Protruding Hammer Assembly Layout for Compact Tool Housing
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Solution Overview
Problem
Existing machine tools, such as rotary hammers and chisel hammers, face challenges in achieving a compact design and ease of handling due to the need for a large gap to accommodate the movement of the assembly within the housing, leading to voluminous dimensions.
Innovation Solution
The assembly is configured to project from the housing in certain areas, allowing it to move freely in three spatial directions, particularly the drive unit projecting partially or fully in the vertical direction, enabling a slim and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the assembly is arranged inside the housing with damping, then the machine tool structure is enclosed and stable, but the housing dimensions become voluminous to accommodate the movement gap
Solution Approach 1:
The drive unit is extracted from the enclosed housing and allowed to protrude externally. This removes the need for a large internal housing volume to accommodate damping gaps, while the housing maintains its structural stability for the impact mechanism. The drive unit moves freely in the protruding region without being constrained by housing dimensions.
2Ease of operation
If the housing is designed with large gap for assembly movement, then the assembly can move freely, but the machine tool becomes voluminous and difficult to handle
Solution Approach 1:
The drive unit is positioned in a protruding region extending from the housing in a direction perpendicular to the impact axis. This spatial arrangement allows the drive unit to move freely in three dimensions without requiring additional internal housing volume, maintaining a compact overall machine tool dimensions for easy handling.
3Volume of stationary object
If the assembly is fully enclosed in the housing, then the design is compact, but the assembly cannot move freely in three spatial directions
Solution Approach 1:
The machine tool is segmented into an enclosed housing containing the impact mechanism and a protruding region containing the drive unit. This segmentation allows the drive unit to move freely in three spatial directions in the protruding region while the housing remains compact and enclosed for the impact mechanism.
Data Source
Figure 1
Figure 2
AI summary
Machine tool (1), in particular a rotary hammer or chisel hammer, with a housing (5) having a grip area (7), and an assembly (9) comprising a percussion mechanism (11) and a drive mechanism (13), wherein the assembly (9) is arranged at least partially within the housing (5) and is movably arranged relative to the housing (5), wherein the percussion mechanism (11) has a percussion axis (19) defining a longitudinal direction, wherein the assembly (9) projects out of the housing (5) in certain areas.