DAEDALUS TECHNOLOGIES, INC.
MAKING TECHNOLOGY MORE ACCESSIBLE
DAESSY Mounting System
Frame Clamps for Wheelchair Mounting
Frame Clamp Inner Piece Styles
When ordering a complete DAESSY Wheelchair mounting assembly the the size and shape of the wheelchair frame to which the mount will be attached must be measured and indicated on the order form. Wheelchair manufacturers vary tubing size and shapes within model lines and within model years, the name of the wheelchair is not sufficient information to determine what Frame Clamp Inner Pieces is required. If no size is indicated on the order a 1" round clamp with be included by default; Exchanges are subject to fees.
The Frame Clamp Inner Pieces are available to fit a wide range of wheelchair tubing styles – round, rectangular and elliptical. Standard Frame Clamp Inner Pieces may be used on wheelchair frames that have a clear length of 2" to 2 1/2" of straight frame tubing accessible. Wheelchair tubing with dimensions between the available Frame Clamp sizes may be shimmed with Adapter Sleeves. If only a shorter distance of wheelchair frame tubing is accessible, or the tubing is very slightly curved it may be possible to use a Side Mount Inner Piece. For wheelchairs that do not have any tubing accessible for a Frame Clamp to clamp around, a Bolt-on Adapter may be required. A small number of wheelchairs will require Model Specific Frame Clamps or Bolt-on Adapters.
The Frame Clamp Inner Pieces are manufactured to precise sizes. Frame Clamps must be installed on the tube size for which they are designed.
[GO TO: Determining the Frame Clamp Size]
[GO TO: Frame Clamp Outer Pieces] | [GO TO: Connecting Frame Clamp Components]
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Standard Frame Clamp Inner Pieces
Standard Frame Clamp Inner Pieces (UFCxxxxIP) consist of a Cap and Body that fit around the selected location of the wheelchair frame and are secured together with two bolts. The Cap is drilled with two countersunk unthreaded boltholes. The Body has two threaded boltholes and an axial hole that holds the threaded half of a Swivel Clamp. The outer face of the Frame Clamp Inner Piece is machined with circular grooves.
The selected location where the Frame Clamp Inner Piece will be attached should be accessible from both the outside and the inside of the wheelchair frame. About 2" to 2 1/2" of wheelchair frame tubing must be clear for attachment of the Frame Clamp.
Common Round Sizes
Common sizes of round tubing found on wheelchair frames are listed below, along with the part code for the Standard Frame Clamp Inner Piece that will fit.
| Common Round Sizes of Frame Clamp Inner Pieces | |
| Tube diameter | Part Code |
| 7/8" | UFC875IP |
| 1" | UFC1000IP |
| 1 1/8” | UFC1125IP |
| 1 1/4" | UFC1250IP |
| 1 1/2" | UFC1500IP |
| 2" | UFC2000IP |
| 1" with only 1 1/4" clear length | UFC1000IPMOD |
The UFC1000IPMOD is a modified version of the 1” Frame Clamp Inner Piece available for situations when less than three inches of wheelchair frame tubing are clear for attachment. The Modified 1” Round Frame Clamp Inner Piece requires only 1 1/4" clear length of wheelchair frame tubing.
Square and Rectangular Sizes
Common sizes of square and rectangular tubing found on wheelchair frames are listed below, along with the part code for the Standard Frame Clamp Inner Piece that will fit.
| Square or Rectangular Frame Clamp Inner Pieces | |
| Tube dimensions | Part Code |
| 1" x 1" | UFC1000SIP |
| 3/4" x 1 1/2" | UFCRTIP |
| 1 3/8" x 2 1/4" | UFCSTIP |
| Variable 1"-3" x 1"-3" | UFCMFIP (for assessment only) |
The Frame Clamp Inner Piece Multiple Fit (UFCMFIP is a four-piece assessment tool that will fit a wide range of square or rectangular tubing from 1" to 3" in either dimension.
The UFCMFIP cannot be used on wedge shaped or round tubing. It is very important that the bolts in the Multiple Fit Inner Piece are screwed in at least 8 turns before they pull tight, however the bolt ends must not touch the bottom of the threaded holes. Different lengths of bolts will be needed to span the full size range of the UFCMFIP. The bolts must be tightened evenly. The UFCMFIP is not intended for permanent installation with a mounting assembly and is best used only for assessment purposes.
Adapter Sleeves
Round tubing sizes between any Standard sizes or below 7/8” diameter are fitted using Adapter Sleeves. Rectangular and Square sizes between Standard sizes, and some non-Standard tube shapes are fitted using Adapter Sleeves.
The available Standard sizes of round Adapter Sleeves are:
- 7/8 inch to 3/4 inch
- 1 inch to 3/4 inch
- 1 inch to 7/8 inch
- 1 1/2 inch to 1 1/8 inch
- 11/2 inch to 11/4 inch
Right-angle Adapter Sleeves for use on square and rectangular tubes are available in the following Standard sizes:
- 1 inch to 7/8 inch
- 1 inch to 3/4 inch
- 1 3/8 x 2 1/4 inch to 1 x 2 inch
- 1 3/8 x 2 1/4 inch to Oval
Adapter Sleeves are available in custom sizes on special order. Contact Daedalus Technologies, Inc., for more information.
Adapter sleeves may not be used in Side Mount or Front Side Mount Inner Pieces, or with certain wheelchair model specific Frame Clamp Inner Pieces.
Inner Piece Adapter
The Inner Piece Adapter (IPA) is a DAESSY component that can be bolted to any flat surface with two 1/4" holes exactly 1 1/2" apart. The outer face of the Inner Piece Adapter is machined with circular grooves that interface with the outer components of the Frame Clamp Assembly. The IPA is an extremely versatile component that is used in numerous ways to solve difficult mounting applications.Side Mount Sizes
When a seat pan restricts access to the upper edge of the wheelchair frame tubing, it may be possible to use a Side Mount Frame Clamp Inner Piece, which requires no clearance on the topside of the tube and only 1 1/4” clearance on the bottom side. Side Mount Frame Clamps consist of an unthreaded Cap and a threaded Body, which are often silver in colour, and an Inner Piece Adapter that is black. The Side Mount Cap and Side Mount Body each have a cutout, or ‘jaw’, which seats on the wheelchair frame. This cutout is offset from the axis center of the Side Mount Inner Piece, requiring no clearance on the topside of the wheelchair tubing.
There are two styles of Side Mount Inner Pieces. The standard style, UFCxxxxSMIP, has a Side Mount Cap and Side Mount Body of equal size held together with three bolts that can only be accessed from the interior of the wheelchair frame. An Inner Piece Adapter bolts to the Side Mount Body to provide an interface with the outer components of the Frame Clamp Assembly. If the interior of the wheelchair is not accessible a Front Side Mount Inner Piece (xxxxFSMIP) is available.
Side Mount Frame Clamp Inner Pieces are also available to fit elliptical tubing,
| Side Mount Frame Clamp Inner Pieces | ||
| Wheelchair tube Diameter | Side Mount Inner Piece | Front Side Mount Inner Piece |
| 7/8" | UFC875SMIP | 875FSMIP |
| 1" | UFC1000SMIP | 1000FSMIP |
| Elliptical | UFCOVSMIP | |
Bolt-on Adapters
Some wheelchairs do not have tubing onto which a Frame Clamp Inner Piece can be attached. A Bolt-on Adapter may attach to partially accessible frame tubing or pre-existing boltholes in the body of the wheelchair.
| Standard Bolt-on Adapter Part Code | |
| Multi-hole 3" Bolt-on Adapter with Inner Piece Adapter | MH3/IPA |
| Multi-hole 3" Round Tube Bolt-on Adapter with Inner Piece Adapter | MH3R/IPA |
| Multi-hole 2" Bolt-on Adapter with Inner Piece Adapter | MH2/IPA |
| Centre Multi-hole 3" Adapter with Inner Piece Adapter | CM3/IPA |
Both the Multi-hole 3" Bolt-on Adapter and the Multi-hole 3" Round Tube Bolt-on Adapter have a row of seven countersunk unthreaded holes for attachment to a variety of different wheelchairs. The seven boltholes are spaced 1/2" centre to centre with a distance of 3" from the first to the last hole. The Inner Piece Adapter (IPA) can be affixed wherever necessary on the MH3 Adapter along the two rows of threaded boltholes. The CM3/IPA has the unthreaded countersunk holes in the centre row of the array. The Multi-hole 2" Bolt-on Adapter has a shorter overall length with a row of five countersunk holes to bolt to the wheelchair frame and two rows of five threaded holes where the IPA can be attached.
In situations where a Standard Bolt-on Adapter cannot be used a custom Bolt-on Adapter can often be made, contact Daedalus Technologies, Inc for information.
[GO TO: Determining the Frame Clamp Size]
[GO TO: Frame Clamp Outer Pieces] | [GO TO: Connecting Frame Clamp Components]
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