Vehicle Door Handle Resilient Extending Portion Eliminates Adhesive Noise
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Solution Overview
Problem
The existing external handle device for vehicle doors experiences noise due to rubbing between the handle main body and cover, which can be mitigated by using adhesives but increases costs and operation time.
Innovation Solution
An external handle device with a housing recess and handle cover, where an extending portion made of resilient material is sandwiched between the abutting parts, and a retaining member with a cover member made of synthetic resin is used to prevent rubbing and water ingress, eliminating the need for adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If adhesive is used to fix handle main body and handle cover, then rubbing noise is prevented, but manufacturing cost increases and operation time increases due to coating and curing steps
Solution Approach 1:
A cushioning member (resilient material) is introduced as an intermediary between the handle main body and handle cover. This cushioning member prevents direct contact and rubbing between the abutting parts, thereby eliminating noise without requiring adhesive coating and curing steps, thus reducing operation time
Solution Approach 2:
The cushioning member is made of a resilient material that can be easily replaced or integrated into the molding process, eliminating the need for expensive adhesive materials and complex coating operations
2Object-generated harmful factors
If adhesive is used to fix handle main body and handle cover, then rubbing noise is prevented, but manufacturing cost increases
Solution Approach 1:
The cushioning member serves as a mediator that prevents rubbing noise through its resilient properties, eliminating the need for adhesive materials and coating operations, thereby reducing manufacturing cost
Solution Approach 2:
The cushioning member is made of a resilient material that changes its physical state to provide cushioning, replacing the chemical bonding mechanism of adhesives with a mechanical cushioning mechanism that is simpler and cheaper to manufacture
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 prevents noise generation, reduces costs, and shortens operation time by eliminating adhesive use and curing time, while enhancing water resistance for electronic components.
Implementation Method 1
an extending portion which is provided integrally with the jacket member, which is formed from a resilient material, the extending portion being sandwiched between abutting parts of the handle main body and the handle cover
Implementation Method 2
a cover member that is made of a synthetic resin and is fitted onto the retaining member so as to be in intimate contact with the entire outer periphery of the retaining member
Data Source
AI summary
An external handle device for a vehicle door is provided in which an operating handle comprising a handle main body that has formed therein a housing recess having a substantially U-shaped cross section and a handle cover that is secured to the handle main body so as to cover the housing recess is disposed so as to be operable on an outer face side of the vehicle door, and an electronic component unit formed by covering at least an electronic component with a jacket member is housed within the housing recess, wherein an extending portion is provided integrally with the jacket member, which is formed from a resilient material, the extending portion being sandwiched between abutting parts of the handle main body and the handle cover. Such configuration prevents rubbing occurring between abutting parts of the handle main body and the handle cover while eliminating necessity for an adhesive.