Vehicle seat
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle seats face challenges in maintaining rigidity, controlling size and weight, and ensuring the integrity of the reclining mechanism during collisions, while also addressing issues with the vehicle latch device's contact pressure and locking mechanism.
Innovation Solution
The vehicle seat design incorporates a side frame with a reinforced flange part through quenching or embossing processes, optimized bracket configurations to reduce size and weight, a reclining mechanism with an integral fragile part to absorb impacts, and a vehicle latch device with a contact surface shaped to fit the unlock restricting surface to reduce contact pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the flange part is not subjected to reinforcing processes, then the manufacturing process is simple, but the rigidity of the side frame is insufficient
Solution Approach 1:
The patent applies quenching or embossing processes to the flange part, which are parameter changes in the material treatment. These processes increase the rigidity and strength of the flange part without requiring additional structural components, thus resolving the contradiction between strength and manufacturing simplicity.
2Reliability
If the second plate-shaped part of the bracket is disposed outside the cushion side frame, then the bracket can support the back side frame, but the vehicle seat increases in size in the left-right direction
Solution Approach 1:
The patent positions the second plate-shaped part of the bracket inside the cushion side frame structure, effectively nesting the bracket within the existing frame. This allows the bracket to maintain its support function while not increasing the overall width of the vehicle seat, as the bracket components are accommodated within the existing structural boundaries.
3Reliability
If the fragile part of the bracket protrudes outward in the left-right direction, then the bracket can absorb impact during collision, but the vehicle seat increases in size
Solution Approach 1:
The patent designs the fragile part to extend primarily in the front-rear direction rather than protruding outward in the left-right direction. This dimensional reorientation allows the fragile part to maintain its impact absorption capability through controlled deformation during collision, while avoiding an increase in the vehicle seat's width. The impact absorption function is achieved through the length and structural properties of the fragile part in the front-rear dimension.
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 design enhances the rigidity and weight management of the vehicle seat, maintains size control, and ensures the reclining mechanism's integrity during collisions, while also stabilizing the latch device's lock state with reduced contact pressure.
Implementation Method 1
The first flange part includes a first processed part that is reinforced by a quenching process or an embossing process
Data Source
AI summary
A vehicle seat includes side frames and plate-shaped brackets. The side frames include cushion side frames disposed to a left and to a right of a seat cushion and back side frames disposed to a left and to a right of a seatback. The plate-shaped brackets are fixed to rear end portions of the cushion side frames to support the back side frames. Each of the brackets includes a first plate shaped part fixed to a corresponding back side frame and a second plate shaped part fixed to a corresponding cushion side frame. The first plate-shaped part is disposed outwardly in the left-right direction relative to a corresponding back side frame, and the second plate-shaped part is disposed inwardly in the left-right direction relative to a corresponding cushion side frame.