CN111540648B

CN111540648B - Small-sized circuit breaker

Info

Publication number: CN111540648B
Application number: CN202010175091.8A
Authority: CN
Inventors: 向国庆; 刘忠; 陈武奇
Original assignee: ANDELI GROUP CO LTD
Current assignee: ANDELI GROUP CO LTD
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2022-07-29
Anticipated expiration: 2040-03-13
Also published as: CN111540648A

Abstract

The invention discloses a miniature circuit breaker, which comprises an installation shell and an upper cover, wherein the upper cover is installed at the top of the installation shell, a cavity for installing an electromagnetic component and a mechanical transmission component is reserved in the installation shell, an installation part for fixing the installation shell with the upper cover is fixed on the outer side of the installation shell, and an opening cover assembly convenient for overhauling of components in the installation shell is arranged on the upper cover.

Description

Small-sized circuit breaker

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a miniature circuit breaker.

Background

The Miniature Circuit Breaker (the english name: Miniature Circuit Breaker) is also called Miniature Circuit Breaker (Micro Circuit Breaker), is suitable for the overload and short-Circuit protection of the alternating current 50/60Hz rated voltage 230/400V, rated current to 63A line, and can also be used for the infrequent operation switching of the line under normal conditions. The miniature circuit breaker is mainly used in various places such as industrial, commercial, high-rise and civil houses.

The miniature circuit breaker used in the house is generally arranged at a high place of an entrance, does not influence normal life and saves space, because the installation is hidden, and the use frequency is lower, the circuit breaker is not frequently used, so that the circuit breaker is easy to be polluted by dust when standing still and needs to be overhauled, the existing circuit breaker is generally overhauled for half a year or a year, a shell needs to be opened during the overhaul, the dust removal treatment is carried out on an inlet wire chamber and an electromagnetic component in an internal arc extinguishing area, lubricating grease needs to be added on a mechanical transmission part to ensure that the adjustment is smoother, when the two shells are opened, the dust removal and the lubricating grease are swept, the mechanical transmission part does not shield a protection device, the mechanical transmission part can be loosened, clamping parts such as a spring are loosened and even separated and dropped, and the circuit breaker is difficult to restore by a user, therefore, the circuit breaker is damaged, we propose a miniature circuit breaker.

Disclosure of Invention

The invention aims to provide a miniature circuit breaker capable of preventing a mechanical transmission part from loosening caused by ash removal and oil addition in the maintenance process so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: miniature circuit breaker, including installation shell and upper cover, the upper cover is installed at the installation shell top, and leaves the cavity that is used for electromagnetic component and mechanical transmission part installation in the installation shell, the installation shell outside is fixed with and is used for with the fixed installed part of upper cover, and covers on and be equipped with the subassembly of uncapping of being convenient for installation shell internal part maintenance usefulness, realizes opening the local region of upper cover step by step through the subassembly of uncapping to accomplish deashing and go up the lubricating grease step, avoid at the maintenance in-process, joint parts such as spring are not hard up, break away from even and drop.

Preferably, the subassembly of uncapping includes flip lid and pull lid, it has flip mouth and pull mouth to cover to open on, and the pull lid pegs graft with in the pull mouth, flip lid one end is connected through pivot and flip mouth one end inner wall rotation, and flip lid outer end bottom is fixed with the joint piece, and installs joint spare in the joint piece, utilizes the subassembly of uncapping to realize opening the part of upper cover to be convenient for carry out the deashing to electromagnetic component in the installation shell and handle, and go up lubricating grease to mechanical transmission part.

Preferably, joint spare includes the dead lever, it has the joint groove to open in the joint piece, and the dead lever is fixed at the joint inslot, dead lever outside cover has the removal cover, and removes cover and joint inslot wall sliding connection, the removal cover outside is fixed with the limiting plate, and removes the cover outside cover and have the joint spring, the joint spring is located the joint inslot, and joint spring both ends respectively with limiting plate and the contact of joint inslot wall, realizes the joint to upset lid and upper cover through joint spare.

Preferably, the turnover cover is internally fixed with a sealing layer, and the upper cover is opened corresponding to the joint piece position and is provided with a joint interface, the joint interface is connected with the movable sleeve, and the inner intercommunication of the joint interface has a top hole, and the movable sleeve is pushed by stretching into the top hole by means of an tool, so that the movable sleeve is separated from the joint interface, and the turnover cover is convenient to open.

Preferably, the fixed plate is installed to the pull lid outer end, and pull lid both sides all are fixed with trapezoidal spacing, pull mouth both sides correspond to open have with trapezoidal spacing sliding connection's trapezoidal spacing groove, utilize the realization of mutually supporting of trapezoidal spacing and trapezoidal spacing groove to the spacing pull of pull lid.

Preferably, the installed part is equipped with a plurality ofly, and evenly respectively in the installing shell outside, joint spare includes the joint post, the joint post is fixed in the installing shell bottom, and slides in the joint post and peg graft and have the regulation post, the upper cover corresponds joint post rigidity has the cutting ferrule, and opens there are inserted hole and spacing groove in the cutting ferrule, the joint post outside is opened there are two U type mouths, and adjusts the post outside and be fixed with the spacing piece, stopper and U type mouth inner wall sliding connection, and stopper and spacing groove joint, joint capital portion is fixed with the roof, and joint post outside cover has the installation spring, the installation spring both ends contact with roof and stopper respectively, realizes through the installed part that the installation between installing shell and the upper cover is fixed.

Preferably, adjust the capital portion and be fixed with the regulation lid, and adjust the lid top and be fixed with two L templates that are used for the installed part to adjust, when rotating the regulation lid, through catching on the L template with the help of the instrument, the rotation of having pulled up again can realize the regulation to the regulation lid.

Preferably, the outer end of the movable sleeve is of an inclined plane structure, so that when the turnover cover is closed, the turnover cover can be closed only by external force.

Preferably, trapezoidal spacing strip and sealing layer all adopt the rubber material to make for flip lid and pull lid are after the closure, and sealing performance is better.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, through carrying out optimization and improvement on the upper cover of the miniature circuit breaker, the cover opening assembly is additionally arranged, so that the dust removal and the lubricating oil filling are more convenient when the circuit breaker is overhauled, the phenomenon that clamping parts such as springs are loosened and even separated from and fall off in the overhauling process is avoided, meanwhile, the mode that the existing installing shell and the upper cover are installed through screws is changed, and the screws are replaced by a plurality of installing parts, so that the disassembly and the installation of the circuit breaker are more convenient and faster, and the overhauling is more convenient.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

FIG. 2 is a schematic view of the lid assembly of the present invention in an open position;

FIG. 3 is a schematic view in partial cross-section of another angle of the lid assembly of the present invention in an open position;

FIG. 4 is a schematic view of the mounting member of the present invention;

FIG. 5 is a schematic cross-sectional view of the card connector of the present invention engaged with the card interface;

Fig. 6 is an enlarged view of a portion a in fig. 3.

In the figure: 1-mounting a housing; 2-covering the upper cover; 3-mounting parts; 4-a lid opening assembly; 5-turning over the cover; 6, drawing and pulling the cover; 7-turning over the mouth; 8-drawing the mouth; 9-a clamping block; 10-a clip; 11-a fixing bar; 12-a clamping groove; 13-moving the sleeve; 14-a limiting plate; 15-clamping a spring; 16-a sealing layer; 17-a card interface; 18-top hole; 19-fixing the plate; 20-trapezoidal limit strips; 21-trapezoidal spacing groove; 22-a clamping column; 23-a ferrule; 24-a conditioning column; 25-insertion opening; 26-a limit groove; 27-U-shaped port; 28-a limiting block; 29-a top plate; 30-installing a spring; 31-adjusting the cover; 32-L type board.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the miniature circuit breaker shown in the figures includes a mounting case 1 and an upper cover 2, the upper cover 2 is mounted on the top of the mounting case 1, and a cavity for mounting an electromagnetic component and a mechanical transmission component is left in the mounting case 1, and the cavity satisfies the mounting of an arc extinguishing device, the electromagnetic component and the mechanical component in the existing circuit breaker;

The installation shell 1 outside is fixed with and is used for the installed part 3 fixed with upper cover 2, and installed part 3 replaces the screw, realizes the fixed mounting between installation shell 1 and the upper cover 2, and is equipped with the subassembly 4 of uncapping of being convenient for installation shell 1 internals maintenance usefulness on the upper cover 2, and it is more convenient to make the deashing and add oil through subassembly 4 of uncapping.

The cover opening assembly 4 comprises a turnover cover 5 and a pull cover 6, the upper cover 2 can be opened in multiple areas step by step through the turnover cover 5 and the pull cover 6, a turnover port 7 and a pull port 8 are formed in the upper cover 2, the pull cover 6 is inserted into the pull port 8, one end of the turnover cover 5 is rotatably connected with the inner wall of one end of the turnover port 7 through a rotating shaft, a clamping block 9 is fixed at the bottom of the outer end of the turnover cover 5, and a clamping piece 10 is installed in the clamping block 9;

the clamping piece 10 comprises a fixed rod 11, a clamping groove 12 is formed in the clamping block 9, the fixed rod 11 is fixed in the clamping groove 12, a movable sleeve 13 is sleeved outside the fixed rod 11, the movable sleeve 13 is slidably connected with the inner wall of the clamping groove 12, a limiting plate 14 is fixed outside the movable sleeve 13, a clamping spring 15 is sleeved outside the movable sleeve 13, the clamping spring 15 is located in the clamping groove 12, two ends of the clamping spring 15 are respectively contacted with the limiting plate 14 and the inner wall of the clamping groove 12, elastic force is generated by elastic deformation of the clamping spring 15, the movable sleeve 13 moves outwards, clamping with the clamping port 17 is achieved, meanwhile, the outer end of the movable sleeve 13 is designed to be an inclined plane structure, and clamping is more convenient;

In addition, a sealing layer 16 is fixed in the turnover opening 7, a clamping opening 17 is formed in the position, corresponding to the clamping piece 10, of the upper cover 2, the clamping opening 17 is clamped with the movable sleeve 13, a top hole 18 is communicated with the inner end of the clamping opening 17, a tool is inserted into the top hole 18 to abut against the movable sleeve 13, and therefore the movable sleeve 13 is separated from the clamping opening 17, and the clamping piece 10 can be adjusted.

Fixed plate 19 is installed to the 6 outer ends of pull lid, and fixed plate 19 cooperation screw for

pull lid

6 and 2 bolted connection of upper cover, and 6 both sides of pull lid all are fixed with

trapezoidal spacing

20, and 8 both sides of pull mouth correspond to open have with trapezoidal spacing groove 21 of trapezoidal spacing 20 sliding connection, slide through the spacing of trapezoidal spacing 20 and trapezoidal spacing groove 21, make pull lid 6 remove more stably.

The mounting pieces 3 are arranged in a plurality of numbers and are uniformly and respectively arranged on the outer side of the mounting shell 1, each clamping piece 10 comprises a clamping column 22, each clamping column 22 is fixed at the bottom of the mounting shell 1, an adjusting column 24 is inserted in each clamping column 22 in a sliding mode, a clamping sleeve 23 is fixed on the upper cover 2 corresponding to the clamping column 22, an inserting hole 25 and a limiting groove 26 are formed in each clamping sleeve 23, two U-shaped openings 27 are formed in the outer side of each clamping column 22, a limiting block 28 is fixed on the outer side of each adjusting column 24, each limiting block 28 is connected with the inner wall of each U-shaped opening 27 in a sliding mode, each limiting block 28 is clamped with the corresponding limiting groove 26, a top plate 29 is fixed at the top of each clamping column 22, a mounting spring 30 is sleeved on the outer side of each clamping column 22, and two ends of each mounting spring 30 are respectively in contact with the top plate 29 and the limiting blocks 28;

Adjust the post 24 top and be fixed with the regulation lid 31, and adjust the lid 31 top and be fixed with two L templates 32 that are used for installed part 3 to adjust, two L templates 32 and external instrument cooperation action for it is more convenient to adjust the removal regulation of lid 31.

In the scheme, after the miniature circuit breaker is used for a period of time, dust exists in the circuit breaker and needs to be overhauled and maintained, at the moment, the miniature circuit breaker is inserted into the top hole 18 by means of tools such as a steel needle and the like, the movable sleeve 13 is pushed by the steel needle to be separated from the clamping port 17, then the turnover cover 5 is opened to achieve dust cleaning and sweeping treatment of an electromagnetic part, an arc extinguishing part and an incoming and outgoing line part in the circuit breaker, the turnover cover 5 is closed after treatment, meanwhile, a screw on the fixed plate 19 is unscrewed, the pulling cover 6 is pulled out outwards, opening of a mechanical transmission area is achieved, oil treatment is conducted on a mechanical part spring and a metal bearing area, and opening and closing of the mechanical part spring and the metal bearing area are smoother;

when the circuit breaker is opened to overhaul or change the part, this moment, catch on two L templates 32 through external instrument, and outwards take out, then rotate and adjust lid 31, make stopper 28 remove the top of U type mouth 27, and rotate 90, then through installation spring 30 elastic deformation, produce elasticity and promote stopper 28 and pass inserted hole 25, make cutting ferrule 23 no longer with stopper 28 joint, make things convenient for opening of upper cover 2, when the installation of the same reason, also only need aim at the inserted hole 25 with stopper 28 and insert, rotate 90 anticlockwise again, make stopper 28 and spacing groove 26 joint can.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Miniature circuit breaker, including installation shell (1) and upper cover (2), install at installation shell (1) top upper cover (2), and leave the cavity that is used for electromagnetic component and mechanical transmission part installation in installation shell (1), its characterized in that: the outer side of the mounting shell (1) is fixedly provided with a mounting piece (3) which is used for fixing the mounting piece with the upper cover (2), the upper cover (2) is provided with a cover opening assembly (4) which is convenient for overhauling the internal components of the mounting shell (1), the cover opening assembly (4) comprises a turnover cover (5) and a pull cover (6), the upper cover (2) is provided with a turnover opening (7) and a pull opening (8), the pull cover (6) is inserted into the pull opening (8), one end of the turnover cover (5) is rotatably connected with the inner wall of one end of the turnover opening (7) through a rotating shaft, the bottom of the outer end of the turnover cover (5) is fixedly provided with a clamping block (9), a clamping piece (10) is arranged in the clamping block (9), the clamping piece (10) comprises a fixed rod (11), a clamping groove (12) is formed in the clamping block (9), the fixed rod (11) is fixedly arranged in the clamping groove (12), and a movable sleeve (13) is sleeved on the outer side of the fixed rod (11), and the movable sleeve (13) is connected with the inner wall of the joint groove (12) in a sliding manner, a limiting plate (14) is fixed on the outer side of the movable sleeve (13), a joint spring (15) is sleeved on the outer side of the movable sleeve (13), the joint spring (15) is positioned in the joint groove (12), the two ends of the joint spring (15) are respectively contacted with the limiting plate (14) and the inner wall of the joint groove (12), a sealing layer (16) is fixed in the turnover opening (7), the upper cover (2) is opened with a joint opening (17) corresponding to the position of the joint piece (10), the joint opening (17) is connected with the movable sleeve (13) in a clamping manner, the inner end of the joint opening (17) is communicated with a top hole (18), a fixing plate (19) is installed at the outer end of the pull cover (6), trapezoidal limiting strips (20) are fixed on the two sides of the pull cover (6), trapezoidal limiting grooves (21) connected with the trapezoidal limiting strips (20) in a sliding manner are correspondingly opened on the two sides of the pull opening (8), the mounting pieces (3) are arranged in a plurality and are uniformly and respectively arranged on the outer side of the mounting shell (1), each clamping piece (10) comprises a clamping column (22), each clamping column (22) is fixed at the bottom of the mounting shell (1), an adjusting column (24) is inserted in each clamping column (22) in a sliding mode, a clamping sleeve (23) is fixed on the upper cover (2) corresponding to the clamping column (22), a clamping sleeve (23) is arranged in each clamping sleeve (23) and is provided with an insertion hole (25) and a limiting groove (26), two U-shaped openings (27) are formed in the outer sides of the clamping columns (22), a limiting block (28) is fixed on the outer side of each adjusting column (24), each limiting block (28) is connected with the inner wall of each U-shaped opening (27) in a sliding mode, each limiting block (28) is clamped with the corresponding limiting groove (26), a top plate (29) is fixed on the top of each clamping column (22), a spring (30) is arranged on the outer side of each clamping column (22), and two ends of each mounting spring (30) are respectively sleeved with the corresponding top plate (29) and each limiting block (28), when clearing up the dust in the circuit breaker, through inserting the apical pore with the help of the instrument, utilize the steel needle to promote the movable sleeve, make the movable sleeve break away from the joint mouth, open the flip lid again, close the flip lid after handling, unscrew the screw on the fixed plate simultaneously to outwards take out the pull lid, realize opening mechanical transmission region, again to mechanical part spring and metal bearing region oil the processing.

2. A miniature circuit breaker according to claim 1, wherein: adjust post (24) top and be fixed with regulation lid (31), and adjust lid (31) top and be fixed with two L templates (32) that are used for installed part (3) to adjust.

3. A miniature circuit breaker according to claim 2, wherein: the outer end of the movable sleeve (13) is of an inclined plane structure.

4. A miniature circuit breaker according to claim 3, wherein: the trapezoidal limiting strips (20) and the sealing layer (16) are made of rubber materials.