Electronic lifting seat post

Abstract

An electronic lifting seat includes a telescopic tube body consisting of an outer tube and a liftable inner tube, with a headstock at the top of the inner tube; a hydraulic cylinder located within the telescopic tube body and having a trigger end that can be pressed down to activate or release, thereby controlling the lifting and positioning of the inner tube; a motor located within the headstock; an end-face cam that can be driven to rotate by the motor and has an end-face profile and two protrusions; a rocker arm that can swing between a trigger position and a release position as the end-face profile rotates, thereby activating or releasing the trigger end; and a circuit board electrically connected to the motor and equipped with a sensor to detect the position of the protrusions, thereby controlling the motor to stop rotating and precisely positioning the rocker arm to achieve the lifting, adjustment, and positioning of the inner tube.

Claims

1. An electronic lifting seat post, comprising: A telescopic tube body includes an outer tube, an inner tube that can slide along the axial direction of the outer tube, and a headstock fixed to the top of the inner tube; a fluid cylinder is installed inside the telescopic tube body and has a trigger end protruding from the bottom of the headstock; when the trigger end is pressed down to activate the fluid cylinder, the inner tube of the telescopic tube body can be raised or lowered for adjustment; when the trigger end is released, the fluid cylinder can be deactivated, the inner tube of the telescopic tube body can be positioned at the adjusted height; a motor is mounted on the tube body for controlled rotation. The headstock is housed within a drive shaft; an end face cam, driven by the drive shaft, has an end face profile, a first protrusion, and a second protrusion formed thereon; the end face profile has a highest position and a lowest position, with the first protrusion relative to the highest position and the second protrusion relative to the lowest position; a rocker arm, pivotally mounted within the headstock, is swayable between a trigger position and a release position, and has a connecting end and a pressing end; the connecting end rollably contacts the end face profile of the end face cam, and when its... When the contact is applied to the highest position, it can be tilted upwards, placing the rocker arm in the trigger position. The pressure end then presses down against the trigger end of the fluid cylinder. When the contact is applied to the lowest position, the rocker arm is in the release position, which can be used to release the trigger end of the fluid cylinder. A circuit board, installed inside the headstock and electrically connected to the motor, has a sensor on it to detect the first and second protrusions of the end face cam. When the sensor detects the first protrusion, it can control the motor to stop rotating, thus... The rocker arm is positioned in the release position; when the sensor detects the second protrusion, it can control the motor to stop rotating, so that the rocker arm is positioned in the trigger position; wherein, the detectable area of ​​the second protrusion of the end face cam is larger than that of the first protrusion; the sensor has two pairs of sensing elements arranged horizontally spaced apart, and when the first protrusion rotates between any pair of sensing elements, or when the second protrusion rotates between the two pairs of sensing elements, a sensing signal can be sent to the circuit board respectively, and the circuit board can control the motor to stop rotating.

2. The electronic lifting seat tube as described in claim 1 further includes a battery detachably mounted on the headrest for electrically connecting to the circuit board and the motor.

3. The electronic lifting seat tube as described in claim 1, wherein, The fluid cylinder has a cylinder body and a piston rod that can slide along the inside of the cylinder body; the top end of the cylinder body is connected to the top end of the inner tube; the bottom end of the piston rod is connected to the bottom end of the outer tube; and the trigger end is located at the top end of the cylinder body.

4. The electronic lifting seat tube as described in claim 1, wherein, The end face cam has a mounting shaft hole and a positioning cam; the mounting shaft hole can be fitted and fixed to the drive shaft of the motor; the end face cam is further equipped with a fixing seat and a bearing; the fixing seat can be locked inside the head seat and has a bearing positioning groove for the bearing to be installed and fixed inside; the bearing is fitted and fixed to the positioning cam of the end face cam.

5. The electronic lifting seat tube as described in claim 1, wherein, The rocker arm includes a rocker arm body and a roller; the rocker arm body forms the main part of the rocker arm and has a wheel axle protruding from it relative to the linkage end, which can be pivotally positioned by the roller and thereby form the linkage end so that it can roll into contact with the end face profile of the end face cam.

6. The electronic lifting seat tube as described in claim 2, wherein, The head unit has a main housing and a cover mounted on the main housing; a clamping assembly is mounted on the main housing for assembling a pad; a receiving space is defined between the main housing and the cover, which can accommodate at least the motor, end face cam, rocker arm and circuit board; the cover can be used to detachably mount and fix the battery thereon.

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