I Really Thought That Only Three Major Pieces Are The Core Components? Car Seat

- Sep 20, 2018 -

How to develop the car seat specifically?

The development process of the car seat is very similar to the process of developing a new car. It has to undergo the goal setting - design development - design verification (DV) - mass production verification (PV) - the process of production. Firstly, the comfort index of the new seat is determined by collecting the customer feedback of the previous product and the comfort index parameters of the competing product; then the preliminary concept design of the new product is carried out, and the design plan is determined after many rounds of modification and demonstration. Then the engineering development; the next step is to make the prototype for verification, and continue to modify and then verify according to the results of the test, and then go back and forth until a time node to obtain a final product plan.

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In addition to the basic ergonomic design principles of the car seat, the car seat process has many unique processes. For example, the softness and hardness of different parts of a car seat are different. This is because the car seat has to be comfortable to sit on, and it can fix the human body when the car body is shaking. In general, different positions of the car seat are filled with foaming sponges of different hardness and then adhered by an adhesive, but this tends to cause VOC (volatile organic compounds) to exceed the standard. The new GL8 mid-row seated sponge uses a foaming process called DHH to achieve different hardnesses in different parts of the same filling material, thus reducing the use of adhesives. Reduce the volatilization of VOC.

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In addition to the design process, the development of the seat, one of the most important is the verification process. In order to assess whether the design of the car seat is up to standard, engineers are required to carry out various tests. The types of tests can be said to be varied, but basically all of them are based on the evaluation of the comfort, durability, safety and environmental performance of the seat. Let's take a look at a few of them:

For example, this durability test, using the action of this robotic arm, plus this imitation of the human buttocks component, can simulate the upper and lower seats of the human body, the daily use of the bumps on the seat, and then observe the seat. The wear condition. In fact, there are many types of tests for durability, such as repeatedly applying pressure to the seat surface by mechanical means, simulating whether the seat itself is prone to deformation or abnormal noise in the most violent situation; or placing it at different temperatures. In the closed thermostat of humidity, look at the seat surface for cracking and aging.

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Like this is a typical test for design optimization. The black cloth with a dense grid covered on the left seat can measure the stress distributed on each grid. As long as the tester sits up, it can determine the specific stress distribution on the seat, just like the one on the right. As shown, the magnitude of the stress is indicated by the degree of glare of the color, and if a red portion appears, it indicates that stress concentration occurs in this portion. Engineers need to avoid stress concentration by adjusting the design of the seat's softness and shape.


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