Rotary kinetic fluid motors or pumps – With separating means or guard for solid matter in working...
Reexamination Certificate
2003-04-21
2004-06-15
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
With separating means or guard for solid matter in working...
C415S213100, C416S24700A, C029S889100
Reexamination Certificate
active
06749398
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fan tray with fan guard, and more particularly to a hot swap fan tray with fan guard.
2. Description of the Prior Art
The so-called fan tray includes several fans mounted in a frame. As some fan has a breakdown, the built-in control circuit starts or accelerates the remaining fans to compensate the reduced cooling ability.
As partially shown in
FIG. 1
, the conventional fan tray
10
includes frame
20
, a fan
30
, a fan guard
50
and a plurality of screws
60
. Among these, the frame
20
includes a plurality of first holes
25
. The fan
30
includes a plurality of second holes
35
corresponding to the first holes
25
.
Still referring to
FIG. 1
, the conventional fan guard
50
is made of metallic mesh. The conventional fan guard
50
has the extending portions
57
extending from the plane
55
. Besides, the extending portions
57
are aligned to the first holes
25
and the second holes
35
. However, the conventional fan tray
10
suffers from the problems that the fan
30
and fan guard
50
are difficult to assembly and disassembly. During assembling, the screws
60
passing through the extending portions
57
, the first holes
25
and the second holes
35
screw the fan
30
and the fan guard
50
to the frame
20
. During disassembling, it is time-consuming to screw the screws
60
off the frame
20
to separate the fan
30
and the fan guard
50
from the frame
20
.
Therefore, there is a need in the art for a hot swap fan tray with fan guard which dose not require any screw attaching the fan
30
and the fan guard
50
to the frame
20
.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide a hot swap fan tray and fan guard.
A more specific object of the present invention to provide a fan tray which does not require any screw attaching fan and fan guard to the fan tray.
The present fan tray includes a frame, at least one fan and at least one fan guard. Among these, the frame includes a plurality of first holes. The fan includes a plurality of second holes. The fan guard is capable of hot swap. The fan guard further includes a plane and at least one protrusive terminal. The protrusive terminal projects from the plane and includes at least one bend, such as the first bend and the second bend.
The bend is formed by bending the metal wire constituting the plane. Besides, the bend may be bent toward the same or different direction if the number of the bend is more than one. For example, the first bend is bent toward the center of the plane and the second bend is bent toward the direction opposite to the center of the plane. Alternatively, the first bend is bent along some tangent line of the plane and the second bend is bent opposite to the direction of the tangent line. In addition, the first bend and the second bend are continuous or discontinuous to each other.
During assembling, the protrusive terminal passes through the first hole and the second hole, thereby the elastic bend attaching the fan and the fan guard to the frame. Since the bend is elastic, the first bend and the second bend can pass through the first hole and the second hole. Then, the first bend and the second bend return to original shape due to elasticity after passing through the first hole and the second hole. In this manner, the first bend and the second bend attach the fan and the fan guard to the frame. During disassembling, the first bend and the second bend are pulled and compressed so as to disconnect the fan guard from the frame.
It is noted that the present fan guard permits of directly attaching to the fan by means of the protrusive terminal.
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Chuang Te-Tsai
Huang Wen-Shi
Lu Chow-Wen
Wen Chao-Wu
Birch & Stewart Kolasch & Birch, LLP
Delta Electronics , Inc.
Look Edward K.
McAleenan J. M.
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