Gas spring convenient to rotate for swivel chair

Abstract

The utility model relates to the technical field of gas springs, and discloses a gas spring convenient to rotate for a swivel chair, which comprises a stand column, a base is arranged at the bottom of the stand column, a fixing ring is fixedly connected to the upper side of the base, the inner wall of the fixing ring is fixedly connected to the bottom of the stand column, and a lifting column is movably connected to the inside of the upper end of the stand column. A piston is fixedly connected to the bottom of the lifting column, a plurality of limiting rods are arranged on the outer side of the piston in a penetrating mode, the upper ends and the lower ends of the limiting rods are fixedly connected to the upper side and the lower side of the inner wall of the stand column correspondingly, and a plugging block is arranged at the bottom of the stand column. The motor drives the lead screw to rotate, the lead screw is matched with the inner threaded rod to drive the plugging block to ascend and descend, so that air is controlled to enter and exit from the stand column, the air leakage condition during traveling is avoided, lubricating oil is injected into the storage bin through the oil injection hole and falls into the bearing through the oil leakage hole, the rotation resistance of the seat is reduced, operation is convenient, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of gas springs, in particular to a gas spring for a swivel chair which is convenient for rotation. Background Art

[0002] Gas spring is an industrial accessory that can perform functions such as support, cushioning, braking, height adjustment and angle adjustment. The principle is to fill an inert gas or an oil-gas mixture into a closed pressure cylinder to make the pressure in the cavity several times or dozens of times higher than the atmospheric pressure, and use the pressure difference generated by the cross-sectional area of ​​the piston rod being smaller than the cross-sectional area of ​​the piston to achieve the movement of the piston rod.

[0003] The existing seat gas spring is connected to the seat and can rotate. However, long-term rotation and dust accumulation will increase the resistance during rotation, affecting the rotation of the seat. In addition, the gas spring will gradually age with time. Traditional gas springs are prone to control failure. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a gas spring for a swivel chair which is easy to rotate, which can reduce the resistance of the seat rotation and improve the stability of the gas spring performance.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas spring for a swivel chair that is easy to rotate, comprises a column, a base is provided at the bottom of the column, a fixing ring is fixedly connected to the upper side of the base, the inner wall of the fixing ring is fixedly connected to the bottom of the column, a lifting column is movably connected inside the upper end of the column, a piston is fixedly connected to the bottom of the lifting column, a plurality of limit rods are penetrated through the outer side of the piston, the upper and lower ends of the limit rods are respectively fixedly connected to the upper and lower sides of the inner wall of the column, a blocking block is provided at the bottom of the column, an opening is opened on the left side of the blocking block, a limit block is fixedly connected to the left bottom of the inner wall of the column, the right end of the limit block is movably connected to the inside of the opening, an air inlet is provided at the left bottom of the column, a motor is fixedly connected to the bottom of the column, a screw is fixedly connected to the driving shaft of the motor, an internal threaded rod is externally threaded on the upper end of the screw, the top of the internal threaded rod is fixedly connected to the bottom of the blocking block, a plurality of blocks are fixedly connected to the outer wall of the upper end of the column, and a connecting component is provided at the top of the lifting column.

[0007] Furthermore, the connecting assembly includes a fixed plate at the top of the lifting column, a connecting ring is fixedly connected to the bottom of the fixed plate, a plurality of bayonet holes are provided at the lower end of the connecting ring, bolts are threadedly connected to the left and right sides of the connecting ring, a sealing ring is fixedly connected to the upper outer wall of the fixed plate, a bearing is fixedly connected to the middle part of the upper side of the fixed plate, and a rotating assembly is arranged on the upper side of the fixed plate.

[0008] Furthermore, the rotating assembly includes a rotating disk arranged on the upper side of the fixed disk, a connecting column is fixedly connected to the middle part of the lower side of the rotating disk, a sealing groove is opened on the outer side of the lower side of the rotating disk, a plurality of fixing ears are fixedly connected to the outer side of the rotating disk, a storage bin is opened in the middle part of the upper side of the rotating disk, a plurality of oil leakage holes are opened at the bottom of the storage bin, a cover plate is fixedly connected to the top of the inner wall of the storage bin, and an oil filling hole is opened on the right side of the rotating disk.

[0009] Furthermore, the inner wall of the connecting ring is tightly matched with the top outer wall of the lifting column.

[0010] Furthermore, the inner wall of the bayonet is embedded in the outside of the clamping block.

[0011] Furthermore, the outer wall of the lower end of the connecting column is fixedly connected to the inner side of the bearing.

[0012] Furthermore, the outer wall of the sealing ring is movably connected to the inside of the sealing groove.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, a motor is provided to drive the screw rod to rotate, and the screw rod cooperates with the internal threaded rod to drive the blocking block to rise and fall, thereby controlling the gas in and out of the interior of the column. On the basis of the traditional gas spring, double insurance is performed to avoid the occurrence of air leakage during travel and improve the stability of the gas spring performance.

[0015] 2. In the utility model, lubricant is injected into the storage bin through the oil filling hole and falls into the bearing through the oil leakage hole, thereby reducing the resistance of the seat rotation, the operation is convenient, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall schematic diagram of a gas spring for a swivel chair that is easy to rotate, which is proposed by the utility model;

[0017] Figure 2 This is an exploded schematic diagram of a gas spring for a swivel chair that is easy to rotate, as proposed by the utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of a gas spring for a swivel chair that is easy to rotate, as proposed by the utility model;

[0019] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0020] Figure 5 This is a schematic diagram of a fixing plate of a gas spring for a swivel chair that is easy to rotate, as proposed by the utility model;

[0021] Figure 6 The utility model is a schematic diagram of a rotating disk of a gas spring for a swivel chair which is easy to rotate.

[0022] Legend:

[0023] 1. Column; 2. Base; 3. Fixed ring; 4. Lifting column; 5. Piston; 6. Limit rod; 7. Block; 8. Opening; 9. Air inlet; 10. Limit block; 11. Motor; 12. Screw rod; 13. Internal threaded rod; 14. Block; 15. Fixed plate; 16. Connecting ring; 17. Bayonet; 18. Bolt; 19. Sealing ring; 20. Bearing; 21. Rotating plate; 22. Connecting column; 23. Sealing groove; 24. Fixed ear; 25. Cover plate; 26. Oil filling hole; 27. Storage bin; 28. Oil leakage hole. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1-6The utility model provides an embodiment: a gas spring for a swivel chair that is easy to rotate, including a column 1, a base 2 is provided at the bottom of the column 1, a fixing ring 3 is fixedly connected to the upper side of the base 2, the inner wall of the fixing ring 3 is fixedly connected to the bottom of the column 1, a lifting column 4 is movably connected inside the upper end of the column 1, a piston 5 is fixedly connected to the bottom of the lifting column 4, a plurality of limit rods 6 are penetrated through the outer side of the piston 5, the upper and lower ends of the limit rods 6 are respectively fixedly connected to the upper and lower sides of the inner wall of the column 1, a blocking block 7 is provided at the bottom of the column 1, an opening 8 is opened on the left side of the blocking block 7, a limiting block 10 is fixedly connected to the bottom left side of the inner wall of the column 1, the right end of the limiting block 10 is movably connected to the inside of the opening 8, and an air inlet 9 is provided at the bottom left side of the column 1. The bottom of the column 1 is fixedly connected with a motor 11, and the driving shaft of the motor 11 is fixedly connected with a screw rod 12. The upper end of the screw rod 12 is externally threaded with an internally threaded rod 13, and the top of the internally threaded rod 13 is fixedly connected to the bottom of the blocking block 7. The upper end outer wall of the column 1 is fixedly connected with a plurality of blocks 14; starting the motor 11 can drive the screw rod 12 to rotate, and the screw rod 12 and the internally threaded rod 13 cooperate to drive the blocking block 7 to rise and fall. The blocking block 7 rises and separates from the bottom of the column 1. At this time, gas can be injected or discharged into the inner wall of the column 1 through the air inlet 9, thereby driving the piston 5 and the lifting column 4 to rise or fall, thereby adjusting the height of the seat. The blocking block 7 provided can avoid air leakage, thereby improving the performance stability of the gas spring.

[0026] A fixed plate 15 is provided on the upper side of the top of the lifting column 4, and a connecting ring 16 is fixedly connected to the bottom of the fixed plate 15. The inner wall of the connecting ring 16 is tightly matched with the outer wall of the top of the lifting column 4. A plurality of bayonet holes 17 are provided at the lower end of the connecting ring 16. The inner wall of the bayonet hole 17 is embedded in the outside of the block 14. Bolts 18 are threadedly connected on the left and right sides of the connecting ring 16. A sealing ring 19 is fixedly connected to the outer wall of the upper side of the fixed plate 15. A bearing 20 is fixedly connected to the middle part of the upper side of the fixed plate 15. A rotating plate 21 is provided on the upper side of the fixed plate 15. A connecting column 22 is fixedly connected to the middle part of the lower side of the rotating plate 21. The outer wall of the lower end of the connecting column 22 is fixedly connected to the inner side of the bearing 20. A sealing groove 23 is provided on the outer side of the lower side of the rotating plate 21. The outer wall of the sealing ring 19 is movably connected to the inside of the sealing groove 23. The rotating plate 21 A plurality of fixing ears 24 are fixedly connected to the outer side of the rotating disk 21, a storage bin 27 is provided in the middle of the upper side of the rotating disk 21, a plurality of oil leakage holes 28 are provided at the bottom of the storage bin 27, a cover plate 25 is fixedly connected to the top of the inner wall of the storage bin 27, and an oil filling hole 26 is provided on the right side of the rotating disk 21; the fixing disk 15 and the lifting column 4 can be connected by cooperating with the bayonet 17 through the provided block 14, and the connecting ring 16 and the top of the lifting column 4, and the connecting ring 16 and the lifting column 4 can be fixed by rotating the bolt 18, and the lubricating oil can be injected into the storage bin 27 at a later stage through the provided oil filling hole 26, and the lubricating oil can drip onto the bearing 20 through the oil leakage hole 28, thereby reducing the resistance to the rotation of the seat and facilitating the rotation of the seat, and the possibility of the lubricating oil leaking from the side can be reduced by cooperating with the sealing ring 19 and the sealing groove 23.

[0027] Working principle: The gas spring is connected to the seat through the set fixing ear 24, and the seat is rotated on the upper side of the fixed plate 15 through the set rotating plate 21 and the connecting column 22. The lubricating oil can be injected into the storage bin 27 at a later stage through the set oil filling hole 26. The lubricating oil drips onto the bearing 20 through the oil leakage hole 28 to reduce the resistance of the seat rotation. The possibility of lubricating oil leakage can be reduced by the set sealing ring 19. The starting motor 11 drives the screw rod 12 to rotate. The screw rod 12 cooperates with the internal threaded rod 13 to drive the blocking block 7 to rise, so that the blocking block 7 is separated from the column 1, so that gas can be injected or discharged into the column 1 through the air inlet 9, driving the piston 5 and the lifting column 4 to rise and fall, thereby adjusting the height of the seat.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas spring for a swivel chair that is easy to rotate, comprising a column (1), characterized in that: The bottom of the column (1) is provided with a base (2), the upper side of the base (2) is fixedly connected with a fixing ring (3), the inner wall of the fixing ring (3) is fixedly connected to the bottom of the column (1), the upper end of the column (1) is movably connected with a lifting column (4), the bottom of the lifting column (4) is fixedly connected with a piston (5), the outer side of the piston (5) is provided with a plurality of limit rods (6), the upper and lower ends of the limit rods (6) are respectively fixedly connected to the upper and lower sides of the inner wall of the column (1), the bottom of the column (1) is provided with a blocking block (7), the left side of the blocking block (7) is provided with an opening (8), and the column (1) A limit block (10) is fixedly connected to the bottom left side of the inner wall, the right end of the limit block (10) is movably connected to the inside of the opening (8), an air inlet (9) is provided at the bottom left side of the column (1), a motor (11) is fixedly connected to the bottom of the column (1), a screw rod (12) is fixedly connected to the drive shaft of the motor (11), the upper end of the screw rod (12) is externally threadedly connected to an internally threaded rod (13), the top of the internally threaded rod (13) is fixedly connected to the bottom of the blocking block (7), a plurality of clamping blocks (14) are fixedly connected to the outer wall of the upper end of the column (1), and a connecting component is provided at the top of the lifting column (4).

2. The gas spring for a swivel chair that is easy to rotate according to claim 1, characterized in that: The connection assembly comprises a fixed plate (15) at the top of the lifting column (4); a connecting ring (16) is fixedly connected to the bottom of the fixed plate (15); a plurality of bayonet holes (17) are provided at the lower end of the connecting ring (16); bolts (18) are threadedly connected to the left and right sides of the connecting ring (16); a sealing ring (19) is fixedly connected to the upper outer wall of the fixed plate (15); a bearing (20) is fixedly connected to the middle part of the upper side of the fixed plate (15); and a rotating assembly is arranged on the upper side of the fixed plate (15).

3. The gas spring for a swivel chair that is easy to rotate according to claim 2, characterized in that: The rotating assembly comprises a rotating disk (21) arranged on the upper side of a fixed disk (15); a connecting column (22) is fixedly connected to the middle part of the lower side of the rotating disk (21); a sealing groove (23) is provided on the outer side of the lower side of the rotating disk (21); a plurality of fixing ears (24) are fixedly connected to the outer side of the rotating disk (21); a storage bin (27) is provided on the middle part of the upper side of the rotating disk (21); a plurality of oil leakage holes (28) are provided on the bottom of the storage bin (27); a cover plate (25) is fixedly connected to the top of the inner wall of the storage bin (27); and an oil filling hole (26) is provided on the right side of the rotating disk (21).

4. The gas spring for a swivel chair that is easy to rotate according to claim 2, characterized in that: The inner wall of the connecting ring (16) is tightly fitted with the outer wall of the top of the lifting column (4).

5. The gas spring for a swivel chair that is easy to rotate according to claim 2, characterized in that: The inner wall of the bayonet (17) is embedded outside the clamping block (14).

6. The gas spring for a swivel chair that is easy to rotate according to claim 3, characterized in that: The outer wall of the lower end of the connecting column (22) is fixedly connected to the inner side of the bearing (20).

7. The gas spring for a swivel chair that is easy to rotate according to claim 2, characterized in that: The outer wall of the sealing ring (19) is movably connected to the inside of the sealing groove (23).

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