Vehicle Roll Shade Lock Mechanism Assembly Automation
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Solution Overview
Problem
The assembling operation of a roll shade device is time-consuming due to the need to manually hold the roll shaft against the elastic restoring force or use a pin tool, which can lead to errors in removing the tool.
Innovation Solution
A vehicle roll shade device with a lock mechanism that maintains the roll shaft in a pre-wound state using an elastic member and a release mechanism that automatically unlocks when the bearing member is assembled, eliminating the need for manual intervention or pin tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual holding or pin tool is used to assemble bearing members, then the roll shaft can be assembled at predetermined positions, but the assembling operation becomes extremely time-consuming
Solution Approach 1:
The lock mechanism is pre-configured on the bearing member to automatically lock the roll shaft at the predetermined assembling position. The lock groove and lock protrusion are designed in advance to engage automatically when the bearing member is installed, eliminating the need for manual intervention during assembly.
Solution Approach 2:
The bearing member's lock mechanism performs the locking function automatically through its own structure. When the bearing member is assembled, the lock protrusion automatically engages with the lock groove, and the elastic member automatically provides the locking force, making the system self-servicing without requiring external tools or manual holding.
2Ease of manufacture
If pin tool is inserted to hold rotation for assembling, then the bearing member can be assembled, but the pin tool needs to be inserted and removed which is time-consuming and may cause workers to forget removal
Solution Approach 1:
The lock mechanism is designed to be self-activating during the assembly process. The actuator is pushed by the assembling operation itself, which automatically drives the lock protrusion into the lock groove, eliminating the need for separate tool insertion and removal steps.
Solution Approach 2:
The locking function is extracted from the assembly process and integrated into the bearing member structure itself. The lock mechanism is built into the bearing member, so the locking action occurs automatically as part of the assembly operation, removing the need for external pin tools.
3Stability of the object's composition
If elastic restoring force is applied to pre-wind the roll shaft, then the shade is kept under tension to prevent sagging, but manual intervention is required to maintain the pre-winding state during assembly
Solution Approach 1:
The lock mechanism automatically maintains the pre-winding state created by the elastic member. The elastic member continuously applies restoring force, and the lock mechanism automatically holds this state without requiring manual intervention to maintain it during assembly or operation.
Solution Approach 2:
The lock mechanism prevents the elastic member from unwinding prematurely during assembly. By locking the roll shaft in the pre-wound state before assembly is complete, the system prevents the adverse effect of losing the elastic restoring force, ensuring the shade remains under tension throughout the assembly 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
This solution improves assembly workability by allowing the roll shaft to be kept in a pre-wound state without manual effort and prevents errors related to tool removal, streamlining the assembly process.
Implementation Method 1
an elastic member which is interposed between the roll shaft and the bearing member, wherein the bearing member includes: a lock mechanism which locks rotation of the roll shaft in a state of being urged to rotate in a shade rewinding direction by the elastic member
Data Source
AI summary
A vehicle roll shade device is provided which includes a shade that opens and closes an inner opening of a roof; a roll shaft that winds the shade in a roll shape; a bearing member that pivotally supports the roll shaft; and an elastic member that is interposed between the roll shaft and the bearing member, wherein the bearing member includes: a lock mechanism that locks rotation of the roll shaft in a state of being urged to rotate in a shade rewinding direction by the elastic member; and a release mechanism that releases a locked state of the lock mechanism, and wherein a portion of the release mechanism comes in contact with a predetermined portion to be displaced when the bearing member is assembled to an assembling position, and the locked state of the lock mechanism is released in conjunction with the displacement.