Electrical device

Abstract

The embodiment of the utility model provides electrical equipment. The electrical device includes: a current transformer including a through hole; the cable penetrates through the through hole; the electrical connection bar penetrates through the through hole in the first direction and comprises a special-shaped section located in the through hole, the special-shaped section comprises a containing groove, and a part of the cable is located in the containing groove.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the technical field of electrical equipment, and more particularly, to an electrical equipment. Background Art

[0002] Residual current operated devices (RCDs) are used in low voltage power distribution systems and are mainly used to prevent direct contact and indirect contact electric shock accidents, as well as electrical fires and electrical equipment damage accidents. The paired electrical connectors in the main circuit of the residual current operated device need to pass through the current transformer.

[0003] With the development of miniaturization and lightweight of electrical equipment, the volume requirements of current transformers are becoming more and more stringent, but the current carried by the paired electrical connectors has not decreased, so the cross-sectional area of ​​the paired electrical connectors cannot be reduced, resulting in the paired electrical connectors being unable to pass through the current transformer due to interference with each other. Utility Model Content

[0004] An object of the present disclosure is to provide an electrical device to at least partially solve the above problems.

[0005] In a first aspect of the present disclosure, an electrical device is provided, comprising: a current transformer, comprising a through-hole; a cable, passing through the through-hole; and an electrical connection row, passing through the through-hole along a first direction and comprising a special-shaped segment located in the through-hole, the special-shaped segment comprising a receiving groove, and a portion of the cable is located in the receiving groove.

[0006] According to an embodiment of the present disclosure, since the special-shaped section located in the perforation includes a receiving groove and a portion of the cable can be located in the receiving groove, interference between the cable and the electrical connection bar is avoided, so that the cable and the electrical connection bar can pass through the current transformer at the same time.

[0007] In some embodiments, the portion of the cable and an inner surface of the receiving groove are spaced apart from each other, or the portion of the cable contacts the inner surface of the receiving groove.

[0008] In some embodiments, the special-shaped segment includes a middle portion and a pair of connecting portions, one of the connecting portions of the pair is disposed on one end of the middle portion, and the other of the connecting portions of the pair is disposed on the other opposite end of the middle portion.

[0009] In some embodiments, the accommodating groove includes a first groove body and a pair of second groove bodies connected to the first groove body, the first groove body is arranged in the middle part, and the pair of second groove bodies are respectively arranged in corresponding connecting parts.

[0010] In some embodiments, the middle portion includes a first cross section taken along a plane perpendicular to the first direction, the first cross section is arc-shaped, and the middle portion is in contact with the through hole.

[0011] In some embodiments, the electrical connection row further includes a pair of regular segments, each of the pair of regular segments is connected to a corresponding connection portion, and the cable and the pair of regular segments are spaced apart from each other.

[0012] In some embodiments, the pair of regular segments each includes a second cross-section taken along a plane perpendicular to the first direction, and an area of ​​the second cross-section is equal to an area of ​​the first cross-section.

[0013] In some embodiments, the electrical connection row further includes a pair of insulating layers, each of the pair of insulating layers being disposed around a side surface of a corresponding regular segment.

[0014] In some embodiments, the electrical device further includes insulating glue, the length of the special-shaped segment is smaller than the length of the through hole, and the insulating glue fills the through hole and wraps a portion of the cable and a portion of the electrical connection row.

[0015] In some embodiments, the electrical device is a residual current operated protector.

[0016] It should be understood that the content described in this section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0018] Figure 1 A schematic diagram of the structure of an electrical device according to some embodiments of the present disclosure is shown, wherein the insulating glue is not shown;

[0019] Figure 2 A schematic diagram of the structure of an electrical connection bank according to some embodiments of the present disclosure is shown;

[0020] Figure 3 Shows Figure 1 A cross-sectional view of the electrical apparatus shown;

[0021] Figure 4 shows a cross-sectional view of a regular segment according to some embodiments of the present disclosure;

[0022] Figure 5A schematic structural diagram of a current transformer according to some embodiments of the present disclosure is shown;

[0023] Figure 6 A schematic structural diagram of an electrical device according to some embodiments of the present disclosure is shown.

[0024] Description of reference numerals:

[0025] 100 for electrical equipment;

[0026] 1 is a current transformer, 11 is a perforation;

[0027] 2 is the cable;

[0028] 3 is an electrical connection row, 31 is a special-shaped segment, 311 is a receiving groove, 312 is a middle portion, 3121 is a first groove body, 3122 is a first cross section, 313 is a connecting portion, 3131 is a second groove body, 32 is a regular segment, 321 is a second cross section, and 33 is an insulating layer;

[0029] 4 is insulating glue;

[0030] X is the first direction. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0033] As described above, with the development of miniaturization and lightweight of electrical equipment, the volume requirements of current transformers are becoming more and more stringent, but the current carried by the paired electrical connectors has not decreased, so that the cross-sectional area of ​​the paired electrical connectors cannot be reduced, resulting in the paired electrical connectors being unable to pass through the current transformer due to interference with each other.

[0034] For example, a conventional residual current action protector passes through a current transformer through two cables or one cable and an electrical connection bar, but the two cables interfere with each other, or one cable and an electrical connection bar interfere with each other. Or the current transformer is passed through two electrical connection bars, and one of the electrical connection bars needs to be bent. Since the bent electrical connection bar cannot be inserted into the current transformer, the bent electrical connection bar needs to be divided into two sections and welded at the bend, thereby increasing the difficulty of industrialization.

[0035] The embodiment of the present disclosure provides an electrical device 100 to at least partially solve the above problems. Figures 1 to 6 The principles of the present disclosure are described. Figure 1 FIG. 1 shows a schematic diagram of the structure of an electrical device 100 according to some embodiments of the present disclosure, wherein the insulating glue 4 is not shown. Figure 1 As shown, the electrical device 100 described herein generally includes a current transformer 1 , a cable 2 , an electrical connection bar 3 and an insulating adhesive 4 .

[0036] refer to Figure 1 In some embodiments, the current transformer 1 includes a through hole 11. The cable 2 and the electrical connection bar 3 can be used as part of the main circuit. The cable 2 passes through the through hole 11. The electrical connection bar 3 passes through the through hole 11 along the first direction X.

[0037] Figure 2 A schematic structural diagram of an electrical connection bar 3 according to some embodiments of the present disclosure is shown. Figure 3 Shows Figure 1 A cross-sectional view of the electrical device 100 is shown. Figures 1 to 3 As shown, in some embodiments, the electrical connection bar 3 includes a shaped segment 31, and the shaped segment 31 is located in the through hole 11. The shaped segment 31 includes a receiving groove 311, and a part of the cable 2 is located in the receiving groove 311.

[0038] According to the embodiment of the present disclosure, since the special-shaped segment 31 located in the perforation 11 includes a receiving groove 311, and a part of the cable 2 can be located in the receiving groove 311, interference between the cable 2 and the electrical connection bar 3 is avoided, so that the cable 2 and the electrical connection bar 3 can simultaneously pass through the current transformer 1. In addition, since the electrical device 100 of the embodiment of the present disclosure does not adopt the solution of two electrical connection bars 3 passing through the current transformer 1, therefore, in the embodiment of the present disclosure, there is no need to weld the electrical connection bar 3, thereby reducing the difficulty of industrialization.

[0039] Continue to refer Figures 1 to 3In some embodiments, a portion of the cable 2 may be spaced apart from the inner surface of the receiving groove 311. Of course, in other embodiments, a portion of the cable 2 may also contact the inner surface of the receiving groove 311. Since the outer side of the cable 2 is wrapped with an insulating skin, even if the cable 2 contacts the electrical connection bar 3, the cable 2 and the electrical connection bar 3 will not be conductive. It should be noted that the contact here means that there is no force between the cable 2 and the electrical connection bar 3.

[0040] Continue to refer Figure 1 to Figure 2 In some embodiments, the electrical connection bar 3 further includes a pair of regular segments 32. One of the regular segments 32 is connected to one end of the special-shaped segment 31, and the other regular segment 32 is connected to the other end of the special-shaped segment 31. It can be understood that the electrical connection bar 3 in this embodiment can be stamped and formed by a straight copper bar, and the special-shaped segment 31 is formed thereby.

[0041] Furthermore, the cable 2 can be spaced apart from the paired regular segments 32 to avoid interference between the cable 2 and the regular segments 32. Of course, the cable 2 can also contact the paired regular segments 32 to avoid interference between the cable 2 and the regular segments 32.

[0042] Continue to refer Figure 2 In some embodiments, the special-shaped segment 31 may include a middle portion 312 and a pair of connecting portions 313. One connecting portion 313 of the pair of connecting portions 313 is disposed on one end of the middle portion 312, and the other connecting portion 313 of the pair of connecting portions 313 is disposed on the other opposite end of the middle portion 312. The pair of regular segments 32 are each connected to a corresponding connecting portion 313.

[0043] Continue to refer Figure 2 In some embodiments, the receiving groove 311 may include a first groove body 3121 and a pair of second groove bodies 3131. The pair of second groove bodies 3131 may be connected to the first groove body 3121. The first groove body 3121 is disposed in the middle portion 312, and the pair of second groove bodies 3131 are each disposed in a corresponding connecting portion 313.

[0044] Continue to refer Figures 2 to 3 In some embodiments, the middle portion 312 includes a first cross section 3122 taken along a plane perpendicular to the first direction X. The first cross section 3122 may be arc-shaped, and at least a portion of the middle portion 312 may be in contact with the inner surface of the through hole 11 .

[0045] Correspondingly, Figure 4 2 shows a cross-sectional view of a regular segment 32 according to some embodiments of the present disclosure. Figure 4As shown, each of the paired regular segments 32 includes a second cross section 321 cut along a plane perpendicular to the first direction X. The second cross section 321 may be rectangular.

[0046] It can be understood that, since the electrical connection bar 3 in this embodiment can be formed by stamping a straight copper bar, the area of ​​the second cross section 321 is equal to the area of ​​the first cross section 3122. Of course, the connecting portion 313 may include a third cross section (not shown in the figure) taken along a plane perpendicular to the first direction X, and the area of ​​the second cross section 321 is equal to the area of ​​the third cross section. For example, the cross-sectional area may be 10 mm 2 .

[0047] Return to reference Figure 2 In some embodiments, the electrical connection bar 3 further includes a pair of insulating layers 33. The pair of insulating layers 33 are each disposed around the side of the corresponding regular segment 32 to provide a protective effect. Since the special-shaped segment 31 is formed by stamping, no insulating layer 33 is disposed on the side of the special-shaped segment 31.

[0048] Figure 5 FIG. 1 shows a schematic diagram of the structure of a current transformer 1 according to some embodiments of the present disclosure. Figure 1 and Figure 5 As shown, the aperture at the middle position of the through hole 11 is smaller than the aperture at the two end positions of the through hole 11. The special-shaped segment 31 can be located in the middle position of the through hole 11. It can be understood that since the aperture at the middle position of the through hole 11 is smaller, the special-shaped segment 31 is located in the middle position of the through hole 11, which can avoid the interference problem between the cable 2 and the electrical connection row 3 at the small aperture. In addition, since the aperture at the two end positions of the through hole 11 is larger, the cable 2 and the electrical connection row 3 will not interfere with each other.

[0049] Figure 6 FIG. 1 shows a schematic diagram of the structure of an electrical device 100 according to some embodiments of the present disclosure. Figure 1 , Figure 5 as well as Figure 6 As shown, in some embodiments, the through hole 11 may be filled with insulating glue 4. The insulating glue 4 wraps a portion of the cable 2 and fixes the cable 2. The insulating glue 4 wraps a portion of the electrical connection bar 3 and fixes the electrical connection bar 3.

[0050] To ensure that the insulating glue 4 completely wraps the shaped segment 31, in some embodiments, the length of the shaped segment 31 may be less than the length of the through hole 11, and the length of the shaped segment 31 may be equal to the length of the smaller hole. In other embodiments, the length of the shaped segment 31 may be less than the length of the through hole 11, and the length of the shaped segment 31 may be greater than the length of the smaller hole.

[0051] The anti-interference design according to the embodiment of the present disclosure can be applied to various electrical devices 100, such as residual current operated protectors, to at least partially solve the above problems. It should be understood that the anti-interference design according to the embodiment of the present disclosure can also be applied to other electrical components, and the embodiment of the present disclosure is not limited to this.

[0052] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electrical device (100), characterized in that: The electrical device (100) comprises: A current transformer (1), comprising a perforation (11); A cable (2) passes through the through hole (11); and The electrical connection row (3) passes through the through hole (11) along a first direction (X) and comprises a special-shaped segment (31) located in the through hole (11), the special-shaped segment (31) comprises a receiving groove (311), and a part of the cable (2) is located in the receiving groove (311).

2. The electrical device (100) according to claim 1, characterized in that: The portion of the cable (2) is spaced apart from the inner surface of the receiving groove (311), or The portion of the cable (2) is in contact with the inner surface of the accommodating groove (311).

3. The electrical device (100) according to claim 1, characterized in that: The special-shaped section (31) includes a middle portion (312) and a pair of connecting portions (313), one connecting portion (313) of the pair of connecting portions (313) is arranged on one end of the middle portion (312), and the other connecting portion (313) of the pair of connecting portions (313) is arranged on the other end opposite to the middle portion (312).

4. The electrical device (100) according to claim 3, characterized in that: The accommodating groove (311) comprises a first groove body (3121) and a pair of second groove bodies (3131) connected to the first groove body (3121), wherein the first groove body (3121) is arranged in the middle part (312), and the pair of second groove bodies (3131) are respectively arranged in the corresponding connecting part (313).

5. The electrical device (100) according to claim 4, characterized in that: The middle portion (312) includes a first cross section (3122) cut along a plane perpendicular to the first direction (X), the first cross section (3122) is arc-shaped, and the middle portion (312) is in contact with the through hole (11).

6. The electrical device (100) according to claim 5, characterized in that: The electrical connection row (3) further comprises a pair of regular segments (32), each of the pair of regular segments (32) being connected to a corresponding connection portion (313), and the cable (2) and the pair of regular segments (32) being spaced apart from each other.

7. The electrical device (100) according to claim 6, characterized in that: The paired regular segments (32) each include a second cross section (321) taken along a plane perpendicular to the first direction (X), and the area of ​​the second cross section (321) is equal to the area of ​​the first cross section (3122).

8. The electrical device (100) according to claim 6, characterized in that: The electrical connection row (3) further comprises a pair of insulating layers (33), each of which is arranged around a side surface of a corresponding regular segment (32).

9. The electrical device (100) according to claim 1, characterized in that: The electrical device (100) further comprises insulating glue (4), the length of the special-shaped segment (31) is smaller than the length of the through hole (11), and the insulating glue (4) is filled in the through hole (11) and wraps a portion of the cable (2) and a portion of the electrical connection row (3).

10. The electrical device (100) according to claim 1, characterized in that The electrical device (100) is a residual current operated protector.

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