Structure for rotating and locating screwdriver handle

• US 6,405,620 B2
• Filed: 06/14/2001
• Issued: 06/18/2002
• Est. Priority Date: 06/14/2000
• Status: Expired due to Fees

• Current Assignee: Sang-Yuan Liao
• Original Assignee: Sang-Yuan Liao
• Inventors: Liao, Sang-Yuan
• Primary Examiner(s): Hail, III, Joseph J.
• Assistant Examiner(s): Thomas, David B
• Application Number:
  US09/882,714
• Publication Number:
  US 20010052275A1
• Time in Patent Office: 369 Days
• Field of Search: 811/776, 811/777, 811/779, 814/89, 814/38, 814/40, 81/64
• US Class Current: 81/177.7
• CPC Class Codes: B25G 1/066 the grip itself being angularly adjustable

Abstract

A screwdriver comprises a handle which is provided with a head end portion and a grip portion pivoted with the head end portion. The head end portion has a pivoting block which is provided with an axial slide slot for receiving a slide block. A spring is disposed between the slide block and the axial slide slot. A press block is joined with the slide block such that the press block is put through an insertion hole extending through the axial slide slot. The grip portion is provided with a receiving space for accommodating a retaining plate having a plurality of toothed sots. The slide block is controlled by the press block to engage or disengage the toothed slots of the retaining plate, thereby adjusting and locating the application force angle of the grip portion.

Claims

1. A screwdriver rotating and locating structure, comprising:

a handle provided with a head end portion and a grip portion, said head end portion having one end which is provided with a shank, said head end portion having other end which is provided with a pivoting block, said grip portion provided with a recessed slot corresponding in location to said pivoting block, said recessed slot and said pivoting block being provided with a through hole, said pivoting block of said head end portion further provided with an axial slide slot which is in turn provided with an insertion hole, said grip portion being provided in a face thereof with a receiving space corresponding in location to said axial slide slot for accommodating a retaining plate having in one side thereof a plurality of toothed slots and a through hole, said head end portion, said grip portion, and said retaining plate being pivotally located by a locating rod whereby said locating rod is put through said through holes of said pivoting block of said head end portion, said recessed slot of said grip portion, and said retaining plate; and

a locating member formed of a slide block and a press block, said slide block being disposed in said axial slide slot and provided with a stop surface, said stop surface and said axial slide slot being provided with a spring disposed therebetween, said press block being put through said insertion of said axial slide slot to join with said slide block such that said press block is exerted on by an external force to control a displacement of said slide block.

2. The screwdriver rotating and locating structure as defined in claim 1, wherein said retaining plate is provided in other side thereof with a protrusion, said other side of said retaining plate being devoid of said toothed slots;

wherein said grip portion is provided with a receiving slot corresponding in location to said protrusion of said retaining plate;

wherein said protrusion of said retaining plate is located in said receiving slot of said grip portion, so as to prevent said retaining plate from turning.

3. The screwdriver rotating and locating structure as defined in claim 1, wherein said press block has a face and a clamp;

wherein said slide block has a stepped rod which is held by said clamp of said press block;

wherein said insertion hole of said head end portion is provided with a sunk slot for receiving said face of said press block.