CN216209776U

CN216209776U - GFCI coil pack

Info

Publication number: CN216209776U
Application number: CN202122479425.3U
Authority: CN
Inventors: 蔡峰毅; 刘荣茂; 苏金土; 李金果
Original assignee: Xiamen Ztc Technology Co ltd
Current assignee: Xiamen Ztc Technology Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-04-05
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a GFCI coil assembly which comprises a shell, a neutral magnetic ring coil, an electric leakage detection magnetic ring coil, a first pin module and a second pin module, wherein the first pin module comprises a first positioning embedded block and a plurality of first pins connected to the first positioning embedded block, the second pin module comprises a second positioning embedded block and a plurality of second pins connected to the second positioning embedded block, a coil installation cavity is formed in the shell, the neutral magnetic ring coil and the electric leakage detection magnetic ring coil are sequentially installed in the coil installation cavity, a first installation position and a second installation position are formed in the coil installation cavity, the first pin module is fixedly embedded in the first installation position of the shell through the first positioning embedded block, and the second pin module is fixedly embedded in the second installation position of the shell through the second positioning embedded block. The welding operation of each pin module and the coil can be firstly welded outside, the problem of small welding space does not exist, and the installation process of the pin modules on the shell is simple, convenient, fast, stable and reliable.

Description

GFCI coil pack

Technical Field

The utility model relates to the technical field of leakage current detection devices, in particular to a GFCI coil assembly.

Background

The GFCI coil assembly is a detection element for leakage current detection, and its main function is to detect leakage current through the transformer core and convert the leakage current of the primary circuit into an output voltage of the secondary circuit. The GFCI coil assembly is one of the most critical components in leakage detection of a leakage protector. The connection and leading-out mode of the coil of the existing GFCI coil assembly is that the coil is connected and led out through a contact pin on a shell, as shown in figure 3, the contact pin assembled in the mode has the defects that the contact pin is not easy to assemble, the welding space is small, the operation is not easy, the cold joint and the coil wire breakage are easy to cause, the welding part is exposed outside, the oxidation is easy, the electrical insulation risk is caused, and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a GFCI coil assembly, which mainly solves the technical problems that the contact pin of the GFCI coil assembly is difficult to assemble, the welding space is small and the operation is difficult.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a GFCI coil assembly comprises a shell, a neutral magnetic ring coil, a leakage detection magnetic ring coil, a first pin module electrically connected with the neutral magnetic ring coil and a second pin module electrically connected with the leakage detection magnetic ring coil, wherein the first pin module comprises a first positioning insert block and a plurality of first pins vertically connected to the first positioning insert block, the second pin module comprises a second positioning insert block and a plurality of second pins vertically connected to the second positioning insert block, a coil installation cavity with an open end is formed in the shell, the neutral magnetic ring coil and the leakage detection magnetic ring coil are sequentially installed in the coil installation cavity, a first installation position and a second installation position are respectively formed on two sides of the coil installation cavity, and a first abdication slot and a second abdication slot which can abdicate the lower ends of the first pin and the second pin are respectively formed on the bottoms of the first installation position and the second installation position, the first pin module is embedded and fixed in a first installation position of the shell through the first positioning embedded block, the lower end of the first pin penetrates out of the shell downwards through the corresponding first abdicating notch, the second pin module is embedded and fixed in a second installation position of the shell through the second positioning embedded block, and the lower end of the second pin penetrates out of the shell downwards through the corresponding second abdicating notch.

Furthermore, the neutral magnetic ring coil and the electric leakage detection magnetic ring coil are connected together in an adhesive mode, and an insulating sheet is further arranged between the neutral magnetic ring coil and the electric leakage detection magnetic ring coil.

Furthermore, the outer side of the leakage detection magnetic ring coil is connected with a shielding sheet for shielding external signals through gluing.

Furthermore, the first installation position comprises a first embedding groove matched with the first positioning embedding block of the first pin module and a first yielding space capable of yielding the upper end of each first pin, the first pin module is fixed in the first installation position of the shell through the splicing embedding of the first positioning embedding block and the first embedding groove, and the upper end of each first pin is welded with the neutral magnetic ring coil to form electric connection; the second installation position comprises a second embedding groove matched with the second positioning embedding block of the second pin module and a second yielding space capable of yielding the upper end of each second pin, the second pin module is fixed in the second installation position of the shell through the splicing embedding of the second positioning embedding block and the second embedding groove, and the upper end of each second pin is welded with the electric leakage detection magnetic ring coil to form electric connection.

Further, all pack in first installation position and the second installation position and have the silica gel that can improve first contact pin module and second contact pin module gomphosis installation steadiness and each welding position insulation oxidation resistance.

The technical scheme has the following advantages or beneficial effects:

in the GFCI coil assembly, the first installation position and the second installation position are respectively formed at the two sides of the coil installation cavity in the shell, the first pin module electrically connected with the neutral magnetic ring coil and the second pin module electrically connected with the leakage detection magnetic ring coil can be welded outside firstly, and then the neutral magnetic ring coil and the leakage detection magnetic ring coil are sequentially arranged in the coil installation cavity of the shell, meanwhile, the first pin module is embedded and fixed in the first installation position of the shell through the first positioning embedded block, and the second pin module is embedded and fixed in the second installation position of the shell through the second positioning embedded block, so the design can improve the installation convenience of the pin modules on one hand, and the independent pin structures do not need to be inserted on the shell one by one, which is beneficial to improving the installation efficiency and the connection stability of the pins on the other hand, the first pin module electrically connected with the neutral magnetic ring coil and the second pin module electrically connected with the electric leakage detection magnetic ring coil can be welded outside before assembly, welding operation is convenient and fast, the problem of small welding space is avoided, welding quality is improved, and the problems of insufficient welding and coil disconnection are solved.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is an exploded perspective view of an embodiment of the present invention.

Fig. 3 is a prior art GFCI coil assembly housing and pin mounting arrangement.

Description of reference numerals:

1. the magnetic circuit comprises a shell, 2, a neutral magnetic ring coil, 3, a leakage detection magnetic ring coil, 4, a first pin module, 5, a second pin module, 6, an insulating sheet, 7, a shielding sheet, 11, a coil installation cavity, 12, a first installation position, 13, a second installation position, 14, a first abdicating notch, 15, a second abdicating notch, 41, a first positioning embedded block, 42, a first pin, 51, a second positioning embedded block, 52 and a second pin.

Detailed Description

The utility model is further described with reference to the following figures and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a GFCI coil assembly, including a housing 1, a neutral magnetic loop coil 2(GNT coil), a leakage detection magnetic loop coil 3(ZCT coil), a first pin module 4 electrically connected to the neutral magnetic loop coil 2, and a second pin module 5 electrically connected to the leakage detection magnetic loop coil 3, where the first pin module 4 includes a first positioning block 41 and a plurality of first pins 42 vertically connected to the first positioning block 41, the second pin module 5 includes a second positioning block 51 and a plurality of second pins 52 vertically connected to the second positioning block 51, a coil installation cavity 11 with an open end is formed in the housing 1, the neutral magnetic loop coil 2 and the leakage detection magnetic loop coil 3 are sequentially installed in the coil installation cavity 11, and a first installation site 12 and a second installation site 13 are respectively formed on two sides of the coil installation cavity 11, and the bottoms of the first installation position 12 and the second installation position 13 are respectively provided with a first abdicating notch 14 and a second abdicating notch 15 which can abdicating the lower ends of the first pin 42 and the second pin 52, the first pin module 4 is embedded and fixed in the first installation position 12 of the shell 1 through the first positioning insert block 41, the lower end of the first pin 42 penetrates out of the shell 1 downwards through the corresponding first abdicating notch 14, the second pin module 5 is embedded and fixed in the second installation position 13 of the shell 1 through the second positioning insert block 51, and the lower end of the second pin 52 penetrates out of the shell 1 downwards through the corresponding second abdicating notch 15. It can be understood that, in this embodiment, the first mounting locations 12 and the second mounting locations 13 are respectively formed at two sides of the coil mounting cavity 11 in the housing 1, the first pin module 4 electrically connected to the neutral magnetic ring coil 2 and the second pin module 5 electrically connected to the leakage detection magnetic ring coil 3 can be welded at the outside, and then the neutral magnetic ring coil 2 and the leakage detection magnetic ring coil 3 are sequentially placed into the coil mounting cavity 11 of the housing 1, meanwhile, the first pin module 4 is embedded and fixed in the first mounting location 12 of the housing 1 through the first positioning insert 41, and the second pin module 5 is embedded and fixed in the second mounting location 13 of the housing 1 through the second positioning insert 51, so that on one hand, the mounting convenience of the pin modules can be improved, and independent pin structures do not need to be inserted one by one on the housing 1, which is favorable for improving the mounting efficiency and connection stability of the pins, on the other hand, the first pin module 4 electrically connected with the neutral magnetic ring coil 2 and the second pin module 5 electrically connected with the leakage detection magnetic ring coil 3 can be welded outside before assembly, the welding operation is convenient and fast, the problem of small welding space is avoided, the welding quality is improved, and the problems of insufficient welding and coil disconnection are solved.

Referring to fig. 1 and 2, in a preferred embodiment, the neutral magnetic loop coil 2 and the leakage detecting magnetic loop coil 3 are adhered together, and an insulating sheet 6 is further disposed between the neutral magnetic loop coil 2 and the leakage detecting magnetic loop coil 3. Preferably, a shield sheet 7 for shielding an external signal is attached to the outer side of the leakage detecting magnet ring coil 3 by adhesion.

Referring to fig. 1 and fig. 2, in a preferred embodiment, the first mounting location 12 includes a first embedding slot adapted to the first positioning insert 41 of the first pin module 4 and a first yielding space capable of yielding the upper end of each first pin 42, the first pin module 4 is fixed in the first mounting location 12 of the housing 1 by the insertion and engagement of the first positioning insert 41 and the first embedding slot, and the upper end of each first pin 42 is welded to the neutral magnetic ring coil 2 to form an electrical connection; the second mounting position 13 includes a second embedding slot adapted to the second positioning embedding block 51 of the second pin module 5 and a second yielding space capable of yielding the upper end of each second pin 52, the second pin module 5 is fixed in the second mounting position 13 of the housing 1 by the insertion and embedding of the second positioning embedding block 51 and the second embedding slot, and the upper end of each second pin 52 is welded to the leakage detection magnetic ring coil 3 to form an electrical connection.

Referring to fig. 1 and 2, in a preferred embodiment, the first mounting locations 12 and the second mounting locations 13 are filled with silica gel capable of improving the stability of the embedded mounting of the first pin module 4 and the second pin module 5 and the insulation and oxidation resistance of each welding portion. It can be understood that, when installing in place in first installation position 12 and the second installation position 13 of casing 1 respectively as first contact pin module 4 and second contact pin module 5, through filling silica gel in first installation position 12 and second installation position 13, after the silica gel solidification, be favorable to improving the installation steadiness of each contact pin module in casing 1 on the one hand, can not produce the displacement easily and rock, on the other hand, can also play the anti-oxidation effect of sealed insulation to the welding position of each contact pin module, and then improved product stability in use and reliability, thereby guaranteed its life.

The assembly process of the GFCI coil assembly of the present application is: firstly, welding a neutral magnetic ring coil 2 and a corresponding first pin module 4 firmly, meanwhile, welding a leakage detection magnetic ring coil 3 and a corresponding second pin module 5 firmly, then coating silica gel on the inner wall of a coil mounting cavity 11 of a shell 1, then placing the neutral magnetic ring coil 2 into the coil mounting cavity 11, simultaneously embedding the first pin module 4 electrically connected with the neutral magnetic ring coil 2 into a first mounting position 12 of the shell 1 correspondingly, then coating the silica gel on the neutral magnetic ring coil 2 and attaching an insulating sheet 6, coating the silica gel on the inner end of the leakage detection magnetic ring coil 3, then embedding the leakage detection magnetic ring coil 3 into the coil mounting cavity 11 correspondingly, simultaneously embedding the second pin module 5 electrically connected with the leakage detection magnetic ring coil 3 into a second mounting position 13 of the shell 1 correspondingly, then coating the silica gel on the outer end of the leakage detection magnetic ring coil 3 and attaching a shielding sheet 7, and finally, silica gel is filled in the first installation position 12 and the second installation position 13 to ensure that the pin modules are stably connected with the shell, and the insulation and anti-oxidation performance of the welding parts of the pin modules are ensured.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not make the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention, so that all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Claims

1. A GFCI coil assembly, comprising: comprises a shell (1), a neutral magnetic ring coil (2), an electric leakage detection magnetic ring coil (3), a first pin module (4) electrically connected with the neutral magnetic ring coil (2) and a second pin module (5) electrically connected with the electric leakage detection magnetic ring coil (3), wherein the first pin module (4) comprises a first positioning embedded block (41) and a plurality of first pins (42) connected with the first positioning embedded block (41), the second pin module (5) comprises a second positioning embedded block (51) and a plurality of second pins (52) connected with the second positioning embedded block (51), a coil installation cavity (11) with an open end is formed in the shell (1), the neutral magnetic ring coil (2) and the electric leakage detection magnetic ring coil (3) are sequentially installed in the coil installation cavity (11), and a first installation position (12) and a second installation position (13) are respectively formed on two sides of the coil installation cavity (11), and the bottoms of the first installation position (12) and the second installation position (13) are respectively provided with a first abdicating notch (14) and a second abdicating notch (15) which can abdicating the lower ends of the first pin (42) and the second pin (52), the first pin module (4) is embedded and fixed in the first installation position (12) of the shell (1) through a first positioning embedded block (41), the lower end of the first pin (42) penetrates out of the shell (1) downwards through the corresponding first abdicating notch (14), the second pin module (5) is embedded and fixed in the second installation position (13) of the shell (1) through a second positioning embedded block (51), and the lower end of the second pin (52) penetrates out of the shell (1) downwards through the corresponding second abdicating notch (15).

2. The GFCI coil assembly of claim 1, wherein: the neutral magnetic ring coil (2) and the electric leakage detection magnetic ring coil (3) are connected together in an adhesive mode, and an insulating sheet (6) is further arranged between the neutral magnetic ring coil (2) and the electric leakage detection magnetic ring coil (3).

3. The GFCI coil assembly of claim 2, wherein: the outer side of the electric leakage detection magnetic ring coil (3) is connected with a shielding sheet (7) for shielding external signals through gluing.

4. The GFCI coil assembly of any one of claims 1 to 3, wherein: the first installation position (12) comprises a first embedding groove matched with the first positioning embedding block (41) of the first pin module (4) and a first yielding space capable of yielding the upper end of each first pin (42), the first pin module (4) is fixed in the first installation position (12) of the shell (1) through the inserting and embedding of the first positioning embedding block (41) and the first embedding groove, and the upper end of each first pin (42) is welded with the neutral magnetic ring coil (2) to form electric connection; the second installation position (13) comprises a second embedding groove matched with a second positioning embedding block (51) of the second pin module (5) and a second yielding space capable of yielding the upper end of each second pin (52), the second pin module (5) is fixed in the second installation position (13) of the shell (1) through the inserting and embedding of the second positioning embedding block (51) and the second embedding groove, and the upper end of each second pin (52) is welded with the electric leakage detection magnetic ring coil (3) to form electric connection.

5. The GFCI coil assembly of claim 4, wherein: silica gel capable of improving the embedding installation stability of the first pin module (4) and the second pin module (5) and the insulation and oxidation resistance of each welding part is filled in the first installation position (12) and the second installation position (13).