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CN-224228451-U - Damping hinge

CN224228451UCN 224228451 UCN224228451 UCN 224228451UCN-224228451-U

Abstract

The utility model discloses a damping hinge which comprises a cam rotating shaft, a damping elastic assembly, a hinge mounting seat and a damping assembly, wherein the cam rotating shaft is provided with an arc-shaped profile surface, the damping elastic assembly comprises an elastic element and a driven element, one end of the driven element is abutted against the elastic element, the other end of the driven element is in sliding contact with the arc-shaped profile surface, the hinge mounting seat is provided with a buffering cavity and an oil liquid channel, the buffering cavity is used for guiding the damping elastic assembly to move along a straight line, and the oil liquid channel is used for conveying oil liquid to perform shock absorption. According to the utility model, the arc profile surface is arranged on the surface of the cam rotating shaft, and the driven element matched with the arc profile surface is arranged in the damping elastic component, so that the rotation motion of the cam rotating shaft can be converted into the linear displacement of the damping elastic component, the elastic component and oil are utilized for buffering and damping, the impact force generated when an instrument moves is damped, the mute closing and hovering are realized, the safety of the instrument is protected, meanwhile, the volume of the damping hinge is obviously reduced through a compact structure, and the space adaptability of the damping hinge in different application scenes is improved.

Inventors

  • ZOU ZHONG

Assignees

  • 惠州智研液动科技有限公司

Dates

Publication Date
20260512
Application Date
20250603

Claims (10)

  1. 1. A damped hinge, comprising: The cam rotating shaft (10) is of a non-circular structure in cross section, the surface of the cam rotating shaft is provided with a continuously undulating arc-shaped profile surface (11), and the radial height of the arc-shaped profile surface (11) is periodically changed along the circumferential direction; A damping elastic assembly (20) comprising an elastic element (21) and a driven element (22), wherein one end of the driven element (22) is abutted against the elastic element (21), and the other end of the driven element is in sliding contact with the arc-shaped profile surface (11); The hinge mounting seat (30) is of a hollow shell structure, a buffer cavity (31) and an oil liquid channel (32) are arranged in the hinge mounting seat, the buffer cavity (31) is used for guiding the damping elastic assembly (20) to reciprocate along the linear direction, and the oil liquid channel (32) is used for conveying oil liquid to absorb shock; the damping elastic assembly (20) is arranged in the buffer cavity (31), one end of the cam rotating shaft (10) is exposed out of the hinge mounting seat (30), and the other end of the cam rotating shaft extends into the hinge mounting seat (30) to be in sliding contact with the driven element (22) through the arc-shaped profile surface (11).
  2. 2. Damping hinge according to claim 1, characterized in that a shaft mounting cavity (33) for mounting the cam shaft (10) is arranged in the hinge mounting seat (30), and the shaft mounting cavity (33) and the buffer cavity (31) are communicated and transmit oil through an oil channel (32).
  3. 3. Damping hinge according to claim 2, characterized in that the driven element (22) is located at one end in the buffer chamber (31) and at the other end through the oil channel (32) into the spindle mounting chamber (33) and in sliding contact with the curved profile surface (11); The driven element (22) is provided with a sliding ball (23) or a sliding roller below one end of the oil liquid channel (32).
  4. 4. Damping hinge according to claim 1, characterized in that the end of the driven element (22) in sliding contact with the curved profile (11) is provided with a protruding rounded head (221).
  5. 5. Damping hinge according to claim 1, characterized in that an inner flow channel (222) communicating with the oil flow channel (32) is provided in the driven element (22), the inner flow channel (222) comprising a first flow section close to the elastic element (21) and a second flow section close to the cam shaft (10), the diameter of the first flow section being larger than the diameter of the second flow section; An adjusting steel ball (223) is arranged in the first flow section, and the diameter of the adjusting steel ball (223) is smaller than that of the first flow section and larger than that of the second flow section.
  6. 6. Damping hinge according to claim 1, characterized in that the end of the damping cavity (31) remote from the cam shaft (10) is provided with a detachable locking member (24).
  7. 7. A damped hinge according to claim 3, wherein the follower element (22) has a smaller diameter at the end located in the oil passage (32) than at the end located in the damping chamber (31); And a limiting part (34) for limiting the maximum stroke position of the driven element (22) is arranged at the joint of the buffer cavity (31) and the oil liquid channel (32).
  8. 8. Damping hinge according to claim 2, characterized in that the end of the cam shaft (10) close to the outlet of the shaft mounting cavity (33) is circumferentially provided with a sealing ring (12).
  9. 9. Damping hinge according to claim 2, characterized in that the shaft mounting cavity (33) is provided with a bearing mounting groove, and the cam shaft (10) is rotatably arranged on the bearing mounting groove by means of a corresponding bearing (13).
  10. 10. The damped hinge of claim 1, further comprising a mounting housing (40) covering said hinge mount (30).

Description

Damping hinge Technical Field The utility model relates to the technical field of hinges, in particular to a damping hinge. Background The damping hinge is used as a key transmission part in modern industry and household equipment, becomes an indispensable part in the industry category, and has the core function of realizing mute closing and hovering by buffering impact force generated when an instrument moves, thereby playing a key role in the safety of the operation of the industry and the instrument. However, the existing damping hinge has defects that the damping capacity is limited due to insufficient precision, the appearance is influenced due to huge size, and the use scope of the damping hinge is limited. Disclosure of utility model The embodiment of the utility model provides a damping hinge, which aims to overcome the problems in the related art. The present utility model provides a damped hinge comprising: The cam rotating shaft is of a non-circular structure in cross section, the surface of the cam rotating shaft is provided with a continuously undulating arc-shaped profile surface, and the radial height of the arc-shaped profile surface is periodically changed along the circumferential direction; The damping elastic component comprises an elastic element and a driven element, one end of the driven element is abutted against the elastic element, and the other end of the driven element is in sliding contact with the arc-shaped profile surface; The hinge mounting seat is of a hollow shell structure, a buffer cavity and an oil liquid channel are arranged in the hinge mounting seat, the buffer cavity is used for guiding the damping elastic component to reciprocate along the linear direction, and the oil liquid channel is used for conveying oil liquid to perform shock absorption; The damping elastic component is arranged in the buffer cavity, one end of the cam rotating shaft is exposed out of the hinge mounting seat, and the other end of the cam rotating shaft extends into the hinge mounting seat and is in sliding contact with the driven element through the arc-shaped profile surface. As an implementation mode, a rotating shaft installation cavity for installing the cam rotating shaft is arranged in the hinge installation seat, and the rotating shaft installation cavity and the buffer cavity are communicated through an oil liquid channel and are used for transmitting oil liquid. As one implementation mode, one end of the driven element is positioned in the buffer cavity, and the other end of the driven element passes through the oil liquid channel to the inside of the rotating shaft installation cavity and is in sliding contact with the arc-shaped profile surface; The driven element is provided with sliding balls or sliding rollers below one end in the oil liquid channel. As an embodiment, an end of the driven element in sliding contact with the arc-shaped profile surface is provided with a protruding rounded head. As one embodiment, an inner flow channel communicating with the oil liquid channel is arranged in the driven element, the inner flow channel comprises a first flow section close to the elastic element and a second flow section close to the cam rotating shaft, and the diameter of the first flow section is larger than that of the second flow section; an adjusting steel ball is arranged in the first flow section, and the diameter of the adjusting steel ball is smaller than that of the first flow section and larger than that of the second flow section. As one implementation mode, one end of the buffer cavity, which is far away from the cam rotating shaft, is provided with a detachable locking piece. As one embodiment, the diameter of the driven element at the end of the oil passage is smaller than the diameter of the driven element at the end of the buffer cavity; And a limiting part for limiting the maximum stroke position of the driven element is arranged at the joint of the buffer cavity and the oil liquid channel. As one implementation mode, one end of the cam rotating shaft, which is close to the outlet of the rotating shaft mounting cavity, is provided with a sealing ring in a surrounding mode. As an implementation mode, a bearing mounting groove is formed in the rotating shaft mounting cavity, and the cam rotating shaft is rotatably arranged on the bearing mounting groove through a corresponding bearing. As an embodiment, the damping hinge further comprises a mounting housing covering the hinge mounting seat. According to the damping hinge provided by the embodiment of the utility model, the arc-shaped profile surface is arranged on the surface of the cam rotating shaft, and the driven element matched with the arc-shaped profile surface is arranged in the damping elastic component, so that the rotation motion of the cam rotating shaft can be converted into the linear displacement of the damping elastic component, the elastic component and oil are utilized for buffering and damping, the