Student desk capable of changing desktop height and increasing desktop area

Abstract

The utility model relates to the technical field of student desks, in particular to a student desk capable of changing the height of a desk top and increasing the area of the desk top. Two outer guide rails are symmetrically installed below the bottom plate, the cross positions of the two supporting legs are rotationally connected through a rotating shaft, supporting rods are rotationally hinged to the interiors of the two lower side edge grooves, torsional springs are arranged at the positions of rotating hinge shafts of the supporting rods and the lower side edge grooves, and when a connecting rod drives a support to move, inner guide rails can be driven to slide in the outer guide rails. When the supporting rod swings to a horizontal state, the bottom end of the supporting rod can be embedded into the lower side edge groove, the overturning plate and the bottom plate can be located on the same horizontal plane, the end of the first pin hole extends to be arranged in the second pin hole, and therefore the height of the table top can be adjusted. Compared with a traditional desk, the desk has the advantages that the desk area is increased, the height of the desk is adjusted, and the desk is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of student desks, in particular to a student desk capable of changing the height of a desk top and increasing the area of ​​the desk top. Background Art

[0002] Students basically use desks when studying and doing homework. They need to do their homework and place textbooks and other items on the desks. Students also lie on the desks to rest during breaks. Existing desks have more and more functions.

[0003] A patent with announcement number CN 208510324 U discloses a student desk, including a panel and a bracket plate. The bracket plate is provided with a guide structure, and a baffle is movably matched in the guide structure. The baffle can be raised and lowered along the guide structure and protrude upward from the panel. The bracket plate is provided with a locking member, which acts on the baffle to fix the position of the baffle relative to the bracket plate. When the student needs to do homework, the baffle is raised. The baffle is located on the left and right sides of the panel, and the student is located between the baffles on the left and right sides. Therefore, during the homework process, the student's attention will not be affected by the surrounding environment. After the homework is completed, the baffle is lowered to be flush with the panel, just like an ordinary desk, to achieve the effect of anti-interference.

[0004] However, since the existing desks have fixed heights and areas, students sometimes need to communicate and cooperate when studying, and it is inconvenient for multiple students to sit around the same desk, and it is inconvenient to change the desk according to usage, resulting in poor applicability. Therefore, in order to solve the above problems, a student desk with adjustable desktop height and increased desktop area is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and to address the problems existing in the prior art, the utility model provides a student desk capable of changing the height of the desktop and increasing the area of ​​the desktop.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the student desk of the utility model which can change the height of the desktop and increase the desktop area comprises a bottom plate; two outer guide rails are symmetrically installed under the bottom plate, inner guide rails are respectively slidably arranged in the two outer guide rails, and support components are respectively arranged on the two outer guide rails and the two inner guide rails;

[0007] The support assembly includes two cross-arranged legs, and the cross position of the two legs is rotatably connected by a rotating shaft, the top end of one of the legs is rotatably mounted on the side of the end of the leg opposite to the inner guide rail, and the top end of the other leg is rotatably mounted on the side of the end of the inner guide rail, and the bottom ends of the two legs are both equipped with rollers;

[0008] The bottom plate is symmetrically provided with two guide grooves, and supports are installed on the ends of the two inner guide rails that are slidably arranged in the outer guide rails, and the supports are penetrated and arranged in the guide grooves, and connecting rods are rotatably installed on the two supports respectively, and a flip plate is arranged in parallel on the bottom plate, and two fitting grooves are symmetrically provided at the lower part of the flip plate and the upper part of the bottom plate respectively, and the top ends of the two connecting rods are respectively tilted and rotatably installed in the two fitting grooves provided at the bottom of the flip plate;

[0009] The bottom plate is provided with lower side grooves at two corners on the side opposite to the support, and support rods are rotatably hinged in the two lower side grooves, and torsion springs are arranged at the rotation hinge axes of the support rods and the lower side grooves. Upper side grooves are provided at two low corners corresponding to the flip plate and the two lower side grooves, and the top ends of the two support rods are respectively rotatably hinged in the two upper side grooves. A vertical plate is rotatably installed on a side of the bottom plate opposite to the lower side grooves, which cooperates to increase the desktop area and adjust the desktop height. It is more convenient to use than traditional desks.

[0010] Preferably, the outer guide rail is parallel to the base plate, the inner guide rail is parallel to the guide groove, the two connecting rods are parallel to each other, the two engaging grooves on the base plate coincide with the two guide grooves, and the two engaging grooves under the flip plate correspond to the two engaging grooves on the base plate, and the support rod is perpendicular to the base plate and the flip plate.

[0011] Preferably, a support plate for supporting the upright plate is installed at the bottom of the same side of the bottom plate and the upright plate, and the upright plate is sealed at the open end surface between the bottom plate and the flip plate.

[0012] Preferably, a slot is provided on the upper portion of the vertical plate, a swivel buckle is rotatably installed on the side of the flip plate facing the vertical plate, and the swivel buckle is rotatably arranged in the slot provided on the vertical plate, thereby achieving the function of fixing the vertical plate.

[0013] Preferably, a No. 1 pin hole and a No. 2 pin hole are respectively provided on the same side of the bottom plate and the flip plate, and the No. 1 pin hole and the No. 2 pin hole are located on the side opposite to the vertical plate. A through groove communicating with the No. 1 pin hole is provided on the bottom plate, which cooperates to achieve the function of fixing the bottom plate and the flip plate, thereby ensuring the normal use of the desktop.

[0014] Preferably, a pin rod is slidably arranged in the No. 1 pin hole, a toggle block is installed on the pin rod through a through slot, and the toggle block is slidably arranged in the through slot, and the pin rod can be inserted into the No. 2 pin hole.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model will be in a braking state and unable to rotate through the roller on the right side. Under the support of the support plate, the vertical plate will be in the same horizontal plane with the bottom plate. When the connecting rod drives the support to move, it will drive the inner guide rail to slide in the outer guide rail. The distance between the top ends of the two legs will increase. At this time, the crossing angle between the two legs will increase, thereby adjusting the height of the desktop. When the support rod swings to a horizontal state, the bottom end of the support rod will also be embedded in the lower side groove, and the flip plate will be in the same horizontal plane with the bottom plate, and the end of the No. 1 pin hole will extend and be set in the No. 2 pin hole, thereby increasing the desktop area, and the effect of increasing the desktop area and adjusting the desktop height is achieved. Compared with traditional desks, it is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0019] Figure 2 It is an enlarged schematic diagram of the main structure of the bottom plate;

[0020] Figure 3 This is an enlarged schematic diagram of the cutaway main structure of the desktop;

[0021] Figure 4 It is an enlarged schematic diagram of the main structure of the support rod;

[0022] Figure 5 It is a cutaway and enlarged schematic diagram of the main structure of the flip assembly;

[0023] Figure 6 It is an enlarged schematic diagram of the main structure of the sliding telescopic component;

[0024] Figure 7 This is an enlarged schematic diagram of the cutaway main structure of the limiting component.

[0025] In the figure: 1. bottom plate; 2. outer guide rail; 3. inner guide rail; 4. support leg; 5. roller; 6. guide groove; 7. support; 8. connecting rod; 9. flip plate; 10. fitting groove; 11. lower side groove; 12. upper side groove; 13. support rod; 14. torsion spring; 15. vertical plate; 16. support plate; 17. rotating buckle; 18. No. 1 pin hole; 19. No. 2 pin hole; 20. pin rod; 21. through groove; 22. toggle block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7As shown, a student desk capable of changing the height of a desktop and increasing the desktop area comprises a bottom plate 1; two outer guide rails 2 are symmetrically mounted under the bottom plate 1, inner guide rails 3 are slidably mounted in the two outer guide rails 2, support assemblies are respectively mounted on the two outer guide rails 2 and the two inner guide rails 3, the support assembly comprises two cross-arranged legs 4, and the cross position of the two legs 4 is rotatably connected via a rotating shaft, the top end of one of the legs 4 is rotatably mounted on the side of one end of the leg 4 opposite to the inner guide rail 3, and the top end of the other leg 4 is rotatably mounted on the inner guide rail On the side of the end of the rail 3, rollers 5 are installed at the bottom ends of the two legs 4, and the bottom plate 1 is symmetrically provided with two guide grooves 6. The two ends of the inner guide rails 3 slidably arranged in the outer guide rail 2 are both provided with supports 7, and the supports 7 are penetrated and arranged in the guide grooves 6. Connecting rods 8 are rotatably installed on the two supports 7 respectively, and a flip plate 9 is arranged in parallel on the bottom plate 1. The lower part of the flip plate 9 and the upper part of the bottom plate 1 are symmetrically provided with two fitting grooves 10, and the top ends of the two connecting rods 8 are respectively tilted and rotatably installed in the two fitting grooves 10 opened at the bottom of the flip plate 9. The bottom plate 1 is provided with lower side grooves 11 at two corners on the side opposite to the support 7, and support rods 13 are rotatably hinged in the two lower side grooves 11, and a torsion spring 14 is arranged at the rotation hinge axis of the support rods 13 and the lower side grooves 11, the flip plate 9 and the two lower side grooves 11 are provided with upper side grooves 12 at the two corresponding low corners, and the top ends of the two support rods 13 are rotatably hinged in the two upper side grooves 12 respectively, and a vertical plate 15 is rotatably installed on a side of the bottom plate 1 opposite to the lower side grooves 11, the outer guide rail 2 is parallel to the bottom plate 1, the inner guide rail 3 is parallel to the guide groove 6, the two connecting rods 8 are parallel to each other, the two fitting grooves 10 provided on the bottom plate 1 coincide with the two guide grooves 6, and the two fitting grooves 10 provided under the flip plate 9 correspond to the two fitting grooves 10 provided on the bottom plate 1, the support rods 13 are connected to the bottom plate 1 and the flip plate 9 are all perpendicular, a support plate 16 for supporting the upright plate 15 is installed at the bottom of the same side of the bottom plate 1 and the upright plate 15, the upright plate 15 is blocked at the open end surface directly between the bottom plate 1 and the flip plate 9, a card slot is opened on the upper part of the upright plate 15, a rotating buckle 17 is rotatably installed on the side of the flip plate 9 facing the upright plate 15, and the rotating buckle 17 is rotatably set in the card slot opened on the upright plate 15, a No. 1 pin hole 18 and a No. 2 pin hole 19 are respectively opened on the same side of the bottom plate 1 and the flip plate 9, and the No. 1 pin hole 18 and the No. 2 pin hole 19 are located on the side opposite to the upright plate 15, a through slot 21 communicating with the No. 1 pin hole 18 is opened on the bottom plate 1, a pin rod 20 is slidably set in the No. 1 pin hole 18, a toggle block 22 is installed on the pin rod 20 through the through slot 21, and the toggle block 22 is slidably set in the through slot 21, and the pin rod 20 can be inserted into the No. 2 pin hole 19.

[0028] During work, since the existing desks have a fixed height and area, students sometimes need to communicate and cooperate when studying, and it is inconvenient for multiple students to sit around the same desk. It is inconvenient to change it according to the usage, resulting in poor applicability. In this solution, the torsion spring 14 will always twist the support rod 13 in the initial state, so that the support rod 13 always remains in a vertical state. During normal use, the right roller 5 installed at the bottom of the two legs 4 will be in a braking state and cannot rotate, and the left roller 5 can rotate without restriction. Under the support of the support rod 13 and the connecting rod 8, the flip plate 9 will be in a horizontal state, and the flip plate 9 is parallel to the bottom plate 1. Students can use the upper surface of the flip plate 9 as a desktop. When it needs to be unfolded, first rotate it. The buckle 17 releases the restriction of the rotating buckle 17 on the vertical plate 15, so that the locking end of the rotating buckle 17 rotates upward, and then the vertical plate 15 is flipped from the vertical state to the support plate 16. At this time, under the support of the support plate 16, the vertical plate 15 will be in the same horizontal plane with the bottom plate 1, and then the flip plate 9 is flipped upward, and the rotating hinge axis of the flip plate 9 and the top of the support rod 13 is rotated counterclockwise as the axis. When the flip plate 9 is flipped upward, the support 7 will be pulled by the connecting rod 8, so that the support 7 floats in the guide groove 6 and moves to the side of the bottom plate 1 where the lower side groove 11 is opened, and the support 7 is installed on one end of the inner guide rail 3 that is slidably arranged in the outer guide rail 2. When the connecting rod 8 drives the support 7 to move, it will drive the inner guide rail 3 to move on the outer guide rail 2, and the inner guide rail 3 will extend out of the outer guide rail 2, at this time, the distance between the top ends of the two legs 4 will increase, and the two legs 4 will be connected at the intersection, and then the distance between the top ends of the two legs 4 will be increased by the outer guide rail 2 and the inner guide rail 3, and the distance between the bottom ends will also increase in the later stage. At this time, the crossing angle between the two legs 4 will increase, and the supporting height will also decrease, thereby adjusting the height of the desktop, and when the flip plate 9 is flipped to be in the same vertical plane as the support rod 13, it will be perpendicular to the bottom plate 1, and the top end of the support rod 13 will be embedded in the upper side groove 12, and at this time, when the flip plate 9 is continuously flipped, the support rod 13 will be driven to swing counterclockwise, and the support rod 13 will swing about the axis of the rotation hinge axis with the upper side groove 12 When the support rod 13 swings to a horizontal state, the bottom end of the support rod 13 will also be embedded in the lower side groove 11, and the flip plate 9 will be in the same horizontal plane as the bottom plate 1, and at this time, the flip plate 9 and the embedding groove 10 opened on the bottom plate 1 will be spliced, and the connecting rod 8 will be embedded in the spliced ​​embedding groove 10, and the No. 2 pin hole 19 will be directly opposite to the No. 1 pin hole 18, and the toggle block 22 is coordinated to drive the toggle block 22 to drive the pin rod 20 to extend out of the No. 1 pin hole 18, and the end of the No. 1 pin hole 18 is extended and set in the No. 2 pin hole 19, thereby fixing the bottom plate 1 and the flip plate 9, thereby increasing the desktop area, and achieving the effect of increasing the desktop area and adjusting the desktop height, which is more convenient to use than traditional desks.

[0029] Working principle: in the initial state, the torsion spring 14 will always twist the support rod 13, so that the support rod 13 always maintains a vertical state. In normal use, the right roller 5 installed at the bottom end of the two legs 4 will be in a braking state and cannot rotate, and the left roller 5 can rotate without restriction. Under the support of the support rod 13 and the connecting rod 8, the flip plate 9 will be in a horizontal state, and the flip plate 9 is parallel to the bottom plate 1. Students can use the upper surface of the flip plate 9 as a desktop. When it needs to be unfolded, first rotate the rotating buckle 17 to release the restriction of the rotating buckle 17 on the vertical plate 15, so that the locking end of the rotating buckle 17 rotates upward, and then flips the vertical plate 15 from the vertical state to the support plate 16. At this time, under the support of the support plate 16, the vertical plate 15 will be in the same horizontal plane with the bottom plate 1, and then the flip plate 9 will be flipped upward, and the rotating hinge axis of the flip plate 9 and the top of the support rod 13 will be rotated counterclockwise as the axis. When the flip plate 9 is flipped upward, the support 7 will be pulled by the connecting rod 8, so that the support 7 floats in the guide groove 6 and moves to the side of the bottom plate 1 where the lower side groove 11 is opened, and the support 7 is installed on one end of the inner guide rail 3 that is slidably arranged in the outer guide rail 2. When the connecting rod 8 drives the support 7 to move, it will drive the inner guide rail 3 to slide in the outer guide rail 2, and the inner guide rail 3 will extend out of the outer guide rail 2. At this time, the distance between the top ends of the two legs 4 will increase, The two legs 4 are rotatably connected at the cross position, and then the distance between the top ends of the two legs 4 is increased by the outer guide rail 2 and the inner guide rail 3. The distance between the bottom ends will also increase later. At this time, the crossing angle between the two legs 4 will increase, and the support height will also decrease, thereby adjusting the height of the desktop. When the flip plate 9 is flipped to be in the same vertical plane as the support rod 13, it will be perpendicular to the bottom plate 1. At this time, the top end of the support rod 13 will be embedded in the upper side groove 12, and when the flip plate 9 is continuously flipped, the support rod 13 will be driven to swing counterclockwise, and the support rod 13 will swing about the axis of the rotation hinge axis with the upper side groove 12. When the support rod 13 swings to a horizontal state, the support rod The bottom end of 13 will also be embedded in the lower side groove 11, and the flip plate 9 will be in the same horizontal plane with the bottom plate 1, and the embedding groove 10 opened on the flip plate 9 and the bottom plate 1 will be spliced, and the connecting rod 8 will be embedded in the spliced ​​embedding groove 10, and the No. 2 pin hole 19 will be directly opposite to the No. 1 pin hole 18, and the toggle block 22 is coordinated to drive the toggle block 22 to drive the pin rod 20 to extend out of the No. 1 pin hole 18, and the end of the No. 1 pin hole 18 is extended and set in the No. 2 pin hole 19, thereby fixing the bottom plate 1 and the flip plate 9, thereby increasing the desktop area, and achieving the effect of increasing the desktop area and adjusting the desktop height, which is more convenient to use than traditional desks.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A student desk capable of changing the height of the desktop and increasing the desktop area, characterized in that: It comprises a bottom plate (1); two outer guide rails (2) are symmetrically mounted below the bottom plate (1); inner guide rails (3) are slidably mounted inside the two outer guide rails (2); and support components are respectively mounted on the two outer guide rails (2) and the two inner guide rails (3); The support assembly comprises two cross-arranged legs (4), and the cross position of the two legs (4) is rotatably connected via a rotating shaft, the top end of one of the legs (4) is rotatably mounted on the side surface of one end of the leg (4) opposite to the inner guide rail (3), and the top end of the other leg (4) is rotatably mounted on the side surface of the end of the inner guide rail (3), and the bottom ends of the two legs (4) are both equipped with rollers (5); The bottom plate (1) is symmetrically provided with two guide grooves (6), the ends of the two inner guide rails (3) slidably provided in the outer guide rail (2) are both provided with supports (7), and the supports (7) are provided through the guide grooves (6), and connecting rods (8) are respectively rotatably provided on the two supports (7), and a flip plate (9) is provided parallel to the bottom plate (1), and two fitting grooves (10) are respectively symmetrically provided on the lower part of the flip plate (9) and the upper part of the bottom plate (1), and the top ends of the two connecting rods (8) are respectively tilted and rotatably provided in the two fitting grooves (10) provided at the bottom of the flip plate (9); The bottom plate (1) is provided with lower side grooves (11) at two corners on the side opposite to the support (7), support rods (13) are rotatably hinged in the two lower side grooves (11), and a torsion spring (14) is provided at the rotation hinge axis between the support rods (13) and the lower side grooves (11), the flip plate (9) and the two lower side grooves (11) are provided with upper side grooves (12) at two corresponding low corners, and the top ends of the two support rods (13) are respectively rotatably hinged in the two upper side grooves (12), and a vertical plate (15) is rotatably installed on a side of the bottom plate (1) opposite to the lower side grooves (11).

2. A student desk capable of changing the height of the desktop and increasing the desktop area according to claim 1, characterized in that: The outer guide rail (2) and the base plate (1) are parallel to each other, the inner guide rail (3) and the guide groove (6) are parallel to each other, the two connecting rods (8) are parallel to each other, the two engaging grooves (10) provided on the base plate (1) overlap with the two guide grooves (6), and the two engaging grooves (10) provided under the flip plate (9) correspond to the two engaging grooves (10) provided on the base plate (1), and the support rod (13) is perpendicular to both the base plate (1) and the flip plate (9).

3. A student desk capable of changing the height of the desktop and increasing the desktop area according to claim 1, characterized in that: A support plate (16) for supporting the upright plate (15) is installed at the bottom of the same side of the bottom plate (1) as the upright plate (15), and the upright plate (15) is sealed at the open end surface between the bottom plate (1) and the flip plate (9).

4. A student desk capable of changing the height of the desktop and increasing the desktop area according to claim 3, characterized in that: A slot is provided on the upper part of the vertical plate (15); a rotating buckle (17) is rotatably mounted on the side of the flip plate (9) facing the vertical plate (15); and the rotating buckle (17) is rotatably arranged in the slot provided on the vertical plate (15).

5. A student desk capable of changing the height of the desktop and increasing the desktop area according to claim 1, characterized in that: The bottom plate (1) and the flip plate (9) are provided with a first pin hole (18) and a second pin hole (19) on the same side, respectively, and the first pin hole (18) and the second pin hole (19) are located on the side opposite to the vertical plate (15), and the bottom plate (1) is provided with a through groove (21) communicating with the first pin hole (18).

6. A student desk capable of changing the height of the desktop and increasing the desktop area according to claim 5, characterized in that: A pin rod (20) is slidably arranged in the No. 1 pin hole (18), a toggle block (22) is installed on the pin rod (20) through a through slot (21), and the toggle block (22) is slidably arranged in the through slot (21), and the pin rod (20) can be inserted into the No. 2 pin hole (19).

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