Video recorder

1. A video recorder comprising:

a case body comprising a space for housing a plurality of electronic parts, the plurality of electronic parts comprising:

an optical disk drive (ODD) holder attached to an ODD; and

a hard disk drive (HDD) holder attached to an HDD;

a front panel on which a front printed circuit board (PCB) is mounted and which covers a front side of the case body, the front panel comprising:

a cover on which the front PCB is mounted; and

a door configured to expose or close the cover based on rotation of the door with respect to the case body; and

a rear panel on which a rear PCB is mounted and which covers a rear side of the case body,

wherein the cover comprises:

an insertion groove; and

an extension groove radially cut along a part of an outer circumferential surface of the insertion groove, and

wherein the door comprises:

an insertion protrusion configured to be inserted into the insertion groove; and

an extension protrusion protruding radially from an outer circumferential surface of the insertion protrusion.

2. The video recorder of claim 1 , wherein the ODD and the HDD are detachably attached to the ODD holder and the HDD holder, respectively.

3. The video recorder of claim 1 , wherein the case body and the front panel are coupled to each other by a snap-fit structure, and the case body and the rear panel are coupled to each other by the snap-fit structure.

4. The video recorder of claim 3 , wherein the snap-fit structure comprises a hook and a hook groove, and

wherein one of the hook and the hook groove is provided on one of the case body and the front or rear panel, and the other of the hook and the hook groove is provided on the other of the case body and the front or rear panel.

5. The video recorder of claim 1 , wherein plurality of electronic parts further comprises:

a switching mode power supply (SMPS) configured to be slid into the case body; and

a fan holder having a detachable fan and configured to be slid into the case body.

6. The video recorder of claim 5 , wherein the case body comprises:

a guide hook configured to guide sliding of the SMPS and configured to support the SMPS on a front portion of the SMPS;

supports configured to guide sliding of the SMPS and support the SMPS on side portions of the SMPS; and

a stopper configured to fix the SMPS on a top surface of the SMPS.

7. The video recorder of claim 5 , wherein the case body comprises hook grooves, and the fan holder comprises holder fixing hooks,

wherein the holder fixing hooks are configured to be inserted into the hook grooves.

8. The video recorder of claim 7 , wherein the fan holder further comprises fan fixing hooks configured to fix the fan to the fan holder.

9. The video recorder of claim 1 , wherein the ODD holder comprises:

ODD holder hooks; and

press pins;

wherein the case body comprises hook grooves, the ODD holder hooks configured to be inserted into the hook grooves, and

wherein the press pins are coupled to grooves provided on side surfaces of the ODD.

10. The video recorder of claim 1 , wherein the HDD holder providing a space for housing the HDD and comprising:

fixing protrusions configured to fix the HDD inside the space; and

fastening holes configured to receive fasteners to fasten the HDD holder to the case body.

11. The video recorder of claim 10 , wherein the fastening holes are provided on side surfaces of the HDD holder.

12. The video recorder of claim 10 , wherein the HDD holder further comprises a guide configured to guide installation of the ODD,

wherein the ODD is configured to be installed on and connected to the HDD holder by the guide, and

wherein the HDD holder and the ODD holder are configured to be slidable as a single holder into the case body.

13. The video recorder of claim 10 , wherein the HDD holder comprises an HDD holder hook provided on a front side thereof.

14. The video recorder of claim 13 , wherein the HDD holder further comprises an HDD holder auxiliary hook provided on a rear side of the HDD holder and configured to be coupled to a frame of the case body.

15. The video recorder of claim 1 , wherein the front panel comprises guide ribs configured to couple the front PCB with the front panel in a snap-fit manner.

16. The video recorder of claim 1 ,

wherein in response to the rotation of the door, the extension protrusion rotates along an outer circumferential surface of the extension groove, a radial end of the extension protrusion contacts the extension groove, and the contact between the radial end of the extension protrusion and the extension groove generates friction.

17. The video recorder of claim 1 , wherein the rear panel comprises a plurality of brackets configured to fix the rear PCB.

18. The video recorder of claim 1 , wherein the rear panel comprises a rear holder configured to support the rear PCB coupled to the rear panel in a snap-fit manner.