Single-Motor Saddle Stapler Layout for Flat Clinch Binding
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Solution Overview
Problem
Saddle binding staplers require separate motors for the driver and clincher units, leading to increased size, component count, and costs, making it structurally difficult to operate both with a single motor.
Innovation Solution
A stapler design that uses a single motor to operate both the driver and clincher units, with a coupling portion and transmission units to transmit the driving force, allowing for a compact structure and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate motors are provided for the driver and clincher units in a saddle binding stapler, then reliable operation of both units is achieved, but the size of the stapler and the number of components increase
Solution Approach 1:
The patent combines the driver unit and clincher unit into a integrated assembly where both units share common components such as the staple magazine, sheet guide, and housing structure. The driver and clincher are positioned adjacent to each other within the same operational space, allowing them to function reliably while reducing the overall component count and stapler size compared to completely separate motor-driven units
2Device complexity
If the driver and clincher are disposed close to each other, then a single motor can operate both units, but the sheet passing area becomes insufficient for saddle binding
Solution Approach 1:
The patent arranges the driver and clincher units in a vertical stacking configuration rather than horizontal placement, utilizing the vertical dimension to create sufficient sheet passing area while keeping the units close enough for single-motor operation. The staple magazine is positioned vertically, and the driver and clincher operate in vertically stacked positions, allowing sheets to pass through the horizontal gap while maintaining compact overall footprint
3Shape
If a movable clincher is used to achieve flat clinch, then staple legs are bent from base portion side, but an additional motor is required for operating the movable clincher
Solution Approach 1:
The driver and clincher units share a common motor drive system, where a single motor operates both units through a synchronized mechanism. The flat clincher design is maintained with the clinching surface positioned to bend staple legs from the base portion side, achieving the desired flat profile while eliminating the need for a separate motor by integrating the drive systems
Data Source
AI summary
A stapler for performing binding processing of binding a sheet with a staple, the stapler includes: a driver unit configured to drive the staple to the sheet; a bending unit configured to bend a staple leg of the staple that is driven by the driver unit and penetrates the sheet; a single motor configured to operate the driver unit and the bending unit; a coupling portion coupling the driver unit and the bending unit on one side in a direction orthogonal to a sheet passing direction of the sheet passing between the driver unit and the bending unit and along the sheet surface in the case of performing the binding processing; and a transmission unit configured to transmit a driving force of the motor to at least one of the driver unit or the bending unit via the coupling portion.