Vehicle Door Handle Cable Routing for Extra Length
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Solution Overview
Problem
Conventional operation cable routing structures for vehicle door handle and lock systems face issues with excessively short pathways, leading to increased operational resistance and unintentional door opening due to deformation, which complicates the structure and requires additional components for extra length.
Innovation Solution
An operation cable routing structure that secures extra length by routing the cable around the handle device, supported by a guide section on the handle base, allowing it to absorb positional changes without additional members, and featuring a sponge-like tube for deformation resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the operation cable is routed directly from the bellcrank to the door lock device, then the structure is simple, but the pathway length is insufficient leading to excessive operational resistance
Solution Approach 1:
The operation cable is routed not only in the longitudinal direction but also in the lateral direction by extending it to the lateral end of the handle base and returning it, creating a three-dimensional routing path that increases cable length without adding complex mechanical components
2Reliability
If the operation cable pathway is extended using a link to the handle device, then sufficient extra length is secured, but the structure becomes complicated
Solution Approach 1:
The handle base serves multiple functions: it provides structural support, guides the cable through its internal cavity, and extends the cable pathway to the lateral end, eliminating the need for separate link components while ensuring sufficient cable length
Solution Approach 2:
The cable routing function is merged with the handle base structure itself, where the base's cavity and lateral extension serve as both structural support and cable guidance, reducing the number of separate components
3Device complexity
If the operation cable pathway is short, then the structure is simple, but the curvature of bent sections decreases causing excessively large operational resistance
Solution Approach 1:
By routing the cable in three dimensions (longitudinally through the base cavity and laterally to the side end), the pathway creates gentler bends with adequate curvature radius, reducing operational resistance without complicating the structure
4Reliability
If the operation cable pathway is extended, then sufficient extra length is secured to prevent unintentional opening, but additional components like links are required
Solution Approach 1:
The handle base is designed to serve multiple purposes: structural support, cable routing channel, and length extension mechanism, ensuring sufficient cable extra length for security without requiring additional link components
Data Source
AI summary
The objective of the present invention is to provide a routing structure that is for an operation cable and that, with a simple structure, can route an operation cable (7) with sufficient excess length. The present invention has: a handle device (5) that is affixed to the door (1) of a vehicle and that causes the operation force to an operation handle (3) rotatably connected to a handle base (2) to be output from an output section (4); a door lock device (6) that is disposed in proximity to the output section (4) of the handle device (5); and an operation cable (7) that couples the output section (4) of the handle device (5) and the door lock device (6). The operation cable (7) is connected from the output section (4) to the door lock device (6) via an excess length securing pathway that is approximately one circuit of the perimeter of the handle device (5), and the operation cable (7) is movably supported by a guide section (9) provided to an intermediate position of a mobile member (8) of the handle device (5), and the connection section to the door lock device (6) of the operation cable (7), and on the handle base (2), and thus the ingress of the mobile member (8) into a mobile region is restricted.