Parallel bar floor spring structure

Abstract

The utility model discloses a parallel-bar floor spring structure, which belongs to the technical field of floor spring equipment and comprises a shell, a shaft cover is mounted on one side of the top of the shell, and a first sealing ring is arranged between the shaft cover and the shell; a second sealing ring is arranged in the center of the bottom of the shaft cover, a first bearing is arranged at the bottom of the second sealing ring, and a second upper carriage is arranged at the bottom of the first bearing; and two cylinder covers are arranged on one side of the shell. By designing the adjusting nut, the spring seat and the adjusting bolt, when the door closing force needs to be adjusted, the adjusting nut is rotated through a wrench, so that the adjusting nut rotates to drive the adjusting bolt to rotate, the adjusting bolt rotates to drive the spring seat to rotate, the spring seat extrudes the two telescopic springs, and the spring seat is adjusted to a designated position; the telescopic spring can be compressed and stretched, so that the door closing force can be adjusted at will according to the actual situation, the functionality is high, and meanwhile the structure is simple and reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of floor spring equipment, specifically relating to a double-bar floor spring structure. Background Technology

[0002] A floor spring is a hydraulic door closing device. Its main structure consists of a housing, cam, spring, piston, and other connecting parts. It is filled with damping hydraulic oil, and the door opens or closes by the rotation of the cam. It is typically installed inside the base plate or on the door frame. A double-cylinder floor spring has two springs arranged side-by-side, which distributes the spring force evenly between them. To achieve the same closing torque, the spring diameter and wire diameter can be made smaller; that is, the body thickness of a double-cylinder floor spring is thinner than that of a regular single-spring floor spring. Therefore, double-cylinder floor springs are usually used in situations where the depth of the floor hole for installation is limited.

[0003] Most existing double-cylinder floor springs have a fixed force, meaning the internal energy storage device spring has a fixed load. One end of the spring is supported by the housing, and the other end abuts against a piston in the damping cylinder to drive the piston to reset. Structurally, it is impossible to adjust the spring torque and adjust the closing force according to the usage scenario. For example, in areas with unstable wind pressure, a lighter door opening force is required to ensure the passage of the elderly and children during normal use, while an increased door opening force is needed when the outside wind speed is high to protect indoor property and personal safety. Therefore, it is very necessary to adjust the closing force of the closing device. At the same time, the traditional floor spring adjustment parts are relatively complex in design, requiring many improvements based on the existing floor spring, resulting in a complex structure and low reliability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a double-bar floor spring structure.

[0005] The technical solution adopted to solve the above technical problems is: a double-bar floor spring structure, including a housing, a shaft cover installed on one side of the top of the housing, and a first sealing ring provided between the shaft cover and the housing;

[0006] The bottom center of the shaft cover is provided with a second sealing ring, the bottom of the second sealing ring is provided with a first bearing, and the bottom of the first bearing is provided with a second upper slide plate.

[0007] Two cylinder heads are provided on one side of the housing.

[0008] Furthermore, the second upper slide plate has a cam at its center, the cam passing through the second sealing ring and the first bearing, the bottom of the cam has a first upper slide plate, and the bottom outer wall of the cam has a second bearing.

[0009] With the above technical solution, when the door is rotated, it drives the cam to rotate, causing the cam to rotate within the second sealing ring and the first bearing, and the cam is supported by the second bearing.

[0010] Furthermore, two connecting rods are installed inside the housing, the second upper slide plate is fixed by multiple screws, and the second upper slide plate is fixed by multiple front axles, front pulleys, rear axles and rear pulleys, and the two connecting rods cooperate with cams.

[0011] With the above technical solution, when the door is rotated, it drives the cam to rotate, causing the cam to rotate within the second sealing ring and the first bearing. This causes the cam to rotate within the two connecting rod slots. Since the cam is in close contact with the two connecting rod slots, when the cam rotates within the slots, the friction causes the two connecting rods to move to the left, pushing the corresponding telescopic springs. At this time, the door is rotated. The cam is now stuck in the slots of the two connecting rods and presses the two connecting rods to their furthest point, preventing the door from rotating and thus opening the door. To close the door, the door needs to be rotated in the opposite direction, thereby causing the cam to reset.

[0012] Furthermore, two regulating valves are provided on one side of the housing, and the outer walls of the two regulating valves are provided with valve sleeves, third sealing rings and fourth sealing rings.

[0013] Through the above technical solution, the valve sleeve, the third sealing ring, and the fourth sealing ring are fixed inside the housing, thereby connecting the two regulating valves and providing the overall stability of the device.

[0014] Furthermore, the housing is provided with two telescopic springs, each of which is engaged with a corresponding connecting rod.

[0015] With the above technical solution, when the two linkages are pushed, they will squeeze the corresponding telescopic springs, causing the two telescopic springs to be compressed. When the door is rotated in the opposite direction, the cam will reset, and the two telescopic springs will push the corresponding linkages in the opposite direction through their elastic force, causing the cam to reset quickly and the door to close quickly.

[0016] Furthermore, both cylinder heads are provided with a fifth sealing ring, and one end of each of the two telescopic springs is fitted with a non-perforated piston and a perforated piston, respectively. Both the non-perforated piston and the perforated piston are fixed by piston pins. Both the non-perforated piston and the perforated piston are provided with a first gasket and a filter screen, and the perforated piston is provided with steel balls.

[0017] Through the above technical solution, the perforated piston and the piston with holes limit the corresponding telescopic spring, preventing it from shifting during the extension and retraction process, thus ensuring strong stability.

[0018] Furthermore, the housing is provided with a spring seat, an adjusting nut is installed on one side of the spring seat, a sixth sealing ring is provided on the other side of the spring seat, an adjusting bolt is provided inside the housing, and a second washer is provided at one end of the adjusting bolt.

[0019] With the above technical solution, when it is necessary to adjust the closing force, the adjusting nut is turned by wrench, which causes the adjusting bolt to rotate, which in turn causes the spring seat to rotate, causing the spring seat to compress the two telescopic springs and adjust the spring seat to the designated position. This achieves the compression and extension of the telescopic springs, thereby realizing the adjustment of the closing force. It can be adjusted at will according to the actual situation, with strong functionality and a simple and reliable structure.

[0020] Furthermore, the spring seat is threadedly connected to the adjusting bolt, and the spring seat cooperates with two telescopic springs.

[0021] The above technical solution allows for quick adjustment of the force required to open or close the door. It can be quickly adjusted in harsh environments such as strong winds, and it can also be quickly adjusted when used by the elderly or children, greatly improving the user experience and solving the problem that the existing spring fixing force is not easy to adjust.

[0022] The beneficial effects of this utility model are as follows: (1) This utility model is designed with an adjusting nut, a spring seat and an adjusting bolt. When it is necessary to adjust the closing force, the adjusting nut is rotated by a wrench, which causes the adjusting nut to rotate and the adjusting bolt to rotate, which in turn causes the adjusting bolt to rotate and the spring seat to rotate, which causes the spring seat to squeeze the two telescopic springs and adjust the spring seat to the specified position, thereby realizing the compression and extension of the telescopic springs, thus realizing the adjustment of the closing force. It can be adjusted at will according to the actual situation, with strong functionality and simple and reliable structure; (2) This utility model is designed with a cam, a connecting rod and a telescopic spring. When the door rotates, the cam rotates, which pushes the two connecting rods, which push the corresponding telescopic springs. At this time, the door is rotated, realizing the opening of the door; when it is necessary to close the door, when the door is rotated in the opposite direction, the cam is reset, and the two telescopic springs push the corresponding connecting rods in the opposite direction through the elastic force, so that the cam is quickly reset and the door is quickly closed. The structure is simple, and the opening and closing of the door can be realized. Attached Figure Description

[0023] Figure 1 This is an exploded view of the entire utility model;

[0024] Figure 2 This is an exploded view of the parts on the shell of this utility model;

[0025] Figure 3 This is an exploded view of the internal parts of the casing of this utility model;

[0026] Figure 4This is an exploded view of the spring seat part of this utility model.

[0027] Reference numerals: 1. Shaft cover; 2. First sealing ring; 3. Second sealing ring; 4. First bearing; 5. Front axle; 6. Front pulley; 7. Cam; 8. First upper slide plate; 9. Second bearing; 10. Housing; 11. Screw; 12. Second upper slide plate; 13. Rear axle; 14. Rear pulley; 15. Connecting rod; 16. Adjusting valve; 17. Valve sleeve; 18. Third sealing ring; 19. Fourth sealing ring; 20. Telescopic spring; 21. Piston pin; 22. Hollow piston; 23. Fifth sealing ring; 24. Perforated piston; 25. First gasket; 26. Filter screen; 27. Steel ball; 28. Adjusting nut; 29. ​​Spring seat; 30. Sixth sealing ring; 31. Second gasket; 32. Adjusting bolt; 33. Cylinder head. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figures 1-3 As shown, a double-bar floor spring structure of this embodiment includes a housing 10, a shaft cover 1 is installed on one side of the top of the housing 10, and a first sealing ring 2 is provided between the shaft cover 1 and the housing 10.

[0030] A second sealing ring 3 is provided at the bottom center of the shaft cover 1, a first bearing 4 is provided at the bottom of the second sealing ring 3, and a second upper slide plate 12 is provided at the bottom of the first bearing 4.

[0031] Two cylinder heads 33 are provided on one side of the housing 10.

[0032] The center of the second upper slide plate 12 is provided with a cam 7, which passes through the second sealing ring 3 and the first bearing 4. The bottom of the cam 7 is provided with a first upper slide plate 8, and the bottom outer wall of the cam 7 is provided with a second bearing 9. When the door is rotated, it drives the cam 7 to rotate, so that the cam 7 rotates within the second sealing ring 3 and the first bearing 4, and the cam 7 is supported by the second bearing 9.

[0033] Two connecting rods 15 are installed inside the housing 10. The second upper slide plate 12 is fixed by multiple screws 11 and by multiple front axles 5, front pulleys 6, rear axles 13 and rear pulleys 14. The two connecting rods 15 cooperate with the cam 7. When the door is rotated, the cam 7 is driven to rotate, causing the cam 7 to rotate within the second sealing ring 3 and the first bearing 4, so that the cam 7 rotates within the grooves of the two connecting rods 15. Since the cam 7 is in close contact with the grooves of the two connecting rods 15, when the cam 308 rotates within the groove, the friction causes the two connecting rods 15 to move to the left, causing the two connecting rods 15 to push the corresponding telescopic springs 20. At this time, the door is rotated. At this time, the cam 7 is stuck in the grooves of the two connecting rods 15 and squeezes the two connecting rods 15 to their farthest distance. At this time, the door is not rotated, realizing the opening of the door. When it needs to be closed, the door needs to be rotated in the opposite direction, thereby driving the cam 7 to reset.

[0034] Two regulating valves 16 are provided on one side inside the housing 10. The outer walls of the two regulating valves 16 are provided with valve sleeves 17, third sealing rings 18 and fourth sealing rings 19. The valve sleeves 17, third sealing rings 18 and fourth sealing rings 19 are fixed inside the housing 10, thereby connecting the two regulating valves 16 and providing the stability of the overall device.

[0035] The housing 10 is equipped with two telescopic springs 20, which are respectively engaged with the corresponding connecting rods 15. When the two connecting rods 15 are pushed, they will squeeze the corresponding telescopic springs 20, causing the two telescopic springs 20 to be compressed. When the door is rotated in the opposite direction, the cam 7 is reset, and the two telescopic springs 20 push the corresponding connecting rods 15 in the opposite direction through the elastic force, so that the cam 7 is quickly reset and the door is quickly closed.

[0036] Both cylinder heads 33 are equipped with a fifth sealing ring 23. One end of each of the two telescopic springs 20 is fitted with a non-perforated piston 22 and a perforated piston 24, respectively. Both the non-perforated piston 22 and the perforated piston 24 are fixed by piston pins 21. Both the non-perforated piston 22 and the perforated piston 24 are equipped with a first gasket 25 and a filter screen 26. The perforated piston 24 is equipped with a steel ball 27. The non-perforated piston 22 and the perforated piston 24 limit the corresponding telescopic springs 20 to prevent them from shifting during the extension and retraction process, thus ensuring strong stability.

[0037] The housing 10 contains a spring seat 29. An adjusting nut 28 is installed on one side of the spring seat 29, and a sixth sealing ring 30 is installed on the other side of the spring seat 29. An adjusting bolt 32 is installed inside the housing 10. A second washer 31 is installed at one end of the adjusting bolt 32. When it is necessary to adjust the closing force, the adjusting nut 28 is turned by wrench, which causes the adjusting nut 28 to rotate, thereby causing the adjusting bolt 32 to rotate. This causes the adjusting bolt 32 to rotate, thereby causing the spring seat 29 to rotate, which in turn compresses the two telescopic springs 20. The spring seat 29 is then adjusted to the designated position, thereby compressing and extending the telescopic springs 20, thus achieving the adjustment of the closing force. It can be adjusted at will according to the actual situation, with strong functionality and a simple and reliable structure.

[0038] The spring seat 29 is threadedly connected to the adjusting bolt 32. The spring seat 29 cooperates with two telescopic springs 20 to quickly adjust the force required to open or close the door. It can be quickly adjusted when dealing with strong winds and harsh environments, and can also be quickly adjusted when used by the elderly or children, which greatly improves the user experience and solves the problem that the fixing force of existing springs is not easy to adjust.

[0039] The working principle of this embodiment is as follows: When the door is rotated, it drives the cam 7 to rotate, causing the cam 7 to rotate within the second sealing ring 3 and the first bearing 4, and causing the cam 7 to rotate within the grooves of the two connecting rods 15. Since the cam 7 is in close contact with the grooves of the two connecting rods 15, when the cam 308 rotates within the groove, the friction causes the two connecting rods 15 to move to the left, causing the two connecting rods 15 to push the corresponding telescopic springs 20. At this time, the door is rotated, and the cam 7 is stuck in the grooves of the two connecting rods 15 and presses the two connecting rods 15 to their farthest distance. At this time, the door is not rotated and the door is opened.

[0040] When the door needs to be closed, when the door is rotated in the opposite direction, the cam 7 returns to its original position, and the two telescopic springs 20 push the corresponding connecting rod 15 in the opposite direction through their elastic force, so that the cam 7 quickly returns to its original position and the door closes quickly.

[0041] When the outdoor wind speed is high, it is necessary to increase the force required to open the door. To adjust the force required to close the door, turn the adjusting nut 28 with a wrench. This will cause the adjusting nut 28 to rotate, which in turn will cause the adjusting bolt 32 to rotate. This will cause the adjusting bolt 32 to rotate, which in turn will cause the spring seat 29 to rotate. This will compress the two telescopic springs 20, allowing the spring seat 29 to be adjusted to the designated position and thus compressing the telescopic springs 20. To make it easier for the elderly or children to open the door, it is necessary to reduce the force required to open the door. This is done by turning the adjusting nut 28 in the opposite direction with a wrench, which will move the spring seat 29 in the opposite direction and unfold the telescopic springs 20, thereby adjusting the force required to close the door.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A double bar spring structure comprising a housing (10), characterized by: The top side of the shell (10) is provided with an axle cover (1), and a first sealing ring (2) is arranged between the axle cover (1) and the shell (10). The bottom center of the axle cover (1) is provided with a second sealing ring (3), the bottom of the second sealing ring (3) is provided with a first bearing (4), and the bottom of the first bearing (4) is provided with a second upper drag plate (12). The shell (10) is provided with two cylinder covers (33) on one side.

2. The double bar ground spring structure according to claim 1, wherein The center of the second upper drag plate (12) is provided with a cam (7), the cam (7) penetrates the second sealing ring (3) and the first bearing (4), the bottom of the cam (7) is provided with a first upper drag plate (8), and the bottom outer wall of the cam (7) is provided with a second bearing (9).

3. The double bar spring structure according to claim 1, wherein Two connecting rods (15) are arranged in the shell (10), the second upper drag plate (12) is fixed by a plurality of screws (11), and the second upper drag plate (12) is fixed by a plurality of front shafts (5), front pulleys (6), rear shafts (13) and rear pulleys (14). The two connecting rods (15) cooperate with the cam (7).

4. The double bar ground spring structure of claim 1, wherein Two adjusting valves (16) are arranged on one side in the shell (10), and the outer walls of the two adjusting valves (16) are provided with valve sleeves (17), third sealing rings (18) and fourth sealing rings (19).

5. The dual bar spring structure of claim 3, wherein Two telescopic springs (20) are arranged in the shell (10), and the two telescopic springs (20) are respectively matched with corresponding connecting rods (15).

6. A double bar spring structure according to claim 5, wherein Fifth sealing rings (23) are arranged in the two cylinder covers (33), one ends of the two telescopic springs (20) are respectively sleeved with a non-hole piston (22) and a hole piston (24), the non-hole piston (22) and the hole piston (24) are fixed by piston pins (21), the non-hole piston (22) and the hole piston (24) are respectively provided with first gaskets (25) and filter screens (26), and the hole piston (24) is provided with steel balls (27).

7. The dual bar spring structure of claim 5, wherein A spring seat (29) is arranged in the shell (10), an adjusting nut (28) is arranged on one side of the spring seat (29), a sixth sealing ring (30) is arranged on the other side of the spring seat (29), an adjusting bolt (32) is arranged in the shell (10), and a second gasket (31) is arranged at one end of the adjusting bolt (32).

8. The double bar spring structure according to claim 7, wherein The spring seat (29) is threadedly connected with the adjusting bolt (32), and the spring seat (29) cooperates with the two telescopic springs (20).

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