Dual-shaft synchronous transmission device

摘要

A dual-shaft synchronous transmission device is applied to an electronic apparatus. The distance between the two shafts of the dual-shaft synchronous transmission device is shortened so that the electronic device can be thinned and lightweight. The dual-shaft synchronous transmission device includes a driver and a reactor respectively disposed on a first shaft and a second shaft and a link unit. Spur gear structures or crown gear structures are respectively disposed on the driver and the reactor. Crown gear structures or spur gear structures are respectively disposed at two ends of the link unit correspondingly engaged with the spur gear structures or crown gear structures of the driver and the reactor. When the first shaft and the driver are rotated, the driver rotates the link unit to drive the reactor and the second shaft to synchronously rotate in a direction reverse to the rotational direction of the driver.

主权项

1. A dual-shaft synchronous transmission device, comprising:
a first shaft having a fixed section and a pivoted section; a second shaft having a fixed section and a pivoted section; a driver having a shaft section and a shaft hole formed on the shaft section, the pivoted section of the first shaft being fitted in the shaft hole of the driver to mount the driver on the pivoted section of the first shaft, a crown gear structure being disposed on the shaft section of the driver; a reactor having a shaft section and a shaft hole formed on the shaft section, the pivoted section of the second shaft being fitted in the shaft hole of the reactor to mount the reactor on the pivoted section of the second shaft, the shaft section of the reactor being parallel to the shaft section of the driver, a crown gear structure being also disposed on the shaft section of the reactor; and a link unit including a shaft section normal to the shaft sections of the driver and the reactor, the link unit further including spur gear structures at two ends of the shaft section, the spur gear structures being engaged with the crown gear structures of the driver and the reactor, whereby via the link unit, the first shaft with the driver and the second shaft with the reactor can be synchronously rotated in reverse directions; wherein the driver, the reactor and the link unit are disposed between a main fixing plate and a subsidiary fixing plate, the main fixing plate and the subsidiary fixing plate having identical structures, upper and lower sections of the main fixing plate and the subsidiary fixing plate being respectively formed with perforations, the pivoted sections of the first and second shafts being passed through the perforations to fit the main fixing plate and the subsidiary fixing plate on the first and second shafts, each of the main fixing plate and the subsidiary fixing plate having a base section and a recess formed on the base section for together pivotally connecting with the shaft section of the link unit, permitting the link unit to rotate between the base sections.