Wire Harness Clamp Structure for Vibration Damping
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Solution Overview
Problem
Conventional clamps for fixing wire harnesses to vehicle bodies fail to effectively dampen vibrations, leading to issues such as wire disconnection and clamp breakage due to repeated simple vibrations from the vehicle body.
Innovation Solution
A clamp design featuring a holding portion, a fixing portion with a support shaft, a spring, and a vibration suppressor between adjacent surfaces of the spring, which absorbs impact and vibration energy, thereby reducing vibration transmission to the wire harness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clamp with coil springs is used to fix a wire harness to a vehicle body, then the clamp can absorb impact transmitted from the vehicle body, but the coil springs only perform simple vibration and fail to dampen vibration effectively
Solution Approach 1:
A vibration suppressor is introduced as an intermediary component between the coil spring and the support shaft. This vibration suppressor mediates the vibration energy, converting the simple vibration of the coil spring into damped vibration through friction and deformation of the vibration suppressor material, thereby preventing vibration transmission to the wire harness.
Solution Approach 2:
The vibration suppressor converts the harmful vibration energy that would otherwise be transmitted to the wire harness into beneficial heat energy through friction and material deformation. The vibration energy is dissipated as heat within the vibration suppressor, transforming a harmful effect into a harmless or even useful thermal effect.
2Device complexity
If the clamp structure is simplified to reduce complexity, then manufacturing and assembly become easier, but the vibration dampening performance deteriorates
Solution Approach 1:
The vibration suppressor is integrated with the existing clamp structure, merging multiple functions into a unified design. The vibration suppressor combines vibration damping, shock absorption, and structural support functions, eliminating the need for separate vibration damping components and simplifying the overall clamp assembly.
Solution Approach 2:
The vibration suppressor serves multiple functions simultaneously: it acts as a vibration damper, a shock absorber, and a structural element of the clamp. This multi-functionality allows the clamp to maintain high reliability for vibration absorption while keeping the device complexity low, as one component performs multiple critical functions.
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
The clamp effectively dampens vibrations, preventing wire disconnection and clamp breakage by utilizing the spring and vibration suppressor to absorb and dissipate energy from vehicle body vibrations.
Implementation Method 1
Impact transmitted from the vehicle body to the wire harness via the clamp is absorbed by the pair of coil springs disposed in the surrounding region of the support shaft
Implementation Method 2
a vibration suppressor provided between two opposing surfaces of the spring portion that are adjacent to each other in a direction in which the support shaft extends and face each other
Data Source
AI summary
A clamp including: a holding portion and a fixing portion, wherein the fixing portion includes: a base, a support shaft that extends from the base in a direction away from the holding portion, a lock that is provided at a leading end of the support shaft and is formed to be able to be locked to the fixed portion, a spring that is provided in a surrounding region of the support shaft between the base and the lock, and is formed so as to be extendable in a direction in which the support shaft extends, and a vibration suppressor provided between two opposing surfaces of the spring that are adjacent to each other in a direction in which the support shaft extends and face each other.