The manual headrest folding mechanism comprises a support and a rotating shaft transverse rod, the lower portion of the support is arranged on the rotating shaft transverse rod in a sleeving mode, and the support can rotate around the rotating shaft transverse rod; a rotating shaft cross rod is fixed on the support, a locking piece is fixedly sleeved on the rotating shaft cross rod, a reset torsion spring is sleeved on the rotating shaft cross rod, a middle cross rod parallel to the rotating shaft cross rod is fixed in the middle of the support, a locking torsion spring, a locking ratchet wheel, an unlocking ratchet wheel and an unlocking torsion spring are sequentially sleeved on the middle cross rod, and the locking ratchet wheel and the unlocking ratchet wheel are arranged side by side in a linkage mode. An unlocking pull piece is arranged on the locking ratchet wheel or the unlocking ratchet wheel, during locking, the side walls of the locking ratchet wheel and the locking ratchet wheel abut against the side wall of the locking piece, during unlocking, the unlocking pull piece is pulled, the side walls of the locking ratchet wheel and the locking ratchet wheel are disengaged from the side wall of the locking piece, and the locking ratchet wheel and the locking ratchet wheel are separated from the side wall of the locking piece. The locking ratchet wheel and the locking piece are used for achieving double-locking-piece locking on the headrest mechanism, the dynamic collision safety performance is better, and meanwhile the headrest mechanism can be matched with different unlocking modes.
本发明公开了一种头枕手动折叠机构,包括支架和转轴横杆,所述支架下部套装在所述转轴横杆上,且能够绕所述转轴横杆转动;在所述转轴横杆上固套有锁止件,所述转轴横杆上套设有复位扭簧,在所述支架的中部固定有与所述转轴横杆平行的中部横杆,在该中部横杆上依次套装有锁止扭簧、锁止棘轮、解锁棘轮和解锁扭簧,所述锁止棘轮和解锁棘轮联动并排设置,在所述锁止棘轮或解锁棘轮上设置有解锁拉件,锁止时,所述锁止棘轮和锁止棘轮的侧壁均抵在所述锁止件侧壁上,解锁时,拉动解锁拉件,所述锁止棘轮和锁止棘轮的侧壁与锁止件侧壁脱开,利用锁止棘轮和锁止件对头枕机构实现双锁片锁止,具备更优良的动态碰撞安全性能,同时能够适配不同的解锁形式。
Manual folding mechanism for headrest
头枕手动折叠机构
2025-02-25
Patent
Electronic Resource
Chinese
IPC: | B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet |