Driving mechanism

Abstract

The invention relates to a driving mechanism which comprises a shell, a fixed core shaft, at least one accelerating gear set, a rotating disk and at least two centrifugal blades. A plurality of oblique teeth are arranged on the inner wall of the shell, the accelerating gear set is accommodated in the shell and pivoted with the fixed core shaft, and the accelerating gears of the accelerating gear set are engaged with the oblique teeth on the inner wall of the shell. The rotating disk is accommodated in the shell, pivoted with the fixed core shaft and driven by the accelerating gear set. The centrifugal blades are arranged on the rotating disk, a unidirectional movable joint is arranged at one end of each centrifugal blade, and the oblique teeth are clamped by the unidirectional movable joints when the rotating direction of the shell is switched.

Description

technical field [0001] The present invention relates to a transmission mechanism, in particular to a transmission mechanism with deceleration and self-locking functions and applicable to a projection curtain. Background technique [0002] Figure 1A and Figure 1B It is a schematic cross-sectional view showing a traditional design of a transmission mechanism 100 with deceleration and self-locking functions. Please also refer to Figure 1A and Figure 1B , when the casing 102 rotates to drive the three sets of acceleration gear sets 104a, 104b, 104c located inside to rotate, it can drive the centrifugal automatic shoe 106 to rotate centrifugally at high speed. When the centrifugal automatic shoe 106 is centrifugally rotated along the R direction at a high speed, it will simultaneously move outward along the S direction and rub against the casing 102 to obtain a deceleration effect. On the other hand, when the casing 102 stops rotating, the centrifugal automatic shoe 106 al...

AI Technical Summary

Problems solved by technology

[0003] Although this traditional transmission mechanism 100 has the functions of deceleration and self-locking, its mechanism design is quite complicated, for example, it needs to be equipped with a clutch structure composed of switch springs (not shown), and the acceleration device needs to be composed of three sets of acceleration gear sets 104a, 104b , 104c, so the overall manufacturing process is complicated and the cost is extremely high

Furthermore, the traditional transmission mechanism 100 has less self-locking times per rotation, so it is impossible to perform finer self-locking position control.

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