Cross bar assembly and roof rack

1 . A cross bar assembly, comprising

a first connecting structure,

a second connecting structure, and

a connecting portion,

wherein one end of the first connecting structure is configured to be connected to a roof guide rail, another end of the first connecting structure is connected to one end of the second connecting structure in a lockable manner, and another end of the second connecting structure is axially provided with a hole, one end of the connecting portion is connected in the hole;

wherein the first connecting structure comprises a lock and the second connecting structure comprises a connecting hole; the first connecting structure is connected to the second connecting structure by an engagement between the lock and the connecting hole; the hole and the connecting hole are formed in a one-piece structure of the second connecting structure.

2 . The cross bar assembly according to claim 1 , wherein the first connecting structure further comprises a key, and the first connecting structure is connected to the second connecting structure in a lockable manner by the lock and the key.

3 . The cross bar assembly according to claim 2 , wherein the lock comprises a lock hole, a lock core, and a lock tongue, the lock core is mounted in the lock hole, the lock tongue is connected to the lock core and is in linkage with the lock core, and the lock tongue is connected to the connecting hole, when the lock tongue is engaged with the connecting hole, the first connecting structure is locked onto the second connecting structure, and when the lock tongue is disengaged from the connecting hole, the first connecting structure is unlocked from the second connecting structure.

4 . The cross bar assembly according to claim 1 , wherein the first connecting structure is detachably connected to the roof guide rail.

5 . The cross bar assembly according to claim 4 , wherein the first connecting structure comprises a cover and a fixing member, and two ends of the fixing member are detachably connected to the cover and the roof guide rail respectively, so that the first connecting structure can be detachably connected to the roof guide rail.

6 . The cross bar assembly according to claim 5 , wherein the fixing member comprises a head portion and a tail portion, the cover is provided with a through-hole, the head portion is located at a side of the cover away from the roof guide rail, the size of the head portion is greater than the diameter of the through-hole and thus the head portion cannot pass through the through-hole, the size of the tail portion is smaller than the diameter of the through-hole and thus the tail portion can pass through the through-hole, the tail portion passes through the through-hole and is detachably connected to the roof guide rail, and the fixing member connects the cover to the roof guide rail detachably.

7 . The cross bar assembly according to claim 1 , wherein the second connecting structure is movably connected to the connecting portion.

8 . The cross bar assembly according to claim 7 , wherein a number of both the first connecting structure and the second connecting structure is two, a number of the roof guide rail is also two, and the two first connecting structures are correspondingly connected to the two roof guide rails respectively, the two first connecting structures are connected to the two second connecting structures respectively in a lockable manner, and the connecting portion is provided between the two first connecting structures, and two ends of the connecting portion are respectively connected to the two second connecting structures.

9 . The cross bar assembly according to claim 8 , wherein each of the two second connecting structures comprises a first adjustment structure, two ends of the connecting portion are provided with a second adjustment structure at a position corresponding to the first adjustment structure, and the first adjustment structure is slidably connected to the second adjustment structure.

10 . A roof rack, comprising the cross bar assembly of claim 1 and the roof guide rail, wherein the cross bar assembly is connected to the roof guide rail.

11 . The cross bar assembly according to claim 1 , wherein the second connecting structure comprises a first adjustment structure, the connecting portion comprises a second adjustment structure, the first adjustment structure is slidably connected to the second adjustment structure; two ends of the second adjustment structure stop the first adjustment structure from further sliding, such that the first adjustment structure is limited to slide in the second adjustment structure.

12 . The cross bar assembly according to claim 11 , wherein the first adjustment structure is an adjustment bolt, the second adjustment structure is a strip-shaped groove, the adjustment bolt being slidably received in the strip-shaped groove.