Fluid switching apparatus

摘要

The present patent application discloses a fluid switching apparatus. The fluid switching apparatus includes a positioning device, a second rotor, a first rotor, and a button which is mounted on a side of the first rotor. The positioning device, the second rotor and the first rotor are arranged coaxially from left to right. Two or more nozzles are arranged circumferentially on the positioning device. A plurality of blocks is provided on the second rotor. As the rotation of the second rotor, the blocks may sequentially block different nozzles. The button is used for driving the first rotor to rotate. The first rotor drives the second rotor to rotate. The transmission of the first rotor and the second rotor is unidirectional.

主权项

1. A fluid switching apparatus comprising:
a positioning device, a second rotor, a first rotor, and a button which is mounted on a side of the first rotor, wherein the positioning device, the second rotor and the first rotor are arranged coaxially; two or more nozzles are arranged circumferentially on the positioning device; a plurality of blocks are provided on the second rotor; wherein upon rotation of the second rotor the plurality of blocks sequentially block the two or more nozzles; the button drives the first rotor to rotate; when the first rotor rotates in a first rotation direction, the first rotor drives the second rotor to rotate, and when the first rotor rotates in a reverse second rotation direction, the second rotor does not rotate; the fluid switching apparatus further comprises a spring which pushes the second rotor toward the positioning device; the positioning device is provided with a plurality of circumferentially arranged positioning grooves which are connected to each other, the second rotor is provided with a positioning projection; an inclined surface is provided on each of the plurality of positioning grooves and the positioning projection, and as the second rotor rotates relative to the positioning device, the positioning projection successively slips out of one of the plurality of positioning grooves; and a bottom of each of the plurality of positioning grooves defines an integrating point, a boundary line between each two of the plurality of positioning grooves defines a critical portion, and the inclined surface of the plurality of positioning grooves and the positioning projection defines a transition section; prior to each critical portion, a rotation of the second rotor relative to the positioning device automatically rotates to a previous integrating point without applying an external force; after the critical portion, the rotation of the second rotor relative to the positioning device automatically rotates to a next integrating point without applying the external force.