Design method of spring for opening and closing lid of pot and pot

Abstract

The invention provides a design method of a spring for a pan open-close cover and a pan. The pan comprises a pan body and a pan cover which is hinged to the pan body, the spring comprises a first spring and a second spring, when the pan cover conducts cover opening motion, the first spring provides bias force which makes the pan cover move toward the cover opening direction for the pan cover, and the second spring provides bias force which makes the pan cover move toward the cover closing direction for the pan cover; the design method comprises the steps that the maximum opening angle in the cover opening state of the pan cover is defined as theta, the torque generated by the first spring is T1, the torque generated by the second spring is T2, the torque generated by gravity of the pan cover is TG, and when the opening angle of the pan cover is within the whole range of 0 degree to theta, the first spring and the second spring always meet a first condition that T1 plus T2 minus TG is larger than 0; accordingly, when the pan is at any position in the cove opening process, it can be guaranteed that the driving force which is applied to the pan is larger than damping force, and according to the design method, it is guaranteed that the pan can successfully open in place.

Description

technical field [0001] The invention relates to the field of cooking equipment, in particular to a design method of a spring for opening and closing a lid of a pot and the pot. Background technique [0002] In order to ensure the smoothness and gentleness of opening and closing lids of pots such as electric rice cookers and electric pressure cookers, it is generally necessary to set a positive spring and a rubber damping block between the pot body and the pot cover of the pot. Slowly open under the combined action of the elastic force of the spring and the damping force of the rubber damping block. Since the rubber damping block is prone to thermal expansion and contraction when heated, and the surface is prone to damage, it will affect the process of opening and closing the cover, resulting in poor user experience. To solve this problem, it is proposed to use reverse torsion springs to replace rubber damping in the prior art However, if the strength of the forward spring a...

AI Technical Summary

Problems solved by technology

Since the rubber damping block is prone to thermal expansion and contraction when heated, and the surface is prone to damage, it will affect the process of opening and closing the cover, resulting in poor user experience. To solve this problem, it is proposed to use reverse torsion springs to replace rubber damping in the prior art Block scheme, but the strength of the forward spring and reverse torsion spring is not well controlled, and the problem of excessive or insufficient elastic force may occur, resulting in the pot lid being tilted back when the lid is opened, the pot jumping, or the pot lid cannot be fully opened.

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