The present relates to couplers, such as electric, pneumatic and hydraulic couplers, and more particularly to a coupler capable of planar movement.
Vehicles are used with various types of implements. Implements are affixed to the vehicle by means of a hitch. A first part of a hitch is affixed to the vehicle, and a complementary part is affixed to the implement. The part of the hitch on the vehicle may further be designed so as to assist in lifting the implement from a resting position.
In addition to the hitch for allowing lifting and securing of the implement to the vehicle, certain implements require power to function. Power from the vehicle is generally provided to the implement by means of one or several couplers, adapted for engaging a corresponding power coupler of the implement.
However, precise positioning of the coupler of the vehicle with respect to the power coupler of the implement is not always simple, and sometimes not possible. When the coupler of the vehicle is not precisely aligned with the coupler of the implement, premature wear is imposed on engagement mechanisms of the coupler and of the power coupler of the implement, and on the power couplers themselves. Furthermore, during operation of the implement, impact may cause relative movement of the implement with respect to the hitch of the vehicle, resulting in an impact on the coupler of the vehicle and of the power coupler of the implement, and partial or complete disengagement.
There is therefore a need for a coupler that alleviates the aforementioned problems.
The present relates to couplers, and more particularly to couplers capable of planar movement.
In a first aspect, the present provides a position adjustable coupler comprising a connector and a securing mechanism. The securing mechanism is adapted for fixedly securing the connector to a frame. The securing mechanism comprises a position adjustment mechanism for allowing planar movement of the connector within the securing mechanism.
In another aspect, the present provides a position adjustable coupler comprising a connector, a securing mechanism and a compression adjustment mechanism. The securing mechanism is adapted for fixedly securing the connector to a frame. The securing mechanism comprises a position adjustment mechanism for allowing planar movement of the connector within the securing mechanism. The compression adjustment mechanism adjusts pressure and position received by the connector.
In yet another aspect, the present provides a hitch comprising a position adjustable coupler.
In the following description, the following drawings are used to describe and exemplify the present position adjustable coupler and hitch:
The present relates to couplers, and more particularly to couplers to be used on vehicles equipped with a hitch.
The industry of vehicles adapted to receive implements, and implements themselves is quite vast. It goes from residential to commercial and industrial applications. Examples of vehicles adapted to receive implements include tractors, trucks, all terrain vehicles and heavy machinery. The variety of implements is very wide; each implement corresponding to a particular task to be performed by the vehicle. Some of those implements require power provided by the vehicle to function. Various types of power may be required by the implement: hydraulic power, pneumatic power, electrical power and motion generated by an engine of the vehicle.
To convey hydraulic, pneumatic and electric power from the vehicle to the implement, corresponding couplers are used. Couplers may be connected automatically, but such an automatic connection requires perfect alignment to avoid damaging the connectors, which is not always possible or feasible. Furthermore, during operation, the implement may encounter resistance, which may result in impact on the implement and on the couplers conveying power from the vehicle. The impact may be sufficient to damage the couplers, to disengage the couplers, or to partially disengage the couplers resulting in a loss of power at the implement, wear and breaking. Thus impact on the implement often results in premature wear of the couplers.
To alleviate these problems, the present provides a coupler capable of self-adjustment. The present coupler is adapted to be installed on a vehicle hitch and/or on an implement hitch.
Reference is now made to
Reference is now made to
For receiving the position adjustment mechanism 22, the securing mechanism 20 may be composed of one or a plurality of affixing members 24a, 24b, 24c, 24d and 24e. Each of the affixing members 24a, 24b, 24c, 24d and 24e are adapted to be fixedly secured to the frame 14 of the implement hitch 10 by any known means of securing to a frame, such as for example screws, nuts and bolts, welding, etc.
The affixing members 24a, 24b, 24c, 24d and 24e each define a perimeter 26 of an aperture. At least one of the affixing members, preferably located substantially in a middle of the group of affixing members, i.e. affixing member 24c, defines a larger perimeter than the other affixing members 24a, 24b, 24d and 24e. When affixed to the frame 14, the affixed member 24c with its larger perimeter defines with the other affixing members 24a, 24b, 24d and 24e, a slot for receiving the position adjustment mechanism 22. The affixing members 24a, 24b, 24c, 24d and 24e may be fixed together by means of screws, bolts, or any other known means for fixing together plural members.
Although the slot of the securing mechanism for receiving the position adjustment mechanism 22 is described herein as being provided by a plurality of affixing members with at least one affixing member having an aperture of larger perimeter, the present coupler is not limited to such an implementation. Any alternative combination of components for providing an aperture defined by a slot in which the position adjust mechanism 22 is received and allowed planar movement therein is also encompassed.
The position adjustment mechanism 22 allows planar movement of the connectors 16 and guiding pins 18 within the securing mechanism 20. For doing so, the position adjustment mechanism 22 is installed in the slot defined by the affixing members 24a, 24b, 24c, 24d and 24e. The position adjustment mechanism 22 has a perimeter defining a shape similar to but smaller than the perimeter of the affixing member 24c, thus smaller than the largest aperture of the affixing members. Furthermore, to ensure that the position adjustment mechanism 22 remains within the securing mechanism 20, its perimeter is larger than the perimeter of the affixing members 24a and 24e forming an exterior of the securing mechanism 20.
Thus the position adjustment mechanism 22 moves in a plane defined by the affixing members in the aperture of the affixing member 24c, while being retained in the securing mechanism 20 by the other affixing members 24a, 24b, 24d and 24e. The position adjustment mechanism 22 may be a plate, of a similar shape as the perimeter of the largest aperture of the affixing members. However, the position adjustment mechanism 22 could alternatively be of a different shape than the perimeter 26 of the affixing members, while still being adapted to be installed within the securing mechanism, and move in the plane defined therein.
The connectors 16 and guiding pins 18 are fixed to the position adjustment mechanism 22 by any known means of fixing connectors to a surface, such as for example bonding, clipping, welding, mechanical attachment, etc. Alternately, the connectors 16 and guiding pins 18 could be affixed to the position adjustment mechanism 22 in such a manner that the position adjustment mechanism surrounds a section of the connectors. The position adjustment mechanism 22 could have various shapes, and not necessarily be flat. The position adjustment mechanism could be made of metal, plastic, composite material, brass, or any other material capable of withstanding physical constraints applied thereon. Furthermore, the position adjustment mechanism 22 is not limited to receiving the connectors 16 and guiding pins 18 in a linear arrangement as shown, but could alternately receive the connectors 16 and guiding pins 18 in a square arrangement, in a matrix arrangement, in a symmetric or asymmetrical arrangement, etc.
Reference is now made to
Reference is now made to
Although the present compression adjustment mechanism 28 has been depicted with a pair of sliding pins 30, springs 32, flat washers 34 and securing pins 36, the present coupler is not limited to such an implementation. The present coupler could also use other means of compression adjustment than springs, such as for example resilient materials, shape memory alloys, hydraulic means, pneumatic means, etc.
The guiding pins 18 could alternatively be replaced by a greater number or lesser number of guiding pins. Alternatively, the guiding pins 18 could be replaced by a single guiding pin of a shape preventing rotation of the connectors 16, while assisting in guiding the connection of the coupler 12.
Reference is now made to
The present coupler has been described by way of preferred embodiments. It should be clear to those skilled in the art that the described preferred embodiments are for exemplary purposes only, and should not be interpreted to limit the scope of the present coupler. The scope of the present coupler should be defined by reference to the appended claims, which clearly delimit the protection sought.