Anti-Jamming Stapler Magazine with Guided Elastic Pusher
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Solution Overview
Problem
Existing stapler devices suffer from pusher deformation leading to jamming and improper staple transmission due to insufficient balance and excessive pressure, causing friction and deformation.
Innovation Solution
A stapler device with a magazine featuring a thrusting member supported by a resilient means and guide members, maintaining parallelism and balanced elastic force transmission through concave housings and guide channels to prevent deformation and jamming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pusher is made elastic to transmit force to staples, then the staple transmission is improved, but the pusher deforms under repeated stress causing jamming
Solution Approach 1:
The pusher is divided into multiple independent arms (first and second arms) that can move separately. Each arm is guided by corresponding guide members that constrain their motion paths. This segmentation allows the pusher to maintain overall functionality while preventing deformation-induced jamming through independent arm movement within guided paths.
Solution Approach 2:
Guide members are introduced as intermediary elements between the pusher arms and the container walls. These guide members mediate the interaction by providing constrained movement paths, preventing the pusher arms from deforming or moving in uncontrolled ways that would cause jamming, while still allowing elastic force transmission.
2Force
If the pusher exerts sufficient pressure on staples, then staple ejection force is improved, but excessive pressure deforms staples causing jamming
Solution Approach 1:
The pusher arms are designed with specific geometric features (such as rounded edges and controlled contact surfaces) that distribute pressure locally across the staple strip. This local quality control ensures sufficient ejection force is applied without concentrating stress that would deform individual staples, preventing jamming while maintaining staple integrity.
Solution Approach 2:
The pusher is designed with elastic properties that allow dynamic adjustment of pressure applied to the staples. The elastic arms can flex and adapt their contact pressure based on the resistance encountered, providing sufficient force for ejection while automatically reducing pressure to prevent staple deformation when resistance is low.
3Adaptability or versatility
If the pusher arms are spread apart to accommodate staple variations, then adaptability is improved, but friction and jamming risk increase
Solution Approach 1:
Guide members serve as intermediary elements that allow the pusher arms to adapt to staple variations while preventing harmful friction and jamming. The guide members provide defined movement paths that accommodate reasonable staple size variations but constrain the arms to prevent excessive spreading that would cause friction and jamming against the container walls.
Solution Approach 2:
The pusher arms are designed with controlled flexibility parameters that allow them to adapt to staple variations within acceptable ranges. The elastic properties and geometric dimensions are specifically chosen to provide adaptability for normal staple size variations while maintaining sufficient rigidity to prevent jamming through excessive arm spreading.
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
Ensures reliable and robust staple feeding without jamming, maintaining staple alignment and preventing deformation, ensuring consistent operation over numerous cycles.
Implementation Method 1
a resilient means (17) which, when the cover (45) of the closure member (5) is closed, pushes the thrusting member (7) forward
Data Source
AI summary
Stapler device with anti-jamming magazine of the staples (S) and provided with a strike site (F) of the staples fed by the magazine (1) comprising at least:—a container element (3) for storing and sliding the staples (S) towards the strike site (F);—a closure member (5) of the container (3) to open and close the latter;—a thrusting member (7), having two mutually parallel sidewalls and a connection wall approximately perpendicular to the sidewalls and of which it connects two sides so that at least one cross section of this thrusting member is U-shaped; said thrusting member (7) is assigned to transmit to the staples (S) contained in the container element (3) of the magazine (1) an elastic force directed towards the strike site. Said device comprises a support member (9) assigned to support the thrusting member (7) and to slide along at least one first guide member (13) of the stapler device, and it comprises resilient means (17) acting, in the direction of the strike site, on the thrusting member (7) directly or by means of the support member (9), which is provided with at least a concave housing (19) for matching with outer faces of free edges (21), opposite to the respective connecting sides of the transverse connection wall, of the side walls of the thrusting member (7) preventing deformation of the latter (7).