Reinforcing Bar Locking Device

Abstract

A reinforcing bar locking device that can be easily locked at a position relatively far from an end portion of a reinforcing bar and apply a strong locking force to the reinforcing bar. The reinforcing bar ( 10 ) has a body member ( 11 ) having a through hole ( 11 a ) in which the reinforcing bar is insertable and also has a pair of fitting members ( 12 ) fitted between the reinforcing bar inserted into the through hole ( 11 a ) and the inner peripheral surface of the through hole ( 11 a ). The inner peripheral surface ( 11 b ) of the through hole ( 11 a ) is of a funnel shape whose diameter is reduced in the direction of the center axis (C). A female screw thread part ( 12 a ) with which the reinforcing bar engages is formed on the inner peripheral surface of the fitting member ( 12 ). The outer peripheral surface ( 12 b ) of the fitting member ( 12 ) is a conical surface that has surface contact with the inner peripheral surface ( 11 b ) of the body member ( 11 ). On the outer periphery of the body member ( 11 ), a substantially cylindrical inserting section ( 11 c ) and a flange section ( 11 d ) having a larger diameter than the inserting section ( 11 c ) are provided. Each of the fitting members ( 12 ) has a slit ( 12 c ) opened in the direction of the center axis (C) of the through hole ( 11 a ).

1 . A reinforcing bar locking device comprising:
 a body member having a through hole in which a reinforcing bar is insertable;   a plurality of fitting members which are fitted between the reinforcing bar inserted into the through hole and an inner peripheral surface of the through hole, the inner peripheral surface of the through hole having a funnel shape whose diameter is reduced in a direction of a center axis;   an engaging section which engages with the reinforcing bar formed on an inner peripheral surface of the fitting members; and   a conical surface which has surface contact with the inner peripheral surface of the body member formed on at least a part of an outer peripheral surface of the fitting members.   
   
   
       2 . The reinforcing bar locking device according to  claim 1 , wherein the engaging section is a female screw thread part provided on the inner peripheral surface of the fitting members, the female screw thread part being screwed onto a male screw part formed on an outer peripheral surface of the reinforcing bar. 
   
   
       3 . The reinforcing bar locking device according to  claim 1 , wherein the fitting members have a slit opened in the direction of the center axis of the through hole. 
   
   
       4 . The reinforcing bar locking device according to  claim 1 , wherein the body member has at least a pair of flat parts arranged in parallel with each other on opposite sides of the center axis of the through hole on an outer periphery of the body member.