Bike carrying device

1. A bike carrying device, comprising:

a support post;

a mounting unit mounted on the support post;

a positioning bar mounted on the mounting unit;

a pawl member mounted in the mounting unit;

a release member mounted in the mounting unit;

a lock mechanism mounted on the mounting unit and connected with the release member; and

an elastic member biased between the mounting unit and the pawl member;

wherein:

the support post has a side provided with a plurality of locking grooves;

the mounting unit includes:

a front shell;

a rear shell combined with the front shell; and

two mounting bases mounted on the rear shell;

each of the mounting bases of the mounting unit has a side provided with a pivot groove;

the pawl member has a lower end pivotally mounted between the mounting bases of the mounting unit and has an upper end provided with a locking hook releasably locked onto one of the locking grooves of the support post so as to lock the mounting unit onto the support post;

the lower end of the pawl member has two opposite sides each provided with a pivot stub pivotally mounted in the pivot groove of a respective one of the mounting bases so that the lower end of the pawl member is pivotally mounted between the mounting bases of the mounting unit, and the pawl member is pivotable relative to the mounting bases of the mounting unit;

the release member has an upper end secured on the lock mechanism to rotate in concert with the lock mechanism and has a lower end provided with a resting plate that is movable to abut the pawl member;

the resting plate of the release member has a side provided with a pressing ramp that is movable to press the locking hook of the pawl member so as to move and detach the locking hook of the pawl member from one of the locking grooves of the support post and to unlock the mounting unit from the support post; and

the resting plate is arranged between the pawl member and the support post.

2. The bike carrying device of claim 1 , wherein the rear shell of the mounting unit has an interior provided with a receiving space to receive the lock mechanism, the release member and the pawl member.

3. The bike carrying device of claim 1 , wherein

the mounting unit further includes a retaining flange mounted on the rear shell for mounting the elastic member;

the upper end of the pawl member has a surface provided with a retaining lug for mounting the elastic member;

the elastic member has a first end secured on the retaining flange of the mounting unit and a second end secured on the retaining lug of the pawl member.

4. The bike carrying device of claim 3 , wherein the retaining lug and the locking hook are located at two opposite sides of the pawl member.

5. The bike carrying device of claim 4 , wherein the locking hook of the pawl member is pushed toward one of the locking grooves of the support post by an elastic force of the elastic member.

6. The bike carrying device of claim 1 , wherein

each of the mounting bases of the mounting unit has a surface provided with a screw bore;

the bike carrying device further comprises:

two washers each mounted on a respective one of the mounting bases and each abutting the respective pivot stub of the pawl member to limit the respective pivot stub of the pawl member in the pivot groove of the respective mounting base and to limit the pawl member between the mounting bases of the mounting unit; and

two fastening screws each extended through a respective one of the washers and each screwed into the screw bore of a respective one of the mounting bases to affix the washers to the mounting bases of the mounting unit respectively.

7. The bike carrying device of claim 1 , wherein

the front shell of the mounting unit has a side provided with a first opening to allow passage of the positioning bar, and provided with a first slot to allow passage of the support post;

the rear shell of the mounting unit has a side provided with a second opening juxtaposed to the first opening to allow passage of the positioning bar, and provided with a second slot juxtaposed to the first slot to allow passage of the support post.

8. The bike carrying device of claim 1 , wherein the lock mechanism is extended through the rear shell of the mounting unit.

9. The bike carrying device of claim 2 , wherein the lock mechanism is rotatably mounted in the receiving space of the rear shell.