# Patent

## Title
Adjustable toe suspension arm

## Abstract

The present embodiments provide an adjustable toe suspension arm for a vehicle. The suspension arm includes a main suspension bracket coupled to the vehicle's chassis. An outer swing bracket is pivotably coupled to the main suspension bracket. An adjustment mechanism is coupled to the main suspension bracket. A sliding nut is coupled to the adjustment mechanism. A portion of the sliding nut is contact with the outer swing bracket. When the adjustment mechanism is manipulated, the sliding nut moves to rotate the outer swing bracket with respect to the main suspension bracket.

## Background
TECHNICAL FIELD
The disclosed embodiments related generally to vehicles and, more particularly to an adjustable toe suspension arm for a vehicle.
BACKGROUND OF THE EMBODIMENTS
This suspension arm type is widely used in the design of many vehicles and especially remote control vehicles for its simplicity, strength, and cost. The means of setting the vehicles tracking characteristic or “toe” is typically achieved by integrally choosing the angle of the tire's tracking by either the inboard hinge where the suspension arm pivots at the vehicle chassis or the outboard hinge where the suspension arm hinges with a component that houses an axle, bearings, and ultimately the tire. Adjustment of the “toe” in this assembly is achieved by changing either one single component or the mounting location of one or more components. With the use of this invention the “toe” characteristic is easily adjustable on the vehicle in a wide degree range both angling the driving tire toward and away from the vehicle chassis by the use of a simple screw driver. This invention allows the “toe” characteristic to be easily and quickly adjustable providing greater control of the vehicle to the radio operator of a remote control vehicle.
SUMMARY OF THE EMBODIMENTS
In an embodiment, an adjustable toe suspension arm for a vehicle is provided. The suspension arm includes a main suspension bracket coupled to the vehicle's chassis. An outer swing bracket is pivotably coupled to the main suspension bracket. An adjustment mechanism is coupled to the main suspension bracket. A sliding nut is coupled to the adjustment mechanism. A portion of the sliding nut is contact with the outer swing bracket. When the adjustment mechanism is manipulated, the sliding nut moves to rotate the outer swing bracket with respect to the main suspension bracket.
In an embodiment, a method of adjusting a vehicle's tracking is provided. The method includes coupling a main suspension bracket to the vehicle's chassis. The method also includes pivotably coupling an outer swing bracket to the main suspension bracket. The method also includes coupling an adjustment mechanism to the main suspension bracket. The method also includes coupling a sliding nut to the adjustment mechanism, wherein a portion of the sliding nut is in contact with the outer swing bracket. The method also includes manipulating the adjustment mechanism to move the sliding nut to rotate the outer swing bracket with respect to the main suspension bracket.
In an embodiment, an adjustable toe suspension arm for a vehicle is provided. The suspension arm includes a main suspension bracket coupled to a vehicle chassis. An outer swing bracket is pivotably coupled to the main suspension bracket. An adjustment mechanism is operably coupled to the main suspension bracket. An actuating mechanism is coupled to the adjustment mechanism. A portion of the actuating mechanism is in contact with the outer swing bracket. When the adjustment mechanism is manipulated, the actuating mechanism moves to rotate the outer swing bracket with respect to the main suspension bracket.
In an embodiment, a method of adjusting a vehicle's tracking is provided. The method includes coupling a main suspension bracket to a vehicle chassis. The method also includes pivotably coupling an outer swing bracket to the main suspension bracket. The method also includes coupling an adjustment mechanism to the main suspension bracket. The method also includes coupling an actuating mechanism to the adjustment mechanism, wherein a portion of the actuating mechanism is in contact with the outer swing bracket. The method also includes manipulating the adjustment mechanism to move the actuating mechanism to rotate the outer swing bracket with respect to the main suspension bracket.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded view of a suspension arm formed in accordance with an embodiment.
FIG. 2A is a perspective view of a main suspension bracket.
FIG. 2B is a top view of the main suspension bracket shown in FIG. 2A.
FIG. 2C is a bottom view of the main suspension bracket shown in FIG. 2A.
FIG. 3A is a perspective view of an outer swing bracket.
FIG. 3B is a top view of the outer swing bracket shown in FIG. 3A.
FIG. 3C is a bottom view of the outer swing bracket shown in FIG. 3A.



DETAILED DESCRIPTION OF THE EMBODIMENTS
Sliding Nut is threaded roughly half way down the entire length of the Drive Screw's threads so that approximately equal portions of the Drive Screw are on each side of the Sliding Nut. Drive Screw is housed in a fixed location in the Main Suspension Bracket so as when the Drive Screw is turned, it does not change location relative to the Main Suspension Bracket. With the Drive Screw in its housing, the Sliding Nut locates in a slotted channel parallel to the Drive Screw. Affixing the Outer Swing Bracket to the Main Suspension Bracket using simple screws and nuts encloses and secures the Drive Screw and Sliding Nut mechanism. The remaining portion of the Sliding Nut locates into a Pocket in the Outer Swing Bracket that is elongated only slightly in a direction perpendicular to the Drive Screw.
With the parts assembled a screw driver tool is placed thru a hole in the Main Suspension Bracket to gain access and engage movement to the Drive Screw. Turning the Drive Screw in its fixed location only allows for rotational movement only for the Drive Screw. The turning of the Dive Screw and its thread engagement to the Slide Nut causes the Sliding Nut to move up or down the path of travel on the threads of the Drive Screw depending on which way the Drive Screw is rotated. Consequently this causes the Slide Nut to change its location within its mating channel in the Main Suspension Bracket and the mating pocket in the Outer Swing Bracket. As the Sliding Nut moves with the rotational movement of the Drive Screw, the Sliding Nut movement along a straight path rotates the Outer Swing, changing the angle of the outboard hinge where the component that houses an axle, bearings, and ultimately the tire is located effectively resulting in a change of the vehicles track or “toe”.

## Claims

1. An adjustable toe suspension arm for a vehicle comprising:
a main suspension bracket coupled to vehicle chassis, the main suspension bracket comprising a mating channel formed therein;
an outer swing bracket pivotably coupled to the main suspension bracket, the outer swing bracket comprising a mating pocket formed therein;
an adjustment mechanism coupled to the main suspension bracket, the adjustment mechanism comprising a drive screw extending through the mating channel of the main suspension bracket; and
a sliding nut threaded to the drive screw, wherein a portion of the sliding nut is positioned within the mating pocket of the outer swing bracket;
wherein, when the adjustment mechanism is manipulated, the sliding nut moves to rotate the outer swing bracket with respect to the main suspension bracket.

2. The adjustable toe suspension arm of claim 1, wherein a portion of the outer swing bracket is operatively coupled to a tire of the vehicle such that rotation of the outer swing bracket changes an orientation of the tire with respect to the vehicle chassis.

3. The adjustable toe suspension arm of claim 1, wherein the vehicle is a radio controlled vehicle.

4. The adjustable toe suspension arm of claim 1, wherein the drive screw is rotated to move the sliding nut.

5. A method of adjusting a vehicle's tracking, the method comprising:
coupling a main suspension bracket to a vehicle chassis, wherein the main suspension bracket includes a mating channel formed therein;
pivotably coupling an outer swing bracket to the main suspension bracket, wherein the outer swing bracket includes a mating pocket formed therein;
coupling an adjustment mechanism to the main suspension bracket, wherein the adjustment mechanism includes a drive screw extending through the mating channel of the main suspension bracket;
threading a sliding nut to the drive screw, wherein a portion of the sliding nut is positioned within the mating pocket of the outer swing bracket; and
rotating the drive screw to move the sliding nut to rotate the outer swing bracket with respect to the main suspension bracket.

6. The method of claim 5, wherein a portion of the outer swing bracket is operatively coupled to a tire of the vehicle, the method further comprising manipulating the adjustment mechanism such that rotation of the outer swing bracket changes an orientation of the tire with respect to the vehicle chassis.

7. The method of claim 5 further comprising adjusting the tracking of a radio controlled vehicle.