One-Piece Spray Gun With Replaceable Guide Unit
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Solution Overview
Problem
Existing spray guns require complex and costly manufacturing processes due to their two-part design, which complicates the attachment and removal of exchangeable cartridges, leading to increased production costs and potential operational issues.
Innovation Solution
A one-piece base body spray gun design with a recess for a replaceable spray agent guide device that can be inserted and removed without moving parts, using a form-fitting mechanism with optional fixing means for secure attachment, allowing for easy and secure exchange of cartridges without additional assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a two-part head design with pin connections is used for cartridge attachment, then the cartridge can be replaced, but the structure becomes complex and manufacturing costs increase
Solution Approach 1:
The patent merges the two-part head design into a single-integral head structure. The cartridge attachment mechanism is integrated directly into the head body, eliminating the need for separate connection components. This allows cartridge replacement while maintaining a simple, complex-free structure that reduces manufacturing costs.
2Adaptability or versatility
If a two-part head design with multiple preparation steps is used, then the cartridge can be secured, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The patent extracts the complex multi-step securing mechanism and replaces it with a simple insertion motion. The cartridge is secured through a single intuitive action where it snaps into place within the integral head, eliminating cumbersome preparation steps while maintaining secure attachment.
Solution Approach 2:
The cartridge is designed as a disposable component that is easily inserted and discarded after use. The simple integral head design accommodates this disposable nature by providing a straightforward attachment mechanism that does not require complex securing steps, making the overall operation quick and easy.
3Adaptability or versatility
If a two-part design is used for the spray gun, then the cartridge can be accessed, but manufacturing costs significantly increase
Solution Approach 1:
The patent combines the head sections into a single-integral structure that is manufactured as one piece. This merging eliminates the need for separate manufacturing of multiple parts and their subsequent assembly, significantly reducing manufacturing costs while maintaining full cartridge accessibility through the simplified design.
4Reliability
If complex pin connections are used for cartridge attachment, then the cartridge can be firmly held, but the connections are difficult to manufacture and dismantle
Solution Approach 1:
The patent removes the complex pin connection system entirely and replaces it with a simple integral attachment structure. The cartridge is firmly held through the geometric design of the single-integral head that provides natural positioning and securing, eliminating difficult-to-manufacture and dismantle pin connections while maintaining reliable holding.
Data Source
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AI summary
The invention relates to a one-piece spray gun, comprising a main body (1a, 1b), a trigger (40), a paint needle operating element (23) coupled to the trigger (40), a paint needle (26) coupled to the paint needle operating element (23), and an exchangeable spray agent guiding unit (27), the inlet region (27b) of which is or can be connected to a material supply device (28) for the material to be sprayed, wherein the main body (1a, 1b) has at least one opening (61a, 61b) for receiving the exchangeable spray agent directing unit (27). The invention further relates to a material supply device (28), to a cover, to a method for mounting an exchangeable spray agent guiding unit (27) in or on a one-piece spray gun, and to a method for removing an exchangeable spray agent directing unit (27) from or out of a one-piece spray gun.