Patent ID: 9180579
Filing Date: 2015-11-10
Classification: B25B,B25G

Abstract:
1. A combination screwdriver, comprising: a handle having a receiving chamber; a fixed plate secured in the receiving chamber of the handle; a push button movably mounted in the receiving chamber of the handle; a compression spring mounted in the receiving chamber of the handle and biased between the fixed plate and the push button; a tool holder movably mounted in the receiving chamber of the handle; and a restoring spring mounted in the receiving chamber of the handle and biased between the fixed plate and the tool holder; wherein: the handle has a side provided with a socket unit; the fixed plate is provided with a through hole and two slots; the fixed plate is provided with two limit posts each disposed between the through hole and a respective one of the slots; the push button is made of a plastic material; the push button has a first end provided with a pressing portion and a second end provided with two limit hooks and two positioning hooks; each of the positioning hooks of the push button has a distal end provided with a locking portion; each of the positioning hooks of the push button is provided with an thrust portion; the thrust portion of each of the positioning hooks has a tapered shape; the tool holder has a shank provided with a plurality of mounting seats for mounting a plurality of tips; the tool holder has a first end provided with a grip portion and a second end provided with an abutting portion; the abutting portion of the tool holder has a side provided with a locking knob releasably clamped between the positioning hooks of the push button; the compression spring is biased between the fixed plate and the pressing portion of the push button; and the restoring spring is biased between the fixed plate and the abutting portion of the tool holder.