Adjustable Swing System
Abstract
Abstract here - a short statement of the need, findings of project and project outcome.
Team members
- Adam Stone
- Collin Newman
- Brendan Fraser
- Tyler Wood
- Mohammad Alrashidi
Other Resources
- Rene Canfield
- Carolyn Burchfield
Problem Statement/overview of the need
A custom swing is needed to provide a child with a gentle swinging motion while not hindering the medical conditions of said child.
Design Specifications
- Swing able to support a 60lb child
- Provide a type of safety harness
- Adjustable back for added comfort
- Swing will allow child to have a gentle swinging motion
- Seat must not make medical conditions worse
Background research
Safety Straps
Indoor Swing
Problems that need to be addressed
- Seats do not have a back adjustment
- Swing systems are not space efficient
- Expensive
- No easy height adjustment
- Not made for a child with multiple medical conditions
- Material on seat has to be able to be sanitized
Conceptual Design
Design Concepts
Mounting:
Slide Door Frame
Pros:
- Space Efficient
- Removable Bar
- Sturdy
Cons:
- Side mounts are permanent
- Difficult to enter room when in use
C Clamp Style Door Frame
Pros:
- Will mount to any door frame
- Portable
- Easy to attach to frame
Cons:
- Could loosen over time
- Possible wall damage
- Possible door frame damage
Independent Frame
Pro:
- Sturdy
- Portable to an extent
Cons:
- Heavy
- Hard to store when not in use
- Takes up a lot of space
Seat and Adjustments
Car Seat Back Adjustment
Pro:
- Easily adjustable
- Lever action to adjust
- Comfortable
- 5 Point harness could be attached
Cons:
- Bulky/Heavy
- Spring loaded back
Adjustable Seat
Spring Loaded Pin
Pros:
- Easily adjusted with spring loaded pin
- Less likely to fail
- Comfortable
- 5 point harness could be attached
Cons:
- Could be bulky/heavy
- Frame could be awkward
- Could be complex
Medical Seat with Netting
Pros:
- Could be bought
- 5 Point harness or netting for security
- Proven safe and simple
Cons:
- Possibly not comfortable
- Not Adjustable
Height Adjustment
Height Adjustment Design
Pro:
- Easier to place kid in seat
- Swing would not move
- Allows adjustment of rope at the same time
Cons:
- Possibly complicated
- Added stress to door frame when being adjusted
Evaluate concepts/select candidate
Detailed Design
Description of selected design
The design we used uses a frame made form tubing. The seat has an adjustable back with a pin lock. The seat is mounted to a frame which is suspended form the top from the frame. Bearing are used to allow the swinging motion. The swing motion will be gentle.
Detailed description of selected design
The frame design we are using uses 1.5 inch steel tubing. It will be bent on both of the side and connected in the middle. This will allow the frame to be able to be taken apart for easy transportation. The seat design we are using allows for one degree of freedom. The back of the seat will adjust almost to 90, 45, and just above 180 degrees. This is controlled by a pin on the hinge. It has a high quality, firm foam padding on the seat for comfort. The seat also has a double shoulder strap and lap strap safety harness. The swing is connect to the frame through an enclosed mount. In side the mount there are 2 bearing on either end. A shaft will slide through the bearing from the side. The swing will then be attached to the shaft by thread in the shaft. The swing using a bearing as a way to swing will allow little on no moment in any other way but forwards and backwards.
Analysis
Displacement test on the frame
Stress test on the seat connector
Mobility test on the seat
Engineering analysis 1
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Engineering analysis 2
Engineering analysis 3
CAD Drawings
Bill of Materials
Assembly Instructions
Fabrication Process
A design was chosen that we did not design and we teamed up with that group to complete the build. Please refer to http://ttu-eime.csc.tntech.edu/index.php/Secure_Position_Child_Swing to see the completed project
