180-degree rotation locking mechanism for table

Abstract

The utility model relates to a 180-degree rotation locking mechanism for a table, which comprises a supporting plate used for connecting a table top and table legs used for supporting the supporting plate, the table legs are connected with the supporting plate through a locking structure, the locking structure comprises a shell, an inner gear ring is fixedly connected to the inner wall of the shell, and the inner gear ring is fixedly connected with the supporting plate. When the table top is overturned, the adjusting rod can be inserted into the non-circular hole, due to the fact that the non-circular hole is eccentrically formed in the rotating shaft, when the adjusting rod is rotated to drive the rotating shaft to rotate, the gear can rotate to be separated from the inner gear ring under the supporting effect of the rotating shaft, and at the moment, the gear and the inner gear ring are unlocked; a user can turn over the supporting plate at any angle to adjust the angle of the table top, after adjustment is completed, the user loosens the adjusting rod, the gear resets under the action of self gravity and is locked with the inner gear ring, the table top is automatically locked, and the user can use the table top conveniently.

Description

Technical Field

[0001] This utility model belongs to the technical field of desktop flip-locking structure, specifically relating to a table 180-degree rotation locking mechanism. Background Technology

[0002] With the continuous development of technology, desks have evolved from traditional fixed styles to diverse designs, and the desktops have become more multifunctional, with the flip-top function now being common in student desks.

[0003] The existing method involves flipping the tabletop at a certain angle and then tightening the bolts to fix the tabletop to the table legs, thus locking the tabletop in place. However, this requires multiple turns of the bolts during the locking and unlocking process, which is very inconvenient for users. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed 180-degree rotating locking mechanism for a table in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A table 180-degree rotation locking mechanism includes a tray for connecting to the tabletop and table legs for supporting the tray. The table legs and the tray are connected by a locking structure. The locking structure includes a housing, an internal gear ring fixedly connected to the inner wall of the housing, a gear with an outer diameter smaller than the inner diameter of the internal gear ring disposed in the inner cavity of the internal gear ring, a rotating shaft fixedly passing through the center of the gear, a non-circular hole opened along the axis of the rotating shaft, an unlocking device movably inserted into the non-circular hole, one end of the rotating shaft away from the gear being rotatably connected to the table leg through a first connector, and the outer wall of the housing being fixed to the top side wall of the tray through a second connector.

[0007] As a further optimization of this utility model, the tray is horizontally arranged, and both ends of the tray are provided with mounting slots for fixing the desktop.

[0008] As a further optimization of this utility model, the unlocking device includes an adjusting rod that is movably inserted into the non-circular hole. The cross-sectional size of the adjusting rod is adapted to the cross-sectional size of the non-circular hole. A handle is fixedly connected to one end of the adjusting rod outside the non-circular hole, and an anti-slip block is provided around the handle.

[0009] As a further optimization of this utility model, the first connecting member includes a turntable fixedly sleeved on the middle section of the rotating shaft, and a plurality of annularly distributed connecting rods are integrally formed on the side of the turntable away from the housing.

[0010] As a further optimization of this utility model, the bottom of the tray extends downward to form a connecting part, and the connecting part is provided with a plurality of limiting holes that are aligned with the connecting rod. The connecting rod passes through the limiting holes, passes through the connecting part, and is fixed to the connecting part.

[0011] As a further optimization of this utility model, a through hole is also provided at the center of the connecting part, which is aligned with the rotating shaft. The end of the rotating shaft away from the gear passes through the through hole and is rotatably connected to the connecting part.

[0012] As a further optimization of this utility model, the second connecting member includes a mounting plate fixedly connected to the outer wall of the housing. The mounting plate has a fixing hole, and the mounting plate is fixed to the top of the table leg by external bolts cooperating with the fixing hole.

[0013] The beneficial effects of this utility model are as follows: When flipping the tabletop, the adjusting rod can be inserted into the non-circular hole. Since the non-circular hole is eccentrically opened on the rotating shaft, when the adjusting rod is rotated to drive the rotating shaft to rotate, the gear can rotate until it disengages from the internal gear ring under the support of the rotating shaft. At this time, the gear and the internal gear ring are unlocked, and the user can flip the tray at any angle to adjust the angle of the tabletop. After the adjustment is completed, the user releases the adjusting rod, and the gear resets and locks with the internal gear ring under its own gravity, automatically locking the tabletop for user convenience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection structure between the locking structure of this utility model and the table legs and tray;

[0015] Figure 2 This is a schematic diagram showing the opening positions of the limiting hole and the through hole in this utility model;

[0016] Figure 3 This is a schematic diagram of the locking structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the gear and the internal gear ring of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure of the unlocking device of this utility model.

[0019] In the diagram: 1. Table leg; 2. Support plate; 3. Connecting part; 4. Mounting slot; 5. Housing; 6. Mounting plate; 7. Fixing hole; 8. Internal gear ring; 9. Gear; 10. Rotating shaft; 11. Non-circular hole; 12. Turntable; 13. Connecting rod; 14. Limiting hole; 15. Through hole; 16. Adjusting rod; 17. Tightening handle; 18. Anti-slip block. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example

[0022] like Figure 1 - Figure 5 As shown, a table 180-degree rotation locking mechanism includes a tray 2 for connecting the tabletop and table legs 1 for supporting the tray 2. The table legs 1 and the tray 2 are connected by a locking structure. The tray 2 is horizontally arranged, and both ends of the tray 2 are provided with mounting slots 4 for fixing the tabletop, so that the tabletop can be fixed to the tray 2 through the mounting slots 4. When the tray 2 and the table legs 1 rotate relative to each other, the tabletop can be flipped.

[0023] The locking structure includes a housing 5, an internal gear ring 8 is fixedly connected to the inner wall of the housing 5, and a gear 9 with an outer diameter smaller than the inner diameter of the internal gear ring 8 is provided in the inner cavity of the internal gear ring 8. When the gear 9 is not subjected to external force, the gear 9 slides freely down along the height direction of the internal gear ring 8 under its own weight, so that the bottom teeth of the gear 9 and the internal gear ring 8 are locked together, so that the gear 9 and the internal gear ring 8 are relatively fixed.

[0024] A rotating shaft 10 is fixedly inserted through the center of gear 9. A non-circular hole 11 is opened along the axis of the rotating shaft 10. The non-circular hole 11 is eccentrically opened on the rotating shaft 10. An unlocking device is movably inserted into the non-circular hole 11. The unlocking device includes an adjusting rod 16 movably inserted into the non-circular hole 11. The cross-sectional size of the adjusting rod 16 is adapted to the cross-sectional size of the non-circular hole 11. A handle 17 is fixedly connected to one end of the adjusting rod 16 outside the non-circular hole 11. Anti-slip blocks 18 are provided around the handle 17. Since the cross-sectional size of the adjusting rod 16 is adapted to the cross-sectional size of the non-circular hole 11, and the non-circular hole 11 is eccentrically set with the rotating shaft 10, when the adjusting rod 16 is connected to the rotating shaft 10 through the non-circular hole 11, the rotating shaft 10 can be rotated by rotating the adjusting rod 16 through the handle 17. When gear 9 rotates eccentrically with the rotating shaft 10 until it disengages from the internal gear ring 8, gear 9 can be unlocked from the internal gear ring 8, so that gear 9 can rotate relative to the internal gear ring 8.

[0025] The end of the rotating shaft 10 away from the gear 9 is rotatably connected to the table leg 1 through the first connector. The first connector includes a turntable 12 fixedly sleeved on the middle section of the rotating shaft 10. The turntable 12 is integrally formed with multiple ring-shaped connecting rods 13 on the side away from the housing 5. The bottom of the tray 2 extends downward to form a connecting part 3. Multiple limiting holes 14 are provided on the connecting part 3 to be aligned with the connecting rods 13. The connecting rods 13 pass through the limiting holes 14 and are fixed to the connecting part 3, so that the gear 9 is fixedly connected to the tray 2 used to connect the tabletop through the rotating shaft 10 and the turntable 12. When the user rotates the gear 9 and the internal gear ring 8 through the adjusting rod 16 to unlock them, the tray 2 can be rotated to drive the tabletop installed on the tray 2 to flip at any angle.

[0026] The center of the connecting part 3 is also provided with a through hole 15 that is aligned with the rotating shaft 10. The end of the rotating shaft 10 away from the gear 9 passes through the through hole 15 and is rotatably connected to the connecting part 3, so that the user can insert the adjusting rod 16 into the non-circular hole 11 opened on the rotating shaft 10.

[0027] The second connecting component includes a mounting plate 6 fixedly connected to the outer wall of the housing 5. The mounting plate 6 has a fixing hole 7. The mounting plate 6 is fixed to the top of the table leg 1 by external bolts in conjunction with the fixing hole 7. The internal gear ring 8 is fixed to the table leg 1 by the housing 5 in conjunction with the mounting plate 6.

[0028] It should be noted that in this 180-degree rotating locking mechanism for a table, the internal gear ring 8 is fixed to the table leg 1 via the housing 5 and mounting plate 6. The gear 9 is fixed to the support plate 2 via the turntable 12 mounted on the rotating shaft 10 and connecting rod 13. When the gear 9 is not subjected to external force, its bottom engages and locks with the internal gear ring 8 under the action of gravity, thus fixing the tabletop fixed on the support plate 2 relative to the table leg 1. When it is necessary to flip the tabletop, the adjusting rod 16 can be inserted into the non-circular hole 11. Since the non-circular hole 11 is eccentrically opened on the rotating shaft 10, when the adjusting rod 16 is rotated, the rotating shaft 10 is rotated by the support of the rotating shaft 10 and can rotate until it disengages from the internal gear ring 8. At this time, the gear 9 and the internal gear ring 8 are unlocked, and the user can flip the support plate 2 at any angle to adjust the angle of the tabletop. After adjustment, the user releases the adjusting rod 16, and the gear 9 resets and locks with the internal gear ring 8 under its own gravity, thus locking the tabletop for user convenience.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A table 180-degree rotation locking mechanism, comprising a tray (2) for connecting to the tabletop and table legs (1) for supporting the tray (2), wherein the table legs (1) and the tray (2) are connected by a locking structure, characterized in that: The locking structure includes a housing (5), an internal gear ring (8) is fixedly connected to the inner wall of the housing (5), a gear (9) with an outer diameter smaller than the inner diameter of the internal gear ring (8) is provided in the inner cavity of the internal gear ring (8), a rotating shaft (10) is fixedly passed through the center of the gear (9), a non-circular hole (11) is opened along its axial direction of the rotating shaft (10), an unlocking device is movably inserted into the non-circular hole (11), one end of the rotating shaft (10) away from the gear (9) is rotatably connected to the table leg (1) through a first connector, and the outer wall of the housing (5) is fixed to the top side wall of the tray (2) through a second connector.

2. The table 180-degree rotation locking mechanism according to claim 1, characterized in that: The tray (2) is horizontally arranged, and both ends of the tray (2) are provided with mounting slots (4) for fixing the tabletop.

3. The table 180-degree rotation locking mechanism according to claim 1, characterized in that: The unlocking device includes an adjusting rod (16) that is movably inserted into the non-circular hole (11). The cross-sectional size of the adjusting rod (16) is adapted to the cross-sectional size of the non-circular hole (11). A handle (17) is fixedly connected to one end of the adjusting rod (16) located outside the non-circular hole (11). Anti-slip blocks (18) are provided around the handle (17).

4. The table 180-degree rotation locking mechanism according to claim 1, characterized in that: The first connecting member includes a turntable (12) fixedly sleeved on the middle section of the rotating shaft (10), and a plurality of annularly distributed connecting rods (13) are integrally formed on the side of the turntable (12) away from the housing (5).

5. A table 180-degree rotation locking mechanism according to claim 4, characterized in that: The bottom of the tray (2) extends to form a connecting part (3). The connecting part (3) has a plurality of limiting holes (14) that are aligned with the connecting rod (13). The connecting rod (13) passes through the limiting holes (14) through the connecting part (3) and is fixed to the connecting part (3).

6. A table 180-degree rotation locking mechanism according to claim 5, characterized in that: The connecting part (3) is also provided with a through hole (15) at the center position, which is aligned with the rotating shaft (10). The end of the rotating shaft (10) away from the gear (9) passes through the through hole (15) and is rotatably connected to the connecting part (3).

7. A table 180-degree rotation locking mechanism according to claim 1, characterized in that: The second connector includes a mounting plate (6) fixedly connected to the outer wall of the housing (5). The mounting plate (6) has a fixing hole (7). The mounting plate (6) is fixed to the top of the table leg (1) by external bolts in conjunction with the fixing hole (7).

Images