Patent ID: 8800151

Claim:
A tube cutting device with a rapid separable handle, comprising: a tube cutter, comprising a C-shaped housing, a first recess space, a one-way rotation part, and a limit part; and a handle, comprising: a grip part; a C-shaped guiding seat located at the grip part for guiding unidirectional rotation of the C-shaped housing via the one-way rotation part; a separation control part disposed at the grip part and capable of switching between a combination position and a separation position, when located in the combination position, the separation control part engaging with the limit part so that the tube cutter and the handle are mutually fixed to each other, when located in the separation position, the separation control part and the limit part being retracted away from each other so that the tube cutter and the handle are separated away from each other to independently perform tube cutting; a control button disposed at the grip part and used to control the separation control part to switch between the combination position and the separation position; and a second recess space defined to be located correspondingly to the first recess space; wherein the grip part is equipped with an accommodation space extending from one end of the grip part connecting the C-shaped guiding seat to the other end of the grip part, a control opening and a control button sliding channel, the C-shaped guiding seat comprises a top surface, a guiding outer surface, a sliding surface and at least a one-way rotation limit element, the separation control part comprises a linear motion part, an extension driving part, a C-shaped limit part, an engaging part, and a resilient element, the separation control part is installed inside the accommodation space so that at least the resilient element of the separation control part engages with the other end of the grip part, an arc extension range of the C-shaped limit part is greater than 180 degrees to withhold the tube cutter, the one-way rotation part corresponds to the top surface, and engages with the one-way rotation limit element, the guiding inner surface engages with the guiding outer surface and is capable of sliding relative to the guiding outer surface, the limit flange engages with the sliding surface and is capable of sliding relative to the sliding surface, when the separation control part is located in the combination position, the engaging part is pushed by the resilient element, the C-shaped limit part engages with the guiding groove, and the limit flange is limited by the C-shaped limit part so that the tube cutter is capable of being rotated without being separated therefrom, when the separation control part is located in the separation position, the engaging part reversely squeezes the resilient element, the C-shaped limit part is separated out of the guiding groove, and the limit flange is free from being limited by the C-shaped limit part so that the tube cutter is capable of being separated therefrom.