Suspendable Belt Seat with Adjustable Backrest Angle
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Solution Overview
Problem
Military vehicle belt seats only allow limited adjustment of seating position height, which is inadequate for drivers of varying sizes, as only the height of the seat above the vehicle floor can be adjusted by changing belt lengths, restricting comfort and practicality.
Innovation Solution
An adjustable belt system with a movable belt attachment and guide, allowing the angle of the backrest to be changed independently of the seat height, using an adjustment device that can alter the course of the belt and its length, enabling better adaptation to the driver's height and providing additional flexibility in seating positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the belt length is changed to adjust the seating position, then the height of the seat above the vehicle floor can be adjusted, but the adjustment range is limited and cannot accommodate drivers of varying sizes
Solution Approach 1:
The belt system is divided into two independent adjustment mechanisms: one for adjusting belt length (controlling seat height) and another for adjusting belt course/angle (controlling backrest inclination). This segmentation allows each mechanism to optimize its function independently, providing comprehensive seating position adjustment for drivers of various sizes.
Solution Approach 2:
The belt attachment point is made movable along the vehicle roof, allowing dynamic adjustment of the belt's angle of inclination. This dynamic element enables the backrest angle to be adjusted independently from seat height, significantly expanding the adaptability range for different driver sizes and preferences.
2Ease of operation
If only belt length is adjusted, then the seat height can be changed, but the angle of inclination of the backrest cannot be adjusted independently
Solution Approach 1:
The adjustment system is segmented into two independent functions: belt length adjustment for seat height control, and belt course adjustment (via movable attachment point) for backrest angle control. This allows each parameter to be optimized independently without affecting the other.
Solution Approach 2:
The adjustment mechanism transitions from one-dimensional (only length) to two-dimensional control by adding the ability to adjust the belt's angle of inclination through a movable attachment point along the vehicle roof, enabling independent backrest angle adjustment.
3Adaptability or versatility
If the belt attachment point is made movable to adjust the course of the belt, then the backrest angle can be adjusted, but the device complexity increases
Solution Approach 1:
The movable belt attachment point system is designed to be operated by the user themselves through simple manual adjustment, eliminating the need for complex automated mechanisms or additional actuators. The system serves itself by allowing direct user manipulation of the attachment point position.
Data Source
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AI summary
The invention relates to a seat belt for a vehicle (1) comprising a seat (6) with a backrest (13) and a belt (7) for suspending the seat (6) in the roof area of the vehicle (1), wherein the path of the belt (7) is adjustable via an adjustment device (16) to adjust the tilt angle (A) of the backrest (13). Furthermore, the invention relates to a method for changing the seating position of a seat belt (5) for a vehicle (1) comprising a seat (6) with a backrest (13) and a belt (7) for suspending the seat (6) in the roof area of the vehicle (1), wherein the path of the belt (7) is adjusted via an adjustment device (16) to adjust the tilt angle (A) of the backrest (13).