Hand tool with reliable connections

Patent metadata

Field	Value
Publication number	US-10518401-B2
Application number	US-201515548954-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Feb 6, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A hand tool with reliable connections comprises: a working unit having a working end and a handle end opposite to the working end; a handle being mounted on the handle end of the working unit and having a working unit end and a knocking unit end; a knocking unit being mounted on the knocking unit end of the handle. The connecting part between the knocking unit and the handle end of the working unit is a contacting surface, the handle end or the contacting surface is configured as a deformable and non-rigid contact, realizing the reliable connection between the working unit and the knocking unit.

First claim

The invention claimed is:

1. A hand tool with reliable connections, comprising:
a working unit having a working end and a handle end opposite to the working end;
a handle being mounted on the handle end of the working unit and having a working unit end and a knocking unit end;
a knocking unit mounted on the knocking unit end of the handle;
wherein a connecting part between the knocking unit and the handle end of the working unit is a contacting surface, the handle end or the contacting surface being configured as a deformable and non-rigid contact, realizing the reliable connection between the working unit and the knocking unit;
wherein at least one of the contacting surface and the handle end is configured to be tooth-shaped, the tooth-shape can be deformed so as to form a gapless engagement with the contacting surface;
wherein the knocking unit has a tongue part having a recess for accommodating part of the handle end, a closed end of the recess being the contacting surface; and
wherein the handle end has a turnup part, a through hole engaged with the turnup part is configured on the tongue part of the knocking unit, and the working unit and the knocking unit are fixedly connected by the turnup part and the through hole.

2. The hand tool with reliable connections of claim 1 , wherein the turnup part is configured to connect with the handle end of the working unit on the end close to the knocking unit and turn up from the working unit on the end away from the knocking unit.

3. The hand tool with reliable connections of claim 2 , wherein the through hole is a square hole with a slope configured on the part contacting the turnup part.

4. The hand tool with reliable connections of claim 3 , wherein the end turning up from the knocking unit of the turnup part displaces along the slope because of the deformation of the tooth-shape under an external force so as to fixedly connect the working unit and the knocking unit.

5. The hand tool with reliable connections of claim 1 , wherein the working unit is a blade.

6. The hand tool with reliable connections of claim 1 , wherein the material of the knocking unit of the handle is metal or high strength polymer.

Assignees

• Hangzhou Great Star Tools Co Ltd
• Hangzhou Great Star Ind Co Ltd

Inventors

• Li Yueming

Classifications

• B25G3/14

  comprising barbs or teeth · CPC title

• B25G3/28

  comprising wedges, keys, or like expanding means · CPC title

• B25G1/102

  the shape being specially adapted to facilitate handling or improve grip · CPC title

• B25G3/26

  comprising nails, screws, bolts, or pins traversing or entering the socket · CPC title

• B25F1/006 Primary

  with percussion tool-heads or -blades, e.g. hammers, axes · CPC title