Differential force damping structure

Abstract

The utility model discloses a differential force type damping structure belongs to hydraulic hinge field for the automatic buffer closing door of door leaf, has solved the problem that different force can be distributed to open door, close door, it includes the upper page piece, the lower page piece and along the hinge axis setting upper sleeve pipe, lower sleeve pipe, the upper page piece is sleeved and fixed in the upper sleeve pipe, the lower page piece is sleeved and fixed in the lower sleeve pipe, the upper sleeve pipe rotation sleeve joint is in the lower sleeve pipe, the upper sleeve pipe sleeve joint has hydraulic damper, the lower sleeve pipe rotation sleeve joint has transmission shaft, the lower sleeve pipe is built -in spring, hydraulic damper, transmission shaft, spring along hinge axis setting in proper order, the spring abuts on transmission shaft, transmission shaft abuts on the piston rod of hydraulic damper, when transmission shaft along hinge axis movement, transmission shaft relative lower sleeve pipe or upper sleeve pipe produces circumferential force.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic hinges, and specifically relates to a hydraulic hinge that can drive the opening and closing force of a door leaf. Background Technology

[0002] Common hydraulic hinges consist of a spring, a transmission system, and a hydraulic system, all housed within the hinge shaft. They smoothly dissipate the mechanical energy of the spring through the damping effect of the hydraulic system. The spring's mechanical energy is stored during the opening process, and released during the closing process, with the hydraulic system controlling the energy release, thus achieving a controllable automatic closing motion. However, in practical use, opening a door requires significant force, while automatic closing cannot provide sufficient force to ensure a fast closing speed. This situation presents challenges for the use of hydraulic hinges. Utility Model Content

[0003] The purpose of this invention is to provide a differential damping structure that solves the problem of distributing different forces when opening and closing a door by improving the transmission structure.

[0004] The differential damping structure includes an upper leaf, a lower leaf, and an upper sleeve and a lower sleeve arranged along the hinge axis. The upper leaf is sleeved and fixed to the upper sleeve, and the lower leaf is sleeved and fixed to the lower sleeve. The upper sleeve is rotatably sleeved to the lower sleeve. A hydraulic damper is sleeved on the upper sleeve, and a drive shaft is rotatably sleeved on the lower sleeve. A spring is built into the lower sleeve. The hydraulic damper, drive shaft, and spring are arranged sequentially along the hinge axis. The spring abuts against the drive shaft, and the drive shaft abuts against the piston rod of the hydraulic damper. When the drive shaft moves along the hinge axis, the drive shaft generates an oblique force relative to the lower sleeve or the upper sleeve.

[0005] The outer wall of the lower sleeve is provided with two oblique grooves, and the outer wall of the upper sleeve is provided with two spiral grooves. The drive shaft passes through the oblique grooves and spiral grooves in sequence through the two ends of the drive pin.

[0006] The outer wall of the lower sleeve is provided with two arc-shaped grooves, and the outer wall of the upper sleeve is provided with two spiral grooves. The transmission shaft passes through the arc-shaped grooves and spiral grooves in sequence through the two ends of the transmission pin.

[0007] The upper end of the upper sleeve is closed by an upper cover, which is abutted against a hydraulic damper by an adjusting screw, and the screw head of the adjusting screw protrudes from the operating port of the upper cover.

[0008] The lower end of the lower sleeve is closed by a lower cover, which is abutted against a spring by a pressure adjusting screw, and the screw head of the pressure adjusting screw protrudes from the operating port of the lower cover.

[0009] The upper and lower pages are connected and fixed to the upper and lower sleeves respectively by rotating sleeves and keys.

[0010] The rotating sleeve of the upper page plate is axially abutted against the rotating sleeve of the lower page plate via a plane bearing.

[0011] The lower end of the upper sleeve is provided with circumferential balls, and the upper end of the lower sleeve is provided with a limiting hole, wherein the balls are matched with the limiting hole.

[0012] The beneficial effects of this utility model are as follows: Since the outer wall of the lower sleeve or the upper sleeve is provided with an oblique groove or an arc groove, as the transmission shaft moves along the hinge axis, the transmission pin moves along the oblique groove or the arc groove. Then, the transmission pin acts on the oblique groove or the arc groove to generate an oblique force. This oblique force and the direction of movement of the transmission pin form a pressure angle. The existence of this pressure angle increases the closing force and reduces the opening force. In addition, the door is quiet when it is locked. Attached Figure Description

[0013] Figure 1 This is a perspective view of the differential damping structure of this utility model; Figure 2 for Figure 1 The exploded view of the differential damping structure shown. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] like Figure 1 , 2 As shown, the differential damping structure includes an upper plate 1, a lower plate 2, a hydraulic damper 3, a drive shaft 4, a spring 5, an upper sleeve 6, and a lower sleeve 7. The upper plate 1 and the lower plate 2 are respectively sleeved and fixed to the upper sleeve 6 and the lower sleeve 7 through a rotating sleeve 16 and a key connection 17. The rotating sleeve 16 of the upper plate 1 is axially abutted against the rotating sleeve 16 of the lower plate 2 through a plane bearing 18.

[0016] The axis of the rotating sleeve 16 of the upper page 1 and the lower page 2 is the hinge axis. The upper sleeve 6 and the lower sleeve 7 are arranged from top to bottom along the hinge axis. The upper sleeve 6 and the lower sleeve 7 have a hydraulic damper 3, a drive shaft 4 and a spring 5 built in from top to bottom. The hydraulic damper 3, the drive shaft 4 and the spring 5 are also arranged along the hinge axis.

[0017] The upper end of the upper sleeve 6 is closed by the upper cover 12. The upper cover 12 abuts against the bottom of the cylinder of the hydraulic damper 3 by the adjusting screw 13. The screw head 13a of the adjusting screw 13 protrudes from the operating port 12a of the upper cover 12. By turning the screw head 13a of the adjusting screw 13 through the operating port 12a of the upper cover 12, the feed amount of the adjusting screw 13a is adjusted, which pushes the hydraulic damper 3 and the piston rod 3a to move axially to adjust the feed amount of the piston rod 3a, thereby adjusting the damping force of the hydraulic damper 3 to achieve a silent locking effect.

[0018] The lower end of the lower sleeve 7 is closed by the lower cover 14. The lower cover 14 abuts against the lower end of the spring 5 by the adjusting screw 15. The screw head of the adjusting screw 15 protrudes from the operating port 14a of the lower cover 14. By turning the screw head of the adjusting screw 15 through the operating port 14a of the lower cover 14, the feed amount of the adjusting screw 15 is adjusted, and the adjusting screw 15 is pushed to move axially to adjust the top pressure of the adjusting screw 15. The deeper the adjusting screw 15 is screwed in, the greater the axial pressure on the spring 5 when the door is opened, and the greater the elastic force released by the spring 5 when the door is closed, and the greater the closing force.

[0019] A hydraulic damper 3 is fitted onto the upper section of the upper sleeve 6. The piston rod 3a of the hydraulic damper 3 abuts against the upper end of the drive shaft 4. The drive shaft 4 is built into the upper section of the lower sleeve 7. The lower end of the drive shaft 4 abuts against the head 22a of the positioning pin 22. A spring 5 is fitted onto the body 22b of the positioning pin 22. The upper end of the spring 5 abuts against the bottom of the head 22a. Ball bearings 19 are circumferentially arranged at the lower end of the upper sleeve 6. A limiting hole 20 is provided at the upper end of the lower sleeve 7. The ball bearings 19 match the limiting hole 20. When the upper sleeve 6 and the lower sleeve 7 rotate relative to each other, each ball bearing 16 engages with the limiting hole 20, causing a sound during rotation, which facilitates the judgment of the closed or open state of the door.

[0020] In one embodiment, the lower section of the upper sleeve 6 is provided with an insertion shaft 21, and the upper section of the lower sleeve 7 is sleeved on the insertion shaft 21. The outer wall of the sleeved portion of the lower sleeve 7 and the insertion shaft 21 is provided with two oblique grooves 8 of the same shape and arranged in a cross configuration. The outer wall of the insertion shaft 21 is provided with two spiral grooves 9 of the same shape and arranged in a cross configuration. A transmission pin 10 is arranged radially near the upper end of the transmission shaft 4, and the two ends of the transmission pin 10 pass through the oblique grooves 8 and the spiral grooves 9 in sequence.

[0021] In another embodiment, the lower section of the upper sleeve 6 is provided with an insertion shaft 21, and the upper section of the lower sleeve 7 is sleeved on the insertion shaft 21. The outer wall of the sleeved portion of the lower sleeve 7 and the insertion shaft 21 is provided with two arc-shaped grooves 11 of the same shape and arranged in a cross configuration. The outer wall of the insertion shaft 21 is provided with two spiral grooves 9 of the same shape and arranged in a cross configuration. A transmission pin 10 is arranged radially near the upper end of the transmission shaft 4, and the two ends of the transmission pin 10 pass through the arc-shaped groove 11 and the spiral groove 9 respectively.

[0022] The following example illustrates the operation of the differential force damping structure during door opening and closing: When the door is open, the lower hinge 2 rotates relative to the upper hinge 1 to open. The lower hinge 2 drives the lower sleeve 7 to rotate, and the upper hinge 1 drives the upper sleeve 6 to rotate. The inclined groove 8 of the lower sleeve 7 applies an inclined force to the transmission pin 10, causing the transmission shaft 4 to move downward along the hinge axis and drive the transmission pin 10 to move downward along the spiral groove 9, thereby pushing the nail head 22a of the positioning pin 22 to compress the spring 5 to store energy. Since the transmission pin 10 applies a reaction force to the inclined groove 8, and this reaction force is an inclined force, this inclined force and the direction of movement of the transmission pin 10 form a pressure angle. This pressure angle assists the rotation of the lower sleeve 7, thereby reducing the force required to open the door and making it easier for the user to open the door.

[0023] When the door is closed, as the external force on the lower leaf 2 disappears, the spring 5 pushes the head 22a of the positioning pin 22 to release the compressed energy, causing the drive shaft 4 to move upward along the hinge axis. This drives the transmission pin 10 to move upward along the inclined groove 8 and the spiral groove 9, thereby causing the upper sleeve 6 and the lower sleeve 7 to rotate relative to each other. The upper sleeve 6 drives the upper leaf 1 to rotate, and the lower sleeve 7 drives the lower leaf 2 to rotate, thus achieving automatic door closing. At the same time, the drive shaft 4 abuts against the piston rod 3a of the hydraulic damper 3, using damping force to achieve a buffered closing of the door leaf. Because the transmission pin 10 applies an inclined force to the inclined groove 8, this inclined force and the direction of movement of the transmission pin 10 form a pressure angle. This pressure angle assists the rotation of the lower sleeve 7, thereby increasing the closing force, making the automatic closing smoother, and improving the quietness when the door is locked.

[0024] The above-described embodiment with an arc-shaped groove illustrates the operation of the differential force damping structure during door opening and closing: When the door is open, the lower hinge 2 rotates relative to the upper hinge 1 to open. The lower hinge 2 drives the lower sleeve 7 to rotate, and the upper hinge 1 drives the upper sleeve 6 to rotate. The arc-shaped groove 11 of the lower sleeve 7 applies oblique force to the transmission pin 10, causing the transmission shaft 4 to move downward along the hinge axis and drive the transmission pin 10 to move downward along the spiral groove 9, thereby pushing the nail head 22a of the positioning pin 22 to compress the spring 5 to store energy. Since the transmission pin 10 applies a reaction force to the arc-shaped groove 11, and this reaction force is an oblique force, this oblique force and the direction of movement of the transmission pin 10 form a pressure angle. This pressure angle assists the rotation of the lower sleeve 7, thereby reducing the effort required to open the door and making it easier for the user to open the door.

[0025] When the door is closed, as the external force on the lower leaf 2 disappears, the spring 5 pushes the head 22a of the positioning pin 22 to release the compressed energy, causing the drive shaft 4 to move upward along the hinge axis. This drives the transmission pin 10 to move upward along the arc groove 11 and the spiral groove 9, thereby causing the upper sleeve 6 and the lower sleeve 7 to rotate relative to each other. The upper sleeve 6 drives the upper leaf 1 to rotate, and the lower sleeve 7 drives the lower leaf 2 to rotate, thus achieving automatic door closing. At the same time, the drive shaft 4 abuts against the piston rod 3a of the hydraulic damper 3, using damping force to achieve a buffered closing of the door leaf. Because the transmission pin 10 applies an oblique force to the arc groove 11, this oblique force and the direction of movement of the transmission pin 10 form a pressure angle. This pressure angle assists the rotation of the lower sleeve 7, thereby increasing the closing force, making the automatic closing smoother, and improving the quietness when the door is locked.

Claims

1. A differential damping structure, characterized in that, The hinge includes an upper leaf piece (1), a lower leaf piece (2), and an upper sleeve (6) and a lower sleeve (7) arranged along the hinge axis. The upper leaf piece (1) is sleeved and fixed to the upper sleeve (6), and the lower leaf piece (2) is sleeved and fixed to the lower sleeve (7). The upper sleeve (6) is rotatably sleeved to the lower sleeve (7). The upper sleeve (6) is sleeved with a hydraulic damper (3), and the lower sleeve (7) is rotatably sleeved with a drive shaft (4). The lower sleeve (7) contains a spring (5). The hydraulic damper (3), drive shaft (4), and spring (5) are arranged sequentially along the hinge axis. The spring (5) abuts against the drive shaft (4), and the drive shaft (4) abuts against the piston rod of the hydraulic damper (3). When the drive shaft (4) moves along the hinge axis, the drive shaft (4) generates an oblique force relative to the lower sleeve (7) or the upper sleeve (6).

2. The differential damping structure according to claim 1, characterized in that, The outer wall of the lower sleeve (7) is provided with two oblique grooves (8), and the outer wall of the upper sleeve (6) is provided with two spiral grooves (9). The transmission shaft (4) passes through the oblique grooves (8) and spiral grooves (9) in sequence through the two ends of the transmission pin (10).

3. The differential damping structure according to claim 1, characterized in that, The outer wall of the lower sleeve (7) is provided with two arc-shaped grooves (11), and the outer wall of the upper sleeve (6) is provided with two spiral grooves (9). The transmission shaft (4) passes through the arc-shaped grooves (11) and spiral grooves (9) in sequence through the two ends of the transmission pin (10).

4. The differential damping structure according to claim 1, characterized in that, The upper end of the upper sleeve (6) is closed by the upper cover (12), and the upper cover (12) is abutted against the hydraulic damper (3) by the adjusting screw (13). The screw head of the adjusting screw (13) protrudes from the operating port of the upper cover (12).

5. The differential damping structure according to claim 1, characterized in that, The lower end of the lower sleeve (7) is closed by the lower cover (14), and the lower cover (14) abuts against the spring (5) by the pressure adjusting screw (15), and the screw head of the pressure adjusting screw (15) protrudes from the operating port of the lower cover (14).

6. The differential damping structure according to claim 1, characterized in that, The upper page (1) and lower page (2) are respectively connected and fixed to the upper sleeve (6) and lower sleeve (7) by rotating sleeve (16) and key connection (17).

7. The differential damping structure according to claim 6, characterized in that, The rotating sleeve (16) of the upper page (1) is axially abutted against the rotating sleeve (16) of the lower page (2) via a plane bearing (18).

8. The differential damping structure according to claim 1, characterized in that, The lower end of the upper sleeve (6) is provided with a ball bearing (19) along the circumferential direction, and the upper end of the lower sleeve (7) is provided with a limiting hole (20). The ball bearing (19) matches the limiting hole (20).

Images