JP3232114U - Power guide pin connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply guide pin connection structure which avoids problems of resistance increase and temperature rise when a power cable for a large current transmits electric power. A power supply guide pin connection structure includes a butt conductor 1, a power cable 3, and a conductive medium 2. One end of the butt conductor includes the connector 11, the other end includes the tubular body 12, and a connection slot 121 is formed at the end of the tubular body. The core wire 31 is exposed at the end of the power cable, the core wire is inserted into the connection slot, a separation space 4 is formed between the end of the core wire and the bottom of the connection slot, and the outer peripheral surface of the core wire contacts the inner surface of the connection slot. .. The conductive medium fills the connection slot, fills the separation space and the periphery of the core wire with the conductive medium to achieve uniform conduction, presses the surface of the tube to reduce the inner diameter of the connection slot, and compresses the core wire to form the connection slot. Exhaust the air inside. [Selection diagram] Fig. 2

Description

The present invention relates to a connection structure, and more particularly to a power guide pin connection structure.

The battery of an electric vehicle is charged by inserting the electric connector, and the electric connector has a standard shape because the socket type electric connector on the electric vehicle and the plug type electric connector on the charging gun of the charging stand are fitted and connected. It comprises 5 butt conductors. Of these, five pins are two AC power pins, one grounding pin, one proximity detection pin, and one control pilot pin.

The butt conductors of the socket type electric connector and the plug type electric connector are connected to the power cable, respectively, and the slot of the butt conductor and the core wire of the power cable are brought into contact with each other by cold compression to conduct the two (butt conductor and power cable) media. Achieve the purpose. A separated space is formed between the slot and the end of the core wire, and when power is transmitted through the two current paths, problems such as an increase in resistance and an increase in temperature occur. Moreover, the impedance of the large-current butt conductor increases rapidly as the length increases, the cross-sectional geometric shape of the fixed structure differs, and the conductivity also differs. The usual solution is to replace it with a highly conductive material. This increased the cost and reduced the strength.

In order to solve the above problems, the present invention provides a power supply guide pin connection structure.

One embodiment of the present invention provides a power guide pin connection structure that includes a butt conductor, a power cable, and a conductive medium. One end of the butt conductor includes a connector, the other end of the butt conductor contains a tube, and the end of the tube is recessed inward to form a connection slot. The core wire is exposed at the end of the power cable, the core wire is inserted into the connection slot, a separation space is formed between the end of the core wire and the bottom of the connection slot, and the outer peripheral surface of the core wire is brought into contact with the inner surface of the connection slot. The conductive medium fills the connection slot, fills the separation space and the periphery of the core wire with the conductive medium, and the end of the core wire becomes a single conductive path to the connector via the conductive medium. The surface of the tube is pressed to reduce the inner diameter of the connection slot, the tube, the core wire and the conductive medium are integrally compressed, and the air inside the connection slot is discharged.

In some embodiments, the conductive medium is a metallic material and the conductive medium is copper powder.

In some embodiments, the conductive medium is a solid, liquid or gaseous medium.

In some embodiments, the surface of the tube is formed with exhaust holes that communicate with the connection slots.

In some embodiments, a tapered slot is formed inside the connection slot and a conductive medium is provided in the tapered slot.

One embodiment of the present invention also provides a power guide pin connection structure that includes a butt conductor, a power cable, and a conductive medium. One end of the butt conductor includes a connector, the other end contains a tubular body, and the end of the tubular body is recessed inward to form a connection slot. Multiple core wires are exposed at the end of the power cable, multiple core wires are inserted into the connection slots, a separation space is formed between the ends of the multiple core wires and the bottom of the connection slot, and the outer peripheral surfaces of some of the core wires are connected. It is in contact with the inner surface of the slot. The conductive medium fills the connection slot, fills the separation space and the gaps around the plurality of core wires, and the ends of the plurality of core wires form a single conductive path to the connector via the conductive medium. The surface of the tube is pressed to reduce the inner diameter of the connection slot, the tube, the plurality of core wires, and the conductive medium are integrally compressed, and the air inside the connection slot is discharged.

One embodiment of the present invention provides a conductive medium for filling the gaps around the core wire and inside the connection slot, fills the conductive medium to achieve uniform conduction, and discharges air in the connection slot. Avoid the problems of increased resistance and temperature when the high current power cable transmits power.

The detailed features and advantages of the present invention will be described in detail in the following embodiments, and the contents thereof can be carried out with a person skilled in the art fully understanding the technical contents of the present invention. Moreover, based on the contents disclosed in the present specification, the scope of claims for utility model registration and the drawings, any person skilled in the art can easily understand the purpose and advantages of the present invention.

It is an external view before fitting of the plug and the socket which concerns on this invention. It is a side view at the time of fitting a plug and a socket which concerns on this invention. It is a side view after fitting of the plug and the socket which concerns on this invention. It is an exploded view of the socket which concerns on this invention. This is a side surface at the time of assembling the socket according to the present invention. It is a side view after assembling the socket which concerns on this invention. It is an exploded view of the plug which concerns on this invention. It is a side view at the time of assembling the plug which concerns on this invention. It is a side view after assembling the plug which concerns on this invention. It is an external view before fitting of the plug and the socket which concerns on this invention.

Referring to FIGS. 1 to 3, the plug and the socket are examples, and the plug and the socket can be fitted and contacted with each other to transmit electric power. In this embodiment, the power guide pin connection structure can be used for sockets or plug types and includes a butt conductor 1, a conductive medium 2, and a power cable 3. Power guide pin connection structures are used in the charging guns of electrical connectors for vehicles (eg, electric vehicles, hybrid vehicles, electric vehicles, etc.), but are not limited to other areas of electrical connectors that transmit power. Can also be used for.

4 to 6 are examples of the socket, FIG. 4 is an exploded view, FIG. 5 is a side view at the time of assembly, and FIG. 6 is a side view after assembly. 7 to 9, FIGS. 7 to 9 are examples of plugs, FIG. 7 is an exploded view, FIG. 8 is a side view at the time of assembly, and FIG. 9 is a side view after assembly.

In this embodiment, one end of the butt conductor 1 includes a connector 11, the other end of the butt conductor 1 includes a tubular body 12, and the end portion of the tubular body 12 is recessed inward to form a connection slot 121.

In this embodiment, the core wire 31 (single core wire 31 as shown in FIG. 10) is exposed at the end of the power cable, the core wire 31 is inserted into the connection slot 121, and the end of the core wire 31 and the bottom of the connection slot 121. The separation space 4 is formed, and the outer peripheral surface of the core wire 31 is brought into contact with the inner surface of the connection slot 121.

In some embodiments, the power cable 3 may include a plurality of cores 31 (multi-cores 31 as shown in FIG. 1), with the plurality of cores 31 inserted into the connection slots 121 and a plurality of conductive media 2. By filling the gap 32 between the core wires 31 and the gap inside the connection slot 121, there is almost no air in the connection slot 121.

Hereinafter, the example of the plurality of core wires 31 (multi-core wires 31) will be described. When the connection slot 121 is filled, the conductive medium 2 has a separation space 4 and a gap around the plurality of core wires 31 (in the case of a single core wire 31, the periphery thereof). Is filled with the conductive medium 2) is filled with the conductive medium 2.

After the surface of the tube body 12 is pressed into a geometric shape, the tube body 12 is compressed to discharge the air inside the connection slot 121, and the core wire 31 and the tube body 12 are uniformly pressurized and fixed. In other words, the surface of the tube 12 (deformed the tube 12) is pressed to reduce the inner diameter of the connection slot 121, the core wire 31 is compressed, and the air inside the connection slot 121 is discharged. The outer peripheral surface of a part of the core wire 31 comes into contact with the inner surface of the connection slot 121.

More specifically, in this embodiment, the conductive medium 2 is a metallic material, and the conductive medium 2 is a solid, liquid (or semi-liquid) or gas medium. Here, the conductive medium 2 is a copper powder, particularly a pure red copper powder. Further, the conductive medium 2 may be a conductive paste.

More specifically, in the present embodiment, the butt conductor 1 is a round pipe, the pipe body 12 is a round pipe provided at the other end of the butt conductor 1, and a connection slot 121 is provided on the surface of the pipe body 12. Fine exhaust holes 122 that communicate with each other are formed.

The conventional exhaust hole 122 is for preventing the plating solution from flowing out and accumulating in the connection slot 121, and the exhaust hole 122 is for discharging air, but the present invention is not limited to this. .. In some embodiments, air can also be expelled through the opening of the connection slot 121 when the structure of the exhaust holes 122 is not provided.

When the conductive medium 2 fills the connection slot 121, the plurality of core wires 31 of the power cable 3 can be inserted into the connection slot 121, and the plurality of core wires 31 are thin rod-shaped and have flexibility. Further, the core wires 31 are arranged concentrically, a gap 32 interval remains between the core wires 31, and air exists when there is a gap 32.

Air is discharged by riveting (cold compression of the tube body 12, each core wire 31 and the conductive medium 2 integrally), and the conductive medium 2 fills the gap 32 between the plurality of core wires 31 and the gap in the connection slot 121. The air in the connection slot 121 and between the plurality of core wires 31 is discharged.

A plurality of conductive materials are joined to form a uniform interface, first, air is discharged, the conductive medium 2 is filled, and then the conductive medium 2 is uniformly pressure-fixed. Here, one end of the power cable 3 is stripped of its outer cover to expose the core wires 31, and the surfaces of the plurality of core wires 31 come into contact with the inner side surfaces of the connection slots 121 to provide a surface area for conductive contact. In order to maximize the cross-sectional area in which the conductors come into contact with each other when viewed from the axial cross section of the power cable 3, an ultrafine conductive medium 2 (pure red copper powder) is filled and between the connection slot 121 and the plurality of core wires 31. The air is discharged to obtain a uniform conductive cross section.

When transmitting a large current conductor, the impedance rises sharply as the temperature rises, and since the air is an insulating and non-conductive medium, multiple different cross sections are blocked, so by discharging the air. It is possible to prevent the formation of a plurality of conductive paths. As shown in the cross-sectional view of FIG. 6, the conventional one is not filled with the conductive medium 2, and there is a separation space 4 (existence of air) between the end portions of the plurality of core wires 31 and the bottom portion of the connection slot 121. At the time of power transmission, the ends of the plurality of core wires 31 and the upper and lower inner wall surfaces of the connection slots 121 form separate conductive paths for diversion, which causes problems of resistance increase and temperature rise.

Here, the conductive medium 2 is buried in the separated space 4 (without air), and during power transmission, the ends of the plurality of core wires 31 come into contact with the conductive medium 2 to transmit the power to the connector 11, and a single conductive path. By forming (that is, the end of the core wire 31 becomes a single conductive path to the connector 11 via the conductive medium), problems of increased resistance and temperature rise due to the divided conductive paths are avoided.

In this embodiment, more specifically, the surface of the tubular body 12 is riveted to a geometry that can be a hexagon (as shown in FIG. 1), a quadrangle, or any other geometry. Further, when the surface of the tube body 12 is pressed to reduce the inner diameter of the connection slot 121 and the surface of the tube body 12 is riveted, the air inside a part of the conductive medium 2 and the connection slot 121 is exhausted to the exhaust hole 122 or the connection slot. It can be discharged from the opening of 121.

More specifically, in this embodiment, the taper slot 1211 is formed inside the connection slot 121, and the conductive medium 2 is provided in the taper slot 1211. Specifically, when the connection slot 121 is bored in the tubular body 12, a conical tapered slot 1211 is formed inside the connection slot 121.

In this embodiment, in order to insert the conductive medium 2 into the connection slot 121 in the process of connecting the power supply terminal, a plurality of core wires 31 at one end of the power cable 3 are inserted into the connection slot 121, and the power cable 3 is twisted and tightened to conduct conductivity. The medium 2 is pushed into the gap 32 between the plurality of core wires 31 to discharge excess air and the conductive medium 2 in the connection slot 121, and then the tubular body 12 is riveted to fix the plurality of core wires 31. Here, in the case of pure red copper powder, the amount of the conductive medium 2 injected into the connection slot 121 is about 0.4 g, which is about 1/3 of the depth of the connection slot 121, and is a filling method higher than the exhaust hole 122. Is.

In the twisting tightening process of the power cable 3, the power cable 3 is tightened about 8 times from left to right, and when the power cable 3 or the butt conductor 1 is twisted, copper powder is pushed into the gap 32 between the core wires 31 at the front end to fill the gap and the excess. Riveting and connecting after exhausting the air.

A separation space 4 is formed between the inside of the connection slot 121 and the plurality of core wires 31, and more specifically, the ends of the plurality of core wires 31 are aligned and separated from the ends of the plurality of core wires 31 and the inside of the connection slot 121. It has a space 4. Here, the conductive medium 2 is provided in the separation space 4, fills the separation space 4, and discharges excess air. The impedance value when the conductive medium 2 was added was 1.73 mΩ, and the impedance value when the conductive medium 2 was not added was 2.51 mΩ. When transmitting with a large current conductor, low impedance prevents temperature rise.

One embodiment of the present invention provides a conductive medium for filling the gaps between the core wires and inside the connection slot, fills the conductive medium to achieve uniform conduction, and discharges air in the connection slot. Avoid the problems of increased resistance and temperature when the high current power cable transmits power.

The above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Equal range changes and decorations made based on the claims of the present invention are covered by the scope of the claims of the present invention.

100 Socket 101 Plug 1 Butt conductor 11 Connector 12 Tube 121 Connection slot 1211 Tapered slot 122 Exhaust hole 2 Conductive medium 3 Power cable 31 Core wire 32 Gap 4 Separation space

Claims (10)

A butt conductor that includes a connector at one end and a tube at the other end, with the ends of the tube recessed inward to form a connection slot.
The core wire is exposed at the end, the core wire is inserted into the connection slot, a separation space is formed between the end of the core wire and the bottom of the connection slot, and the outer peripheral surface of the core wire contacts the inner surface of the connection slot. Power cable and
A conductive medium that fills the connection slot, fills the separation space and the periphery of the core wire with a conductive medium, and the end portion of the core wire serves as a single conductive path to the connector via the conductive medium.
Power guide pin connection structure including
A power supply guide pin connection structure that presses the surface of the tube body to reduce the inner diameter of the connection slot, compresses the tube body, the core wire, and the conductive medium integrally, and discharges air inside the connection slot. .. The power guide pin connection structure according to claim 1, wherein the conductive medium is a metal material and the conductive medium is copper powder. The power guide pin connection structure according to claim 1 or 2, wherein the conductive medium is a solid, liquid, or vapor medium. The power supply guide pin connection structure according to claim 1 or 2, wherein an exhaust hole communicating with the connection slot is formed on the surface of the pipe body. The power supply guide pin connection structure according to claim 1 or 2, wherein a taper slot is formed inside the connection slot, and the conductive medium is provided in the taper slot. A butt conductor that includes a connector at one end and a tube at the other end, with the ends of the tube recessed inward to form a connection slot.
A plurality of core wires are exposed at the ends, the core wires are inserted into the connection slots, a separation space is formed between the ends of the core wires and the bottom of the connection slots, and the outer peripheral surface of some of the core wires is the connection slots. The power cable that contacts the inner surface of the
A conductive medium that fills the connection slot, fills the separation space and the periphery of the core wire with a conductive medium, and the end portion of the core wire serves as a single conductive path to the connector via the conductive medium.
Power guide pin connection structure including
A power guide pin connection structure that presses the surface of the tube body to reduce the inner diameter of the connection slot, compresses the tube body, the core wire, and the conductive medium integrally, and discharges air inside the connection slot. .. The power guide pin connection structure according to claim 6, wherein the conductive medium is a metal material and the conductive medium is copper powder. The power guide pin connection structure according to claim 6 or 7, wherein the conductive medium is a solid, liquid, or vapor medium. The power supply guide pin connection structure according to claim 6 or 7, wherein an exhaust hole communicating with the connection slot is formed on the surface of the pipe body. The power supply guide pin connection structure according to claim 6 or 7, wherein a taper slot is formed inside the connection slot, and the conductive medium is provided in the taper slot.

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