Clamping device for being connected to frame of bicycle carry rack
A clamping device for a bicycle carry rack includes a tube with a first clamp unit and a second clamp unit respectively located on two ends thereof. A fastening unit includes a pin which is connected between the first and second clamp units. The first clamp unit includes a clamping slot and an entrance which communicates with the clamping slot. The entrance guides the frame of a bicycle carry rack into the clamping slot. The first clamp unit has a restriction recess for receiving a head of the pin, the other of the pin is threadedly connected to a knob. The head of the pin is removed from the restriction recess when the second clamp clamps, and the first clamp unit is pivotable relative to the pin, and to clamp the frame of the bicycle carry rack by its clamping slot via the entrance.
1. A clamping device for a bicycle carry rack, comprising:
a tube 30 , a first clamp unit 10 , a second clamp unit 20 and a fastening unit 40 , the first clamp unit 10 and the second clamp unit 20 respectively located on two ends of the tube 30 , an end member 31 connected to one end of the tube 30 ;
the fastening unit 40 having a pin 41 which includes a head 411 and a threaded end 412 respective formed on two ends thereof, the pin 41 extending through the first clamp unit 10 , the tube 30 , a spring 42 , the second clamp unit 20 and threadedly connected to a knob 43 by the threaded end 412 , the spring 42 connected to the second clamp unit 20 , the fastening unit 40 connected between the first and second clamp units 10 , 20 , and
the first clamp unit 10 being a C-shaped unit and including a clamping slot 12 and an entrance 11 which communicates with the clamping slot 12 , a notch 13 defined in the first clamp unit 10 and communicating with the entrance 11 , the clamping slot 12 of the first clamp unit 10 adapted to clamp a frame 50 of a bicycle carry rack via the entrance 11 , a pivotal portion 14 formed in the first clamp unit 10 and transversely located below the clamping slot 12 , the first clamp unit 10 being pivotable about the pivotal portion 14 , a receiving groove 15 defined in the first clamping unit 10 , a contact portion 16 formed between the clamping slot 12 and the receiving groove 15 , a restriction recess 17 defined in the first clamp unit 10 and located opposite to the receiving groove 15 , and the head 411 removably located in the restriction recess 17 .
2. The clamping device as claimed in claim 1 , wherein the spring 42 is separated from the end member 31 by clamping the second clamp unit 20 , and the tube 30 travels a distance so that the head 411 on the pin 41 is separated from the restriction recess 17 , the first clamp unit 10 is pivoted and the contact portion contacts the tube 30 , the clamping slot 12 is adapted to clamp the frame 50 of the bicycle carry rack via the entrance 11 , and the pin 41 is engaged with the notch 13 , the second clamp unit 20 is released to force the head 411 on the pin 41 to be engaged with the restriction recess 17 .
3. The clamping device as claimed in claim 1 , wherein the clamping slot 12 includes a ridged portion 121 which is adapted to clamp the frame 50 of the bicycle carry rack.
4. The clamping device as claimed in claim 1 , wherein the clamping slot 12 includes ridged portion 121 on which a pad is put which is adapted to contact the frame 50 of the bicycle carry rack.
5. The clamping device as claimed in claim 1 , wherein a guide portion 122 is formed at connection area between the clamping slot 12 and the entrance 11 , the guide portion 122 is adapted to guide the frame 50 of the bicycle carry rack into the clamping slot 12 .