CN102693881B - Breaker - Google Patents

Abstract

The invention discloses a breaker, comprising a housing and a controller casing, wherein the housing comprises a pedestal and a face shield, the controller casing is arranged in the housing, the face shield comprises an observation window and a sealing cover, the observation window is arranged on the face shield, the size of the observation window is larger than that of the controller casing; the sealing cover is movably connected with the observation window, the sealing cover comprises a sealing cover frame and a transparent plate, an inner frame surface of the sealing cover frame is provided with a plurality of clamping grooves, clamping members mating with the clamping grooves are correspondingly arranged on the transparent plate, the transparent plate is arranged on the sealing cover frame via the clamping members and the clamping grooves, and the sealing cover frame is arranged on the observation window via a connecting member. The breaker is simple in structure, convenient in dismounting, and can effectively simplify steps in dismounting the controller.

Description

a circuit breaker

technical field

The invention relates to a circuit breaker.

Background technique

The universal circuit breaker is suitable for the power distribution network with AC 50Hz, rated voltage 380V, 660V, and rated current 200A-6300A. It is mainly used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. The circuit breaker has a variety of intelligent protection functions, which can achieve selective protection, precise action, avoid unnecessary power outages, and improve power supply reliability.

During the use of the universal circuit breaker, because the circuit board in the controller is relatively easy to age, the service life is relatively short. In order to ensure the safety of use, some competent departments will stipulate that the controller of the universal circuit breaker must be replaced after a certain number of years of use. However, the existing circuit breaker structure makes it very inconvenient to replace the controller, and the operation is very cumbersome. First, it is necessary to disassemble the circuit breaker casing, and then disassemble the control box, and then replace the circuit board in the controller. Bring great inconvenience to the whole power supply system.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a circuit breaker, which has a simple structure and is easy to assemble and disassemble. It is not necessary to disassemble the circuit breaker casing when replacing the controller, and the controller is also convenient to be taken out from the circuit breaker casing.

A technical solution to achieve the above object is: a circuit breaker, including a housing, a controller box, the housing includes a base and a mask, the controller box is located in the housing, and the mask includes an observation window , a cover, the observation window is located on the mask, and its size is greater than the size of the controller box; the cover is movably connected with the observation window, and the cover is composed of a cover frame and a transparent plate, and the inside of the cover frame A number of card slots are provided on the frame surface, and a number of clips matched with the clip slots are correspondingly provided on the transparent plate, and the transparent plate is installed on the cover frame through the clips and the clip slots. The enclosure frame is installed on the observation window through the connecting piece.

In the above-mentioned circuit breaker, the connectors are several hooks and grooves, the hooks are located on the outer frame surface of the cover frame, and several grooves are correspondingly provided on the observation window to cooperate with the hooks. .

In the above-mentioned circuit breaker, a locking element is also provided on the face shield, and the locking element is composed of a slide groove, a push button and a spring at the tail of the push button. The slide groove is located on the cover frame, so The push button and the spring are arranged in the chute, and the front end of the push button is engaged with the inside of the mask.

In the above circuit breaker, the controller box includes a base, an upper box detachably connected to the base and a circuit board located in the controller box, the base and the upper box are respectively composed of two A side surface, an end surface, a top surface, and a bottom surface are respectively provided with an upper fixing part on both sides of the upper box body, and an upper fixing part is respectively provided on the two sides of the base to connect with the lower fixing part. The upper box is installed on the base through the upper and lower fixing pieces; there are four corners on the top and side, bottom and side of the upper box respectively with a guide A guide rail corresponding to the guide groove is provided at the four corners of the top surface and the side surface, the bottom surface and the side surface of the base, and the upper box is installed on the base through the guide rail and the guide groove. above; the circuit boards are all installed on the upper box of the controller.

In the above-mentioned circuit breaker, the upper fixing part is an upper screw hole column, and the lower fixing part is a lower screw hole column, and the upper screw hole column and the lower screw hole column connect the base and the upper screw hole column through long-leg screws. The box connection is fixed.

In the above circuit breaker, the guide groove is a right-angle groove, and the guide rail is a right-angle pin.

A technical scheme of the box structure of the upper controller of the universal circuit breaker is adopted in the present invention, that is, the sealing cover and the locking original are arranged on the circuit breaker housing, and the corresponding matching lower parts are respectively arranged on the base of the controller and the upper box. Screw holes and upper screw holes, pins and grooves make the structure of the circuit breaker simple, easy to disassemble and assemble, and can effectively simplify the replacement steps of the controller.

Description of drawings

Fig. 1 is the structural exploded schematic diagram of a kind of circuit breaker of the present invention;

Fig. 2 is a structural exploded schematic diagram of a controller box of a circuit breaker of the present invention;

Fig. 3 is a structural schematic diagram of a locking element of a circuit breaker according to the present invention.

Detailed ways

Please refer to Fig. 1, Fig. 2 and Fig. 3, in order to better understand the technical solution of the present invention, the following will be described in detail through specific embodiments in conjunction with the accompanying drawings:

A circuit breaker of the present invention includes a housing, a controller box 1, the housing includes a base 2 and a mask 3, the controller box 1 is located in the housing, the mask 3 includes an observation window 5, a cover 6, and the observation window 5 is located on the mask 3, and its size is greater than the size of the controller box 1; the cover 6 is movably connected with the observation window 5, and the cover 6 is composed of a cover frame 61 and a transparent plate 62, and the inner frame of the cover frame 61 There are several card slots 611 on the surface, and a number of clips 621 matching with the clip slots 611 are correspondingly provided on the transparent plate 62. The transparent plate 62 is installed on the cover frame 61 through the clips 621 and the clip slots 611, and the cover frame 61 is installed on the observation window through a connecting piece, the connecting piece can be a pivot mechanism, and the connecting piece can also be a plurality of hooks 612 and grooves 512, the hooks 612 are located on the outer frame surface of the cover frame, and the observation The window 5 is correspondingly provided with a plurality of locking grooves 512 to cooperate with the locking hooks 612;

The mask 3 is also provided with a locking element 7, which is composed of a chute 71, a push button 72 and a spring 73 positioned at the tail of the push button, the chute 71 is located on the cover frame 61, and the push button 72 and spring 73 are arranged in the chute 71, and the front end of the push button 72 is engaged with the inner side of the mask 3. On the one hand, the locking element 7 plays the role of further fixing the cover 6 on the mask 3; Vibration of the enclosure 6 can be avoided when the device is running and vibrating;

The controller case 1 comprises a base 11, an upper case 12 detachably connected to the base 11 and a circuit board 4 positioned in the controller case, the base 11 and the upper case 12 are respectively composed of two sides, an end face, Composed of a top surface and a bottom surface, an upper fixing member is respectively provided on both sides of the upper box body 12, and a lower fixing member corresponding to the upper fixing member is respectively provided on the two sides of the base 11. parts, the upper box 12 is installed on the base 11 through the upper fixing part and the lower fixing part, the upper fixing part can be an upper screw hole column 121, and the lower fixing part can be a lower screw hole column 111, and the upper screw hole column 121 and the lower screw hole column 111 connect and fix the base 11 and the upper box body 12 through the long-leg screw 8; four corners on the top surface and the side surface, the bottom surface and the side surface of the upper box body 12 are respectively provided with a guide groove, four corners on the top surface and side, bottom surface and side of the base are provided with a guide rail corresponding to the guide groove, and the upper box is installed on the On the base, the guide groove can be a right-angle groove 122, the guide rail can be a right-angle pin 112, and the circuit board 4 is installed on the upper box of the controller.

When the controller needs to be replaced, first push the push button 72 to squeeze the spring 73 to deform, so that the push button 72 and the spring 73 are disengaged from the mask, and then pull the hook 612 on the cover 6 from the upper case of the circuit breaker with a little force. 11 from the groove 512, so as to completely remove the cover 6, so that you can reach into the observation window 5, loosen the long-leg screws 8 connecting the base 11 and the upper box 12, and put the controller upper box 12 Pull it out, the four pins 112 on the base 11 slide for a certain distance on the guide rail formed by the four grooves 122, which helps to slowly separate the circuit boards 4 in the controller, so that each circuit board The current on 4 is disconnected. When the upper box body 12 is completely disengaged from the base 11, since the circuit board 4 on the controller is installed on the upper box body 12, only a new circuit board 4 needs to be installed for replacement. The upper box body 12 gets final product, after changing new upper box body 12, can install the upper box body 12 according to the opposite action of dismounting the upper box body 12 described above again.

The circuit breaker of the present invention has simple structure, convenient assembly and disassembly, and can effectively simplify the replacement steps of the controller.

The present invention has been described in detail above with reference to the embodiments of the accompanying drawings, and those skilled in the art can make various changes to the present invention according to the above description. Therefore, some details in the embodiments should not be construed as limiting the present invention, and the present invention will take the scope defined by the appended claims as the protection scope of the present invention.

Claims (4)

1. a circuit breaker, comprises housing, controller box, and described housing comprises pedestal and face shield, and described controller box is positioned at housing, it is characterized in that, described face shield comprises watch window, sealing cover,

Described watch window is positioned on face shield, and its size is greater than described controller box size;

Described sealing cover is flexibly connected with watch window, this sealing cover is comprised of sealing cover frame and transparent panel, the inside casing face of sealing cover frame is provided with some draw-in grooves, correspondingly on transparent panel be provided with the fastener that some and described draw-in groove matches, described transparent panel is arranged on described sealing cover frame by described fastener and draw-in groove, described sealing cover frame is arranged on watch window by connector

On described face shield, be also provided with a locking member, this locking member is comprised of chute, push button and the spring that is positioned at push button afterbody, and described chute is positioned on described sealing cover frame, and described push button and spring are located in described chute, push away the inner side that the front end of turning round is fastened on face shield.

2. a kind of circuit breaker according to claim 1, it is characterized in that, described controller box comprises base, is removably connected in the upper box on base and is positioned at the circuit board of controller box, described base and upper box are all comprised of two sides, an end face, an end face, a bottom surface respectively

On the two sides of described upper box, be respectively equipped with a upper fixing element, be respectively equipped with a lower fixture with fixed part corresponding matching on two sides of described base, upper box is arranged on base by upper fixing element and lower fixture;

At the end face of described upper box and four corners on side, bottom surface and side, be respectively equipped with a guide groove, in the end face of described base and four corners on side, bottom surface and side, be respectively equipped with a guide rail with described guide groove corresponding matching, upper box is arranged on described base by described guide rail and guide groove; Described circuit board is all arranged on described controller upper box.

3. a kind of circuit breaker according to claim 2, is characterized in that, fixed part is a upper screw hole column, and described lower fixture is a lower screw hole column, and upper screw hole column and lower screw hole column are connected and fixed base and upper box by long pin screw.

4. a kind of circuit breaker according to claim 2, is characterized in that, described guide groove is a square groove, and described guide rail is square pin.