Length adjusting device
OwnerTung-Cheng Cheninventor
Life of this patent
Estimating the term…
Abstract
A length adjusting device has a guiding track and a controlling assembly. The guiding track has a guiding structure and a locking structure. The controlling assembly has a connecting base, an engaging body, a switch base, a spring, a switch, and a controlling body. The guiding track is mounted between the connecting base and the engaging body. The engaging body is selectively engaged with the guiding track. The switch is combined with the connecting base and has a switching recess. The spring is mounted between and compressed by the engaging body and the switch base. The switch is selectively engaged in the switching recess. The controlling body is mounted on the switch base and has a gear engaged with the guiding track.
Claims10
A length adjusting device comprising:
- a guiding track comprising
- a guiding structure disposed on the guiding track and comprising multiple teeth;
- and
- a locking structure disposed on the guiding track and comprising multiple engagement notches disposed along a longitudinal direction of the guiding track;
- a controlling assembly selectively and moveably mounted on the guiding track and comprising
- a connecting base;
- an engaging body, and the guiding track mounted between the connecting base and the engaging body, and the engaging body comprising an engaging block formed on the engaging body and selectively engaged with one of the engagement notches;
- a switch base combined with the connecting base, engaged with the connecting base, and comprising
- an accommodating hole formed through the switch base;
- a restricting flange formed on the switch base and disposed around the accommodating hole;
- and
- a switching recess formed in the restricting flange;
- a spring mounted between and compressed by the engaging body and the switch base;
- a switch mounted on the switch base, inserted through the accommodating hole, and engaged with the engaging body, and the switch comprising a switching block selectively engaged in the switching recess;
- and
- a controlling body mounted on the engaging body and the switch base, engaged with the connecting base, and comprising
- a rotatable knob mounted on the switch base;
- and
- a gear formed on the rotatable knob, inserted into the engaging body, the switch base, and the guiding structure, and engaged with part of the teeth.
Dependencies are inferred from the claim text.