CN203646757U - Automatically telescopic desk - Google Patents

Abstract

The utility model relates to an automatically telescopic desk. The automatically telescopic desk comprises a retraction button, a stop button, a stretch button, desk bodies, chairs, fixing piles, a control system, a motor, wheels, upper connecting rods, middle connecting rods, lower connecting rods, a parallelogram mechanism and a guide rail. The automatically telescopic desk is characterized in that the wheels are installed at the bottom of each desk body and each chair, the desk bodies and the chairs are connected through the long parallelogram mechanism, the motor which is installed on the first row of desk bodies pushes the desk bodies to move frontwards and backwards, the wheels move on the guide rail so that the movement direction of the desk bodies can be controlled, and each row of desk bodies are connected to the parallelogram mechanism through two small connecting rods; every time the parallelogram mechanism deforms, the small connecting rods are driven to move, and desk tops are turned downwards and folded; the rear portion of each chair top is heavier, and after a person on each chair stands up, the corresponding chair top is turned downwards under the action of gravity to be folded; the retracted desk bodies are located on the rear portion of a classroom in a tightly retracting mode, so that the size is reduced, and the useable space of the classroom is widened.

Description

A kind of desk that can automatically shrink

Technical field

The utility model relates to a kind of desk that can automatically shrink, and belongs to teaching aid

Background technology

In current teaching equipment, desk occupies very consequence.Now widely used traditional desk, is to be placed on or to fix on the ground, cleans classroom at every turn, and sweeper must bend over to clean, and efficiency is not high, and easily tired.In addition, tradition desk is difficult for mobile, causes the space in classroom to be occupied by desk, can not be fully utilized, make classmates do activity in classroom and be restricted, thus design a kind of not only convenient cleaning classroom but also can liberate space, classroom can automatically to shrink desk necessary.

Some Foldable desks of having invented need manual operation, use inconvenience.The purpose of this utility model is just to provide desk a kind of structure optimization, that can automatically shrink.

Summary of the invention

The purpose of this utility model is: a kind of desk that can automatically shrink is provided.

For achieving the above object, the utility model is by the following technical solutions: a kind of desk that can automatically shrink, comprises retraction button, stop button, extension button, desk, chair, spud pile, control system, motor, wheel, upper connecting rod, middle connecting rod, lower link, parallel-crank mechanism, guide rail.

It is characterized in that: under desk and chair, wheel is installed, desk is connected with chair with a long parallel-crank mechanism, seesawed by the motor pushing desk being arranged on first row desk, wheel moves on guide rail, control the direction of desk motion, every row's desk has two little connecting rods to be connected on parallel-crank mechanism, each parallel-crank mechanism distortion drives small rod motion, desk top overturns downwards, fold up, the distribution of weight of seat surface is that rear portion is heavier, after people on seat stands, seat surface overturns under Action of Gravity Field, fold up, after shrinking, desk tightens at rear portion, classroom, volume-diminished, classroom free space increases.

The utlity model has following beneficial effect: (1) shrinks desk, convenient cleaning classroom (2) is simple in structure, easy operating

Brief description of the drawings

Fig. 1 is the utility model overall schematic

Fig. 2 is the utility model left view (when expansion)

Fig. 3 is the utility model left view (after shrinking)

Fig. 4 is the utility model top view (after shrinking)

Fig. 5 is the utility model parallelogram sturcutre stereogram

Fig. 6 is the utility model connecting rod schematic diagram

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is elaborated.

As shown in Figure 2, Figure 3, Figure 4, the desk that can automatically shrink, comprises retraction button 1, stop button 2, extension button 3, upper connecting rod 4, desk 5, chair 6, spud pile 7, control system 8, middle connecting rod 9, motor 10, wheel 11, lower link 12, parallel-crank mechanism 13, guide rail 14.It is characterized in that: parallel-crank mechanism 13 is arranged on the middle part of desk 5 and chair 6, as shown in Figure 5, parallel-crank mechanism 13 is made up of two groups of parallelogram, directionality can increase overall stability and motion time, desk 5 and chair 6 are connected into as a whole, desk 5 and chair are provided with wheel 11 6 times, retraction button 1 is installed on first row desk 5, stop button 2, extension button 3, control system 8 and motor 10, the desktop of desk 5 is connected by upper connecting rod 4 with article rack, as shown in Figure 6, article rack is connected with parallel-crank mechanism 13 with lower link 12 by middle connecting rod 9, last row of chairs and spud pile 7 are fixed together, guide rail 14 is installed on ground.

Using method of the present utility model is: while wanting to shrink desk, press retraction button 1, process through control system 8, motor 10 clockwise rotates, drive the wheel 11 under desk 5 to clockwise rotate, wheel 11 moves on guide rail 14, keep desk 5 to start rectilinear motion backward, after promoting successively, row's desk starts to move backward, desk 5 motions drive parallel-crank mechanism 13 to be out of shape, cause that lower link 12 rotates counterclockwise, middle connecting rod 9 also starts to move downward, so desktop and article rack clockwise rotate, fold, more save space, reach precalculated position, motor 10 stops operating, wanting to stop also can pressing stop button 2 midway controls motor 10 and stops operating.While wanting to launch desk, press extension button 3, desk 5 and chair 6 travel forward, similar with contraction process, and when desk launches completely, motor 10 stops operating.

The utility model, compared with traditional desk, adds wheel by desk, when cleaning, desk is retracted to very little volume, and convenient cleaning is time saving and energy saving; While holding indoor activity, desk is retracted to very little volume, does not account for too much space, classroom, reach making full use of classroom.In sum, the utlity model has very large practicality and wide market prospects.

Claims (3)

1. the desk that can automatically shrink, comprise retraction button (1), stop button (2), extension button (3), upper connecting rod (4), desk (5), chair (6), spud pile (7), control system (8), middle connecting rod (9), motor (10), wheel (11), lower link (12), parallel-crank mechanism (13), guide rail (14), it is characterized in that: parallel-crank mechanism (13) is arranged on the middle part of desk (5) and chair (6), parallel-crank mechanism (13) is made up of two groups of parallelogram, directionality can increase overall stability and motion time, desk (5) and chair (6) are connected into as a whole.

2. a kind of desk that can automatically shrink according to claim 1, it is characterized in that: under desk (5) and chair (6), wheel (11) is installed, retraction button (1), stop button (2), extension button (3), control system (8) and motor (10) are installed on first row desk (5), and the desktop of desk (5) is connected by upper connecting rod (4) with article rack.

3. a kind of desk that can automatically shrink according to claim 1, it is characterized in that: article rack is connected with parallel-crank mechanism (13) with lower link (12) by middle connecting rod (9), last row of chairs and spud pile (7) are fixed together, and guide rail (14) is installed on ground.

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