| CPC B25B 23/0035 (2013.01) [B25B 23/0028 (2013.01)] | 6 Claims |
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1. A locking device, comprising:
a first component having a through hole, wherein an inner wall of the through hole is provided with a first engaging portion, wherein the first component defines a first end and a second end spaced from the first end, wherein the through hole is formed on the second end and penetrates through two opposite sides of the second end along a longitudinal axis of the through hole, wherein the through hole has a small diameter section, a large diameter section communicating with the small diameter section, where the small diameter section is smaller than the large diameter section, and an internal extended section formed at a terminal end of the large diameter section opposite to the small diameter section, wherein the first engaging portion is formed on the small diameter section; and
a second component selectively rotatably connected to the through hole and provided with a second engaging portion detachably engaged with the first engaging portion, wherein the second component is configured to be movable relative to the through hole along the longitudinal axis to be switched between an unlocked position where the second engaging portion is disengaged from the first engaging portion and a locked position where the second engaging portion is engaged with the first engaging portion, so that the second component and the through hole are selectively rotatable relative to each other, wherein the second component has a first part and a second part connected to the first part, wherein the second part is selectively rotatably connected to the through hole, wherein the second engaging portion is formed on an outer periphery of the second part, wherein the second part has a large diameter portion, a small diameter portion connected to the large diameter portion, and a shoulder portion formed between the large diameter portion and the small diameter portion, wherein the large diameter portion is larger than the small diameter portion, wherein the second engaging portion is formed on the large diameter portion, and wherein the locking device further includes an elastic member having two opposite ends respectively elastically abutting against the internal extended section and the shoulder portion to bias the second component toward the locked position.
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