Cartridge Ejection Tool with Adjustable Grip Width
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Solution Overview
Problem
Existing tools, such as cartridge ejection devices and clamping tools, lack the ability to adjust the grip width to accommodate different hand sizes, leading to inefficient operation and user discomfort.
Innovation Solution
The pivot axis of the drive lever can be moved between two positions, adjusting the distance between the finger grip flank and the palm support flank, allowing for customizable grip width through a bearing body that can be rotated and locked in different positions, ensuring the drive lever maintains optimal angular alignment with the handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grip width is fixed, then the tool structure is simple, but the tool cannot accommodate different hand sizes
Solution Approach 1:
The patent applies the dynamics principle by making the pivot axis position changeable between two positions, allowing the drive lever to adjust its angular alignment with the handle. This dynamic adjustment enables the tool to adapt to different grip widths and hand sizes, transforming a static structure into an adaptable one without excessive complexity
Solution Approach 2:
The patent implements parameter changes by varying the distance between the finger grip flank and the palm support flank through pivot axis repositioning. This changes the geometric parameters of the tool's grip configuration, allowing it to accommodate different hand sizes while maintaining structural integrity
2Adaptability or versatility
If the pivot axis position is fixed, then the manufacturing is simple, but the grip width cannot be adjusted
Solution Approach 1:
The patent applies segmentation by dividing the handle structure into distinct components (first handle part, second handle part, drive lever) that can be manufactured separately and then assembled. This allows each component to be produced using standard manufacturing processes while the overall assembly provides adjustable functionality
Solution Approach 2:
The patent implements universality by designing the handle and drive lever components to serve multiple functions: structural support, force transmission, and grip width adjustment. These universal components can accommodate different hand sizes without requiring completely different tool designs
3Ease of operation
If the drive lever is fixed in one position, then the alignment is consistent, but it cannot accommodate varying hand sizes
Solution Approach 1:
The patent makes the drive lever's angular alignment dynamic by allowing it to pivot between two basic positions, enabling users to select the optimal alignment for their hand size. This dynamic adjustment improves operational comfort without requiring complex continuous adjustment mechanisms
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 adjustment enables the tool to be used comfortably by individuals with varying hand sizes, improving operational efficiency and user experience by allowing for precise alignment and force application.
Implementation Method 1
The pivot axis of the drive lever is arranged eccentrically with respect to the adjustment axis. The two positions correspond to preferred rotational angle positions of the bearing body, which are angularly offset from one another by 180°.
Implementation Method 2
The locking means are preferably held in the locking position by a spring element. The force of this spring element must be overcome in order to bring the locking means into the release position.
Implementation Method 3
Locking means are preferably provided in order to lock the bearing body in different rotational positions, and in particular in two rotational end positions. Here, a locking cam or a locking lug can rest in a locking position in a locking recess
Data Source
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AI summary
The invention relates to a cartridge ejection tool comprising a cartridge receptacle (28) for receiving a cartridge, a push rod (26) for ejecting the cartridge which can be moved stepwise in an axial direction by actuating a drive lever (4) and which is supported against an end face (33) of the cartridge receptacle (28), and a handle sleeve (31) arranged in the region of the end face (33) and rotatable about the axis. The handle sleeve (31) has an opening (34) that is open at its edge and is partially congruent with an opening (32) of the end face (33). It is clipped axially onto the end face of the cartridge receptacle (28) and forms a closing element with which an opening gap at the edge of an opening (32) for receiving an ejection nozzle of a cartridge can be closed.