The invention discloses a seat dining table plate rotation self-limiting mechanism which comprises a supporting arm and a rotating seat, and the supporting arm is connected with the rotating seat through a rotating shaft pin; a supporting arm insert in running fit with the rotating shaft pin is mounted on the supporting arm through a fastening screw, a middle hole is formed in the middle of the rotating seat, a middle rotating block is arranged in the middle hole, the rotating seat is in running fit with the middle rotating block, an avoiding groove is formed in the middle rotating block, and a rotating shaft is arranged in the avoiding groove. A middle hole is formed in the rotating seat, a limiting channel communicated with the middle hole is formed in the rotating seat, a limiting pin shaft, a limiting pin crosspiece connected with the limiting pin shaft in a clamped mode and a reset spring are arranged in the limiting channel, and one end of the limiting pin shaft makes contact with the supporting arm insert in an attached mode. The whole supporting arm rotates backwards to be self-limited in the recovery process, the risk that the supporting arm cannot be self-locked after being laid flat is avoided, the dining table board can be conveniently and slowly moved out and recovered, the whole structure is simple, assembling is easy, the occupied space is small, and reliability is good.
本发明公开了一种座椅餐桌板旋转自限位机构,包括支臂和旋转座,所述支臂通过转轴销与旋转座连接;所述支臂上通过紧固螺钉安装有与转轴销转动配合的支臂镶件,所述旋转座中间开设有中间孔,所述中间孔内设有中间转动块,所述旋转座与中间转动块转动配合,所述中间转动块上开设有避让槽,所述旋转座上开设有与中间孔连通的限位通道,所述限位通道内设有限位销轴、与限位销轴卡接的限位销横档以及复位弹簧,所述限位销轴一端与支臂镶件贴合接触,本发明实现支臂放平后向后方向自限位,支臂回收过程中整体后转自限位,避免了支臂放平后无法自锁的风险,方便餐桌板缓慢移出和收回,整体结构简单,装配简单,占用空间小,可靠性好。
Seat dining table plate rotation self-limiting mechanism
一种座椅餐桌板旋转自限位机构
2023-09-01
Patent
Electronic Resource
Chinese
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