Caulking Gun Push Member Tool-Free Assembly
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Solution Overview
Problem
Conventional caulking guns require tools for assembly and can damage the push pad, making them inconvenient and ineffective for use with both soft- and hard-housing caulk cartridges.
Innovation Solution
A push member with a blockable receiving portion and push portion that can be manually assembled to a push plate without tools, allowing for easy integration with both soft- and hard-housing caulk cartridges, featuring a U-shaped lip and concave face for deformation and adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the round plate and round pad are assembled to the push rod using a nut, then the push member can be securely attached, but tools are required for assembly and the nut is too small to be installed conveniently
Solution Approach 1:
The push member integrates the round plate, round pad, and fastening structure into a single unit. The receiving portion with blocking mouth and lip structure combines the attachment function and securing function in one component, eliminating the need for separate nuts and multiple assembly steps.
Solution Approach 2:
The push member features a self-securing mechanism where the lip of the receiving portion automatically engages with the push plate through the blocking mouth structure. The deformation of the lip allows the push member to secure itself to the push rod without requiring external tools or separate fastening components.
2Object-affected harmful factors
If the round pad is made of plastic material, then it provides cushioning and protection, but the nut can damage the round pad, resulting in ineffective caulking extrusion
Solution Approach 1:
The design removes the damaging nut from the system entirely. The fastening function is achieved through the integrated lip and blocking mouth structure that secures the push member to the push plate without requiring external fastening components that could damage the push pad.
Solution Approach 2:
The receiving portion with lip structure acts as an intermediary between the push rod and push plate, providing a tool-free attachment mechanism that avoids direct contact between metal fastening components and the plastic push pad, thereby preventing damage while maintaining secure attachment.
3Device complexity
If a conventional push member design is used, then the structure is simple, but it cannot be easily assembled or disassembled for different caulk cartridge types
Solution Approach 1:
The push member incorporates a dynamic lip structure that can deform during assembly and disassembly. The lip of the receiving portion bends to allow insertion onto the push plate and then springs back to engage the blocking mouth, providing both simple structure and easy adaptability for different caulk cartridge types.
Data Source
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AI summary
A push member and a caulking gun having the same. The caulking gun includes the push member, a gun body and a push rod. The push member includes a blockable receiving portion which includes a receiving space and a lip protruding from a periphery of the receiving space, and a push portion arranged opposite to the blockable receiving portion in a first direction, for pushing a caulk cartridge. The lip defines a blocking mouth, and the blocking mouth and the receiving space are open toward a same lateral side of the push member to form an open end. When a push plate of the push rod is disposed within the receiving space, the lip and the push plate are blockable with each other in the first direction.