Fixing device for interface cards

Details Fixing device for interface cards Fixing device for interface cards

1999-01-21

2001-01-16

Vu, Hien (Department: 2833)

Electrical connectors

With coupling movement-actuating means or retaining means in...

Coupling part for receiving edge of planar board moving...

C439S061000

Reexamination Certificate

active

06174189

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fixing device for interface cards, and in particular to a fixing device by which various kinds of interface cards of different elevations can be fixed within a computer mainframe, and thus, assembly cost and time can be saved.
2. Description of the Prior Art
In general, various kinds of interface cards are inserted into a computer mainframe. A large interface cards is often inserted with a large number of interface cards of different sizes. However, since each interface card has an individual height and length, so that as an interface card is fixed, it needs to have fixing device of a different size than that used for an interface card of a different size. Thus, this is inconvenient in assembling the mainframe and much time is necessary for the assembly process. However, some designs have been developed to solve the problems induced from the length differences of interface cards, while there have been no designs being used to solve the problems relating to differences in the elevations of interface cards.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide a fixing device for interface cards. The fixing device includes a seat. A plurality of spacers are installed on one surface of the seat. Several teeth are formed on the top end of the spacer, while the lower portion thereof is installed with a holding device. Furthermore, a sliding block is installed and is slidably engaged on the top portion of the spacer. The sliding block is formed with teeth respectively engaged with the teeth of the spacer. Therefore, the fixing device can be buried within the casing of a computer mainframe in respective alignment with one side of the circuit board inserting slot within the computer mainframe. Accordingly, when an interface card is required to be inserted into a slot, the sliding block moves upwards, the interface card then penetrates through the holding device, and is then inserted into the inserting slot of the circuit board. Thereafter, the sliding block moves downwards to rest against the top end of the interface card to fully fix the interface cards. Thus, by the structure of the present invention, a fixing device is provided that is suitable for all kinds of interface cards of different elevations to be fixed into a computer mainframe. As a result, assembly cost and labor hours are greatly reduced.
Another object of the present invention is to provide a fixing device for interface cards, where a movable block is installed on a sliding block. The movable block is formed with teeth for engagement with the teeth of the spacer. Thus, if an interface card is required to be inserted, the movable block can be moved firstly to disengage the teeth of the movable block from the teeth of the spacer. Thus, it can be easily displaced upwards and downwards.
A further object of the present invention is to provide a fixing device for interface cards, wherein two respective clamping pieces are installed on the holding device. The width of the two clamping pieces serves to clamp an interface card. One end of the fixing device for receiving an interface card has an enlarged portion, thus an interface card will be easily and conveniently inserted therein. Accordingly, as an interface card is inserted into a circuit board inserting slot, one side of the interface card first passes between the two clamping pieces, and then is further inserted into the circuit board slot to be clamped by the two clamping pieces.
Still another object of the present invention is to provide a fixing device for interface cards, wherein each of two sides of the spacer is installed with a respective convex pillar. Further, each side of the sliding block is formed with a respective long slot. The convex pillar is installed within the long slot so that the sliding block only moves within the extend of the long slot. As the sliding block is moved to the outside of the spacer, the sliding block will not wholly separate from the spacer. Meanwhile, the sliding block is moved backwards along the convex pillar in order to not hinder the insertion of the interface card.
The present invention will be better understood and its numerous objects and advantages will become apparent to those skilled in the art by referencing to the following drawing in which:


REFERENCES:
patent: 5090840 (1992-02-01), Cosenza
patent: 5383793 (1995-01-01), Hsu et al.
patent: 5706173 (1998-01-01), Carney et al.
patent: 5822197 (1998-10-01), Thuault
patent: 6022234 (2000-02-01), Shinoto et al.

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