Clamp structure for use on different diameter bars

Abstract

A clamp structure for use on different diameter bars mainly structured to include upper clamp pieces, lower clamp pieces, a set of first spacers and a set of second spacers, wherein joining portions and through holes are located on the upper clamp pieces, and embedding grooves are defined in bottom edges of the upper clamp pieces. Corresponding positions of the lower clamp pieces are similarly disposed with through holes and binding embedding grooves. Clamping spaces are thus formed between the upper clamp pieces and the lower clamp pieces after lining the joining portions with the first spacers, which enable clamping a bar of relatively large diameter. Moreover, clamping spaces formed between the upper clamp pieces and the lower clamp pieces after additionally lining the joining portions with the second spacers enable clamping a bar of relatively small diameter.

1 . A clamp structure for use on different diameter bars, comprising:
 relatively configured upper clamp pieces and lower clamp pieces, wherein arc recesses are respectively formed in mutually close surfaces of the upper clamp pieces and the lower clamp pieces, a shaft fitting end provided with a shaft hole is configured at an end of each of the upper clamp pieces, and a another end of each of the upper clamp pieces is configured with a joining end provided with a long bolt hole; shaft pins are used to respectively pin join the shaft holes and corresponding shaft holes of the lower clamp pieces, thereby joining the upper clamp pieces to the lower clamp pieces;   embedding grooves are respectively defined in arc recess sections between the upper clamp pieces and the lower clamp pieces, which enable first spacers to embed therein;   a set of first spacers, a top surface of each of which is defined with at least one embedding hole, and protruding posts are located on a bottom portion of each of the first spacers, which function in coordination with binding embedding grooves of the upper clamp pieces and the lower clamp pieces;   a set of second spacers, which function in coordination with the embedding grooves of the first spacers, and protruding posts are located on a back surface of each of the second spacers;   whereby bolts are used to penetrate long bolt holes of the upper clamp pieces, and nuts are tightened down on ends of the bolts after penetrating the long bolt holes, thereby forming clamp structures after joining the upper clamp pieces to the lower clamp pieces, moreover the first spacers and the second spacers enable adjusting clamping space formed by the clamp structures, thus facilitating joining to different diameter bars.   
   
   
       2 . The clamp structure for use on different diameter bars according to  claim 1 , wherein embedding holes are defined in the embedding grooves defined in the upper clamp pieces and the lower clamp pieces, thereby enabling the protruding posts located on the bottom portions of the first spacers to respectively embed into the embedding holes. 
   
   
       3 . The clamp structure for use on different diameter bars according to  claim 1 , wherein the clamp structures formed by the upper clamp pieces and the lower clamp pieces is joined to a clamp base, and a joining piece disposed on a front end of the joining base enables indirectly fixedly connecting to a backpack. 
   
   
       4 . A clamp structure for use on different diameter bars, comprising:
 a joining bottom plate, a surface of which is defined with a plurality of clasp grooves, and joining holes and concavities are defined on two sides and bottom edges of the joining bottom plate respectively;   a plurality of retaining members, a side of each of which is defined with joining holes, and another side has at least one embedding groove;   a plurality of first spacers, a bottom portion of each of which is provided with protruding posts, and embedding holes are defined in a top portion of each of the first spacers; the protruding posts are able to embed into the embedding grooves of the retaining members;   a plurality of second spacers, a bottom portion of each of which is provided with protruding posts, which are able to embed into the embedding holes of the first spacers;   whereby when the joining bottom plate is disposed on a rear carrier of a bicycle, the concavities are aligned and disposed on bars of the rear carrier, and then the retaining members disposed with the first spacers are attached to the bars of the rear carrier, whereupon bolts are used to penetrate through the joining holes of the joining bottom plate and joining holes of the retaining members, whereafter nuts are respectively bolted down tight thereon, thereby forming clamp structures.   
   
   
       5 . The clamp structure for use on different diameter bars according to  claim 1 , wherein the second spacers are respectively disposed on upper surfaces of the first spacers, thereby enabling the protruding posts on the back surfaces of the second spacers to embed into embedding grooves of the first spacers.