Parallel bar floor spring structure

Abstract

The invention discloses a parallel-bar floor spring structure, and belongs to the technical field of floor spring equipment, the parallel-bar floor spring structure comprises a shell, one side of the top of the shell is provided with a shaft cover, 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 an adjusting nut, a spring seat and an 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 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] The invention belongs to the technical field of floor spring equipment, and in particular relates to a double-bar floor spring structure. Background Art

[0002] The floor spring is a hydraulic door closing device. Its main structure is composed of a housing, a cam, a spring, a piston and other connecting parts. It is filled with hydraulic oil with damping effect. The door leaf is opened or closed by the rotation direction of the cam. It is usually installed in the base plate or on the door frame. The double-cylinder floor spring has two springs arranged in parallel, which can evenly distribute the spring force to the two springs. When the floor springs reach the same closing torque, the spring diameter and wire diameter can be made smaller, that is, the body thickness of the double-cylinder floor spring is thinner than that of the ordinary single-spring floor spring. Therefore, the double-cylinder floor spring is usually used in occasions where there is a limit on the depth of the ground opening for the installation of the floor spring.

[0003] Most of the existing double-cylinder floor springs have fixed force, that is, the spring of the internal energy storage device is a fixed load, one end of the spring uses the shell as a support part, and the other end is against the piston in the damping cylinder to drive the piston to reset. The spring torque cannot be adjusted structurally, and the door closing force cannot be adjusted according to the usage scenario. For example, in areas with unstable environmental wind pressure, in normal use, in order to ensure the passage of the elderly and children, the door opening force is required to be lighter, while when the external wind speed is high, the door opening force needs to be increased to protect indoor property and personal safety. Therefore, it is very necessary to adjust the closing force of the door closing device. At the same time, the design of traditional floor spring adjustment parts is relatively complicated, and many improvements are made on the basis of the existing floor springs, which makes the structure complex and the reliability low. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned 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, comprising a shell, a shaft cover is installed on one side of the top of the shell, and a first sealing ring is provided between the shaft cover and the shell;

[0006] A second sealing ring is provided at the bottom center of the shaft cover, a first bearing is provided at the bottom of the second sealing ring, and a second upper carriage is provided at the bottom of the first bearing;

[0007] Two cylinder covers are arranged on one side of the housing.

[0008] Furthermore, a cam is provided at the center of the second upper drag plate, the cam passes through the second sealing ring and the first bearing, the first upper drag plate is provided at the bottom of the cam, and the second bearing is provided on the outer wall of the bottom of the cam.

[0009] Through the above technical solution, when the door is rotated, the cam is driven to rotate, so that the cam rotates in the second sealing ring and the first bearing, and the cam is supported by the second bearing.

[0010] Furthermore, two connecting rods are installed in the shell, the second upper drag plate is fixed by multiple screws, the second upper drag plate is fixed by multiple front axles, front pulleys, rear axles and rear pulleys, and the two connecting rods cooperate with the cam.

[0011] Through the above technical solution, when the door is rotated, the cam is driven to rotate, so that the cam rotates in the second sealing ring and the first bearing, and the cam rotates in the two connecting rod grooves. Since the cam is in close contact with the two connecting rod grooves, when the cam rotates in the groove, the two connecting rods are driven to move to the left due to the action of friction, so that the two connecting rods push the corresponding telescopic springs. At this time, the door is rotated, and the cam is stuck in the grooves of the two connecting rods and squeezes the two connecting rods to the farthest distance. At this time, the door cannot be rotated, and the door is opened. When it needs to be closed, the door needs to be rotated in the opposite direction, thereby driving the cam to reset.

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

[0013] Through the above technical solution, the valve sleeve, the third sealing ring and the fourth sealing ring are fixed in the housing, so as to connect the two regulating valves and provide fixity of the overall device.

[0014] Furthermore, two telescopic springs are provided in the shell, and the two telescopic springs are respectively matched with corresponding connecting rods.

[0015] Through the above technical solution, when the two connecting rods are pushed, the corresponding telescopic springs will be squeezed, so that the two telescopic springs are compressed. 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 elastic force, so that the cam is quickly reset and the door is quickly closed.

[0016] Furthermore, a fifth sealing ring is provided in each of the two cylinder heads, one end of the two telescopic springs is respectively covered with a non-hole piston and a perforated piston, the non-hole piston and the perforated piston are fixed by a piston pin, a first gasket and a filter are provided in each of the non-hole piston and the perforated piston, and a steel ball is provided in the perforated piston.

[0017] Through the above technical solution, the piston without holes and the piston with holes limit the corresponding telescopic spring to prevent it from shifting during the telescopic process, and the stability is strong.

[0018] Furthermore, a spring seat is provided in the shell, 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 in the shell, and a second gasket is provided at one end of the adjusting bolt.

[0019] Through the above technical solution, when it is necessary to adjust the force of closing the door, the adjusting nut is rotated by a wrench, so that the rotation of the adjusting nut drives the adjusting bolt to rotate, and the rotation of the adjusting bolt drives the spring seat to rotate, so that the spring seat squeezes the two telescopic springs, and the spring seat is adjusted to a specified position to achieve compression and extension of the telescopic springs, thereby achieving adjustment of the force of closing the door. It can be adjusted at will according to actual conditions, with strong functionality and 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] Through the above technical solution, the force required to open or close the door can be quickly adjusted. It can be quickly adjusted when dealing with severe windy environments. It can also be quickly adjusted when used by the elderly or children, which greatly improves the user's use effect and solves the problem that the existing spring fixing force is difficult to adjust.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention is designed with an adjusting nut, a spring seat and an adjusting bolt. When the force of closing the door needs to be adjusted, the adjusting nut is rotated by a wrench, so that the rotation of the adjusting nut drives the adjusting bolt to rotate, and the rotation of the adjusting bolt drives the spring seat to rotate, so that the spring seat squeezes the two telescopic springs, and the spring seat is adjusted to a specified position to achieve compression and extension of the telescopic springs, thereby achieving adjustment of the force of closing the door. It can be adjusted at will according to actual conditions, has strong functionality, and is simple and reliable in structure. (2) The present invention is designed with a cam, a connecting rod and a telescopic spring. The rotation of the door drives the cam to rotate, thereby pushing the two connecting rods, so that the two connecting rods push the corresponding telescopic springs. At this time, the door is rotated to achieve opening of the door. When the door needs to be closed, the door is rotated in the opposite direction. At this time, the cam is reset, and the two telescopic springs push the corresponding connecting rods in the opposite direction through elastic force, so that the cam is quickly reset and the door is quickly closed. The structure is simple and the door can be opened and closed automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall exploded view of the present invention;

[0024] Figure 2 It is an exploded view of the parts on the housing of the present invention;

[0025] Figure 3 It is an exploded view of the parts inside the housing of the present invention;

[0026] Figure 4It is an exploded view of the spring seat parts of the present invention.

[0027] 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 drag plate; 9. Second bearing; 10. Housing; 11. Screw; 12. Second upper drag plate; 13. Rear axle; 14. Rear pulley; 15. Connecting rod; 16. Regulating valve; 17. Valve sleeve; 18. Third sealing ring; 19. Fourth sealing ring; 20. Telescopic spring; 21. Piston pin; 22. Piston without hole; 23. Fifth sealing ring; 24. Piston with hole; 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 DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] like Figure 1-Figure 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 carriage 12 is provided at the bottom of the first bearing 4;

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

[0032] A cam 7 is provided at the center of the second upper drag plate 12, and the cam 7 passes through the second sealing ring 3 and the first bearing 4. A first upper drag plate 8 is provided at the bottom of the cam 7, and a second bearing 9 is provided on the bottom outer wall of the cam 7. When the door is rotated, the cam 7 is driven to rotate, so that the cam 7 rotates in 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 in the shell 10, and the second upper drag plate 12 is fixed by multiple screws 11. The second upper drag plate 12 is fixed by multiple front shafts 5, front pulleys 6, rear shafts 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, so that the cam 7 rotates in the second sealing ring 3 and the first bearing 4, so that the cam 7 rotates in 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 in the groove, the friction force drives the two connecting rods 15 to move to the left, so that the two connecting rods 15 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 the farthest distance. At this time, the door is unable to rotate, and the door is opened. 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 of the shell 10, and 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 in the shell 10, thereby connecting the two regulating valves 16 and providing fixity of the overall device.

[0035] Two telescopic springs 20 are provided in the shell 10, and the two telescopic springs 20 are respectively matched with the corresponding connecting rods 15. When the two connecting rods 15 are pushed, the corresponding telescopic springs 20 will be squeezed, so that the two telescopic springs 20 are 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 elastic force, so that the cam 7 is quickly reset and the door is quickly closed.

[0036] A fifth sealing ring 23 is provided in each of the two cylinder covers 33, and one end of the two telescopic springs 20 is respectively covered with a non-hole piston 22 and a perforated piston 24, which are fixed by a piston pin 21. A first gasket 25 and a filter screen 26 are provided in each of the non-hole piston 22 and the perforated piston 24, and a steel ball 27 is provided in the perforated piston 24. The non-hole piston 22 and the perforated piston 24 limit the corresponding telescopic spring 20 to prevent it from shifting during the telescopic process, and the stability is strong.

[0037] A spring seat 29 is provided in the shell 10, and an adjusting nut 28 is installed on one side of the spring seat 29, and a sixth sealing ring 30 is provided on the other side of the spring seat 29. An adjusting bolt 32 is provided in the shell 10, and a second gasket 31 is provided at one end of the adjusting bolt 32. When it is necessary to adjust the force of closing the door, the adjusting nut 28 is rotated by a wrench, so that the adjusting nut 28 rotates to drive the adjusting bolt 32 to rotate, and the adjusting bolt 32 rotates to drive the spring seat 29 to rotate, so that the spring seat 29 squeezes the two telescopic springs 20, and the spring seat 29 is adjusted to a specified position to realize compression and extension of the telescopic spring 20, thereby realizing the adjustment of the force of closing the door. It can be adjusted at will according to actual conditions, with strong functionality and simple and reliable structure.

[0038] The spring seat 29 is threadedly connected to the adjusting bolt 32. The spring seat 29 cooperates with the two telescopic springs 20 to quickly adjust the force required to open or close the door. It can be quickly adjusted when dealing with severe windy environments. It can also be quickly adjusted when facing the elderly or children. It greatly improves the user's use effect and solves the problem that the existing spring fixing force is difficult to adjust.

[0039] The working principle of this embodiment is as follows: when the door is rotated, the cam 7 is driven to rotate, so that the cam 7 rotates in the second sealing ring 3 and the first bearing 4, so that the cam 7 rotates in 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 in the groove, the friction force drives the two connecting rods 15 to move to the left, so that the two connecting rods 15 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 squeezes the two connecting rods 15 to the farthest distance. At this time, the door is immobilized and the door is opened;

[0040] When the door needs to be closed, the door is rotated in the reverse direction, at which time the cam 7 is reset, and the two telescopic springs 20 push the corresponding connecting rods 15 in the reverse direction through elastic force, so that the cam 7 is quickly reset and the door is quickly closed;

[0041] When the outdoor wind speed is high, it is necessary to increase the force of opening the door. When it is necessary to adjust the force of closing the door, the adjusting nut 28 is rotated by a wrench, so that the adjusting nut 28 rotates to drive the adjusting bolt 32 to rotate, and the adjusting bolt 32 rotates to drive the spring seat 29 to rotate, so that the spring seat 29 squeezes the two telescopic springs 20, and the spring seat 29 is adjusted to a specified position to achieve compression of the telescopic spring 20. In order to facilitate opening by the elderly or children, it is necessary to reduce the force of opening the door. The adjusting nut 28 is also rotated in the opposite direction with a wrench, so that the spring seat 29 moves in the opposite direction, and the telescopic spring 20 is expanded, thereby achieving adjustment of the force of closing the door.

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

Claims

1. A double-bar floor spring structure, comprising a housing (10), characterized in that: 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); 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 drag plate (12) is provided at the bottom of the first bearing (4); Two cylinder covers (33) are provided on one side of the housing (10).

2. A double-bar floor spring structure according to claim 1, characterized in that: A cam (7) is provided at the center of the second upper drag plate (12), and the cam (7) passes through the second sealing ring (3) and the first bearing (4). The first upper drag plate (8) is provided at the bottom of the cam (7), and a second bearing (9) is provided on the outer wall of the bottom of the cam (7).

3. The double-bar floor spring structure according to claim 1, characterized in that: Two connecting rods (15) are installed in the housing (10); the second upper drag plate (12) is fixed by a plurality of screws (11); the second upper drag plate (12) is fixed by a plurality of front axles (5), front pulleys (6), rear axles (13) and rear pulleys (14); and the two connecting rods (15) cooperate with the cam (7).

4. The double-bar floor spring structure according to claim 1, characterized in that: Two regulating valves (16) are provided on one side of the housing (10), and outer walls of the two regulating valves (16) are provided with valve sleeves (17), a third sealing ring (18) and a fourth sealing ring (19).

5. The double-bar floor spring structure according to claim 3, characterized in that: Two telescopic springs (20) are arranged in the housing (10), and the two telescopic springs (20) are respectively matched with corresponding connecting rods (15).

6. A double-bar floor spring structure according to claim 5, characterized in that: A fifth sealing ring (23) is provided in each of the two cylinder covers (33); one end of each of the two telescopic springs (20) is respectively covered with a non-porous piston (22) and a perforated piston (24); the non-porous piston (22) and the perforated piston (24) are fixed by a piston pin (21); a first gasket (25) and a filter screen (26) are provided in each of the non-porous piston (22) and the perforated piston (24); and a steel ball (27) is provided in the perforated piston (24).

7. The double-bar floor spring structure according to claim 5, characterized in that: A spring seat (29) is provided in the housing (10), an adjusting nut (28) is installed on one side of the spring seat (29), a sixth sealing ring (30) is provided on the other side of the spring seat (29), an adjusting bolt (32) is provided in the housing (10), and a second gasket (31) is provided at one end of the adjusting bolt (32).

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

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