Impact Rod Guide Structure for Efficient Electric Hammering
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Solution Overview
Problem
Existing electric tools suffer from ineffective hammering and energy loss due to the inclination of the impact rod, which leads to repeated impacting and reduced energy transfer efficiency, necessitating a solution to prevent such issues.
Innovation Solution
The electric tool incorporates a guide device with first and second guide parts, where the impact rod has varying radial sizes and angles of inclination to align with the air cylinder axis during impact, preventing the impact rod from disengaging from the locking part and reducing recoil forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gap is provided between the impact rod and support part to allow inclination, then the impact rod can be inclined to prevent repeated impacting, but energy transfer efficiency decreases when the impact hammer impacts the inclined impact rod
Solution Approach 1:
The guide device enables the impact rod to dynamically adjust its inclination angle during the impact cycle. The impact rod transitions from an inclined state during backward movement to a substantially vertical state during forward impact, optimizing both prevention of repeated impacting and energy transfer efficiency at different stages of the cycle
Solution Approach 2:
The inclination angle of the impact rod is changed as a variable parameter rather than being fixed. The guide device controls the inclination angle to be 0.2°-0.5° during backward movement and substantially 0° during forward impact, allowing the system to adapt to different operational requirements
2Loss of energy
If the impact rod is made substantially vertical during impact, then energy transfer efficiency is improved, but the impact rod cannot be inclined to prevent disengagement from locking part
Solution Approach 1:
The guide device enables the impact rod to dynamically adjust its inclination angle during the impact cycle. The impact rod transitions from an inclined state during backward movement to a substantially vertical state during forward impact, optimizing both prevention of repeated impacting and energy transfer efficiency at different stages of the cycle
Solution Approach 2:
The impact rod is pre-inclined during the backward movement phase to prevent disengagement from the locking part, then returned to vertical position before forward impact occurs. This preliminary inclination action ensures reliability is maintained without compromising subsequent energy transfer efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances energy transfer efficiency by aligning the impact rod with the air cylinder axis during operation, preventing ineffective hammering and prolonging the tool's service life by minimizing energy loss and recoil forces.
Implementation Method 1
a piston arranged in the air cylinder, the piston compresses air and drives the impact hammer to impact the impact rod
Data Source
AI summary
The present disclosure relates to an electric tool, including a housing, a motor accommodated in the housing, a transmission mechanism, and an impact mechanism, where the impact mechanism includes an air cylinder, and an impact rod, a guide device, an impact hammer, and a piston arranged in the air cylinder; and when the impact rod moves along a direction opposite to an output direction, a second guide part sequentially supports a third section and a second section greater than the third section in diameter.