Hook Attaching Unit with Resin Cover for Bolt Concealment
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Solution Overview
Problem
Existing hook attaching systems for motor vehicles have poor aesthetics due to visible bolt heads and compromised workability due to non-integral assembly of hooks and bolts, leading to inefficiencies in assembly and increased risk of injury.
Innovation Solution
A hook attaching unit with a rotatably attached hook, a bolt inserted into a base plate, and a resin cover member that conceals the bolt head, providing integral assembly and improved safety and appearance, while allowing for adjustable height and common use with seat belt anchor plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a bolt is used to attach the hook to the panel, then the hook can be securely fastened, but the bolt head becomes visible through the hook main body hole, deteriorating the outer appearance
Solution Approach 1:
The cover member is nested over the bolt head, concealing it within the hook assembly. The cover member fits over the bolt head portion and extends to cover the hole in the hook main body, hiding the bolt head from view while maintaining the secure fastening function of the bolt.
Solution Approach 2:
The bolt head is extracted from visibility by being covered with the cover member. The cover member is specifically designed to cover the bolt head portion and extend to cover the hole in the hook main body, removing the aesthetic defect of the visible bolt head while preserving the functional integrity of the fastening system.
2Ease of manufacture
If the hook and bolt are assembled separately, then the hook can be attached to the panel, but the assembly process requires multiple steps and separate installations, deteriorating workability
Solution Approach 1:
The hook member, cover member, and bolt are merged into a single integral assembly unit. The cover member is integrated with the hook member, and the bolt is pre-assembled with the cover member, creating a unified component that is installed as one unit rather than requiring separate installation steps for each component.
Solution Approach 2:
The cover member and bolt are preliminarily assembled together before installation. The cover member is pre-positioned on the bolt, and the hook is rotatably attached to the base plate with the bolt already in place, so that during installation, the entire assembly is fastened in one operation without requiring separate steps for bolt installation and cover member installation.
3Object-affected harmful factors
If the bolt is exposed, then the hook can be attached, but the bolt head poses a safety risk and aesthetic issue
Solution Approach 1:
The cover member is nested over the bolt head, concealing it within the hook assembly. The cover member fits over the bolt head portion and extends to cover the hole in the hook main body, hiding the bolt head from view while maintaining the secure fastening function of the bolt.
4Shape
If a resin structure is used for the hook, then the appearance can be improved, but the durability against impact force is reduced
Solution Approach 1:
The hook assembly uses a composite structure combining metal and resin materials. The hook main body and base plate are made of metal for strength and durability against impact forces, while the cover member is made of resin to provide aesthetic coverage and conceal the bolt head, creating a functional composite structure that leverages the advantages of both materials.
Data Source
AI summary
A hook attaching unit in accordance with the invention is constituted by a hook member which is rotatably attached to an end portion of a base plate, a bolt with a flange inserted to a bolt insertion hole of the base plate, and a resin cover member in which a cover body is connected to an annular basement portion. Since the hook member, the cover member and the bolt are integrally assembled, it is not necessary to install the bolt separately in the work field and then install the cover member after attaching the hook, and as such, the workability at the time of fastening is improved. Further, since the cover member invisibly covers the bolt head portion, improved safety and outer appearance is obtained. The hook attaching unit can be also utilized for attaching a seat belt anchor plate.