A terminal formed by bending from a single metal piece for use in a bulb socket having a bulb insertion opening for accommodating a bulb, where the terminal is used for connecting with a base electrode formed in the outer perimeter of the bulb includes a contact element. The contact element is formed by stamping the metal piece to have a contact portion and a spring portion for resiliently hold the contact portion in contact with the base electrode. The spring portion is located on a position away from the base electrode when the bulb is inserted in the bulb insertion opening. Therefore, the spring porion of the contact element is kept from deterioration of spring characteristics caused by the heat from the bulb.
A bulb socket that avoids the various disadvantages caused by insert molding of a terminal of a complicated shape and also satisfies characteristics required for different portions of the terminal. A housing body is made of a plastic material and includes a socket housing for receiving a base portion of a bulb and a connector housing for receiving a feeder connector. Each connector-side terminal is of a generally L-shape and has a connector tab portion and a relay tab portion extending perpendicularly from this connector tab portion. Bulb-side terminals are provided in the socket housing at corner portions thereof in opposed relation to each other and function to mechanically hold the base portion of the bulb, and also function to electrically contact lead wires on the base portion, respectively. This bulb-side terminal has a relay terminal portion formed at a lower end thereof, which portion can be press-fitted on the relay tab portion of the connector-side terminal.
6017235 - Bulb socket - Owned by Koito Manufacturing Co., Ltd, (Tokyo,JP) Sumitomo Wiring System Ltd. (Yokkaichi,JP)
A bulb socket for receiving a base of a bulb, comprises: a bulb mounting hole into which the base of the bulb is mounted; a recessed portion formed in an inner peripheral surface of the bulb mounting hole; and an electrical connection terminal stored-in the recessed portion, the electrical connection terminal having a contact piece formed by cutting and raising a portion of the electrical connection terminal to project out from the recessed portion and contact with an outer peripheral surface of the bulb base, wherein the contact piece is bent at least two times toward the bulb mounting hole.
The electric mains voltage lamp has a lamp cap with a cylindrical portion abutting a glass envelope. A resilient cover member circumferentially clamps around and covers the cylindrical portion of the lamp cap and has a circumferential, outwardly extending, flexible collar. The cover member may also cover a cylindrical portion of the envelope which is adjacent the lamp cap. If the envelope is tubular in shape, the cover member may be a sleeve closed at an end thereof which is remote from the lamp cap, so as to cover the whole of the envelope. If the lamp has a bulbous envelope, the lamp may have a resilient domeshaped member covering a portion of the envelope opposite the lamp cap and having an overlap with the cover member. The lamp is able to provide a gastight connection to a lampholder.
An axial thrust bulb socket with bayonet removal of the bulb includes a flat bulb support member mounted in spaced relation to a pair of resilient socket end connectors and having a circular socket opening with a pair of pin retainer tabs extending therefrom toward the socket end connectors and having pin latch notches at ends thereof which open toward the socket end connectors. Pin clearance notches are formed at edges of the socket opening in alignment with guide edges of the tabs. The tabs have pin guide grooves which align with the pin latch notches. A bayonet style bulb can be inserted in the bulb support member by aligning the bayonet pins thereof with the pin notches of the tabs and then inserting the bulb base into the socket opening by axial movement alone until the pins snap into the latch notches. The bulb can be removed in a conventional bayonet manner and can, alternatively, be installed in a bayonet manner for manual replacement.