Seat Brake Module for Collision-Locked Height Link Hinges
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Solution Overview
Problem
In vehicle seats, the height adjustment mechanism is prone to distortion and deformation during collisions due to the free state of three out of four height links, which are not connected to the driving part.
Innovation Solution
A brake module is designed to be installed on a support frame in a vehicle, connected to an object that can rotate relative to the frame. The module includes a housing, an input unit, a control member, a brake ring, a wedge ring, an output unit, and brake rollers. When an external force is applied, the input unit rotates, releasing the brake rollers to unlock the rotation of the output unit, allowing the object to rotate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If height links are rotatably fastened to the frame with only one connected to the driving part, then the seat height adjustment function is achieved, but the seat frame becomes prone to distortion and deformation during collisions
Solution Approach 1:
The brake module is pre-installed on the height links to provide preliminary restraining force. When collision occurs, the brake module automatically activates to prevent the free height links from rotating, thereby counteracting the collision force before it can cause frame distortion or deformation
Solution Approach 2:
The brake module acts as an intermediary device between the driving part and the free height links. It mediates the connection by providing conditional restraint - allowing normal rotation during adjustment while blocking rotation during collision, thus protecting the seat frame without interfering with the adjustment function
2Adaptability or versatility
If three height links are left in a free state for rotation, then the seat adjustment mechanism operates smoothly, but the free hinges experience flow and distortion during collisions
Solution Approach 1:
The brake module introduces dynamic characteristics to the height link system. The brake rollers can freely rotate during normal operation, allowing smooth adjustment. During collision, the elastic member compresses and the brake rollers lock against the brake ring, dynamically switching from a flexible state to a rigid restrained state to prevent frame distortion
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 brake module effectively prevents the flow in free hinges during collisions, thereby preventing seat frame deformation and enhancing passenger safety by ensuring that the seat height adjustment mechanism remains stable.
Implementation Method 1
An elastic member which presses the brake roller toward the control protrusion may be provided
Implementation Method 2
the brake roller is fitted to the inner peripheral surface of the brake ring and the wedge surface in a wedge shape, so that the rotation of the output unit is locked
Implementation Method 3
when the input unit is rotated by an external force, the control protrusion rotates to move the brake roller fitted in a wedge shape to the wedge surface and the inner peripheral surface of the brake ring, so that the fitted brake roller is released
Data Source
AI summary
A brake module capable of preventing the occurrence of flow in a free hinge in the event of the occurrence of a collision, etc., is provided. The brake module is provided on a support frame installed in a vehicle, is connected to an object provided to relatively rotate with respect to the support frame and restrains the rotation of the object, and releases the rotation restraint of the object when an external force is applied. With this configuration, it is possible to prevent the occurrence of flow in a free hinge in the event of the occurrence of a collision, etc., and to prevent the deformation of a seat frame, so that passenger safety accidents can be prevented.