Vehicle Door Opening Adjusting Block Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing door checking mechanisms for vehicles do not effectively prevent doors from opening further than set, leading to potential contact with obstacles, especially when users do not intend to open the door.

Innovation Solution

An opening adjusting device with a movement restriction portion and an opening adjusting block that includes a check link and a stopper portion, where the opening adjusting block restricts the check link from moving further by contacting the stopper portion, preventing the door from opening beyond a set position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional door checking mechanism is used, then the door can be retained at fully-open and half-open positions, but the door cannot be prevented from opening further than intended

Engineering Contradiction:

Improvedoor position controlVSAvoiddoor contact with obstacles

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The opening adjusting block serves as an intermediary component between the check link and the stopper portion. It translates the rotational movement of the check link into linear movement of the opening adjusting block, which then contacts the stopper portion to prevent further door opening. This intermediary mechanism enables precise control of door opening position.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The opening adjusting block automatically adjusts its position based on the check link movement and self-contacts with the stopper portion when the predetermined opening position is reached. The inclination surface enables automatic engagement without additional actuators or complex control systems, making the system self-regulating.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If the door checking mechanism allows free opening movement, then the door operation is simple and flexible, but the door may open unintentionally when force is applied

Engineering Contradiction:

Improvedoor opening flexibilityVSAvoiddoor opening control

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The stopper portion is positioned in advance to contact the opening adjusting block when the predetermined opening position is reached. This preliminary positioning creates a pre-set constraint that automatically prevents further opening before unintentional opening can occur, while still allowing normal opening operations up to the set position.

Inventive Principle:

Principle #9Preliminary anti-action

3Reliability

If a mechanism is added to prevent further door opening, then door position control is improved, but the device complexity increases

Engineering Contradiction:

Improvedoor opening restrictionVSAvoidopening adjusting mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The opening adjusting block merges multiple functions into a single component: it translates rotational movement to linear movement, provides the opening adjustment function, and enables contact with the stopper portion. This integration avoids adding separate complex mechanisms while achieving reliable door opening restriction.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The inclination surface on the opening adjusting block uses a curved/angled geometry to convert the rotational movement of the check link into linear movement. This geometric transformation simplifies the mechanism by using shape rather than complex mechanical linkages to achieve the desired motion conversion.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentEP3070239B1Opening adjusting block, opening adjusting device, and door checking mechanism for vehicle doors

Publication Date: 2020.07.01 AISIN SEIKI KK

Figure 1~2A
Figure 2B
Figure 3A

AI summary

An opening adjusting device adjusting an opening of a door for a vehicle, the opening adjustment device being used at a door checking mechanism including a movement restriction portion configured to be fixed at the door for the vehicle, the door checking mechanism being provided with a check link including a first end portion being rotatably mounted on a vehicle body, the check link extending at an inside of the door for the vehicle, the check link being movable in a longitudinal direction of the check link relative to the movement restriction portion relatively, the door checking mechanism including a stopper portion being provided at a second end portion of the check link includes an opening adjusting block including a first portion and a second portion having a predetermined distance from the first portion in a moving direction of the check link, and the movement restriction portion. The movement restriction portion restricts the opening adjusting block from moving to the first end portion of the check link by coming in contact with the first portion. In a case where the opening adjusting block is restricted from moving to the first end portion of the check link, the opening adjustment block restricts the check link from moving to the first end portion of the check link by a contact of the second portion with the stopper portion.