Height-adjustable spare wheel carrier with Chebyshev linkage

Abstract

An adjustable height spare tire carrier with a Chebyshev linkage is described. An exemplary spare tire carrier is coupled to a vehicle. The spare tire carrier includes a Chebyshev linkage having an output shaft that carries a spare tire of the vehicle. The output shaft is movable between a raised position and a lowered position.

Description

Technical Field

[0001] The present invention relates generally to an adjustable height spare tire carrier and, more particularly, to an adjustable height spare tire carrier having a Chebyshev linkage. Background Art

[0002] Vehicles such as sport utility vehicles, light trucks, and heavy trucks often include a spare tire carrier coupled and / or mounted to a rear end portion of the vehicle (e.g., a rear bumper, taillight portion, tailgate, etc.). The spare tire carrier carries a full-size spare tire that is removably coupled and / or mounted to the spare tire carrier. The full-size spare tire may be removed from the spare tire carrier, for example, in connection with replacing a flat and / or otherwise damaged tire that may be mounted to an axle of the vehicle. The full-size spare tire may have a weight of more than 100 pounds, and when the full-size spare tire is coupled to the spare tire carrier, the wheel center of the full-size spare tire may be at a fixed height of more than 2 feet above the ground. Summary of the invention

[0003] A spare tire carrier with an adjustable height having a Chebyshev linkage is disclosed herein. In some examples, an apparatus is disclosed. In some disclosed examples, the apparatus includes a spare tire carrier to be coupled to a vehicle. In some disclosed examples, the spare tire carrier includes a Chebyshev linkage having an output shaft to carry a spare tire of the vehicle. In some disclosed examples, the output shaft is movable between a raised position and a lowered position.

[0004] In some disclosed examples, an apparatus includes a spare tire carrier to be coupled to a vehicle. In some disclosed examples, the spare tire carrier includes a Chebyshev linkage having an axle to carry a spare tire of the vehicle. In some disclosed examples, an output shaft is movable along a vertical axis between a raised position having a first height and a lowered position having a second height less than the first height.

[0005] According to the present invention, there is provided a device comprising:

[0006] A spare tire carrier is coupled to the vehicle and includes a Chebyshev linkage having an output shaft that carries a spare tire of the vehicle, the output shaft being movable between a raised position and a lowered position.

[0007] According to one embodiment of the invention, the output shaft moves along a vertical axis between a raised position and a lowered position.

[0008] According to one embodiment of the present invention, the spare wheel is detachably coupled to the output shaft.

[0009] According to one embodiment of the invention, the raised position has a first height and the lowered position has a second height which is smaller than the first height.

[0010] According to one embodiment of the present invention, the second height is approximately half of the first height.

[0011] According to one embodiment of the present invention, the Chebyshev linkage mechanism comprises:

[0012] a post having a first end and a second end positioned opposite the first end of the post, the post being coupled to the vehicle;

[0013] a first connecting rod having a first end and a second end positioned opposite the first end of the first connecting rod;

[0014] a second link having a first end and a second end positioned opposite the first end of the second link; and

[0015] The third connecting rod has a first end and a second end located opposite to the first end of the third connecting rod, and the third connecting rod includes an output shaft.

[0016] According to one embodiment of the present invention, the first end of the first link is rotatably coupled to the first end of the column, the second end of the first link is rotatably coupled to the first end of the third link, the first end of the second link is rotatably coupled to the second end of the column, and the second end of the second link is rotatably coupled to the second end of the third link.

[0017] According to one embodiment of the present invention, wherein:

[0018] The column includes a first axis near a first end of the column and a second axis near a second end of the column;

[0019] The first connecting rod includes a first through hole formed near a first end of the first connecting rod and a second through hole formed near a second end of the first connecting rod;

[0020] The second link includes a first through hole formed near a first end of the second link and a second through hole formed near a second end of the second link; and

[0021] The third link includes a first shaft near a first end of the third link, a second shaft near a second end of the third link, and an output shaft positioned intermediately between the first end of the third link and the second end of the third link.

[0022] According to one embodiment of the present invention, the first axis of the column is positioned in the first through hole of the first connecting rod, the first axis of the third connecting rod is positioned in the second through hole of the first connecting rod, the second axis of the column is positioned in the first through hole of the second connecting rod, and the second axis of the third connecting rod is positioned in the second through hole of the second connecting rod.

[0023] According to an embodiment of the present invention, the first link has a curved shape.

[0024] According to one embodiment of the present invention, the first connecting rod includes a straight portion, a first inclined portion and a second inclined portion, the straight portion having a first end and a second end positioned opposite to the first end of the straight portion, the first inclined portion extending from the first end of the straight portion at a first angle, and the second inclined portion extending from the second end of the straight portion at a second angle.

[0025] According to one embodiment of the present invention, the first link includes a pawl formed near a junction of the straight portion and the second inclined portion of the first link, and the output shaft is received in the pawl when the output shaft is in the lowered position.

[0026] According to one embodiment of the present invention, the spare tire carrier also includes a spring having a first end and a second end positioned opposite to the first end of the spring, the first end of the spring being coupled to the second end of the column, the second end of the spring being coupled to the output shaft, the spring biasing the output shaft away from the lowered position and toward the raised position.

[0027] According to one embodiment of the invention, when the output shaft is in the raised position, the second connecting rod is substantially perpendicular to the column.

[0028] According to one embodiment of the present invention, the spare tire carrier further includes a lock that engages the second link to prevent the second link from rotating beyond a vertical position when the output shaft is moved from the lowered position to the raised position.

[0029] According to the present invention, there is provided a device comprising:

[0030] A spare tire carrier is coupled to a vehicle, the spare tire carrier including a Chebyshev linkage having an axle carrying a spare tire of the vehicle, the axle being movable along a vertical axis between a raised position having a first height and a lowered position having a second height less than the first height.

[0031] According to one embodiment of the present invention, the second height is approximately half of the first height.

[0032] According to one embodiment of the present invention, the Chebyshev linkage mechanism comprises:

[0033] a post having a first end and a second end positioned opposite the first end of the post, the post being coupled to the vehicle;

[0034] a first connecting rod having a first end and a second end positioned opposite the first end of the first connecting rod;

[0035] a second link having a first end and a second end positioned opposite the first end of the second link; and

[0036] The third link has a first end and a second end located opposite the first end of the third link, and the third link includes a shaft.

[0037] According to one embodiment of the present invention, the first end of the first link is rotatably coupled to the first end of the column, the second end of the first link is rotatably coupled to the first end of the third link, the first end of the second link is rotatably connected to the second end of the column, and the second end of the second link is rotatably coupled to the second end of the third link.

[0038] According to one embodiment of the invention, the column, the second link and the third link have respective straight shapes, and the first link has a curved shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 An exemplary vehicle including an exemplary height-adjustable spare tire carrier having an exemplary Chebyshev linkage constructed in accordance with the teachings of the present invention is shown;

[0040] Figure 2 yes Figure 1 An exploded view of an exemplary adjustable height spare tire carrier;

[0041] Figure 3 is in an elevated position Figure 1 and 2 A perspective view of an exemplary height-adjustable spare tire carrier;

[0042] Figure 4 yes Figure 3 in an elevated position Figure 1-3 A front view of an exemplary height-adjustable spare tire carrier;

[0043] Figure 5 It is in the middle Figure 1-4 A front view of an exemplary height-adjustable spare tire carrier;

[0044] Figure 6 is in a lowered position Figure 1-5 A front view of an exemplary height-adjustable spare tire carrier;

[0045] Figure 7is a perspective view of a second example adjustable height spare tire carrier having a second example Chebyshev linkage constructed in accordance with the teachings of the present invention.

[0046] Certain examples are shown in the drawings identified above and described in detail below. In describing these examples, the same or identical reference numerals are used to identify the same or similar elements. The drawings are not necessarily drawn to scale and certain features and certain views of the drawings may be shown exaggerated in scale or in schematic diagrams for the sake of clarity and / or simplicity. DETAILED DESCRIPTION

[0047] Known spare tire carriers carry a full-size spare tire that is removably coupled to and / or mounted on the spare tire carrier. The full-size spare tire may weigh more than 100 pounds, and when the full-size spare tire is coupled to the spare tire carrier, the wheel center of the full-size spare tire may be at a fixed height of more than 2 feet above the ground. Therefore, it may be necessary (e.g., by a person) to perform work associated with removing the full-size spare tire from the spare tire carrier and / or attaching the full-size spare tire to the spare tire carrier, including lowering the full-size spare tire from the spare tire carrier to the ground below, and / or raising the full-size spare tire from the ground below to the spare tire carrier.

[0048] The height-adjustable spare tire carrier disclosed herein includes a Chebyshev linkage mechanism that advantageously enables a spare tire (e.g., a full-size spare tire) carried by an output shaft of the Chebyshev linkage mechanism to be mechanically lowered from a first position (e.g., a raised position) separated from the ground below by a first distance to a second position (e.g., a lowered position) separated from the ground below by a second distance less than the first distance. Mechanically lowering the spare tire from the first position to the second position by the Chebyshev linkage mechanism advantageously reduces the amount of work performed by personnel associated with removing the spare tire from the spare tire carrier and / or attaching the spare tire to the spare tire carrier, including lowering the spare tire from the spare tire carrier to the ground below, and / or raising the spare tire from the ground below to the spare tire carrier.

[0049] Figure 1 An exemplary vehicle 100 is shown including an exemplary height-adjustable spare tire carrier 102 having an exemplary Chebyshev linkage 104 constructed in accordance with the teachings of the present invention. Figure 1 The vehicle 100 may be a sport utility vehicle, a light truck, a heavy truck, etc. Figure 1In the example shown, the height-adjustable spare tire carrier 102 is coupled and / or mounted to an example rear end structure 106 of the vehicle 100. For example, the height-adjustable spare tire carrier 102 may be coupled and / or mounted to an example rear bumper 108 and / or an example taillight section 110 of the vehicle 100. In some examples, Figure 1 The height-adjustable spare tire carrier 102 can be pivoted and / or rotated relative to the rear end structure 106 of the vehicle 100 so that the height-adjustable spare tire carrier 102 can be pivoted and / or rotated away from the rear end structure 106 of the vehicle 100 to enable the tailgate of the vehicle 100 near the taillight portion 110 to be opened without being interfered with by the height-adjustable spare tire carrier 102.

[0050] exist Figure 1 In the illustrated example, vehicle 100 is positioned on exemplary underlying ground surface 112 . Figure 1 The vehicle 100 includes an exemplary spare tire 114 (e.g., a full-size spare tire) that is removably coupled and / or mounted (e.g., via threaded bolts and nuts) to the vehicle. Figure 1 A height-adjustable spare tire carrier 102 is provided. Figure 1 The Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 is actuated (eg, via a force applied by a person) to enable the Figure 1 The spare tire 114 is moved from a first position (eg, Figure 1 The device may be moved from the raised position (shown in the figure) to a second position (e.g., a lowered position) separated from the underlying ground surface 112 by a second distance less than the first distance. Figure 1 The Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 can be actuated to move Figure 1 The spare tire 114 is lowered from the first position to the second position to reduce the amount of work required by personnel to remove the spare tire 114 from the vehicle (e.g., as may occur when changing a flat tire of the vehicle 100). Figure 1 The spare tire 114 responds to actuation Figure 1 The Chebyshev linkage mechanism 104 of the height-adjustable spare tire carrier 102 moves between the first position and the second position along Figure 1 An exemplary vertical axis 116 occurs.

[0051] Figure 2 yes Figure 1 An exploded view of an exemplary height-adjustable spare tire carrier 102 is shown. Figure 2In the illustrated example, the Chebyshev linkage mechanism 104 of the height-adjustable spare tire carrier 102 includes an exemplary post 202, an exemplary first link 204, an exemplary second link 206, and an exemplary third link 208. Any of the post 202, the first link 204, the second link 206, and / or the third link 208 may be implemented as one or more links, struts, bars, rods, shafts, plates of any shape and / or any size including the shapes and / or sizes described below.

[0052] Figure 2 The post 202 includes an exemplary first end 210 and an exemplary second end 212 positioned opposite the first end 210 of the post 202 . Figure 2 The column 202 also includes an exemplary first axis 214 positioned near the first end 210 of the column 202, and an exemplary second axis 216 positioned near the second end 212 of the column 202. Figure 2 In the example shown, a first axis 214 of the post 202 extends laterally from the post 202 in a first direction, and a second axis 216 of the post 202 extends laterally from the post 202 in a second direction opposite the first direction.

[0053] Figure 2 The illustrated column 202 has a rectilinear shape that defines a relative length (L1) of the column 202. The relative length (L1) of the column 202 can be measured as the distance between the center of the first axis 214 of the column 202 and the center of the second axis 216 of the column 202. In some examples, Figure 2 The associated length (L1) of the column 202 can have a value ranging between approximately 18.0 and 24.0 inches. Figure 2 In the example shown, Figure 2 The associated length (L1) of column 202 may be approximately 20.0 inches.

[0054] Figure 2 The first link 204 includes an exemplary first end 218 and an exemplary second end 220 positioned opposite the first end 218 of the first link 204 . Figure 2 The first link 204 also includes an exemplary first through-hole 222 formed near the first end 218 of the first link 204 , and an exemplary second through-hole 224 formed near the second end 220 of the first link 204 .

[0055] Figure 2The first link 204 has a curved shape including an exemplary straight portion 226, an exemplary first inclined portion 232, and an exemplary second inclined portion 236, the exemplary straight portion 226 having an exemplary first end 228 and an exemplary second end 230 positioned opposite the first end 228 of the straight portion 226, the exemplary first inclined portion 232 extending from the first end 228 of the straight portion 226 at an exemplary first angle 234, and the exemplary second inclined portion 236 extending from the second end 230 of the straight portion 226 at an exemplary second angle 238. In other examples, the first link 204 can have a curved shape including a straight portion and a single inclined and / or curved portion. The first link 204 can have any shape and / or size so that when the height-adjustable spare tire carrier 102 is moved from the raised position to the lowered position, the first link 204 and the third link 208 can rotate relative to each other without the first link 204 interfering with the output shaft of the third link 208.

[0056] exist Figure 2 In the example shown, an exemplary detent 240 is formed in the first link 204 near the junction of the straight portion 226 and the second inclined portion 236 of the first link 204. Figure 3-6 Further described, Figure 2 The pawl 240 receives the shaft of the third link 208 (eg, a third shaft 258 of the third link 208 described below) when the shaft of the third link 208 is in the lowered position.

[0057] Figure 2 The first link 204 has an associated length (L2) defined by a span and / or distance between the first end 218 of the first link 204 and the second end 220 of the first link 204. The associated length (L2) of the first link 204 can be measured as a distance between a center of the first through hole 222 of the first link 204 and a center of the second through hole 224 of the first link 204. In some examples, Figure 2 The relevant length (L2) of the first link 204 is approximately Figure 2 In some examples, Figure 2 The associated length (L2) of the first link 204 may have a value in the range between approximately 22.5 and 30.0 inches. Figure 2 In the example shown, Figure 2 The associated length (L2) of the first link 204 may be approximately 25.0 inches.

[0058] Figure 2The second link 206 includes an exemplary first end 242 and an exemplary second end 244 positioned opposite the first end 242 of the second link 206 . Figure 2 The second link 206 also includes an exemplary first through hole 246 formed near the first end 242 of the second link 206 , and an exemplary second through hole 248 formed near the second end 244 of the second link 206 .

[0059] Figure 2 The second link 206 has a straight shape that defines a relative length (L3) of the second link 206. The relative length (L3) of the second link 206 can be measured as a distance between a center of the first through hole 246 of the second link 206 and a center of the second through hole 248 of the second link 206. In some examples, Figure 2 The relevant length (L3) of the second connecting rod 206 is approximately equal to Figure 2 In some examples, Figure 2 The associated length (L3) of the second link 206 may have a value in the range of between about 22.5 and 30.0 inches. Figure 2 In the example shown, Figure 2 The associated length (L3) of the second link 206 may be approximately 25.0 inches.

[0060] Figure 2 The third link 208 includes an exemplary first end 250 and an exemplary second end 252 positioned opposite the first end 250 of the third link 208 . Figure 2 The third link 208 also includes an exemplary first axis 254 positioned near the first end 250 of the third link 208, an exemplary second axis 256 positioned near the second end 252 of the third link 208, and an exemplary third axis 258 positioned approximately midway between the first end 250 of the third link 208 and the second end 252 of the third link 208. Figure 2 In the example shown, the first axis 254 of the third link 208 extends laterally from the third link 208 in a first direction, the second axis 256 of the third link 208 extends laterally from the third link 208 in a second direction opposite to the first direction, and the third axis 258 of the third link 208 extends laterally from the third link 208 in the first direction.

[0061] Figure 2 The third link 208 is shown to have a straight shape that defines a length (L4) of the third link 208. The length (L4) of the third link 208 can be measured as the distance between the center of the first axis 254 of the third link 208 and the center of the second axis 256 of the third link 208. In some examples, Figure 2The relevant length (L4) of the third link 208 is approximately Figure 2 half of the relevant length (L1) of column 202, and approximately Figure 2 In some examples, Figure 2 The associated length (L4) of the third link 208 may have a value in the range of between approximately 9.0 and 12.0 inches. Figure 2 In the example shown, Figure 2 The associated length (L4) of the third link 208 may be approximately 10.0 inches.

[0062] The third link 208 may have any shape and / or size such that when the height-adjustable spare tire carrier 102 moves from the raised position to the lowered position, the first link 204 and the third link 208 can rotate relative to each other without the first link 204 interfering with the third axis 258 of the third link 208. For example, the third link 208 may be formed as a triangular plate-like structure, wherein the first axis 254, the second axis 256, and the third axis 258 of the third link 208 are respectively positioned near a corresponding one of the three vertices and / or corners of the triangle. In such an example, when the height-adjustable spare tire carrier 102 moves from the raised position to the lowered position, the vertical range of motion of the third axis 258 of the third link 208 may be relative to the vertical range of motion of the third axis 258 of the third link 208. Figure 2-6 The range of motion achieved by the exemplary embodiment of the third link 208 shown is increased.

[0063] exist Figure 2 In the example shown, the third shaft 258 of the third link 208 serves as and / or acts as Figure 1 and Figure 2 In some examples, the Chebyshev linkage 104 and / or the output shaft of the height-adjustable spare tire carrier 102. Figure 1 The spare tire 114 can be detachably (e.g., directly or indirectly) coupled and / or mounted to the third shaft 258 of the third link 208 of the Chebyshev linkage 104. When the spare tire 114 is coupled and / or mounted to the third shaft 258 of the third link 208, the spare tire 114 is moved along the Figure 1 The height and / or position of the vertical axis 116 is based on the height and / or position of the third axis 258 of the third link 208 of the Chebyshev linkage 104 .

[0064] exist Figure 2 In the example shown, the height-adjustable spare tire carrier 102 also includes an example lock 260 . Figure 2 The lock 260 includes an exemplary first end 262 and an exemplary second end 264 positioned opposite the first end 262 of the lock 260. In some examples, Figure 2 The lock 260 may be implemented as a flange or a plate. The first end 262 of the lock 260 may be coupled to Figure 2 The second end 212 of the column 202 and / or is integrally formed therewith so that the second end 264 of the lock 260 is along the Figure 2 The second link 206 extends laterally from the column 202 in a direction capable of engaging the lock 260. Figure 3-6 Further described, Figure 2 The lock 260 limits the range of motion of the second link 206 and / or more specifically the Chebyshev linkage 104 , and therefore the range of motion of the spare tire 114 along the vertical axis 116 .

[0065] exist Figure 2 In the example shown, the height-adjustable spare tire carrier 102 also includes an example spring 266 . Figure 2 The spring 266 includes an exemplary first end 268 and an exemplary second end 270 positioned opposite the first end 268 of the spring 266. The first end 268 of the spring 266 may be coupled to Figure 2 The second end 270 of the spring 266 may be coupled to the second axis 216 and / or the second end 212 of the column 202. Figure 2 The third shaft 258 of the third connecting rod 208. As shown below Figure 3-6 Further described, Figure 2 The spring 266 biases the third shaft 258 of the third link 208 and / or more specifically the Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 to a first position corresponding to the spare tire 114 as described above (e.g., Figure 1 The position of the cam (shown in the raised position) is shown.

[0066] when Figure 1 and Figure 2 When the Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 is assembled (e.g., as described below), Figure 3-6 shown), Figure 2 The first end 218 of the first link 204 is rotatably coupled to Figure 2 The first end portion 210 of the column 202, Figure 2 The second end 220 of the first link 204 is rotatably coupled to Figure 2 The first end portion 250 of the third link 208, Figure 2 The first end 242 of the second link 206 is rotatably coupled to Figure 2 The second end 212 of the column 202, and Figure 2 The second end 244 of the second link 206 is rotatably coupled to Figure 2The second end 252 of the third link 208 .

[0067] For example, Figure 2 The first end 218 of the first link 204 can be Figure 2 The first axis 214 of the column 202 is positioned at Figure 2 The first through hole 222 of the first connecting rod 204 is rotatably coupled to Figure 2 The first end 210 of the column 202. Figure 2 The second end 220 of the first connecting rod 204 can be Figure 2 The first axis 254 of the third link 208 is positioned at Figure 2 The second through hole 224 of the first connecting rod 204 is rotatably coupled to Figure 2 The first end 250 of the third link 208 . Figure 2 The first end 242 of the second connecting rod 206 is connected by Figure 2 The second axis 216 of the column 202 is positioned at Figure 2 The first through hole 246 of the second connecting rod 206 is rotatably coupled to Figure 2 The second end 212 of the column 202. Figure 2 The second end 244 of the second connecting rod 206 can be Figure 2 The second axis 256 of the third link 208 is positioned at Figure 2 The second through hole 248 of the second connecting rod 206 is rotatably coupled to Figure 2 The second end 252 of the third link 208 .

[0068] In other examples, Figure 1 and Figure 2 The above-mentioned rotatable connection between the column 202, the first link 204, the second link 206 and the third link 208 of the Chebyshev linkage mechanism 104 of the adjustable height spare tire carrier 102 can alternatively be implemented by any type of fasteners (e.g., screws, bolts, pins, rivets, etc.) that enable Figure 2 The first link 204 and / or the second link 206 can be rotatably coupled to Figure 2 The column 202 and / or such that Figure 2 The third link 208 can be rotatably coupled to Figure 2 The first link 204 and / or the second link 206 .

[0069] In some examples, Figure 2 The assembly of the Chebyshev linkage 104 and / or the height-adjustable spare tire carrier 102 may also include Figure 2 The first end 262 of the lock 260 is coupled and / or mounted to Figure 2The second end 212 of the column 202. In some examples, Figure 2 The Chebyshev linkage 104 and / or the height-adjustable spare tire bracket 102 can also be assembled Figure 2 The first end 268 of the spring 266 is coupled and / or mounted to Figure 2 The second axis 216 and / or the second end 212 of the column 202, and the Figure 2 The second end 270 of the spring 266 is coupled and / or mounted to Figure 2 The third shaft 258 of the third connecting rod 208.

[0070] In some examples, Figure 2 The assembly of the Chebyshev linkage 104 and / or the height-adjustable spare tire carrier 102 may also include coupling and / or mounting the Chebyshev linkage 104 and / or the height-adjustable spare tire carrier 102 to the Figure 1 The rear end structure 106 of the vehicle 100. For example, the first end 210 of the column 202 can be coupled and / or mounted to Figure 1 The rear bumper 108 of the vehicle 100. In some examples, Figure 2 The column 202 can be pivoted and / or rotated relative to the rear end structure 106 of the vehicle 100, so that the adjustable height spare tire carrier 102 can be pivoted and / or rotated away from the rear end structure 106 of the vehicle 100 to enable the tailgate of the vehicle 100 near the taillight portion 110 to be opened without interference from the adjustable height spare tire carrier 102.

[0071] Figure 3 is in an elevated position Figure 1 and Figure 2 A perspective view of an exemplary adjustable height spare tire carrier 102 is shown. Figure 4 yes Figure 3 in an elevated position Figure 1-3 A front view of an exemplary adjustable height spare tire carrier 102 is shown. Figure 5 It is in the middle Figure 1-4 A front view of an exemplary adjustable height spare tire carrier 102 is shown. Figure 6 is in a lowered position Figure 1-5 A front view of an exemplary height-adjustable spare tire carrier 102 is shown. Figure 3-6In the example shown, the first end 218 of the first link 204 is rotatably coupled to the first end 210 of the column 202, the second end 220 of the first link 204 is rotatably coupled to the first end 250 of the third link 208, the first end 242 of the second link 206 is rotatably coupled to the second end 212 of the column 202, and the second end 244 of the second link 206 is rotatably coupled to the second end 252 of the third link 208. The first end 262 of the lock 260 is coupled to the second end 212 of the column 202. The first end 268 of the spring 266 is coupled to the second end 212 of the column 202, and the second end 270 of the spring 266 is coupled to the third shaft 258 of the third link 208. The first end 210 of the column 202 is coupled to the rear bumper 108 and / or more specifically to the vehicle (e.g., Figure 1 A rear end structure 106 of a vehicle 100).

[0072] exist Figure 3 and Figure 4 In the example shown, the raised position of the height-adjustable spare tire carrier 102 is used to store a spare tire (e.g., Figure 1 For example, the height-adjustable spare tire carrier 102 may be positioned at Figure 3 and Figure 4 The raised position shown in FIG. 1 is used when a vehicle having an adjustable height spare tire carrier 102 is installed (e.g., Figure 1 The third link 208 and / or more specifically the Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 is biased to the position via the spring 266. Figure 3 and Figure 4 When the height-adjustable spare tire carrier 102 is positioned in the Figure 3 and Figure 4 In the raised position shown, the second link 206 is substantially perpendicular to the column 202. The second end 264 of the lock 260 engages the second link 206 and prevents and / or limits the second link from rotating relative to the column 202 beyond the vertical position (e.g., in Figure 3 and Figure 4 further upward in the direction of ).

[0073] When the height-adjustable spare tire carrier 102 is positioned Figure 3 and Figure 4 In the raised position shown in FIG. 1 , the third shaft 258 (eg, output shaft) of the third link 208 is positioned at a first height ( H1 ) along the vertical axis 116 relative to the ground below 112 . Figure 3 and Figure 4 In the example shown, the first height (H1) is approximately 40.0 inches.

[0074] exist Figure 5 In the example shown, the intermediate position of the height-adjustable spare tire carrier 102 is when the height-adjustable spare tire carrier 102 is moved from Figure 3 and Figure 4 The raised position is lowered to the position described below Figure 6 The third link 208 and / or more specifically the Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 is moved from the position encountered during the lowering process via the spring 266. Figure 5 The middle position is biased to Figure 3 and Figure 4 When the height-adjustable spare tire carrier 102 is positioned in the Figure 5 In the intermediate position shown, the third shaft 258 (eg, output shaft) of the third link 208 is positioned at a second height (H2) relative to the underlying ground 112 along the vertical axis 116. The second height (H2) is less than Figure 3 and Figure 4 The first height (H1). Figure 5 In the example shown, the second height (H2) is approximately 30.0 inches.

[0075] The height-adjustable spare tire carrier 102 may be configured to adjust the height of the spare tire carrier 102 by applying a force (e.g., a downward force in the direction of the underlying ground surface 112) to a spare tire (e.g., an output shaft) carried by and / or coupled to the third shaft 258 (e.g., an output shaft) of the third link 208 of the height-adjustable spare tire carrier 102. Figure 1 The spare wheel 114) from Figure 3 and Figure 4 The raised position moves to Figure 5 Move the height-adjustable spare wheel carrier 102 from Figure 3 and Figure 4 The raised position is mechanically lowered to Figure 5 The intermediate position reduces the amount of work that personnel may need to do in connection with removing the spare tire from the height-adjustable spare tire carrier 102 and lowering the removed spare tire to the ground 112 below.

[0076] exist Figure 6 In the example shown, the lowered position of the height-adjustable spare tire carrier 102 is used to remove the spare tire (e.g., Figure 1 For example, the height-adjustable spare tire carrier 102 may be positioned at Figure 6 The lowered position shown is useful when a vehicle having an adjustable height spare tire carrier 102 is installed (e.g., Figure 1When the vehicle 100 is stationary, the spare tire is removed. The third link 208 and / or more specifically the Chebyshev linkage 104 of the height-adjustable spare tire carrier 102 is moved from the spring 266 to the Figure 6 The lower position bias to Figure 3 and Figure 4 When the height-adjustable spare tire carrier 102 is positioned in the Figure 6 In the lowered position shown, the first link 204 (e.g., the straight portion 226 of the first link 204) is substantially perpendicular to the column 202. The third shaft 258 (e.g., the output shaft) of the third link 208 engages the pawl 240 of the first link 204, which thereby prevents the first link 204 from rotating relative to the column 202 beyond the vertical position (e.g., in Figure 6 further downward in the direction of the

[0077] When the height-adjustable spare tire carrier 102 is positioned Figure 6 , the third shaft 258 (eg, output shaft) of the third link 208 is positioned at a third height (H3) relative to the ground below 112 along the vertical axis 116. The third height (H3) is less than Figure 3 and Figure 4 The first height (H1) of Figure 5 The second height (H2) in Figure 6 In the example shown, the third height (H3) is approximately 20.0 inches.

[0078] The height-adjustable spare tire carrier 102 may be configured to adjust the height of the spare tire carrier 102 by applying a force (e.g., a downward force in the direction of the underlying ground surface 112) to a spare tire (e.g., an output shaft) carried by and / or coupled to the third shaft 258 (e.g., an output shaft) of the third link 208 of the height-adjustable spare tire carrier 102. Figure 1 The spare wheel 114) from Figure 3 and Figure 4 The raised position (or Figure 5 Move to the middle position of Figure 6 Lower the height-adjustable spare wheel carrier 102 from Figure 3 and Figure 4 The raised position is mechanically lowered to Figure 6 The lowered position reduces the amount of work that personnel may need to do in connection with removing the spare tire from the adjustable height spare tire carrier 102 and lowering the removed spare tire to the ground 112 below.

[0079] Figure 7is a perspective view of a second example adjustable height spare tire carrier 700 having a second example Chebyshev linkage 701 constructed in accordance with the teachings of the present invention. Figure 7 The height-adjustable spare tire carrier 700 can be mounted to Figure 1 The exemplary rear end structure 106 (eg, exemplary rear bumper 108) of the exemplary vehicle 100 may carry Figure 1 An exemplary spare tire 114 is shown. Figure 7 The Chebyshev linkage 701 includes an exemplary column 702, an exemplary first link 704, an exemplary second link 706, and an exemplary third link 708. Any column 702, first link 704, second link 706, and / or third link 708 may be implemented as one or more links, struts, bars, rods, shafts, plates, etc., of any shape and / or any size including the shapes and / or sizes described below.

[0080] Figure 7 The post 702 includes an exemplary first end 710 and an exemplary second end 712 positioned opposite the first end 710 of the post 702 . Figure 7 The column 702 also includes an exemplary first shaft 714 ( Figure 7 ), and an exemplary second axis 716 located near the second end 712 of the column 702. Figure 7 In the example shown, a first axis 714 of the post 702 extends laterally from the post 702 in a first direction, and a second axis 716 of the post 702 extends laterally from the post 702 in a second direction opposite the first direction.

[0081] Figure 7 The column 702 has a rectilinear cylindrical shape that defines a relative length (L1) of the column 702. The relative length (L1) of the column 702 can be measured as the distance between the center of the first axis 714 of the column 702 and the center of the second axis 716 of the column 702. In some examples, Figure 7 The associated length (L1) of the column 702 can have a value ranging between approximately 18.0 and 24.0 inches. Figure 7 In the example shown, Figure 7 The associated length (L1) of column 702 may be approximately 20.0 inches.

[0082] Figure 7 The first link 704 includes an exemplary first end 718 and an exemplary second end 720 positioned opposite the first end 718 of the first link 704 . Figure 7 The first link 704 also includes an exemplary first through hole 722 ( Figure 7 ), and an exemplary second through hole 724 (not visible in FIG. 1 ) formed near the second end 720 of the first link 704 Figure 7 (not visible in the image).

[0083] Figure 7 The first link 704 has a curved shape including an exemplary straight portion 726 having an exemplary first end 728 and an exemplary second end 730 positioned opposite to the first end 728 of the straight portion 726, and an exemplary curved portion 732 formed at the second end 730 of the straight portion 726. The first link 704 may have any shape and / or size such that the first link 704 and the third link 708 can rotate relative to each other without the first link 704 interfering with the output shaft of the third link 708 when the height-adjustable spare tire carrier 700 is moved from the raised position to the lowered position.

[0084] Figure 7 The first link 704 has an associated length (L2) defined by a span and / or distance between the first end 718 of the first link 704 and the second end 720 of the first link 704. The associated length (L2) of the first link 704 can be measured as the distance between the center of the first through hole 722 of the first link 704 and the center of the second through hole 724 of the first link 704. In some examples, Figure 7 The relevant length (L2) of the first link 704 is approximately Figure 7 In some examples, Figure 7 The associated length (L2) of the first link 704 can have a value in the range between approximately 22.5 and 30.0 inches. Figure 7 In the example shown, Figure 7 The associated length (L2) of the first link 704 may be approximately 25.0 inches.

[0085] Figure 7 The second link 706 includes an exemplary first end 742 and an exemplary second end 744 positioned opposite the first end 742 of the second link 706 . Figure 7 The second link 706 also includes an exemplary first through hole 746 formed near the first end 742 of the second link 706 , and an exemplary second through hole 748 formed near the second end 744 of the second link 706 .

[0086] Figure 7The second link 706 has a straight shape that defines a relative length (L3) of the second link 706. The relative length (L3) of the second link 706 can be measured as a distance between a center of the first through hole 746 of the second link 706 and a center of the second through hole 748 of the second link 706. In some examples, Figure 7 The relevant length (L3) of the second link 706 is approximately equal to Figure 7 In some examples, Figure 7 The associated length (L3) of the second link 706 can have a value in the range of between approximately 22.5 and 30.0 inches. Figure 7 In the example shown, Figure 7 The associated length (L3) of the second link 706 may be approximately 25.0 inches.

[0087] Figure 7 The third link 708 includes an exemplary first end 750 and an exemplary second end 752 positioned opposite the first end 750 of the third link 708 . Figure 7 The third link 708 also includes an exemplary first shaft 754 ( Figure 7 ), an exemplary second axis 756 positioned near the second end 752 of the third link 708, and an exemplary third axis 758 positioned approximately midway between the first end 750 of the third link 708 and the second end 752 of the third link 708. Figure 7 In the example shown, the first axis 754 of the third link 708 extends laterally from the third link 708 in a first direction, the second axis 756 of the third link 708 extends laterally from the third link 708 in a second direction opposite to the first direction, and the third axis 758 of the third link 708 extends laterally from the third link 708 in the first direction.

[0088] Figure 7 The third link 708 has a straight shape that defines a length (L4) of the third link 708. The length (L4) of the third link 708 can be measured as the distance between the center of the first axis 754 of the third link 708 and the center of the second axis 756 of the third link 708. In some examples, Figure 7 The relevant length (L4) of the third link 708 is approximately Figure 7 half of the relevant length (L1) of column 702, and approximately Figure 7 In some examples, Figure 7 The associated length (L4) of the third link 708 can have a value in the range of between approximately 9.0 and 12.0 inches. Figure 7In the example shown, Figure 7 The associated length (L4) of the third link 708 may be approximately 10.0 inches.

[0089] The third link 708 may have any shape and / or size such that when the height-adjustable spare tire carrier 700 is moved from the raised position to the lowered position, the first link 704 and the third link 708 are able to rotate relative to each other without the first link 704 interfering with the third axis 758 of the third link 708. For example, the third link 708 may be formed as a triangular plate-like structure, wherein the first axis 754, the second axis 756, and the third axis 758 of the third link 708 are respectively positioned near a corresponding one of the three vertices and / or corners of the triangle. In such an example, when the height-adjustable spare tire carrier 700 is moved from the raised position to the lowered position, the vertical range of motion of the third axis 758 of the third link 708 may be relative to the vertical range of motion of the third axis 758 of the third link 708. Figure 7 The range of motion achieved by the exemplary embodiment of the third link 708 shown is increased.

[0090] exist Figure 7 In the example shown, the third shaft 758 of the third link 708 is used as and / or functions as Figure 7 In some examples, the Chebyshev linkage 701 and / or the output shaft of the height-adjustable spare tire carrier 700. Figure 1 and Figure 7 The spare tire 114 can be (e.g., directly or indirectly) detachably coupled and / or mounted to the third shaft 758 of the third link 708 of the Chebyshev linkage 701. When the spare tire 114 is coupled and / or mounted to the third shaft 758 of the third link 708, the spare tire 114 is moved along the Figure 1 The height and / or position of the vertical axis 116 is based on the height and / or position of the third axis 758 of the third link 708 of the Chebyshev linkage 701 .

[0091] When the Chebyshev linkage 701 of the height-adjustable spare tire bracket 700 is Figure 7 When assembling as shown, Figure 7 The first end 718 of the first link 704 is rotatably coupled to Figure 7 The first end 710 of the column 702, Figure 7 The second end 720 of the first link 704 is rotatably coupled to Figure 7 The first end portion 750 of the third link 708, Figure 7 The first end 742 of the second link 706 is rotatably coupled to Figure 7 The second end 712 of the column 702, Figure 7 The second end 744 of the second link 706 is rotatably coupled to Figure 7The second end 752 of the third link 708.

[0092] For example, Figure 7 The first end 718 of the first link 704 can be Figure 7 The first axis 714 of the column 702 is positioned at Figure 7 The first through hole 722 of the first connecting rod 704 is rotatably coupled to Figure 7 A first end 710 of the column 702 . Figure 7 The second end 720 of the first connecting rod 704 can be Figure 7 The first axis 754 of the third link 708 is positioned at Figure 7 The second through hole 724 of the first connecting rod 704 is rotatably coupled to Figure 7 The first end 750 of the third link 708. Figure 7 The first end 742 of the second connecting rod 706 can be Figure 7 The second axis 716 of the column 702 is positioned at Figure 7 The first through hole 746 of the second connecting rod 706 is rotatably coupled to Figure 7 The second end 712 of the column 702. Figure 7 The second end 744 of the second connecting rod 706 can be Figure 7 The second axis 756 of the third link 708 is positioned at Figure 7 The second through hole 748 of the second connecting rod 706 is rotatably coupled to Figure 7 The second end 752 of the third link 708.

[0093] In other examples, Figure 7 The above-mentioned rotatable connection between the column 702, the first link 704, the second link 706 and the third link 708 of the Chebyshev linkage 701 of the height-adjustable spare tire carrier 700 can alternatively be implemented by any type of fasteners (e.g., screws, bolts, pins, rivets, etc.) that enable Figure 7 The first link 704 and / or the second link 706 can be rotatably coupled to Figure 7 Column 702, and / or such that Figure 7 The third link 708 can be rotatably coupled to Figure 7 The first link 704 and / or the second link 706.

[0094] exist Figure 7 In the example shown, the Chebyshev linkage 701 and / or the height-adjustable spare tire carrier 700 are shown coupled and / or mounted to Figure 1 The rear end structure 106 of the vehicle 100. More specifically, the first end 710 of the column 702 is coupled and / or mounted to Figure 1 The rear bumper 108 of the vehicle 100. Figure 7 In the example shown, the column 702 can be pivoted and / or rotated relative to the rear bumper 108 of the vehicle 100 so that the height-adjustable spare tire carrier 700 can be pivoted and / or rotated away from the rear bumper 108 of the vehicle 100 to enable the tailgate of the vehicle 100 proximate the taillight portion 110 to be opened without interference from the height-adjustable spare tire carrier 700.

[0095] exist Figure 7 In the illustrated example, the height-adjustable spare tire carrier 700 is shown in an intermediate position between the raised position and the lowered position. Figure 7 When the height-adjustable spare tire carrier 700 is positioned in the raised position, Figure 7 The second connecting rod 706 is substantially perpendicular to Figure 7 The raised position of the height-adjustable spare tire carrier 700 is used to store a spare tire (e.g., Figure 1 and Figure 7 For example, the height-adjustable spare tire carrier 700 may be positioned in an elevated position to allow the vehicle (e.g., Figure 1 When the height-adjustable spare tire carrier 700 is positioned in the raised position, the third shaft 758 (eg, output shaft) of the third link 708 is relative to the third shaft 758 (eg, output shaft) of the third link 708. Figure 1 112 below the ground along Figure 1 The vertical axis 116 of is positioned at a first height.

[0096] Figure 7 The intermediate position of the height-adjustable spare tire carrier 700 shown in FIG. 1 is the position encountered during the process of lowering the height-adjustable spare tire carrier 700 from the raised position to the lowered position described below. Figure 7 In the middle position shown, the third shaft 758 (eg, output shaft) of the third link 708 is relative to Figure 1 The ground below 112 is positioned at a second height along the vertical axis 116. The second height is less than the first height associated with the elevated position.

[0097] The height-adjustable spare tire carrier 700 can be configured to adjust the height of the spare tire carrier 700 by applying a force (e.g., a downward force in the direction of the underlying ground 112) to a spare tire (e.g., an output shaft) carried by and / or coupled to the third shaft 758 (e.g., an output shaft) of the third link 708 of the height-adjustable spare tire carrier 700. Figure 1 and Figure 7 The spare wheel 114) is moved from the raised position to Figure 7 The height-adjustable spare wheel carrier 700 is mechanically lowered from the raised position to the intermediate position. Figure 7 The intermediate position reduces the amount of work that personnel may need to do in connection with removing the spare tire from the adjustable height spare tire carrier 700 and lowering the removed spare tire to the ground 112 below.

[0098] when Figure 7 When the height-adjustable spare tire carrier 700 is positioned in the lowered position, Figure 7 The straight portion 226 of the first link 704 is substantially perpendicular to Figure 7 The lowered position of the height-adjustable spare tire carrier 700 is used to remove the spare tire (e.g., Figure 1 and Figure 7 For example, the height-adjustable spare tire carrier 700 may be positioned in a lowered position to allow the vehicle (e.g., Figure 1 When the vehicle 100 is stationary, the spare tire is removed. When the height-adjustable spare tire carrier 700 is positioned in the lowered position, the third shaft 758 (eg, output shaft) of the third link 708 is relative to Figure 1 The ground below 112 is positioned at a third height along the vertical axis 116. The third height is less than the first height associated with the elevated position and less than the second height associated with the intermediate position.

[0099] The height-adjustable spare tire carrier 700 can be configured to adjust the height of the spare tire carrier 700 by applying a force (e.g., a downward force in the direction of the ground below 112) to a spare tire (e.g., an output shaft) carried by and / or coupled to the third shaft 758 (e.g., an output shaft) of the third link 708 of the height-adjustable spare tire carrier 700. Figure 1 and Figure 7 spare tire 114) from the raised position (or Figure 7 Mechanically lowering the adjustable height spare tire carrier 700 from the raised position to the lowered position reduces the amount of work that personnel may need to do in connection with removing the spare tire from the adjustable height spare tire carrier 700 and lowering the removed spare tire to the ground 112 below.

[0100] From the foregoing, it can be appreciated that the disclosed height-adjustable spare tire carrier includes a Chebyshev linkage mechanism that advantageously enables a spare tire (e.g., a full-size spare tire) carried by an output shaft of the Chebyshev linkage mechanism to be mechanically lowered from a first position (e.g., a raised position) separated from the ground below by a first distance to a second position (e.g., a lowered position) separated from the ground below by a second distance less than the first distance. Mechanically lowering the spare tire from the first position to the second position via the Chebyshev linkage mechanism reduces the amount of work performed by personnel associated with removing the spare tire from the spare tire carrier and / or attaching the spare tire to the spare tire carrier, including lowering the spare tire from the spare tire carrier to the ground below, and / or raising the spare tire from the ground below to the spare tire carrier.

[0101] In some examples, an apparatus is disclosed. In some disclosed examples, the apparatus includes a spare tire carrier to be coupled to a vehicle. In some disclosed examples, the spare tire carrier includes a Chebyshev linkage structure having an output shaft to carry a spare tire of the vehicle. In some disclosed examples, the output shaft is movable between a raised position and a lowered position.

[0102] In some disclosed examples, the output shaft moves along a vertical axis between a raised position and a lowered position. In some disclosed examples, the spare tire is removably coupled to the output shaft. In some disclosed examples, the raised position has a first height. In some disclosed examples, the lowered position has a second height that is less than the first height. In some disclosed examples, the second height is approximately half of the first height.

[0103] In some disclosed examples, the Chebyshev linkage mechanism also includes a column having a first end and a second end positioned relative to the first end of the column. In some disclosed examples, the column is coupled to a vehicle. In some disclosed examples, the Chebyshev linkage mechanism also includes a first connecting rod having a first end and a second end positioned relative to the first end of the first connecting rod. In some disclosed examples, the Chebyshev linkage mechanism also includes a second connecting rod having a first end and a second end positioned relative to the first end of the second connecting rod. In some disclosed examples, the Chebyshev linkage mechanism also includes a third connecting rod having a first end and a second end positioned relative to the first end of the third connecting rod. In some disclosed examples, the third connecting rod includes an output shaft.

[0104] In some disclosed examples, the first end of the first link is rotatably coupled to the first end of the column. In some disclosed examples, the second end of the first link is rotatably coupled to the first end of the third link. In some disclosed examples, the first end of the second link is rotatably coupled to the second end of the column. In some disclosed examples, the second end of the second link is rotatably coupled to the second end of the third link.

[0105] In some disclosed examples, the column includes a first axis near the first end of the column and a second axis near the second end of the column. In some disclosed examples, the first connecting rod includes a first through hole formed near the first end of the first connecting rod and a second through hole formed near the second end of the first connecting rod. In some disclosed examples, the second connecting rod includes a first through hole formed near the first end of the second connecting rod and a second through hole formed near the second end of the second connecting rod. In some disclosed examples, the third connecting rod includes a first axis near the first end of the third connecting rod, a second axis near the second end of the third connecting rod, and an output shaft positioned at an intermediate position between the first end of the third connecting rod and the second end of the third connecting rod.

[0106] In some disclosed examples, the first axis of the column is positioned within the first through hole of the first connecting rod. In some disclosed examples, the first axis of the third connecting rod is positioned within the second through hole of the first connecting rod. In some disclosed examples, the second axis of the column is positioned within the first through hole of the second connecting rod. In some disclosed examples, the second axis of the third connecting rod is positioned within the second through hole of the second connecting rod.

[0107] In some disclosed examples, the first connecting rod has a curved shape. In some disclosed examples, the first connecting rod includes a straight portion having a first end and a second end positioned relative to the first end of the straight portion. In some disclosed examples, the first connecting rod includes a first inclined portion extending from the first end of the straight portion at a first angle. In some disclosed examples, the first connecting rod includes a second inclined portion extending from the second end of the straight portion at a second angle. In some disclosed examples, the first connecting rod includes a pawl formed near the junction of the straight portion and the second inclined portion of the first connecting rod. In some disclosed examples, when the output shaft is in a lowered position, the output shaft will be received in the pawl.

[0108] In some disclosed examples, the spare tire carrier also includes a spring having a first end and a second end positioned opposite the first end of the spring. In some disclosed examples, the first end of the spring is coupled to the second end of the post. In some disclosed examples, the second end of the spring is coupled to the output shaft. In some disclosed examples, the spring biases the output shaft away from the lowered position and toward the raised position.

[0109] In some disclosed examples, the second link is substantially perpendicular to the column when the output shaft is in the raised position. In some disclosed examples, the spare tire carrier further comprises a lock that engages the second link to prevent the second link from rotating beyond the perpendicular position when the output shaft is moved from the lowered position to the raised position.

[0110] In some disclosed examples, an apparatus includes a spare tire carrier to be coupled to a vehicle. In some disclosed examples, the spare tire carrier includes a Chebyshev linkage having an axle that carries a spare tire of the vehicle. In some disclosed examples, the axle is movable along a vertical axis between a raised position having a first height and a lowered position having a second height less than the first height.

[0111] In some disclosed examples, the Chebyshev linkage mechanism also includes a column having a first end and a second end positioned relative to the first end of the column. In some disclosed examples, the column will be coupled to a vehicle. In some disclosed examples, the Chebyshev linkage mechanism also includes a first connecting rod having a first end and a second end positioned relative to the first end of the first connecting rod. In some disclosed examples, the Chebyshev linkage mechanism also includes a second connecting rod having a first end and a second end positioned relative to the first end of the second connecting rod. In some disclosed examples, the Chebyshev linkage mechanism also includes a third connecting rod having a first end and a second end positioned relative to the first end of the third connecting rod. In some disclosed examples, the third connecting rod includes a shaft.

[0112] In some disclosed examples, the first end of the first link is rotatably coupled to the first end of the column. In some disclosed examples, the second end of the first link is rotatably coupled to the first end of the third link. In some disclosed examples, the first end of the second link is rotatably coupled to the second end of the column. In some disclosed examples, the second end of the second link is rotatably coupled to the second end of the third link. In some disclosed examples, the column, the second link, and the third link have corresponding straight shapes, and the first link has a curved shape.

[0113] Although certain exemplary devices and articles have been disclosed herein, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all devices and articles that fully fall within the scope of the claims of this patent.

Claims

1. A vehicle device, comprising: A spare tire carrier coupled to a vehicle, the spare tire carrier comprising a Chebyshev linkage, wherein the Chebyshev linkage comprises: a post having a first end and a second end positioned opposite the first end of the post, the post being coupled to the vehicle; a first connecting rod having a first end and a second end positioned opposite the first end of the first connecting rod; a second link having a first end and a second end positioned opposite the first end of the second link; and a third link having a first end and a second end positioned opposite the first end of the third link, the third link including an output shaft for carrying a spare tire of the vehicle, the output shaft being movable between a raised position and a lowered position; Wherein the first end of the first link is rotatably coupled to the first end of the column, the second end of the first link is rotatably coupled to the first end of the third link, the first end of the second link is rotatably coupled to the second end of the column, and the second end of the second link is rotatably coupled to the second end of the third link.

2. The apparatus of claim 1, wherein the output shaft moves along a vertical axis between the raised position and the lowered position. 3 . The apparatus of claim 1 , wherein the spare tire is detachably coupled to the output shaft. 4 . The apparatus of claim 1 , wherein the raised position has a first height and the lowered position has a second height that is less than the first height. The apparatus of claim 4 , wherein the second height is approximately half of the first height.

6. The apparatus of claim 1, wherein: The column includes a first axis near the first end of the column and a second axis near the second end of the column; The first connecting rod includes a first through hole formed near the first end of the first connecting rod and a second through hole formed near the second end of the first connecting rod; The second link includes a first through hole formed near the first end of the second link and a second through hole formed near the second end of the second link; and The third link includes a first shaft near the first end of the third link, a second shaft near the second end of the third link, and the output shaft positioned at an intermediate position between the first end of the third link and the second end of the third link.

7. The device according to claim 6, wherein the first axis of the column is positioned in the first through hole of the first link, the first axis of the third link is positioned in the second through hole of the first link, the second axis of the column is positioned in the first through hole of the second link, and the second axis of the third link is positioned in the second through hole of the second link.

8. The apparatus of claim 1, wherein the first link has a curved shape.

9. The device according to claim 8, wherein the first connecting rod includes a straight portion, a first inclined portion, and a second inclined portion, the straight portion having a first end and a second end positioned opposite to the first end of the straight portion, the first inclined portion extending from the first end of the straight portion at a first angle, and the second inclined portion extending from the second end of the straight portion at a second angle.

10. The apparatus of claim 9, wherein the first link includes a detent formed near a junction of the straight portion and the second inclined portion of the first link, the output shaft being received in the detent when the output shaft is in the lowered position.

11. The apparatus of claim 1 , wherein the spare tire carrier further comprises a spring having a first end and a second end positioned opposite the first end of the spring, the first end of the spring being coupled to the second end of the post, the second end of the spring being coupled to the output shaft, the spring biasing the output shaft away from the lowered position and toward the raised position.

12. The apparatus of claim 1, wherein the second connecting rod is substantially perpendicular to the column when the output shaft is in the raised position.

13. The apparatus of claim 12, wherein the spare tire carrier further comprises a lock that engages the second link to prevent the second link from rotating beyond a vertical position when moving the output shaft from the lowered position to the raised position.

14. A vehicle device comprising: A spare tire carrier coupled to a vehicle, the spare tire carrier comprising a Chebyshev linkage, wherein the Chebyshev linkage comprises: a post having a first end and a second end positioned opposite the first end of the post, the post being coupled to the vehicle; a first connecting rod having a first end and a second end positioned opposite the first end of the first connecting rod; a second link having a first end and a second end positioned opposite the first end of the second link; and a third link having a first end and a second end positioned opposite the first end of the third link, the third link including a shaft for carrying a spare tire of the vehicle, the shaft being movable along a vertical axis between a raised position having a first height and a lowered position having a second height less than the first height; Wherein the first end of the first link is rotatably coupled to the first end of the column, the second end of the first link is rotatably coupled to the first end of the third link, the first end of the second link is rotatably coupled to the second end of the column, and the second end of the second link is rotatably coupled to the second end of the third link.

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