RU65355U1 - TRANSFORMABLE EDUCATION TABLE - Google Patents

Abstract

The invention relates to educational furniture and can be used as a universal training table for theoretical studies and laboratory and practical work in educational institutions. The invention provides comfort and safety when transforming the training table by rotating the movable part of the tabletop by 90 °. The converted training table contains a movable part of the countertop and a movable shelf located below it, fixed to the movable part of the lifting device. The movable part of the countertop is looped to the back wall of the base and connected by rods to lifting devices. The lifting device comprises a locking device, a lock and a key button for unlocking the lock. The locking device statically fixes the movable part of the countertop at any angle relative to the fixed part of the countertop, provides a smooth movement of the shelf in the vertical direction, preventing its spontaneous lowering, and eliminating the possibility of injury. The lock rigidly fixes the vertical position of the moving part of the countertop and the upper position of the shelf.

Description

The invention relates to the furniture industry, namely to educational tables for special purposes.

The invention relates to educational furniture and can be used as a universal educational table for theoretical studies and laboratory work in schools, institutes and other educational institutions.

Known transformable training table [1], for theoretical and laboratory studies at institutes, technical schools and other educational institutions, containing a support base with a cavity forming an instrument container, which houses the power source and cable. The countertop has a rotary part, which is fixed in two horizontal positions by a locking device, including rods interacting with the sockets, the rotation angle is limited by a pin, which is included in the grooves of the rotary part of the countertop. Instruments are mounted on one surface of the rotary part of the countertop, which allows it to be used in one position as a laboratory bench, and when rotated 180 ° as a desk.

A disadvantage of the known table is the limited scope, the inability to use it as a laboratory table when conducting laboratory classes in chemistry.

Closest to the claimed table is a convertible training table [2] containing a base consisting of a front, back and side walls, a tabletop horizontally mounted on it, containing a movable part, with a shelf located below it. The movable part of the countertop and the shelf are rigidly connected to the back wall of the base, have the ability to move vertically, using two lifting devices located on the side walls of the base, and are locked with a lock in the upper position. On the surface of the movable part of the countertop, two handles are located on the sides, with the help of which the table is transformed.

The disadvantage of the table is the inconvenience in operation, which consists in the fact that the transformation of the table is carried out under the influence of a vertically directed force applied to the movable part of the tabletop by the handles, simultaneously with two

parties by two students. It should be noted that the magnitude of this force is significant, since it is equal to the total weight of the movable part of the countertop, the back wall of the base, the shelf with the movable part of the lifting device and laboratory items placed on it. Uneven application of forces by two people can lead to distortion when moving. The absence of a key complicates the unlocking of the lock, it is necessary to constantly have a separate object, having the shape of a rod, and performing the functions of a key. In addition, the absence of a device that allows you to instantly stop moving and statically fix the countertop with a shelf, can lead to injuries.

The objective of the invention is to create a training table that provides the ability to safely transform the table without the application of significant effort.

The technical result consists in achieving comfort and safety when transforming the training table, which is carried out by turning the movable part of the tabletop by 90 °.

The specified technical result is achieved by the fact that in the training table containing the base, consisting of the front, back and side walls of the welded structure, a tabletop horizontally mounted on it, containing a movable part, a shelf located under it, with the possibility of vertical movement, lifting devices placed on the side walls of the base, and a lock that rigidly fixes the shelf in the upper position, the movable part of the countertop is looped to the rear wall of the base, pivotally connected with a lift devices, and has the ability to rotate 90 ° and move from horizontal to vertical and vice versa. The lifting device contains two channels, one of which has the ability to move relative to the other. The fixed channel is mounted in the side wall of the base and has two through grooves in which two soldiers are welded and can move, welded to the moving channel. A locking device was installed on the soldiers, containing spring-loaded friction washers between which a stationary channel is enclosed, and a pressure bar with a lock groove placed on the stationary channel. At the same time, the surfaces of the friction washers, on the one hand, are in contact with the surfaces of the stationary channel, and on the other hand, with the surfaces of the movable channel and the pressure bar. On the inner side of the table, the movable channel is connected by rods to the movable part of the countertop, and its upper part forms a horizontal plane on which the shelf is fixed. The vertical position of the movable part of the countertop, and the upper position of the shelves, are fixed with a lock containing a spring-loaded flag that can be rotated, and in contact with a key button with horizontal movement, and installed in the hole of the side wall of the base.

On the surface of the shelves can be placed threaded sockets for mounting tripods.

When using the training table in specialized classrooms using appliances, the shelf is equipped with low-voltage sockets.

All the features of the invention that distinguish the proposed training table from the prototype, contribute to the achievement of the above technical result.

The effort required to convert the proposed training table is less than in the prototype due to the rotation of the movable part of the countertop 90 ° using a loop connecting the movable part of the countertop to the rear wall of the base, as well as lifting devices mounted on the side walls of the base, and

connected by rods to the movable part of the countertop. In addition, the force is reduced by the weight of the back wall of the base and is equal to the total weight of the movable part of the lifting device, the shelf and laboratory items placed on it.

Traction when moving the movable part of the countertop, simultaneously provide vertical movement of the shelves.

Soldiers, when moving in the grooves of a stationary channel, provide strictly vertical movement of the shelf, eliminating bias.

The locking device, when moving the movable part of the countertop, statically fixes the movable part of the countertop at any angle relative to the fixed part of the countertop, provides smooth movement of the shelf in the vertical direction, preventing its spontaneous lowering, and eliminating the possibility of injury.

The lock rigidly fixes the vertical position of the moving part of the countertop and the upper position of the shelf. For security reasons, opening the lock provides only simultaneous pressing of two people on the key button on both sides of the table. The fulfillment of this condition excludes the movement of the movable part of the tabletop and the shelf, if the key is accidentally pressed.

Figure 1 presents the converted training table - "laboratory table" General view;

figure 2 lifting device with a movable part of the countertop;

figure 3 lifting device in the upper position side view;

figure 4, the lifting device in the upper position, front view;

figure 5 lifting device in the lower position side view.

The converted training table contains a base, countertop, shelf, two lifting devices. The base consists of front 1, rear 2 and side 3 walls of the welded structure. A horizontally mounted worktop is mounted on the base, consisting of a fixed part of the worktop 4 and a movable part of the worktop 5 connected by a loop 6 to the back wall of the base. The lower surface of the movable part of the countertop is pivotally connected by rods 7 with lifting devices 8, mounted on the side walls of the base. The lifting device contains two channels. In the upper part of the sides of the fixed channel 9, mounted on the side wall of the base, there are holes with an axis 10, under the locking device, which consists of a spring 11 and a flag 12, with which, through the holes in the side wall of the base, the key button 13 is in contact. In the center of the stationary channel there are grooves 14, which include soldiers 15, welded to the movable channel 16. The soldiers are successively equipped with friction washers 17, a pressure plate 18, which has a groove 19 for the locking device, a spring 20 and a nut 21, which are th locking device. On the inside of the table, an axis 22 is welded to the movable channel, which is the attachment point of the rod, fixed with a quick-release washer. The upper part of the movable channel is bent at an angle of 90 °, forming a horizontal surface on which the shelf 23 is fixed.

To convert a study table from a written to a laboratory, the movable part of the tabletop is lifted from the sides of the table and moved from horizontal to vertical position. In this case, the traction connecting the lower surface of the moving part of the countertop with the movable channel leads the channel into motion. At the same time, vertically upward movement of the shelf mounted on the movable channel and the clamping bar with a groove mounted on the soldiers of the moving channel takes place. When the shelf reaches the upper working position, the groove of the clamping bar and the spring-loaded flag, which is placed on the fixed channel, are combined, while the flag is under the action of the spring

falls into a groove and blocks movement, performing the functions of a lock, rigidly fixes the upper position of the shelf, and the vertical position of the moving part of the countertop.

To convert a study table from a laboratory to a desk, simultaneously press the key buttons on both sides of the table and rotate the movable part of the countertop, moving it from a vertical to a horizontal position. At the same time, the key presses the button on the lower part of the spring-loaded flag, rotates it and out of the groove of the clamping bar, at the same time the rods set the movable channel and the shelf fixed on it vertically downward. Friction washers located on the soldiers of the moving channel, and in contact with the surface of the stationary channel, under the action of the spring, brake and provide smooth movement of the shelf down, as well as statically fixes the moving part of the tabletop at any angle relative to the fixed part of the tabletop.

INFORMATION SOURCES

1. SU No. 1667829, A 47 V 17/06

2. RU No. 57342, 06-03

Claims (3)

1. A convertible training table containing a base, consisting of the front, back and side walls of the welded structure, a horizontally mounted tabletop on it, containing a movable part, a shelf located below it with the ability to move vertically, lifting devices placed on the side walls of the base, and a lock rigidly fixing the shelf in the upper position, characterized in that the movable part of the countertop can rotate 90 °, looped to the back wall of the base, and pivotally connected and rods with lifting devices containing two channels, while on one of them, having the ability to move relative to the other, a shelf is fixed, and a locking device is installed, consisting of spring-loaded friction washers and a pressure bar with a lock groove containing a spring-loaded flag, which has the possibility of rotation, placed on a stationary channel, and is in contact with a key button installed in the hole of the side wall of the base with the possibility of horizontal movement. 2. The table according to claim 1, characterized in that the shelf is additionally equipped with threaded sockets for tripods. 3. The table according to claim 1, characterized in that the shelf is additionally equipped with low-voltage sockets.