Method of manufacture insulating electrical plugs
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-045/14
H01R-013/504
H01R-024/30
H01R-043/24
B29L-031/36
H01R-103/00
출원번호
US-0198199
(2014-03-05)
등록번호
US-9744703
(2017-08-29)
발명자
/ 주소
Kao, Selvin
DeGuzman, Philip Carlo J.
출원인 / 주소
STANDARD CABLE USA, INC.
대리인 / 주소
Innovation Capital Law Group, LLP
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
Electrical plugs having single and double insulation as well as the method for manufacturing the double insulating electrical plugs are disclosed. The single insulated electrical plugs have internal walls which electrically isolate the electrical connectors. The single insulated electrical plug has
Electrical plugs having single and double insulation as well as the method for manufacturing the double insulating electrical plugs are disclosed. The single insulated electrical plugs have internal walls which electrically isolate the electrical connectors. The single insulated electrical plug has a one-piece body with a central base which accepts the electrical connectors, as well as two covers hingably coupled to the base to secure the connectors in place. The double insulated electrical plugs are insulated by both an inner body as well as the overmold material. The inner body has vents which enable overmold material to be injected into the inner portions of the inner body as well as onto the outside of the inner body. During the manufacturing process, molten material flows over the outside of the inner body, and also flows into the interior of the inner body to provide two layers of electrical insulation.
대표청구항▼
1. A method for manufacturing an overmolded electric plug, comprising: producing an injection mold comprising a top mold block and a bottom mold block, the injection mold having a mold cavity shaped to correspond to the desired shape of the overmolded electric plug, the bottom mold block shaped to r
1. A method for manufacturing an overmolded electric plug, comprising: producing an injection mold comprising a top mold block and a bottom mold block, the injection mold having a mold cavity shaped to correspond to the desired shape of the overmolded electric plug, the bottom mold block shaped to receive and detachably secure an inner body assembly having protruding electrical prongs; the injection mold having a feeder injection port and multiple air escape paths;placing an inner body assembly with protruding electrical prongs into the bottom mold, injecting a molten insulating material into the injection mold through the feeder injection port, the injected molten material urging the air within the mold to vent via the multiple air escape paths; and,removing the overmolded electric plug from the mold, whereinthe inner body assembly further comprises one or more protrusions projecting outward and away from the top of the inner body assembly; and,the upper mold block is shaped to receive the protrusions and form a seal surrounding the protrusions to prevent the molten material from depositing on the top surface of the protrusions. 2. The method for manufacturing an overmolded electric plug of claim 1, wherein: the inner body assembly further comprises feeding vents for receiving molten insulating material and escape vents for releasing air from the inner body assembly; and,urging the air within the mold to vent further comprises urging the air within the inner body assembly and air surrounding the inner body to vent via the multiple air escape paths. 3. The method for manufacturing an overmolded electric plug of claim 2, wherein the feeding and the escape vents are positioned on opposite sides of the inner body assembly separated parallel with the wires entering the inner body assembly. 4. The method for manufacturing an overmolded electric plug of claim 2, wherein a cross sectional area of the feeding vents is greater than that of the escape vents. 5. The method for manufacturing an overmolded electric plug of claim 1, wherein one of the protrusions is “L” shaped and the other of the protrusions is a reflection of the “L” shape. 6. The method for manufacturing an overmolded electric plug of claim 5, wherein marking the overmolded electric plug further comprises marking the overmolded electric plug with traceability information. 7. The method for manufacturing an overmolded electric plug of claim 1, the inner body assembly further comprises at least two eyelet shoulders surrounding the electrical prong proximal to the inner body assembly and projecting outward and away from the inner body assembly; and,the lower mold block is shaped to receive the eyelet shoulders and form a seal surrounding the eyelet shoulders to prevent the molten material from depositing on the outer surface of the eyelet shoulders. 8. The method for manufacturing an overmolded electric plug of claim 1, further comprising: testing the overmolded electric plug; and,marking the overmolded electric plug with laser. 9. A method for manufacturing an overmolded electric plug, comprising: producing an injection mold comprising a top mold block and a bottom mold block, the injection mold having a mold cavity shaped to correspond to the desired shape of the overmolded electric plug, the bottom mold block shaped to receive and detachably secure an inner body assembly having protruding electrical prongs; the injection mold having a feeder injection port and multiple air escape paths;providing a wire assembly comprising an electrical cord having at least two wires and at least two electrical connectors each having an electrical prong;providing a one-piece inner body assembly comprising: a base having one or more latching mechanisms and a plurality of cavities, each of the plurality of cavities having an aperture for receiving a corresponding electrical prong; a first cover hingably coupled to the base on a first side of the base, a second cover hingably couple to the base on a second side of the base, the second side of the base opposite that of the first side of the base; positioning the wire assembly into the base;rotating the first and second cover over the base;coupling the first and second cover to the latching mechanism of the base;placing the inner body assembly with protruding electrical prongs into the bottom mold, injecting a molten insulating material into the injection mold through the feeder injection port, the injected molten material urging the air within the mold to vent via the multiple air escape paths; and,removing the overmolded electric plug from the mold, whereinthe inner body assembly further comprises one or more protrusions projecting outward and away from the top of the inner body assembly; and,the upper mold block is shaped to receive the protrusions and form a seal surrounding the protrusions to prevent the molten material from depositing on the top surface of the protrusions. 10. The method for manufacturing an overmolded electric plug of claim 9, wherein: the inner body assembly further comprises feeding vents for receiving molten insulating material and escape vents for releasing air from the inner body assembly; and,urging the air within the mold to vent further comprises urging the air within the inner body assembly and air surrounding the inner body to vent via the multiple air escape paths. 11. The method for manufacturing an overmolded electric plug of claim 10, wherein the feeding and the escape vents are positioned on opposite sides of the inner body assembly separated parallel with the wires entering the inner body assembly. 12. The method for manufacturing an overmolded electric plug of claim 9, wherein one of the protrusions is “L” shaped and the other of the protrusions is a reflection of the “L” shape. 13. The method for manufacturing an overmolded electric plug of claim 9, the inner body assembly further comprises at least two eyelet shoulders surrounding the electrical prong proximal to the inner body assembly and projecting outward and away from the inner body assembly; and,the lower mold block is shaped to receive the eyelet shoulders and form a seal surrounding the eyelet shoulders to prevent the molten material from depositing on the outer surface of the eyelet shoulders. 14. The method for manufacturing an overmolded electric plug of claim 9, further comprising: testing the overmolded electric plug; and,marking the overmolded electric plug with laser with traceability information. 15. A method for manufacturing an overmolded electric plug, comprising: producing an injection mold comprising a top mold block and a bottom mold block, the injection mold having a mold cavity shaped to correspond to the desired shape of the overmolded electric plug, the bottom mold block shaped to receive and detachably secure an inner body assembly having protruding electrical prongs; the injection mold having a feeder injection port and multiple air escape paths;placing an inner body assembly with protruding electrical prongs into the bottom mold, injecting a molten insulating material into the injection mold through the feeder injection port, the injected molten material urging the air within the mold to vent via the multiple air escape paths; and,removing the overmolded electric plug from the mold, whereinthe inner body assembly further comprises at least two eyelet shoulders surrounding the electrical prong proximal to the inner body assembly and projecting outward and away from the inner body assembly; and,the lower mold block is shaped to receive the eyelet shoulders and form a seal surrounding the eyelet shoulders to prevent the molten material from depositing on the outer surface of the eyelet shoulders. 16. The method for manufacturing an overmolded electric plug of claim 15, wherein: the inner body assembly further comprises feeding vents for receiving molten insulating material and escape vents for releasing air from the inner body assembly; and,urging the air within the mold to vent further comprises urging the air within the inner body assembly and air surrounding the inner body to vent via the multiple air escape paths. 17. The method for manufacturing an overmolded electric plug of claim 16, wherein the feeding and the escape vents are positioned on opposite sides of the inner body assembly separated parallel with the wires entering the inner body assembly. 18. The method for manufacturing an overmolded electric plug of claim 16, wherein a cross sectional area of the feeding vents is greater than that of the escape vents.
Shulman Michael Y. (715 Opatut Ct. Toms River NJ 08753) Chan Yook K. (48 Mercury Cir. South Amboy NJ 08879) Skoczylas Henry F. (524 Jessica La. Brick NJ 08724) Hickey Suzanne V. (1472 Green Grove Rd., Female receptacle and premold therefor.
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