Screwdriver having release mechanism

• US 7,051,626 B1
• Filed: 02/05/2005
• Issued: 05/30/2006
• Est. Priority Date: 02/05/2005
• Status: Expired due to Fees

• Current Assignee: Siou R.U. Chen, Su Fen Lin, Yi Ying Chen
• Original Assignee: Siou R.U. Chen, Su Fen Lin, Yi Ying Chen
• Inventors: Lin, Su Fen, Chen, Siou Ru, Chen, Yi Ying
• Primary Examiner(s): Thomas, David B.
• Assistant Examiner(s): MULLER, BRYAN R
• Application Number:
  US11/051,366
• Time in Patent Office: 479 Days
• Field of Search: 814/38, 814/90, 814/92, 814/39, 811/774, 811/771, 811/772, 403/290, 403/326, 403/329
• US Class Current: 81/438
• CPC Class Codes: B25G 1/085 for screwdrivers, wrenches or spanners
• CPC Class Codes: Y10T 403/535 with separate force-applying means

Abstract

A screwdriver includes a main body, an end cap, a holding seat, and a release mechanism. Thus, the holding seat and the end cap are removed from the main body easily and rapidly, thereby facilitating the user taking or placing the tips mounted in the mounting holes of the holding seat. In addition, the user only needs to press the push button of each of the two push button sets of the release mechanism so as to detach the holding seat and the end cap from the main body, thereby facilitating the user removing the holding seat and the end cap from the main body.

Claims

1. A screwdriver, comprising a main body, an end cap mounted on the main body, and a release mechanism mounted between the main body and the end cap and including:

an axial spring axially mounted in the main body and biased between the main body and the end cap;

at least one push button set mounted on the main body and including a push button and a restoring spring;

at least one locking hook having a first end mounted on the end cap and a second end detachably locked in the main body and contacting with the push button of the at least one push button set;

wherein, the push button of the at least one push button set is movable to push and detach the second end of the at least one locking hook from the main body to release the end cap from the main body, so that the end cap is pushed by an elastic force of the axial spring to move outward relative to the main body.

2. The screwdriver in accordance with claim 1, wherein the push button has a protruding push post, the restoring spring is mounted on an outside of the push post and biased between the push button and the main body, and the second end of the at least one locking hook contacts with the push post of the push button.

3. The screwdriver in accordance with claim 1, wherein the main body has at least one mounting hole for mounting the at least one push button set, and the second end of the at least one locking hook is detachably locked in the at least one mounting hole of the main body.