Tire valve
A tire valve is provided, wherein the tire valve includes: a tubular member including an inner surface, an internal channel and an enlarged section, the internal channel being defined by the inner surface and extending through the enlarged section; and a valve assembly including a sealing portion, movably inserted in the internal channel, and being operable to drive the sealing portion to engage with the inner surface to block the internal channel or disengage from the inner surface to unblock the internal channel; wherein when the tubular member is disposed through a rim, the enlarged section is inserted in an internal room of the rim, and a position where the sealing portion engages with the inner surface is located in the internal room of the rim.
1 . A tire valve including:
a tubular member including an inner surface, an internal channel and an enlarged section, the internal channel being defined by the inner surface and extending through the enlarged section; and
a valve assembly including a sealing portion, movably inserted in the internal channel, and being operable to drive the sealing portion to engage with the inner surface to block the internal channel or disengage from the inner surface to unblock the internal channel;
wherein when the tubular member is disposed through a rim, the enlarged section is inserted in an internal room of the rim, and a position where the sealing portion engages with the inner surface is located in the internal room of the rim;
wherein an end cap is detachably connected to an end of the tubular member, and the end cap includes at least one through hole in communication with the internal channel.
2 . The tire valve of claim 1 , wherein the tubular member further includes an upper section and a lower section, and when the tubular member is disposed through the rim, the upper section extends out of the rim for connection to an inflating device, and the lower section includes the enlarged section and an air outlet.
3 . The tire valve of claim 1 , further including an elastic member, wherein the elastic member is disposed between the valve assembly and the end cap.
4 . The tire valve of claim 3 , wherein the elastic member is a coil spring, the valve assembly further includes a shaft member, the end cap includes a projection, and the elastic member is sleeved on the shaft member and the projection.
5 . The tire valve of claim 4 , wherein in an axial direction of the tubular member, the shaft member has a length not less than a length of the enlarged section.
6 . The tire valve of claim 1 , wherein the valve assembly includes a valve pin, the valve pin includes an axial hole and at least one lateral hole in communication with the axial hole, and the at least one lateral hole is in communication with the internal channel.
7 . The tire valve of claim 6 , wherein the tubular member further includes a first shoulder on the inner surface, the valve pin further includes a second shoulder, and the valve pin is movable so that the second shoulder is blocked by the first shoulder.
8 . The tire valve of claim 7 , wherein when the second shoulder is blocked by the first shoulder, the sealing portion engages with the inner surface to block the internal channel.
9 . The tire valve of claim 8 , further including a valve stem seal, wherein the valve stem seal is sleeved on an end portion of the tubular member; the valve assembly further includes a valve pin seal sleeved on the valve pin, and the valve pin seal is operable to engage with the inner surface to block the internal channel; the valve pin extends out beyond the tubular member; a fastener is screwed onto the tubular member; a rim seal is sleeved on the tubular member and located between the enlarged section and the fastener, the fastener is configured to tighten the tubular member and force the rim seal tightly against an outer surface of the rim.