TWM606550U - Residual current protector with electromagnetic shielding structure - Google Patents

Abstract

This creation is a residual current protector with an electromagnetic shielding structure, including an insulating base, an electromagnetic induction module, a leakage current detection module, and an electromagnetic shielding structure. The insulating base includes a base and a cover plate covering the base. The electromagnetic induction module is arranged on one side of the base, and the electromagnetic induction module includes a core base and an iron core arranged in the core base. The leakage current detection module is arranged on the other side of the base, and the leakage current detection module includes a detection circuit arranged on the circuit board group by the circuit board group and a lead frame electrically connected to the circuit board group. The electromagnetic shielding structure includes a metal shielding body, and the electromagnetic shielding structure is integrated in the base and shields the leakage current detection module; thereby, the residual current protector can achieve the effect of preventing electromagnetic wave radio frequency interference.

Description

Residual current protector with electromagnetic shielding structure

This creation is about residual current protection devices, especially a residual current protection device with electromagnetic shielding structure.

Residual Current Device (RCD) is a ground fault current protection device. When the residual current exceeds the reference value, the main circuit contact will be disconnected to disconnect the protected electrical appliance or the device that sends out an alarm signal. An effective protective measure to prevent personal electric shock, electrical fire or electrical equipment damage.

However, the residual current protector will radiate electromagnetic waves to the surrounding due to changes in the electromagnetic field during operation, which will then cause radio frequency interference (RFI, Radio Frequency Interference) problems. In addition, when the radiated magnetic field is strong, it may exceed Restriction standards, this will affect the operation of the device, the surrounding electronic equipment and even the human body.

In view of this, the creator has focused on the above-mentioned existing technology, specially researched and cooperated with the application of academic theory, and tried his best to solve the above-mentioned problems, which became the goal of the creator's improvement.

One purpose of this creation is to provide a residual current protector with electromagnetic shielding structure, thereby achieving the effect of preventing electromagnetic interference.

In order to achieve the above purpose, this creation is a residual current protector with an electromagnetic shielding structure, including an insulating base, an electromagnetic induction module, a leakage current detection module, and an electromagnetic shielding structure. The insulating base includes a base and a cover plate covering the base. The electromagnetic induction module is arranged on one side of the base, and the electromagnetic induction module includes a core base and an iron core arranged in the core base. The leakage current detection module is arranged on the other side of the base, and the leakage current detection module includes a detection circuit of the circuit board group arranged on the circuit board group and a lead frame electrically connected to the circuit board group. The electromagnetic shielding structure includes a metal shielding body, and the electromagnetic shielding structure is integrated in the base and shields the leakage current detection module.

Compared with the prior art, the residual current protector of this creation is equipped with an electromagnetic shielding structure, in which the electromagnetic shielding structure is integrated in the base and covers the leakage current detection module, which detects the leakage current through the metal shield The module is shielded to prevent the residual current protector from affecting the operation of other external electronic devices and human health during operation, thereby increasing the practicality of this creation.

The detailed description and technical content of this creation are described below with the drawings. However, the accompanying drawings are only for reference and explanation, and are not used to limit the creation.

Please refer to Fig. 1 and Fig. 2, which are the three-dimensional schematic diagrams of the two sides of the residual current protector with electromagnetic shielding structure of this creation. The residual current protector 1 with electromagnetic shielding structure of the present invention includes an insulating base body 10, an electromagnetic induction module 20, a leakage current detection module 30, and an electromagnetic shielding structure 40. The electromagnetic induction module 20 and the leakage current detection module 30 are arranged in the insulating base 10, and the electromagnetic shielding structure 40 shields the leakage current detection module 30 to prevent electromagnetic wave radio frequency interference. Effect. The structure of the residual current protector 1 is described in more detail as follows.

Please also refer to FIGS. 3 to 5, which are the three-dimensional exploded schematic diagram of the residual current protector with the electromagnetic shielding structure, the three-dimensional exploded diagram of the electromagnetic induction module, and the three-dimensional exploded diagram of the leakage current detection module. The insulating base 10 includes a base 11 and a cover 12 covering the base 11. In an embodiment of the present creation, the base 11 includes a ring cylinder 111 and a rectangular body 112 extending from the ring cylinder 111. The interiors of the ring cylinder 111 and the rectangular body 112 are connected to each other, and the cover plate 12 is It is combined and fixed corresponding to the shape of the base 11.

The electromagnetic induction module 20 is arranged on one side of the base 11. The electromagnetic induction module 20 includes a core base 21 and an iron core 22 arranged in the core base 21. In this embodiment, the core holder 21 and the iron core 22 are arranged in the ring cylinder 111 and are arranged in a ring shape corresponding to the ring cylinder 111.

Specifically, the core 21 is a metal shell for shielding the external magnetic field. In addition, the core seat 21 includes a lower core seat 211 and an upper core seat 212 that are relatively covered. The lower core seat 211 and the upper core seat 212 are respectively formed with a positioning ring 2120. The iron core 22 arranged in a ring shape is restricted by the positioning ring sheet 2120 and positioned in the core seat 21.

Furthermore, the leakage current detection module 30 is arranged on the other side of the base 11. The leakage current detection module 30 includes a circuit board group 31, a detection circuit 32 disposed on the circuit board group 31, and a lead frame 33 electrically connected to the circuit board group 31.

In an embodiment of the present invention, the circuit board group 31 includes a first circuit board 311 and a second circuit board 312. In addition, one end of the lead frame 33 is disposed on the iron core 22 and the other end is connected to the first circuit board 311 and the second circuit board 312.

In addition, the electromagnetic shielding structure 40 is integrated in the base 11 and covers the leakage current detection module 30.

Please refer to Figures 6 to 8, which are cross-sectional views of the residual current protector with electromagnetic shielding structure created by this author. As shown in the figure, in an embodiment of the present invention, the electromagnetic shielding structure 40 is a metal shielding body 41, and the electromagnetic shielding structure 40 further includes an insulating sheet 42. The insulating sheet 42 covers the first circuit board 311 and the second circuit board 312, and the metal shield 41 covers the outer side of the insulating sheet 42. Accordingly, the insulating sheet 42 can be used to isolate the metal shielding body 41 and the leakage current detection module 30, so as to prevent the metal shielding body 41 from contacting the leakage current detection module 30 and causing a short circuit, and the metal shielding body 41 can shield the leakage current detection module 30, thereby achieving the effect of preventing electromagnetic wave radio frequency interference.

Please continue to refer to FIG. 9, which is a three-dimensional exploded schematic diagram of another embodiment of the residual current protector with electromagnetic shielding structure created by this invention. In this embodiment, the residual current protector 1a includes an insulating base 10a, an electromagnetic induction module 20a, a leakage current detection module 30a, and an electromagnetic shielding structure 40a, and the electromagnetic shielding structure 40a includes a metal shield体41a.

In more detail, the metal shielding body 41a is a metal foil, preferably copper foil; in addition, since the metal foil is flexible, the metal shielding body 41a is attached to the base 11a and the upper cover 12a The inner wall surface of the insulating seat body 10a is formed. Thereby, when the upper cover 12a is combined with the base 11a, the electromagnetic shielding structure 40a can form a shielding space and cover the leakage current detection module 30a. In addition, it should be noted that the metal shield 41a can only cover the leakage current detection module 30a, that is, the electromagnetic shielding structure 40a can only be attached to the base 11a and the upper cover 12a to accommodate Place the rectangular part of the leakage current detection module 30a. In actual implementation, the metal shielding body 41a can be attached to the inner wall surface of the upper cover 12a and the base 11a as a whole.

Please also refer to FIG. 10, which is a schematic cross-sectional view of another embodiment of the residual current protector with electromagnetic shielding structure created by this invention. In this embodiment, the residual current protector 1b includes an insulating base 10b, an electromagnetic induction module (not shown), a leakage current detection module 30b, and an electromagnetic shielding structure 40b, and the electromagnetic shielding structure 40b It includes a metal shield 41b.

Specifically, the metal shield 41b is a metal shell covering the first circuit board 311b and the second circuit board 312b. Accordingly, the metal shield 41b can shield the leakage current detection module 30b, thereby achieving the effect of preventing electromagnetic wave radio frequency interference.

The above descriptions are only the preferred embodiments of this creation, and are not used to define the patent scope of this creation. Other equivalent changes using the patent spirit of this creation should all belong to the patent scope of this creation.

1, 1a, 1b: residual current protector

10, 10a, 10b: insulating seat body

11, 11a: base

111: Ring tube

112: rectangular body

12, 12a: cover

20, 20a: electromagnetic induction module

21: core seat

211: Lower core seat

212: Upper core seat

2120: positioning ring

22: iron core

30, 30a, 30b: Leakage current detection module

31: Circuit board group

311, 311b: the first circuit board

312, 312b: second circuit board

32: detect line

33: Lead frame

40, 40a, 40b: electromagnetic shielding structure

41, 41a, 41b: Metal shield

42: Insulation sheet

Fig. 1 and Fig. 2 are the three-dimensional appearance diagrams of the residual current protector with electromagnetic shielding structure of this invention in two directions.

Figure 3 is a three-dimensional exploded schematic diagram of the residual current protector with electromagnetic shielding structure of this invention.

Figure 4 is a three-dimensional exploded schematic diagram of the electromagnetic induction module of this creation.

Figure 5 is a three-dimensional exploded schematic diagram of the leakage current detection module created by this invention.

Figures 6 to 8 are cross-sectional views of a residual current protector with electromagnetic shielding structure created by this invention.

FIG. 9 is a three-dimensional exploded schematic diagram of another embodiment of the residual current protector with electromagnetic shielding structure created by this invention.

Fig. 10 is a schematic cross-sectional view of another embodiment of the residual current protector with electromagnetic shielding structure created by this invention.

1: Residual current protector

10: Insulating seat body

11: Base

111: Ring tube

112: rectangular body

12: Cover

20: Electromagnetic induction module

30: Leakage current detection module

40: Electromagnetic shielding structure

Claims (9)

A residual current protector with electromagnetic shielding structure, including: An insulating base body, including a base and a cover plate covering the base; An electromagnetic induction module arranged on one side of the base; the electromagnetic induction module includes a core base and an iron core arranged in the core base; A leakage current detection module is arranged on the other side of the base. The leakage current detection module includes a circuit board group, a detection circuit arranged on the circuit board group and electrically connected to the circuit board group Of a lead frame; and An electromagnetic shielding structure includes a metal shielding body, and the electromagnetic shielding structure is integrated in the base and shields the leakage current detection module. The residual current protector with an electromagnetic shielding structure according to claim 1, wherein the base includes a ring tube and a rectangular body extending from the ring tube, the interior of the ring tube and the rectangular body are communicated with each other, and the cover The board is combined and fixed corresponding to the shape of the base. The residual current protector with an electromagnetic shielding structure according to claim 2, wherein the core base and the iron core are arranged in the ring cylinder and the ring cylinder is arranged in a ring shape. The residual current protector with electromagnetic shielding structure according to claim 2, wherein the core base includes a lower core base and an upper core base that are relatively closed, and the lower core base and the upper core base are respectively formed with a positioning ring piece . The residual current protector with electromagnetic shielding structure according to claim 2, wherein the core base is a metal shell base. The residual current protector with electromagnetic shielding structure according to claim 1, wherein the circuit board group includes a first circuit board and a second circuit board, and one end of the lead frame is arranged on the iron core and the other end Connect the first circuit board and the second circuit board. The residual current protector with an electromagnetic shielding structure according to claim 6, wherein the electromagnetic shielding structure further includes an insulating sheet, the insulating sheet covering the first circuit board and the second circuit board, and the metal shielding system Wrapped on the outside of the insulating sheet. The residual current protector with electromagnetic shielding structure according to claim 2, wherein the metal shielding system is attached to the inner wall surface of the rectangular body. The residual current protector with an electromagnetic shielding structure according to claim 2, wherein the metal shielding system is a metal shell, and the metal shell covers the first circuit board and the second circuit board.

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