Lifting stand for adjusting headrest

A lifting stand for an adjusting headrest, comprising a linear drive device and at least one connecting link assembly, the connecting link assembly comprising a first fastener, a second fastener, a first connecting link, a second connecting link, a third connecting link, and a fourth connecting link;

• wherein a first end of the first connecting link and a first end of the second connecting link are pivotally connected to the first fastener respectively and arranged at an interval, a second end of the first connecting link is pivotally connected to a first end of the third connecting link, a second end of the third connecting link is pivotally connected to the second fastener, a second end of the second connecting link is pivotally connected to a first end of the fourth connecting link, a second end of the fourth connecting link is pivotally connected to the second fastener and arranged at a second interval with the second end of the third connecting link, the second connecting link and the third connecting link are pivotally connected together with a pivot configured between the first and the second ends of the second connecting link and between the first and the second ends of the third connecting link as well;
• the linear drive device having an output end that is capable of linearly sliding is connected to the first fastener, with the output end connected to the third connecting link;
• the third connecting link and the fourth connecting link are folded relatively to the first fastener when the output end is drawn back, and the third connecting link and the fourth connecting link are unfolded relatively to the first fastener when the output end is protruded;
• wherein two connecting link assemblies are included, and the linear drive device is configured between the two connecting link assemblies;
• and a fixed pole and a driving pole are included, wherein two ends of the fixed pole are fixed on the first fasteners of the two connecting link assemblies respectively, two ends of the driving pole are fixed on the third connecting links of the two connecting link assemblies respectively, the linear drive device is pivotally connected to the fixed pole, and the output end thereof is pivotally connected to the driving pole;
• wherein two pivoting arms are protruded and formed on the driving pole, which are positioned at two sides of the output end and pivotally connected to the output end.

A lifting stand for an adjusting headrest, comprising a linear drive device and at least one connecting link assembly, the connecting link assembly comprising a first fastener, a second fastener, a first connecting link, a second connecting link, a third connecting link, and a fourth connecting link;

• wherein a first end of the first connecting link and a first end of the second connecting link are pivotally connected to the first fastener respectively and arranged at an interval, a second end of the first connecting link is pivotally connected to a first end of the third connecting link, a second end of the third connecting link is pivotally connected to the second fastener, a second end of the second connecting link is pivotally connected to a first end of the fourth connecting link, a second end of the fourth connecting link is pivotally connected to the second fastener and arranged at a second interval with the second end of the third connecting link, the second connecting link and the third connecting link are pivotally connected together with a pivot configured between the first and the second ends of the second connecting link and between the first and the second ends of the third connecting link as well;
• the linear drive device having an output end that is capable of linearly sliding is connected to the first fastener, with the output end connected to the third connecting link;
• the third connecting link and the fourth connecting link are folded relatively to the first fastener while the output end is drawn back, and the third connecting link and the fourth connecting link are unfolded relatively to the first fastener while the output end is protruded;
• wherein two connecting link assemblies are included, and the linear drive device is configured between the two connecting link assemblies;
• and a fixed pole and a driving pole are included, wherein two ends of the fixed pole are fixed on the first fasteners of the two connecting link assemblies respectively, two ends of the driving pole are fixed on the third connecting links of the two connecting link assemblies respectively, the linear drive device is pivotally connected to the fixed pole, and the output end thereof is pivotally connected to the driving pole;
• wherein a connecting piece is formed on two ends of the driving pole respectively, and the connecting piece has one end fixed on the driving pole and another end fixed on the third connecting link.