Staggered Snap-Fit Fixing Member for HVAC Drainage Channels
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Solution Overview
Problem
The challenge of fixing electric heating elements in HVAC devices' drainage channels has arisen due to the narrowing widths of these channels in new product forms, making it difficult to secure the elements effectively.
Innovation Solution
A fixing member with snap-fit portions on a fixing plate, allowing for clamping and staggered arrangement of heating elements, which can adapt to narrower channels and simplify fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the drainage channel width is reduced in new HVAC product forms, then the device size is reduced, but it becomes difficult to fix the electric heating elements in the drainage channels
Solution Approach 1:
The fixing plate is segmented into multiple snap-fit portions (at least two) that are staggered in both length and width directions. Each snap-fit portion independently clamps different parts of the heating element, distributing the fixation function across multiple locations rather than relying on a single continuous structure. This segmentation allows the fixing plate to securely hold the heating element even in narrower drainage channels.
Solution Approach 2:
The snap-fit portions are arranged in a two-dimensional staggered pattern on the fixing plate, with some portions positioned in the length direction and others in the width direction. This multi-dimensional arrangement maximizes the utilization of limited space in narrow drainage channels while ensuring comprehensive clamping of the heating element at multiple positions.
2Reliability
If traditional fixation methods are used in narrow drainage channels, then the heating element can be fixed, but the fixing member length becomes excessive
Solution Approach 1:
Instead of using a single long continuous fixing structure, the solution segments the fixation function into multiple discrete snap-fit portions distributed across a shorter fixing plate. Each snap-fit portion is a localized clamping feature that independently secures the heating element, eliminating the need for excessive plate length while maintaining reliable fixation.
Solution Approach 2:
The snap-fit portions are strategically positioned at specific locations on the fixing plate where they can effectively clamp the heating element. Rather than requiring uniform coverage across a long plate, the local snap-fit structures concentrate the fixation function at critical points, achieving reliable fixation with minimal plate length.
Data Source
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AI summary
The present application relates to the technical field of heating, ventilation, and air conditioning, and discloses a fixing member, a housing assembly, and a heating, ventilation, and air conditioning device, for use in solving the technical problem in an existing heating, ventilation, and air conditioning device of difficulty in fixing an electric heating member in a drainage channel. The fixing member comprises a fixing plate and a mounting plate; at least two clamping portions are provided on one side of the fixing plate; each clamping portion forms a clamping slot used for clamping a heating member of the housing assembly; and the at least two clamping portions are arranged in a staggered manner in both the length direction and the width direction of the fixing plate, so as to clamp different parts of the heating member. The mounting plate is connected to one side of the fixing plate, and is configured to fix the fixing plate to a housing in the housing assembly. According to the present application, the heating member can be fixed in a drainage channel of the housing in the housing assembly by means of the fixing member, so that when the heating, ventilation, and air conditioning device comprises the housing assembly and when the heating member is an electric heating member, the fixation requirements for the electric heating member in the new form design of the heating, ventilation, and air conditioning device can be met, and the fixation of the heating member in the drainage channel can also be simplified.