Flat-opening buffer hinge

Abstract

The utility model discloses a side-hung buffering hinge, which belongs to the field of buffering hinges, is used for buffering door closing of a door leaf, solves the problem of radial runout of a transmission shaft, and comprises a right hinge piece, a left hinge piece, a damper, the transmission shaft, a lower sleeve, a transmission sleeve and an upper sleeve, and the lower sleeve, the transmission sleeve and the upper sleeve are sequentially arranged along the same axis. One end of the spring abuts against one end of the lower sleeve, the other end of the lower sleeve is connected to one end of the upper sleeve, the other end of the upper sleeve is connected to the damper in a sleeved mode, key grooves distributed in the circumferential direction are formed in the inner wall of the lower sleeve, key teeth are arranged at one end of the transmission shaft, and the key teeth are installed in the key grooves in a sliding mode. The other end of the spring abuts against the key groove, the other end of the transmission shaft abuts against the damper, the transmission shaft can be driven to do axial movement through relative rotation of the transmission sleeve and the upper sleeve, and relative rotation of the transmission sleeve and the upper sleeve can be driven through axial movement of the transmission shaft.

Description

Technical Field

[0001] This utility model belongs to the field of buffer hinges, and specifically relates to a casement buffer hinge. Background Technology

[0002] A typical soft-close hinge consists of two flaps, an energy storage element, a drive shaft, and a buffer element. The two flaps are respectively installed on the door leaf and the door frame. When the door leaf is opened by external force, one flap rotates relative to the other. This rotational torque is transmitted to the buffer element via a transmission mechanism, thus achieving a soft-close closing of the door leaf. When a spring is used as the energy storage element, the drive shaft compresses the spring to store energy. However, the drive shaft is prone to radial runout, which increases the friction between the spring and the sleeve, generating noise and significantly affecting the performance. Utility Model Content

[0003] The purpose of this invention is to provide a hinged, buffer hinge that solves the problem of radial runout of the drive shaft.

[0004] The hinged hinge includes a right leaf, a left leaf, a damper, a drive shaft, and a lower sleeve, a drive sleeve, and an upper sleeve arranged sequentially along the same axis. The right leaf is fitted and fixed to the drive sleeve, and the left leaf is fitted and fixed to the lower sleeve. The drive sleeve is rotatably fitted to the upper sleeve, and the upper sleeve is rotatably fitted to the drive shaft. A spring is installed inside the lower sleeve, with one end of the spring abutting against one end of the lower sleeve and the other end of the lower sleeve connected to one end of the upper sleeve. The other end of the upper sleeve is fitted to the damper. The inner wall of the lower sleeve has circumferentially distributed keyways. One end of the drive shaft has key teeth that are slidably installed in the keyways. The other end of the spring abuts against the keyways, and the other end of the drive shaft abuts against the damper. The relative rotation of the drive sleeve and the upper sleeve can drive the drive shaft to move axially, and the axial movement of the drive shaft can drive the relative rotation of the drive sleeve and the upper sleeve.

[0005] The upper sleeve is provided with a longitudinal groove that runs radially through it, and the transmission sleeve is provided with two spiral grooves. The other end of the transmission shaft passes through the longitudinal groove and the spiral groove in sequence through the two ends of the transmission pin.

[0006] The other end of the upper sleeve is closed by an upper cover, which is abutted against the damper by an adjusting screw, the screw head of which protrudes from the operating port of the upper cover.

[0007] One end of the lower sleeve is closed by a lower cover, and the lower cover is abutted against one end of the spring by a pressure adjusting screw. The screw head of the pressure adjusting screw protrudes from the operating port of the lower cover.

[0008] The right leaf has a rotating part, which is respectively sleeved on the lower sleeve, the transmission sleeve, and the upper sleeve. The right leaf is fixed to the transmission sleeve by a key connection. The left leaf has two rotating parts, one of which is sleeved on the upper sleeve, and the other rotating part is sleeved on and fixed to the lower sleeve by a key connection.

[0009] The two ends of the rotating part of the right leaf are respectively axially abutted against the rotating part of the left leaf through plane bearings.

[0010] The beneficial effects of this utility model are: the transmission shaft is engaged with the keyway of the lower sleeve through the key teeth, so that when the key teeth of the transmission shaft move along the keyway, a radial constraint is formed, which avoids radial runout when the transmission shaft compresses the spring. As a result, the friction between the spring and the inner wall of the lower sleeve is reduced when the spring is compressed, thereby reducing the noise of spring compression. Attached Figure Description

[0011] Figure 1 This is a perspective view of the hinged hinge of this utility model;

[0012] Figure 2 for Figure 1 Exploded view. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] like Figure 1 , 2 As shown, the hinged hinge includes a right leaf 1, a left leaf 2, a damper 3, and a drive shaft 4. A lower sleeve 5, a drive sleeve 6, and an upper sleeve 7 are arranged sequentially along the same axis. The right leaf 1 has a rotating part 8, which is fitted onto the lower sleeve 5, the drive sleeve 6, and the upper sleeve 7 respectively. The right leaf 1 is fixed to the drive sleeve 6 via a key connection 9. The left leaf 2 has two rotating parts 8, one of which is fitted onto the upper sleeve 7, and the other is fitted onto and fixed to the lower sleeve 5 via a key connection 9. The two ends of the rotating part of the right leaf 1 are axially abutted against the rotating part of the left leaf 2 via corresponding plane bearings 10.

[0015] The transmission sleeve 6 is rotatably fitted onto the upper sleeve 7, which in turn is rotatably fitted onto the transmission shaft 4. A spring 11 is installed inside the lower sleeve 5, with one end of the spring 11 abutting against one end of the lower sleeve 5. The other end of the lower sleeve 5 is connected to one end of the upper sleeve 7, and the other end of the upper sleeve 7 is fitted onto the damper 3. The inner wall of the lower sleeve 5 is provided with circumferentially distributed keyways 12. One end of the transmission shaft 4 is provided with key teeth 13, which are slidably mounted on the keyways 12. The other end of the spring 11 abuts against the keyways 12, and the other end of the transmission shaft 4 abuts against the damper 3. The upper sleeve 7 is provided with a radially penetrating longitudinal groove 14, and the transmission sleeve 6 is provided with two helical grooves 15. The other end of the transmission shaft 4 passes through the longitudinal groove 14 and the helical groove 15 sequentially via the two ends of the transmission pin 16. The transmission pin 16 drives the spiral groove 15 and the longitudinal groove 14, thereby enabling the transmission shaft to move axially through the relative rotation of the transmission sleeve and the upper sleeve, and the axial movement of the transmission shaft to drive the relative rotation of the transmission sleeve and the upper sleeve.

[0016] The other end of the upper sleeve 7 is sealed by the upper cover 17, which abuts against the damper 3 via an adjusting screw 18. The screw head of the adjusting screw 18 protrudes from the operating port of the upper cover 17. By turning the screw head of the adjusting screw through the operating port of the upper cover, the feed amount of the adjusting screw is adjusted, which pushes the damper and piston rod to move axially to adjust the feed amount of the piston rod, thereby adjusting the damping force of the damper to achieve a silent effect.

[0017] One end of the lower sleeve 5 is closed by the lower cover 19, which abuts against one end of the spring 11 via the adjusting screw 20. The screw head of the adjusting screw 20 protrudes from the operating port of the lower cover 19. By turning the screw head of the adjusting screw through the operating port of the lower cover, the feed amount of the adjusting screw is adjusted, and the adjusting screw is pushed to move axially to adjust the top pressure of the adjusting screw. The deeper the adjusting screw is screwed in, the greater the axial pressure on the spring when the door is opened, and the greater the elastic force released by the spring when the door is closed, and the greater the closing force.

[0018] The following describes the operation of the hinged door when it opens or closes:

[0019] When the door is opened, the right leaf 1 rotates relative to the left leaf 2 and opens. The transmission sleeve 6 rotates and drives the transmission pin 16 to move downward along the spiral groove 15. The transmission pin 16 drives the transmission shaft 4 to move axially downward through the longitudinal groove 14. The transmission shaft 4 slides through the keyway 12 of the lower sleeve 5 via the key teeth 13, thereby pushing the spring to compress and store energy.

[0020] When the external force that opens the right leaf 1 and left leaf 2 disappears, the spring 11 releases its compressed energy to drive the transmission shaft 4 to move axially upward through the longitudinal groove 14, and drives the transmission pin 16 to move upward along the spiral groove 15, thereby driving the transmission sleeve 6 to rotate. The transmission sleeve 6 drives the right leaf 1 to rotate, realizing automatic door closing. At the same time, the transmission shaft 4 abuts against the piston rod of the damper 3, and the damping force of the damper realizes the buffer closing of the door leaf.

Claims

1. A hinged, buffer hinge, characterized in that, It includes a right leaf (1), a left leaf (2), a damper (3), a drive shaft (4), and a lower sleeve (5), a drive sleeve (6), and an upper sleeve (7) arranged sequentially along the same axis. The right leaf (1) is sleeved and fixed to the drive sleeve (6), the left leaf (2) is sleeved and fixed to the lower sleeve (5), the drive sleeve (6) is rotatably sleeved to the upper sleeve (7), and the upper sleeve (7) is rotatably sleeved to the drive shaft (4). A spring (11) is installed inside the lower sleeve (5). One end of the spring (11) abuts against one end of the lower sleeve (5). The other end of the lower sleeve (5) is connected to one end of the upper sleeve (7). The other end of the upper sleeve (7) is sleeved on the damper (3). The inner wall of the lower sleeve (5) is provided with circumferentially distributed keyways (12). One end of the transmission shaft (4) is provided with key teeth (13). The key teeth (13) are slidably installed in the keyways (12). The other end of the spring (11) abuts against the keyways (12). The other end of the transmission shaft (4) abuts against the damper (3). The transmission shaft (4) can be driven to move axially by the relative rotation of the transmission sleeve (6) and the upper sleeve (7). The axial movement of the transmission shaft (4) can drive the relative rotation of the transmission sleeve (6) and the upper sleeve (7).

2. The hinge with buffer closure according to claim 1, characterized in that, The upper sleeve (7) is provided with a longitudinal groove (14) that runs through the radial direction, and the transmission sleeve (6) is provided with two spiral grooves (15). The other end of the transmission shaft (4) passes through the longitudinal groove (14) and the spiral groove (15) in sequence through the two ends of the transmission pin (16).

3. The hinge with buffer closure according to claim 1, characterized in that, The other end of the upper sleeve (7) is closed by the upper cover (17), which abuts against the damper (3) by the adjusting screw (18), and the screw head of the adjusting screw (18) protrudes from the operating port of the upper cover (17).

4. The hinge with buffer closure according to claim 1, characterized in that, One end of the lower sleeve (5) is closed by the lower cover (19), and the lower cover (19) is abutted against one end of the spring (11) by the pressure adjusting screw (20). The screw head of the pressure adjusting screw (20) protrudes from the operating port of the lower cover (19).

5. The hinge with buffer mechanism according to claim 1, characterized in that, The right leaf (1) has a rotating part (8), which is respectively sleeved on the lower sleeve (5), the transmission sleeve (6), and the upper sleeve (7). The right leaf (1) is fixed to the transmission sleeve (6) by a key connection (9). The left leaf (2) has two rotating parts (8), one of which is sleeved on the upper sleeve (7), and the other rotating part (8) is sleeved on and fixed to the lower sleeve (5) by a key connection (9).

6. The hinge with buffer hinge according to claim 5, characterized in that, The two ends of the rotating part (8) of the right leaf (1) are respectively axially abutted against the rotating part (8) of the left leaf (2) by a plane bearing (10).

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