Chair back cushion adjusting support frame

Abstract

The invention relates to an adjusting frame for a chair, in particular to a chair back cushion adjusting support frame, which belongs to the technical field of chair manufacture, and comprises a support frame, an adjusting frame and a base seat connecting part, and is characterized in that the adjusting frame comprises an ejector rod assembly and a pull rod assembly, and the ejector rod assembly comprises an ejector rod case and an ejector rod sleeved in the ejector rod case; the pull rod assembly comprises a pull rod case, a pull rod sleeved in the pull rod case, and a limit block for propping against the pull rod; one end of the pull rod, which is used for connecting with the chair cushion frame, is provided with a back cushion connecting part. The invention has the characteristics of simple and novel structure and safe and convenient use.

Description

technical field [0001] The invention relates to an adjustment frame of a chair, in particular to an adjustment support frame of a seat back of a chair, which belongs to the technical field of chair manufacturing. Background technique [0002] A chair is a seat tool commonly used in people's life. The most common chair is fixed, that is, the height is fixed, the backrest is fixed and the chair body cannot be turned. However, due to the development of society, people have also put forward more and more requirements for chairs. Among the many functions of the chair, whether the backrest can be adjusted has become a watershed in the grade of the chair. In order to meet people's demand for high-end chairs in offices and other occasions, various manufacturers are trial-producing chairs with adjustable backrests. For example, the Chinese patent No. 200720105497.9 discloses a chair frame, which can realize the adjustment of the backrest. This chair frame comprises base 6, armrest...

AI Technical Summary

Problems solved by technology

This kind of chair is simple in structure, but it is not practical, and it is not reasonable enough from the perspective of use; first, when adjusting the backrest, the adjustment force acts on the two slide bar mechanisms in a dispersed manner, and the magnitude of the two component forces is usually Differently, the force acting on one side of the sliding bar mechanism often hinders the adjustment of the other side of the sliding bar mechanism, so it is easy to make the adjustment difficult and the backrest is slightly tilted, and only when the adjustment force acts on the two places evenly This problem can only be solved when the slider mechanism is on, but people usually lie on the chair and adjust it through the waist, so this is difficult to guarantee; second, after the adjustment is completed, because there is only one side of the slider The mechanism has a sliding rod positioning mechanism. Once the user leans on the chair, it will generate a force that endangers the sliding rod positioning mechanism of the chair. In the past, the left and right sides of the chair will slowly tilt, and even make the use of the chair The lifespan is greatly shortened; if the slider mechanism on both sides has a slider positioning mechanism, it is obviously a difficult and troublesome thing to adjust the backrest

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