CN103021743B - Intelligent breaker - Google Patents

Abstract

The invention discloses a kind of intelligent breaker, comprise breaker of plastic casing body, breaker of plastic casing body comprises base and upper cover, and upper cover comprises panel and sidewall; Panel and sidewall are provided with the breach be connected, and are provided with the first communication interface socket that the breach on positive oppose side wall is arranged in upper cover; This intelligent breaker also comprises communication protocols converter; The medial extremity of communication protocols converter housing is positioned at upper cover inside, and is provided with the first communication interface plug matched with the first communication interface socket, and its hull outside end is provided with and second communication interface socket; Communication protocols converter is arranged in breach; Communication protocols converter housing is provided with at least one fastening screw, base or sidewall are provided with the location hole matched with fastening screw, when communication protocols converter slide put in place after, fastening screw pluggable in location hole so that communication protocols converter housing is fixed in breach.The installation of the present invention's communication protocols converter used and use are comparatively convenient.

Description

smart circuit breaker

technical field

The invention belongs to the technical field of circuit breaker structure design, and in particular relates to an intelligent circuit breaker.

Background technique

Compared with most other buses, the Modbus bus itself has many limitations, mainly reflected in low efficiency, poor real-time performance of the system, low communication reliability, high maintenance costs, complex network engineering debugging, unsatisfactory transmission distance, single There are few nodes that can be connected to the bus, and the application is not flexible. However, in the application of industrial field bus, RS485 used by Modbus protocol has a slight advantage in hardware cost and development difficulty, and it is still widely used in China, so it is unrealistic to completely abandon Modbus at this stage, so in practical applications Most of the smart circuit breakers are developed and designed using the Modbus protocol, and then applied to other bus networks through a protocol converter. In addition, the current smart circuit breakers all use external protocol converters for protocol conversion. Good consistency, for example, the performance parameters and settings of smart circuit breakers from different manufacturers are different, and the performance and price of protocol converters from different manufacturers are also different, making it difficult for customers to find a circuit breaker that is more suitable for them. And the supporting protocol converter, resulting in the final cost and performance are always unsatisfactory.

Contents of the invention

The purpose of the present invention is to provide an intelligent circuit breaker with a built-in communication protocol converter.

The technical solution to achieve the purpose of the present invention is: an intelligent circuit breaker, including a molded case circuit breaker body, the molded case circuit breaker body includes a base and an upper cover, and the upper cover includes a panel and a side wall; There are connected gaps, and the first communication interface socket facing the gap on the side wall is arranged in the upper cover; the smart circuit breaker also includes a communication protocol converter; the inner side of the communication protocol converter housing is located on the upper cover Inside, there is a first communication interface plug matched with the first communication interface socket, and the outer end of the housing is provided with a second communication interface socket; the communication protocol converter is located in the gap; the communication protocol At least one positioning pin is provided on the converter housing, and a positioning hole matching the positioning pin is provided on the base or the side wall. When the communication protocol converter slides in place, the positioning pin can be inserted into the positioning hole to The housing of the communication protocol converter is fixed in the notch.

In the above technical solution, the positioning pin is telescopically arranged on the housing of the communication protocol converter.

The structure of the present invention is more compact and reasonable, and the installation and use of the communication protocol converter used are more convenient, and its application range is wider, and it is also convenient for customers to purchase.

Description of drawings

Fig. 1 is a kind of three-dimensional structure schematic diagram of the first structure of the present invention;

Fig. 2 is a schematic diagram of a three-dimensional structure of a communication protocol converter in the smart circuit breaker shown in Fig. 1;

Fig. 3 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in Fig. 2 viewed from another angle;

Fig. 4 is a schematic diagram of an internal structure of the intelligent circuit breaker shown in Fig. 1;

Fig. 5 is a kind of three-dimensional structure schematic diagram of the second structure of the present invention;

Fig. 6 is a schematic diagram of a three-dimensional structure of a communication protocol converter in the smart circuit breaker shown in Fig. 5;

Fig. 7 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in Fig. 6 viewed from another angle;

Fig. 8 is a schematic diagram of an internal structure of the intelligent circuit breaker shown in Fig. 4 .

Detailed ways

(Example 1)

Figures 1 to 4 show the first specific implementation of the present invention, wherein Figure 1 is a schematic diagram of a three-dimensional structure of the first structure of the present invention; Figure 2 is a schematic diagram of the communication protocol converter in the intelligent circuit breaker shown in Figure 1 A schematic diagram of a three-dimensional structure; FIG. 3 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in FIG. 2 viewed from another angle; FIG. 4 is a schematic diagram of an internal structure of the smart circuit breaker shown in FIG. 1 .

This embodiment is an intelligent circuit breaker, including a molded case circuit breaker body 1 , a remote action actuator not shown in the figure and a communication protocol converter 2 fixed on the molded case circuit breaker body 1 .

The molded case circuit breaker body includes a base 11 and an upper cover 12, the upper cover includes a panel 121 and a side wall 122; the panel and the side wall are provided with a connected gap 123, and the upper cover is provided with a The first communication interface socket 14 is set in the gap.

The communication protocol converter is fixed in the gap. The inboard end of the communication protocol converter housing, that is, the end close to the first communication interface socket 14, is located inside the upper cover, and is provided with a first communication interface plug 26 matched with the first communication interface socket. The end, that is, the end away from the first communication interface socket 14, is provided with a second communication interface socket 27;

The housing of the communication protocol converter is provided with a liquid crystal display 21 , a debugging button 22 and two signal indicator lights 23 . One of them is the indicator light of signal uplink, and the other is the indicator light of signal downlink. The liquid crystal display and debugging buttons on the housing of the communication protocol converter are located on the same side of the upper cover as the upper cover panel, making them essentially a part of the operation panel of the molded case circuit breaker body 1 .

The side wall of the upper cover is respectively provided with a guide slider 13 on the walls on both sides of the gap, and the communication protocol converter housing is respectively provided with a guide chute 24 at the two ends facing the guide slider. . The cooperative guidance of the guide chute and the guide slider makes the communication protocol converter housing reciprocate along the direction perpendicular to the side wall with the notch in the upper cover. In practice, the shapes and specific positions of the guide slider 13 and the guide chute 24 can be changed, but all belong to the protection scope of the present invention.

The housing of the communication protocol converter is provided with two positioning pins 25, and the base or the side wall is provided with a positioning hole matched with the positioning pins. When the communication protocol converter slides into place, the positioning pins can be plugged into the Locate the hole to secure the protocol converter housing in the notch.

In this embodiment, the positioning pin is telescopically arranged on the housing of the communication protocol converter. When each positioning pin is retracted, its bottom is inserted into the corresponding positioning hole, thereby positioning the communication protocol converter in the gap. After pressing the positioning pins again, the positioning pins will pop out from the positioning holes, so that the communication protocol converter can be disassembled.

The upper cover is also provided with a return spring 15 for ejecting the communication protocol converter housing along the extending direction of the guide chute, a slide hole 16 for accommodating the return spring, and a slide bar 17 with an anti-off part 171; The slide bar is located in the slide hole, the return spring is sleeved on one end of the slide bar, and the other end of the slide bar abuts against the inner end of the communication protocol converter housing. When the positioning pin is no longer inserted into the positioning hole, the communication protocol converter will be pushed out by the slide bar, so that it can be removed smoothly.

In this embodiment, the communication protocol converter housing is away from the outer end of the first communication interface socket, and is flush with the side wall with a gap in the upper cover, and the second communication interface socket is arranged on the communication protocol converter. on the outer end face.

In this embodiment, the first communication interface socket is a Modbus protocol interface socket, specifically a commonly known serial structure socket. The second communication structure socket is a CAN protocol interface socket or a Devicenet protocol interface socket or a TCP protocol interface socket or a Profibus protocol structure socket.

(Example 2)

Figures 5 to 8 show a second specific implementation of the present invention, wherein Figure 5 is a schematic perspective view of the second structure of the present invention; Figure 6 is a communication protocol converter in the smart circuit breaker shown in Figure 5 A schematic diagram of a three-dimensional structure; FIG. 7 is a schematic diagram of a three-dimensional structure of the communication protocol converter shown in FIG. 6 viewed from another angle; FIG. 8 is a schematic diagram of an internal structure of the smart circuit breaker shown in FIG. 4 .

This embodiment is basically the same as Embodiment 1, except that, as shown in Figures 5 to 8, the outer end of the communication protocol converter housing extends out of the side wall of the upper cover, and part of the housing extends out of the side wall of the upper cover Each side end of each is provided with Profibus communication interface 27, and this is because, if, like embodiment 1, the external Profibus communication plug terminal is inserted along the direction perpendicular to the side wall of the loam cake, so adjacent electrical appliances must Make space; the structure of this embodiment can make the external Profibus communication plug terminal can be inserted into the Profibus communication interface 27 along the direction parallel to the side wall of the upper cover, thereby reducing the overall occupied space. In addition, the position of the positioning bolt 25 in this embodiment is also adjusted accordingly.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims (1)

1. An intelligent circuit breaker, including a molded case circuit breaker body, the molded case circuit breaker body includes a base and an upper cover, and the upper cover includes a panel and a side wall; There is a first communication interface socket directly opposite to the gap on the side wall; the smart circuit breaker also includes a communication protocol converter; the inner end of the communication protocol converter housing is also close to the end of the first communication interface socket It is located inside the upper cover, and is provided with a first communication interface plug matched with the first communication interface socket, and a second communication interface socket is provided at the outer end of the housing, that is, the end far away from the first communication interface socket; a communication protocol converter Located in the gap; the housing of the communication protocol converter is provided with a liquid crystal display, a debugging button and two signal indicator lights; one of which is a signal uplink indicator light, and the other is a signal downlink indicator light; the communication protocol converter The liquid crystal display and debugging buttons on the casing are located on the same side as the upper cover panel, making it essentially a part of the operation panel of the molded case circuit breaker body; there are guide sliders on the walls on both sides of the gap , the communication protocol converter housing is provided with a guide chute on both sides facing the guide slider; the cooperative guidance of the guide chute and the guide slider makes the communication protocol converter housing along the Move back and forth in a direction perpendicular to the side wall with a notch in the upper cover; at least one positioning pin is provided on the communication protocol converter housing, and a positioning hole that matches the positioning pin is provided on the base or the side wall. When the communication protocol After the converter slides into place, the positioning pin can be inserted into the positioning hole to fix the communication protocol converter housing in the notch.