DESCRIPTION OF THE DRAWINGS
The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying illustrations, wherein:
FIG. 1 is a right side perspective view of the vehicle mounted bicycle rack of the present invention;
FIG. 2 is a left side perspective view of the rack of FIG. 1;
FIG. 3 is a section view taken along line 3-3 in FIG. 1;
FIG. 4 is a section view taken along line 3-3 in FIG. 1;
FIG. 5 is a section view taken along line 3-3 in FIG. 1 showing the rack in a further inclined position and with the stop element removed;
FIG. 6 is an exploded view of the rack of FIG. 1;
FIG. 7 is an exploded and enlarged view of the top plate portion of the rack shown in FIG. 6;
FIG. 8 is a perspective view of the hollow support tube showing one embodiment of its internal construction;
FIG. 9 is a section view of the spring lock of FIG. 7;
FIG. 10 is a perspective view of the top plate portion of the rack with a side portion cut away to show one of the internal extruded plastic sleeves in which the support arms are mounted;
FIG. 11 is a perspective view of the top plate again showing the location of the internal extruded plastic sleeves of FIG. 10;
FIG. 12 is a partial perspective view of a support arm and anti-sway saddle and stabilizer;
FIG. 13 is a section view of the anti-sway saddle and stabilizer of FIG. 12 taken along lines 13-13, showing the stabilizer in its vertical, unlocked position; and,
FIG. 14 shows the anti-sway saddle and stabilizer of FIG. 13 in its locked position.
FIG. 15 is an exploded view of a second embodiment of the present invention including a reinforcing rod.
FIG. 16 is a bottom partial perspective view showing the reinforcing rod in place within the hollow support tube.
FIG. 17 is a partial top perspective view showing the reinforcing rod in place within the hollow support tube.
FIG. 18 is a perspective view of a midline section of the second embodiment.
DETAILED DESCRIPTION
Referring initially to FIGS. 1 and 2, a bicycle support rack 10 including a hitch receiver bar 12 adapted to be mounted in a hitch receiver mounted on the rear of a vehicle is disclosed. As will be understood, a conventional hitch receiver bar slips into a cavity formed by a hitch receiver and is held in place by means of bolts or other devices typically extending through aligned holes in both the hitch receiver and the hitch receiver bar. Referring additionally to FIGS. 3-6, bicycle support rack 10 further includes an upright hollow tube 14 pivotally mounted to hitch receiver bar 12 by means of laterally extending member 16 which, in one embodiment, may comprise a conventional nut and bolt extending through a pair of beveled washers 18 which conform to the curved outer surface of tube 14. In a preferred embodiment, tube 14 is formed from aluminum, but, it will be understood that other metals or plastic or carbon fiber may also be used to form the tube.
Tube 14 extends upwardly to top plate 20 where it is pivotally connected to a pair of flanges 22a and 22b by means of laterally extending member 24 which may comprise a nut and bolt combination.
Positioned within upright hollow tube 14 is rod 26. Rod 26 extends between hitch receiver bar 12 and flanges 22a and 22b and is mounted to pivot with respect thereto by means of laterally extending member 28 which may comprise a lower pivot pin, and upper laterally extending member 30 which may also comprise a nut and bolt combination. Member 28 may be a free floating pin which is held in place by the interior side walls 29a and 29b of Tube 14 (FIG. 8). As so mounted, rod 26 and tube 14 remain substantially parallel to each other at all times while the bicycle support rack is pivoted from its near upright position to an inclined position as will be seen in FIGS. 3-5. Tube 14 and rod 26 form the long edges of a parallelogram, the top and bottom edges of which are formed by flanges 22a and 22b and hitch receiver bar 12, respectively. Thus, it will be understood that the distances between top pins 22 and 24 and bottom pins 16 and 28 always remain substantially the same, thus causing top plate 20 to maintain its substantially parallel orientation with respect to hitch receiver bar 12.
A stop block 32 is shown mounted within tube 14 near its base. As best shown in FIG. 4, as bicycle support rack 10 pivots rearwardly with respect to the vehicle in which it is mounted, block 32 eventually comes in contact with both the forward internal edge of tube 14 and the forward edge of rod 26 so as to prevent further rearward pivoting of the rack. It will be understood that when one or more bicycles are mounted on the rack, stop block 32 could prevent the downwardly extending bicycles from contacting the ground. It is contemplated, however, as shown in FIG. 5, that block 32 may be removed to allow rack 10 to pivot even lower to provide even greater access to the rear of a vehicle. Stop block 32 includes an upwardly extending flange in its bottom left corner as seen in FIG. 3 which defines a slot which is adapted to slide onto internal flange 34 (FIG. 8) of hollow tube 14 where it is held in place by the proximity of the upper surface of hitch receiver bar 12. It will be understood that the stop block 32 may be removed from within the tube by removing nut and bolt combination 16 and rotating the rack such that the bottom of tube 14 is exposed and allowing the stop block to be withdrawn from within the tube.
Referring to FIG. 6, a conventional pull pin 36 is shown mounted to extend through the sidewalls of tube 14 and into pull pin hole 40 in flange 22a. As best seen in FIG. 6, pull pin 36 includes a handle mounted on a rod which carries a spring such that pull pin 36 is normally biased into hole 40 when the support rack is in its upright position thus preventing rearward pivoting of the support rack. When it is desired to pivot the rack rearwardly, the pull pin handle is grasped and pulled outwardly to remove it from hole 40 which allows the support rack to pivot.
As best shown in FIG. 7, flange 22a is shaped differently from flange 22b whereby flange 22a includes a lower shoulder portion in which pull pin hole 40 is formed. As can be seen in FIG. 2, the pull pin handle is positioned adjacent flange 22b while its distal end extends through enlarged flange 22a.
Double shim 38 is mounted on the outer surface of tube 14 to receive both the shaft of pull pin 36 and nut and bolt combination 24. Double shim 38 may be formed of a somewhat rigid plastic material. When mounted on tube 14, the shim provides a pair of flat planes which make planar contact with the inner surfaces of flanges 22a and 22b.
The construction and mounting of one embodiment of top plate 20 is best seen with reference to FIG. 7. Top plate 20 includes a cast element 42 which includes a pair of nut bar receiving slots 44a and 44b, and a pair of support arm receiving slots 46a and 46b. Nut bars 48a and 48b each including three threaded holes 50a and 50b spaced to correspond to bolt receiving holes 52a and 52b in outwardly extending flanges 54a and 54b of elements 22a and 22b. To connect top plate 20 to flanges 52, nut bars 48a and 48b are slipped within slots 44a and 44b and bolts 56a and 56b are inserted upwardly through holes 52a and 52b and threaded into bolt receiving holes 50a and 50b. Conventional lock washers 58 may be used to prevent inadvertent loosening. It will be understood that the use of this nut bar construction eliminates the need to drill possibly weakening holes into the cast top plate 20.
Nut bars 48a and 48b are held in place by end caps 60 and 62, which are in turn held in place on top plate 20 by conventional long bolts (not shown) extending through bolt mounts 64 in end cap 60 into conventional nuts held in nut pockets 66 provided in end cap 62.
Load support arms 68a and 68b are removably mounted in top plate 20 by inserting them through support arm receiving slots 46a and 46b. The load support arms each include holes 70a and 70b (FIG. 6) adapted to receive the pin ends 72a and 72b of spring loaded support arm lock 74.
Referring additionally to FIGS. 9-11, spring loaded arm lock 74 is shown to include a central tube portion 76, an internal spring 78, and a pair of pins 80 cooperatingly mounted with spring 78 and extending outwardly of each end of tube 76. Finger grips 82 are provided on each end of pin 80 such that they may be easily gripped and moved laterally inward to compress spring 78.
End cap 62 includes an arched fitting 84 in which the tube portion of arm lock 74 is mounted such that the pin ends 72a and 72b extend outwardly through guides 86a and 86b and thence into armholes 70a and 70b when the support arms 68a and 68b are inserted into receiving slots 46a and 46b, respectively. Spring 78 biases pin ends 72a and 72b within the armholes 70a and 70b to hold the arms in place within the top plate. However, it will be understood that simple movement of the finger grips 82 toward each other will withdraw pin ends 72a and 72b from the armholes releasing the support arms.
FIGS. 10 and 11 disclose extruded plastic sleeves 88a and 88b which may be inserted within the arm receiving slots 46a and 46b to prevent metal to metal contact between the load supporting arms and the top plate.
Referring additionally to FIGS. 12-14, an anti-sway device 90 is shown mounted on a support arm 68 to reduce swaying motion of bicycles mounted on the support rack while a vehicle is in motion. The anti-sway device includes a saddle portion 92 which may be molded from relatively soft rubber and include a downward curvature formed by a plurality of upstanding fingers adapted to receive the top tube of a bicycle. Saddle portion 92 is mounted and held by saddle support 94 which is preferably made of a somewhat firmer plastic-like material. Both saddle 92 and saddle support 94 include a central opening 96 adapted to receive a support arm 68.
Downwardly extending from saddle support 94 is an anti-sway stabilizer 98 which includes a lower portion 100 and a ball-like upper portion 102.
As best seen in FIGS. 13 and 14, ball 102 includes a flat upper portion 104. In FIG. 13, anti-sway stabilizer 98 is substantially vertical in orientation such that flat upper portion 104 lies adjacent support arm 68. In FIG. 14, anti-sway stabilizer 98 is rotated to a locked position wherein the shoulder of ball-like upper portion 102 is pressed against the lower portion of arm 68 thus preventing movement of the anti-sway stabilizer along arm 68. When not in the locked position, stabilizer 90 may be moved longitudinally along arm 68 so that it may be positioned at appropriate spacing from other anti-sway stabilizers mounted on the bicycle support arms. Strap receiving buttons 106 are provided on both the saddle support 94 and the lower portion of the anti-sway stabilizer 100 to receive conventional slotted straps which may be wrapped around the bicycle being carried by the support arms to hold it in place.
Turning now to FIGS. 15-18, a second embodiment of the present invention is disclosed to include an internal metal reinforcing beam 110 which is shown to be of rectangular cross-section. As also shown in FIGS. 16-18, beam 110 is positioned within hollow tube 14 forward of rod 26 and held in place by bottom pin 16 and top pin 24 which extend through associated holes 24a and 16a. Pull pin 36 will also be seen to extend through associated holes 36a formed on each lateral side of beam 110.
Support beam 110 includes a pair of flanges 112a and 112b connected to its bottom end. As shown, flanges 112a and 112b are generally rectangular in shape and extend rearwardly to hold floating pin 28 in place between them.
Support beam 110 is provided within tube 14 to strengthen and improve the durability of support rack 10 thus allowing the rack to carry loads which might otherwise overburden relatively light weight tube 14. Because both tube 14 and support beam 110 are pinned by the same elements 16 and 24, it will be understood that beam 110 pivots with hollow tube 14 when the support rack is raised or lowered to provide access to the rear of the carrying vehicle. In the preferred embodiment, support beam 110 is formed of steel but it is contemplated that the support beam may also be formed from other metals which are capable of providing the support sought.
It will also be understood that in this embodiment, stop block 32 may be eliminated since when the rack pivots rearwardly the support beam 110 and rod 26 move toward each other such that when they come in contact with each other, further rearward pivoting rotation is prevented.
While the preferred embodiment of the invention has been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
Patent Application
20080093404
