The invention relates to an electronic apparatus and a printed circuit board thereof, and in particular, to a printed circuit board with DIP (dual inline package) devices.
Typically, DIP devices are disposed on the printed circuit boards of electronic apparatuses by an auto insert (AI) method. Referring to
Since the holes 3a are circular, the pins 1a of the DIP device 1 may not be inserted into the holes 3a due to small deviation in position or orientation. Thus, the yield of assembly is difficult to enhance.
An embodiment of the invention provides a printed circuit board comprising a pair of holes. The pair of holes has a geometrical center, and is substantially symmetrical with respect to the geometric center so that each hole is arc-shaped.
Furthermore, each hole extends a first dimension along a first direction in a plane where the pair of holes is formed, and the first dimension is larger than any dimension in the plane of each hole.
Moreover, a center line is defined on the printed circuit board, and the pair of holes is symmetrical with respect to the center line.
Additionally, a central angle formed by each hole is less than 180 degrees.
An electronic apparatus is also provided, comprising a printed circuit board and a dual-inline-package (DIP) device. The printed circuit board is formed with a pair of holes. The pair of holes has a geometrical center, and is substantially symmetrical with respect to the geometric center so that each hole is arc-shaped. The DIP device comprises a pair of pins, and is disposed on the printed circuit board by inserting the pins into the holes.
The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
a is a schematic view of DIP devices disposed on a conventional printed circuit board;
b is a partial enlarged view of the printed circuit board in
a is a schematic view of an embodiment of an electronic apparatus;
b is a partial enlarged view of a printed circuit board in
a is a schematic view of an embodiment of an electronic apparatus;
b is a partial enlarged view of a printed circuit board in
a and 2b are schematic views of an embodiment of an electronic apparatus 10. The electronic apparatus 10 comprises a printed circuit board 11 and three DIP devices 12. Although only three DIP devices 12 are shown in
The printed circuit board 11 comprises three pairs of holes 11a. Each pair of holes 11a has a geometric center C as shown in
Each hole 11a substantially extends in a first direction X in the plane where the pair of holes exist by a first dimension L1. The first dimension L1 exceeds a second dimension, such as L2, extending in a second direction of the hole 11a.
Referring to
As stated above, since the holes 11a of the embodiment are not circular, the margin for inserting the DIP device increases. Even if the pins are slightly deviated, they can be smoothly inserted into the holes, thus enhancing the yield.
a and 3b are schematic views of an embodiment of an electronic apparatus 20. The electronic apparatus 20 comprises a printed circuit board 21 and three DIP devices 22.
Holes 21a of the printed circuit board 21 are substantially rectangular. As shown in
Each hole 21a substantially extends in a first direction X parallel with the center line Y by a first dimension L1. The first dimension L1 exceeds a second dimension, such as L2, extending in a second direction of the hole 21a.
As stated above, since the holes 21a of the embodiment are rectangular, the margin for inserting the DIP device increases. Even if the pins are slightly deviated, they can be smoothly inserted into the holes, thus enhancing the yield.
While the invention has been described by way of example and in terms of preferred embodiments, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Number | Date | Country | Kind |
---|---|---|---|
93109211 | Apr 2004 | TW | national |