Carrier Plate Side Opening for Cable-End Assembly and Stiffness
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Solution Overview
Problem
The existing carrier plates, which form a housing portion on the second surface to improve assembly efficiency, compromise the stiffness for holding window glass, leading to potential size increases when reinforcing members are added or thickness is increased.
Innovation Solution
A carrier plate design with a side surface featuring an opening portion for inserting the driving-force transmission member, which includes protrusion and inclined portions to secure the cable end, allowing for efficient assembly without significant size increase or loss of stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a housing portion is formed on the second surface of the carrier plate to improve assembly efficiency, then the assembly operation becomes easier, but the stiffness for holding the window glass decreases
Solution Approach 1:
The invention moves the housing portion from the second surface (opposite the guide rail side) to the side surface of the carrier plate. This dimensional relocation allows the cable end to be housed laterally rather than creating a large recess on the second surface, thereby maintaining the structural integrity and stiffness of the carrier plate while still enabling easy assembly of the cable end after the carrier plate is attached to the guide rail.
2Strength
If a reinforcing member is provided to the second surface or the thickness of the carrier plate is increased to maintain stiffness, then the stiffness for holding the window glass is improved, but the size of the carrier plate increases
Solution Approach 1:
By relocating the housing portion to the side surface, the invention eliminates the need for additional reinforcing members or increased thickness on the second surface. The side surface configuration provides sufficient structural support without requiring extra material or volume, thus maintaining the original carrier plate dimensions while ensuring adequate stiffness for holding the window glass.
3Ease of operation
If the housing portion is formed on the first surface of the carrier plate, then the assembly operation is simplified, but the cable end may come off during attachment to the guide rail
Solution Approach 1:
The housing portion is formed on the side surface at a position that allows the cable end to be inserted and secured before the carrier plate is fully attached to the guide rail. The side surface configuration with its geometric constraints provides preliminary retention of the cable end, preventing it from coming off during the attachment process, while still allowing easy assembly operations.
Data Source
AI summary
A carrier plate to which a moving object is attached and that includes a holding portion holding an end portion of a driving-force transmission member transmitting a driving force for moving the moving object is configured to include: a first surface facing a guide rail on which the carrier plate slides; a second surface placed on an opposite side of the first surface; and a side surface placed between the first surface and the second surface, the side surface including an opening portion into which the driving-force transmission member is inserted. Such a configuration can enhance the efficiency of the assembly work while suppressing an increase in size.