Patent ID: 8342426

Claim:
A telescopic water pipe structure comprising: an internal pipe and an external pipe fit to each other, an internal plug pipe fixedly connected to a lower portion of the internal pipe to form a second internal water passage and a second external water passage, a first water passage disposed to a side of a pipe hole of the external pipe, an upper seal cap fixedly connected to an upper portion of the pipe hole to cascade a first water passage and the second external water passage, a lower seal cap fixedly connected to a lower portion of the external pipe, a main water passage extended from an upper portion of the lower seal cap to connect the pipe hole of the external pipe so as to connect a second internal water passage, a secondary water passage connected to the first water passage; a water passage control switch connected to the lower seal cap, the water passage control switch having a channel seal cap disposed in the water passage control switch, a first channel independently partitioned to the channel seal cap to connect the secondary water passage, a second channel and a third channel connected to the main water passage, a first through hole, a second through hole and a third through hole respectively corresponding to bottoms of the first channel, the second channel and the third channel, a water stop ring fit to the first through hole, an extension groove disposed to a side of the third through hole; and a rotary switch connected to a top of the channel seal cap, a penetration hole being disposed to a partition attached to a bottom of the channel seal cap, an interconnection channel and an arc plane disposed to an upper portion of the partition; wherein the internal pipe is pushed toward an inside of the external pipe to shorten a length of the telescopic water pipe structure when the penetration hole of the rotary switch aligns the first through hole of the first channel for communicating with the first water passage, and a bottom of the water stop ring fit to the first through hole is exactly and closely pasted to the arc plane to form a sealing state and an original length of the telescopic water pipe structure is kept when the penetration hole aligns the second through hole of the second channel for communicating with the second internal water passage, and the first through hole and the extension groove are exactly connected to the interconnection channel to stretch and prolong the telescopic water pipe structure when the penetration hole is communicated to the third through hole of the third channel.