Rotary pushing power-assisted damping hinge

Abstract

The utility model discloses a rotary pushing power-assisted damping hinge which comprises a rotating shaft, a shell and a damping mechanism, the rotating shaft is rotatably connected with one end of the shell, one end of the rotating shaft extends out of the shell, the other end of the rotating shaft is located in the shell and provided with a first inclined block, and the damping mechanism comprises a damping shell, a piston and a piston rod. A second inclined block is arranged at one end of the damping shell, a spring sleeves the damping shell, damping oil is filled in the damping shell, one end of the piston rod is fixed at one end of the shell, the other end of the piston rod extends into the damping shell, the piston is fixed at the other end of the piston rod, a clamping groove is formed in the surface of the piston, and a sealing ring sleeves the surface of the clamping groove. A through hole is formed in the side, close to the rotating shaft, of the piston and communicates with the clamping groove, and a gap exists between the surface of the piston and the damping shell. The utility model provides a rotary push assisting damping hinge, which can increase the rotary push assisting force during opening while improving the damping force during closing, so as to realize two modes of damping and assisting force.

Description

Technical Field

[0001] This utility model relates to the field of damping hinge technology, and in particular to a rotary push-assisted damping hinge. Background Technology

[0002] In the structural design of flip-top devices (such as electronic products and furniture), the connection between the cover and the main body typically relies on damping hinges to achieve smooth opening and closing. As the functional requirements of these devices increase, the size and weight of the cover also tend to rise, leading to a significant increase in the damping force required during the closing process. To ensure a buffering effect when the cover closes, the damping hinge needs to provide resistance matching the cover's own weight. This means that users must apply a large external force to overcome the initial damping torque when opening the cover. Furthermore, existing flip-top mechanisms generally lack resistance adjustment or auxiliary structures for the opening action, resulting in a cumbersome operating experience and a high risk of fatigue.

[0003] Balancing the conflict between the need for cushioning when closing the cover and the need for effortless opening has become a key technical challenge in improving user experience. Utility Model Content

[0004] The purpose of this invention is to provide a rotary-push-assisted damping hinge that increases the damping force when closed and increases the rotary-push assistance when opening, thus achieving the coexistence of damping and assistance.

[0005] The technical solution adopted by the rotary push-assisted damping hinge disclosed in this utility model is:

[0006] A rotary-push-assisted damping hinge includes a rotating shaft, a housing, and a damping mechanism. The rotating shaft is rotatably connected to one end of the housing, with one end extending out of the housing and the other end located inside the housing and having a first inclined block. The damping mechanism includes a damping housing, a piston, and a piston rod. The damping housing is slidably connected to the inner wall of the housing, and one end of the damping housing has a second inclined block. The first and second inclined blocks are in contact and adapted to each other. A spring is sleeved on the outside of the damping housing, and the spring pushes the damping housing to move toward the rotating shaft. One side of the damping housing is sealed by a damping end cap, and the inside of the damping housing is filled with damping oil. One end of the piston rod is fixed to the end of the housing away from the rotating shaft, and the other end of the piston rod extends into the damping housing. The piston is fixed to the other end of the piston rod, and a groove is provided on the surface of the piston. A sealing ring is sleeved on the surface of the groove. A through hole is provided on the side of the piston near the rotating shaft, and the through hole communicates with the groove. There is a gap between the surface of the piston away from the through hole and the damping housing.

[0007] As a preferred embodiment, the damping housing is provided with a sound-absorbing sponge, which is fixed to the damping end cap by a retainer.

[0008] As a preferred embodiment, the damping end cap is provided with a Y-ring, which is fitted onto the surface of the piston rod and is used to prevent damping oil leakage.

[0009] As a preferred embodiment, the outer casing has a sliding groove inside, and the surface of the damping casing has a raised ridge, which is slidably disposed in the sliding groove.

[0010] As a preferred embodiment, the housing includes a tail end cover, which is disposed on the side of the housing away from the rotating shaft. The tail end cover is sealed to the housing, and a baffle is provided between the tail end cover and the housing. One end of the piston rod is fixedly connected to the baffle.

[0011] As a preferred embodiment, the spring is provided with washers at both ends.

[0012] As a preferred embodiment, the rotating shaft extends out of one end of the outer shell in a flattened structure, and the surface of the outer shell is also in a flattened structure.

[0013] The beneficial effect of the rotary push-assisted damping hinge disclosed in this utility model is that when the outer cover plate is in the closed position, the spring of the assist hinge is in the compressed position, but because the weight of the cover plate is greater than the elastic force of the hinge, the cover plate will not automatically lift up and remain in the closed position.

[0014] When an external torque is applied to rotate the cover in the lifting direction, the spring's restoring force pushes the damping housing along the outer shell towards the shaft side. The second ramp of the damper pushes the first ramp of the shaft forward. At this time, the shaft is subjected to both axial and circumferential forces. However, because the axial movement space of the shaft is restricted by the end face of the outer shell, circumferential movement is possible, so the shaft rotates, and the cover is lifted until it is fully opened. During this process, the spring force bears part of the weight of the cover, providing assistance and improving the user experience. The opening process is not as strenuous. Furthermore, the external load forces the shaft to reverse, and the component force of the shaft acting on the second ramp forces the damping housing to move along the first ramp surface. The pressure forces the sealing ring to move towards the side of the slot closer to the shaft, creating a channel that connects the through hole on the piston side, the slot, and the gap between the piston and the damping housing. The damping oil flows rapidly through this channel, generating a very small damping force. Therefore, during the opening process, the opening can be better assisted by the spring.

[0015] During the closing process, the rotating shaft drives the first inclined block to press against the second inclined block, forcing the damping housing to compress the spring axially and push the piston away from the rotating shaft. During the movement, the end face of the piston on one side is compressed in the cavity between it and the inside of the damping housing, thereby generating a reaction force that pushes the sealing ring against the side of the piston with a gap, forcing the sealing ring to fit against the piston end face. The gap is eliminated, and the grease cannot pass through the end face. At this time, the damping oil in the cavity can only flow through the installation gap between the piston and the piston rod. This gap is only a very small flow space, generating a large pressure during the process. This prevents the tendency of the damper housing and piston to move, slowing down the downward speed of the cover plate. In addition, during this process, the spring is compressed, generating a reaction force, so that the rotation of the rotating shaft is subject to the damping force of both the piston and the spring, giving the hinge a large damping force when it closes, thus providing a buffer.

[0016] The above structure enables automatic switching, allowing the functions of closed damping and open assist to coexist. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rotary push-assisted damping hinge according to this utility model.

[0018] Figure 2 This is a cross-sectional view of a rotary push-assisted damping hinge according to this utility model.

[0019] Figure 3 This is an exploded view of a rotary push-assisted damping hinge according to this utility model.

[0020] Figure 4 This is a schematic diagram of the rotating shaft and damping housing structure of a rotary push-assisted damping hinge according to this utility model.

[0021] Figure 5 This is a schematic diagram of the piston structure of a rotary push-assisted damping hinge according to this utility model.

[0022] Figure 6 This is a schematic diagram of the damping oil flow in the open state of a rotary push-assisted damping hinge according to this utility model.

[0023] Figure 7 This is a schematic diagram of the damping oil flow in the closed state of a rotary push-assisted damping hinge according to this utility model. Detailed Implementation

[0024] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0025] Please refer to Figures 1 to 5A rotary-push-assisted damping hinge includes a rotating shaft 10, a housing 20, and a damping mechanism. The rotating shaft 10 is rotatably connected to one end of the housing 20, and one end of the rotating shaft 10 extends out of the housing 20. The other end of the rotating shaft 10 is located inside the housing 20 and is provided with a first inclined block 11. The damping mechanism includes a damping housing 31, a piston 32, and a piston rod 33. The damping housing 31 is slidably connected to the inner wall of the housing 20. One end of the damping housing 31 is provided with a second inclined block 311. The first inclined block 11 and the second inclined block 311 are in contact and adapted to each other.

[0026] A spring 34 is fitted on the outside of the damping housing 31. One side of the damping housing 31 is sealed by a damping end cap 35. The spring 34 pushes the damping housing 31 to move toward the rotating shaft 10. The inside of the damping housing 31 is filled with damping oil. One end of the piston rod 33 is fixed to the end of the outer shell 20 away from the rotating shaft 10, and the other end of the piston rod 33 extends into the inside of the damping housing 31. The piston 32 is fixed to the other end of the piston rod 33. The surface of the piston 32 is provided with a groove 321. A sealing ring 36 is fitted on the surface of the groove 321. The side of the piston 32 near the rotating shaft 10 is provided with a through hole 322. The through hole 322 communicates with the groove 321. There is a gap between the surface of the piston 32 away from the through hole 322 and the damping housing 31.

[0027] In this embodiment, the interior of the damping housing 31 is divided into cavity A and cavity B by piston 32. The through hole 322 on piston 32 is located in cavity B, while the gap between piston 32 and damping housing 31 is located in cavity A. Damping oil can flow between cavity A and cavity B.

[0028] When the outer cover is in the closed position, the spring 34 of the assist hinge is in the compressed position. However, because the weight of the cover is greater than the elastic force of the hinge, the cover will not automatically lift up and remain in the closed position.

[0029] When an external torque is applied to rotate the cover in the lifting direction, the restoring force of the spring 34 pushes the damping housing 31 to move along the outer shell 20 toward the rotating shaft 10. The second ramp of the damper pushes the first ramp of the rotating shaft 10 forward. At this time, the rotating shaft 10 is subjected to two components of force, axial and circumferential. However, because the axial movement space of the rotating shaft 10 is restricted by the end face of the outer shell 20, it can move in the circumferential direction. Therefore, the rotating shaft 10 rotates, and the cover is lifted until it is fully opened. During this process, the elastic force of the spring 34 bears part of the weight of the cover, which helps to improve the user experience and makes the opening and closing process less strenuous.

[0030] Please refer to Figure 6Furthermore, the external load forces the rotating shaft 10 to reverse, and the component force of the rotating shaft 10 acting on the second slope forces the damping housing 20 to move along the first slope surface. The pressure forces the sealing ring 36 to move towards the side of the slot 321 closer to the rotating shaft 10, that is, the sealing ring 36 moves towards the B cavity side, so that the through hole 322 on the piston 32 side, the slot 321 and the gap between the piston 32 and the damping housing 31 are connected. The damping oil flows quickly from the B cavity to the A cavity through this channel, and the damping force generated is very small. Therefore, during the opening process, it can be better assisted to open under the action of the spring 34.

[0031] Please refer to Figure 7 During the closing process, the rotating shaft 10 drives the first inclined block 11 to squeeze the second inclined block 311, forcing the damping housing 31 to compress the spring 34 axially and push the piston 32 to move away from the rotating shaft 10. During movement, the end face of piston 32 on one side is compressed into the cavity inside damping housing 31. This causes the damping oil to generate a reaction force, pushing the sealing ring 36 towards the side of piston 32 with a gap, i.e., squeezing the sealing ring 36 towards cavity A. This forces the sealing ring 36 to adhere to the end face of piston 32, eliminating the gap and preventing grease from passing through the end face. At this time, the damping oil in the cavity can only flow through the installation gap between piston 32 and piston rod 33. This gap is only a very small flow space, generating a large pressure during the process. This prevents the tendency of the damper housing 20 and piston 32 to move, slowing down the downward speed of the cover plate. During this process, spring 34 is compressed, generating a reaction force. This causes the rotation of shaft 10 to be subject to the damping force of both piston 32 and spring 34, giving the hinge a large damping force when closed, thus providing a buffer. That is, the weight of the cover plate is equal to or greater than the elastic force of spring 34 plus the damping force. The movement effect is that the cover plate slowly descends until it stops at the closed position.

[0032] The above structure enables automatic switching, allowing for the coexistence of closed damping and open assist functions.

[0033] In the above scheme, the damping housing 31 is provided with a sound-absorbing sponge 37. The sound-absorbing sponge 37 is fixed to the damping end cap 35 by the retainer 38. When the damping oil is squeezed to the damping end cap 35 under pressure, it hits the sound-absorbing sponge 37, and the sound-absorbing sponge 37 absorbs vibration and noise.

[0034] The damping end cap 35 is provided with a Y-ring 39, which is fitted onto the surface of the piston rod 33. The Y-ring 39 is used to prevent damping oil from leaking out, so that when the damping housing 31 slides along the piston rod 33, it achieves a sliding seal effect.

[0035] The outer casing 20 has a sliding groove inside, and the damping housing 31 has a protruding ridge 312 on its surface. The protruding ridge 312 is slidably disposed in the sliding groove, thereby restricting the rotation between the outer casing 20 and the damping housing 31, while ensuring that the damping housing 31 and the outer casing 20 can slide smoothly.

[0036] The outer casing 20 includes a tail end cover 12, which is located on the side of the outer casing 20 away from the rotating shaft 10. The tail end cover 12 is sealed to the outer casing 20, and a baffle 13 is provided between the tail end cover 12 and the casing. One end of the piston rod 33 is fixedly connected to the baffle 13. The piston rod 33 is fixed by the baffle 13, so that the piston rod 33 is fixed on the outer casing 20. The damping housing 31 can move in a way that cooperates with the piston 32 inside the damping housing 31 to squeeze the damping oil.

[0037] The spring 34 has washers 341 at both ends. The washers 341 allow the two ends of the spring 34 to contact the damping housing 31 and the inner wall of the outer casing 20 respectively, thereby reducing friction.

[0038] The rotating shaft 10 extends out of the outer shell 20 at one end in a flat structure, and the surface of the outer shell 20 is also flat, so that the rotating shaft 10 and the outer shell 20 are respectively fixed to the corresponding components, so as to prevent the rotating shaft 10 or the shell from rotating relative to the components, thus playing a limiting role.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A rotary push-assisted damping hinge, characterized in that, The device includes a rotating shaft, a housing, and a damping mechanism. The rotating shaft is rotatably connected to one end of the housing, with one end extending out of the housing and the other end located inside the housing and equipped with a first inclined block. The damping mechanism includes a damping housing, a piston, and a piston rod. The damping housing is slidably connected to the inner wall of the housing, and one end of the damping housing is equipped with a second inclined block. The first and second inclined blocks are in contact and adapted to each other. A spring is fitted around the outside of the damping housing, and the spring pushes the damping housing to move toward the rotating shaft. One side of the damping housing is sealed by a damping end cap, and the inside of the damping housing is filled with damping oil. One end of the piston rod is fixed to the end of the housing away from the rotating shaft, and the other end of the piston rod extends into the damping housing. The piston is fixed to the other end of the piston rod, and a groove is provided on the surface of the piston. A sealing ring is fitted onto the surface of the groove. A through hole is provided on the side of the piston near the rotating shaft, and the through hole communicates with the groove. There is a gap between the surface of the piston away from the through hole and the damping housing.

2. The rotary push-assisted damping hinge as described in claim 1, characterized in that, The damping housing is equipped with a sound-absorbing sponge, which is fixed to the damping end cap by a retainer.

3. The rotary push-assisted damping hinge as described in claim 2, characterized in that, The damping end cap is provided with a Y-ring, which is fitted onto the surface of the piston rod and is used to prevent damping oil from leaking out.

4. The rotary push-assisted damping hinge as described in claim 1, characterized in that, The outer casing has a sliding groove inside, and the surface of the damping casing has a raised ridge, which is slidably disposed in the sliding groove.

5. A rotary-push-assisted damping hinge as described in claim 1, characterized in that, The housing includes a tail end cover, which is located on the side of the housing away from the rotating shaft. The tail end cover is sealed to the housing, and a baffle is provided between the tail end cover and the housing. One end of the piston rod is fixedly connected to the baffle.

6. The rotary push-assisted damping hinge as described in claim 1, characterized in that, The spring has washers at both ends.

7. The rotary push-assisted damping hinge as described in claim 1, characterized in that, The rotating shaft extends out of one end of the outer shell in a flat structure, and the surface of the outer shell is also in a flat structure.

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