BRIEF DESCRIPTION OF THE DRAWINGS
These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
FIG. 1 is an assembling schematic diagram of an embodiment of a high density electrical connector of the invention;
FIG. 2 is an assembling section view diagram of an embodiment of the electrical connector of the invention;
FIG. 3 is a partial enlarged diagram of FIG. 2;
FIG. 4 is an oblique view diagram of an embodiment of a terminal of the invention;
FIG. 5 is a schematic diagram of the invention for an embodiment of the electrical connector butted with an electronic device;
FIG. 6 is a schematic diagram of a conventional electrical connector;
FIG. 7 is a schematic diagram of another conventional electrical connector; and
FIG. 8 is a schematic diagram of another conventional electrical connector for CPU.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Refer to FIG. 1. FIG. 1 illustrates an assembling schematic diagram of an embodiment of a high density electrical connector of the invention. The high density electrical connector 100 may connect a printed circuit board and an electronic device. The high density electrical connector 100 includes a connector body 110 made of an isolation material, a plurality of terminal channels 130 disposed in the connector body 110, and a plurality of terminals 140 disposed in the terminal channels 130 respectively to transmit electrical signals. The terminal channels 130 are extended in the connector body 110 from a side near the printed circuit board to an opposite side and cross through the connector body 110. The terminals 140 of the high density electrical connector 100 are inserted into the terminal channels 130 of the connector body 110 respectively from a top of the connector body 110 far to the printed circuit board. The electronic device has a plurality of butt terminals to insert into the corresponding terminal channels 130 and to be into contact with the terminals 140 in the terminal channels 130. Thus the electronic device may electrically connect with the printed circuit board through the terminals 140 of the high density electrical connector 100.
Referring to FIG. 1, FIG. 2, and FIG. 3, the high density electrical connector 100 is disposed on the printed circuit board 200. The printed circuit board 200 has a plurality of contact points 210. The terminal channels 130 in the connector body 110 are disposed corresponding to the contact points 210 respectively. The terminal channels 130 are divided by a plurality of dividing walls 132 disposed between two terminal channels 130. A position and a shape of the terminal channel 130 may be bound by the dividing walls 132.
Each terminal 140 may include a main portion 142, at least an elastic arm 146, and an extending portion 145. The extending portion 145 is extended from a side of the main portion 142 near to the printed circuit board 200 to electrically connect with the contact points 210 of the printed circuit board 200.
In FIG. 3, each dividing wall 132 for dividing the terminal channels 130 has a shoulder 134 disposed on the side of the dividing wall 132 far to the printed circuit board 200. The shoulder 134 of the dividing wall 132 is an incline inclining to the terminal channel 130 and an opening of the terminal channel 130 far to the printed circuit board 200 is larger to an opening of the terminal channel 130 near to the printed circuit board 200 and form a neck at the opening of the terminal channel 130. In this embodiment, each terminal 140 has two elastic arms 146 and each dividing wall 132 near the elastic arm 146 has the shoulder 134. However, if each terminal 140 has only one elastic arm 146, the dividing wall 132 may have only one shoulder 134.
Refer to FIG. 4. FIG. 4 illustrates an oblique view diagram of an embodiment of a terminal of the invention. The elastic arm 146 of the terminal 140 may be elastically deformed and have a guiding portion 148 extended. The guiding portion 148 of the terminal 140 is extended from the elastic arm 146. The guiding portion 148 of the elastic arm 146 may be inserted into the neck of the diving wall 132 of the terminal channel 130 to be closer to the shoulder 134 when the terminal 140 is in a free state, that is, the elastic arm 146 of the terminal 140 has not been elastically deformed. Thus the guiding portion 148 of the end of the elastic arm 146 may approach the shoulder 134 of the dividing wall 132.
Refer to FIG. 5. FIG. 5 illustrates a schematic diagram of the invention for an embodiment of the electrical connector butted with an electronic device. The guiding portion 148 of the terminal 140 is near to the shoulder 134 of the diving wall 132. The elastic arm 146 and the guiding portion 148 may be elastically deformed when the butt terminal 160 is inserted into the terminal channel 130 and the guiding portion 148 of the terminal 140 may further approach the shoulder 134 of the dividing wall 132. If the butt terminal 160 is slantwise inserted into the terminal channel 130, the guiding portion 148 may be forced to come into contact with the inclined shoulder 134 of the dividing wall 132. A normal force support received from the guiding portion 148 and the shoulder 134 may adjust the butt terminal 160 to be inserted into the terminal channel 130.
The butt electronic device may have a pin grid array (PGA) and the terminal 160 is a pin terminal in the embodiment. The butt electronic device may also have a ball grid array (BGA) and the terminal 160 is a ball terminal in other embodiment.
The terminal 140 may extend an interfering portion 144 from two side of the main portion 142 respectively. The interfering portion 144 may interfere with the dividing wall 132 to keep and hold the terminal 140 in the terminal channel 130. The interfering portion 144 of the terminal 140 is slightly larger than a distance between the dividing walls 132 and the interfering portion 144 may interfere with the dividing wall 132 to keep and hold the terminal 140 in the terminal channel 130 in the embodiment but not limited. The high density electrical connector 100 may have a position structure to fix the high density electrical connector 100 on the printed circuit board 200 precisely. The position structure includes a position plug 150 disposed on a bottom of the connector body 110 and a position cavity 220 disposed on the printed circuit board 200 corresponded. The high density electrical connector 100 may be fixed on the printed circuit board 200 precisely by coupling the position plug 150 and the position cavity 220. Although the present invention has been described in considerable detail with reference certain preferred embodiments thereof, other embodiments are possible. For example, the position structure may have different shapes and arrangements. Therefore, their spirit and scope of the appended claims should no be limited to the description of the preferred embodiments container herein.
The extending portions 145 of the terminal 140 may be welded on a plurality of contact points 210 of the printed circuit board 200 respectively by a surface mount technique. The extending portion 145 may also be bent and welded on the contact point 210. The extending portion 145 may be bent and made parallel with the printed circuit board 200 and inserted into the terminal channel 130. The extending portion 145 may also be inserted into the terminal channel 130 and bent to be made parallel to the printed circuit board 200.
Refer to FIG. 2, FIG. 3, and FIG. 4. The integration of the electronic device is increasing with the increasing density of the terminals 140 contacted with the contact points 210. The smoothness and accuracy of mounting the extending portion 145 with the contact points 210 becomes an important part of manufacturing the high density electrical connector 100. Following discloses an embodiment of a method for assembling the terminals 140 into the connector body 110 of the high density electrical connector 100 of the invention. The method may assemble the connector body 110 with the terminals 140 connected with a carrier. The method includes inserting the terminals 140 into the terminal channels 130 of the connector body 110 respectively from the top of the connector body 110 far to the printed circuit board 200, wherein the terminals 140 are connected on an end of the carrier far to the printed circuit board 200;separating the terminals 140 and the carrier; and mounting the terminals 140 and the printed circuit board 200 to generate the electrical connection. Separating the terminals 140 and the carrier further includes generating a joint 310 disposed on the side of each terminal 130 far to the printed circuit board 200. Mounting the terminals 140 and the printed circuit board 200 further includes bending the extending portion 145 disposed of each terminal 140 near to the printed circuit board 200 and mounting the extending portion 145 with the contact point 210 of the printed circuit board 200. The extending portion 145 is formed on the terminal 140 directly.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.
Patent Application
20080045045
