A single-motor electric multi-directional adjustable desk

Abstract

The utility model belongs to the technical field of tables, and specifically relates to a single-motor electric multi-directional adjustable desk, comprising a supporting foot, an outer sleeve is installed on the supporting foot, a lifting inner tube is arranged in the outer sleeve, a supporting frame is installed on the upper end of the lifting inner tube, a desktop panel which can be moved forwards and backwards is arranged on the supporting frame, a power source is installed in the supporting foot, a screw is installed on the output end of the power source, a nut is installed on the outer periphery of the screw, the lifting inner tube is installed on the outer periphery of the nut, a lower tooth block is installed on the upper end of the nut, the lower tooth block is sleeved on the outer periphery of the screw, and an upper tooth block for meshing with the lower tooth block is installed on the upper end of the screw. The utility model adopts a single-motor controlled design, and raises the desktop panel to facilitate the placement of a recliner for students to lie flat during lunch break, so as to realize lying under the desk for lunch break and reasonably utilize space, and by moving the desktop panel backwards, more space is left for the head, effectively preventing bumps, and providing better comfort for students during lunch break.

Description

Technical Field

[0001] The utility model relates to the technical field of tables, in particular to an electric multi-directional adjustable desk. Background Art

[0002] Tables are widely used in daily life, work and study, but the height of traditional tables is fixed and cannot be used by people of different heights. Sitting for a long time will affect people's health. Therefore, lift tables that can take into account the height of sitting and standing positions have come into being. For example, the Chinese invention patent with publication number CN113854736A discloses an electric lift table that drives the table top to move up and down through a lifting column to adjust the position of the table top in the vertical direction to meet the user's usage needs.

[0003] However, the prior art can only adjust the lifting and lowering of the table top, but cannot adjust the front and rear positions of the table top, so the structure needs to be further improved. Utility Model Content

[0004] The utility model aims to provide a single-motor electric multi-directional adjustable desk, which solves the problem that the front and rear positions of the desk board cannot be adjusted through upper and lower gear blocks.

[0005] The purpose of the utility model is achieved as follows: a single-motor electric multi-directional adjustable desk, comprising a supporting foot, an outer sleeve installed on the supporting foot, a lifting inner tube arranged in the outer sleeve, a supporting frame installed on the upper end of the lifting inner tube, a desktop panel that can move forwards and backwards is arranged on the supporting frame, a power source is installed in the supporting foot, a screw is installed at the output end of the power source, a nut is installed at the outer periphery of the screw, the lifting inner tube is installed at the outer periphery of the nut, a lower tooth block is installed at the upper end of the nut, the lower tooth block is sleeved on the outer periphery of the screw, an upper tooth block for meshing with the lower tooth block is installed at the upper end of the screw, an inner driving tube is installed at the outer periphery of the lower tooth block, a gear is installed at the upper end of the inner driving tube, and a rack matching the gear is installed on the side of the desktop panel.

[0006] Preferably, a fixing portion is formed at the upper end of the screw rod, an upper top plate is installed on the outer periphery of the upper end of the fixing portion, a movable upper tooth block is installed on the outer periphery of the fixing portion, a spring is abutted between the upper tooth block and the upper top plate, and a gap is reserved between the upper tooth block and the upper top plate for the upper tooth block to move.

[0007] Preferably, the lower end surface of the upper gear block is formed with gear tooth 1, and the upper end surface of the lower gear block is formed with gear tooth 2 that matches gear tooth 1.

[0008] Preferably, a sleeve is installed between the lower tooth block and the screw rod, and a plurality of latch teeth 1 are formed on the outer periphery of the sleeve, and a plurality of latch teeth 2 are formed on the lower end surface of the lower tooth block to cooperate with the latch teeth 1 to limit the rotation of the lower tooth block, and a top cover is installed on the upper end of the nut, and a supporting portion for the latch teeth 2 to abut against is formed on the upper end surface of the top cover, and when the nut drives the top cover to move upward, the lower tooth block is pushed to move to the side away from the latch teeth 1 to release the restriction on the rotation of the lower tooth block.

[0009] Preferably, a connecting column is formed in the top cover, connecting parts are formed at both ends of the sleeve, connecting holes for being sleeved on the outer periphery of the connecting column are formed in the connecting parts, and fastening holes for inserting the connecting column are formed on both sides of the nut.

[0010] Preferably, the supporting foot includes a left transverse tube and a right transverse tube, screws are respectively installed in the left transverse tube and the right transverse tube, the outer sleeves are respectively installed on the left transverse tube and the right transverse tube, a connecting tube is connected between the left transverse tube and the right transverse tube, a linkage shaft is arranged in the connecting tube, one end of the linkage shaft is connected to the power source, and the other end of the linkage shaft is connected to the screw through a transmission box, so as to drive the two screws to rotate simultaneously.

[0011] Preferably, a table frame is installed on the lower end surface of the table top panel, a hook is installed on the side of the table top panel, a drawer is installed on the lower end surface of the table frame, a rack and a slide rail 1 are respectively installed on the side of the table frame, a slide rail 2 is slidably arranged in the slide rail 1, and one side of the slide rail 2 is fixedly connected to the support frame.

[0012] Preferably, a clamping block 1 is formed on the outer periphery of the nut, and a clamping hole 1 for clamping the clamping block 1 is opened on the side wall of the lifting inner tube.

[0013] Preferably, a second clamping block is formed on the outer circumference of the lower tooth block, and a second clamping hole for clamping the second clamping block is formed on the side wall of the inner driving tube.

[0014] Preferably, a sliding sleeve is provided between the outer sleeve and the lifting inner tube, and rollers for contacting the outer side wall of the lifting inner tube are respectively installed on both sides of the sliding sleeve.

[0015] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0016] The utility model is designed with single motor control and is suitable for use during school lunch breaks. The desktop panel is raised to expand the space under the desk to facilitate the placement of a reclining chair for students to lie down during lunch breaks, so that students can lie down under the desk to take lunch breaks, thereby making rational use of space. The desktop panel is moved backward to leave more space for the head, effectively preventing bumps and providing better comfort for students during lunch breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure after adjustment of the utility model.

[0019] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the internal components after the lifting inner tube is raised.

[0023] Figure 7 It is a schematic diagram of the structure when the nut, inner drive tube and top cover are assembled.

[0024] Figure 8 It is a schematic diagram of the structure when the nut, inner drive tube and top cover are separated.

[0025] Fig. 9 It is a schematic diagram of the structure when the screw, inner drive tube and upper gear block are separated.

[0026] Fig.10 It is a schematic diagram of the exploded structure of some parts of the utility model.

[0027] Figure numerals: 1-support foot; 1a-left transverse tube; 1b-right transverse tube; 1c-connecting tube; 2-outer sleeve; 3-lifting inner tube; 4-support frame; 5-desktop; 6-power source; 7-screw; 8-nut; 9-lower tooth block; 9a-gear two; 9c-grip two; 10-upper tooth block; 10a-gear one; 11-inner driving tube; 12-gear; 13-rack; 14-fixing part; 15-upper top plate; 16-spring; 17-gap one; 18-sleeve; 19-grip one; 21-top cover; 22-resting part; 23-connecting column; 24-connecting part; 25-connecting hole; 26-fastening hole; 27-linkage shaft; 28-transmission box; 29-desk frame; 30-hook; 31-chest; 32-slide rail one;

[0028] 33-slide rail 2; 34-block 1; 35-hole 1; 36-block 2; 37-hole 2; 38-slide sleeve; 40-roller. DETAILED DESCRIPTION

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-10As shown, a single-motor electric multi-directional adjustable desk includes a supporting foot 1, an outer sleeve 2 is installed on the supporting foot 1, a lifting inner tube 3 is arranged in the outer sleeve 2, a supporting frame 4 is installed on the upper end of the lifting inner tube 3, and a desktop panel 5 which can move forward and backward is arranged on the supporting frame 4, a power source 6 is installed in the supporting foot 1, the power source 6 is a motor, a screw 7 is installed on the output end of the power source 6, a nut 8 is installed on the outer periphery of the screw 7, the lifting inner tube 3 is installed on the outer periphery of the nut 8, a lower tooth block 9 is installed on the upper end of the nut 8, the lower tooth block 9 is sleeved on the outer periphery of the screw 7, an upper tooth block 10 for meshing with the lower tooth block 9 is installed on the upper end of the screw 7, an inner driving tube 11 is installed on the outer periphery of the lower tooth block 9, a gear 12 is installed on the upper end of the inner driving tube 11, and a rack 13 matching the gear 12 is installed on the side of the desktop panel 5.

[0031] Combination Figure 1 and Figure 2 This desk is mainly suitable for school lunch breaks. By raising the desktop, the space under the desk is expanded to facilitate the placement of reclining chairs for students to lie down during their lunch breaks. This allows students to lie down under the desk for their lunch breaks, making rational use of space. By moving the desktop backward, more space is left for the head, effectively preventing bumps and providing better comfort for students during their lunch breaks.

[0032] The utility model adopts the design of the upper and lower gear blocks, so that in actual use, when the motor is running, the lifting inner tube 3 is driven to rise through the cooperation of the screw and nut, so as to realize the lifting of the desktop panel 5. When the nut 8 moves upward on the outer periphery of the screw 7, it will continue to push the upper lower gear block 9 and other components to move upward at the same time. When the lower gear block 9 moves to the upper end of the screw 7 and meshes with the upper gear block 10, the screw will drive the inner drive tube 11 to rotate through the upper gear block 10 and the lower gear block 9 at the same time, and then the gear 12 at the upper end of the inner drive tube 11 and the rack 13 installed on the side of the desktop panel 5 cooperate to realize the front and back movement of the desktop, so that the utility model can realize the height adjustment of the desktop panel 5 and the front and back position adjustment of the desktop panel 5 through the design of a single motor, and the structure is simple and the cost is low.

[0033] The motors in each table can be remotely and centrally controlled through the existing control system, so that lunch break mode can be activated with one click.

[0034] Combination Figure 5 and Fig. 9A fixing portion 14 is formed at the upper end of the screw rod 7, an upper top plate 15 is installed on the outer periphery of the upper end of the fixing portion 14, and a movable upper tooth block 10 is installed on the outer periphery of the fixing portion 14. When the screw rod 7 rotates, the upper top plate 15 and the upper tooth block 10 will be driven to rotate simultaneously through the fixing portion 14. A spring 16 is abutted between the upper tooth block 10 and the upper top plate 15, and a gap 17 is reserved between the upper tooth block 10 and the upper top plate 15 for the upper tooth block 10 to move.

[0035] In the actual work process, Figure 6 When the nut 8 pushes the lower tooth block 9 and the upper tooth block 10 to abut against each other to form a meshing state, the screw can drive the upper top plate 15, the upper tooth block 10, the lower tooth block 9, the inner driving tube 11 and the gear 12 to rotate through the fixing part 14, thereby realizing the control of the position movement of the desktop panel. At the same time, the nut 8 will continue to push the lower tooth block 9 and the upper tooth block 10 to move upward. Therefore, a gap 17 is reserved between the upper tooth block 10 and the upper top plate 15 for the upper tooth block 10 to continue to move. The spring 16 can keep the lower end gear tooth 10a of the upper tooth block 10 against the upper end gear tooth 29a of the lower tooth block 9. The movement position of the nut 8 can be limited by the upper top plate 15, and when the upper end face of the upper tooth block 10 abuts against the upper top plate 15, the position adjustment of the desktop panel also moves into place.

[0036] Combination Figure 8 and Fig. 9 The lower end surface of the upper gear block 10 is formed with a gear tooth 10a, and the upper end surface of the lower gear block 9 is formed with a gear tooth 2 9a that cooperates with the gear tooth 10a, so as to realize the meshing transmission between the two gear blocks.

[0037] Combination Figure 4 , Figure 7 and Figure 8 A shaft sleeve 18 is installed between the lower tooth block 9 and the screw rod 7. Therefore, when the screw rod 7 rotates, the lower tooth block 9 does not rotate with the rotation of the screw rod 7, and a plurality of latch teeth 19 are formed on the outer periphery of the shaft sleeve 18. The lower end face of the lower tooth block 9 is formed with a plurality of latch teeth 9c that cooperate with the latch teeth 19. In the initial state, the latch teeth 19 are meshed with the latch teeth 29c, thereby further limiting the rotation of the lower tooth block 9 to fix the position of the desktop panel. During normal use, the front and rear positions of the desktop panel will not move at will. A top cover 21 is installed on the upper end of the nut 8. The upper end face of the top cover 21 is formed with a supporting portion 22 for the latch teeth 29c to abut against. When the nut 8 moves upward, the nut simultaneously drives the top cover 21 to move upward, and pushes the lower tooth block 9 to move to the side away from the latch teeth 19 through the supporting portion 22 to release the restriction on the rotation of the lower tooth block 9.

[0038] Combination Figure 6 and Figure 8A connecting column 23 is formed in the top cover 21, and connecting parts 24 are respectively formed at both ends of the sleeve 18. A connecting hole 25 for sleeved on the outer periphery of the connecting column 23 is opened in the connecting part 24. Therefore, when the top cover 21 pushes the lower gear block 9 to move, the sleeve 18 will not move accordingly. Fastening holes 26 for inserting the connecting column 23 are respectively opened on both sides of the nut 8, thereby realizing a fixed connection between the top cover 21 and the nut 8.

[0039] Combination Figure 1 , Figure 2 and Figure 3 The supporting foot 1 includes a left transverse tube 1a and a right transverse tube 1b, and screw rods 7 are respectively installed in the left transverse tube 1a and the right transverse tube 1b. The two screw rods 7 rotate synchronously, so that the force on both sides of the desktop panel is uniform and more stable when moving. The outer sleeve 2 is respectively installed on the left transverse tube 1a and the right transverse tube 1b. A connecting tube 1c is connected between the left transverse tube 1a and the right transverse tube 1b. A linkage shaft 27 is arranged in the connecting tube 1c. One end of the linkage shaft 27 is connected to the power source 6, and the other end of the linkage shaft 27 is connected to the screw rod 7 through a transmission box 28, so as to drive the two screw rods 7 to rotate simultaneously.

[0040] Combination Figure 5 and Fig.10 A table frame 29 is installed on the lower end surface of the table top panel 5, and a hook 30 is installed on the side of the table top panel 5. The space on the side of the table can be used to hang schoolbags for convenient storage. A drawer cabinet 31 is installed on the lower end surface of the table frame 29, and a rack 13 and a slide rail 1 32 are installed on the side of the table frame 29 respectively. A slide rail 2 33 is slidably arranged in the slide rail 1 32, and one side of the slide rail 2 33 is fixedly connected to the support frame 4, thereby ensuring the stable movement of the table top panel 5.

[0041] A clamping block 34 is formed on the outer periphery of the nut 8 , and a clamping hole 35 for clamping the clamping block 34 is opened on the side wall of the lifting inner tube 3 , so as to realize the connection between the lifting inner tube 3 and the nut 8 .

[0042] A second clamping block 36 is formed on the outer periphery of the lower gear block 9 , and a second clamping hole 37 for the second clamping block 36 to be clamped is opened on the side wall of the inner driving tube 11 , thereby realizing the connection between the inner driving tube 11 and the lower gear block 9 .

[0043] A sliding sleeve 38 is provided between the outer sleeve 2 and the lifting inner tube 3, and rollers 40 for contacting the outer wall of the lifting inner tube 3 are respectively installed on both sides of the sliding sleeve 38, thereby reducing the friction between the outer sleeve 2 and the lifting inner tube 3 and improving the stability during sliding.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A single-motor electric multi-directional adjustable desk, characterized in that: The invention comprises a support foot (1), an outer sleeve (2) is installed on the support foot (1), a lifting inner tube (3) is arranged inside the outer sleeve (2), a support frame (4) is installed on the upper end of the lifting inner tube (3), a table top (5) which can move forward and backward is arranged on the support frame (4), a power source (6) is installed in the support foot (1), a screw rod (7) is installed on the output end of the power source (6), a nut (8) is installed on the outer periphery of the screw rod (7), and a screw rod (8) is installed on the outer periphery of the nut (8). The lifting inner tube (3) is provided, a lower tooth block (9) is installed at the upper end of the nut (8), the lower tooth block (9) is sleeved on the outer periphery of the screw rod (7), an upper tooth block (10) for meshing with the lower tooth block (9) is installed at the upper end of the screw rod (7), an inner driving tube (11) is installed at the outer periphery of the lower tooth block (9), a gear (12) is installed at the upper end of the inner driving tube (11), and a rack (13) matching with the gear (12) is installed on the side of the desktop panel (5).

2. The single-motor electric multi-directional adjustable desk according to claim 1 is characterized in that: The upper end of the screw rod (7) is formed with a fixing portion (14), the outer periphery of the upper end of the fixing portion (14) is mounted with an upper top plate (15), the outer periphery of the fixing portion (14) is mounted with a movable upper tooth block (10), a spring (16) is abutted between the upper tooth block (10) and the upper top plate (15), and a gap (17) is reserved between the upper tooth block (10) and the upper top plate (15) for the upper tooth block (10) to move.

3. The single-motor electric multi-directional adjustable desk according to claim 2 is characterized in that: The lower end surface of the upper gear block (10) is formed with gear tooth one (10a), and the upper end surface of the lower gear block (9) is formed with gear tooth two (9a) that matches gear tooth one (10a).

4. The single-motor electric multi-directional adjustable desk according to claim 1 is characterized in that: A shaft sleeve (18) is installed between the lower tooth block (9) and the screw rod (7), and a plurality of first latch teeth (19) are formed on the outer periphery of the shaft sleeve (18). A plurality of second latch teeth (9c) cooperating with the first latch teeth (19) are formed on the lower end surface of the lower tooth block (9) to limit the rotation of the lower tooth block (9). A top cover (21) is installed on the upper end of the nut (8), and a supporting portion (22) for the second latch teeth (9c) to abut against is formed on the upper end surface of the top cover (21). When the nut (8) drives the top cover (21) to move upward, the lower tooth block (9) is pushed to move to a side away from the first latch teeth (19) to release the restriction on the rotation of the lower tooth block (9).

5. The single-motor electric multi-directional adjustable desk according to claim 4 is characterized in that: A connecting column (23) is formed in the top cover (21), connecting parts (24) are formed at both ends of the shaft sleeve (18), and connecting holes (25) for sleeve-mounted on the outer circumference of the connecting column (23) are formed in the connecting parts (24), and fastening holes (26) for inserting the connecting column (23) are formed on both sides of the nut (8).

6. The single-motor electric multi-directional adjustable desk according to claim 1 is characterized by: The support foot (1) comprises a left transverse tube (1a) and a right transverse tube (1b), wherein screw rods (7) are respectively installed in the left transverse tube (1a) and the right transverse tube (1b), wherein the outer sleeve (2) is respectively installed on the left transverse tube (1a) and the right transverse tube (1b), wherein a connecting tube (1c) is connected between the left transverse tube (1a) and the right transverse tube (1b), wherein a linkage shaft (27) is arranged in the connecting tube (1c), wherein one end of the linkage shaft (27) is connected to a power source (6), and the other end of the linkage shaft (27) is connected to the screw rod (7) via a transmission box (28), thereby driving the two screw rods (7) to rotate simultaneously.

7. The single-motor electric multi-directional adjustable desk according to claim 1 is characterized in that: The lower end surface of the table top plate (5) is installed with a table frame (29), the side surface of the table top plate (5) is installed with a hook (30), the lower end surface of the table frame (29) is installed with a drawer cabinet (31), the side surfaces of the table frame (29) are respectively installed with a rack (13) and a first slide rail (32), a second slide rail (33) is slidably arranged in the first slide rail (32), and one side of the second slide rail (33) is fixedly connected to the support frame (4).

8. The single-motor electric multi-directional adjustable desk according to claim 1 is characterized by: A clamping block (34) is formed on the outer periphery of the nut (8), and a clamping hole (35) for clamping the clamping block (34) is provided on the side wall of the lifting inner tube (3).

9. The single-motor electric multi-directional adjustable desk according to claim 1, characterized in that: A second clamping block (36) is formed on the outer periphery of the lower tooth block (9), and a second clamping hole (37) for clamping the second clamping block (36) is provided on the side wall of the inner driving tube (11).

10. The single-motor electric multi-directional adjustable desk according to claim 1, characterized in that: A sliding sleeve (38) is provided between the outer sleeve (2) and the lifting inner tube (3), and rollers (40) for contacting the outer side wall of the lifting inner tube (3) are respectively installed on both sides of the sliding sleeve (38).

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