Quick disassembly structure and bicycle light

1. A quick disassembly structure, comprising:

a lower assembly, comprising: a first connecting base and a fixing component; the fixing component is movably mounted on the first connecting base through a first elastic component, and is vertically movable with respect to the first connecting base;

an upper assembly, detachably mounted on the lower assembly; the upper assembly comprises: a second connecting base and at least one positioning device; the second connecting base is further provided inside with a guiding groove in an axial direction thereof, and the second connecting base is further provided inside with at least one mounting groove in a radial direction thereof; the at least one positioning device is arranged within the at least one mounting groove, and the at least one positioning device is capable to be transversely biased into the guiding groove or retracted from the guiding groove;

an axial assembly, fixed to the lower assembly; the axial assembly comprises: an axial component; a first end portion of the axial component passes through the fixing component, and is fixed to the first connecting base; a second end portion of the axial component is arranged within the guiding groove, a side wall of the axial component is provided with a limit area, and the first end portion and the second end portion of the axial component are opposite to each other;

wherein, when pressing the upper assembly, the positioning device is capable to be engaged into the limit area, so as to fix the upper assembly and the lower assembly; when pulling up the upper assembly, the positioning device is capable to be disengaged from the limit area, so as to unfix the upper assembly and the lower assembly.

2. The quick disassembly structure of claim 1 , wherein the axial assembly further comprises: a guiding component, which movably sleeves the axial component, and the guiding component is arranged within the limit area.

3. The quick disassembly structure of claim 2 , wherein the positioning device comprises: a positioning component, which is arranged within the mounting groove through a second elastic component; when the second elastic component is not compressed, a part of the positioning component is arranged within the guiding groove.

4. The quick disassembly structure of claim 3 , wherein the positioning component is provided with a first inclined portion at an end proximal to the guiding groove, and the second end portion of the axial component is further provided with a second inclined portion; when pressing down the upper assembly, the second inclined portion abuts against the first inclined portion, so that the positioning component is capable to be completely retracted into the mounting groove.

5. The quick disassembly structure of claim 4 , wherein a width of the first inclined portion gradually increases from a part thereof proximal to the lower assembly to a part thereof away from the lower assembly; correspondingly, a width of the second inclined portion gradually decreases from a part thereof proximal to the lower assembly to a part thereof away from the lower assembly.

6. The quick disassembly structure of claim 5 , wherein a third inclined portion is provided on the guiding component; a width of the third inclined part gradually increases from a part thereof proximal to the lower assembly to a part thereof away from the lower assembly.

7. The quick disassembly structure of claim 6 , wherein a first transition portion is provided on a part of an inclined surface of the second inclined portion proximal to the third inclined portion; a second transition portion is provided on a part of an inclined surface of the third inclined portion proximal to the second inclined portion; a width of the second transition portion is not less than a width of the first transition portion.

8. The quick disassembly structure of claim 1 , wherein the upper assembly is provided with a first serrated portion on an end surface thereof proximal to the lower assembly; correspondingly, an end surface of the lower assembly thereof proximal to the upper assembly is provided with a second serrated portion; when the upper assembly and the lower assembly are fixed, the first serrated portion is capable be engaged with the second serrated portion to restrict relative rotation between the upper assembly and the lower assembly.

9. The quick disassembly structure of claim 8 , wherein the quick disassembly structure further comprises: a clamping device; the clamping device is fixed to an end of the first connecting base away from the upper assembly.

10. A bicycle light, comprising the quick disassembly structure of claim 1 , and further comprises: a light body; the light body is mounted to the upper assembly.