Tip replacement structure for riveter

Abstract

A construction support structure contains: a plurality of first hollow posts, plural second hollow posts, and at least one platform. Each first hollow post includes at least one groove, and each groove has a first width section and a first narrow section, wherein a horizontal width of the first width section is more than the first narrow section. Each second hollow post includes two locking protrusions, and a distance between two sides of each locking protrusion is more than a distance between a top end and a bottom end of each locking protrusion, wherein each locking protrusion has a connecting section, a diameter of which is less than the distance between the two sides of each locking protrusion and the distance between the top end and the bottom end of each locking protrusion, and the connecting section corresponds to the first narrow section of each first hollow post.

What is claimed is: 
     
         1 . A tip replacement structure for a riveter comprising: a griping assembly and a nail pulling unit; wherein
 the griping assembly includes a first handle, a second handle rotatably connected with the first handle, a returning spring fitted between the first handle and the second handle, a connection rod, a positioning plate, and a gasket fixed between the first handle and the positioning plate to form a clamping space between the first handle and the positioning plate, wherein a first end of the connection rod is rotatably connected with an inner surface of the second handle, and a second end of the connection rod has a driving section extending out of the first handle, the gasket, and the positioning plate, wherein the driving section has two retaining discs formed on a top end and a bottom end thereof, and a diameter of the two retaining discs is greater than that of the driving section;   the nail pulling unit includes a holder, a pull bolt, and an actuation member, wherein the holder has two ribs extending outwardly from two inner sides of a bottom end thereof and slidably retained in the clamping space, the holder also has an accommodation chamber defined therein to insert the driving section, wherein the holder further has an open side and a hollow tube extending outwardly from a top end thereof and communicating with the accommodation chamber, such that a front part of the pull bolt is fitted into the hollow tube, and a rear part of the pull bolt is accommodated in the accommodation chamber; and   the pull bolt has two drive slots formed on two side surfaces of the rear part thereof, the actuation member has an intermediate portion rotatably coupled with the accommodation chamber, a first engagement section arranged on a first end thereof to insert across two sides of the driving section and defined between the two retaining discs, and a second engagement section formed on a second end thereof to insert across the two drive slots of the two sides of the pull bolt.   
     
     
         2 . The tip replacement structure for the riveter as claimed in  claim 1 , wherein two protrusions extend outwardly from two inner surfaces of the accommodation chamber, and a width of a gap between the two protrusions is less than the diameter of the two retaining discs.