Flat Motor Winding Device with Planetary Gear Backstop
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Solution Overview
Problem
Existing winding devices face challenges in reducing thickness while maintaining the ability to prevent looseness of elongated members, particularly when housed in shoe soles, as they often require a motor with a large diameter to maintain output, and the perpendicular arrangement of motor and winding ring complicates thickness reduction.
Innovation Solution
A winding device configuration featuring a flat motor with a deceleration mechanism, such as a planetary gear mechanism, and a backstop mechanism that restricts rotation in the backward direction, allowing the device to be thinned and preventing looseness by using a flat motor and deceleration mechanism, with the backstop mechanism integrated into the device to prevent rotation by external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the axial direction of the motor is directed to the in-plane direction of the sole, then the output of the motor can be maintained, but the thickness of the winding device increases
Solution Approach 1:
The invention changes the orientation of the motor from axial (perpendicular to sole plane) to flat (parallel to sole plane), effectively transitioning the motor's operational dimension. This allows the motor to maintain its output while reducing the device thickness by utilizing the in-plane direction for motor placement rather than the thickness direction
2Reliability
If the axial direction of the motor and winding ring are perpendicular to each other with a deceleration member, then rotation can be prevented by external force, but the device thickness increases
Solution Approach 1:
The invention merges the motor and winding ring into a coplanar arrangement where both components lie in the same plane (parallel to the sole), eliminating the need for a vertical deceleration mechanism. The motor's output shaft directly connects to the winding ring, maintaining reliability while reducing thickness by combining functions in the same dimensional plane
Solution Approach 2:
The invention transitions from a three-dimensional stacked arrangement (motor above or below winding ring) to a two-dimensional coplanar arrangement, where both motor and winding ring operate in the same plane. This dimensional change allows the drive force to be transmitted horizontally rather than vertically, reducing device thickness while maintaining the backstop function
3Length of moving object
If the motor diameter is decreased to reduce device thickness, then the device thickness is reduced, but the motor output is lowered
Solution Approach 1:
The invention allows the motor to operate in a flat configuration parallel to the sole plane, effectively utilizing the in-plane dimensions (length and width) rather than the thickness dimension. This enables the motor to maintain its diameter and output while the device thickness is reduced, as the motor's rotational axis is now parallel to the sole surface rather than perpendicular to it
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The configuration enables thickness reduction of the winding device while effectively preventing looseness of the elongated member, allowing for a more compact design that can be applied to various locations beyond shoe soles.
Implementation Method 1
the deceleration mechanism is preferably a planetary gear mechanism having a sun gear, a planetary gear, a fixed internal gear, and an output internal gear
Implementation Method 2
a backstop mechanism configured to restrict rotation of the winding member at least in a backward direction by external force
Data Source
AI summary
Provided is a winding device configured so that the entirety of the device can be thinned and looseness of an elongated member can be reduced. In a winding device 1A, a flat motor 2 is used as a motor, and a spool 3 and a magical planetary gear mechanism 4 are formed flat along an extending XY plane of the flat motor 2. Thus, the entirety of the device can be configured flat, and can be thinned. Moreover, the magical planetary gear mechanism 4 prevents rotation of the spool 3 by external force, and therefore, looseness of the elongated member can be reduced.