CN204599795U - Foldable multifunctional desk and chair - Google Patents

Abstract

The utility model designs a new folding desk and chair, which is called a multifunctional folding desk and chair. It belongs to the field of learning equipment. The purpose of the utility model is mainly to solve the problems that the desks and chairs occupy a large space and are not easy to fold. Secondly, in order to solve the problem that students of different heights have different demands on the height of desks. There are also the problems of large demand for desk space and free movement of desks by students majoring in graphics. The utility model mainly uses the slide bar that slides up and down between the brackets, the bracket that can slide along the chute on the lower side of the panel and the panel that can rotate around the hinge to realize the height folding of the desks and chairs. Secondly, the fit spring lock and round hole are used to achieve height adjustment. It also uses parallel hinges and flaps to realize the function of increasing the area of the desk, and uses pulleys that can be rotated out and retracted to realize free movement. After the utility model is folded, it can form a vertical flat plate, which effectively saves space. And the appearance is simple and generous, and the structure is simple and easy to produce and assemble.

Description

multifunctional folding desks and chairs

technical field

The utility model designs a folding desk and chair whose height can be adjusted and whose desktop area can be increased or decreased, especially a multifunctional desk and chair which can be completely folded into a thin plate. It belongs to the field of simple mechanical devices operated manually.

Background technique

First of all, the current desks and chairs are all fixed in shape, and cannot be folded when space needs to be saved, causing great inconvenience. Some folding desks and chairs only allow the chair seat to be turned from vertical to parallel, which is not very helpful for saving space. And the existing folding desks and chairs mostly adopt flaps or triangular supports, which are not stable enough during use. Secondly, most of the desks and chairs used now cannot be adjusted in height, and the requirements for use of students of different heights cannot be met. And most of the desks and chairs used today are the same for each major, without professional pertinence, and cannot meet the different needs of students of each major. The existing desks and chairs are basically fixed or not easy to move, and it is not convenient to use the classroom space flexibly.

The utility model mainly applies the simple principle of mechanical design, uses hinges, slide bars, chute and other mechanical components to realize high folding of tables and chairs, and greatly saves space when folded to vertical thin plates. Moreover, the utility model adopts the spring lock buckle to adjust the height of the table to three levels, so as to meet the needs of different students and contribute to the health of the students. The utility model realizes the enlargement of the desktop area by lifting and lowering the flat plates connected by the parallel hinges of the desktop, and increases the table area through the turning plates on both sides of the table, which can be used for drawing by mechanical students. And the drawing tables and chairs currently used do not have bookshelves for placing books, which is unfavorable for drawing. The utility model adds this support for the needs of students. The utility model adds a pulley that can be manually unscrewed at the bottom of the desk bracket, so that the desk can be moved freely when needed.

Contents of the invention

In order to overcome the shortcomings of the existing desks and chairs that cannot be folded, cannot be adjusted in height, use area cannot be changed, and are inconvenient to move, the utility model provides a multifunctional folding desk and chair, which can not only be folded manually, but also can be folded according to It can be adjusted to different heights on demand, and the area can be increased according to needs, and it can move freely through pulleys. The technical scheme that the utility model solves its technical problem adopts is:

The utility model desk both sides support inner side has chute, slide bar, and the support upper end has space, can rotate around the class desktop board of one side support. Under the action of force, the bottom plate of the drawer can slide up along the slide rails on both sides until it is close to the underside of the desk. A sliding rod is connected to the bracket on one side of the desk through a hinge, and the other end of the sliding rod is embedded in the bracket on the other side. Inside the chute. When not in use, there is a locking device to lock it to avoid sliding. When needed, the lock is opened, and the slide bar can slide upward around the hinge end. Driven by the slide bar, the bracket on the movable side of the desk will move closer to the other end along the chute on the lower side of the panel until it fits the other side. There is a rectangular gap matching the size and thickness of the bottom plate of the drawer at the upper ends of the two side supports, and the bottom plate will protrude from the gap when one side of the support moves to the other side. Finally, the bottom plate of the drawer and the desktop plate are automatically turned down by 90 degrees under the action of gravity to be parallel to the support. Fold and finally become a flat board with a very thin thickness.

There are three gear spring height adjustment button devices on the lower part of the brackets on both sides of the desk. There are three round holes on the bracket, and the button device is sleeved in the hollow bracket. Press both sides of the button, and the thin rod part connected after the button is contracted by the spring reaches the gap connection between the round holes, so that it can slide up and down to different gears. The upper part of the desk connected by the button device can be adjusted up and down to different gears to achieve the purpose of height adjustment.

There are pulleys at the bottom of the brackets on both sides of the desk, which can be rotated into the hollow bracket when not in use, so as to ensure the stability of the desk when it is in use and will not slide. When sliding is required, the pulley is rotated out through the exposed handle, and the table can slide freely to facilitate movement.

There are flat plates connected by parallel hinges on the desktop, and the height of the flat plates can be adjusted up and down through the rotation of the hinges. There is a slanted book shelf on the tablet, on which books and albums can be placed for easy viewing while students are drawing. There are flaps on both sides of the desktop near the side of the user, which are connected by cross hinges. When necessary, they can be turned up to 90 degrees to be parallel to the desktop, increasing the desktop area.

A slide bar is designed between the brackets on both sides of the chair of the utility model, a chair back that can be turned over, and a chair panel that can rotate around one side bracket. The folding method is similar to that of a table: the back of the chair is turned down 90 degrees by hinges until it fits the seat of the chair. And there is a locking device on the back of the chair, which can be fixed when it does not need to be folded, and will not affect the stability and firmness of use. The slide bar between the brackets rotates around the hinge at one end, and the other end slides upwards in the chute inside the bracket at the other side. Driven by the slide bar, the bracket will move closer to the other side along the chute on the lower side of the panel until it is in close contact with the bracket on the other side. The fitted chair back and seat board will automatically flip down 90 degrees under the action of gravity to be vertically parallel to the bracket. Finally, fold it into a flat board with a very thin thickness.

Compared with the prior art, the utility model has the difference of the prior art mainly in the difference of the folding manner and the heightening of the folding degree. Most of the existing folding desks just use the chair seat board to be turned upright to be parallel to the ground to save space, and the desks do not have a folding design. This folding method is not very helpful for saving space and maximizing classroom space. There are also some folding tables and chairs that use a cross bracket, which is not firm and stable enough. However, the utility model adopts a brand-new folding method, adopts the cooperation of the slide bar, the chute, the slide rail, and the space to realize the height folding of the desks and chairs, and finally folds the desks and chairs to a thin approximate plane board, which can greatly save space. Moreover, the structure is simple, easy to operate, and the manual operation is convenient. There is no need to fold and it is fixed by a locking device to avoid deformation of the desk and chair during use and ensure its stability. Moreover, the utility model also has multiple functions, such as height adjustment, free movement, increased area, and convenience for drawing requirements. Present height-adjustable desks and chairs generally use screws and nuts to connect the upper and lower parts of the desk. When adjusting the height, a wrench or pliers are required, which is inconvenient to operate and not practical. The utility model is connected by a spring lock, which is simple and convenient to operate, and can be adjusted by pressing the spring lock. Most of the existing desks cannot or are not easy to move. This utility model adopts pulleys that can be rotated out and retracted to realize the movement, which is convenient for free movement of desks and chairs and flexible use of classroom space. In addition, this utility model also takes into account the needs of students majoring in drawing, and uses the flip plate and the plane plate connected by parallel hinges to increase the use area, and is equipped with a book shelf to facilitate drawing. This is a unique function that the existing desks and chairs do not have. .

Description of drawings

Figure 1 is the front view of the desk

Figure 2 is the left view of the desk

Figure 3 is the right view of the desk class

Figure 4 is a bottom view of the bottom plate of the drawer (A-A sectional view)

Figure 5 is a sectional view of the desk support figure (G-G sectional view)

Figure 6 is the front view of the folded desk

Figure 7 is a part diagram of the height adjustment spring lock

Figure 8 is a half-sectional view of the desk pulley (B-B sectional view)

Fig. 9 is a partial view of the bookshelf (partial view to D direction)

Figure 10 is the front view of the chair

In the figure 1. drawer bottom plate, 2. sliding rod, 3. chute (inside table bracket), 4. rectangular gap, 5. chute (underside of desktop board), 6. height adjustment hole, 7. spring lock, 8. Bottom pulley, 9. Guide rail of bottom pulley, 10. Flat panel, 11. Book shelf, 12. Turning plate, 13. Locking device, 14. Cross hinge

Detailed ways

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

Desk embodiment 1 (foldable desk). See Fig. 1, 2, 3, 4. The bottom plate of the drawer (1) is embedded in the slide rails of the brackets on both sides. A slide bar (2) is arranged between the supports on both sides of the table, which is connected to the support on one side with a hinge, and the other end is embedded in the slide rail of the other support. As shown in Figure 4, there is a chute (5) on the lower side of the desktop panel, and the supports on both sides are installed in the chute. There is a rectangular space (4) conforming to the bottom plate of the drawer on the right side support top shown in Fig. 3. Shown in Fig. 1, locking device (13) is arranged between the right side support and the drawer bottom plate.

Desk embodiment 2 (height adjustment of the desk). See Figures 1, 3, and 7. There are three levels of height adjustment holes (6) on the brackets on both sides of the desk. Shown in Fig. 3, a spring catch (7) is installed in one of the height adjustment holes (6). As shown in Figure 7, the internal structure and principle of the spring lock.

Desk embodiment 3 (the movable of desk). See Fig. 2,3,8.Shown in Fig. 6, there are class free movement pulleys (8) at the bottom of the support on both sides of the desk. Shown in Fig. 2,3, there is guide rail (9) to drive the up and down rotation of the handle of pulley (8) inside the support. Shown in Figure 8, pulley (8) internal structure and principle.

Desk embodiment 4 (the area change of desk). See Fig. 2,3,4,9.Shown in Fig. 6,7, useful hinged plane board (10) is connected on the desktop. As shown in Fig. 2, the flat panel (10) can be adjusted in height up and down. Shown in Fig. 9, book shelf board (11) has cross hinge (14) to be connected on the plane board. As shown in Figure 4, the flap (12) is connected to both sides of the desk panel of the class

Chair embodiment 1 (foldable chair). See Figure 10. There is a slide bar that can slide up and down between the brackets on both sides of the chair. The left side of the slide bar is connected by a hinge, and the right side is embedded in the slide rail of the other side bracket. There is a locking device between the chair bracket and the seat board. There are slide grooves on the bottom surface of the seat board of the chair. The back of the chair is connected with the panel by a hinge.

Claims (4)

1. one kind can the desk and chair of hand foldable, between desk and chair two side stand, downside all has slide bar (2) to connect, wherein form revolute pair by gemel connection bottom a side stand and desk and chair panel, the pulley of opposite side cradle top is embedded in bottom desk and chair panel and forms moving sets in chute (5), it is characterized in that desk drawer base plate (1) can slide up and down and can pass from frame upper space (4), the chair back of chair can rotate 90 degree around the hinge connecting the chair back and chair seat.

2. desk according to claim 1, it is characterized in that having can along the slide bar (2) that chute (3) slides up and down between desk and chair two side stand.

3. desk according to claim 1, is characterized in that its space passed (4) of confession that desk both sides frame upper has size thickness to conform to drawer-bottom board (1).

4. desk and chair according to claim 1, is characterized in that around the desk and chair panel of side holder pivots, can having the chute (5) for bracket slide bottom panel.