Fairlead assembly for a vehicle mounted winch
10450172 ยท 2019-10-22
Inventors
Cpc classification
B66D1/00
PERFORMING OPERATIONS; TRANSPORTING
B66D2700/0191
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
A fairlead assembly for use with a vehicle-mounted winch and cable, the fairlead assembly is adapted to guide and control the cable as it is spooled in or out by the winch. The fairlead assembly is attached to the vehicle, and comprises a pair of horizontal rollers positioned in parallel and separated by a cable guide space, along with a pair of vertical rollers positioned to the right and left of the cable guide space. The horizontal and vertical rollers control the vertical and horizontal motion of the cable within the cable guide space. The vertical and horizontal rollers may have coplanar central axes, allowing the fairlead assembly to have a reduced profile. The vertical rollers may also each comprise a cable control groove to guide and control the horizontal and vertical motion of the cable when the winch and cable are employed to execute a sideways pull.
Claims
1. A fairlead assembly for use with a winch and cable mounted on a motor vehicle, the motor vehicle having a front, a side, and a fairlead mounting point disposed on the front of the vehicle to which the fairlead assembly is secured, the winch is adapted to selectively spool in or spool out the cable, the cable is adapted to be attached to an object serving as an anchor point, the fairlead assembly comprising: an upper horizontal roller and a lower horizontal roller each having a first end, a second end, and a central axis, the upper and lower horizontal rollers are arranged in parallel and are separated by a cable guide space, the cable guide space is adapted to allow the cable to pass therethrough, and the upper and lower horizontal rollers are adapted to control vertical motion of the cable; and a first vertical roller and a second vertical roller each having a top end, a bottom end, and a central axis, the first vertical roller is positioned proximate to the first end of the first and second horizontal rollers and the second roller is positioned proximate to the second end of the first and second horizontal rollers, such that the first and second vertical rollers control horizontal movement of the cable as the cable slides horizontally within the cable guide space, whereby the central axes of the first and second vertical rollers are coplanar with the central axis of; wherein the upper and lower horizontal rollers having a longer length than the first and second vertical rollers.
2. The fairlead assembly as described in claim 1, wherein: the cable guide space has a height which is equal to a distance between the upper and lower horizontal rollers; and the first and second vertical rollers each have a length which is substantially equal to the height of the cable guide space.
3. The fairlead assembly as described in claim 2, wherein the upper and lower horizontal rollers and the first and second vertical rollers each have a diameter, and the diameters of the upper and lower horizontal rollers are substantially equal to the diameters of the first and second vertical rollers.
4. The fairlead assembly as described in claim 3, wherein the first and second vertical rollers each have a cable control groove adapted to control the vertical movement of the cable as the cable contacts the first or second vertical rollers.
5. The fairlead assembly as described in claim 4, wherein the first vertical roller extends inwardly into the cable guide space past the first end of each of the upper and lower horizontal rollers, and the second vertical roller extends inwardly into the cable guide space past the second end of each of the upper and lower horizontal rollers.
6. The fairlead assembly as described in claim 5, further comprising: a mounting frame having two pairs of horizontal brackets to which the upper and lower horizontal rollers are rotatably attached, and two pairs of vertical brackets to which the first and second vertical rollers are rotatably attached, the mounting frame is adapted to be attached to the fairlead mounting point.
7. The fairlead assembly as described in claim 6, wherein the mounting frame further has an upper horizontal plate which is positioned above the upper horizontal roller and projects forwardly, and a lower horizontal plate which is positioned below the lower horizontal roller and projects forwardly.
8. A method for performing a sideways pull using a winch and a cable, the winch is adapted to selectively spool in or spool out the cable, the winch is attached to a motor vehicle having a front and a side, the cable is selectively attachable to an anchor point facing the side of the motor vehicle, the method comprising the steps of: providing a fairlead assembly adapted to be attached to the front of the vehicle, having an upper horizontal roller, a lower horizontal roller, the upper and lower horizontal rollers each have a first end, a second end, a diameter, a surface, and a central axis, the upper and lower horizontal rollers are arranged in parallel and are separated by a cable guide space, a first vertical roller and a second vertical roller each having a diameter, a surface, and a central axis, the first vertical roller is positioned adjacent to the cable guide space proximate to the first end of each of the upper and lower horizontal rollers, the second vertical roller is positioned adjacent to the cable guide space proximate to the second end of each of the upper and lower horizontal rollers, the central axes of the upper and lower horizontal rollers are substantially coplanar with the central axes of the first and second horizontal rollers, and the diameters of the upper and lower horizontal rollers are substantially equal to the diameters of the first and second vertical rollers such that the surfaces of the upper and lower horizontal rollers and the first and second vertical rollers are coplanar with a forward vertical plane; attaching the cable to the anchor point; guiding the cable through the cable guide space; bending the cable towards anchor point and away from the side of the vehicle, and wrapping the cable around the surface of the first or second vertical roller at a bend point intersecting the forward vertical plane; and employing the first or second vertical roller which is in contact with the cable as a fulcrum point, while selectively spooling the cable in or out using; wherein the upper and lower horizontal rollers having a longer length than the first and second vertical rollers.
9. The method as described in claim 8, wherein: the first and second rollers each further have a cable control groove positioned along the surface of the first and second rollers; and the step of employing the first or second vertical roller which is in contact with the cable as a fulcrum point is followed by the step of limiting vertical movement of the cable by retaining the cable within the cable control groove of the first or second vertical roller.
10. A method for performing a sideways pull using a winch and a cable, the winch is adapted to selectively spool in or spool out the cable, the winch is attached to a motor vehicle having a front and a side, the cable is selectively attachable to a towing object facing the side of the motor vehicle, the method comprising the steps of: providing a fairlead assembly adapted to be attached to the front of the vehicle, having an upper horizontal roller, a lower horizontal roller, the upper and lower horizontal rollers each have a first end, a second end, a diameter, a surface, and a central axis, the upper and lower horizontal rollers are arranged in parallel and are separated by a cable guide space, a first vertical roller and a second vertical roller each having a diameter, a surface, and a central axis, the first vertical roller is positioned adjacent to the cable guide space proximate to the first end of each of the upper and lower horizontal rollers, the second vertical roller is positioned adjacent to the cable guide space proximate to the second end of each of the upper and lower horizontal rollers, the central axes of the upper and lower horizontal rollers are substantially coplanar with the central axes of the first and second horizontal rollers, and the diameters of the upper and lower horizontal rollers are substantially equal to the diameters of the first and second vertical rollers such that the surfaces of the upper and lower horizontal rollers and the first and second vertical rollers are coplanar with a forward vertical plane; attaching the cable to the towing object; guiding the cable through the cable guide space; bending the cable towards anchor point and away from the side of the vehicle, and wrapping the cable around the surface of the first or second vertical roller at a bend point intersecting the forward vertical plane; and pulling the towing object towards the motor vehicle by spooling in the cable using the winch, and employing the first or second vertical roller which is in contact with; wherein the upper and lower horizontal rollers having a longer length than the first and second vertical rollers.
11. The method as described in claim 10, wherein: the first and second rollers each further have a cable control groove positioned along the surface of the first and second rollers; and the step of pulling the towing object towards the motor vehicle by spooling in the cable using the winch is followed by the step of limiting vertical movement of the cable by retaining the cable within the cable control groove of the first or second vertical roller which is in contact with the cable.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) In the drawings, like elements are depicted by like reference numerals. The drawings are briefly described as follows.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13) The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, which show various example embodiments. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein. Rather, these example embodiments are provided so that the present disclosure is thorough, complete and fully conveys the scope of the present disclosure to those skilled in the art.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
(14)
(15) The fairlead assembly 10 comprises a mounting frame 12, and a pair of vertical rollers 28 and a pair of horizontal rollers 30, which are attached to the mounting frame 12 and are adapted to guide the cable 130 by controlling the horizontal and vertical motion of the cable 130. The mounting frame 12 is attached to the vehicle 150 at the fairlead mounting point 160. Each of the vertical and horizontal rollers 28, 30 are preferably cylindrical in shape, and are capable of rotating freely about a central axis passing through each of the vertical and horizontal rollers 28, 30. The pair of vertical rollers 28 comprise a first vertical roller 40 and a second vertical roller 60, while the pair of horizontal rollers 30 comprise an upper horizontal roller 80 and a lower horizontal roller 90. The upper and lower horizontal rollers 80, 90 are positioned in parallel and are separated by a space, while the first and second vertical rollers 40, 60 are oriented parallel to each other and are positioned to the right and left of the space between the upper and lower horizontal rollers 80, 90. This space between the vertical and horizontal rollers 28, 30 corresponds to a cable guide space 134, through which the cable 130 passes as it is spooled in and out by the winch 120. As the cable 130 is spooled in and spooled out within the cable guide space 134, the vertical and horizontal rollers 28, 30 are adapted to rotate, thus reducing the friction between the cable 130 and the fairlead assembly 10 and mitigating wear and tear on the cable 130. Furthermore, the first and second vertical rollers 40, 60 are coplanar with the upper and lower horizontal rollers 80, 90, thus giving the fairlead assembly 10 a significantly reduced profile in comparison with prior art roller fairleads which have vertical rollers positioned in front of the horizontal rollers.
(16) Turning to
(17) The fairlead assembly 10 further comprises a first vertical mounting assembly 50, a second vertical mounting assembly 70, an upper horizontal mounting assembly 88, and a lower horizontal mounting assembly 98. The first vertical mounting assembly 50 may comprise a first top bracket 50B and a first bottom bracket 50C bracket positioned opposite to the first top bracket 50B. The first vertical roller 40 is positioned between the first top and bottom brackets 50B, 50C such that the first top end 42 is rotatably attached to the first top bracket 50B and the first bottom end 44 is rotatably attached to the first bottom bracket 50C, allowing the first vertical roller 40 to rotate about its central axis while positioned therebetween. Similarly, the second vertical mounting assembly 70 may comprise a second top bracket 70B and a second bottom bracket 70C positioned opposite to the second top bracket 70B. The second top end 62 and second bottom end 64 of the second vertical roller 60 are rotatably attached to the second top and bottom brackets 70B, 70C respectively, allowing the second vertical roller 60 to rotate about its central axis while positioned between the second top and bottom brackets 70B, 70C. In a preferred embodiment, the vertical shafts 52 of the first and second vertical rollers 40, 60 extend past the first top and bottom ends 42, 44 and the second top and bottom ends 62, 64 to allow the first and second vertical rollers 40, 60 to rotatably attach to the first and second vertical mounting assemblies 50, 70.
(18) The upper horizontal mounting assembly 88 may comprise an upper right bracket 88B and an upper left bracket 88C positioned opposite to the upper right bracket 88B. The upper horizontal roller 80 is positioned between the upper right and left brackets 88B, 88C such that the upper roller first end 82 and the upper roller second end 84 are rotatably attached to the upper right and left brackets 88B, 88C respectively, allowing the upper horizontal roller 80 to rotate about its central axis while positioned therebetween. The lower horizontal mounting assembly 98 may comprise a lower right bracket 98B and a lower left bracket 98C positioned opposite to each other. The lower roller first end 92 and lower roller second end 94 may be rotatably attached to the lower right bracket 98B and lower left bracket 98C respectively, allowing the lower horizontal roller 90 to rotate about its central axis while positioned therebetween. In a manner similar to the vertical shafts 52 of the first and second vertical rollers, the horizontal shafts 100 of the upper and lower horizontal rollers 80, 90 may extend outwards beyond the upper roller first and second ends 82, 84 and the lower roller first and second ends 92, 94 to rotatably attach to the upper and lower horizontal mounting assemblies 88, 98.
(19) Turning now to
(20) Turning now to
(21) The first top bracket 50B and the first bottom bracket 50C are positioned on the first mounting portion 14A, while the second top bracket 70B and second bottom bracket 70C are positioned on the second mounting portion 14B. The first and second vertical rollers 40, 60 are positioned to the right and left of the cable guide space 134 respectively. The horizontal movement of the cable 130 within the cable guide space 134 is controlled by the first and second vertical rollers 40, 60, while the vertical movement of the cable 130 is controlled by the upper and lower horizontal rollers 80, 90. As the cable 130 slides horizontally within the cable guide space 134, the cable 130 may contact either the first or second vertical roller 40, 60 depending on the direction of the horizontal movement. Each of the first and second vertical rollers 40, 60 may have a length which is substantially equal to the distance between the upper and lower horizontal rollers 80, 90, thus ensuring that there are no gaps to the right and left of the cable guide space 134 through which the cable 130 may enter and become snagged or pinched. Furthermore, in certain embodiments, the first and second vertical rollers 40, 60 may extend inwardly towards the cable guide space 134, such that the first and second top ends 42, 62 and the first and second bottom ends 44, 64 overlap the upper and lower horizontal rollers 80, 90 respectively.
(22) In a preferred embodiment, the first and second vertical rollers 40, 60 may further comprise a first cable control groove 48 and a second cable control groove 68 respectively. The first and second cable control grooves 48, 68 may be formed as depressions having a curved aspect, which run along the first vertical roller surface 46 and the second vertical roller surface 66 respectively, in a direction perpendicular to the central axis of each vertical roller. The curved aspect of the first and second cable control grooves 48, 68 allow the cable 130 to be partially retained within the control grooves 46, 68, when the cable 130 would otherwise slide freely across the surface of a standard cylindrical roller. For example, as shown in
(23) Turning to
(24) Turning now to
(25) Moving on to
(26) The coplanar arrangement of the first and second vertical rollers 40, 60 and the upper and lower horizontal rollers 80, 90 further serves to reduce the amount of force transferred to the mounting frame 12 and the fairlead mounting point 160 when the winch executes the sideways pull, by bringing the fulcrum point (as represented by either the first or second vertical rollers 40, 60) closer to the fairlead mounting point 160.
(27) It is understood that when an element is referred hereinabove as being on another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being directly on another element, there are no intervening elements present.
(28) Moreover, any components or materials can be formed from a same, structurally continuous piece or separately fabricated and connected.
(29) It is further understood that, although ordinal terms, such as, first, second, third, are used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein.
(30) Spatially relative terms, such as beneath, below, lower, above, upper and the like, are used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It is understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as below or beneath other elements or features would then be oriented above the other elements or features. Thus, the example term below can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
(31) Example embodiments are described herein with reference to cross section illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, example embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein, but are to include deviations in shapes that result, for example, from manufacturing. For example, a region illustrated or described as flat may, typically, have rough and/or nonlinear features. Moreover, sharp angles that are illustrated may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the present claims.
(32) In conclusion, herein is presented a fairlead assembly for a vehicle mounted winch. The disclosure is illustrated by example in the drawing figures, and throughout the written description. It should be understood that numerous variations are possible, while adhering to the inventive concept. Such variations are contemplated as being a part of the present disclosure.