Patent ID: 9576752
Date: 2017-02-21
CPC Classifications: F16D,H01H

Claim:
1. A clutch mechanism for an energy storage device, comprising: a load gear; a drive gear; a one-way bearing; a bushing; a gear shaft including a gear portion and a clutch portion, the load gear being connected coaxially to the bushing via the one-way bearing so as to be rotatable in a single direction, the bushing being connected coaxially to the clutch portion so as to be rotatable in two directions, and the drive gear being externally meshed with the gear portion; the gear shaft including multiple cylinders, and including a push rod, a rotary sleeve and an elastic element located in a cavity of the gear shaft, wherein the clutch portion includes multiple holes corresponding to the cylinders, the cylinders being located in the holes, and wherein, at a junction of the gear portion and the clutch portion, a gear shaft connecting hole is present; the rotary sleeve including two rotary sleeve slide holes extending spirally in an axial direction, and including multiple sleeve slots corresponding to the cylinders, the two rotary sleeve slide holes being centrosymmetric around the axis of the rotary sleeve, and an inside wall of the bushing including multiple bushing slots corresponding to the cylinders; the push rod including a push rod slide hole and a push rod connecting hole and is slideable axially, wherein one end of the push rod is configured to pass through the rotary sleeve and press the elastic element, and the push rod is connected to the gear shaft by a guide pin, configured to pass through the push rod slide hole and the gear shaft connecting hole, and is connected to the rotary sleeve by another guide pin configured to pass through the push rod connecting hole and the two rotary sleeve slide holes; and a press block, fixed to the drive gear, the press block being configured to contact the other end of the push rod and pushing the push rod to slide axially; wherein when the press block pushes the push rod, the cylinders are configured to be released so as to unlock the bushing from the gear shaft, and when the press block leaves the push rod, the cylinders are configured to be clamped between the rotary sleeve and the bushing so as to lock the bushing to the gear shaft.