Spring-Loaded Fastening Device for Distribution Box Control Panels
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Solution Overview
Problem
Existing methods for installing control panels on distribution boxes, such as HMI and NC panels, face challenges in controlling torque during screw tightening, leading to potential tilting and requiring additional tools, making the process difficult and unreliable.
Innovation Solution
A fastening device utilizing a spring-based biasing member and a locking mechanism with tooth-like structures, allowing for easy assembly and disassembly by hand without the need for screws or additional tools, providing a constant and stable fastening force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual screw tightening is used to fix the control panel, then the installation can be performed without additional fastening mechanisms, but the torque cannot be controlled precisely, leading to potential screw slippage or snap release
Solution Approach 1:
The fastening device uses a spring-loaded mechanism with a push block that automatically applies and maintains the required fastening force against the distribution box. The spring biasing member provides continuous pressure without requiring manual torque control, making the system self-regulating and eliminating the need for precision torque control by the user.
Solution Approach 2:
The fastening device transitions from a static screw connection to a dynamic spring-loaded system. The spring biasing member allows the push block to move dynamically, automatically adjusting to maintain optimal contact force with the distribution box surface, accommodating variations in surface flatness and thickness.
2Reliability
If screws are used to clamp the distribution box, then the control panel can be securely fastened, but an additional mounting tool (screwdriver) is required
Solution Approach 1:
The invention extracts the fastening function from the traditional screw-based system and integrates it into a self-contained fastening device. The spring-loaded push block mechanism provides all necessary fastening functions internally, eliminating the need for external screwdrivers or additional mounting tools.
Solution Approach 2:
The fastening device merges the fastening function with the control panel housing structure. The locking member integrates the push block, spring biasing member, and locking mechanism into a single unified component that is built into the control panel, eliminating the need for separate fastening tools.
3Reliability
If high torque is applied to the screw to ensure complete fixation, then the control panel is securely attached, but screw slippage or snap release occurs
Solution Approach 1:
The spring biasing member acts as a cushioning element that absorbs and regulates the fastening force. Instead of applying excessive force that could cause slippage, the spring progressively compresses to provide the exact force needed for secure fixation, cushioning against over-compression and preventing snap release.
Solution Approach 2:
The invention changes the fastening parameter from discrete screw torque levels to continuous spring compression force. The spring mechanism can dynamically adjust the applied force within a range, providing optimal pressure distribution that prevents both insufficient fixation and excessive force that would cause slippage or damage.
4Productivity
If a fastening device with spring biasing member is used, then quick and easy installation without tools is achieved, but the device structure becomes more complex
Solution Approach 1:
The spring biasing member is pre-compressed during device assembly, storing elastic potential energy in advance. During installation, this pre-stored energy is immediately released to provide the fastening force, enabling quick one-action installation without requiring the user to manually apply force or use tools during the installation process.
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 quick, stable, and reliable installation of control panels on distribution boxes without the need for precise torque control or additional tools, accommodating various thicknesses and ensuring secure engagement.
Implementation Method 1
a biasing member (120) positioned between the push block (110) and the housing (130) in a longitudinal direction and deformable to provide a fastening force
Implementation Method 2
the locking member (140) is of a bent structure so as to have elasticity in a transverse direction
Data Source
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AI summary
A fastening device and fastening method for fastening a distribution box control panel to a distribution box, the fastening device comprising a push block (U0), a biasing member, a shell, and a locking member sleeved in the shell; the method utilizes the biasing force of the biasing member to fasten the device, and utilizes the elasticity of the locking member having a bending structure to realize assembly and disassembly; a user can conveniently assemble the device with hand alone, that is, during assembly, the fastening device is pushed in along a notch in the distribution box control panel and then pressed tightly, and during disassembly, the fastening device can be pushed out after the locking member is pressed. Compared to a screw fastening method, the fastening device of the present invention provides a constant fastening force, thus realizing more stable and reliable fastening.