Power jack with anti-mating means
AssigneeHon Hai Precision Ind. Co., Ltd.
InventorWei-Xing Chen
Life of this patent
Estimating the term…
Abstract
A power jack (1) includes a dielectric housing (10) and a central terminal (20) received in the dielectric housing. The dielectric housing includes a mating face (11), a cavity (130) in the mating face and an anti-mating portion (15) formed on an inner face of the cavity for preventing full insertion of a non-complementary power plug having a smaller transmission power than that of the power jack. The central terminal includes a contact section (21) extending into the cavity for electrically connecting with a complementary power plug.
Claims11
A power jack comprising:
- a dielectric housing comprising a mating face, a cavity in the mating face and an anti-mating portion formed on an inner face of the cavity for preventing the power jack from being fullly inserted and electrically connecting with a power plug having a smaller transmission power than that of the power jack, but allowing the power jack being inserted and electrically connecting with a power plug having a same or larger transmission power than that of the power jack;
- and
- a central terminal comprising a contact section extending into the cavity and a soldering section for electrically connecting with a printed circuit board.
A connector assembly comprising:
- a power jack comprising a dielectric housing, a central terminal and a spring terminal both received in the dielectric housing, the dielectric housing comprising a mating face, a cavity in the mating face and a first anti-mating portion extending into the cavity, the central terminal comprising a contact section extending into the cavity;
- and
- a power plug comprising a first terminal for engaging with the contact section of the central terminal, a second terminal surrounding the first terminal for engaging with the spring terminal and formed with a second anti-mating portion and a dielectric housing between the first and the second terminals, the first anti-mating portion of the power jack engaging with the second anti-mating portion of the power plug for preventing the power plug from further insertion into the cavity.
A method of determining a proper plug, the method comprising:
- providing a jack comprising a dielectric housing with at least one central terminal, the dielectric housing comprising a mating face, a cavity extending inward from the mating face, a first anti-mismating device formed in the cavity;
- and
- providing a plug pool including randomly at least one correct plug and one incorrect plug, each of said plugs defining a central contact hidden behind a front face thereof and enclosed by a circumferential piece, a second anti-mating device formed on the circumferential, and a distance between the front face and the second anti-mating device in the incorrect plug is smaller than that between the front face and the second anti-mismating device in the correct plug;
- respectively mating each one of the plugs with the jack, the central contact radially engaged with the central terminal, and the first anti-mating device confronting the second anti-mating device in a mating direction to prevent the incorrect plug from electrically connecting with the jack via abutment between the first anti-mating device and the second anti-mismating device in the mating direction while allowing the correct plug to electrically connect with the jack.
Dependencies are inferred from the claim text.