Electrical connectors – With guiding means for mating of coupling part – For guiding side of movable panel – e.g. – circuit board
Reexamination Certificate
2004-03-30
2004-11-23
Ta, Tho D. (Department: 2833)
Electrical connectors
With guiding means for mating of coupling part
For guiding side of movable panel, e.g., circuit board
C439S064000, C361S802000
Reexamination Certificate
active
06821141
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a sliding track assembly and, more specifically, to a sliding track assembly for mobile PC board.
2. Description of Related Art
A blade server is a powerfully computable device which is popularly invited in the market. In regular blade servers, mobile PC boards are used for the advantage of being easy to upgrade. For example, a PC board having specific functions is modularized and packed to form a mobile PC board. A sliding track assembly is provided inside a blade server and has two sliding tracks bilaterally provided on the inside for sliding the mobile PC board and supporting the mobile PC board in position. If a user desires to upgrade one function of component parts of the mobile PC board, the upgrade procedure is taking the old model mobile PC board away from the sliding track assembly, and then inserting a new model of mobile PC board into the sliding track assembly for a replacement. This component parts upgrading procedure is quite simple.
FIG. 1
illustrates a sliding track assembly
10
provided inside a blade server
5
according to the prior art. The sliding track assembly
10
comprises two sliding tracks
12
respectively provided on the inner side of each of the two opposite side boards thereof. The sliding tracks
12
are respectively made by stamping respective iron plate members
121
into substantially I-shaped or U-shaped bars, or formed of plastic card guides. The mobile PC board
14
can be inserted into the sliding tracks
12
(set in the sliding track assembly
10
). However, either made of iron plate members or plastic card guides, the sliding tracks
12
provide a surface contact when received the mobile PC board
14
. Therefore, the user needs to employ much effort to the mobile PC board
14
to overcome the friction force between the sliding tracks
12
and the mobile PC board
14
when inserting the mobile PC board
14
into the sliding tracks
12
. Further, the rough edges of the sliding tracks
12
, if made of iron plate members
121
, may scratch the surface of the mobile PC board
14
, causing the mobile PC board to make a short circuit.
Therefore, it is desirable to provide a sliding track assembly for mobile PC board that eliminates the aforesaid drawbacks.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide a sliding track assembly for mobile PC board, which reduces friction for enabling the mobile PC board to be easily inserted into the sliding track assembly.
It is another object of the present invention to provide a sliding track assembly for mobile PC board, which does not scratch the surface of the mobile PC board.
It is still another object of the present invention to provide a sliding track assembly for mobile PC board, which is inexpensive to manufacture.
According to one aspect of the present invention, A sliding track assembly is disclosed and comprises two side boards, and two parallel sliding tracks respectively form in corresponding inner sides of the side boards and adapt to receive a mobile PC board, wherein the parallel sliding tracks each comprises: a sliding way, the sliding way haves a width greater than the thickness of the mobile PC board; at least two lower circular locating members align in a line, the at least two lower circular locating members each has a top side adjacent to a bottom side of the sliding way; and at least one upper circular locating member, the at least one upper circular locating member has a bottom side adjacent to a top side of the sliding way.
Because the circular locating members have a smooth surface and provide a small contact area and narrow sliding ways and because the circular locating members are inexpensive to manufacture and easy to install, the invention achieves the aforesaid objects.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 4098046 (1978-07-01), Papa
patent: 4214292 (1980-07-01), Johnson
patent: 5055061 (1991-10-01), Lichtenwalter
patent: 6115242 (2000-09-01), Lambrecht
patent: 6373712 (2002-04-01), Bailis et al.
patent: 6735093 (2004-05-01), Mu-Tsai
Bacon & Thomas PLLC
Ta Tho D.
Tatung Co. Ltd.
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