PCB insertion core and electrical plugging device

Abstract

The utility model provides a PCB insertion core, comprising a power supply wiring part used for connecting an external power supply loop or a current loop, and at least one insertion part. The power supply wiring part comprises a plurality of power supply terminals; the plugging part comprises a plurality of female terminals, and the plugging part is a meter plugging part used for connecting an external meter or a terminal plugging part used for connecting an external terminal; and the PCB is used for electrically connecting the power supply terminal and the female terminal. The utility model also provides a plugging device comprising the PCB insertion core. The PCB insertion core and the insertion device have the advantages of being flexible in wiring, reliable in connection and exquisite in design, and can meet various electrical connection requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a PCB plug core and an electrical plug-in device. Background Art

[0002] Electrical plug-in transposition is widely used in power grid systems, and can complete various functions such as intelligent terminal access or lossless meter replacement. For example, in power grid systems, secondary circuits with current and voltage transformers are usually used to indirectly meter or measure parameters such as current, voltage, power, phase, and frequency in the main circuit. In the energized state, the current loop of the secondary circuit cannot be open, otherwise the open circuit of the secondary coil of the current transformer will generate high voltage, which may damage the insulation of the secondary winding and the terminal, and will seriously endanger personal safety. In this case, how to lead out the current and voltage in the secondary circuit to connect to the intelligent terminal for electrical parameter measurement without disconnecting the secondary circuit is a difficult problem. The existing operation method requires wiring operations for multiple current and voltage circuits, and the operation process is complicated and the operation risk is relatively high.

[0003] Electrical plug-in devices can solve the above-mentioned operation process and risk problems, but the internal electrical connection of traditional electrical plug-in devices is realized through wires or guide rods. When there are many circuits, for example, when more than ten or more circuits need to be arranged, the wiring becomes more complicated, and the crossing and insulation between the wires are also difficult to handle, which will also increase the size and cost of the plug-in device. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a PCB (Printed Circuit Board) plug and an electrical plug device to improve the flexibility of wiring of the electrical plug device. The following technical solutions are specifically adopted to solve the problem:

[0005] The first purpose of the utility model is to provide a PCB plug-in, comprising a power connection part for connecting an external power circuit or a current circuit, and at least one plug-in part; the power connection part comprises a plurality of power terminals; the plug-in part comprises a plurality of female terminals, and the plug-in part is a meter plug-in part for connecting an external meter, or a terminal plug-in part for connecting an external terminal; and also comprises a PCB for electrical connection between the power terminal and the female terminal.

[0006] Furthermore, the PCB is provided with a power terminal through hole for installing the power terminal, and a female terminal through hole for installing the female terminal; and a plurality of small through holes are provided around the female terminal through hole.

[0007] Furthermore, the PCB adopts a multilayer board, in which an electrical circuit is arranged for connecting the pads of the power terminal through-holes with the pads of the mother terminal through-holes; the electrical circuit includes a plurality of voltage loops and a plurality of current loops.

[0008] Furthermore, the power terminal is provided with a wiring hole for wiring along the axial direction, and a wire tightening hole perpendicular to the wiring hole is also provided for fixing the wire in the wiring hole.

[0009] The second object of the utility model is to provide an electrical plug device, comprising the above-mentioned PCB plug core, and also comprising a plug adapted to the plug-in portion, wherein the plug comprises a male core, and a plurality of male terminals arranged in the male core and adapted to the female terminals.

[0010] Furthermore, the plug also includes an upper cover, a top corner of which is provided with a gland for the wire to pass through the plug.

[0011] Furthermore, two meter plug-in parts are provided, and an interlocking structure for prohibiting two plugs on the plug-in parts from being pulled out simultaneously is provided between the two meter plug-in parts.

[0012] Furthermore, two terminal plug-in parts are provided, and short-circuit contact pieces are provided between some of the female terminals.

[0013] Furthermore, the plug also includes an upper cover, a top corner of which is provided with a gland for the wire to pass through the plug.

[0014] Beneficial effects of the utility model:

[0015] 1) The plug-in device uses PCB wiring. PCB is easier to achieve multi-layer wiring and can meet the needs of multiple circuits.

[0016] 2) Using PCB inserts, the PCB thickness and size of the electrical connection are very thin.

[0017] 3) When the electrical connection relationship needs to be changed, you only need to replace the PCB, which is much more convenient than traditional wires or guide rods.

[0018] 4) The plug-in device using PCB plug-in core is provided with two meter plug-in parts, and an interlocking structure is provided between them to ensure uninterrupted connection of the electrical equipment.

[0019] 5) The plug-in device using the PCB plug-in core is provided with two terminal plug-in parts, and a short-circuit contact piece is provided between the female terminals of the terminal plug-in parts to meet various connection requirements.

[0020] The utility model provides a PCB plug core and an electrical plug-in device, which have the characteristics of flexible wiring, reliable connection and exquisite design, and can meet various electrical connection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a PCB insert according to an embodiment of the utility model;

[0022] Figure 2 This is a PCB appearance diagram of the PCB insert of the embodiment of the utility model;

[0023] Figure 3 This is a PCB electrical connection diagram of the PCB insert of the embodiment of the utility model;

[0024] Figure 4 This is a diagram of the base of the plug-in device of the utility model embodiment;

[0025] Figure 5 This is an internal diagram of the plug of the plug-in device of the embodiment of the utility model;

[0026] Figure 6 This is an external diagram of the plug of the plug-in device of the embodiment of the utility model;

[0027] Figure 7 This is a three-dimensional diagram of the plug-in device according to an embodiment of the utility model.

[0028] Figure markings: 1-power connection part; 2-PCB; 3-plug-in part; 4-plug; 11-power terminal; 12-cover plate; 15-power terminal through hole; 16-female terminal through hole; 31-meter plug-in part; 32-terminal plug-in part; 33-female terminal; 34-short-circuit contact piece; 41-upper cover; 42-male core; 43-male terminal; 44-cable gland; 46-interlocking structure; 51-base; 52-enclosure. DETAILED DESCRIPTION

[0029] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0030] The utility model embodiment provides a PCB insert, such as Figure 1 As shown, it includes a power connection part 1 and four plug-in parts 3. The power connection part 1 is used to connect an external power circuit or a current circuit, and includes ten power terminals 11, which can support a three-phase circuit, with three circuits per phase, including a voltage circuit and two current circuits. Each plug-in part 3 includes ten female terminals 33. The power terminal 11 and the female terminal 33 are electrically connected through a PCB. The power terminal 11 is provided with a wiring hole for wiring along the axial direction, and a tightening hole perpendicular to the wiring hole is also provided for fixing the wire in the wiring hole.

[0031] PCB appearance Figure 2As shown, a power terminal through hole 15 for mounting the power terminal 11 and a female terminal through hole 16 for mounting the female terminal 33 are provided on the PCB. A plurality of small through holes are provided around the female terminal through hole 16. The small through holes can be arranged in a circle outside the female terminal through hole 16 and evenly spaced, which can be used to strengthen the electrical connection. The PCB adopts a multilayer board, and the pads of the power terminal through hole 15 and the pads of the female terminal through hole 16 are connected by internal wiring, thereby realizing the electrical connection between the power terminal 11 and the female terminal 33.

[0032] In the embodiment of the utility model, there are 10 power terminal through holes and 40 female terminal through holes on the PCB. In the traditional plug-in device, the electrical connection between the power terminal and the female terminal is achieved through a wire or a guide rod. However, when the number of power terminals and female terminals is large, the traditional method is more troublesome and not flexible enough. The PCB is used in the embodiment of the utility model, which can conveniently achieve complex loop connections.

[0033] PCB electrical connections such as Figure 3 As shown, ten power terminal through holes 15 connect phase A (Ua, Ia1, Ia2), phase B (Ub, Ib1, Ib2), phase C (Uc, Ic1, Ic2) and neutral line (Un), where Ua, Ub, Uc and Un are four voltage circuits, and Ia1, Ia2, Ib1, Ib2, Ic1 and Ic2 are six current circuits. Each plug-in part 3 has ten female terminal through holes 16, where four female terminal through holes 16 connect Ua, Ub, Uc and Un to form four voltage circuits, and six female terminal through holes 16 connect to current circuits.

[0034] An electrical plug device according to an embodiment of the present utility model comprises the above-mentioned PCB plug core and also comprises a base 51 for insulation. Figure 4 As shown. The base 51 protects the electrical parts of the printed circuit board 2, the power terminal 11 and the female terminal 33. The base 51 is provided with a fence 52 for each plug-in portion 3. The cover plate 12 on the power connection portion 1 is also used for insulation.

[0035] The electrical plug device of the embodiment of the utility model further includes a plug 4 adapted to the plug portion 3, such as Figure 5 , Figure 6 and Figure 7 The plug 4 includes a male core 42, in which ten male terminals 43 are arranged, and the male terminals are used to adapt to the female terminals 33 of the plug part 3. The plug 4 also includes an upper cover 41, the top corner of which is provided with a gland 44 for the wire to pass through the plug 4.

[0036] The plug-in part 3 of the electrical plug-in device includes two types: 1) a meter plug-in part 31 for connecting an external meter; and 2) a terminal plug-in part 32 for connecting an external terminal.

[0037] The embodiment of the utility model is provided with two meter plug-in parts 31, and an interlocking structure 46 is provided between them. The interlocking structure 46 device is used to prevent the two plugs 4 on the two plug-in parts from being unplugged at the same time. That is, when the second plug 4 is inserted, the first plug 4 can be unplugged, which is used to ensure that the electrical connection device works uninterruptedly.

[0038] The embodiment of the utility model is provided with two terminal plug parts 32, and a short-circuit contact piece 34 is provided between some female terminals 33 of the terminal plug parts for short-circuiting two connected female terminals 33. When short-circuiting is not required, a partition is provided on the plug 4 to separate the short-circuit contact piece 34.

[0039] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A PCB ferrule, characterized in that: The invention comprises a power connection part (1) for connecting an external power supply circuit or a current circuit, and at least one plug-in part (3); the power connection part (1) comprises a plurality of power terminals (11); the plug-in part (3) comprises a plurality of female terminals (33); the plug-in part (3) is a meter plug-in part (31) for connecting an external meter, or a terminal plug-in part (32) for connecting an external terminal; and the invention also comprises a PCB (2) for electrically connecting the power terminals (11) and the female terminals (33).

2. A PCB insert according to claim 1, characterized in that: The PCB (2) is provided with a power terminal through hole (15) for mounting a power terminal (11), and a female terminal through hole (16) for mounting a female terminal (33); a plurality of small through holes are arranged around the female terminal through hole (16).

3. A PCB insert according to claim 2, characterized in that: The PCB adopts a multilayer board, in which an electrical circuit is arranged for connecting the pad of the power terminal through hole (15) with the pad of the mother terminal through hole (16); the electrical circuit includes a plurality of voltage loops and a plurality of current loops.

4. A PCB insert according to any one of claims 1 to 3, characterized in that: The power terminal (11) is provided with a wiring hole for wiring along the axial direction, and a tightening hole perpendicular to the wiring hole for fixing the wire in the wiring hole is also provided.

5. An electrical plug device, characterized in that: It comprises a PCB plug core as claimed in any one of claims 1 to 4, and also comprises a plug (4) adapted to the plug-in portion (3), wherein the plug (4) comprises a male core (42) and a plurality of male terminals (43) arranged in the male core (42) and adapted to the female terminals (33).

6. An electrical plug device according to claim 5, characterized in that: Two meter plug-in parts (31) are provided, and an interlocking structure (46) for preventing two plugs (4) on the plug-in parts from being pulled out simultaneously is provided between the two meter plug-in parts (31).

7. An electrical plug device according to claim 5, characterized in that: Two terminal plug-in parts (32) are provided, and a short-circuit contact piece (34) is provided between some of the female terminals (33).

8. An electrical plug device according to any one of claims 5 to 7, characterized in that: The plug (4) further comprises an upper cover (41), a top corner of which is provided with a gland (44) for allowing a wire to pass through the plug (4).

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