Sliding rail structure and server cabinet

1. A sliding rail structure comprising:

a rail assembly comprising a rail member, the rail member comprising at least one first limiting portion and at least one second limiting portion, each of the at least one first limiting portion defining a first limiting hole, and each of the at least one second limiting portion defining a second limiting hole communicating with the corresponding first limiting hole; and

a buckle rotatably connected to the rail assembly and comprising at least one hook, each of the at least one hook passing through the first limiting hole to be positioned the second limiting hole, the hook being rotatable in the corresponding second limiting hole when the buckle rotates wherein the rail assembly further comprises an elastic member and a rotating shaft, the rotating shaft is fixed to the rail member, the elastic member is sleeved on the rotating shaft and resists the rail member and the buckle.

2. The sliding rail structure of claim 1 , wherein the rail member further defines an accommodating groove, the elastic member is partially positioned in the accommodating groove and resists the rail member, the buckle defines two locking slots, two ends of the elastic member are placed in the two locking slots and resist the buckle.

3. The sliding rail structure of claim 1 , wherein the rail member defines a through hole, the buckle comprises a pressing portion, one end of the pressing portion abuts a side of the rail member adjacent to the hook, the pressing portion is partially positioned in the through hole.

4. The sliding rail structure of claim 3 , wherein the rail member comprises a sliding rail and a connecting member fixed to an end of the sliding rail, the connecting member comprises a base plate parallel to an extending direction of the sliding rail and two spaced fixing pieces protruding on the base plate, the through hole is defined on the base plate.

5. The sliding rail structure of claim 4 , wherein the second limiting portion comprises a base portion and an extension portion, the base portion defines a first hole and the extension portion defines a second hole, the hook comprises a first hook and a second hook, the first hook is farther from the base plate than the second hook, the first hook is positioned in the first hole, and the second hook is positioned in the second hole.

6. The sliding rail structure of claim 3 , wherein the rail member comprises a sliding rail and a connecting member fixed to an end of the sliding rail, the connecting member comprises a base plate perpendicular to an extending direction of the sliding rail, and the first limiting portion and the second limiting portion both fixed on the base plate, the through hole is defined on the sliding rail.

7. The sliding rail structure of claim 6 , wherein the sliding rail comprises a sliding plate, two limiting pieces perpendicular to two edges of the sliding plate, and a fixing member between the two limiting pieces, the buckle is connected between the two limiting pieces, the connecting member is fixed on the fixing member.

8. The sliding rail structure of claim 7 , wherein the fixing member comprises a first fixing portion protruding from the sliding plate and two second fixing portions extending from the two limiting pieces toward each other, the two second fixing portions are spaced from the sliding plate, the connecting member is connected to the first fixing portion and the two second fixing portions.

9. The sliding rail structure of claim 1 , wherein the rail member comprises two first limiting portions and two second limiting portions, the buckle comprises two hooks, the rail member further comprises a third limiting portion disposed between the two second limiting portions.

10. A server cabinet comprising:

a fixing plate defining at least one restriction hole;

a rail assembly comprising a rail member, the rail member comprising at least one first limiting portion and at least one second limiting portion, each of the at least one second limiting portion passing through one of the at least one restriction hole and being disposed on a first side of the fixing plate, the at least one first limiting portion being disposed on a second side of the fixing plate opposite to the first side, each of the at least one first limiting portion defining a first limiting hole, and each of the at least one second limiting portion defining a second limiting hole communicating with the corresponding first limiting hole; and

a buckle rotatably connected to the rail assembly and comprising at least one hook, each of the at least one hook passing through one of the first limiting hole to abut the first side and disengaging from the first side when the buckle rotates a preset angle.

11. The server cabinet of claim 10 , wherein the rail assembly further comprises an elastic member and a rotating shaft, the rotating shaft is fixed to the rail member, the elastic member is sleeved on the rotating shaft and resists the rail member and the buckle.

12. The server cabinet of claim 11 , wherein the rail member further defines an accommodating groove, the elastic member is partially positioned in the accommodating groove and resists the rail member, the buckle defines two locking slots, two ends of the elastic member are placed in the two locking slots and resist the buckle.

13. The server cabinet of claim 10 , wherein the rail member defines a through hole, the buckle comprises a pressing portion, one end of the pressing portion abuts a side of the rail member adjacent to the hook, the pressing portion is partially positioned in the through hole.

14. The server cabinet of claim 13 , wherein the rail member comprises a sliding rail and a connecting member fixed to an end of the sliding rail, the connecting member comprises a base plate parallel to an extending direction of the sliding rail and two spaced fixing pieces protruding on the base plate, the through hole is defined on the base plate.

15. The server cabinet of claim 14 , wherein the second limiting portion comprises a base portion and an extension portion, the base portion defines a first hole and the extension portion defines a second hole, the hook comprises a first hook and a second hook, the first hook is farther from the base plate than the second hook, the first hook is positioned in the first hole, and the second hook is positioned in the second hole.

16. The server cabinet of claim 13 , wherein the rail member comprises a sliding rail and a connecting member fixed to an end of the sliding rail, the connecting member comprises a base plate perpendicular to an extending direction of the sliding rail, and the first limiting portion and the second limiting portion both fixed on the base plate, the through hole is defined on the sliding rail.

17. The server cabinet of claim 16 , wherein the sliding rail comprise s a sliding plate, two limiting pieces perpendicular to two edges of the sliding plate, and a fixing member between the two limiting pieces, the buckle is connected between the two limiting pieces, the connecting member is fixed on the fixing member.

18. The server cabinet of claim 17 , wherein the fixing member comprises a first fixing portion protruding from the sliding plate and two second fixing portions extending from the two limiting pieces toward each other, the two second fixing portions are spaced from the sliding plate, the connecting member is connected to the first fixing portion and the two second fixing portions.

19. The server cabinet of claim 10 , wherein the rail member comprises two first limiting portions and two second limiting portions, the buckle comprises two hooks, the rail member further comprises a third limiting portion disposed between the two second limiting portions, the third limiting portion is connected to the fixing plate.