HEADREST HEIGHT ADJUSTMENT MECHANISM AND CHILD SAFETY SEAT

A headrest height adjustment mechanism connected to a slider fixed to a headrest, comprising: an integral engaging member, for positioning the headrest; a connecting member, a first end of the connecting member is pivotally connected to the slider, and the second end of the connecting member is connected to the engaging member; an operating member, connected to the engaging member to operate the engaging member; and an elastic member, abutted between the connecting member and the slider. The headrest height adjustment mechanism according to the application can adjust the height of the headrest in a simpler and effective manner, and has reliable locking and low cost.