Screwdriver

Abstract

The invention discloses a screwdriver belonging to a hand tool and comprising a handle, a runner-shaped screwdriver head frame, a push rod and a pushing button assembly, wherein the push rod extends to an accommodating hole of the screwdriver head frame for pushing a screwdriver head in the accommodating hole to a screwdriver head sleeve on the handle until the screwdriver head extends out of thescrewdriver head sleeve when the pushing button assembly is positioned on a first positioning part in the front of a sliding way on the handle, and the push rod is positioned at the rear side of the screwdriver head frame and drives the screwdriver head to the accommodating hole when the pushing button assembly is positioned at the rear part of the sliding way on the handle. The invention has less parts and a simple structure; the screwdriver head is replaced from the screwdriver head frame by only rotating the screwdriver head frame and pushing the push rod to move front and back without separating the screwdriver head frame from the handle, thus the screwdriver is simple and easy to operate; and the screwdriver head frame assembled on an installing position can be seen through a seam onthe handle, therefore, the screwdriver head required using can be accurately transferred to correspond to the push rod and pushed out by using the push rod.

Description

technical field [0001] The invention belongs to hand tools, in particular to a screwdriver, which has a bit holder like a wheel-type magazine for arranging a plurality of different types of bits, and the bit holder can be rotated like turning a magazine when in use. Choose different types of batch heads. Background technique [0002] Most of the existing screwdrivers have a screwdriver extending forward from the handle, and the front end of the screwdriver forms a screwdriver or installs a screwdriver. It is inconvenient to use the screwdriver or the bit to be replaced when different types of bit bits are required to work. No. US6314995A, US 6138537A, and US 7028593B1 patents respectively claim to protect a kind of screwdriver that includes a screwdriver, and they all have a bit holder with a rotary magazine clip for placing a plurality of different types of bits. Rotate the bit holder like turning the clip to change different types of bits. But they have the following di...

AI Technical Summary

Problems solved by technology

[0003] 1. complex structure;

[0004] 2. When changing the bit from the bit holder, the handle needs to be separated from the installation position of the bit holder, which is inconvenient to operate;

[0005] 3. When screwing the screw, it is necessary to force the push rod forward with the handle to apply torque to the screw, and the push rod is easy to retract;

[0006] 4. The applied torque is mostly limited by the matching structure of the handle and the installation position of the bit holder. Since the matching structure is usually a plastic part, the torque is limited;

[0007] 5. The position corresponding to the bit holder and the push rod is blocked, which will block the user's sight, and the bit cannot be replaced accurately;

[0008] 6. It is inconvenient to replace the bit rack, so it is also inconvenient to replace the bit on the bit rack;

[0009] 7. Lack of positioning on the bit holder, the ejector rod cannot be accurately aligned with the bit placement hole on the bit holder, so the required bit cannot be pushed out smoothly

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