CN210575769U

CN210575769U - Circuit breaker shield

Info

Publication number: CN210575769U
Application number: CN201922021851.5U
Authority: CN
Inventors: 李秀左
Original assignee: Zhejiang Ou Kai Electric Co Ltd
Current assignee: Zhejiang Ou Kai Electric Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-05-19
Anticipated expiration: 2029-11-20

Abstract

The utility model relates to a technical field of circuit breaker discloses a circuit breaker guard shield, and its technical scheme main points include fixed mounting panel and the fixed plate that links to each other, be equipped with the through wires hole that supplies outside wire to pass on the fixed plate, be fixed with two at least grafting pieces on the mounting panel, the cross-sectional area of grafting piece reduces gradually and the middle part is equipped with the perforating hole to one side of keeping away from the mounting panel. The utility model discloses have the effect that makes things convenient for operating personnel to align, the installation effectiveness is high with the mounting hole on plug block and the circuit breaker casing.

Description

Circuit breaker shield

Technical Field

The utility model relates to a technical field of circuit breaker, more specifically say that it relates to a circuit breaker guard shield.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening a current under a normal circuit condition, and closing, carrying, and opening a current under an abnormal circuit condition within a prescribed time.

Currently, patent publication No. CN101978459A discloses a circuit breaker, which includes a housing, a screw holder with a screw is assembled in the housing, and a through hole for the screw to extend into is provided on the housing. In order to prevent impurities such as dust and moisture from entering the casing from the through hole to interfere with the operation of the circuit breaker, the protective covers are usually additionally arranged on two sides of the casing.

Among the prior art, as shown in fig. 1, a circuit breaker guard shield includes fixed mounting panel 1 and fixed plate 2 that link to each other, is equipped with the through wires hole 7 that supplies the external conductor to pass on the fixed plate 2, is fixed with a plurality of grafting pieces 4 that the thickness is impartial everywhere on the mounting panel 1, grafting piece 4 along vertical direction extend and with fixed plate 2 fixed connection, be provided with on the casing of circuit breaker and supply grafting piece 4 male mounting hole. When the circuit breaker shield is installed, the plurality of insertion blocks 4 are inserted into the corresponding installation holes of the circuit breaker housing.

The thicknesses of the inserting blocks in the breaker shield are equal, and when the inserting blocks are installed on a shell of a breaker, the inserting blocks are manually aligned with mounting holes in the shell of the breaker respectively. To ensure the stability of the circuit breaker shield, the cross-sectional area of the plug-in block is usually set to be slightly larger than that of the mounting hole of the circuit breaker housing, so that the plug-in block is slightly deformed to be clamped in the mounting hole. However, due to the fact that the size difference between the insertion block and the installation hole is small, the insertion block is not aligned with the installation hole in the breaker shell conveniently when an operator installs the breaker, the position of the breaker shield needs to be adjusted repeatedly by the operator during installation so that the insertion block is aligned with the installation hole, and installation efficiency is low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a circuit breaker guard shield has and makes things convenient for the installation hole alignment on operating personnel will plug block and the circuit breaker casing, the efficient effect of installation.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a circuit breaker guard shield, includes fixed mounting panel and the fixed plate that links to each other, be equipped with the through wires hole that supplies outside wire to pass on the fixed plate, be fixed with two at least plug blocks on the mounting panel, the cross-sectional area of plug block reduces gradually and the middle part is equipped with the perforating hole to one side of keeping away from the mounting panel.

Through adopting above-mentioned technical scheme, during the installation guard shield, stretch into respectively on the circuit breaker casing with the mounting hole of its adaptation with a plurality of grafting pieces, because the cross-sectional area of grafting piece reduces gradually to the one side of keeping away from the mounting panel, therefore the size that the mounting panel tip was kept away from to the grafting piece can more be less than mounting hole open-ended size, compare in establishing the thickness with each department of grafting piece for impartially, the grafting piece of being more convenient for aligns with the mounting hole, the time of having shortened operating personnel alignment grafting piece and mounting hole, the installation effectiveness is high. The outer wall receives the extrusion of mounting hole lateral wall gradually and produces deformation when inserting the mounting hole to the chucking is in order to realize the fixed of guard shield in the mounting hole, and the perforating hole has not only increased the deformation degree of grafting piece, plays the effect of protection grafting piece, can also save the production material of grafting piece, resources are saved.

The utility model discloses further set up to: and a plurality of extension holes communicated with the through holes are formed in the side wall of the insertion block.

Through adopting above-mentioned technical scheme, the deformation scope of grafting piece has further been increased in the extension hole, avoids the grafting piece damaged under the extrusion of mounting hole lateral wall, has prolonged the life of grafting piece.

The utility model discloses further set up to: the plug-in blocks are round table-shaped, the number of the extension holes is four, and the extension holes are circumferentially and uniformly distributed along the central axis of the plug-in blocks.

By adopting the technical scheme, the inserting block is divided into four parts by the four extending holes, and the stress action born by the four parts is relatively equal, so that the inserting block is prevented from being damaged by overlarge local bearing stress.

The utility model discloses further set up to: and a fillet is arranged at the joint of the fixing plate and the mounting plate.

By adopting the technical scheme, the fillet makes the junction of fixed plate and mounting panel more level and smooth, avoids the staff to be stabbed by the sharp arris of fixed plate and mounting panel junction when gripping the guard shield, and the potential safety hazard is little.

The utility model discloses further set up to: the inner wall of the upper side of the threading hole is a concave cambered surface.

Through adopting above-mentioned technical scheme, the shape of external conductor is the cylindric of rectangular shape usually, and the upside inner wall of through wires hole sets up concave cambered surface and has increased external conductor and when contacting both connection area, has improved external conductor's stability.

The utility model discloses further set up to: a partition plate fixedly connected with the fixing plate is arranged between any two adjacent threading holes.

Through adopting above-mentioned technical scheme, the outside wire of wearing to establish in different through wires holes can further be separated to the baffle, avoids outside wire intertwine or produces electromagnetic interference, and the security performance is high.

The utility model discloses further set up to: the partition plate, the fixing plate and the mounting plate are integrally formed.

By adopting the technical scheme, the connection strength of the partition plate, the fixing plate and the mounting plate is high, the processing technology of the shield is simple, and the processing is convenient.

The utility model discloses further set up to: the fixed plate is provided with a plurality of groups of radiating pieces, each partition plate is positioned between two adjacent groups of radiating pieces, and each group of radiating pieces comprises a plurality of radiating holes which are equidistantly distributed along the horizontal direction.

By adopting the technical scheme, the heat dissipation holes are beneficial to heat dissipation of elements in the shell of the circuit breaker, and normal use of the circuit breaker is guaranteed; the radiating holes are distributed at equal intervals along the horizontal direction, and the radiating effect is good.

The utility model discloses further set up to: the mounting panel is provided with the terminal surface integrated into one piece of grafting piece and has two fixture blocks, and two fixture blocks are located the both sides of grafting piece respectively and tip integrated into one piece has the trip.

Through adopting above-mentioned technical scheme, when the grafting piece inserted the draw-in groove, the trip produced deformation and card go into the circuit breaker casing on rather than the draw-in groove that corresponds, increased the joint strength of guard shield and circuit breaker casing, improved the stability of guard shield.

The utility model discloses further set up to: the side, far away from the fixture block, of the mounting plate is integrally formed with a moving block, a limiting block is integrally formed on two opposite side walls of the moving block, and the limiting block is located at one end, far away from the mounting plate, of the moving block.

Through adopting above-mentioned technical scheme, when demolising the guard shield, operating personnel can put into the stopper with the finger and remove the clearance that the piece formed, lift the guard shield again so that plug block and mounting hole separation, trip and draw-in groove when separating. The limiting block can limit the relative sliding of the fingers of the operator and the moving block, so that the finger slipping of the operator due to the over-tight clamping of the inserting block and the clamping hook is avoided, and the protective cover is favorably detached by the operator.

To sum up, the utility model discloses following beneficial effect has:

1. the cross-sectional area of the plugging block is gradually reduced towards one side far away from the mounting plate, so that the size of the end part of the plugging block far away from the mounting plate is smaller than the size of an opening of a mounting hole in the shell of the circuit breaker, an operator can align the plugging block with the mounting hole conveniently, and the mounting efficiency of the protective cover is high;

2. the through hole and the extension hole expand the deformation range of the plug-in block, and play a role in protecting the plug-in block; the partition plate can be used for separating external wires penetrating through different threading holes, so that the external wires are prevented from being mutually wound or generating electromagnetic interference;

3. when the inserting block extends into the mounting hole on the breaker shell, the clamping hook deforms and is clamped into the clamping groove on the breaker shell, so that the connection strength of the protective cover and the breaker shell is further improved; the arrangement of the moving block and the limiting block has the effect of facilitating the operator to detach the protective cover.

Drawings

Fig. 1 is a schematic structural view of a circuit breaker shield in the background art;

FIG. 2 is a schematic structural view of embodiment 1;

FIG. 3 is a schematic structural view from another perspective in embodiment 1;

FIG. 4 is a schematic structural view of embodiment 2.

Reference numerals: 1. mounting a plate; 2. a fixing plate; 3. round corners; 4. an insertion block; 5. a through hole; 6. an extension hole; 7. threading holes; 8. a concave arc surface; 9. a partition plate; 10. heat dissipation holes; 11. a clamping block; 12. a hook is clamped; 13. a moving block; 14. and a limiting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

The embodiment discloses a circuit breaker shield, as shown in fig. 2 and 3, the circuit breaker shield comprises a mounting plate 1 and a fixing plate 2 which are integrally formed, the fixing plate 2 is located at the end of the lower side surface of the mounting plate 1, a round corner 3 is arranged at the joint of the fixing plate 2 and the mounting plate 1, and the round corner 3 can protect hands from being cut when holding the shield.

As shown in fig. 2 and 3, two insertion blocks 4 are integrally formed on the lower end surface of the mounting plate 1, the insertion blocks 4 are circular truncated cone-shaped, a through hole 5 extending in the length direction is formed in the middle of the insertion blocks 4, and the cross-sectional area of each insertion block 4 is gradually reduced towards one side far away from the mounting plate 1. When the guard shield is installed, the plug-in block 4 deforms and is clamped into the installation hole in the shell of the circuit breaker, and the cross section area of the end part of the installation plate, far away from the end part of the installation plate, of the plug-in block 4 is small, so that the plug-in block 4 is easier to insert into the installation hole due to the fact that the plug-in block is equal in thickness, and installation efficiency is high.

As shown in fig. 2 and 3, four extension holes 6 communicated with the through hole 5 are formed in the circumferential side wall of the insertion block 4, and the four extension holes 6 are circumferentially and uniformly distributed on the central axis of the insertion block 4. The deformation range of the plug-in block 4 is enlarged by the extension hole 6, so that the plug-in block 4 is not easy to damage when being extruded by the shell of the circuit breaker, and the service life of the plug-in block 4 is prolonged.

As shown in fig. 2 and 3, three threading holes 7 are formed in the side wall of the fixing plate 2, the inner wall of the upper side of each threading hole 7 is a concave arc surface 8, the lower side of each threading hole is communicated with the lower end face of the fixing plate 2, and the distance between every two adjacent threading holes 7 is equal. The external conductor can be penetrated by through wires hole 7 and in order to stretch into the circuit breaker casing, and concave cambered surface 8 has increased the area of contact of external conductor and fixed plate 2, has improved the stability of external conductor.

As shown in fig. 2 and 3, a partition plate 9 is fixed between any two adjacent threading holes 7, the partition plate 9 and the fixing plate 2 are integrally formed, and the partition plate 9 plays a role of separating external wires passing through different threading holes 7, so that the external wires are not easy to intertwine with each other or generate electromagnetic interference.

As shown in fig. 2 and 3, three groups of heat dissipation members are arranged on the fixing plate 2, each group of heat dissipation members includes three heat dissipation holes 10 equidistantly distributed along the horizontal direction, the heat dissipation holes 10 extend along the vertical direction, and the two partition plates 9 are respectively located between the two adjacent groups of heat dissipation members. The heat generated by the working of the elements in the shell of the circuit breaker can be discharged through the heat dissipation holes 10, so that the normal use of the circuit breaker is guaranteed.

The working principle of the embodiment is as follows: when the protective cover is installed, because the cross-sectional area of the plug block 4 is gradually reduced towards one side far away from the installation plate 1, the end size of the plug block 4 far away from the installation plate 1 is smaller than the size of an opening of an installation hole in a circuit breaker shell, and the plug block 4 is more convenient for an operator to align with the installation hole. When the plug-in block 4 stretches into the mounting hole, the outer wall of the plug-in block is gradually extruded by the inner wall of the mounting hole to deform, and then the plug-in block is tightly clamped in the mounting hole to fix the protective cover.

Example 2

This embodiment discloses a circuit breaker shield, as shown in fig. 4, and the difference between this embodiment and embodiment 1 is: the mounting panel 1 is provided with the terminal surface integrated into one piece of grafting piece 4 and has two fixture blocks 11, and two fixture blocks 11 are located two one sides that the grafting piece 4 carried on the back mutually respectively, and the tip integrated into one piece that mounting panel 1 was kept away from to fixture block 11 has trip 12. The trip 12 is used for cooperating with the draw-in groove on the circuit breaker casing, and when the mounting hole on the circuit breaker casing is inserted to grafting piece 4, the trip 12 can produce deformation and block in the draw-in groove to further restrict guard shield and circuit breaker casing separation, improved the stability of guard shield.

As shown in fig. 4, a moving block 13 is integrally formed on the end surface of the mounting plate 1 away from the mounting plate where the fixture block 11 is arranged, the moving block 13 is located in the middle of the mounting plate 1, a limiting block 14 is integrally formed on two opposite side walls of the moving block 13, and the limiting block 14 is located at one end of the moving block 13 away from the mounting plate 1.

The working principle of the embodiment is as follows: when the protective cover is installed, the inserting block 4 is inserted into the installation hole of the circuit breaker shell and matched with the inserting block, meanwhile, the clamping hook 12 deforms and is clamped into the clamping groove of the circuit breaker shell and matched with the circuit breaker shell, the clamping block 11 and the clamping hook 12 are arranged, the connection strength of the protective cover and the circuit breaker shell is improved, and the stability of the protective cover is improved. When the protective cover is detached, an operator can respectively stretch two fingers into a gap formed by the two limit blocks 14 and the moving block 13, the limit blocks 14 can limit the fingers of the operator to move relative to the protective cover when the protective cover is pulled, and the protective cover is more convenient to detach for the operator.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a circuit breaker guard shield, includes fixed mounting panel (1) and fixed plate (2) that link to each other, be equipped with through wires hole (7) that supply external conductor to pass on fixed plate (2), be fixed with two at least plug-in blocks (4) on mounting panel (1), its characterized in that: the cross-sectional area of the plug-in block (4) is gradually reduced towards one side far away from the mounting plate (1) and the middle part of the plug-in block is provided with a through hole (5).

2. A circuit breaker shroud as claimed in claim 1, wherein: the side wall of the insertion block (4) is provided with a plurality of extension holes (6) communicated with the through holes (5).

3. A circuit breaker shroud as claimed in claim 2, wherein: the plug-in block (4) is round platform form, the quantity of extension hole (6) is four and is the circumference equipartition with the axis of plug-in block (4).

4. A circuit breaker shroud as claimed in claim 1, wherein: and a fillet (3) is arranged at the joint of the fixing plate (2) and the mounting plate (1).

5. A circuit breaker shroud as claimed in claim 1, wherein: the inner wall of the upper side of the threading hole (7) is a concave cambered surface (8).

6. The circuit breaker shroud of claim 5, wherein: a partition plate (9) fixedly connected with the fixing plate (2) is arranged between any two adjacent threading holes (7).

7. The circuit breaker shroud of claim 6, wherein: the partition plate (9), the fixing plate (2) and the mounting plate (1) are integrally formed.

8. The circuit breaker shroud of claim 6, wherein: the heat dissipation structure is characterized in that a plurality of groups of heat dissipation pieces are arranged on the fixing plate (2), each partition plate (9) is located between two adjacent groups of heat dissipation pieces, and each group of heat dissipation pieces comprises a plurality of heat dissipation holes (10) which are distributed at equal intervals in the horizontal direction.

9. A circuit breaker shroud as claimed in claim 1, wherein: the mounting panel (1) is provided with the terminal surface integrated into one piece of grafting piece (4) and has two fixture blocks (11), and two fixture blocks (11) are located the both sides of grafting piece (4) respectively and tip integrated into one piece have trip (12).

10. A circuit breaker shroud as claimed in claim 9, wherein: a moving block (13) is integrally formed on one side, away from the clamping block (11), of the mounting plate (1), a limiting block (14) is integrally formed on two opposite side walls of the moving block (13), and the limiting block (14) is located at one end, away from the mounting plate (1), of the moving block (13).