# US 8,570,740 B2 · Electronic device with expansion cards

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- Number: US 8,570,740 B2
- Document ID: US8570740B2
- Status: Granted
- Kind: B2
- Application number: 13/282,479
- Filed: 2011-10-27
- Published: 2013-03-28
- Granted: 2013-10-29
- Earliest claimed: 2011-09-23
- Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.; Hon Hai Precision Industry Co., Ltd.
- Applicants: Wei-Dong Cong; Lei Liu
- Inventors: Wei-Dong Cong; Lei Liu
- Web page: https://patentgrep.com/patent/US8570740B2

## CPC

- G06F 1/20: Cooling means
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

An electronic device includes a circuit board with a number of expansion slots arranged on the circuit board for connecting a number of expansion cards, and a guiding member inserted in one idle expansion slot of the expansion slots for guiding airflow to the expansion cards at opposite sides of the idle expansion slot.

## Claims

### Claim 1

An electronic device comprising:
a circuit board comprising a plurality of expansion slots for connecting to a plurality of expansion cards, wherein at least one expansion slot is idle; and
a guiding member inserted into the at least one idle expansion slot, the guiding member comprising a guiding portion located in front of an end of the at least one expansion slot, for guiding airflow to flow to opposite sides of the at least one expansion slot.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the guiding portion has a substantially V-shaped cross-section.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the guiding member further comprises an inserting portion inserted into one of the at least one idle expansion slot, the guiding portion is formed from one end of the inserting portion.

### Claim 4 (depends on 3)

The electronic device of claim 3, wherein opposite ends of the inserting portion define two locking cutouts, two locking portions are formed at opposite ends of each of the at least one expansion slot to engage in the locking cutouts, respectively.

### Claim 5 (depends on 4)

The electronic device of claim 4, wherein the inserting portion comprises an L-shaped connecting piece extending up from the end of the inserting portion, the guiding portion is connected to the connecting piece.

### Claim 6 (depends on 5)

The electronic device of claim 5, wherein a space is defined between the guiding portion and the end of the inserting portion, for avoiding interference with the locking portion at the end of the corresponding idle expansion slot.

### Claim 7

An electronic device comprising:
a circuit board comprising a plurality of expansion slots for connecting to a plurality of expansion cards, wherein two expansion slots are idle; and
a guiding member comprising two inserting portions inserted into the idle expansion slots, respectively, and a guiding portion connected to corresponding ends of the inserting portions, for guiding airflow to flow to opposite sides of the idle expansion slots.

### Claim 8 (depends on 7)

The electronic device of claim 7, wherein the two idle expansion slots are adjacent.

### Claim 9

An electronic device comprising:
a circuit board comprising a plurality of expansion slots for connecting to a plurality of expansion cards, wherein three expansion slots are idle; and
a guiding member comprising two inserting portions inserted into two outside idle expansion slots, respectively, and a guiding portion connected to corresponding ends of the inserting portions, for guiding airflow to flow to opposite sides of the idle expansion slots.

### Claim 10 (depends on 9)

The electronic device of claim 9, wherein the three idle expansion slots are adjacent.