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CN-224219775-U - Damping rotary joint for seat and seat

CN224219775UCN 224219775 UCN224219775 UCN 224219775UCN-224219775-U

Abstract

The utility model discloses a damping rotary joint for a seat and the seat, which comprises a supporting seat and a rotary seat rotationally connected to the supporting seat through a rotating shaft, wherein a disc spring is arranged at the rotary connection part of the rotary seat and the supporting seat, the seat is provided with a pretightening force, compared with the rubber pad material, the disc spring has longer service life and higher structural strength, and can enable the rotating seat to have better damping sense when rotating, and the disc spring is arranged on the seat, so that the seat use experience sense can be effectively promoted.

Inventors

  • YUAN SHIDONG
  • He Zhengtang
  • HUANG YUXIAN
  • HE FEI
  • ZHENG JIE

Assignees

  • 永艺家具股份有限公司

Dates

Publication Date
20260512
Application Date
20250612

Claims (12)

  1. 1. A damping rotary joint for a seat is characterized by comprising a supporting seat (1) and a rotary seat (2) rotatably connected to the supporting seat (1) through a rotating shaft, wherein a disc spring (41) is arranged at the rotary connection part of the rotary seat (2) and the supporting seat (1), and the disc spring (41) elastically deforms under the extrusion of external force in the axial direction of the rotating shaft and applies rotary friction resistance between the rotary seat (2) and the supporting seat (1).
  2. 2. A damped pivot joint for a seat according to claim 1, wherein the number of disc springs (41) is single.
  3. 3. A damped pivot joint for a seat according to claim 1, wherein the number of disc springs (41) is plural.
  4. 4. A damped pivot joint for a seat according to claim 3, wherein each two adjacent disc springs (41) of the plurality of disc springs (41) are arranged in a reversible alternating manner or each two adjacent disc springs (41) are arranged in the same direction.
  5. 5. A damped pivot joint for a seat according to claim 3, wherein the plurality of disc springs (41) are divided into a plurality of disc spring groups, each disc spring group comprising a plurality of disc springs arranged in the same direction, each two adjacent disc spring groups being arranged in a reversible alternating manner.
  6. 6. A damping rotary joint for a seat according to claim 1 is characterized in that a screw (4) is arranged at the rotary joint of a rotary seat (2) and a supporting seat (1) in a penetrating manner, the screw (4) comprises a rod body with a threaded section and a cap body positioned at one end of the rod body, the rod body is a rotary shaft between the rotary seat (2) and the supporting seat (1), the disc spring (41) is sleeved on the rod body, rotary shaft holes are simultaneously formed in the rotary seat (2) and the supporting seat (1), a threaded section is arranged in the rotary shaft holes, and the threaded section of the rod body is in threaded fit with the threaded section, so that the cap body directly or indirectly extrudes the disc spring (41) to elastically deform.
  7. 7. A damped rotary joint for a seat according to claim 6, wherein the disc spring (41) is arranged between the cap and the rotary seat (2), or the disc spring (41) is arranged between the cap and the support seat (1), or the disc spring (41) is arranged between the support seat (1) and the rotary seat (2).
  8. 8. A damping rotary joint for a seat according to claim 6, wherein a nut (42) is embedded in the rotary shaft hole, the threaded section is an internal threaded section of the nut (42), or the screw (4) comprises an internal threaded screw and an external threaded screw which are butted with each other, a rod body of the internal threaded screw is a sleeve with an internal threaded section, a rod body of the external threaded screw is a screw with an external threaded section, and the internal threaded section and the external threaded section are mutually the threaded sections.
  9. 9. The damping rotary joint for a seat according to claim 1, wherein the rotary seat (2) or the supporting seat (1) is provided with a groove extending along the axial direction of the rotating shaft, and the disc spring (41) is arranged in the groove.
  10. 10. A chair comprising a chair back and the damped pivot joint of claim 1 disposed on the chair back.
  11. 11. A seat as claimed in claim 10, further comprising a lumbar support, wherein the support (1) is adapted to be coupled directly or indirectly to the back of the seat, and wherein the swivel (2) is adapted to be coupled directly or indirectly to the lumbar support.
  12. 12. A seat as claimed in claim 10, further comprising a headrest (7), wherein the support (1) is adapted to be coupled directly or indirectly to the seat back, and wherein the swivel (2) is adapted to be coupled directly or indirectly to the headrest (7).

Description

Damping rotary joint for seat and seat Technical Field The utility model relates to the field of seats, in particular to a damping rotary joint for a seat and the seat. Background The headrest or the lumbar support which can rotate and adjust the supporting position can be installed on the chair back of a common office chair, the headrest is taken as an example, the upper end of the chair back can be provided with a supporting seat, the rear end of the headrest can be provided with a connecting seat, the connecting seat is usually rotationally connected to the position of the supporting seat, in order to ensure the supporting stability of the headrest, a damping piece can be arranged between the connecting seat and the supporting seat, and can apply pre-tightening resistance between the connecting seat and the supporting seat, so that the headrest can rotate with resistance, and after the headrest is adjusted in place, the headrest can be stopped at the corresponding supporting position due to the existence of the pre-tightening resistance, and the stability of the headrest is ensured. The conventional damping piece is usually a rubber cushion made of a silica gel material, the cost of the rubber cushion is low, the elasticity is good, elastic deformation can be generated after stress so as to apply the pretightening resistance between the connecting seat and the supporting seat, but the rubber cushion is made of silica gel, the pretightening resistance generated by the rubber cushion is limited, the rubber cushion is easy to age after the headrest rotates for many times, the service life of the rubber cushion can not meet the requirements, and the use experience of the seat is affected. Disclosure of Invention The utility model provides a damping rotary joint for a seat and the seat, wherein a disc spring is arranged at a rotary joint of a rotary seat and a supporting seat to apply a pretightening force to the rotary seat. The technical scheme of the utility model is realized as follows: A damping rotary joint for a seat comprises a supporting seat and a rotary seat rotationally connected to the supporting seat through a rotary shaft, wherein a disc spring is arranged at the rotary connection position of the rotary seat and the supporting seat, and elastically deforms under the extrusion of external force in the axial direction of the rotary shaft and applies rotary friction resistance between the rotary seat and the supporting seat. Preferably, the number of disc springs is single. Preferably, the number of the disc springs is a plurality of the disc springs, and the plurality of the disc springs can provide enough pretightening force to generate enough damping sense when the rotating seat rotates. Preferably, among the plurality of disc springs, every two adjacent disc springs are arranged in a positive and negative alternate manner, or every two adjacent disc springs are arranged in the same direction. Preferably, the plurality of disc springs may be divided into a plurality of disc spring groups, each of the disc spring groups including a plurality of disc springs arranged in the same direction, and every two adjacent disc spring groups are arranged in a positive and negative alternating manner. Preferably, the rotating connection part of the rotating seat and the supporting seat is penetrated with a screw, the screw comprises a rod body with a threaded section and a cap body positioned at one end of the rod body, the rod body is a rotating shaft between the rotating seat and the supporting seat, the disc spring is sleeved on the rod body, the rotating seat and the supporting seat are simultaneously provided with rotating shaft holes, the rotating shaft holes are internally provided with threaded sections, the threaded sections of the rod body are in threaded fit with the threaded sections so that the cap body directly or indirectly extrudes the disc spring to elastically deform, and the screw is not only a rotating supporting shaft between the rotating seat and the supporting seat, but also a driving piece for promoting the disc spring to elastically deform. Preferably, the disc spring is arranged between the cap body and the rotating seat, or the disc spring is arranged between the cap body and the supporting seat, or the disc spring is arranged between the supporting seat and the rotating seat. Preferably, the rotating shaft hole is internally embedded with a nut, the threaded section is an internal threaded section of the nut, or the screw comprises an internal threaded screw and an external threaded screw which are mutually butted, a rod body of the internal threaded screw is a sleeve with the internal threaded section, a rod body of the external threaded screw is a screw with the external threaded section, and the internal threaded section and the external threaded section are mutually threaded sections. Preferably, the rotating seat or the supporting seat is provided with a groove extending alon