CN204071042U - The rotatable desk and chair of integral type - Google Patents

Abstract

The one-piece rotatable desk and chair is composed of a mounting base, a chair support frame, a desk, a drawer, a seat surface, and an armrest. , thrust bearing, and chair support frame are connected to form a rotating mechanism; desks, desk connecting rods, connecting rod upper and lower pins, and chair support frames are connected to form a four-bar mechanism; seat seat surface, chair surface connecting rod, chair surface connecting rod upper and lower pins, The chair pillar frame is connected to form a four-bar mechanism; the desk, the auxiliary drawer board, the parallelogram connecting rod, and the rotating pin are connected to form a parallel four-bar mechanism; the armrest, the armrest limit, the armrest pin, and the chair pillar frame are connected to form a rotating mechanism.

Description

Integrated rotatable desk and chair

technical field

The utility model of the integrated rotatable desk and chair relates to auditoriums and assembly places, in particular to teaching equipment for school classrooms and laboratories.

Background technique

At present, the desks and chairs in teaching equipment generally have two structures: one is that the desk and the stool are matched in one piece, and the desk and the drawer are connected to the desk bracket as a whole, which cannot be folded, and the stool and chair cannot be moved arbitrarily; The second is that the desk and the chair are fixed on the ground as a whole in a large area, and the desk and the drawer are connected on the desk support as a whole, and cannot be folded. The chair can be folded through the middle hinge to improve the space utilization rate. The combination of desks and drawers of the above two structures cannot be folded, and the distance between the chair surface and the desk is still very narrow after being turned over, which does not fully improve the space utilization rate, resulting in occupying a large amount of space, which not only causes students to have trouble getting in and out. Due to the small space, it is inconvenient to go in and out from left and right, and there are relatively large dead ends in cleaning classrooms and tables and chairs. On the other hand, the desks and chairs cannot be rotated, which is extremely inconvenient to enter and exit. Students must first go around or climb over the corridor passage from their own position to the front row or back row, which is very inhumane.

Contents of the invention

The purpose of this utility model is: to overcome the deficiency of the above-mentioned existing desks and chairs, according to the principle of the plane four-bar mechanism and the characteristics of the touch bead lock, improve the existing desks and chairs structurally so that the space utilization rate can be fully improved, A rotatable one-piece rotatable desk and chair.

The technical scheme adopted in the utility model is as follows.

The utility model improves the structure of the existing chair surface on the chair, and the chair surface is folded through a hinge four-bar mechanism. One end of the chair surface is connected to the middle end of the desk column bracket through a hinge, and the other end is connected to the chair surface connecting rod through a pin to form a rocker. The chair surface connecting rod includes a connecting rod and a connecting rod, and the other end of the chair surface connecting rod Connect on the lower end of the desk post bracket. That is, the chair surface, the chair surface connecting rod, and the desk post support form a four-bar mechanism, and there is a group on both sides of the chair surface.

The utility model improves the structure that the desk cannot be folded on the desk, and the desk is folded through a hinge four-bar mechanism. The desk is a hollow box structure with a small thickness. A bead lock is installed inside the desk box. On the desk box is an overturned desk cover. The desk cover has a protruding pin corresponding to the bead lock. The lower end of the desk box is connected with the upper end of the desk column bracket by a hinge, and the other end is connected with the connecting rod of the desk box through a pin to form a rocker. The connecting rod of the desk box includes a connecting rod and a connecting rod, and the connecting rod of the desk box The other end is passed through the middle end of the pin and the desk post bracket. That is, the desk box, the desk box connecting rod, and the desk column support form a four-bar mechanism, and there is a group on both sides of the desk box.

On the drawer, the utility model improves the fact that the drawer is integrally connected on the desk and cannot be folded, and there are two drawers in total. The first is the hollow part in the desk box; the second is that an auxiliary drawer is connected under the desk box through two equal-length parallel connecting rods, that is, the desk box, the equal-length parallel connecting rods, and the auxiliary drawer form a chair parallelogram mechanism. There are one set on each side of the table box.

The utility model improves the non-rotatable desk column bracket on the desk column bracket. The middle part of the end is a circular structure, the middle part of the circle is a circular stepped through hole, the lower part of the circular through hole is a big hole, a thrust bearing is installed in the big hole, and a protruding pin is respectively installed on both sides of the lower end surface of the disc. Under the support of the desk column is a fixed base with an I-shaped structure. There is a touch bead on both sides of the base. The middle of the base is a disc structure. The middle of the disc is a center through hole. One-third of an incompletely circular groove. The base and the column support are connected by bolts and fixed by nuts.

The beneficial effect of adopting above scheme the utility model is: desk box, chair surface, handrail, desk post support integrated structure, chair surface is in front, and desk box is used as the desk of last classmate. When the four-bar mechanism is at the dead point when in use, the desk box and the chair surface can be unfolded like ordinary desks and chairs. The auxiliary drawer can hold a large number of books. When folding, the chair surface, the desk box and the desk column bracket can be folded Basically on the same straight line, the desk box can drive the drawers to fold together, and the hollow part in the desk box can ensure that the books in the folded desk box will not fall out, fully improve the space utilization rate, facilitate cleaning, and facilitate left and right entry and exit. The desk post support can drive the upper structure of the desk post support to rotate together, which is also convenient for front and back entry and exit.

Description of drawings:

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

Figure 1 is an overall view of the integrated rotatable desk and chair with the desk cover opened.

Figure 2 is an overall view when the integrated rotatable desk and chair is unfolded.

Fig. 3 is a folded view of the integrated rotatable desk and chair desk box.

Fig. 4 is a folded view of the integrated rotatable desk and chair seat and stool.

Figure 5 and Figure 6 are the overall folding diagrams of the integrated rotatable desk.

Figure 7 is a 90° diagram of the integrated rotatable desks and chairs as a whole folded and rotated.

Figure 8 is a structural diagram of the armrest of the integrated rotatable desk and chair.

Figure 9 and Figure 10 are structural diagrams of the integrated T-shaped rotating desk and chair base and column bracket.

In the figure 1. Installation base, 2. Chair pillar frame, 3. Chair surface hinge, 4. Armrest limit, 5. Desk connecting rod, 6. Drawer, 7. Parallelogram connecting rod, 8. Desk, 9. Desk bead lock, 10. Desk cover, 11. Desk box hinge, 12. Chair back, 13. Armrest pin, 14. Armrest, 15. Seat surface, 16. Chair connecting rod, 17. Bolt, 18. Nut, 19. Desk connecting rod lower pin, 20. Desk connecting rod upper pin, 21. Chair surface connecting rod lower pin, 22. Chair surface connecting rod upper pin, 23. Elastic touch ball, 24. Thrust bearing , 25. Base pin.

Implementation method:

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

One-piece rotatable desks and chairs, as shown in the figure: one end of the seat surface (15) is connected to the middle end of the chair support frame (2) through the seat surface hinge (3), and the other end is connected through the upper pin of the seat surface connecting rod (22 ) is connected with the chair surface connecting rod (16), and the other end of the chair surface connecting rod (16) is connected with the lower end of the chair support frame (2) through the chair surface connecting rod lower pin (21), that is, the seat seat surface (15), the seat surface Connecting rod (16), chair support frame (2) forms two groups of four bar mechanisms. Turn the seat surface connecting rod (16) to drive the seat surface (15) to rotate together. When the four-bar mechanism is turned to the dead point position as shown in Figure 1, Figure 2, and Figure 3, the seat surface connecting rods (16) are collinear, and the seat surface (15) is just perpendicular to the chair support frame (2); When the seat surface (15) is in contact with the chair pillar frame (2), the chair pillar frame (2) hinders its rotation, as shown in Figure 4, Figure 5, and Figure 6, the seat surface (15) is basically in contact with the desk column bracket (2) Be in the same plane.

The desk (8) is an internal hollow box-packed structure with a desk bumper lock (9) inside and a reversible desk cover (10) at the top, and the desk bumper lock (9) can lock the desk cover (10), the hollow box structure inside the desk (8) can hold a small amount of books and stationery. Below the desk (8) connects the drawer (6) by the parallelogram connecting rod (7), i.e. the desk (8), the parallelogram connecting rod (7), and the drawer (6) forms a parallelogram mechanism. One end of the desk (8) is connected with the upper end of the chair support frame (2) through the desk hinge (11), and the other end of the desk (8) is connected with the desk connecting rod (5) through the upper pin (19) of the desk connecting rod. The other end of the desk connecting rod (5) is connected with the middle section of the chair pillar frame (2) by the lower pin (19) of the desk connecting rod. Promptly desk box 8), desk connecting rod (5), chair support frame (2) forms another four-bar mechanism. Rotating the desk connecting rod (5) can drive the desk (8) to rotate together. When the four-bar mechanism is in the dead position, as shown in Figure 1, Figure 2, and Figure 4, the desk (8) rotates perpendicular to the chair pillar frame (2), And the drawer (6) is put down naturally; When the desk (8) rotates and hinders the chair support frame (2), the desk (8) cannot rotate, as shown in Figure 3, Figure 5, and Figure 6, the desk (8), drawer (6) The basic folding is on the same plane as the desk post support (2). And lock the desk cover (10), it is guaranteed that the internal stationery of the desk (8) does not fall out.

The lower end of the chair pillar frame (2) is connected with the installation base (1) through bolts (17) and nuts (18), as shown in Figure 9 and Figure 10. The chair post frame (2) is enclosed within on the bolt (17), is rotatable by the thrust bearing (24), and the nut (18) can fix the installation base (1) and the desk post support (2). The chair support frame (2) can be locked when the elastic touch beads (23) are in the concave holes on both sides of the bottom end surface of the chair support frame (2). Under the action of external force, the elastic touch ball (23) breaks through the concave hole, and the chair pillar frame (2) can rotate with the bolt (17) as the axis. Movement in one-fifth of the groove. Make sure the desk post bracket only rotates 90 degrees. The rotation of the chair pillar frame (2) drives the overall structure of the chair body to rotate together, as shown in Figure (7).

The armrest (14) is connected to the middle end of the chair pillar frame (2) by the armrest pin (13), and there is an L-shaped armrest limiter (4) device beside it, as shown in Figure 8. Rotate handrail (14,) can make handrail (14) be in two kinds of positions, and the one, is parallel with desk post support (2), and the 2nd, is vertical with desk post support (2). the

Claims (2)

1. The one-piece rotatable desk and chair is composed of the installation base, the chair support frame, the desk, the drawer, the seat surface, and the armrest. The base pin, the thrust bearing, and the chair pillar frame are connected to form a rotation mechanism; the desk, the desk connecting rod, the upper and lower pins of the connecting rod, and the chair pillar frame are connected to form a four-bar mechanism; the seat surface, the chair surface connecting rod, and the chair surface connecting rod up and down The pin and the chair pillar frame are connected to form a four-bar mechanism; the desk, the auxiliary drawer board, the parallelogram connecting rod and the rotating pin are connected to form a parallel four-bar mechanism; the armrest, the armrest limit, the armrest pin, and the chair pillar frame are connected to form a rotating mechanism. 2. The integrated rotatable desk and chair according to claim 1, characterized in that: the seat surface can be folded and unfolded with the rotation of the connecting rod of the seat surface, and when the four-bar mechanism is at the dead point position, the seat can be The horizontal position of the seat surface, when the connecting rod of the four-bar mechanism is shifted to the plane of the chair support frame, the folded seat surface is on the same plane as the chair support support. 3. The integrated rotatable desk and chair according to claim 1, characterized in that: the desk can be folded and unfolded with the rotation of the connecting rod on the seat surface, and when the four-bar mechanism is at the dead point, the seat can be When the connecting rod of the four-bar mechanism is shifted to the plane of the chair support frame, the folded desk is on the same plane as the chair support support. 4. The one-piece rotatable desk and chair according to claim 1, characterized in that: the inside of the desk is a hollow box structure, the desk and the drawer can be rotated and folded together with the four-bar mechanism; the desk is equipped with a reversible desk The cover and the inside of the desk are equipped with a desk bead lock, which prevents books and pens from falling out when the desk is folded. 5. The one-piece rotatable desk and chair according to claim 1, characterized in that: the bottom of the desk and chair pillar frame with a disc structure is used to connect and cooperate with the base and the limit base pin to form a 90-degree rotating structure. When the surface and the desk are folded, they are rotated and connected to the pillar frame of the desk and chair, so that the overall structure of the chair body can be shifted by 90 degrees. 6. The one-piece rotatable desk and chair according to claim 1, characterized in that: the armrest can realize horizontal and vertical position change under the action of the armrest pin center and armrest limit.