RU187727U1 - Foldable student desk - Google Patents

Abstract

The utility model relates to the field of furniture production intended for educational purposes. Office desks, like reading and writing tables, standing or using a high chair, were widespread in the 18-19 centuries. The term “desk” was present in the dictionary of V. Dahl in 1882, and lyceum students from Tsarskoye Selo Lyceum were engaged in the desk. In connection with the revival of interest in the use of desks as furniture conducive to a healthy posture of the child, there was a need to create a sample of the desks that would meet modern requirements and made using modern materials. Unlike massive 19th century desks, the presented utility model solves the problem of creating a sample with the properties of mobility, compactness, lightness, adjustable both in height and in inclination of the working plane. Due to these properties, the desk can easily be moved within the apartment to save the child’s health resources (vision, posture) and ensure the convenience of classes. The compactness of the desk when folded makes it easy to store it during periods when it is not used.

Description

Field of Technology:

The utility model relates to products of the furniture industry intended for educational purposes. Office desks, like reading and writing tables, standing or using a high chair, were widespread in the 18-19 centuries. The term "desk" was present in the dictionary of V. Dahl in 1882, the lyceum students of the Tsarskoye Selo Lyceum were engaged in the offices in their rooms. Over time, desks and tables began to prevail in student furniture, and desks were recognized as archaic types of furniture.

With the revival of individual forms of education, home schooling, classes with a small number of children, in which there is a frequent need for transforming the space of a room, interest in such a form of furniture as a desk has revived. To a large extent, medical research has contributed to this interest, confirming that the offices are more likely to preserve the health of the student than classical student furniture.

The prior art:

The model closest to the proposed utility model should be recognized as the utility model described in UA 78816. This utility model implements the ability to work while standing, the main quality that distinguishes the desk from other types of tables. The specified prototype offers a stationary version of the desk, designed for a wide range of ages of users and at the same time, having low mobility, great weight and material consumption. Due to these qualities, the prototype is rather a modern version of the design of the 19th century desk. The modern user wants to have light furniture, quite mobile and occupying minimal space during storage. Therefore, low mobility, high weight and high material consumption are technical disadvantages of both this prototype and the desk of various designs used earlier.

Disclosure of utility model:

The technical result of the proposed desk is to increase its mobility due to compactness when folded, low weight and low material consumption of the structure. The main criterion for assessing the achievement of a technical result is the achievement of such consumer properties, in which it would not be difficult for a person who does not have significant physical strength to carry out the transfer of the desk, folding it, bringing it into working condition and performing settings.

The technical result is achieved by the totality of the application of technical solutions, such as:

1. The selection of the fundamental element of the design of the desk - the desk body, which is a spatial structure and having grooves for moving parts of the desk. This solution allowed us to provide maximum structural strength with minimal weight and material consumption. The presence of the grooves provides the task of the trajectories of the movements of the parts of the desk when folding, bringing into working position and adjustment;

2. The decision on the compact placement of the countertops in the folded state in a vertical position with a shift down the grooves in the cabinet;

3. The decision on the compact placement of the desk supports in the folded state in an upright position using the groove in the support;

4. The decision on the choice of material for the manufacture of parts of the desk - for the manufacture of the desk, plywood is mainly used as an environmentally friendly natural material with high mechanical properties, the same in different directions, unlike wood, having less weight and better decorative qualities, unlike become.

In FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6 shows drawings showing design solutions to solve the technical problem. The utility model is based on two assembly units shown in FIG. 1 housing and FIG. 2 - table.

The housing shown in FIG. 1, consists of two identical frames of the housing 1, rigidly connected by two crossbars 2. Placing the crossbars at different levels of height - above and below, as well as in parallel planes displaced relative to each other, provides the body construction with volume rigidity. This allows us to solve the problem of structural strength and stability with minimal weight and material consumption. Vertical straight grooves of the beds provide movement of the counter racks along them, due to which the working height of the desk and the minimum dimensions when folded are adjusted. A groove of complex shape, vertical in the lower part of the bed and turning in the upper part to a horizontal plane, is also designed to solve the problem of ensuring minimum dimensions when folded. The axes of the bolts connecting the casing of the desk with the table shown in FIG. 2. Presented in FIG. 2, the table is a countertop 3, resting on two supports of the countertop 4. When the axis of the bolts connecting the case and the table are at the end of the upper horizontal part of the groove of the bed of the case, the table is in working condition. If the axes are shifted into the groove in the horizontal section and moved down in the vertical section, then the whole table goes into a vertical position and moves as far down as possible, which helps to ensure the minimum size of the desk when folded.

Details of the design of the desk can be seen in FIG. 3, where it is presented in isometric view in working condition, and in FIG. 4, where it is presented in isometric form when folded. Also, the relative positions of the elements and their connections can be considered in FIG. 5 and FIG. 6, which presents views of the desk on the right in working and folded state.

Consider in more detail the working state of the desk (Fig. 3 and Fig. 5). The countertop 3 is in the position necessary for the user, relying on the supports of the countertop 4, which are mounted in two places. The support of the tabletop support and the frame of the housing 1 is made with a bolt 10 and a nut-handle 9. The bolt, in the working position of the desk, is on the horizontal section of the groove of the frame. The second fastening of the tabletop support to the frame bed is made using the table stop 8, which has five open grooves, so that the user has the ability to adjust the tilt of the tabletop in the working position. The number of grooves and the length of the stop are determined based on the required number of steps for adjusting the inclination and the range of variation of the inclination of the working surface. The table stops are also attached to the body and table using bolts 10 and handle-nuts 9.

Rack 5 is an element that regulates the height of the desk. The rack has the ability to move along the housing due to the vertical groove in the frame of the housing and the groove in the rack. The groove in the rack has transverse open grooves along its length, allowing the rack to be fixed in one of the selected positions. The number of slots corresponds to the number of necessary positions for adjusting the height of the desk. To connect the casing and the rack also uses a pair of bolts - handle-nut. The advantages of this option for connecting the case and the rack are the ability to quickly change the height of the desk by adjusting the position of the racks in turn, by tilting the desk to the side when one of the racks is without load and allows you to easily select the groove necessary for fixing. It is also necessary to note such an advantage of the design as the realized possibility of separate independent regulation of the tilt of the countertop and the height of the desk.

To ensure a stable position of the desk, the support 6 is attached to the rack, in its lower part. In the working position, the support is in a horizontal position, ensuring that the desk is kept from tipping forward or backward. The stiffness of the connection between the support and the strut is provided by the support of the support 7. The emphasis has an opening through which a pair of bolt-handle-nuts connects the emphasis to the support. To connect the emphasis with the stand, an open groove is provided, not a hole, which makes it easy to disassemble this connection when folding the desk. The groove in the support is designed to move the support when folding, in the working state of the desk also plays a positive role, allowing to insignificantly adjust the angle of installation of the support, which is necessary when installing the desk on a surface with irregularities.

In FIG. 4 and FIG. 6 shows the folded state of the desk. An isometric image is shown in FIG. 4, and the right view in FIG. 6. When folded, most elements tend to occupy a position along the cabinet. The support 6, due to the presence of the groove, moves as far back as possible and rises to a vertical position. At the same time, the support of the support 7, having a groove for connecting with the rack a pair of bolt - the handle-nut is released, which allows him to also take a position along the casing of the desk. Rack 5 has a wide horizontal bottom below, which allows for sufficient stability of the desk when folded. If necessary, to ensure a minimum height, the racks can also be adjusted, as shown in FIG. 4 and FIG. 6.

The table stops 8 are also released from the connection with the frame of the housing. The second places of fastening the table to the body are weakened, and the table moves down, while moving into a vertical position. In the above drawings, the handle-nuts have a trihedral shape, since it is such a shape that has received the most preference from users and the least labor-consuming to manufacture. It is possible to use handles-nuts of any shape, up to the simplest nuts of the “lamb” type. Handle-nuts provide freedom of movement when transferring the desk from one state to another and reliable fixation of the elements of the desk and the selected position.

It should also be noted that working with an inclined work plane requires the design of the desk to work with special accessories to accommodate writing instruments. So in FIG. 2 it can be seen that each support of the countertop 4 is adjacent to the countertop 3 not with a solid plane, but with two planes, forming a free space between each other. Additional accessories, such as pencil cases, can be inserted into this space from the inside. Cases can be of various designs, shapes and purposes. There can be several pencil cases, they can be prepared in advance, with a certain set of pencils or crayons, and replaced during the lesson. Also, to fix additional accessories to the countertop, threaded rivet nuts can be installed in certain places. Being in the same plane with the work surface, they do not interfere with the work, but at the same time they allow you to fix various accessories, such as stops, stands, racks or slate board. Brief Description of the Drawings

FIG. 1 General view of the cabinet. The drawing shows:

1 - bed frame;

2 - Cross member.

FIG. 2 General view of the desk desk. The drawing shows:

3 - Countertop;

4 - Tabletop support.

FIG. 3 General view of the desk in working condition. The drawing shows:

1 - bed frame;

2 - Cross member;

3 - Countertop;

4 - Tabletop support;

5 - Stand;

6 - Support;

7 - emphasis of a support;

8 - emphasis table;

9 - Handle-nut;

10 - Bolt.

FIG. 4 General view of the desk when folded. The drawing shows:

1 - bed frame;

2 - Cross member;

3 - Countertop;

4 - Tabletop support;

5 - Stand;

6 - Support;

7 - emphasis of a support;

8 - emphasis table;

9 - Handle-nut;

10 - Bolt.

FIG. 5 Desk view on the right in working condition. The drawing shows:

1 - bed frame;

2 - Cross member;

3 - Countertop;

4 - Tabletop support;

5 - Stand;

6 - Support;

7 - emphasis of a support;

8 - emphasis table;

9 - Handle-nut;

10 - Bolt.

FIG. 6 View of the desk on the right when folded. The drawing shows:

1 - bed frame;

2 - Cross member;

3 - Countertop;

4 - Tabletop support;

5 - Stand;

6 - Support;

7 - emphasis of a support;

9 - Handle-nut;

10 - Bolt.

Utility Model Implementation

The utility model can be implemented both on an industrial scale and in a makeshift way. A pilot batch of bureaus was made and on its basis several samples with a modified design of individual elements. Most of the parts, with the exception of the countertop, were made of plywood with a thickness of 15 mm. The countertop was made of plywood 10 mm thick. Parts were manufactured on a machine that performs laser cutting with subsequent manual processing of edges in places where it was necessary. It is also possible to manufacture parts by milling. Plywood, an environmentally friendly material, with good mechanical properties, with good processability, should be recognized as the most suitable material for the manufacture of a utility model. Handle nuts were also made of plywood with a thickness of 15 mm by pressing threaded rivets into blanks from plywood. This allowed to give the product a single style. Nevertheless, it is possible to produce a utility model using other materials, for example, composite materials using polymer compositions in fiberglass reinforcement. When using plywood, a desk designed for an elementary to middle school student, having limits on the regulation of the height of the working surface from 700 to 1100 mm, has a mass of less than 7 kg. As bolts, standard furniture bolts with a square GOST 7802-81 or DIN 603 are used.

Information sources

1. Patent of Ukraine UA No. 78816 "Individual desk-desk for work while standing and sitting."

Claims (1)

The folding student’s desk is a table for work while standing or sitting on a high chair, the vertical case of which contains curly grooves for lowering the tabletop down when moving it from an adjustable operating state close to horizontal to a vertical folded state, having grooves in the case for vertical the movement of the racks, with the supports of the racks having grooves for their translation from the working horizontal position to the vertical position of the folded state.

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