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CN-224219762-U - Automatic reset rotating shaft mechanism and chair structure

CN224219762UCN 224219762 UCN224219762 UCN 224219762UCN-224219762-U

Abstract

The utility model provides an automatic resetting rotating shaft mechanism and a chair structure, which relate to the desk and chair structure technology, and particularly discloses a fixing seat, wherein an assembly opening is formed in the side wall of the fixing seat, a rotating part is arranged in the assembly opening, part of the rotating part extends outwards after penetrating through the assembly opening, a connecting piece is arranged at the extending end of the rotating part, a resetting structure in transmission connection with the rotating part is arranged in the assembly opening, elastic deformation energy is stored through the resetting structure, the rotating part is driven to automatically return after external force is removed, efficient and stable resetting action is realized, and the bidirectional torsion spring design allows automatic resetting after forward and backward rotation, so that the automatic resetting mechanism meets the requirements of multiple scenes.

Inventors

  • FAN XUDONG
  • DU QIANG

Assignees

  • 成都汇鸿科技集团有限公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (9)

  1. 1. The utility model provides an automatic pivot mechanism resets, its characterized in that, includes fixing base (1), set up the assembly mouth on the lateral wall of fixing base (1), the built-in rotating member (10) that is equipped with of assembly mouth, the part of rotating member (10) runs through outwards extend behind the assembly mouth, install connecting piece (4) on the extension end of rotating member (10), install in the assembly mouth with the reset structure that rotating member (10) transmission is connected.
  2. 2. The automatic resetting rotating shaft mechanism according to claim 1, further comprising a first partition plate (8) installed in the assembly port, wherein the rotating member (10) is rotatably arranged on the outer side wall of the first partition plate (8), a damper (7) is installed on one side, deviating from the rotating member (10), of the first partition plate (8), and a connecting structure detachably connected with the damper (7) is installed in the rotating member (10).
  3. 3. An automatic reset spindle mechanism according to claim 2, characterized in that the connection structure comprises a bearing (9) mounted in the rotating member (10), an outer ring of the bearing (9) is connected with the rotating member (10), a transmission member (6) is mounted on an inner ring of the bearing (9), the transmission member (6) extends outwards after penetrating through the damper (7), and an opening retainer ring abutting against the damper (7) is mounted on the transmission member (6).
  4. 4. The automatic resetting rotating shaft mechanism according to claim 2, wherein a limiting plate (13) abutted to the first partition plate (8) is mounted on the outer side wall of the rotating member (10), an arc-shaped groove is formed in the limiting plate (13), a limiting screw (17) is mounted on the first partition plate (8) in a threaded connection mode, and the head of the limiting screw (17) is arranged in the arc-shaped groove.
  5. 5. The automatic reset rotating shaft mechanism according to claim 1, wherein the reset structure comprises a bidirectional torsion spring (11) arranged on the outer side wall of the rotating member (10), an adjusting plate (12) is slidably arranged on the outer side wall of the rotating member (10), a plurality of mounting holes are formed along the extending direction of the rotating member (10), mounting bolts (15) are mounted in the mounting holes, and a limiting structure for limiting the deflection of the torsion spring is arranged in the mounting holes.
  6. 6. An automatic reset spindle mechanism according to claim 5, characterized in that the limit structure comprises a stop lever (18) mounted in the assembly opening, the stop lever (18) being arranged between two extension sections of the bi-directional torsion spring (11).
  7. 7. An automatic reset spindle mechanism according to any one of claims 1-6, characterized in that a bushing (16) is mounted on the outer side wall of the rotating member (10), the outer side wall of the bushing (16) being in abutment with the inner wall of the fitting opening.
  8. 8. An automatic reset spindle mechanism according to claim 7, characterized in that a connecting sleeve (5) is mounted on the side wall of the connecting piece (4), the connecting sleeve (5) is mounted in the rotating piece (10), and the connecting sleeve (5) is detachably connected with the rotating piece (10).
  9. 9. A chair structure, characterized by comprising the automatic reset rotating shaft mechanism, a chair body (2) and a chair base (3) according to any one of claims 1-8, wherein the chair body (2) is detachably connected with the automatic reset rotating shaft mechanism, and a fixing seat (1) in the automatic reset rotating shaft mechanism is arranged in the chair base (3).

Description

Automatic reset rotating shaft mechanism and chair structure Technical Field The utility model relates to the technical field of table and chair structures, in particular to an automatic resetting rotating shaft mechanism and a chair structure. Background The swivel chair in the market can realize lifting and rotation, is simple to use and convenient to operate, and is suitable for occasions such as bars, offices, schools, families and the like. Although the chair surface of the swivel chair has the lifting function and the rotating function, the swivel chair can freely rotate for 360 degrees relative to the chair legs, so that the swivel chair is very convenient, and when a human body leaves after rotation, the chair surface still keeps in a state after rotation is completed, so that the chair with the backrest cannot automatically swivel to a set position (or called automatic centering) after returning. The existing swivel chairs are reset by adopting a swing arm mechanism, but the swing arm mechanism is reset by adopting a motor or electromagnetic drive, so that the problems of high energy consumption and complex structure are solved, the failure rate is high, part of mechanical reset mechanisms store energy through torsion springs, damping buffering is lacked, reset overshoot or shaking is easily caused by inertia, and the stability is affected. Disclosure of utility model The utility model aims to provide an automatic resetting rotating shaft mechanism which can solve the problems of the background art. The technical scheme of the utility model is realized as follows: The utility model provides an automatic resetting rotating shaft mechanism which comprises a fixed seat, wherein an assembly opening is formed in the side wall of the fixed seat, a rotating piece is arranged in the assembly opening, a part of the rotating piece extends outwards after penetrating through the assembly opening, a connecting piece is arranged at the extending end of the rotating piece, and a resetting structure in transmission connection with the rotating piece is arranged in the assembly opening. In some technical schemes of the utility model, the rotary member further comprises a first baffle plate arranged in the assembly port, the rotary member is rotatably arranged on the outer side wall of the first baffle plate, a damper is arranged on one side of the first baffle plate, which is away from the rotary member, and a connecting structure detachably connected with the damper is arranged in the rotary member. In some technical schemes of the utility model, the connecting structure comprises a bearing arranged in the rotating member, an outer ring of the bearing is connected with the rotating member, a transmission member is arranged on an inner ring of the bearing, the transmission member extends outwards after penetrating through the damper, and an opening retainer ring which is abutted with the damper is arranged on the transmission member. In some embodiments of the present utility model, a limiting plate abutting against the first partition is mounted on an outer sidewall of the rotating member. In some technical schemes of the utility model, the reset structure comprises a bidirectional torsion spring sleeved on the outer side wall of the rotating member, an adjusting plate is slidably arranged on the outer side wall of the rotating member, a plurality of mounting holes are formed along the extending direction of the rotating member, mounting bolts are mounted in the mounting holes, and a limiting structure for limiting the torsion spring to deflect is arranged in the mounting holes. In some embodiments of the present utility model, the stop structure includes a stop bar mounted in the assembly opening, the stop bar being disposed between two outer extension segments of the bi-directional torsion spring. In some embodiments of the present utility model, a bushing is mounted on an outer sidewall of the rotating member, and the outer sidewall of the bushing abuts against an inner wall of the fitting opening. In some technical schemes of the utility model, a connecting sleeve is arranged on the side wall of the connecting piece, the connecting sleeve is arranged in the rotating piece, and the connecting sleeve is detachably connected with the rotating piece. 9. A chair structure comprises an automatic resetting rotating shaft mechanism, a chair body and a chair base, wherein the chair body is detachably connected with the automatic resetting rotating shaft mechanism, and a fixing seat in the automatic resetting rotating shaft mechanism is arranged in the chair base. Compared with the prior art, the utility model has the advantages that the energy is stored through the elastic deformation of the reset structure, the rotating member is driven to automatically return after the external force is removed, the efficient and stable reset action is realized, the bidirectional torsion spring design allows the rotating member to au