CN211320448U - Power plug - Google Patents

Abstract

The utility model discloses a power plug belongs to the plug field, and power plug includes: the cable comprises a plurality of conducting wires and an insulating outer skin wrapping the outer parts of the conducting wires; the inner frame is provided with a plurality of terminals, and a plurality of wires are respectively and electrically connected with the terminals; and the metal ring is locked at one end of the insulating outer skin close to the inner frame and is used for enabling the insulating outer skin to press the plurality of wires to prevent water from passing between the insulating outer skin and the wires. The utility model discloses a power plug can prevent that water from continuing to flow and invading the equipment terminal that the cable is connected between insulating crust of cable and the wire after invading the plug inside.

Description

Power plug

Technical Field

The utility model relates to a plug field especially relates to a power plug.

Background

A power plug refers to a device that connects a device such as an electrical appliance to a power source. The power supply socket and the plug are different in appearance, grade, size and kind according to the region of the country.

The power plug usually consists of a terminal, an inner frame, three power lines of a live wire, a zero wire and a ground wire which are connected to the inner frame, and an outer mold arranged outside the inner frame, wherein the outer mold is usually connected with the inner frame in a clamping or injection molding mode. But the existing power plug has unsatisfactory waterproof performance, even if the outer mold seals the power line, the inner frame and the like in the inner part in an injection molding mode, but micro gaps still exist between the outer die and the power line, between the outer die and the inner frame, between the outer die and the terminal and between the terminal and the inner frame, in practical application, when the novel energy charging pile plug is used or wetted by water in a humid environment or other environments with much water (particularly the novel energy charging pile plug is often exposed and is easy to be invaded by rainwater, a grounding slot is often arranged on the novel energy charging pile plug except for a live wire and a zero wire, rainwater is easy to invade along the grounding slot), water is easy to permeate into the plug from a gap between the outer mold and the power wire and a gap between the terminal and the inner frame, and flows along a gap between the conductive wire of the cable and the insulating sheath to intrude into an equipment terminal to which the cable is connected, resulting in short-circuiting and damage of the equipment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a power plug to prevent water from continuously flowing between the cable insulation sheath and the wire after entering the inside of the plug and entering the equipment terminal connected by the cable.

The utility model adopts the technical proposal that:

the utility model provides a pair of power plug, include: the cable comprises a plurality of conducting wires and an insulating outer skin wrapping the outer parts of the conducting wires; the inner frame is provided with a plurality of terminals, and the plurality of leads are electrically connected with the plurality of terminals respectively; and the metal ring is locked at one end, close to the inner frame, of the insulating outer skin, so that the insulating outer skin is pressed against the plurality of wires to prevent water from passing between the insulating outer skin and the wires.

As a further improvement of the scheme, the metal ring is riveted and locked on the insulating outer skin.

As a further improvement of the scheme, the inner frame further comprises an outer die, and the outer die is coated outside the inner frame.

As a further improvement of the present solution, the metal ring is located inside the outer mold.

As a further improvement of the scheme, the metal ring is an aluminum ring or an aluminum alloy ring.

As a further improvement of the scheme, the metal ring further comprises a sleeve, and the sleeve is wrapped outside the metal ring.

As a further improvement of the present solution, the sleeve is a heat-shrinkable sleeve.

As a further improvement of the scheme, the plurality of wires extend out of the insulating sheath and are connected with the plurality of terminals; one end of the insulating outer skin close to the inner frame is positioned in the sleeve.

As a further improvement of the solution, the sleeve is located inside the outer mold.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a pair of power plug, through setting up the cable that includes wire and insulating crust, including the inner tower of terminal, and the wire is connected with the terminal electricity respectively, in order to form the plug, through the one end locking becket of being close to the inner tower on insulating crust, becket locking insulating crust, and make insulating crust compress tightly a plurality of wires of its inside and prevent water from passing through between insulating crust and the wire, through becket locking effect promptly, make between the crust of insulating crust and wire crowded compressing tightly each other and reduce the gap between insulating crust and the wire, thereby prevent that water from flowing along the gap between insulating crust and the wire after inner tower one end gets into. Above can find out, the utility model provides a power plug can prevent that water from invading the plug inside to continue to flow and invading the equipment terminal that the cable is connected between insulating crust of cable and the wire, effectively ensures the security performance.

Drawings

Fig. 1 is a schematic structural diagram of a power plug according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the power plug provided in the embodiment of the present invention when the outer mold is removed;

fig. 3 is a schematic structural view of the power plug provided in the embodiment of the present invention when the outer mold and the sleeve are removed;

fig. 4 is a schematic structural view of a cable (a metal ring is sleeved on an insulating sheath without being riveted) according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a cable (after riveting a metal ring) according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a cable (after a sleeve is provided) according to an embodiment of the present invention.

In the figure:

1. a cable; 11. a wire; 12. an insulating sheath; 2. an inner frame; 21. a terminal; 3. a metal ring; 4. an outer mold; 5. a sleeve.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings and technical solutions needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 6, the power plug provided in this embodiment includes a cable 1, an inner frame 2, and a metal ring 3, where the cable 1 includes a plurality of wires 11 and an insulating sheath 12 wrapped outside the plurality of wires 11, the inner frame 2 is provided with a plurality of terminals 21, the plurality of wires 11 are respectively electrically connected to the plurality of terminals 21, preferably, the inner frame 2 has three terminals, the wires 11 have 3 wires, which are respectively a live wire, a neutral wire, and a ground wire, and the metal ring 3 is locked on one end of the insulating sheath 12 close to the inner frame 2, so that the insulating sheath 12 compresses the plurality of wires 11 to prevent water from passing between the insulating sheath 12 and the wires 11. The metal ring 3 locks the insulating sheath 12, so that the insulating sheath 12 presses the plurality of wires 11 inside the insulating sheath 12 to prevent water from passing between the insulating sheath 12 and the wires 11, namely, the insulating sheath 12 and the sheaths of the wires 11 are mutually squeezed and pressed to reduce a gap between the insulating sheath 12 and the wires 11 through the locking action of the metal ring 3, so that the water is prevented from entering from one end of the inner frame 2 and then flowing along the gap between the insulating sheath 12 and the wires 11. It can be seen from the above that, the power plug provided by the embodiment can prevent water from invading into the plug and then continuously flowing along the gap between the cable insulation sheath and the conducting wire to invade the equipment terminal connected with the cable, thereby effectively preventing the terminal equipment from being damaged.

Specifically, the metal ring 3 is riveted and locked on the insulating sheath 12, the metal ring 3 is arranged on the riveting press to be riveted in multiple directions after being sleeved on the insulating sheath 12 of the cable 1, so that the metal ring 3 is locked on the cable 1, the metal ring with the corresponding specification can be selected according to the thickness of the insulating sheath 12 and the wire, and the riveting pressure of the riveting press on the metal ring is controlled to ensure that the inner wall of the insulating sheath 12 and the sheath of the wire are tightly extruded and the metal wire inside the sheath of the wire is not damaged (the metal wire inside the sheath of the wire 11 is not damaged due to the wrapping buffer protection of the insulating sheath 12 and the sheath of the wire 11), wherein the riveting press is used for riveting ring-shaped parts, an eight-direction riveting press purchased in the market can be directly adopted, and the riveting is stable. The riveting press is a mature prior art, such as various eight-direction riveting presses on the market, for example, a steel ring riveting press disclosed in chinese patent document No. CN 207994307U.

Specifically, the power plug further comprises an outer die 4, and the outer die 4 is coated outside the inner frame 2.

Specifically, the metal ring 3 is an aluminum ring or an aluminum alloy ring, and of course, the metal ring 3 may be a metal ring made of other metal materials.

Further, the metal ring 3 is located inside the outer die 4, and by the arrangement, the metal ring 3 can be protected, and the power plug is more attractive without exposing the metal ring 3.

Further, the power plug further comprises a sleeve 5, the sleeve 5 is wrapped outside the metal ring 3 and can protect the metal ring 3, and when the metal ring 3 is riveted on the insulating outer skin and then an injection molding outer mold 4 is formed, the sleeve 5 is used for insulating heat of the metal ring 3, so that the phenomenon that the insulating outer skin is heated and deformed to influence the extrusion degree between the insulating outer skin 12 and the lead due to the fact that the injection molding high temperature is conducted to the insulating outer skin through the heat conduction of the metal ring 3 is avoided.

Optionally, the sleeve 5 is a heat-shrinkable sleeve, which may be a polyolefin heat-shrinkable sleeve, and after being heated and shrunk, the sleeve can be wrapped around the metal ring 3 and is not easy to move.

Furthermore, the plurality of wires 11 extend out of the insulating sheath 12 to be connected with the plurality of terminals 21, and one end of the insulating sheath 12 close to the inner frame 2 is located inside the sleeve 5. The end of the insulating sheath 12 and the lead 11 are covered by the sleeve 5, so that water can be prevented from entering from the gap between the outer mold and the insulating sheath 12 and entering the inside of the insulating sheath 12 along the end of the insulating sheath 12.

Further, the sleeve 5 is located inside the outer mold 4, the aesthetic degree of the power plug is not affected due to the fact that the sleeve 5 is exposed to the outside, and the outer mold 4 wraps the sleeve 5, so that the sleeve 5 can be prevented from being damaged.

When the power plug is produced, the metal ring 3 is riveted on the insulating outer skin 12, the insulating outer skin 12 between the end part of one end of the insulating outer skin 12 and the metal ring 3 is removed, the wires are exposed out of the insulating outer skin 12, the sleeve 5 is arranged outside the metal ring 3, then each wire is riveted with each terminal on the inner frame respectively, the sleeve 5 is heated to shrink and cover the end parts of the metal ring 3 and the insulating outer skin 12, and finally the inner frame and the sleeve 5 are arranged on an injection molding machine to be subjected to injection molding and outer mold 4.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (9)

1. A power plug, comprising:

the cable (1) comprises a plurality of conducting wires (11) and an insulating outer skin (12) which is wrapped outside the conducting wires (11);

the inner frame (2) is provided with a plurality of terminals (21), and the plurality of leads (11) are respectively and electrically connected with the plurality of terminals (21);

a metal ring (3) locked on one end of the insulating outer skin (12) close to the inner frame (2) for enabling the insulating outer skin (12) to press the plurality of leads (11) to prevent water from passing between the insulating outer skin (12) and the leads (11).

2. A power plug as defined in claim 1, wherein:

the metal ring (3) is riveted and locked on the insulating outer skin (12).

3. A power plug as defined in claim 1, further comprising:

the outer die (4) is coated outside the inner frame (2).

4. A power plug according to claim 3, further comprising:

the metal ring (3) is positioned inside the outer die (4).

5. A power plug as defined in claim 1, wherein:

the metal ring (3) is an aluminum ring or an aluminum alloy ring.

6. A power plug according to claim 3, further comprising:

the sleeve (5) is wrapped outside the metal ring (3).

7. A power plug as defined in claim 6, wherein:

the sleeve (5) is a heat-shrinkable sleeve.

8. A power plug as defined in claim 6, wherein:

the plurality of leads (11) extend out of the insulating sheath (12) and are connected with the plurality of terminals (21);

the end part of the insulating outer skin (12) close to one end of the inner frame (2) is positioned in the sleeve (5).

9. A power plug as defined in claim 6, wherein:

the sleeve (5) is positioned inside the outer die (4).

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