CN218939424U - Combined transformer - Google Patents
Combined transformer Download PDFInfo
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- CN218939424U CN218939424U CN202222961685.9U CN202222961685U CN218939424U CN 218939424 U CN218939424 U CN 218939424U CN 202222961685 U CN202222961685 U CN 202222961685U CN 218939424 U CN218939424 U CN 218939424U
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Abstract
The utility model relates to a transformer, in particular to a combined transformer. The device comprises an insulating shell, wherein a coil is arranged in the insulating shell, a yielding hole which is convenient for a detection circuit to pass through is arranged on the shell corresponding to a central hole of the coil, a flat cable connector is arranged on the insulating shell, and the coil is electrically connected with the flat cable connector. The coil is characterized by comprising an integrally formed annular framework, wherein the annular framework is annular, an insulating layer covers the outer surface of the annular framework, and wires are uniformly wound on the outer side of the insulating layer along the circumferential direction of the coil, so that a circular annular coil is formed, and two ends of each wire are fixedly connected with welding pins of the flat cable connector one by one respectively, so that the coil is electrically connected with the flat cable connector. The current transformer has simple structure and small size.
Description
Technical Field
The utility model relates to a transformer, in particular to a combined transformer which is simple in manufacturing process and small in overall dimension.
Background
The combined transformer is also called as an instrument transformer, and can change large current into small current for measuring or protecting a system. The function of the device is mainly to convert large current into small current (such as 100mA or 50mA and the like refer to rated value) in proportion so as to realize standardization and miniaturization of measuring instruments, protecting equipment and automatic control equipment.
At present, the traditional transformer mainly comprises an insulating shell, a coil is arranged in the insulating shell, a yielding hole which is convenient for a detection circuit to pass through is arranged on the shell corresponding to a central hole of the coil, a flat cable connector is arranged on the insulating shell, and the coil is electrically connected with the flat cable connector. The coil comprises a Chinese character 'ri' shaped annular framework, wires are wound on the annular framework, and the Chinese character 'ri' shaped annular framework is formed by splicing two E-shaped annular frameworks through a buckle. The Chinese character 'ri' shaped annular framework of the traditional transformer is formed by splicing two E-shaped annular frameworks through buckles, namely the Chinese character 'ri' shaped annular framework of the traditional transformer needs to have a splicing structure, and the structure is complex. Moreover, the central hole of the Chinese character 'ri' is a rectangular hole, the length of the short side of the rectangular hole is the maximum penetrable outer diameter, and the part of the long side larger than the short side is an unnecessary part, so that the whole transformer has larger volume.
Disclosure of Invention
The utility model aims to provide a combined transformer which is simple in structure and small in size.
In order to solve the problems, the following technical scheme is provided:
the combined transformer comprises an insulating shell, wherein a coil is arranged in the insulating shell, a yielding hole which is convenient for a detection line to pass through is arranged on the shell corresponding to a central hole of the coil, a flat cable connector is arranged on the insulating shell, and the coil is electrically connected with the flat cable connector. The coil is characterized by comprising an integrally formed annular framework, wherein the annular framework is annular, an insulating layer covers the outer surface of the annular framework, and wires are uniformly wound on the outer side of the insulating layer along the circumferential direction of the coil, so that a circular annular coil is formed, and two ends of each wire are fixedly connected with welding pins of the flat cable connector one by one respectively, so that the coil is electrically connected with the flat cable connector.
The insulating shell comprises two cylindrical shell units, wherein central holes are formed in the bottoms of the shell units, and round tubes are concentrically and integrally connected to the inner surfaces of the bottoms of the shell units corresponding to the central holes. One side of the outer side wall of each shell unit is provided with a protruding part protruding outwards in the radial direction, and corresponding positions of the two protruding parts are provided with through grooves. The cylinder mouth ends, the protruding parts and the circular tubes of the two shell units are all in butt joint and fixed together in a welding mode to form the insulating shell, the central holes of the two circular tubes form the abdication holes, the through grooves of the two protruding blocks form cavities for accommodating the flat cable connectors, and the coil is sleeved on the circular tubes.
The coil comprises a power supply coil and an air core coil which are sequentially and coaxially fixed in the shell, an insulating ring is arranged between the power supply coil and the air core coil, and the abdication holes pass through central holes of the power supply coil, the air core coil and the insulating ring; the power supply coil and the air core coil are electrically connected with the flat cable connector.
The coil comprises a metering coil and a protection coil which are sequentially and coaxially fixed in the shell, an insulating ring is arranged between the metering coil and the protection coil, and the abdication holes pass through central holes of the metering coil, the protection coil and the insulating ring; the metering coil and the protection coil are electrically connected with the flat cable connector.
The coil contains power supply coil, air core coil and measurement coil, and these three coils are coaxial fixed in proper order in the casing, and have the insulating ring between two adjacent coils, the centre bore that the hole of stepping down all passed from power supply coil, air core coil, measurement coil and insulating ring. The power supply coil, the hollow coil and the metering coil are all electrically connected with the flat cable connector.
By adopting the scheme, the method has the following advantages:
because the coil of the combined transformer comprises the integrally formed annular framework, the magnetism is annular, the outer surface of the annular framework is covered with the insulating layer, and the outer side of the insulating layer is uniformly wound with the wires along the circumferential direction of the coil, so that the annular coil is formed, and the two ends of the wires are fixedly connected with the welding pins of the flat cable connector one by one. The annular framework of the transformer is of an integrated structure, and compared with two E-shaped clamping structures in the background, the clamping structure is eliminated, and the structure of the whole transformer is simplified. Moreover, the largest penetrable outer diameter of the annular coil is the inner diameter of the annular coil, and no redundant part exists, so that the volume of the whole transformer is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the construction of a combined transformer of the present utility model;
FIG. 2 is a schematic structural diagram of an implementation one;
FIG. 3 is a schematic structural diagram of an implementation II;
fig. 4 is a schematic structural diagram of an implementation three.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, the combined transformer of the utility model comprises an insulating housing, wherein a coil is arranged in the insulating housing, a yielding hole which is convenient for a detection line to pass through is arranged on the housing corresponding to a central hole of the coil, a flat cable connector 6 is arranged on the insulating housing, and the coil is electrically connected with the flat cable connector 6. The coil includes integrated into one piece's annular skeleton 7, and this annular skeleton 7 is annular, and annular skeleton 7 surface covers has insulating layer 8, and the outside of insulating layer 8 has evenly wound the wire along the circumference of coil to form annular coil, be one-to-one fixed form connection between the welding needle of wire connector 6 respectively at the both ends of wire, make coil and winding displacement connector 6 be the electricity and be connected. The wire is an enameled wire.
The insulating shell comprises two cylindrical shell units, wherein the bottoms of the shell units are respectively provided with a central hole, and round tubes 12 are concentrically and integrally connected to the inner surfaces of the bottoms of the shell units corresponding to the central holes. The outer side walls of the two shell units are provided with protruding parts 11 which extend outwards in the radial direction, and the corresponding positions of the two protruding parts 11 are provided with through grooves. The barrel mouth ends of the two shell units, the protruding parts 11 and the round pipes 12 are all in butt joint and fixed together in a welding mode to form the insulating shell, the center holes of the two round pipes 12 form the abdication holes, the through grooves of the two protruding blocks form a cavity 10 for accommodating the flat cable connector 6, and the coil is sleeved on the round pipes 12.
The coil contains power supply coil 3 and air core coil 4, and they are coaxial fixed in the casing in proper order, and have insulating ring 5 between power supply coil 3 and air core coil 4, the centre bore that the hole of stepping down all passed from power supply coil 3, air core coil 4 and insulating ring 5. The power supply coil 3 and the air core coil 4 are electrically connected with the flat cable connector 6.
In this embodiment, the soft magnetic material is wound to form an annular skeleton 7 of the power supply coil 3, the outer layer of the annular skeleton 7 is insulated to form an insulating layer 8, and the enameled wire is uniformly wound on the insulating layer 8 to form the power supply coil 3. The enameled wire is uniformly wound on an annular framework 7 made of non-magnetic materials to form the air-core coil 4. The two ends of the enameled wires of the power supply coil 3 and the air core coil 4 are respectively welded on the welding needle, and the two ends of the enameled wires are separated by an insulating sheet. The two coils are assembled into the two shell units in any order, the welding needle is fixed on any one shell unit, and finally the other shell unit 1 is installed for sealing. The two housing units 1 are bonded to each other at their intersections by ultrasonic welding and sealed.
Example two
As shown in fig. 1 and 3, the combined transformer of the utility model comprises an insulating housing, wherein a coil is arranged in the insulating housing, a yielding hole which is convenient for a detection line to pass through is arranged on the housing corresponding to a central hole of the coil, a flat cable connector 6 is arranged on the insulating housing, and the coil is electrically connected with the flat cable connector 6. The coil includes integrated into one piece's annular skeleton 7, and this annular skeleton 7 is annular, and annular skeleton 7 surface covers has insulating layer 8, and the outside of insulating layer 8 has evenly wound the wire along the circumference of coil to form annular coil, be one-to-one fixed form connection between the welding needle of wire connector 6 respectively at the both ends of wire, make coil and winding displacement connector 6 be the electricity and be connected. The wire is an enameled wire.
The insulating shell comprises two cylindrical shell units, wherein the bottoms of the shell units are respectively provided with a central hole, and round tubes 12 are concentrically and integrally connected to the inner surfaces of the bottoms of the shell units corresponding to the central holes. The outer side walls of the two shell units are provided with protruding parts 11 which extend outwards in the radial direction, and the corresponding positions of the two protruding parts 11 are provided with through grooves. The barrel mouth ends of the two shell units, the protruding parts 11 and the round pipes 12 are all in butt joint and fixed together in a welding mode to form the insulating shell, the center holes of the two round pipes 12 form the abdication holes, the through grooves of the two protruding blocks form a cavity 10 for accommodating the flat cable connector 6, and the coil is sleeved on the round pipes 12.
The coil comprises a metering coil 9 and a protection coil 2 which are sequentially and coaxially fixed in a shell, an insulating ring 5 is arranged between the metering coil 9 and the protection coil 2, and the yielding holes pass through central holes of the metering coil 9, the protection coil 2 and the insulating ring 5; the metering coil 9 and the protection coil 2 are electrically connected with the flat cable connector 6.
In this embodiment, the soft magnetic material is wound to form an annular skeleton 7 of the metering coil 9 and the protection coil 2, the outer layer of the annular skeleton 7 is insulated to form an insulating layer 8, and the enameled wire is uniformly wound on the insulating layer 8 to form the metering coil 9 and the protection coil 2. The two ends of the enamelled wires of the metering coil 9 and the protecting coil 2 are respectively welded on the welding needle, and are separated by an insulating sheet in the middle of the two coils. The two coils are assembled into the two shell units in any order, the welding needle is fixed on any one shell unit, and finally the other shell unit 1 is installed for sealing. The two housing units 1 are bonded to each other at their intersections by ultrasonic welding and sealed.
Example III
As shown in fig. 1 and 4, the combined transformer of the utility model comprises an insulating housing, wherein a coil is arranged in the insulating housing, a yielding hole which is convenient for a detection line to pass through is arranged on the housing corresponding to a central hole of the coil, a flat cable connector 6 is arranged on the insulating housing, and the coil is electrically connected with the flat cable connector 6. The coil includes integrated into one piece's annular skeleton 7, and this annular skeleton 7 is annular, and annular skeleton 7 surface covers has insulating layer 8, and the outside of insulating layer 8 has evenly wound the wire along the circumference of coil to form annular coil, be one-to-one fixed form connection between the welding needle of wire connector 6 respectively at the both ends of wire, make coil and winding displacement connector 6 be the electricity and be connected. The wire is an enameled wire.
The insulating shell comprises two cylindrical shell units, wherein the bottoms of the shell units are respectively provided with a central hole, and round tubes 12 are concentrically and integrally connected to the inner surfaces of the bottoms of the shell units corresponding to the central holes. The outer side walls of the two shell units are provided with protruding parts 11 which extend outwards in the radial direction, and the corresponding positions of the two protruding parts 11 are provided with through grooves. The barrel mouth ends of the two shell units, the protruding parts 11 and the round pipes 12 are all in butt joint and fixed together in a welding mode to form the insulating shell, the center holes of the two round pipes 12 form the abdication holes, the through grooves of the two protruding blocks form a cavity 10 for accommodating the flat cable connector 6, and the coil is sleeved on the round pipes 12.
The coil contains power supply coil 3, hollow coil 4 and measurement coil 9, and these three coils are coaxial fixed in proper order in the casing, and have insulating ring 5 between two adjacent coils, the hole of stepping down all passes from power supply coil 3, hollow coil 4, measurement coil 9 and insulating ring 5's centre bore. The power supply coil 3, the hollow coil 4 and the metering coil 9 are all electrically connected with the flat cable connector 6.
In this embodiment, the soft magnetic material is wound to form an annular skeleton 7 of the electric coil and the metering coil 9, the outer layer of the annular skeleton 7 is insulated to form an insulating layer 8, and the enameled wire is uniformly wound on the insulating layer 8 to form the power supply coil 3 and the metering coil 9. The enameled wire is uniformly wound on the annular framework 7 made of non-magnetic materials to form the hollow coil 4. The two ends of the enameled wires of the power supply coil 3, the hollow coil 4 and the metering coil 9 are respectively welded on the welding needle, and are separated in the middle of the three coils through insulating sheets. The three coils are assembled into two shell units in any order, the welding needle is fixed on any one shell unit, and finally the other shell unit 1 is installed for sealing. The two housing units 1 are bonded to each other at their intersections by ultrasonic welding and sealed.
The framework of the coil and the annular framework 7 in the combined transformer are annular, so that the enameled wire can be wound more uniformly, the current signal output by the transformer is more stable, the detection precision is higher, and the anti-interference performance is better. The coil replaces the original Chinese character 'ri' shaped annular framework 7 by the annular framework 7, so that the power supply coil 3 is simpler and more convenient to install. And the annular skeleton 7 of the shape of a Chinese character 'ri' is formed by splicing two E-shaped annular skeletons 7 through the buckle, and the annular skeleton 7 is of an integrated structure, so that the coil appearance is reduced, the space is saved, the output model is more stable, and the volume of the transformer is smaller. Finally, the original glue is replaced by ultrasonic welding for fixing and the shell is fastened for fixing, so that the shell is simpler and more convenient in appearance, the time waiting for glue to solidify is reduced, the production time of the transformer is shortened, and the production cost is reduced.
Claims (5)
1. A combined transformer comprises an insulating shell, wherein a coil is arranged in the insulating shell, a yielding hole which is convenient for a detection line to pass through is formed in the shell corresponding to a central hole of the coil, a flat cable connector (6) is arranged on the insulating shell, and the coil is electrically connected with the flat cable connector (6); the coil is characterized by comprising an integrally formed annular framework (7), wherein the annular framework (7) is annular, an insulating layer (8) is covered on the outer surface of the annular framework (7), wires are uniformly wound on the outer side of the insulating layer (8) along the circumferential direction of the coil, so that a circular annular coil is formed, two ends of each wire are fixedly connected with welding pins of the flat cable connector (6) one by one respectively, and the coil is electrically connected with the flat cable connector (6).
2. The combined transformer according to claim 1, characterized in that the insulating housing comprises two cylindrical housing units, wherein the bottoms of the housing units are provided with central holes, and the inner surfaces of the bottoms of the housing units corresponding to the central holes are concentrically and integrally connected with round tubes (12); one side of the outer side wall of each shell unit is provided with a protruding part (11) protruding outwards in the radial direction, and corresponding positions of the two protruding parts (11) are provided with through grooves; the barrel mouth ends, the protruding parts (11) and the round pipes (12) of the two shell units are all in butt joint and fixed together in a welding mode to form the insulating shell, the center holes of the two round pipes (12) form the abdication holes, the through grooves of the two protruding blocks form a cavity (10) for accommodating the flat cable connector (6), and the coil is sleeved on the round pipes (12).
3. The combined transformer according to claim 2, characterized in that the coil comprises a power supply coil (3) and an air core coil (4) which are coaxially fixed in the housing in turn, and an insulating ring (5) is arranged between the power supply coil (3) and the air core coil (4), and the yielding holes pass through the central holes of the power supply coil (3), the air core coil (4) and the insulating ring (5); the power supply coil (3) and the air coil (4) are electrically connected with the flat cable connector (6).
4. The combined transformer according to claim 2, characterized in that the coil comprises a metering coil (9) and a protection coil (2) which are coaxially fixed in sequence in the housing, and an insulating ring (5) is arranged between the metering coil (9) and the protection coil (2), and the yielding holes pass through central holes of the metering coil (9), the protection coil (2) and the insulating ring (5); the metering coil (9) and the protection coil (2) are electrically connected with the flat cable connector (6).
5. The combined transformer according to claim 2, characterized in that the coils comprise a power supply coil (3), an air coil (4) and a metering coil (9), which are coaxially fixed in sequence in the housing, and an insulating ring (5) is arranged between two adjacent coils, and the yielding holes pass through the central holes of the power supply coil (3), the air coil (4), the metering coil (9) and the insulating ring (5); the power supply coil (3), the hollow coil (4) and the metering coil (9) are electrically connected with the flat cable connector (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961685.9U CN218939424U (en) | 2022-11-10 | 2022-11-10 | Combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961685.9U CN218939424U (en) | 2022-11-10 | 2022-11-10 | Combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218939424U true CN218939424U (en) | 2023-04-28 |
Family
ID=86094254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222961685.9U Active CN218939424U (en) | 2022-11-10 | 2022-11-10 | Combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218939424U (en) |
-
2022
- 2022-11-10 CN CN202222961685.9U patent/CN218939424U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 28-18, North Section of Yanqiao, Xicheng Road, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province, 214174 Patentee after: WUXI ZIZO ELECTRIC Co.,Ltd. Address before: No. 1, Back Street, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province, 214174 Patentee before: WUXI ZIZO ELECTRIC Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |