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Impact tool

A technology of impact tools and anvils, applied in the field of impact tools, can solve problems such as cracks, stress concentration, failure of anvils, etc.

Active Publication Date: 2021-09-14
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the hole in the tubular shank is too deep, it will affect the strength of the anvil, especially at the junction of the adjoining part and the shank, it is easy to concentrate stress and generate cracks, resulting in the overall failure of the anvil

Method used

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Embodiment Construction

[0021] Below, will refer to Figure 1 to Figure 5 An impact tool and an anvil for the impact tool according to an embodiment of the present invention are described.

[0022] In an exemplary embodiment of the invention, the impact tool is an impact wrench. figure 1 The front end of an impact wrench is shown. The impact tool of the present invention, specifically, an impact wrench 10 includes a housing 1, and a power device (not shown) arranged in the housing is coupled with the power device The gear assembly 2 and the main shaft 3, the hammer assembly 4 coupled with the gear assembly and the main shaft, and the anvil 5 of the present invention. The power unit is preferably an electric motor and is powered by a power source, such as a rechargeable battery or alternating current (not shown). As an alternative, the power unit may be compressed air or hydraulic lines or an air motor driven. The rotation of the power device is decelerated by the gear assembly 2 and then transmitt...

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Abstract

The invention provides an impact tool which comprises a housing, a power device arranged the housing, a gear assembly, a spindle, a hammer assembly coupled to the gear assembly and the spindle, and an anvil, wherein the gear assembly and the spindle are coupled to the power device. The spindle defines a rotating axis about which the hammer assembly and the anvil are rotatable, the anvil has a head portion and a handle portion, the handle portion is approximately cylindrical, at least one lug extends out in the radial direction from the end, away from the head portion, of the handle portion, a bottom surface approximately perpendicular to the rotating axis R is formed, the anvil further comprises a guide portion extending axially from the end, away from the head portion, of the handle portion, and the front end of the spindle is accommodated in the guide portion. Therefore, a better guiding function is realized under the condition that the length of the anvil does not need to be increased. The anvil with the guide portion is simple in structure and easy to machine and assemble, and the reliability and durability of the anvil are improved.

Description

technical field [0001] The present invention relates to a kind of power tool, more particularly, relate to a kind of percussion tool that can rotate striking force to carry out operations such as screw fastening etc. especially. Background technique [0002] Impact power tools are widely known. An impact wrench is an illustrative example of an impact tool that can be used to install and remove threaded fasteners. Specifically, an impact tool, especially an impact wrench, usually includes a motor as a driving source, a gear reduction mechanism and a main shaft that rotates with the driving of the motor, and a striking mechanism with a hammer body combined with a cam of the main shaft, and the striking mechanism is accommodated in Inside the hammer body housing, the hammer body is engaged with the anvil which is pivotally supported on the front end of the hammer body housing. The spindle and the hammer are driven by a motor, which can convert the rotation of the spindle into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B21/00B25B21/02B25B23/00
CPCB25B21/00B25B21/02B25B23/00B25B21/026B25B21/023
Inventor 郑周聪Q·瓦勒陈广明
Owner HILTI AG
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