Simple and convenient positioning lock of up-down desk and chair

A desk and chair, a simple technology, applied in the field of desks and chairs, can solve the problems of inconvenient tools and limited adjustment range, etc.

Inactive Publication Date: 2009-08-05
饶弘剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is: the adjustment range is limited, and it is inconvenient to need tools when adjusting

Method used

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  • Simple and convenient positioning lock of up-down desk and chair
  • Simple and convenient positioning lock of up-down desk and chair

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] Implement the lifting table and chair of the present invention, its leg still adopts inner and outer tube structure. exist figure 1 Among them, two liftable inner tubes 7 parallel to each other are inserted in an outer tube 8 . Correspondingly, the inner and outer tubes are inserted just against each other and can be pulled against each other. There is a space between the two inner tubes 7 in the outer tube 8 .

[0010] The easy and convenient positioning gate of the lifting table and chair of the present invention is just installed in this space. It mainly consists of handle 1 and plate 2. The plate 2 is in the shape of a long strip, and the two ends are sunken into arc-shaped gaps, matching and closely adhering to the inner tube 7 . The shape and width of the board 2 are corresponding to the space where it is located, and can just be placed therein. The length of the plate 2 is greater than the distance between the two inner tubes 7, so it can only be placed obli...

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PUM

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Abstract

Lifting tables and chairs, in particular school tables and chairs used for children have a height adjustment positioning system which has a complicated structure, serious wear and difficult repair, and if the height adjustment positioning system is broken, the whole tables and chairs are rejected. The invention provides a simple positioning gate for the lifting tables and chairs. The simple positioning gate comprises that: a plate (2) is obliquely arranged in a gap between two inner pipes (7) inside an outer pipe (8) of a leg of the tables or the chairs; two ends of the plate are in fit with the inner pipes (7); the lower end of the plate is supported by a cross rod (6), and two ends of the cross rod (6) are fixed on the outer pipe (8); and the plate (2) is provided with a handle (1). The handle (1) is pushed to the lower end of the plate (2) to make the plate (2) separate from the inner pipes (7), so the inner tubes are pulled and adjusted to be high; after the adjustment, the handle (1) is pushed to the higher end of the plate (2) to make the plate (2) attach to the inner pipes (7) closely again and attach closely, so that the positioning is completed. The plate (2) has less wear and convenient replacement, and does not have the problems.

Description

[technical field] [0001] The invention relates to a lifting desk and chair, especially a desk and chair used by children, which is used for adjusting the height and fixing the adjusted position. [Background technique] [0002] The harm of fixed tables and chairs to children's growth and development has already aroused widespread concern. The government has invested a lot of money and plans to completely replace fixed tables and chairs with new-style lifting tables and chairs. How many years have passed, and up to now only a few schools in big cities have used lift tables and chairs. One of the important reasons is that there is a technical bottleneck that is difficult to break through, which is the height adjustment positioning of the lift table and chair. Existing stepless lift tables and chairs almost all have a set of complex height adjustment positioning systems including parts such as gears, racks, rotating shafts, bearings, screw rods, brake pads, knobs. High cost, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47B13/00A47C7/00A47B9/00A47C3/20A47B39/00A47B41/00
Inventor 饶弘剑
Owner 饶弘剑
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