Engine Mount Spindle Retention via Coupler Engagement
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Solution Overview
Problem
Existing engine mount designs either fail to prevent the spindle from coming off during sudden engine displacement or cannot regulate relative displacement of the upper rigid member in the left-right direction, compromising steering stability and risk of spindle disengagement.
Innovation Solution
An engine mounting structure with an engagement portion on the spindle and a coupler on the stopper, allowing direct engagement between the spindle and stopper to prevent disengagement and regulate relative displacement, enhancing stability and reducing inertial resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the upper rigid member is designed to regulate relative displacement in the left-right direction, then steering stability is improved, but the spindle may come off from the upper rigid member during sudden engine displacement
Solution Approach 1:
The invention divides the retention function into two independent components: the upper rigid member provides displacement regulation through its gate-shaped structure, while the stopper provides spindle retention through the coupler-engagement portion mechanism. This segmentation allows each component to specialize in one function without compromising the other.
Solution Approach 2:
The engagement portion on the spindle acts as an intermediary element that connects the spindle to the stopper's coupler. This intermediary mechanism ensures the spindle cannot come off while allowing the upper rigid member to freely perform its displacement regulation function.
2Reliability
If an engaging protrusion is provided to the insert of the spindle to reduce the risk of coming off, then spindle retention is improved, but the ability to regulate relative displacement of the upper rigid member in the left-right direction is lost
Solution Approach 1:
The invention separates the retention function (handled by the stopper with coupler and engagement portion) from the displacement regulation function (handled by the upper rigid member's gate-shaped structure). This allows the engagement protrusion to be replaced by a more effective coupler mechanism without sacrificing steering stability.
Solution Approach 2:
The invention extracts the retention function from the upper rigid member and relocates it to the stopper. This extraction allows the upper rigid member to focus solely on displacement regulation while the stopper handles spindle retention through the coupler-engagement portion mechanism.
3Reliability
If the spindle is constrained to prevent coming off, then spindle retention is improved, but the upper rigid member cannot move freely to regulate displacement
Solution Approach 1:
The invention divides the constraint mechanism into two parts: the engagement portion-coupler connection prevents spindle extraction, while the gate-shaped upper rigid member allows controlled movement in the left-right direction. This segmentation enables simultaneous achievement of retention and mobility.
Solution Approach 2:
The invention creates a dynamic system where the engagement portion can move freely within the coupler's engagement space during normal operation, allowing the upper rigid member to regulate displacement. However, the coupling mechanism prevents extraction beyond certain limits, providing dynamic retention without excessive constraint.
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
The solution effectively reduces the risk of spindle disengagement and regulates relative displacement, improving steering stability and rigidity while minimizing inertial resistance, thus ensuring stable engine support and reduced risk of damage from excessive loads.
Implementation Method 1
an elastic support connecting the upper rigid member to the lower rigid member and supporting the upper rigid member in a manner that the upper rigid member is movable with respect to the lower rigid member
Data Source
AI summary
A protrusion (54) acting as an engagement portion is provided to a root (52) of a spindle (5) to an engine. An extending portion (45) extending above the root (52) of the spindle (5) is provided to a stopper (4). An opening (46) acting as a coupler is provided to the extending portion (45). The protrusion (54) and the opening (46) engage with each other, thereby reducing the risk of the spindle (5) coming off and regulating relative displacement of an upper rigid member (2) supporting the spindle (5) inserted into the upper rigid member (2).