Sealer Gun Nozzle Structure for Uniform Vehicle Panel Sealing
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Solution Overview
Problem
Existing methods for applying sealer to vehicle panels face challenges in achieving uniform and continuous application, leading to excessive consumption, impaired appearance, and potential water leakage due to non-uniform sealing, especially when using rubber spacers or washers.
Innovation Solution
A nozzle for a sealer gun featuring a hollow housing and a core with support and spiral portions that allows for continuous and even application of sealer around through holes and fastening nuts, ensuring uniform coverage and enhanced watertightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual application method is used, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
A nozzle assembly with a core and housing is introduced as an intermediary device between the operator and the panel. The core fits into the through-hole while the housing provides a bearing surface, creating a guided system that ensures uniform sealer application without requiring manual skill. The nozzle assembly acts as a mediator that transforms manual operation into precise, repeatable application.
2Reliability
If excessive sealer is applied to secure watertightness, then reliability is improved, but loss of substance worsens
Solution Approach 1:
The nozzle assembly directs sealer precisely to the required locations: around the circumference of the through-hole and into the fastening nut. The core and housing structure creates controlled flow paths that deliver sealer only where needed for watertightness, preventing both deficiency and excessive application. This localized delivery ensures reliability while minimizing waste.
3Ease of manufacture
If rubber spacer or washer is used instead of sealer, then ease of manufacture is improved, but reliability deteriorates
Solution Approach 1:
The nozzle assembly applies sealer in advance to the fastening nut and around the through-hole before the fastening operation. This preliminary sealing action ensures watertightness is established before any potential damage can occur during fastening or unfastening operations, preventing the reliability issues associated with rubber spacers and washers that are subjected to mechanical stress.
4Device complexity
If sealer is applied manually around through hole, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The sealing task is segmented into two distinct functions performed by the nozzle assembly: (1) applying sealer around the through-hole circumference using the core as a guide, and (2) applying sealer inside the fastening nut using the housing as a container. This segmentation of the sealing function into specific zones improves precision while keeping the device structure relatively simple and modular.
Data Source
AI summary
A nozzle for a sealer gun to apply a sealer for sealing a device to a panel of a vehicle includes a housing into which an end portion of the sealer gun is inserted and which has a hollow therein, and a core disposed to be spaced by an interval from an inner surface of the housing and having a lower portion exposed downward from the housing, wherein, in a state in which a lower end of the housing is in close contact with a panel, a sealer supplied from the sealer gun to the housing is applied to a surface of the panel between the housing and the core.