Shoe attachment device

Abstract

A shoe attachment device comprises an attachment element and an attachment base. The attachment element is connected to a vamp or a heel strap. The attachment base is embedded in the sole, and includes an insertion slot into which the attachment element inserts to attach the vamp or the heel strap to the sole. The insertion slot includes an inner blocking member onto which an arcuate groove is defined. The engagement tooth engages the arcuate groove to attach the attachment element to the attachment base. A guiding lip is further formed in the insertion slot to engage a corresponding stop slot.

What is claimed is:  
     
         1 . A shoe attachment device, mounted onto a shoe having at least a sole, a vamp, and a heel strap, the attachment device comprising: 
 an attachment element connected to the vamp or the heel strap, including at least an insertion tongue on which at least an engagement tooth is formed; and    an attachment base embedded into the sole, including an insertion slot into which the attachment element inserts to attach the vamp or the heel strap, the insertion slot including an inner blocking member onto which an arcuate groove is defined, thereby the engagement tooth engages the arcuate groove to attach the attachment element to the attachment base, wherein a gap is left between a top portion of the engagement tooth and the arcuate groove once the engagement tooth is engaged with the arcuate groove.    
     
     
         2 . The shoe attachment device of  claim 1 , wherein a plurality of attachment ears are respectively formed on a left side and a right side of the attachment base.  
     
     
         3 . The shoe attachment device of  claim 1 , wherein a guiding lip is further placed within the insertion slot to engage with a stop slot defined on the insertion tongue.