Motor-Fan Assembly Device with Sealing Baffles and Clipping Locks
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Solution Overview
Problem
The existing methods for assembling a fan motor unit and radiator in motor vehicles face challenges in achieving a tight clearance in restricted spaces, leading to air leaks and reduced aeraulic efficiency due to the compactness of modern engines and the need for greater clearance for mounting and dismounting.
Innovation Solution
A device that uses support frames with peripheral baffles to achieve a tight clearance of 1 to 3 mm between the fan motor unit and the radiator, ensuring airtightness and airflow efficiency, with a locking mechanism that allows for tool-free assembly and rapid locking without damaging the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If vertical translation on slides and clipping method is used, then assembly is simple, but tight clearance cannot be achieved between support frames
Solution Approach 1:
The patent introduces a specific assembly device as an intermediary tool between the support frames. This device includes positioning elements and locking mechanisms that enable precise alignment and tight clearance (1-3mm) between the fan motor unit support frame and radiator support frame, while maintaining ease of assembly through a clipping mechanism.
2Manufacturing precision
If horizontal translation and screw fixing method is used, then tight clearance can be achieved, but clearance space for mounting and dismounting increases
Solution Approach 1:
The patent replaces the traditional screw fixing mechanism with a clipping-based mechanical system. The assembly device incorporates clips and corresponding receptacles that enable tight clearance assembly through vertical translation, eliminating the need for screws and reducing the mounting clearance space required in front of the radiator.
3Manufacturing precision
If screw fixing with support spacer is used, then tight clearance is achieved, but assembly time and complexity increase
Solution Approach 1:
The patent combines multiple functions into a single integrated assembly device. The device integrates positioning elements, alignment guides, and locking mechanisms into one tool, allowing tight clearance assembly to be achieved in a single vertical translation motion without requiring separate operations for positioning, alignment, and securing.
4Ease of operation
If traditional assembly methods are used, then mounting is possible, but risk of damaging components during assembly and disassembly exists
Solution Approach 1:
The patent incorporates protective features in the assembly device design, including cushioning elements and controlled engagement mechanisms. The clipping system is designed to engage and lock the support frames without applying excessive force that could damage the components, and the device guides the assembly process to prevent misalignment damage.
Data Source
Figure 1~6
Figure 2~4
AI summary
A device for assembling a motor-fan unit (3) with a radiator (5) for a motor vehicle engine, comprising: - a first support frame (9) intended to support the motor-fan unit and a second support frame (11) intended to support the radiator, at least one of the support frames (9) being provided with at least one peripheral sealing baffle (13) intended to overlap a peripheral edge of the other support frame (11), - at least four fixing points (19) for fixing the motor-fan unit to the radiator and designed to collaborate by engaging together simultaneously, these respectively being two upper fixing points and two lower fixing points, the two upper fixing points each comprising at least one pin (19a1) and a U-shaped lug (19a2) which are able to collaborate with one another so as to hold the upper part (3a) of the motor-fan unit with relatively little play in relation to the radiator, and the two lower fixing points each comprising at least one pin (19b1) and a lug with an L-shaped housing (19b2) which are able to collaborate with one another so as to hold the lower part (3b) of the motor-fan unit slightly away from the radiator and at the end of travel bring the lower part of the motor-fan unit in close to the radiator with relatively little play, - an indexing element for laterally indexing the motor-fan unit relative to the radiator, and - an element for locking the assembly of the motor-fan unit relative to the radiator.