Control the spring of the chair and adjust the amplitude and tightness of the chair backwards.
chairlift
Lifting chair is a new type of chair, which is mainly composed of seat plate, backrest, bracket, bracket rocker arm, lifting positioning device and chair foot. Characterized in that the bracket and the chair foot are correspondingly hinged through a bracket rocker arm, and the bracket rocker arm rotates up and down around a hinge shaft hinged on the chair foot, and when the bracket rocker arm is shaken, the bracket is driven to rise, thereby realizing the lifting of the seat plate; In addition, a lifting positioning device is arranged between the bracket and the chair foot.
superiority
The seat board can be raised and lowered to adapt to people of different heights sitting or standing.
With lifting positioning device, it can be positioned at various heights.
The seat board can be turned up at will to adjust the angle, which is suitable for users' reading, writing, painting, design and other needs.
The utility model has reasonable structure, convenient use and simple operation, and is suitable for schools, families, offices, studios and other occasions, which is beneficial to the health of people's eyes and spine and improves the efficiency of study and work.
measure
To better improve the safety of lift chairs and ensure the personal safety of consumers, we can start from four aspects.
Constantly improve relevant standards. In terms of the safety of lifting chairs, the existing standards still need to be improved, and the performance indicators, inspection and testing methods need to be further strengthened. Because personal safety is involved, relevant standards (or some standards) can be changed from recommendatory to mandatory under appropriate circumstances, so as to facilitate the promotion and implementation of standards and ensure the personal safety of consumers. At the same time, it is necessary to speed up the formulation and revision of standards so as to better integrate standards with practice.
Further develop the certification system. Since May, 2002, the furniture industry began to implement the certification system. For example, according to the Detailed Rules for the Implementation of Furniture Product Certification issued by Beijing China Light Industry Certification Center, furniture products can pass "environmental protection furniture product certification", "environmental protection safety product certification" and "furniture product quality certification", and qualified products can be issued with certification certificates and allowed to use corresponding certification marks. Consumers can know the quality of products by looking at the certification certificate or the certification marks on the products and packaging, without having to master complicated standards and technical requirements. Unfortunately, the office furniture such as lifting chairs is only certified for environmental protection, and its safety performance cannot be guaranteed. It is good for consumers and manufacturers to further deepen the certification system and strengthen the quality assurance ability of the product quality system.
Strict product quality supervision and inspection system. Through product quality supervision and inspection, it is helpful for law enforcers to understand product quality and investigate unqualified products. The published inspection results can also be used as a reference for consumers to understand and choose products. In the period of frequent accidents of lift chairs, the state can conduct special spot checks on such products to protect the personal and property safety of consumers and maintain market stability.
Intensify the investigation and punishment of "three noes" products. According to the data, the lift chairs that usually have accidents are "three noes" products, that is, "no production date, no quality certificate (or production license) and no manufacturer name". This kind of products are usually of poor quality, and once an accident occurs, the responsible person is often not found, which will damage the rights and interests of consumers. Quality supervision departments and administrative departments for industry and commerce should intensify their efforts to investigate and punish the "three noes" hanging chairs and eliminate these "black sheep".
reference data
Baidu encyclopedia:/item/%E5% 8d% 87% e9% 99% 8d% E6% a4% 85/1776412? Fr = Aladdin