, and the installation operation is repeated, so that the conductive ring 23 is convenient to reuse.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a take microcomputer protection function's moulded case circuit breaker, includes moulded case circuit breaker main part (1) and microcomputer protection device (2) that are connected through wire insulation cover (22) between moulded case circuit breaker main part (1), its characterized in that: the end that wire insulation cover (22) and moulded case circuit breaker main part (1) are connected is provided with conducting ring (23), the inside of wire insulation cover (22) is provided with copper core (221), be provided with on conducting ring (23) and bind hole (231), expose outside wire insulation cover (22) copper core (221) pass bind hole (231) and bind and fix on conducting ring (23), fixed mounting has on the inner wall of conducting ring (23) and is used for carrying out lacerating blade (24) of cutting off operation to wire insulation cover (22).

2. The molded case circuit breaker with microcomputer protection function according to claim 1, wherein: the copper core (221) is connected between the molded case circuit breaker main body (1) and the microcomputer protection device (2) for conducting operation of a circuit.

3. The molded case circuit breaker with microcomputer protection function according to claim 1, wherein: the ripping blade (24) is used for cutting the end of the burnt wire insulation sleeve (22) after ripping along the surface of the wire insulation sleeve (22).

4. The molded case circuit breaker with microcomputer protection function according to claim 1, wherein: the plastic case breaker main body (1) is composed of a rear side main machine box (10) and a front end cover (11) fixedly installed on the front side surface of the rear side main machine box (10) through a plurality of fastening screws, two mutually symmetrical conductive convex columns (12) are fixedly installed on the inner wall of the rear side main machine box (10), and the conductive ring (23) is abutted to the front side surface of the conductive convex columns (12) through the fastening screws.

5. The molded case circuit breaker with microcomputer protection function according to claim 4, wherein: two mutually symmetrical threading holes (13) for threading operation are formed in the top wall of the rear side main box (10).

6. The molded case circuit breaker with microcomputer protection function according to claim 5, wherein: rectangular plates (14) are fixedly mounted on the left side surface and the right side surface of the rear side main box (10), and the rectangular plates (14) are used for being fixed by fastening screws.

7. The molded case circuit breaker with microcomputer protection function according to claim 6, wherein: end plates (20) are arranged on the left side surface and the right side surface of the microcomputer protection device (2), and bolt holes (21) are formed in the end plates (20).