CN209525371U - Residual current transformer shell - Google Patents

Abstract

The utility model provides a kind of residual current transformer shell, the residual current transformer shell is made of upper shell and lower casing, upper shell and lower casing are in semi-circular, upper shell tips upside down on lower casing, upper shell is assembled by upper housing and upper case cover plate, and lower casing is assembled by lower case and lower case cover board；The positive both ends of upper housing and the left and right sides are provided with buckle, and upper housing cover board is also equipped with buckle, and the positive both ends of lower case and the left and right sides are provided with convex block；It is mounted on a U-shaped pushing block at the both ends of lower case, pushing up U-shaped pushing block makes to release clamping engagement between buckle and fixture block.Residual current transformer shell provided by the utility model is assembled using buckle-type, simplifies dismounting process, so that dismounting is more convenient.

Description

Residual current transformer shell

Technical field

The utility model relates to electric fields, and in particular to arrive a kind of residual current transformer shell.

Background technique

Mutual inductor in the prior art generally includes a shell and the magnet ring for being set to shell, and shell surrounds a confession The cavity that cable is worn, when cable wears cavity, mutual inductor detects cable.

Above-mentioned mutual inductor in the prior art has the disadvantage in that

1, shell is overall structure, so that cable can only be arranged in cavity by end.

2, two parts of the openable mutual inductor of shell, current this mutual inductor are generally fixed by screw together, and one Aspect installs more troublesome；Iron core (the forming electromagnet) leakage field for being wound with coil simultaneously is more serious, by bus cable magnetic field Influence very causes greatly residual current signal detection errors very big.

Utility model content

The utility model provides a kind of residual current transformer shell, and the residual current transformer shell is by upper shell It is formed with lower casing, upper shell and lower casing are in semi-circular, and upper shell tips upside down on lower casing；

Upper shell and lower casing be it is hollow, the inside of upper shell and lower casing is placed with small one and large one two semi-circulars Magnet ring, and in upper shell and lower casing respective two magnet rings in concentric circles be distributed；

Upper shell is assembled by upper housing and upper case cover plate, lower casing by lower case and lower case cover board assembling and The back side of upper housing and lower case is separately mounted at, upper housing cover board and lower case cover board；

The positive both ends of upper housing and the left and right sides are provided with buckle, and upper housing cover board is also equipped with buckle, under The positive both ends of shell and the left and right sides are provided with convex block, and the end of buckle turns down outward, and bayonet and the convex block of buckle are matched It closes；

Be mounted on a U-shaped pushing block at the both ends of lower casing, three side inner walls of U-shaped pushing block respectively with lower case just Face, side and the fitting of lower case cover board, and the inner wall of two parallel edges of U-shaped pushing block is provided with fixture block, lower case both ends Front and lower case cover board are provided with the sliding slot of vertical direction, and the inner wall fixture block on two sides of U-shaped pushing block is stuck in lower case And in the sliding slot of lower case cover board, pushing up U-shaped pushing block makes to release clamping engagement between buckle and convex block.

Further, lower casing bottom is integrally formed with a pedestal, and the left and right ends of pedestal are provided with through pedestal The fixed strip hole of the transverse direction of whole thickness.

Further, the top margin of U-shaped pushing block is provided with chamfering.

Further, on front side of U-shaped pushing block and rear side bottom end is provided with the step outwardly protruded, and bench floor is provided with Skid resistance strip.

Further, buckle is shaped in the outer wall of upper housing；

Convex block is shaped in the outer wall of lower case, and the section of convex block is right-angled trapezium and bevel edge is arranged upward.

Residual current transformer shell provided by the utility model is divided into two parts up and down, the two parts pass through buckle Mode is connected together, and greatlies simplify assemble flow；Convenient disassembly is considered simultaneously, we are provided at lower casing both ends and push away Piece, when need we by shell up and down two be partially separated and come, we push up push jack, mistake of the push jack in upward sliding The buckle of upper shell is pushed up outward in journey, so that being detached between the buckle of upper shell and the convex block of lower casing, and then is released up and down Snapping connection between shell, and then can very easily separate upper lower casing, it is screwed up and down compared to more traditional Shell, scheme provided by the utility model greatly simplify assemble flow, at the same transformer casing is integrally changed it is smaller, be suitble to It is a wide range of to promote the use of.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the main view of residual current transformer shell provided by the utility model；

Fig. 2-3 shows shell and lower casing is separated from the schematic diagram come；

Fig. 4 is the explosive view of residual current transformer shell provided by the utility model；

Fig. 5 is the perspective view of push jack；

Fig. 6 is the partial schematic diagram of lower case；

Fig. 7 a is that upper lower casing is transferred on schematic diagram together；

Fig. 7 b shows the schematic diagram for pushing up push jack.

Specific embodiment

In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model Solution.It is, however, obvious to a person skilled in the art that the utility model may not need it is one or more of these thin It saves and is carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art Technical characteristic is not described.

In order to thoroughly understand the utility model, detailed step and detailed structure will be proposed in following description, To illustrate the technical solution of the utility model.The preferred embodiment of the utility model is described in detail as follows, however in addition to these Detailed description is outer, and the utility model can also have other embodiments.

The utility model provides a kind of residual current transformer shell, as shown in Figure 1, outside the residual current transformer Shell 300 is made of upper shell 100 and lower casing 200, and upper shell 100 and lower casing 200 are in semi-circular, and upper shell 100 is buckled to On lower casing 200；

Upper shell 100 is assembled by upper housing 1 and upper housing cover board 1a, and lower casing 200 is by lower case 10 and lower case Cover board 10a assembles, and upper housing cover board 1a and lower case cover board 10a are separately mounted to the back side of upper housing 1 and lower case 10；

The positive both ends of upper housing 1 and the left and right sides are provided with buckle 2, and upper housing cover board 1a is also equipped with buckle 2, the positive both ends of lower case 10 and the left and right sides are provided with convex block 3, buckle 2 end and turn down outward, buckle 2 bayonet Cooperate with convex block 3；

A U-shaped pushing block 4 (as shown in Figure 5), three side inner walls point of U-shaped pushing block 4 are mounted at the both ends of lower case 10 It is not bonded with the front of lower case 10, side and lower case cover board 10a, and the inner wall setting of two parallel edges of U-shaped pushing block 4 There is fixture block 42, the front at 10 both ends of lower case and lower case cover board 10a are provided with the sliding slot 11 of vertical direction, 4 liang of U-shaped pushing block The fixture block 42 of a side inner wall is stuck in the sliding slot 11 of lower case 10 and lower case cover board 10a, and pushing up U-shaped pushing block 4 makes It releases and is engaged by clamping between buckle 2 and convex block 3, it is easier to illustrate as shown in the regional area B of Fig. 7 a-7b, it illustrates only U-shaped pushing block 4 pushes 2 turned-out schematic diagrames of buckle, and the convex block 3 of lower case 10 is not shown in figure.

200 bottom of lower casing is integrally formed with a pedestal 9, and the left and right ends of pedestal 9 are provided with through pedestal 9 entirely The fixed strip hole 8 of the transverse direction of thickness, band, which passes through the fixed strip hole 8 of the transverse direction, can be fixed on other for residual current transformer On device, quickly fixed effect is played.

The top margin of U-shaped pushing block 4 is provided with chamfering, so that U-shaped pushing block 4 is during moving up, it can be preferably by card It pushes up outward button bottom end.

4 front side of U-shaped pushing block and rear side bottom end are provided with the step 41 outwardly protruded, and 41 bottom surface of step be provided with it is anti-skidding Striped 43.By the way that step 41 is arranged, enable manpower more easily by U-shaped 4 upward sliding of pushing block, while also improving U The integral strength of type pushing block 4.The skid resistance strip 43 that 41 bottom surface of step is set is for improving manpower frictional force.

Buckle 2 is shaped in the outer wall of upper housing 1；Convex block 3 is shaped in the outer wall of lower case 10, and convex block 3 Section (perpendicular to the section on 10 surface of lower case) is right-angled trapezium and bevel edge is arranged upward, as shown in Figure 7.

Shell is divided into two parts up and down by residual current transformer provided by the utility model, the two parts pass through Snap is connected together, and greatlies simplify assemble flow；Convenient disassembly is considered simultaneously, we are arranged at lower casing both ends Have push jack, when need we by shell up and down two be partially separated and come, we push up push jack, and push jack is in upward sliding During the buckle of upper shell is pushed up outward so that be detached between the buckle of upper shell and the convex block of lower casing, and then release Snapping connection between upper lower casing, and then can very easily separate upper lower casing, it is screwed compared to more traditional Upper lower casing, scheme provided by the utility model greatly simplify assemble flow, at the same mutual inductor is integrally changed it is smaller, be suitble to It is a wide range of to promote the use of.

The preferred embodiment of the utility model is described above.It is to be appreciated that the utility model not office It is limited to above-mentioned particular implementation, devices and structures not described in detail herein should be understood as with the common side in this field Formula is practiced；Anyone skilled in the art all may be used in the case where not departing from technical solutions of the utility model ambit Many possible changes and modifications are made to technical solutions of the utility model using the methods and technical content of the disclosure above, or are repaired It is changed to the equivalent embodiment of equivalent variations, this has no effect on the substantive content of the utility model.Therefore, all practical without departing from this The content of new technique scheme, any simple modification made to the above embodiment of foundation the technical essence of the utility model, etc. With variation and modification, still fall within technical solutions of the utility model protection in the range of.

Claims (5)

1. a kind of residual current transformer shell, which is characterized in that the residual current transformer shell is by upper shell and lower outer Shell composition, upper shell and lower casing are in semi-circular, and upper shell tips upside down on lower casing；

Upper shell is assembled by upper housing and upper case cover plate, and lower casing is assembled by lower case and lower case cover board, on Housing cover and lower case cover board are separately mounted to the back side of upper housing and lower case；

The positive both ends of upper housing and the left and right sides are provided with buckle, and upper housing cover board is provided with buckle, lower case front Both ends and the left and right sides be provided with convex block, lower case cover board is provided with convex block, and the end of buckle turns down outward, buckle Bayonet and convex block cooperate；

Be mounted on a U-shaped pushing block at the both ends of lower casing, three side inner walls of U-shaped pushing block respectively with the front of lower case, side Face and the fitting of lower case cover board, and the inner wall of two parallel edges of U-shaped pushing block is provided with fixture block, the front at lower case both ends and Lower case cover board is provided with the sliding slot of vertical direction, and the inner wall fixture block on two sides of U-shaped pushing block is stuck in lower case and lower casing In the sliding slot of body cover board.

2. residual current transformer shell as described in claim 1, which is characterized in that lower casing bottom is integrally formed with a bottom Seat, and the left and right ends of pedestal are provided with through the fixed strip hole of transverse direction of pedestal whole thickness.

3. residual current transformer shell as described in claim 1, which is characterized in that the top margin of U-shaped pushing block is provided with chamfering.

4. residual current transformer shell as described in claim 1, which is characterized in that on front side of U-shaped pushing block and rear side bottom end is equal It is provided with the step outwardly protruded, and bench floor is provided with skid resistance strip.

5. residual current transformer shell as described in claim 1, which is characterized in that buckle is shaped in the outer of upper housing Wall；

Convex block is shaped in the outer wall of lower case, and the section of convex block is right-angled trapezium and bevel edge is arranged upward.