Senior Design GroupSenior Design GroupSean OKeeffe, James Bagg, Bo Song, Aaron Wagner, and Jon GardnerSean OKeeffe, James Bagg, Bo Song, Aaron Wagner, and Jon Gardner

Tiger Claw Deck FastenersTiger Claw Deck Fasteners

IntroductionIntroduction

Tiger Claw is a company that sells hidden fasteners in the deck building industry.

Tiger Claw deck fasteners are sold in more than 120 retail outlets nationwide.

Tiger Claw is the user and sponsor for the design.

Tiger Claw is a company that sells hidden fasteners in the deck building industry.

Tiger Claw deck fasteners are sold in more than 120 retail outlets nationwide.

Tiger Claw is the user and sponsor for the design.

IntroductionIntroduction

The project idea was to design a gun/hidden fastener combination.

Current fasteners are a 4 or 6 step process.

This product could give them an advantage in an open and growing market.

The project idea was to design a gun/hidden fastener combination.

Current fasteners are a 4 or 6 step process.

This product could give them an advantage in an open and growing market.

Customer NeedsCustomer Needs

Faster process. Reliable fastener. Viable cost. Maintain 3/16” spacing. 1 person/step process. Safe installment. Ease of use (set up, use, maintain).

Goal was to make process viable for the mid to large sized contractor.

Faster process. Reliable fastener. Viable cost. Maintain 3/16” spacing. 1 person/step process. Safe installment. Ease of use (set up, use, maintain).

Goal was to make process viable for the mid to large sized contractor.

SpecificationsSpecifications

Small time installing fasteners (<5 sec).

Upheaval test for fastener.Visibility test for acceptable 3/16”

spacing.Cost (Affordable for contractor).Customer acceptance rating (90%).Ergonomic rating (90%).Design for Lifetime (>5 years).Weatherproof and Durable (Drop test).

Small time installing fasteners (<5 sec).

Upheaval test for fastener.Visibility test for acceptable 3/16”

spacing.Cost (Affordable for contractor).Customer acceptance rating (90%).Ergonomic rating (90%).Design for Lifetime (>5 years).Weatherproof and Durable (Drop test).

CONCEPT GENERATION

-12 Original Ideas

-Constraints

-Customer Needs

-Feasibility

-Elimination Tools

-Concepts Narrowed

-Constructive Criticism

-Concepts Built Up Again

-Continuous Brainstorming Process

Selection CriteriaSelection Criteria

Selection Criteria

Ease of Use15%

Cost5%

Magazine Size5% Gun

Weight/Size5%

Installation Time20%

Upheaval Strength

15%

Easy Gun Removal

15%

Fastener Visibility

20%

A B C D E

Original Helicopter Poseidon Penetrator Originator Selection Criteria Weight Rating Weighted

Score

Rating Weighted

Score

Rating Weighted

Score

Rating Weighted

Score

Rating Weighted

Score

Cost 5% 3 0.15 5 0.25 3 0.15 4 0.2 4 0.2

Installation Time 20% 3 0.6 4 0.8 3 0.6 3 0.6 3 0.6

Upheaval Strength 15% 3 0.45 2 0.3 2 0.3 2 0.3 2 0.3

Gun Weight/Size 5% 3 0.15 4 0.2 3 0.15 4 0.2 3 0.15

Ease of Use 15% 3 0.45 2 0.3 5 0.75 4 0.6 4 0.6

Magazine Size 5% 3 0.15 2 0.1 3 0.15 3 0.15 3 0.15

Fastener Visibility 20% 3 0.6 3 0.6 5 1 3 0.6 3 0.6

Easy Gun Removal 15% 3 0.45 5 0.75 4 0.6 5 0.75 5 0.75

Total Score

Rank

3.70

1

3.00

5

3.30

4

3.40

2

3.35

3

Concept SelectionConcept Selection

Originator (Original and Penetrator)

Combination of two designs

Shoots from above deckUses anvil to split stapleRollers for quick installation

Originator (Original and Penetrator)

Combination of two designs

Shoots from above deckUses anvil to split stapleRollers for quick installation

Concept Selection (cont)Concept Selection (cont)

HelicopterTwo-step process

Drive nail into joistTorque edges into floorboards

High upheaval strength

HelicopterTwo-step process

Drive nail into joistTorque edges into floorboards

High upheaval strength

Concept Selection (cont)Concept Selection (cont)

PoseidonShot from side/below deck

3-pronged stapleAnvil to redirect staple

Capable of fully constraining projectAdjustable spacing between deck

boards

PoseidonShot from side/below deck

3-pronged stapleAnvil to redirect staple

Capable of fully constraining projectAdjustable spacing between deck

boards

Critical SubsystemsCritical Subsystems

Originator

Constraining Both Deck Boards

Syncing the Feed Mechanism

Bending Fastener Within the Board

GapConflicting ForcesPossibly Need to be a Two Step Process

Originator

Constraining Both Deck Boards

Syncing the Feed Mechanism

Bending Fastener Within the Board

GapConflicting ForcesPossibly Need to be a Two Step Process

Critical SubsystemsCritical Subsystems

Helicopter

Feed MechanismExtremely Difficult

Two-Step Process Required PossiblyTwo Triggers, Two Cylinders?

Constraining Both Deck Boards

Helicopter

Feed MechanismExtremely Difficult

Two-Step Process Required PossiblyTwo Triggers, Two Cylinders?

Constraining Both Deck Boards

Critical SubsystemsCritical Subsystems

Poseidon

Pneumatic Cylinder Below DeckingParallel to Deck Boards – Large, Awkward

Perpendicular to Deck Boards –

Additional Mechanism to Force Staple

into Boards.

Feeding Mechanism Below Decking

Poseidon

Pneumatic Cylinder Below DeckingParallel to Deck Boards – Large, Awkward

Perpendicular to Deck Boards –

Additional Mechanism to Force Staple

into Boards.

Feeding Mechanism Below Decking

Questions????Questions????