Fixed device for the bulb socket

This present application represents a continuation-in-part (C.I.P) of U.S. patent application Ser. No. 09/546,175 filed on Apr. 11, 2000, which is incorporated herein by reference.

The present invention provides a C.I.P. of U.S. patent application Ser. No. 09/546,175, namely, an improved fixed device for the bulb socket. It particularly refers to a jacket set on the fixed device for the bulb socket and a number of jack catches set inside the jacket for fixation to the bulb.

The inventor applied for U.S. patent application Ser. No. 09/546,175, in which, a concave ratchet-shaped jack catch as a stopping device is disposed on every flank of the leading-in socket of the bulb socket, and a convex ratchet-shaped jack catch as a resistance device is disposed on an inner-side of the fixing frame. During fabrication, utilizing the fixing frame to connect with the leading-in socket of the bulb socket, means the stopping device will gear with the resistance device in a secure combination. Hence, a firm connection of the fixing frame and the leading-in socket serves to avoid the operation of a heat pressing and forms a more secure connection than is achieved through a conventional high-frequency soldering.

The above mentioned application only discussed the connection between the leading-in socket and the fixing frame. However, no better solution of the connection between the bulb and the bulb socket was disclosed. In the past, as the bulb was fabricated onto the bulb socket, of its fixation was not fastening enough which reduced to the bulb in a slippage.

A chief object of the present invention is to provide a device for effectively fixing the bulb on the bulb socket.

Secondly, the invention has designed a jack catch inside a jacket to reinforce the connection between the bulb and the bulb socket.

In order for the members of the examination committee are enable to further understand the objects, features and functions of the invention, a example as well as drawings are offered as follows:

FIG. 1 : The compound drawing of the invention.

FIG. 2 : The breakdown drawing of the invention.

FIG. 3 : The side-elevation drawing of the invention.

FIG. 4 : The composed plan-view drawing of the invention.

( 20 ) bulb socket.

( 21 ) leading-in socket.

( 22 ) jacket.

( 23 ) caulking groove.

( 30 ) bulb

( 31 ) convex catch.

( 32 ) bulb-neck.

( 33 ) filament joint.

( 211 ) hole.

( 221 ) jack catch.

Please refer to FIGS. 1 and 2. The bulb socket is composed of a bulb socket ( 20 ) and a jacket ( 22 ) that defines an opening. The bulb socket ( 20 ) has integrated form and is made of engineering plastics. A flat leading-in socket ( 21 ) extends from one of its ends.

As is shown in FIG. 3, there is a caulking groove ( 23 ) on the plane part of the bulb socket ( 20 ). The caulking groove ( 23 ) is encircled by the jacket ( 22 ). There are ten jack catches ( 221 ) inside the jacket ( 22 ). There are three convex (i.e., curved or rounded like the exterior or a sphere of circle) catches (elongated ridges) ( 31 ) around transparent bulbous portion of the bulb ( 30 ). Besides, there are three convex catches ( 31 ) opposite to it. The neck ( 32 ) of the bulb ( 30 ) is connected with four electric filament joints ( 33 ) fixed on the bulb socket ( 20 ). When connected, the bulb-neck ( 32 ) can be inserted into the caulking groove ( 23 ) while the filament joint ( 33 ) goes through the leading-in socket ( 21 ). Furthermore, the filament joint ( 33 ) is bent and flatly attached onto the surface of the leading-in socket ( 21 ) for forming the positive and negative electric wires.

Please refer to FIGS. 2, 3 and 4 . The filament joint ( 33 ) of the bulb ( 30 ) is in direct correspondence to the hole ( 211 ) on the base of the leading-in socket ( 21 ), in which the entire bulb ( 30 ) is inserted from upwardly to bottomwardly, then into the jacket ( 21 ) of the bulb socket ( 20 ). Thus, the filament joint ( 33 ) will go through the leading-in socket ( 21 ) and the filament joint ( 33 ) will further be bent and flatly attached onto the surface of the leading-in socket ( 21 ) for forming the positive and negative electric wires. As the structure in integrated, each convex catch ( 31 ) outside the bulb ( 30 ) will be geared with a jack catch (elongated, spaced-apart convex ridges) ( 221 ) inside the jacket ( 22 ) as well as integration of every jack catch ( 221 ). This is a more secure fixture for the bulb ( 30 ) and bulb socket ( 20 ) than others.

All in all as mentioned above, the practicability of this invention goes beyond doubts and conforms to the legal stipulations required by patent laws, accordingly, this application is applying for this matter.