Detachable Container Handle Segmentation and Positioning
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Solution Overview
Problem
Integrated handles in containers face challenges such as complex molding processes, limited shape and material options, and instability during stacking, particularly with large containers that require strong handles to withstand heavy loads and prevent accidental detachment.
Innovation Solution
A detachable handle with an annular part and detachment prevention mechanism that allows for independent molding and positioning, enabling selection of shape, material, and size, and includes extension parts for stable handling and stacking, with a container design that accommodates the handle to prevent instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an integral handle is formed with the container neck part, then the handle and container can be molded together, but the molding process becomes complicated and the handle strength is weakened when the container size is about 5 gallons
Solution Approach 1:
The handle is divided into separate components: an annular part that attaches to the neck and extension parts that form the handle structure. This segmentation allows each part to be optimized independently - the annular part for strong attachment and the extension parts for handle functionality, resolving the contradiction between integrated molding and handle strength.
Solution Approach 2:
The handle system uses composite construction with the annular part and extension parts made from different materials optimized for their specific functions. The annular part can be made from material suitable for attachment to the neck, while the extension parts can be made from material optimized for handle strength and user comfort, allowing both molding ease and strength requirements to be met.
2Adaptability or versatility
If an attached handle is used with high molding freedom, then shape and material options are expanded, but the handle freely rotates after attachment causing instability during stacking
Solution Approach 1:
The annular part includes predetermined contact parts and positioning features that are designed in advance to engage with corresponding features on the neck. This preliminary design ensures that when the handle is attached, it automatically assumes a fixed position and orientation, preventing free rotation during stacking while maintaining the versatility of separate molding.
Solution Approach 2:
The contact parts and positioning structures act as intermediaries between the handle and neck, mediating the connection to prevent unwanted rotation. These intermediary features transmit and constrain the relative motion between the handle and container, ensuring stacking stability while allowing the handle to be molded separately with high design freedom.
3Ease of manufacture
If the handle is made as a separate attached component, then molding freedom is increased, but an alignment operation is required to prevent the handle from being sandwiched between stacked containers
Solution Approach 1:
The handle incorporates self-positioning features through its contact parts and positioning structures that automatically align the handle with the neck during attachment. This self-service mechanism eliminates the need for external alignment operations, allowing the handle to be molded independently while automatically ensuring correct positioning to prevent sandwiching during stacking.
4Strength
If a large handle is formed to withstand heavy loads, then the handle strength is improved, but the molding complexity increases and detachment risk increases
Solution Approach 1:
The handle is segmented into an annular attachment part and extension handle parts. The annular part is designed specifically for strong attachment to withstand heavy loads, while the extension parts provide the necessary handle length and grip. This segmentation allows the attachment mechanism to be optimized for strength without increasing overall molding complexity, as each segment can be molded independently with appropriate complexity.
Data Source
Figure 1(a)~1(d)
Figure 2(a)~2(d)
Figure 3
AI summary
Provided is a handle 10 including an annular part 11 configured to fit in a neck part 21 of a container 20, a first extension part 12 provided so as to be continuous with the annular part 11, and a first holding part 13 provided so as to be continuous with the first extension part 12, in which the annular part 11 includes a second contact part 14 capable of coming into contact with a first contact part 26 provided to the neck part 21, and the first extension part 12 is configured to be positioned with respect to the container 20 by the contact between the first contact part 26 and the second contact part 14.