Wrist mounting type portable apparatus

Abstract

To provide a wrist mounting type portable apparatus capable of being mounted and detached simply and capable of being adjusted simply to match to a size around the wrist. A wrist mounting type portable apparatus is comprised by a strap formed with adjust portions of a small pitch having a section in a length direction in a sawtooth-like shape and a section in a width direction in a rectangular shape, and adjust mechanisms having sawtooth-like engaging portions normally brought in mesh with the adjust portions of the strap by being pulled in one direction by an elastic force and released of the mesh with the adjust portions of the strap by being pushed in an opposed direction against the elastic force by an operating portion in adjusting. The adjust portion is formed at a rear face of the strap by comprising a vicinity of a center thereof as a boundary and directions of inclining sawteeth made opposed to each other. Further, the adjust mechanisms are comprised by the first adjust mechanism 30 attached to a 12 o'clock position of a case of the portable apparatus and the second adjust mechanism attached to a 6 o'clock position thereof.

What is claimed is:  
     
         1 . A wrist mounting type portable apparatus comprising: 
 a strap formed a rear face of which is formed with an adjust portion of a pitch having a section in a length direction in a sawtooth-like shape and a section in a width direction in a rectangular shape by comprising a vicinity of a center thereof as a boundary and directions of inclining sawteeth made opposed to each other; and    an adjust mechanism having a sawtooth-like engaging portion normally brought in mesh with the adjust portion of the strap by being pulled in one direction by an elastic force and released of the mesh with the adjust portion of the strap by being pushed in an opposed direction against the elastic force by an operating portion in adjusting;    wherein the adjust mechanism comprises a first adjust mechanism attached to a 12 o'clock position of a case of the portable apparatus and a second adjust mechanism attached to a 6 o'clock position thereof.    
     
     
         2 . A wrist mounting type portable apparatus comprising: 
 a strap formed a rear face of which is formed with an adjust portion of a pitch having a section in a length direction in a sawtooth-like shape and a section in a width direction in a rectangular shape; and    an adjust mechanism having a sawtooth-like engaging portion normally brought in mesh with the adjust portion of the strap by being pulled in one direction by an elastic force and released of the mesh with the adjust portion of the strap by being pushed in an opposed direction against the elastic force by an operating portion in adjusting;    wherein the adjust mechanism is attached to either one of a 12 o'clock position and a 6 o'clock position of a case of the portable apparatus and a fixed end of the strap is fixedly attached to other of the 12 o'clock position and the 6 o'clock position of the case of the portable apparatus.    
     
     
         3 . A wrist mounting type portable apparatus according to  claim 1 , wherein the adjust mechanism comprises the operating portion, the sawtooth-like engaging portion, a connecting rod for connecting the operating portion and the sawtooth-like engaging portion and a spring normally pulling the sawtooth-like engaging portion in a direction of the case.  
     
     
         4 . A wrist mounting type portable apparatus according to  claim 2 , wherein the adjust mechanism comprises the operating portion, the sawtooth-like engaging portion, a connecting rod for connecting the operating portion and the sawtooth-like engaging portion and a spring normally pulling the sawtooth-like engaging portion in a direction of the case.  
     
     
         5 . A wrist mounting type portable apparatus according to  claim 1 , wherein the adjust mechanism comprises a push button having a long transverse length, a pair of connecting rods, one end of which are fixed to attaching portions at vicinities of both ends of the push button, stopper members which are stopper members each having a section having a long transverse length in a sawtooth-like shape and both ends of which are attached to other ends of the pair of connecting rods and springs normally pulling the stopper members in a direction of the case.  
     
     
         6 . A wrist mounting type portable apparatus according to  claim 2 , wherein the adjust mechanism comprises a push button having a long transverse length, a pair of connecting rods, one end of which are fixed to attaching portions at vicinities of both ends of the push button, stopper members which are stopper members each having a section having a long transverse length in a sawtooth-like shape and both ends of which are attached to other ends of the pair of connecting rods and springs normally pulling the stopper members in a direction of the case.  
     
     
         7 . A wrist mounting type portable apparatus according to  claim 1 , wherein the adjust portion of the pitch having the section in the length direction in the sawtooth-like shape is formed by being recessed from a surface of the strap.  
     
     
         8 . A wrist mounting type portable apparatus according to  claim 2 , wherein the adjust portion of the pitch having the section in the length direction in the sawtooth-like shape is formed by being recessed from a surface of the strap.  
     
     
         9 . A wrist mounting type portable apparatus according to  claim 1 , wherein the adjust portion of the pitch having the section in the length direction in the sawtooth-like shape is formed by being recessed from a surface of the strap and a strap end portion shift stopping portion of a pitch having a section in a length direction in a sawtooth-like shape is formed to project from a surface of the strap at a vicinity of one end portion of the strap.