Hinge without shaft and method for producing the same
The present invention relates to a shaftless hinge comprising two hinge plates where shaft bushes are disposed on confronting sides of the two hinge plates; each of the shaft bushes on one of the hinge plates is disposed with an extension section at one end thereof; the extension section inserts into and pivotally articulated with one of the shaft bushes of an other one of the hinge plates respectively. The present invention also relates to a manufacturing method of the shaftless hinge, comprising the following steps: (1) Form blanks of two hinge plates on a flat strip material by punching, where shaft bush sections with projections are formed on one of them and shaft bush sections are formed on an other one; (2) Curl the shaft bush sections of one hinge plate first to form shaft bushes with extension sections and the extension sections are formed from the projections in Step (1); fold the two hinge plates towards each other so that the substantially cylindrical extension sections of the curled shaft bushes are positioned towards the shaft bush sections on the other hinge plate; (3) Curl the shaft bush sections of the other hinge plate so that shaft bushes are formed; the shaft bushes enclose the extension sections in Step (2). The present invention has simple and reasonable structure and is safe and reliable to use. The manufacturing process of the present invention is simple with high processing accuracy and low costs.
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Junwei
Li