CN109655649B - Fool-proof assembled residual current transformer - Google Patents
Fool-proof assembled residual current transformer Download PDFInfo
- Publication number
- CN109655649B CN109655649B CN201910063655.6A CN201910063655A CN109655649B CN 109655649 B CN109655649 B CN 109655649B CN 201910063655 A CN201910063655 A CN 201910063655A CN 109655649 B CN109655649 B CN 109655649B
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- shell
- lower shell
- upper shell
- cover plate
- current transformer
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention provides a foolproof assembled residual current transformer, which comprises an annular shell, wherein the shell consists of an upper shell and a lower shell, the upper shell and the lower shell are both semi-annular, the upper shell is reversely buckled on the lower shell, the upper shell is assembled by an upper shell and an upper shell cover plate, and the lower shell is assembled by a lower shell and a lower shell cover plate; the two ends of the front face of the upper shell and the left and right sides of the front face of the lower shell are respectively provided with a buckle, the upper shell cover plate is also provided with a buckle, and the two ends of the front face of the lower shell and the left and right sides of the front face of the lower shell are respectively provided with a lug; a U-shaped push block is arranged at two ends of the lower shell, and the U-shaped push block is pushed upwards to release the clamping fit between the clamping buckle and the clamping block. The residual current transformer provided by the invention simplifies the disassembly and assembly process, so that the disassembly and assembly are more convenient and quicker, and meanwhile, the assembly is more standard by adopting the fool-proof design.
Description
Technical Field
The invention relates to the field of electricity, in particular to a foolproof assembled residual current transformer.
Background
The transformer in the prior art generally comprises a shell and a magnetic ring arranged on the shell, wherein the shell encloses a containing cavity for a cable to pass through, and when the cable passes through the containing cavity, the transformer detects the cable.
The above-mentioned transformer in the prior art has the following disadvantages:
1. the casing is overall structure for the cable only can pass through the tip and locate the appearance chamber.
2. The transformer with the openable shell is characterized in that two parts of the transformer are generally fastened together through screws at present, so that the transformer is troublesome to install; meanwhile, the magnetic leakage of the iron core (forming an electromagnet) wound with the coil is serious, and the residual current signal detection error is very large due to the fact that the magnetic field of the bus cable is greatly influenced.
Disclosure of Invention
The invention provides a foolproof assembled residual current transformer, which comprises an annular shell, wherein the shell consists of an upper shell and a lower shell, the upper shell and the lower shell are both semi-annular, and the upper shell is reversely buckled on the lower shell;
the upper shell and the lower shell are hollow, two semi-annular magnetic rings with a larger size and a smaller size are arranged in the upper shell and the lower shell, and the two magnetic rings in the upper shell and the lower shell are distributed in concentric circles;
the upper shell is formed by assembling an upper shell and an upper shell cover plate, the lower shell is formed by assembling a lower shell and a lower shell cover plate, and the upper shell cover plate and the lower shell cover plate are respectively arranged on the back surfaces of the upper shell and the lower shell;
the two ends of the front face of the upper shell and the left and right sides of the front face of the upper shell are respectively provided with a buckle, the cover plate of the upper shell is also provided with a buckle, the two ends of the front face of the lower shell and the left and right sides of the lower shell are respectively provided with a convex block, the tail ends of the buckles are turned outwards, the bayonets of the buckles are matched with the convex blocks, and the buckles on the left and right sides of the upper shell are asymmetric relative to the central section line of the left and right directions of the upper shell;
a U-shaped push block is arranged at two ends of the lower shell, three side inner walls of the U-shaped push block are respectively attached to the front face, the side face and the lower shell cover plate of the lower shell, clamping blocks are arranged on the inner walls of two parallel sides of the U-shaped push block, sliding grooves in the vertical direction are formed in the front face of two ends of the lower shell and the lower shell cover plate, and the clamping blocks on the inner walls of two sides of the U-shaped push block are respectively clamped in the sliding grooves of the lower shell and the lower shell cover plate.
Further, a base is integrally formed at the bottom of the lower shell, and transverse fixing strip-shaped holes penetrating through the whole thickness of the base are formed at the left end and the right end of the base.
Further, the top edge of the U-shaped pushing block is provided with a chamfer.
Further, the front side and the rear side bottom of the U-shaped push block are respectively provided with an outwardly protruding step, and the bottom surface of the step is provided with anti-skid stripes.
Further, the buckle is integrally formed on the outer wall of the upper shell;
the lug integrated into one piece is in the outer wall of lower casing, and the cross-section of lug is right trapezoid and hypotenuse setting up.
According to the residual current transformer provided by the invention, the shell is divided into the upper part and the lower part, and the two parts are clamped together in a clamping manner, so that the assembly process is greatly simplified; meanwhile, considering the convenience of disassembly, the push plates are arranged at the two ends of the lower shell, when the upper and lower parts of the shell are required to be separated, the push plates are pushed upwards, the push plates push the buckles of the upper shell outwards in the upward sliding process, so that the buckles of the upper shell are separated from the bumps of the lower shell, the buckle connection between the upper shell and the lower shell is further released, the upper shell and the lower shell can be separated conveniently, and compared with the traditional scheme that the upper shell and the lower shell are fixed by screws, the assembly process is greatly simplified, and meanwhile, the whole transformer is slightly changed, so that the transformer is suitable for being popularized and used in a large range; meanwhile, the buckle adopts a foolproof design, so that the situation of incorrect installation is avoided, and the performance of the whole device is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a residual current transformer provided by the present invention;
FIGS. 2-3 show schematic views of the upper housing separated from the lower housing;
fig. 4 is an exploded view of the residual current transformer housing provided by the present invention;
FIGS. 5a and 5b show snap position views of the left and right sides of the upper housing, respectively;
FIG. 6 is a perspective view of a pusher;
FIG. 7 is a partial schematic view of the lower housing;
FIG. 8 shows a schematic view of a magnetic ring within an upper housing;
FIG. 9a is a schematic diagram of the upper and lower housings being mated together;
fig. 9b shows a schematic drawing of pushing the push plate upwards.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be presented in the following description in order to explain the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The invention provides a foolproof assembled residual current transformer, which comprises an annular shell 300, wherein the shell consists of an upper shell 100 and a lower shell 200, the upper shell 100 and the lower shell 200 are semi-annular, and the upper shell 100 is reversely buckled on the lower shell 200;
the upper shell 100 and the lower shell 200 are hollow, a large semi-annular magnetic ring 12 and a small semi-annular magnetic ring 13 are arranged in the upper shell 100 and the lower shell 200, and the two magnetic rings in the upper shell 100 and the lower shell 200 are distributed in concentric circles (as shown in fig. 8);
the upper case 100 is assembled by an upper case 1 and an upper case cover 1a, and the lower case 200 is assembled by a lower case 10 and a lower case cover 10a, the upper case cover 1a and the lower case cover 10a being respectively installed at the back surfaces of the upper case 1 and the lower case 10;
the two ends of the front surface of the upper shell 1 and the left and right sides are provided with buckles 2, the upper shell cover plate 1a is also provided with buckles 2, the two ends of the front surface of the lower shell 10 and the left and right sides are provided with lugs 3, the tail ends of the buckles 2 are turned outwards, the bayonet of the buckles 2 are matched with the lugs 3, and the buckles on the left and right sides of the upper shell are asymmetric about the central section line of the left and right directions of the upper shell;
a U-shaped push block 4 is installed at two ends of the lower housing 10 (as shown in fig. 6), three side inner walls of the U-shaped push block 4 are respectively attached to the front face, the side face and the lower housing cover plate 10a of the lower housing 10, clamping blocks 42 are arranged on inner walls of two parallel sides of the U-shaped push block 4, sliding grooves 11 in the vertical direction are respectively formed in the front face of two ends of the lower housing 10 and the lower housing cover plate 10a of the lower housing, the clamping blocks 42 on the inner walls of two sides of the U-shaped push block 4 are respectively clamped in the sliding grooves 11 of the lower housing 10 and the lower housing cover plate 10a, and the U-shaped push block 4 is pushed upwards to release clamping fit between the clamping blocks 2 and the protruding blocks 3, as shown in a partial area B of fig. 9a-9B, and for simplicity of illustration, only a schematic view that the clamping blocks 2 are pushed outwards by the U-shaped push block 4 is shown, and the protruding blocks 3 of the lower housing 10 are not shown in the drawings.
As shown in fig. 5a and 5b, which respectively show schematic views of the buckles on the left and right sides of the upper shell, as shown in the figure, A-A is a section line of the left and right directions of the upper shell, the buckle on the left side of the upper shell is arranged at the left center of the upper shell, and the buckle on the right side of the upper shell is not arranged at the right center of the upper shell but is slightly close to the back of the upper shell, namely, the buckles on the left and right sides of the upper shell are asymmetric about the center section line of the left and right directions of the upper shell. The invention adopts a foolproof design, when a user installs the upper shell and the lower shell, if the positive and negative directions are not corresponding, the buckles on the two sides of the upper shell cannot be clamped on the convex blocks on the two sides of the lower shell, so that the clamping fit cannot be completed, and the clamping fit can be completed only by reversely buckling the upper shell on the lower shell according to the standard direction.
The bottom of the lower shell 200 is integrally formed with a base 9, and the left end and the right end of the base 9 are respectively provided with a transverse fixing strip hole 8 penetrating through the whole thickness of the base 9, and a ribbon passes through the transverse fixing strip holes 8 to fix the residual current transformer on other devices, so that the quick fixing function is realized.
The middle part of the front side of the base 9 is provided with a protection box 7, two wiring terminals 5 are arranged in the protection box 7, and the two wiring terminals 5 are mutually separated by a partition board in the protection box 7; the protective case 7 is provided with a flip cover 6.
The top edge of the U-shaped push block 4 is provided with a chamfer, so that the U-shaped push block 4 can better push the bottom end of the buckle outwards in the upward moving process.
The front side and the rear side bottom of the U-shaped push block 4 are respectively provided with an outwardly protruding step 41, and the bottom surface of the step 41 is provided with an anti-skid stripe 43. Through setting up step 41 for the staff can be lighter upwards slide U type ejector pad 4, have also improved U type ejector pad 4's bulk strength simultaneously. The anti-slip stripes 43 provided on the bottom surface of the step 41 are used to increase friction.
The buckle 2 is integrally formed on the outer wall of the upper shell 1; the bump 3 is integrally formed on the outer wall of the lower housing 10, and the cross section of the bump 3 (the cross section perpendicular to the surface of the lower housing 10) is a right trapezoid with the inclined side facing upwards, as shown in fig. 7.
According to the foolproof assembled residual current transformer provided by the invention, the shell is divided into the upper part and the lower part, and the two parts are clamped together in a clamping manner, so that the assembly process is greatly simplified; meanwhile, considering the convenience of disassembly, the push plates are arranged at the two ends of the lower shell, when the upper part and the lower part of the shell are required to be separated, the push plates are pushed upwards, the push plates push the buckles of the upper shell outwards in the upward sliding process, so that the buckles of the upper shell are separated from the bumps of the lower shell, the buckle connection between the upper shell and the lower shell is further released, the upper shell and the lower shell can be separated conveniently, and compared with the traditional scheme that the upper shell and the lower shell are fixed by screws, the assembly process is greatly simplified, and meanwhile, the whole transformer is slightly changed, so that the transformer is suitable for being popularized and used in a large range.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, using the methods and technical contents disclosed above, without affecting the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (5)
1. The fool-proof assembled residual current transformer is characterized by comprising an annular shell, wherein the shell consists of an upper shell and a lower shell, the upper shell and the lower shell are semi-annular, and the upper shell is reversely buckled on the lower shell;
the upper shell and the lower shell are hollow, two semi-annular magnetic rings with a larger size and a smaller size are arranged in the upper shell and the lower shell, and the two magnetic rings in the upper shell and the lower shell are distributed in concentric circles;
the upper shell is formed by assembling an upper shell and an upper shell cover plate, the lower shell is formed by assembling a lower shell and a lower shell cover plate, and the upper shell cover plate and the lower shell cover plate are respectively arranged on the back surfaces of the upper shell and the lower shell;
the two ends of the front surface of the upper shell and the left and right sides of the front surface of the upper shell are respectively provided with a buckle, the two ends of the front surface of the lower shell and the left and right sides of the upper shell are respectively provided with a lug, the lower shell cover is provided with a lug, the tail ends of the buckles are turned outwards, the bayonets of the buckles are matched with the lugs, and the buckles on the left and right sides of the upper shell are asymmetric about the central section line of the left and right directions of the upper shell;
a U-shaped push block is arranged at two ends of the lower shell, three side inner walls of the U-shaped push block are respectively attached to the front face, the side face and the lower shell cover plate of the lower shell, clamping blocks are arranged on the inner walls of two parallel sides of the U-shaped push block, sliding grooves in the vertical direction are formed in the front face of two ends of the lower shell and the lower shell cover plate, and the clamping blocks on the inner walls of two sides of the U-shaped push block are respectively clamped in the sliding grooves of the lower shell and the lower shell cover plate.
2. The fool-proof assembled residual current transformer according to claim 1, wherein a base is integrally formed at the bottom of the lower case, and both left and right ends of the base are provided with transverse fixing strip-shaped holes penetrating through the entire thickness of the base.
3. The fool-proof assembled residual current transformer of claim 1, wherein the top edge of the U-shaped push block is provided with a chamfer.
4. The foolproof assembled residual current transformer according to claim 1, wherein the front side and the rear side bottom ends of the U-shaped push block are provided with steps protruding outwards, and the bottom surfaces of the steps are provided with anti-slip stripes.
5. The fool-proof assembled residual current transformer of claim 1, wherein the buckle is integrally formed on the outer wall of the upper case;
the lug integrated into one piece is in the outer wall of lower casing, and the cross-section of lug is right trapezoid and hypotenuse setting up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063655.6A CN109655649B (en) | 2019-01-23 | 2019-01-23 | Fool-proof assembled residual current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063655.6A CN109655649B (en) | 2019-01-23 | 2019-01-23 | Fool-proof assembled residual current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109655649A CN109655649A (en) | 2019-04-19 |
| CN109655649B true CN109655649B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063655.6A Active CN109655649B (en) | 2019-01-23 | 2019-01-23 | Fool-proof assembled residual current transformer |
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| Country | Link |
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| CN (1) | CN109655649B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105247750A (en) * | 2013-05-24 | 2016-01-13 | 3M创新有限公司 | Closure |
| CN207215884U (en) * | 2017-09-28 | 2018-04-10 | 北京北元安达电子有限公司 | Open type residual current transformer |
| CN207399442U (en) * | 2017-11-21 | 2018-05-22 | 重庆赛帕斯汽车零部件有限公司 | A kind of automobile using loudspeaker mask assembly |
| CN207765248U (en) * | 2017-12-14 | 2018-08-24 | 福建创四方电子有限公司 | A kind of open-close type current transformer |
| CN209525381U (en) * | 2019-01-23 | 2019-10-22 | 柏宜照明（上海）股份有限公司 | The residual current transformer of fool proof assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6205127B2 (en) * | 2012-12-19 | 2017-09-27 | 富士通コンポーネント株式会社 | Current sensor |
-
2019
- 2019-01-23 CN CN201910063655.6A patent/CN109655649B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105247750A (en) * | 2013-05-24 | 2016-01-13 | 3M创新有限公司 | Closure |
| CN207215884U (en) * | 2017-09-28 | 2018-04-10 | 北京北元安达电子有限公司 | Open type residual current transformer |
| CN207399442U (en) * | 2017-11-21 | 2018-05-22 | 重庆赛帕斯汽车零部件有限公司 | A kind of automobile using loudspeaker mask assembly |
| CN207765248U (en) * | 2017-12-14 | 2018-08-24 | 福建创四方电子有限公司 | A kind of open-close type current transformer |
| CN209525381U (en) * | 2019-01-23 | 2019-10-22 | 柏宜照明（上海）股份有限公司 | The residual current transformer of fool proof assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109655649A (en) | 2019-04-19 |
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