Device adapted for mounting through wall
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Solution Overview
Problem
Existing wall through fixture devices require hand support for objects until they are securely fixed, complicating the fixing process and offering low workability, and previous designs fail to securely attach objects to the wall.
Innovation Solution
A wall through fixture device with a drawing back mechanism using a pair of latch members and a resilient member, allowing the object to pass through the wall without hand support, and securely locking it in place by spreading the latch members against the wall's inner face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixture device uses backup members with hooks or wings that must be driven to displace for sandwiching the wall, then the object can be securely fixed to the wall, but hand support is required during the process and workability is reduced
Solution Approach 1:
The latch members are pre-positioned on the backup member in a retracted state that allows the object to pass through the wall without hand support. The resilient member is pre-loaded to automatically drive the latch members into the wall upon insertion, eliminating the need for manual holding during the critical fixation phase.
Solution Approach 2:
The resilient member automatically drives the latch members to engage with the wall's inner face without requiring manual intervention. The system self-activates upon insertion, with the resilient member's stored energy converting to mechanical motion that spreads the latch members against the wall, securing the object without hand support.
2Device complexity
If a fixture device uses only relative extension of two holding elements, then the structure is simple, but the object cannot be fixed securely to the wall
Solution Approach 1:
The fixation function is divided into two distinct components: resilient members that provide automatic engagement force, and latch members that provide mechanical interlocking with the wall. This segmentation allows each component to be optimized for its specific function while maintaining overall structural simplicity.
Solution Approach 2:
The latch members are designed to be movable relative to the backup member, transitioning from a retracted state during insertion to an engaged state against the wall. This dynamic capability allows the system to adapt to different phases of installation while maintaining secure fixation once engaged.
3Reliability
If latch members are held spreadably by a resilient member, then the object can be fixed securely, but the latch members must be drawn back to allow passage through the wall
Solution Approach 1:
The resilient member and latch members are integrated into a single assembly where the resilient member is positioned to directly drive the latch members. This merging eliminates the need for separate actuation mechanisms, reducing overall complexity while maintaining the draw-back and engagement functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and secure fixation of objects to the wall, allowing hands to be freed from the object during the process, ensuring the object remains fixed until the latch members engage, thus improving workability and securing the object's attachment.
Implementation Method 1
a resilient member (38) which is disposed inside the pair of latch members (36R, 36L) for urging the pair of latch members (36R, 36L) to spread apart each other
Data Source
Figure 1(A)~1(B)
Figure 2
Figure 3(A)~3(B)
AI summary
A pair of latch members 36R, 36L in a case 20C protrudes from an outer face of the case 20C by a spring 38 and when the case 20C is passed through a wall hole 22H, the latch members 36R, 36L are narrowed by an engagement between outer edge (guiding) slant face 36ROI, 36LOI and a wall hole 22H and after the case 20C has passed through the wall hole 22H, the latch members 36R, 36L are spread by a spring 38 so as to engage the engagement slant faces 36RLI, 36LLI with the wall hole 22H and also while fixing temporarily the case 22C to the wall 22 together with a flange 20FL of the case 22C. After that, a screw 32 is screwed to draw the nut 34 toward the flange 20FL and to engage securely the latch members 36R, 36L held to the nut 34 with the wall hole 22H to complete secure fixing of the case 20C.