[Object] The object is to allow a tire valve to be securely fixed to a tire wheel.[Solution] A valve stem 10, to be mounted to a valve mounting hole 81H of a tire wheel 81, includes a stem body 20 that is pipe-shaped, contains a valve core 11 inside, and has a proximal end to which an electrical circuit unit 90 is fixed, and a cover member 40 made of elastomer and covering an outer side of the stem body. The valve stem 10 includes an engagement groove 41 formed on an outer circumferential surface of a proximal end of the cover member 40 to engage with an opening edge of the valve mounting hole 81H, and a weight adjustment member 50 having a higher specific gravity than the cover member 40 and made of a material different from that of the stem body 20. The weight adjustment member is embedded in the cover member 40 and positioned closer to a distal end of the cover member than the engagement groove 41.
VALVE STEM AND TIRE VALVE
VENTILSCHAFT UND REIFENVENTIL
CORPS DE VALVE ET VALVE DE PNEU
2022-11-16
Patent
Elektronische Ressource
Englisch