CN217239197U - Clamp-on current transformer capable of improving wiring reliability - Google Patents
Clamp-on current transformer capable of improving wiring reliability Download PDFInfo
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- CN217239197U CN217239197U CN202220412424.9U CN202220412424U CN217239197U CN 217239197 U CN217239197 U CN 217239197U CN 202220412424 U CN202220412424 U CN 202220412424U CN 217239197 U CN217239197 U CN 217239197U
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Abstract
The utility model discloses a pincerlike current transformer for improving wiring reliability, which comprises a left shell and a right shell, wherein the upper parts of the left shell and the right shell are matched through a hole shaft to realize rotating opening and rotating folding, and semi-annular hollow cavities are respectively arranged on the left shell and the right shell; a left iron core is arranged in the semi-annular hollow cavity of the left shell, a right iron core is arranged in the semi-annular hollow cavity of the right shell, induction coils are respectively wound on the left iron core and the right iron core, insulating tapes are respectively arranged between the left iron core and the induction coils and between the right iron core and the induction coils, and spring pieces for elastically pressing the left iron core and the right iron core after the left iron core and the right iron core are closed are arranged between the inner cavity wall of the semi-annular hollow cavity and the induction coils; a PCB wiring board is fixed inside one of the left shell and the right shell. The utility model provides high assembly wiring's efficiency, the quality of wiring and current detection's reliability.
Description
Technical Field
The utility model relates to a current transformer technical field, concretely relates to improve pincerlike current transformer of wiring reliability.
Background
The current transformer consists of a closed iron core and a winding, and is an instrument for realizing current measurement by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle.
The traditional current transformer is a closed current transformer, so that the measurement operation is inconvenient and the safety is poor. With the development of power automation technology, the wiring of the power department in the relay protection secondary circuit is more and more dense, and people need to detect the current signal of one wire in the dense wire turns more and more. Therefore, the split core type current transformer is convenient to use and wide in application, and a tested line can be free from being disconnected by using the split core type current transformer.
However, the split core type current transformer in the prior art has the following problems: the lead-out wire of the induction coil of the current transformer is arranged in disorder, so that the assembly and wiring efficiency is low, and the lead-out wire of the induction coil is thin in diameter, so that the lead-out wire is easy to break. If a transition connection line is arranged between the outgoing line of the induction coil and the external data line, the wiring efficiency is further reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an improve pincerlike current transformer of wiring reliability aims at improving the efficiency of assembly wiring and the quality of wiring. The specific technical scheme is as follows:
a pincerlike current transformer for improving wiring reliability comprises a left shell and a right shell, wherein the lower parts of the left shell and the right shell are rotatably connected through hole-shaft matching, the upper parts of the left shell and the right shell are rotatably opened and rotatably closed through the hole-shaft matching, semi-annular hollow cavities are respectively arranged on the left shell and the right shell, and annular hollow cavities are formed between the upper parts of the left shell and the right shell when the left shell and the right shell are rotatably closed; a left iron core is arranged in the semi-annular hollow cavity of the left shell, a right iron core is arranged in the semi-annular hollow cavity of the right shell, induction coils are respectively wound on the left iron core and the right iron core, insulating tapes are respectively arranged between the left iron core and the induction coils and between the right iron core and the induction coils, and spring pieces used for elastically pressing the left iron core and the right iron core after the left iron core and the right iron core are closed are arranged between the inner cavity wall of the semi-annular hollow cavity and the induction coils; and a PCB wiring board is fixed in one of the left shell and the right shell.
Preferably, the PCB terminal block is fixed at a lower position inside the right housing, and a terminal hole is further provided at a lower position inside the right housing.
The utility model discloses in be located on the left side casing hole axle cooperation position between left side casing and the right casing is provided with a locating shaft respectively lie in on the casing of the right side hole axle cooperation position between left side casing and the right casing is provided with a position sleeve respectively, the position sleeve rotates and sets up the location is epaxial.
Preferably, a left arc-shaped retaining wall is arranged at the peripheral left side position of the hole shaft matching position between the left shell and the right shell on the left shell, a right arc-shaped retaining wall is arranged at the peripheral right side position of the hole shaft matching position between the left shell and the right shell on the right shell, and the left shell and the right shell are elastically folded by a torsion spring sleeved on the positioning sleeve; and the two ends of the torsion spring are elastically abutted to the left arc-shaped retaining wall and the right arc-shaped retaining wall respectively.
Preferably, the left shell is formed by the involution of a front left shell and a rear left shell, and an iron core passing hole for passing an iron core is formed in the rotating and folding position of the left shell after the involution of the front left shell and the rear left shell.
Preferably, the front left shell is provided with a plurality of aligning pins, the rear left shell is provided with a plurality of aligning holes, and the aligning pins of the front left shell and the rear left shell are correspondingly matched with the aligning holes when the front left shell and the rear left shell are connected in an aligning way.
Preferably, the right shell is formed by folding a front right shell and a rear right shell, and an iron core through hole for passing an iron core is formed in a rotating folding position of the right shell after the front right shell and the rear right shell are folded.
Preferably, the front right shell is provided with a plurality of aligning pins, the rear right shell is provided with a plurality of aligning holes, and the aligning pins of the front right shell and the rear right shell are correspondingly matched with the aligning holes when the front right shell and the rear right shell are connected in an aligning way.
In order to improve the involution reliability and further improve the current detection precision and the detection reliability of the pincerlike current transformer, a clamping groove is arranged at the right side position of the lower part of the front right shell, a clamping tongue is arranged at the right side position of the lower part of the rear right shell, and the clamping groove is correspondingly matched with the clamping tongue when the front right shell and the rear right shell are involuted and connected; and a clamping groove and a clamping tongue which are matched with each other are arranged at the involution position between the left shell and the right shell.
Preferably, a plurality of strip-shaped bulges which are arranged in parallel at intervals are arranged on the left side surface of the lower part of the left shell.
The strip-shaped protrusions are located on the holding portion of the pincer-shaped current transformer, and can play a good anti-skidding role, so that the holding operation of the pincer-shaped current transformer is facilitated.
And the outgoing line of the induction coil is connected with the PCB wiring board, and an external data line passes through the wiring hole on the right shell and then is connected with the PCB wiring board.
The utility model has the advantages that:
first, the utility model discloses an improve pincerlike current transformer of wiring reliability through set up the PCB wiring board in the casing, can be so that induction coil's wire winding and external data line connect respectively on the PCB wiring board, improved the efficiency of assembly wiring from this to the quality of wiring has been improved.
Second, the utility model discloses an improve pincerlike current transformer of wiring reliability sets up insulating adhesive tape between iron core and the induction coil and replaces bobbin, can make pincerlike current transformer structure compacter to the convenience that pincerlike current transformer used has been improved.
Third, the utility model discloses an improve pincerlike current transformer of wiring reliability pushes up tightly through the spring leaf between left side iron core and the right iron core for pincerlike current transformer has further improved the reliability that detects on compact structure's basis again.
Fourth, the utility model discloses an improve pincerlike current transformer of wiring reliability, between left casing and the right casing to the position be provided with mutually supporting draw-in groove and latch, be favorable to improving the reliability to closing, and then improve pincerlike current transformer's detection precision.
Drawings
Fig. 1 is a schematic structural diagram of a pincer-shaped current transformer for improving wiring reliability according to the present invention;
FIG. 2 is a schematic view of the front left housing, front right housing and internal torsion spring of FIG. 1 with the interior torsion springs removed;
FIG. 3 is a schematic view of the structure of the left housing;
FIG. 4 is a schematic view of the rear left housing;
FIG. 5 is a schematic structural view of the front left housing;
FIG. 6 is a schematic structural view of the front right housing;
FIG. 7 is a schematic view of the torsion spring;
fig. 8 is a schematic structural diagram of the connection of the split core current transformer and the external data line.
In the figure: 1. the device comprises a left shell, a right shell, a semi-annular hollow cavity, a left iron core, a right iron core, a spring piece, a PCB wiring board, 8, a wiring hole, 9, a positioning shaft, 10, a positioning sleeve, 11, a left arc-shaped retaining wall, 12, a right arc-shaped retaining wall, 13, a torsion spring, 14, a front left shell, 15, a rear left shell, 16 and an iron core penetrating hole, 17, a closing pin, 18, a closing hole, 19, a front right shell, 20, a rear right shell, 21, an external data line, 22, a clamping groove, 23, a clamping tongue, 24 and a strip-shaped protrusion.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 to 8 show an embodiment of a pincer-like current transformer for improving wiring reliability of the present invention, which includes a left casing 1 and a right casing 2, wherein the lower parts of the left casing 1 and the right casing 2 are rotatably connected by hole-shaft fit, the upper parts of the left casing 1 and the right casing 2 are rotatably opened and rotatably closed by the hole-shaft fit, semi-annular hollow cavities 3 are respectively disposed on the left casing 1 and the right casing 2, and an annular hollow cavity is formed between the upper parts of the left casing 1 and the right casing 2 when the left casing 1 and the right casing 2 are rotatably closed; a left iron core 4 is arranged in the semi-annular hollow cavity 3 of the left shell 1, a right iron core 5 is arranged in the semi-annular hollow cavity 3 of the right shell 2, induction coils (not shown in the figure) are respectively wound on the left iron core 4 and the right iron core 5, insulating adhesive tapes (not shown in the figure) are respectively arranged between the left iron core 4 and the induction coils and between the right iron core 5 and the induction coils, and spring pieces 6 for elastically compressing the left iron core 4 and the right iron core 5 after the left iron core 4 and the right iron core 5 are folded are arranged between the inner cavity wall of the semi-annular hollow cavity 3 and the induction coils; a PCB terminal board 7 is further fixed to the inside of one of the left and right cases 1 and 2.
Preferably, the PCB terminal block 7 is fixed at a lower position inside the right housing 2, and a terminal hole 8 is further provided at a lower position inside the right housing 2.
In this embodiment, a positioning shaft 9 is respectively disposed at a hole-shaft matching portion of the left casing 1 between the left casing 1 and the right casing 2, a positioning sleeve 10 is respectively disposed at a hole-shaft matching portion of the right casing 2 between the left casing 1 and the right casing 2, and the positioning sleeve 10 is rotatably disposed on the positioning shaft 9.
Preferably, a left arc-shaped retaining wall 11 is arranged at the peripheral left side position of the hole shaft matching position between the left casing 1 and the right casing 2 on the left casing 1, a right arc-shaped retaining wall 12 is arranged at the peripheral right side position of the hole shaft matching position between the left casing 1 and the right casing 2 on the right casing 2, and the left casing 1 and the right casing 2 are elastically folded by a torsion spring 13 sleeved on the positioning sleeve 10; wherein, the two ends of the torsion spring 13 are respectively elastically abutted against the left side arc-shaped retaining wall 11 and the right side arc-shaped retaining wall 12.
Preferably, the left housing 1 is formed by a front left housing 14 and a rear left housing 15 which are combined, and an iron core passing hole 16 for passing an iron core is arranged at a rotating and folding position of the left housing 14 after the front left housing 14 and the rear left housing 15 are combined.
Preferably, a plurality of matching pins 17 are arranged on the front left shell 14, a plurality of matching holes 18 are arranged on the rear left shell 15, and the matching pins 17 are correspondingly matched with the matching holes 18 when the front left shell 14 and the rear left shell 15 are connected in a matching manner.
Preferably, the right housing 2 is formed by a front right housing 19 and a rear right housing 20 which are combined together, and an iron core passing hole 16 for passing an iron core is arranged at a rotating and folding position of the right housing 2 after the front right housing 19 and the rear right housing 20 are combined together.
Preferably, a plurality of aligning pins 17 are arranged on the front right shell 19, a plurality of aligning holes 18 are arranged on the rear right shell 20, and the aligning pins 17 are correspondingly matched with the aligning holes 18 when the front right shell 19 and the rear right shell 20 are connected in an aligning manner.
In order to improve the involution reliability and further improve the current detection precision and the detection reliability of the pincerlike current transformer, a clamping groove 22 is arranged at the lower right side position of the front right shell 19, a clamping tongue 23 is arranged at the lower right side position of the rear right shell 20, and the clamping groove 22 is correspondingly matched with the clamping tongue 23 when the front right shell 19 and the rear right shell 20 are involuted and connected; the involution position between the left shell 1 and the right shell 2 is provided with a clamping groove 22 and a clamping tongue 23 which are mutually matched.
Preferably, a plurality of strip-shaped protrusions 24 are arranged on the left side surface of the lower part of the left shell 1 at intervals in parallel.
The strip-shaped protrusions 24 are located at the holding portion of the pincer-shaped current transformer, and can play a good anti-skidding role, so that the holding operation of the pincer-shaped current transformer is facilitated.
In this embodiment, the outgoing line of the induction coil is connected to the PCB wiring board 7, and the external data line 21 passes through the wiring hole 8 of the right housing 2 and then is connected to the PCB wiring board 7.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A pincerlike current transformer capable of improving wiring reliability is characterized by comprising a left shell and a right shell, wherein the lower parts of the left shell and the right shell are in rotating connection through hole-shaft matching, the upper parts of the left shell and the right shell are in rotating opening and rotating closing through hole-shaft matching, semi-annular hollow cavities are respectively arranged on the left shell and the right shell, and an annular hollow cavity is formed between the upper parts of the left shell and the right shell when the left shell and the right shell are in rotating closing; a left iron core is arranged in the semi-annular hollow cavity of the left shell, a right iron core is arranged in the semi-annular hollow cavity of the right shell, induction coils are respectively wound on the left iron core and the right iron core, insulating tapes are respectively arranged between the left iron core and the induction coils and between the right iron core and the induction coils, and spring pieces used for elastically pressing the left iron core and the right iron core after the left iron core and the right iron core are closed are arranged between the inner cavity wall of the semi-annular hollow cavity and the induction coils; and a PCB wiring board is also fixed in one of the left shell and the right shell.
2. The current transformer according to claim 1, wherein the PCB terminal block is fixed to a lower position inside the right casing, and a terminal hole is further provided at a lower position inside the right casing.
3. The split core type current transformer for improving the wiring reliability as claimed in claim 1, wherein a positioning shaft is respectively disposed at the hole shaft matching portions between the left casing and the right casing on the left casing, and a positioning sleeve is respectively disposed at the hole shaft matching portions between the left casing and the right casing on the right casing, and the positioning sleeves are rotatably disposed on the positioning shafts.
4. The pincer-shaped current transformer for improving the wiring reliability as claimed in claim 3, wherein a left arc-shaped retaining wall is arranged at a position on the left casing, which is located on the left side of the periphery of the hole-axis matching portion between the left casing and the right casing, a right arc-shaped retaining wall is arranged at a position on the right casing, which is located on the right side of the periphery of the hole-axis matching portion between the left casing and the right casing, and the left casing and the right casing are elastically folded by a torsion spring sleeved on the positioning sleeve; wherein, the both ends of torsional spring elasticity respectively lean on and be in left side arc barricade and right side arc barricade on.
5. The split core type current transformer for improving the wiring reliability as claimed in claim 1, wherein the left casing is formed by a front left casing and a rear left casing which are combined, and an iron core through hole for passing an iron core is arranged at a rotating and combining position of the left casing after the front left casing and the rear left casing are combined.
6. The split core type current transformer for improving the wiring reliability as claimed in claim 5, wherein the front left shell is provided with a plurality of matching pins, the rear left shell is provided with a plurality of matching holes, and the matching pins of the front left shell and the rear left shell are correspondingly matched with the matching holes when the front left shell and the rear left shell are connected in a matching manner.
7. The split core type current transformer for improving the wiring reliability as claimed in claim 1, wherein the right housing is formed by a front right housing and a rear right housing which are combined together, and an iron core through hole for passing an iron core is arranged at a rotating and folding part of the right housing after the front right housing and the rear right housing are combined together.
8. The split core type current transformer for improving the wiring reliability as claimed in claim 7, wherein the front right housing is provided with a plurality of aligning pins, the rear right housing is provided with a plurality of aligning holes, and the aligning pins of the front right housing and the rear right housing are correspondingly matched with the aligning holes when the front right housing and the rear right housing are connected in an aligning manner.
9. The split-core type current transformer for improving the wiring reliability as claimed in claim 8, wherein a slot is provided at a lower right position of the front right housing, a latch is provided at a lower right position of the rear right housing, and the slot is correspondingly adapted to the latch when the front right housing and the rear right housing are connected in an involutory manner; and a clamping groove and a clamping tongue which are matched with each other are arranged at the involution position between the left shell and the right shell.
10. The split core type current transformer for improving the wiring reliability as claimed in claim 2, wherein a plurality of strip-shaped protrusions are arranged on the left side surface of the lower portion of the left shell in parallel and at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220412424.9U CN217239197U (en) | 2022-02-28 | 2022-02-28 | Clamp-on current transformer capable of improving wiring reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220412424.9U CN217239197U (en) | 2022-02-28 | 2022-02-28 | Clamp-on current transformer capable of improving wiring reliability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217239197U true CN217239197U (en) | 2022-08-19 |
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ID=82841271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220412424.9U Active CN217239197U (en) | 2022-02-28 | 2022-02-28 | Clamp-on current transformer capable of improving wiring reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217239197U (en) |
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2022
- 2022-02-28 CN CN202220412424.9U patent/CN217239197U/en active Active
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