Hand-held Cutting Device Dual Pivot Journaling Member
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Solution Overview
Problem
Conventional hand-held cutting devices are limited to only two cutting positions, which restricts their versatility and efficiency in performing various cutting tasks, especially in compact designs.
Innovation Solution
A hand-held cutting device with a journaling member providing two pivot axes allows the cutting head to be pivoted into three different positions, enabling horizontal, vertical, and shrubbing cuts without requiring the user to angle the handle and shaft, thus enhancing versatility and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hand-held cutting device is designed with only two cutting positions, then the device structure remains simple and compact, but the versatility and operational flexibility are limited
Solution Approach 1:
The patent combines two pivot axes (first pivot axis for horizontal/vertical cutting, second pivot axis for shrubbing position) into a single journaling member. This merging of multiple functional axes into one component achieves three different cutting positions without proportionally increasing device complexity, as the journaling member integrates both rotational capabilities in a single structured unit
Solution Approach 2:
The journaling member serves multiple functions simultaneously: it provides the first pivot axis for horizontal and vertical cutting positions, and the second pivot axis for shrubbing position. This multi-functionality allows a single component to enable three distinct cutting orientations, significantly improving versatility without adding separate mechanisms for each position
2Ease of operation
If the cutting head is limited to two positions, then the device remains compact, but the user must angle the handle and shaft to achieve additional cutting angles
Solution Approach 1:
The patent implements dynamic positioning capabilities by enabling the cutting head to pivot between three distinct positions (horizontal, vertical, and shrubbing) through the journaling member's dual-axis design. This dynamic adaptability allows the cutting head to assume different orientations as needed, improving ease of operation for various cutting tasks without requiring the user to manually angle the handle and shaft
3Adaptability or versatility
If more than two cutting positions are enabled, then operational flexibility improves, but the device size and complexity increase
Solution Approach 1:
The patent merges multiple pivot functions into a single journaling member that provides both the first pivot axis (for horizontal/vertical cutting) and the second pivot axis (for shrubbing position). This consolidation enables three different cutting positions within a compact structure, avoiding the volume increase that would result from adding separate mechanisms for each position
Data Source
Figure 1a~1c
Figure 2a~2b
Figure 3a~3b
AI summary
Herein a hand-held cutting device (2) comprising a handle portion (4), a shaft portion (6), a journaling member (8) providing a first pivot axis (10), and a cutting head (12) is disclosed. The cutting head (12) is connected to the shaft portion (6) via the journaling member (8). The cutting head (12) is pivotable about the first pivot axis (10) between a first position and a second position in relation to the shaft portion (6). The journaling member (8) further provides a second pivot axis (18), the cutting head (12) being pivotable about the second pivot axis (18) between the first position and a third position in relation to the shaft portion (6).