A folding structure and furniture thereof

Abstract

The present invention discloses a folding structure and furniture thereof, including a middle plate and a side plate, the bottom of the middle plate is fixedly provided with an adjustment rod, the adjustment rod is clamped on a limit nut; folding grooves are symmetrically provided on both sides of the middle plate, a hinge groove is provided between the central axis and the connecting rod, a circular ring bearing is provided in the hinge groove, a pressure rod is fixedly provided on the disc, and a lubricating oil pipe is provided in the inner cavity of the connecting rod; a side plate is fixedly provided on the side of the connecting rod away from the folding groove, an upper leg is hingedly provided on the bottom of the side plate, a rotating block is fixedly provided on the end of the upper leg away from the side plate, and a ratchet is fixedly provided on the rotating block. The present invention provides a folding structure, the folding operation is simple, and lubricating oil is automatically added to the hinge when folding and retracting to avoid rust, corrosion, etc. on the hinge to cause folding obstruction. The present invention also discloses furniture including the above-mentioned folding structure, which is easy to use and very worthy of promotion.

Description

Technical Field

[0001] The invention relates to the technical field of furniture, in particular to a folding structure and furniture thereof. Background Art

[0002] In the prior art, there is a foldable furniture with application number "201810701532.6", which includes a nine-grid desktop, which includes a first grid desktop, a second grid desktop, a third grid desktop, a fourth grid desktop, a fifth grid desktop, a sixth grid desktop, a seventh grid desktop, an eighth grid desktop and a ninth grid desktop. The ninth grid desktop is respectively connected to the second grid desktop, the fourth grid desktop, the sixth grid desktop and the eighth grid desktop in pairs at the center of the bottom with four first positioning pins, and the ninth grid desktop is respectively connected to the second grid desktop, the fourth grid desktop, the sixth grid desktop and the eighth grid desktop in pairs at the bottom with four first combination page components. The foldable furniture achieves the minimum folding of the desktop while saving the largest space range through the flexible use of internal hinges and positioning pins.

[0003] However, there are still some obvious defects in its use: 1. There are many hinges in the above-mentioned device, the installation structure is relatively complicated, and there are many parts, which will increase the production and sales costs; 2. When the above-mentioned device is used as a table, the height of the table cannot be adjusted and the place of use is limited; 3. The hinged part is the core of the folding structure. In daily use, the hinged part is often not flexible enough due to rust and corrosion caused by long-term storage, which affects the folding and opening of the device. The above-mentioned device lacks the necessary maintenance structure and the service life of the device is limited. Summary of the invention

[0004] The object of the present invention is to provide a folding structure and furniture thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A folding structure, comprising a middle plate and side plates, an adjusting rod is fixedly arranged at the bottom of the middle plate, a guide rail is fixedly arranged in the inner cavity of the adjusting rod, a sliding rod is movably arranged on the guiding rail, an adjusting threaded rod is fixedly arranged at one end of the sliding rod away from the middle plate, a limiting nut is threadedly arranged on the adjusting threaded rod, the adjusting rod is clamped on the limiting nut, and a counterweight base is fixedly arranged at one end of the adjusting threaded rod away from the sliding rod;

[0007] The middle plate is symmetrically provided with folding grooves on both sides, and a central axis is fixedly arranged in the folding groove, a connecting rod is movably arranged on the central axis, a hinge groove is arranged between the central axis and the connecting rod, a ring bearing is arranged in the hinge groove, a disc is fixedly arranged in the connecting rod, the disc is hingedly arranged on the central axis, a pressure rod is fixedly arranged on the disc, a lubricating oil pipe is arranged in the inner cavity of the connecting rod, a piston plate is movably arranged in the lubricating oil pipe, a push rod is fixedly arranged on the piston plate, a push plate is fixedly arranged on the push rod, a wing plate is fixedly arranged on the side of the lubricating oil pipe, a restoring spring is connected between the wing plate and the push plate, an oil outlet pipe and an air inlet pipe are connected on the lubricating oil pipe, a one-way valve 1 is arranged in the oil outlet pipe, the oil outlet pipe is connected to the hinge groove, the air inlet pipe passes through the surface of the connecting rod and a waterproof and breathable membrane is arranged at the interface, and a one-way valve 2 is arranged on the air inlet pipe;

[0008] A side plate is fixedly provided on the side of the connecting rod away from the folding groove, and an upper leg is hingedly provided on the bottom of the side plate, and a rotating block is fixedly provided on the end of the upper leg away from the side plate, and the rotating block is movably provided on a round rod fixedly provided in the groove of the lower leg, and a ratchet is fixedly provided on the rotating block, and the ratchet is movably penetrated through the round rod, and a threaded groove is opened on the lower leg, and a locking threaded rod is threadedly penetrated in the threaded groove, and a mounting block is fixedly provided on one end of the locking threaded rod close to the round rod, a fixing shaft is fixed on the mounting block, and a pawl is movably provided on the fixing shaft, and a locking nut is threadedly provided on the end of the locking threaded rod away from the pawl, and the locking nut is tightly arranged against the outer wall of the lower leg.

[0009] Preferably, the diameter of the adjusting rod is smaller than the diameter of the limiting nut.

[0010] Preferably, a blocking block is fixedly arranged in the inner cavity of the lubricating oil pipe close to the push plate.

[0011] Preferably, the connecting rod and the side plate are integrally formed.

[0012] Preferably, the upper leg and the rotating block are integrally formed.

[0013] A piece of furniture comprises the folding structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The device has a simple structure, and the operation of opening it as a table or folding it up when not in use is simple and quick, easy to use, and does not take up space;

[0016] 2. When the device is used as a table, the height of the table can be adjusted steplessly without gradient, which has a wider application range and more applicable places;

[0017] 3. When the device adjusts the height of the table, the connector between the upper leg and the lower leg will automatically remain locked. After the height adjustment is completed, it can be used without manual fixing again;

[0018] 4. This device can be folded up when not in use as a table. When the side panels are folded down, the pressure rod will squeeze the push plate, so that the lubricating oil in the lubricating oil pipe is squeezed into the hinge groove, and the hinge groove and the ring bearing are lubricated, so that the device will not rust or corrode during the subsequent storage period. When it is opened for use next time, the hinge will still be smooth and fluent, extending the service life of the device.

[0019] The present invention provides a folding structure with simple folding operation. Lubricating oil is automatically added to the hinges when folding and stowing to avoid rust and corrosion on the hinges, which may cause folding difficulties. The present invention also discloses furniture including the folding structure, which is easy to use and is very worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front cross-sectional schematic diagram of the overall structure of the present invention in an open state;

[0021] Figure 2 It is a schematic cross-sectional top view of the overall structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A in the enlarged view;

[0023] Figure 4 This is a schematic diagram of the lubricating oil addition structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the connection structure of the upper supporting leg and the lower supporting leg of the present invention;

[0025] Figure 6 For the present invention Figure 5 The enlarged view of point B in the figure;

[0026] Figure 7 It is a schematic diagram of the overall structure of the present invention in a folded state.

[0027] In the figure: 1 middle plate, 2 adjusting rod, 3 guide rail, 4 sliding rod, 5 adjusting threaded rod, 6 limiting nut, 7 counterweight base, 8 folding groove, 9 center axis, 10 connecting rod, 11 hinge groove, 12 annular bearing, 13 disc, 14 pressure rod, 15 lubricating oil pipe, 16 piston plate, 17 push rod, 18 push plate, 19 wing plate, 20 restoring spring, 21 blocking block, 22 oil outlet pipe, 23 air inlet pipe, 24 one-way valve 1, 25 waterproof breathable membrane, 26 one-way valve 2, 27 side plate, 28 upper leg, 29 rotating block, 30 lower leg, 31 round rod, 32 ratchet, 33 threaded groove, 34 locking threaded rod, 35 mounting block, 36 fixed shaft, 37 pawl, 38 locking nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , the present invention provides a technical solution:

[0030] A folding structure includes an intermediate plate 1 and a side plate 27. An adjusting rod 2 is fixedly arranged at the bottom of the intermediate plate 1. A guide rail 3 is fixedly arranged in the inner cavity of the adjusting rod 2. A sliding rod 4 is movably arranged on the guide rail 3. The sliding rod 4 can slide along the guide rail 3. An adjusting threaded rod 5 is fixedly arranged at one end of the sliding rod 4 away from the intermediate plate 1. A limiting nut 6 is threadedly arranged on the adjusting threaded rod 5. The adjusting rod 2 is clamped on the limiting nut 6. The limiting nut 6 plays a role of adjusting the limit. A counterweight base 7 is fixedly arranged at one end of the adjusting threaded rod 5 away from the sliding rod 4, so that the device as a whole is more stable whether in use or in a folded and stowed state.

[0031] Folding grooves 8 are symmetrically provided on both sides of the middle plate 1. A central axis 9 is fixedly provided in the folding groove 8. A connecting rod 10 is movably provided on the central axis 9. The connecting rod 10 can rotate around the central axis 9. A hinge groove 11 is provided between the central axis 9 and the connecting rod 10. A circular ring bearing 12 is provided in the hinge groove 11. The connecting rod 10 can rotate in the circular ring bearing 12. A disk 13 is fixedly provided in the connecting rod 10. The disk 13 rotates with the rotation of the connecting rod 10. The disk 13 is hinged. The connecting rod 10 is provided on the central axis 9, a pressure rod 14 is fixedly provided on the disc 13, a lubricating oil pipe 15 is provided in the inner cavity of the connecting rod 10, a piston plate 16 is movably provided in the lubricating oil pipe 15, lubricating substances such as lubricating oil or lubricating liquid are stored between the piston plate 16 and the bottom wall of the lubricating oil pipe 15, a push rod 17 is fixedly provided on the piston plate 16, a push plate 18 is fixedly provided on the push rod 17, a wing plate 19 is fixedly provided on the side of the lubricating oil pipe 15, and a connection is formed between the wing plate 19 and the push plate 18. A return spring 20 is provided, and an oil outlet pipe 22 and an air inlet pipe 23 are connected to the lubricating oil pipe 15. A one-way valve 24 is provided in the oil outlet pipe 22. The one-way valve 24 is provided so that the lubricating oil in the lubricating oil pipe 15 can enter the hinge groove 11 through the oil outlet pipe 22 to lubricate and maintain the hinge groove 11 and the annular bearing 12, while the lubricating oil cannot flow back into the lubricating oil pipe 15. The oil outlet pipe 22 is connected to the hinge groove 11, and the air inlet pipe 23 passes through the surface of the connecting rod 10 and A waterproof and breathable membrane 25 is provided at the interface. The waterproof and breathable membrane 25 can allow gas exchange, but liquids such as water and lubricating oil cannot pass through. A one-way valve 26 is provided in the air inlet pipe 23. The setting of the one-way valve 26 allows external air to enter the lubricating oil pipe 15 through the air inlet pipe 23, but the lubricating oil in the lubricating oil pipe 15 will not flow back into the air inlet pipe 23. Both the one-way valve 1 24 and the one-way valve 2 26 can adopt the 6MM model provided by the source manufacturer of Hangzhou Jiechao Machinery.

[0032] A side plate 27 is fixedly provided on the side of the connecting rod 10 away from the folding groove 8, and an upper leg 28 is hingedly provided at the bottom of the side plate 27. A rotating block 29 is fixedly provided on the end of the upper leg 28 away from the side plate 27. The rotating block 29 is movably provided on a round rod 31 fixedly provided in the groove of the lower leg 30. A ratchet 32 ​​is fixedly provided on the rotating block 29. The ratchet 32 ​​rotates with the rotation of the rotating block 29. The ratchet 32 ​​is movably provided on the round rod 31. A threaded groove 33 is provided on the lower leg 30. The thread in the threaded groove 33 penetrates A locking threaded rod 34 is provided, and a mounting block 35 is fixedly provided at one end of the locking threaded rod 34 close to the round rod 31, a fixing shaft 36 is fixedly provided on the mounting block 35, and a pawl 37 is movably provided on the fixing shaft 36. During use, the pawl 37 and the ratchet 32 ​​are meshed, and the pawl 37 can rotate slightly around the fixing shaft 36. A locking nut 38 is threadedly provided at one end of the locking threaded rod 34 away from the pawl 37. The locking nut 38 is arranged close to the outer wall of the lower leg 30, and the locking nut 38 limits the position of the locking threaded rod 34.

[0033] As a preferred embodiment, the diameter of the adjusting rod 2 is smaller than the diameter of the limiting nut 6, and the adjusting rod 2 is embedded above the limiting nut 6 to limit the height.

[0034] As a preference, a blocking block 21 is fixedly provided in the inner cavity of the lubricating oil pipe 15 on one side close to the push plate 18 , and the function of the blocking block 21 is to prevent the piston plate 16 from detaching from the lubricating oil pipe 15 during movement.

[0035] As a preferred embodiment, the connecting rod 10 and the side plate 27 are integrally formed. Such a configuration can not only simplify the production and assembly process, but also improve the overall stability of the device.

[0036] As a preferred embodiment, the upper leg 28 and the rotating block 29 are integrally formed. Such a configuration can not only simplify the production and assembly process, but also improve the overall stability of the device.

[0037] A piece of furniture comprises a folding structure, which can be folded and stored when not in use.

[0038] Working principle: when it is needed, the device can be opened from the folded state to the use state. Specifically, the counterweight base 7 can be stepped on and the middle plate 1 can be lifted upward. When it is lifted to a suitable height, the limit nut 6 is rotated upward, and the limit nut 6 moves along the adjusting threaded rod 5. Since the limit nut 6 has a large diameter, the adjusting rod 2 will be stuck on the upper part of the limit nut 6, thereby adjusting the overall height of the adjusting rod 2 and the adjusting threaded rod 5, and then the use height of the table is adjusted. Then, the lower leg 30 is moved towards the direction close to the ground, and the lower leg 30 is concave. The round rod 31 fixed in the groove will rotate in the rotating block 29 of the upper leg 28 until the lower leg 30 touches the ground to complete the support on both sides. At this time, the ratchet 32 ​​is fixed on the rotating block 29 and rotates accordingly. Under the action of the pawl 37, the ratchet 32 ​​can only rotate in one direction, so that the lower leg 30 can only move in one direction. When the lower leg 30 is adjusted to a stable supporting position, the connection structure between the upper leg 28 and the lower leg 30 has been automatically locked and will not automatically fold in the opposite direction. Therefore, the table can be used without additional fixing operations.

[0039] After use, if the device needs to be folded and stored, the limit nut 6 can be moved towards the direction close to the counterweight base 7, and the adjusting rod 2 will drop accordingly, so that the overall length of the adjusting rod 2 and the adjusting threaded rod 5 is shortened, and then the side plate 27 is folded downward, and the side plate 27 drives the connecting rod 10 to rotate, and the connecting rod 10 drives the internally fixed disk 13 and the pressure rod 14 to rotate. When the side plate 27 is folded from a horizontal state to a vertical state, the pressure rod 14 just presses the push plate 18 downward, and the push plate 18 pushes the piston plate 16 through the push rod 17, so that the lubricating oil, lubricating liquid and other lubricating substances in the lubricating oil pipe 15 are squeezed out from the oil outlet pipe 22 into the hinge groove 11, and the hinge groove 11 and The annular bearings 12 are all lubricated. Under the action of the one-way valve 1 24 and the one-way valve 26, a certain amount of lubricating oil will be squeezed out each time the push plate 18 is pressed down, and this operation will only be started when the device is folded and put away, to prevent the device from rusting and corroding due to high air humidity during the subsequent placement process, so that the device is still smooth and easy to fold and open when used next time, and the use is smoother and the service life is extended. In addition, if it is necessary to fold the upper leg 28 and the lower leg 30, just unscrew the locking nut 38, pull the locking threaded rod 34 and the fixed shaft 36 outward, and the pawl 37 is away from the ratchet 32 ​​at this time, releasing the locking state, and then it can be folded and retracted by hand.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding structure comprising a middle plate (1) and a side plate (27), Features: An adjusting rod (2) is fixedly arranged at the bottom of the middle plate (1), a guide rail (3) is fixedly arranged in the inner cavity of the adjusting rod (2), a sliding rod (4) is movably arranged on the guiding rail (3), an adjusting threaded rod (5) is fixedly arranged at one end of the sliding rod (4) away from the middle plate (1), a limiting nut (6) is threadedly arranged on the adjusting threaded rod (5), the adjusting rod (2) is clamped on the limiting nut (6), and a counterweight base (7) is fixedly arranged at one end of the adjusting threaded rod (5) away from the sliding rod (4); Folding grooves (8) are symmetrically provided on both sides of the middle plate (1), a central axis (9) is fixedly provided in the folding groove (8), a connecting rod (10) is movably provided on the central axis (9), a hinge groove (11) is provided between the central axis (9) and the connecting rod (10), a circular ring bearing (12) is provided in the hinge groove (11), a disk (13) is fixedly provided in the connecting rod (10), the disk (13) is hingedly provided on the central axis (9), a pressure rod (14) is fixedly provided on the disk (13), a lubricating oil pipe (15) is provided in the inner cavity of the connecting rod (10), a piston plate (16) is movably provided in the lubricating oil pipe (15), and the movable piston plate (16) is provided in the connecting rod (10). A push rod (17) is fixedly arranged on the plug plate (16), a push plate (18) is fixedly arranged on the push rod (17), a wing plate (19) is fixedly arranged on the side of the lubricating oil pipe (15), a return spring (20) is connected between the wing plate (19) and the push plate (18), an oil outlet pipe (22) and an air inlet pipe (23) are connected on the lubricating oil pipe (15), a one-way valve (24) is arranged in the oil outlet pipe (22), the oil outlet pipe (22) is connected to the hinge groove (11), the air inlet pipe (23) passes through the surface of the connecting rod (10) and a waterproof and breathable membrane (25) is arranged at the interface, and a one-way valve (26) is arranged in the air inlet pipe (23); A side plate (27) is fixedly provided on the side of the connecting rod (10) away from the folding groove (8); an upper leg (28) is hingedly provided at the bottom of the side plate (27); a rotating block (29) is fixedly provided on one end of the upper leg (28) away from the side plate (27); the rotating block (29) is movably provided on a round rod (31) fixedly provided in the groove of the lower leg (30); a ratchet (32) is fixedly provided on the rotating block (29); the ratchet (32) is movably provided on the round rod (31); the lower leg (30) A thread groove (33) is formed on the upper surface of the locking rod (34), the thread groove (33) is threadedly provided with a locking thread rod (34), one end of the locking thread rod (34) close to the round rod (31) is fixedly provided with a mounting block (35), a fixed shaft (36) is fixedly provided on the mounting block (35), a ratchet (37) is movably provided on the fixed shaft (36), a locking nut (38) is threadedly provided on one end of the locking thread rod (34) away from the ratchet (37), and the locking nut (38) is arranged closely against the outer wall of the lower leg (30); The connecting rod (10) and the side plate (27) are integrally formed; The upper supporting leg (28) and the rotating block (29) are integrally formed.

2. A folding structure according to claim 1, Features: The diameter of the adjusting rod (2) is smaller than the diameter of the limiting nut (6).

3. A folding structure according to claim 1, Features: A blocking block (21) is fixedly arranged in the inner cavity of the lubricating oil pipe (15) on the side close to the push plate (18).

4. A piece of furniture, Features: The invention comprises the folding structure as described in any one of claims 1 to 3.

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