Handle Weight Mounting Structure With Nested Dynamic Damper

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Solution Overview

Problem

Conventional handle weight mounting structures for saddle-ride-type vehicles fail to adequately ensure vibration isolation due to rigid mounting, and it is challenging to mount dynamic dampers inside the handle pipe.

Innovation Solution

A handle weight mounting structure that includes a hollow handle pipe with a handle weight having a bolt insertion hole and a tapered nut member, allowing a dynamic damper to be mounted inside the pipe while rigidly fixing the handle weight, using a mounting member in a floating state and adhesive agents for enhanced stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the handle weight is rigidly mounted on the handle pipe using a conventional nut structure, then the mounting reliability is improved, but the vibration isolation property deteriorates

Engineering Contradiction:

Improvemounting reliabilityVSAvoidvibration isolation property

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The dynamic damper (58) is nested inside the handle pipe (16), with the mounting member (59) integrated into the existing nut member (57) structure. This allows the vibration isolation component to be housed within the existing mounting space without requiring separate mounting locations, thereby maintaining mounting reliability while improving vibration isolation

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The mounting member (59) acts as an intermediary component that connects the dynamic damper (58) to the nut member (57). This intermediary structure enables the dynamic damper to be securely mounted inside the handle pipe while maintaining the rigid connection between the handle weight (55) and handle pipe (16), thus resolving the contradiction between mounting reliability and vibration isolation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a dynamic damper is mounted on the handle pipe, then the vibration isolation property is improved, but the device complexity increases

Engineering Contradiction:

Improvevibration isolation propertyVSAvoiddevice complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The mounting member (59) for the dynamic damper (58) is merged with the existing nut member (57) structure. The mounting member is formed as an integrated component that combines the fastening function of the nut with the mounting function for the dynamic damper, thereby reducing the number of separate parts and simplifying the overall device structure

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The nut member (57) is designed with multi-functionality: it serves both as the fastening component for securing the handle weight (55) to the handle pipe (16) and as the mounting base for the dynamic damper (58) via the integrated mounting member (59). This universal design reduces device complexity by eliminating the need for separate mounting structures

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Stability of the object's composition

If the handle weight is rigidly fixed to the handle pipe, then the mounting stability is improved, but the ability to mount additional components deteriorates

Engineering Contradiction:

Improvemounting stabilityVSAvoidability to mount additional components

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The fastening system is segmented into distinct functional components: the nut member (57) for securing the handle weight (55) to the handle pipe (16), and the integrated mounting member (59) for mounting the dynamic damper (58). This segmentation allows the handle weight to be rigidly fixed while providing a separate, dedicated structure for mounting additional components, thereby maintaining mounting stability while improving adaptability

Inventive Principle:

Principle #1Segmentation

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 configuration enables effective vibration isolation by securely mounting the dynamic damper inside the handle pipe while maintaining the handle weight's rigidity, enhancing vibration damping properties and reducing replacement costs.

Implementation Method 1

the handle weight is rigidly fixed to a handle pipe due to a wedge action generated by pushing the cylindrical nut into the cylindrical portion

Methodology Applied

Scientific EffectWedge action: Wedge

Data Source

PatentUS8739652B2Handle weight mounting structure of saddle-ride-type vehicle

Publication Date: 2014.06.03 HONDA MOTOR CO LTD

AI summary

A handle weight mounting structure of a saddle-ride-type vehicle includes a dynamic damper on the inside of a handle pipe while rigidly mounting a handle weight. A hollow handle pipe is provided with the handle weight arranged in the handle pipe by insertion from an outer end of the handle pipe. The handle weight includes a bolt insertion hole having a tapered portion on an inner portion thereof in the vehicle widthwise direction. A split groove with a nut member is formed into a tapered shape and is engaged with a split-groove side of the handle weight. A weight fixing bolt passes through the bolt insertion hole of the handle weight and fastens the handle weight and the nut member to each other. A mounting member for a dynamic damper is supported on the inside of the handle pipe in a floating state and is mounted on the nut member.