Sheet Feeding Roller Drive Layout With Nested Sliding Gear
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sheet feeding devices have a space occupancy issue due to the length of the drive transmission mechanism, which increases the space required for the sheet feeding portion, as the protrusion and notch engagement leads to a longer axial length.
Innovation Solution
A sheet feeding device with a drive transmission mechanism that includes a rotation axis, a drive input gear, and a drive transmission gear capable of sliding between two positions to transmit or cut off the rotation drive force efficiently, reducing the axial length and minimizing space occupancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-way clutch with protrusion and notch engagement is used to transmit power to the sheet feeding roller, then the power transmission function is achieved, but the axial length of the drive transmission mechanism is increased
Solution Approach 1:
The drive transmission gear is nested within the drive input gear, with the drive transmission gear positioned inside the hollow cylindrical space of the drive input gear. This nesting arrangement allows the transmission mechanism to be compact in the radial direction while maintaining the necessary axial length for power transmission engagement between the protrusion and notch.
Solution Approach 2:
The invention transitions from a conventional axial engagement arrangement to a arrangement where the drive transmission gear rotates within the hollow space of the drive input gear. This dimensional reorganization allows power transmission to occur through radial positioning and axial sliding within the hollow space, rather than requiring extended axial engagement lengths.
2Reliability
If the drive transmission mechanism is extended to ensure reliable power transmission, then the transmission reliability is improved, but the space occupied by the sheet feeding portion is increased
Solution Approach 1:
By nesting the drive transmission gear within the hollow cylindrical space of the drive input gear, the overall footprint of the drive transmission mechanism is reduced. The hollow space utilization allows the transmission components to be arranged concentrically, minimizing the radial and axial space requirements while maintaining reliable power transmission through the engagement mechanism.
Solution Approach 2:
The drive input gear and drive transmission gear are combined into a compact integrated arrangement where the transmission gear rotates within the hollow space of the input gear. This merging of functional elements into a compact configuration reduces the overall space occupied by the sheet feeding portion while preserving the power transmission reliability through maintained engagement between the protrusion and notch.
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 solution effectively reduces the axial length of the drive transmission mechanism, minimizing space occupancy and enhancing the compactness of the sheet feeding device, allowing for more efficient sheet feeding operations.
Implementation Method 1
The drive transmission mechanism includes a drive input gear and a drive transmission gear. The drive input gear is formed in a cylinder like shape having an inner space inside and arranged on the rotation axis so as to rotate around the rotation axis by input of the rotation drive force of the driving portion. The drive transmission gear is arranged between the feeding roller and drive input gear on the rotation axis so as to rotate around the rotation axis and to become capable of slide-moving in an axial direction of the rotation axis
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In a sheet feeding device (3), a feeding roller (51) is driven and rotated to feed a sheet (P) in a conveying direction of a sheet conveying path (300) and a drive transmission mechanism (5F) transmits rotation drive force generated in a driving portion (500) to the feeding roller (51). In this mechanism, a drive input gear (55) having an inner space (551) is arranged on a rotation axis (59) supporting the feeding roller (51) rotatably so as to rotate by the rotation drive force. A drive transmission gear (53) arranged between the feeding roller (51) and drive input gear (55) on the rotation axis (59) rotates and becomes slide-movable along the rotation axis (59) between a first position transmitting the rotation drive force to the feeding roller (51) and a second position cutting off the transmission of the rotation drive force to the feeding roller (51) by the rotation drive force from the drive input gear (55) to transmit the rotation drive force to the feeding roller (51).