Hand puller with a structure of double stopping plates

Abstract

A hand puller with the structure of double stopping plates is disclosed. An axle part goes through a fixing part and a pulling part. Both ends of the axle part have a ratchet, respectively. The fixing part has two stopping plates, fixed to the two opposite sides of the axle part. The pulling part has a driving claw. The driving claw and the stopping plates of the fixing part engage with the ratchet.

What is claimed is: 
     
         1 . A hand puller having the structure of double stopping plates, comprising:
 a fixing part having stopping plates;   a pulling part having a driving claw;   an axle part going through the fixing part and the pulling part, with a ratchet on each of its two ends;   wherein the stopping plates are disposed on the two opposite sides of the axle part, respectively; when the driving claw rotates the ratchet, the stopping plate on one side of the ratchet engages with the bottom part of a tooth of the ratchet and the stopping plate on the opposite side urges against the top part of the tooth of the ratchet; the two stopping plates perform a reciprocal motion between the bottom part and the top part of the teeth; the fixing part has a guiding section at the axle part for the end of the driving claw to urge against; the guiding section has a stopping wall at the end of its stroke for the driving claw to urge and stop; a positioning groove is formed in the upper portion of the stopping wall; and a sliding groove is formed between the positioning groove and the guiding section; the driving claw rotates the ratchet during the stroke of the guiding section and urges against the stopping wall when fully pulled; the driving claw departs from the ratchet when it is pulled up and disposed into the positioning groove; two protruding parts are formed corresponding to the two stopping plates on the pulling part at the joint to the axle part; and when the driving claw moves back and forth in the sliding groove, the two protruding parts push away the corresponding stopping plates so that the teeth of the ratchet back out the strap tooth by tooth.   
     
     
         2 . The hand puller having the structure of double stopping plates as in  claim 1 , wherein the fixing part has two sets of through holes in the back that are in communication when the two fixing parts of two hand pullers are connected, and two sets of locking elements go through the through holes to join the hand pullers. 
     
     
         3 . The hand puller having the structure of double stopping plates as in  claim 1 , wherein the fixing part and the pulling part are connected in a fixed way.