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Lifting device for rotary lifting chair

A technology of rotating lifting and lifting devices, which is applied to chairs, chairs with vertically adjustable seats, and other seating furniture. It can solve problems such as increased pressure, inconvenient maintenance, and explosions, and achieves moderate lifting speed and a wide range of applications. , Ease of use

Inactive Publication Date: 2013-07-24
霍卫东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the nitrogen purity in the lifting device is insufficient and the lifting is too frequent, the temperature of the cylinder will rise suddenly and the pressure will increase, or when the seal is not tight, the gas will burst out, resulting in an explosion, endangering people's lives. Moreover, the use of air pressure chairs is limited by the size of the receptors, and maintenance is also relatively inconvenient

Method used

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  • Lifting device for rotary lifting chair
  • Lifting device for rotary lifting chair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the lifting device for a rotary chair lift includes a cylinder body 1 and a telescopic tube 2, the upper end of the telescopic tube 2 is connected to the seat seat, the lower end of the cylinder body 1 is connected to the seat chassis, the lower end of the cylinder body 1 is provided with an injection hole 16, and the outer wall of the lower part of the cylinder body 1 is Conical, the upper end of the cylinder body 1 is equipped with a telescopic tube centralizing device 18, and the telescopic tube centralizing device 18 is provided with an air inlet and outlet hole 17. Telescopic piston 3, telescopic tube 2 and telescopic piston 3 can freely rotate in the cylinder body 1, an annular space is formed between the telescopic tube 2 and the cylinder body 1, the bottom of the telescopic piston 3 has a valve hole 4, and the top has a valve rod 5 hole and the liquid flow hole 20, the valve body rod hole and the liquid flow hole 20 are connected with ...

Embodiment 2

[0028] Such as figure 2 As shown, the difference between embodiment 2 and embodiment 1 is that an auxiliary spring 12 is set between the sliding sealing piston 9 and the telescopic tube centralizing device 18, and the effect of the auxiliary spring 12 is that when the design elastic force of the energy storage lifting spring 7 is greater than that acting on the lifting When the atmospheric pressure on the piston, the elastic force produced by the auxiliary spring 12 resists the elastic force of the energy storage lifting spring 7, so that the lift chair can still stay on the original height after the human body leaves.

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PUM

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Abstract

The invention relates to a lifting device, and in particular relates to a lifting device for a rotary lifting chair. The lifting device for the rotary lifting chair comprises a cylinder body and a telescoping pipe; the outer wall of the lower part of the cylinder body is conical; a filling hole is formed in the lower end of the cylinder body; the upper part of the telescoping pipe is conical; the lower end of the telescoping pipe is connected with a telescoping piston; a valve hole is formed in the telescoping piston and communicated with a liquid flowing hole; the liquid flowing hole is communicated with an annular space formed by the lower part of the telescoping piston, the cylinder body and the telescoping pipe; a valve rod is arranged in the telescoping pipe and passes through the telescoping piston; the lower end of the valve rod is connected with a valve; the valve cooperates with the valve hole in work; an energy accumulating lifting spring is arranged between the lower end of the telescoping piston and the bottom of the cylinder body; a sliding sealed piston is arranged above the telescoping piston; and a spatial section for the liquid to fluctuate up and down is arranged between the sliding sealed piston and a telescoping pipe straightening device. The lifting device disclosed by the invention is simple in structure, convenient to use, temperate in lifting speed, safe, reliable, and wide in application range.

Description

technical field [0001] The invention relates to a lifting device, in particular to a lifting device for a chair lift. Background technique [0002] At present, lift chairs are divided into two types: pneumatic lift chairs and hydraulic lift chairs. Due to the high cost of hydraulic lift chairs, the relatively complicated structure, and the height adjustment is not sensitive enough, the market share in the domestic market is relatively low. The pneumatic lift chair has the characteristics of low cost, simple structure, and flexible operation, so it is widely welcomed by consumers. However, when the nitrogen purity in the lifting device is insufficient and the lifting is too frequent, the temperature of the cylinder will rise suddenly and the pressure will increase, or when the seal is not tight, the gas will burst out, resulting in an explosion, endangering people's lives. Moreover, the use of the air pressure chair is limited by the size of the receptor, and maintenance i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C3/30A47C3/22
Inventor 霍卫东
Owner 霍卫东