Bicycle trainer

Abstract

A bicycle trainer includes a frame assembly including a pair of support legs connected to a central structure. The central structure includes a first curved track and a second curved track longitudinally spaced from the first curved track along the central structure. The frame assembly includes a sliding base having a first guide roller engaged with the first curved track and a second guide roller engaged with the second curved track. The frame assembly includes a main frame member coupled to the sliding base. A first axle is supported by the main frame member, the first axle adapted to be connected to a pair of claws from the bicycle, where the rear wheel is removed from the pair of claws to operatively connect the bicycle to the bicycle trainer. The resistance unit is drivingly coupled to the first axle.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Patent Application No. 18 / 314,455, filed on May 9, 2023. The entire disclosure of the above application is incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a bicycle trainer, and more particularly to a bicycle trainer with improved acceleration feeling. Background Art

[0003] This section provides background information related to the present disclosure which is not necessarily prior art.

[0004] Busy schedules, inclement weather, intensive training, and other factors have led cyclists from novices to professionals to train indoors. There are many indoor training options, including exercise bikes and trainers. An exercise bike looks similar to a bicycle but without wheels, and includes a seat, handlebars, pedals, crank arms, drive sprockets, and chains. In contrast, an indoor trainer is a mechanism that allows a rider to mount their actual bicycle onto a trainer, with or without a rear wheel, and then ride the bicycle indoors. The trainer provides resistance and supports the bicycle, but is otherwise a simpler mechanism than a full exercise bike. Such a trainer allows the user to use their own bicycle for training, and is much smaller than a full exercise bike, and is generally less expensive than a full exercise bike.

[0005] Although very useful, conventional trainers still have many disadvantages. For example, it is often difficult to level a conventional trainer side to side. In addition, riding a bicycle that is slightly tilted is uncomfortable and may cause accidental damage to the bicycle. In another example, many riders prefer their bicycles to be level front to back so that it feels like the rider is training on a flat surface, rather than on a slope or incline. However, most conventional trainers cannot be adjusted vertically, so the rider places a board, book, etc. under the trainer to raise the entire trainer, or places a board, book, etc. under the front wheel to raise the front of the bicycle.

[0006] Although many trainers are portable based on the simple fact that they are relatively small. Such trainers are still heavy, may be difficult to load into a car boot, and still take up a lot of space when not in use. However, portability is important because some people may want to store their trainers when not in use, while some people may take their trainers to races, etc., in order to warm up before racing and cool down afterwards. Finally, it is also important to provide an improved and more realistic rider feel on the trainer.

[0007] It is with these considerations in particular that aspects of the trainer disclosed herein were conceived. Summary of the invention

[0008] This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.

[0009] Aspects of the present disclosure are directed to a bicycle trainer that provides several advantages over conventional designs. The trainer includes a vertically adjustable rear axle and cassette (bicycle rear gear) where the user mounts their bicycle to the trainer. Generally speaking, the user removes their rear wheel from the dropouts on the rear of the bicycle (not shown) and then connects the rear axle and cassette of the trainer to the dropouts in the same manner as the rear wheel is coupled to the bicycle.

[0010] The cassette is coupled to a pulley that drives a belt connected to a flywheel or other resistance mechanism so that when the user exercises, their pedaling motion drives the flywheel. The flywheel includes a controllable electromagnetic brake. In addition, the torque applied to the flywheel by the rider pedaling a bicycle mounted on the trainer is measured at a bracket that interconnects a portion of the flywheel with a fixed portion of the frame. The magnetic brake can be controlled based on power measurement, RPM, heart rate and other factors. Control of the trainer and display of many possible features (power, RPM, terrain, video, user profile, heart rate, etc.) can be provided by a dedicated device or by a smart phone, tablet computer, etc. running an application configured to communicate with the trainer.

[0011] In one embodiment of a bicycle trainer, the trainer includes a frame assembly supporting an axle to which the rear wheel of a bicycle can be connected. According to one aspect of the present disclosure, the frame assembly includes a pair of support legs connected to a central structure. The central structure includes a first curved track and a second curved track longitudinally spaced apart from the first curved track along the central structure. The frame assembly includes a sliding base having a first guide roller engaged with the first curved track and a second guide roller engaged with the second curved track. The frame assembly includes a main frame member coupled to the sliding base. A first axle is supported by the main frame member, the first axle being adapted to be connected to a pair of dropouts from a bicycle, wherein the rear wheel is removed from the pair of dropouts to operably connect the bicycle to the bicycle trainer. A resistance unit is drivingly coupled to the first axle.

[0012] According to another aspect, the first curved track includes a pair of first curved track members on opposite sides of a sliding base, the first guide roller includes a pair of first guide rollers on opposite sides of the sliding base, and each first guide roller is engaged with a corresponding one of the pair of first curved track members.

[0013] According to another aspect, the central structure includes an elongated leg, and the pair of first curved track members are disposed on opposite sides of the elongated leg.

[0014] According to another aspect, the slide base includes a rear bracket supporting a first support roller and an elongated rail connected to the rear bracket and supporting a second support roller.

[0015] According to another aspect, the first support guide roller includes a pair of first support guide rollers, and the rear bracket is U-shaped, wherein each of the pair of first support guide rollers is supported to a corresponding leg of the U-shaped rear bracket, and the main frame member is pivotally connected between the legs of the U-shaped rear bracket.

[0016] According to another aspect, the frame assembly is vertically adjustable.

[0017] According to another aspect, the frame assembly includes an adjustment bracket pivotally connected to the main frame member and adjustably connected to the slide base.

[0018] According to another aspect, the pair of support legs are each pivotally mounted to the center support.

[0019] According to another aspect, the locking mechanism is selectively engageable to prevent movement between the sliding base and the central structure.

[0020] According to another aspect of the present disclosure, a bicycle trainer includes a frame assembly including a mounting bracket to which a pair of support legs are mounted. A central structure is mounted to the mounting bracket between the pair of support legs. The central structure includes a first curved track and a second curved track longitudinally spaced from the first curved track along the central structure. The frame assembly includes a sliding base having a first guide roller engaged with the first curved track and a second guide roller engaged with the second curved track. The frame assembly includes a main frame member pivotally coupled to the sliding base. A first axle is supported by the main frame member. The first axle is adapted to be coupled to a pair of dropouts of a bicycle, wherein the rear wheel is removed from the pair of dropouts to operably couple the bicycle to the bicycle trainer. A resistance unit is drivingly coupled to the first axle.

[0021] Other implementations are also described and described herein. In addition, although multiple implementations are disclosed, other implementations of the currently disclosed technology will become apparent to those skilled in the art from the following detailed description of the illustrative implementations that show and describe the currently disclosed technology. As will be appreciated, the currently disclosed technology can be modified in various aspects, all without departing from the spirit and scope of the currently disclosed technology. Therefore, the drawings and detailed description are to be considered illustrative and not restrictive in nature.

[0022] Further areas of applicability will become apparent from the description provided herein.The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

[0024] Figure 1 is a right rear isometric view of a trainer according to the principles of the present disclosure;

[0025] Figure 2 yes Figure 1 Left front isometric view of the trainer;

[0026] Figure 3 yes Figure 1 a right side view of a portion of the trainer in which a portion of the housing is removed to expose the flywheel belt drive system;

[0027] Figure 4 is a cross-sectional view taken along a right rear curved track in accordance with the principles of the present disclosure;

[0028] Figure 5 is a cross-sectional view taken along a forward center curved track according to the principles of the present disclosure;

[0029] Figure 6 is a cross-sectional view taken along a left rear curved track in accordance with the principles of the present disclosure;

[0030] Figure 7 is a side plan view of a base portion of a trainer according to the principles of the present disclosure;

[0031] Figure 8 is a perspective view of a sliding portion of a trainer according to the principles of the present disclosure;

[0032] Fig. 9 is a detailed perspective view of a locking mechanism of a trainer according to the principles of the present disclosure;

[0033] Fig.10 is a side plan view of a flexible and adjustable leveling support pad; and

[0034] Fig.11 yes Figure 1 A bottom perspective view of the trainer is shown.

[0035] Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0037] Aspects of the present disclosure are directed to a bicycle trainer that provides several advantages over conventional designs. The trainer includes a vertically adjustable rear axle and cassette (bicycle rear gear) where the user mounts their bicycle to the trainer. Generally speaking, the user removes their rear wheel from the dropouts at the rear of the bicycle and then connects the rear axle and cassette of the trainer to the dropouts in the same manner as the rear wheel is coupled to the bicycle.

[0038] The cassette is coupled to a pulley that drives a belt connected to a flywheel or other resistance mechanism so that when the user exercises, their pedaling motion drives the flywheel. The flywheel includes a controllable electromagnetic brake. In addition, the torque applied to the flywheel by the rider pedaling a bicycle mounted on the trainer is measured at a bracket that interconnects a portion of the flywheel with a fixed portion of the frame. The magnetic brake can be controlled based on power measurement, RPM, heart rate and other factors. Control of the trainer and display of many possible features (power, RPM, terrain, video, user profile, heart rate, etc.) can be provided by a dedicated device or by a smart phone, tablet computer, etc. running an application configured to communicate with the trainer.

[0039] More specifically, refer to Figure 1 , the bicycle trainer 10 includes a central structure 12 coupled to and extending forwardly from a rear mounting bracket 14. The central structure 12 is disposed below a pulley 16 and slightly offset from a longitudinal centerline of the trainer 10. A pair of support legs 18, 20 are pivotally coupled to the rear mounting bracket 14 and are located on opposite sides of the rear mounting bracket 14. The first support leg 18 and the second support leg 20 are configured to pivot inwardly toward the central structure 12 for storing and moving the trainer 10, and the first support leg 18 and the second support leg 20 are capable of pivoting outwardly and away from the central structure 12 to support the trainer 10 laterally when the trainer 10 is in use.

[0040] The distal ends of the first support leg 18 and the second support leg 20 are provided with flexible and adjustable leveling support pads 22. In addition, an elongated pad 24 is coupled to the underside of the rear mounting bracket 14. Each pad 22 and leg 18, 20 functions in the same manner, so the first pad 22 at the outer end of the first leg 18 is discussed in detail. Fig.10, pads 22 are adjustably mounted to the legs 18 to allow the trainer 10 to be leveled transversely to the longitudinal centerline, thereby maintaining the mounted bicycle in a horizontal left-right orientation. Although other alternatives are possible, in the example shown in the figures, the legs 18 define a threaded hole and the pads 22 are coupled to a threaded member 24 that engages the hole. An adjustment collar 26 is coupled to the threaded member so that rotation of the collar 26 causes the pads 22 to move vertically relative to the legs 18. The pads 22 are made of rubber or another elastomeric material so that the pads can flex when the rider applies force in a lateral manner. Thus, the flexible pads 22 provide the user with a side-to-side sway that more closely simulates riding a road bicycle. In addition, the user can quickly and easily adjust the pads 22 on one or both of the first support leg 18 and the second support leg 20, thereby leveling the trainer 10 even on uneven or inclined surfaces.

[0041] Each of the first support leg 18 and the second support leg 20 is pivotally supported by a pivot pin 30 to a corresponding one of a pair of side pivot brackets 28. The pair of side pivot brackets 28 each include an upper arcuate surface 32 having a pair of notches 32a, 32b, one of the pair of notches 32a, 32b corresponding to the inward pivot configuration of the first support leg 18 and the second support leg 20, and the second notch 32b corresponding to the outward pivot (as shown) configuration of the first support leg 18 and the second support leg 20. A retaining assembly 34 is coupled to the legs adjacent the upper arcuate surface and the notches 32a, 32b. The retaining assembly 34 includes a spring loaded pin 36 having a head 38 engageable by a user. The pin 36 supports a collar that selectively fits within the notches 32a and 32b. By pressing the pin 36 against the spring, the collar moves downward into the recess defined in the legs 18, 20 and out of the corresponding notches 32a, 32b. The legs can then be pivoted inwardly or outwardly, and when the user releases the pin 36, the spring slightly pushes the pin 36 upward, causing the collar to engage one of the corresponding notches 32a, 32b, thereby securing the legs 18, 20 in the desired position.

[0042] The pair of side pivot brackets 28 are each connected to a corresponding one of a pair of side housings 40, and the pair of side housings 40 are each connected to opposite sides of the rear mounting bracket 14. Fig.10 As shown, a bottom plate 42 is connected to the bottom of the rear mounting bracket 14 and to a pair of side housings 40. A central base structure 44 is attached to the bottom plate 42 by fasteners and the central base structure 44 may be in the form of a tube. Fig.11 The bottom plate 42 may also include a curved flange 42a that reinforces the central base structure 44. A cap 46 may be provided on the distal end of the central base structure 44. The cap 46 may include a rubber pad 48 for engaging the floor.

[0043] Reference Figure 5 The cross-sectional view and Figure 7 In the plan view of FIG. 4 , the front curved track 50 is mounted to the upper surface of the central base structure 44. The front curved track 50 may be formed by a plastic molding 52 having reinforcing ribs and mounted to the central base structure by fasteners 54. The plastic molding 52 may have a partially cylindrical recess for receiving the central base structure 44 in the form of a tube. The front curved track 50 is elongated along the central base structure 44, wherein the front end 50a and the rear end 50b of the front curved track 50 are bent upward.

[0044] Reference Figure 4 and Figure 6 , each of the pair of side housings 40 includes a rear curved track 56, which can be formed as a curved groove in the side of the plastic molding 58. The pair of side housings 40 are each open toward the central base structure 44. Figure 1 As shown, the cover 60 is disposed on the top of each of the pair of side cases 40 , and the bottom plate 42 closes the bottom of each of the pair of side cases 40 .

[0045] Reference Figure 1 and Figure 8 , shows a slide assembly 64 disposed between a pair of side housings 40 and including a slider central channel 66 having a pair of side walls 66a supporting a front roller 68 rollingly engaged with the front curved track 50 (see Figure 5 , Figure 7 and Fig. 9 ). The front roller 68 is formed by a shaft 69 extending through the side wall 66a (see Figure 8 ) support. The slider rear channel 70 is connected to the slider center channel 66, and the slider rear channel 70 supports a shaft 72, which rotatably supports a pair of rear rollers 74. Each of the pair of rear rollers 74 is supported in rolling engagement with a pair of rear curved tracks 56 within a pair of side housings 40, respectively. Figure 4 and Figure 6 The pair of rear rollers 74 provide lateral support for the bicycle B. Figure 1 and Figure 8 As shown, a rear channel cover 76 is mounted to the top of the slider rear channel 70 .

[0046] Reference Figure 1 , the pulley 16 is mounted on an axle 80, which is supported by a main frame member 82, which is supported by a pivot pin 84 (at Figure 5 and Figure 8The main frame member 82 is pivotally connected to the slider rear channel 70 (best shown in FIG. 1 ) to adjust the height at which the bicycle B is supported. Thus, the main frame member 82 can be pivoted upward or downward relative to the orientation shown in the drawings to vertically adjust the height of the bicycle B. The main frame member 82 extends forward and upward from the slider rear channel 70. A cassette 85 (bicycle rear gear) is mounted on the axle 80 adjacent the pulley 16.

[0047] Reference Figures 1 to 3 , a flywheel 86 is supported by the main frame member 82. The flywheel assembly 86 includes a relatively heavy outer flywheel member 88 that is configured to rotate relative to a plurality of internal components that are substantially fixed relative to the outer rotatable flywheel member 88. The flywheel member 88 is coupled to a flywheel axle 90 that communicates through the main frame member 82 and is rotatably supported by the main frame member 82. The flywheel axle 90 also includes a second flywheel pulley 92 that rotates with the first flywheel pulley 16 via a belt 94. The belt 94 interconnects the pulleys 16, 92 and may include teeth that correspond to the teeth on the first pulley 16 and the second pulley 92. In the depicted arrangement, the pedaling force of the user is transmitted from the first larger pulley 16 to the second pulley 92 supported on the flywheel axle 90 via the belt 94, which in turn causes the flywheel member 88 to rotate. The flywheel assembly 86 provides a resistance unit that may alternatively or additionally include a brake mechanism or other mechanism to provide resistance to the rider.

[0048] like Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, the height adjustment bracket 100 is coupled between the main frame member 82 and the rear channel cover 76 of the central structure to maintain the main member 82 at a desired height. More specifically, at the front end, the adjustment bracket 100 includes a U-shaped portion that defines opposing members 100a on both sides of a central adjustment rail 102 disposed on the central structure. Each member 100a defines a hole. The central adjustment rail 102 defines a plurality of holes 104 along its length that are configured to receive a pin 106 that extends through the hole 100b of the opposing member 100a and one of the plurality of holes 104 in the central adjustment rail 102. In the example shown, the hole opposite the portion of the pin that includes the handle portion is threaded. Similarly, the end of the pin opposite the handle is also threaded. By securing the bracket 100 using one of the plurality of holes 104 along the central adjustment rail 102, the user can raise or lower the main member 82, thereby raising or lowering the axle 80 on which the bicycle B is mounted.

[0049] like Figure 3As shown, the belt tensioner assembly 108 is mounted on the main frame member 82 and is used to install and remove the belt 94 from the pulleys 16, 92, and is also used to adjust the tension of the belt 94 for proper function. The belt 94 is positioned around the tensioner assembly 108, and by adjusting the tensioner assembly 108 fore and aft, the tension on the belt 94 can be increased or decreased.

[0050] Reference Fig. 9 The locking mechanism 120 is shown to include a locking button 122 that can be in an unlocked position ( Figure 1 and Fig. 9 ) and locked position ( Figure 7 and Figure 8 ). The locking mechanism 120 includes teeth 124 that can be moved with the locking button 122 into and out of engagement with a recess 126 on the front end of the plastic molding 52 of the front curved track 50. The engagement of the teeth 124 mounted to the slide assembly 64 with the recess 126 mounted to the center base structure 44 prevents the slide structure from operating. The locking mechanism is supported on the front end cover 128 (at Fig. 9 A front end cap 128 is mounted to the front end of the slider center passage 66 of the slider assembly 64 (removed for illustration purposes). The locking button 122 is engaged by a toggle spring 130 which biases the locking button 122 to an unlocked position ( Figure 1 ) and locked position ( Figure 7 and Figure 8 ).

[0051] In operation, the slider assembly 64 is capable of moving forward and rearward along the front curved track 50 and the pair of rear curved tracks 56 in response to rider acceleration and providing an improved rider experience. The locking mechanism 120 can be engaged to prevent the slider assembly 64 from moving relative to the front curved track 50 and the pair of rear curved tracks 56, as described above.

[0052] Example embodiments are provided so that the present disclosure is thorough, and these example embodiments will fully convey the scope to those skilled in the art. Many specific details, such as examples of specific components, devices, and methods, are set forth to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, and that the example embodiments may be embodied in many different forms, and none should be construed as limiting the scope of the present disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known techniques are not described in detail.

[0053] The terms used herein are only used to describe specific example embodiments and are not intended to be limiting. As used herein, the singular forms "one" and "said / the" may also be intended to include plural forms unless the context clearly indicates otherwise. The terms "include", "comprise" and "have" are inclusive, and therefore specify the presence of the features, integers, steps, operations, elements and / or parts described, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or their groups. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless clearly identified as an execution order. It should also be understood that additional or alternative steps may be adopted.

[0054] When an element or layer is referred to as being "on another element or layer," "engaged to another element or layer," "connected to another element or layer," or "coupled to another element or layer," it may be directly on, directly engaged, connected, or coupled to another element or layer, or there may be intermediate elements or layers. Conversely, when an element is referred to as being "directly on another element or layer," "directly engaged to another element or layer," "directly connected to another element or layer," or "directly coupled to another element or layer," there may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0055] Although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts in this article, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or part from another region, layer or part. Unless the context clearly indicates, when used in this article, terms such as "first", "second" and other digital expressions do not imply order or sequence. Therefore, without departing from the teaching of the example embodiments, the first element, component, region, layer or part discussed below can be referred to as the second element, component, region, layer or part.

[0056] For ease of description, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. may be used herein to describe the relationship of one element or feature to another one or more elements or features as shown in the figure. In addition to the orientations depicted in the figures, spatially relative terms may also be intended to cover different orientations of the device in use or operation. For example, if the device in the drawings is turned over, the elements described as being "below" or "below" other elements or features will be oriented as being "above" the other elements or features. Therefore, the example term "below" can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

Claims

1. A bicycle training device, comprising: a frame assembly including a pair of support legs connected to a central structure, the central structure including a first curved track and a second curved track longitudinally spaced apart from the first curved track along the central structure, the frame assembly including a slide base having a first guide roller engaged with the first curved track and a second guide roller engaged with the second curved track, the frame assembly including a main frame member coupled to the slide base; a first axle supported by the main frame member, the first axle adapted to connect to a pair of dropouts from a bicycle, wherein the rear wheel is removed from the pair of dropouts to operably connect the bicycle to the bicycle trainer; as well as A resistance unit is drivingly coupled to the first axle.

2. The bicycle trainer of claim 1 , wherein the first curved track comprises a pair of first curved track members on opposite sides of the sliding base, and the first guide roller comprises a pair of first guide rollers on opposite sides of the sliding base, and each first guide roller engages with a corresponding one of the pair of first curved track members.

3. The bicycle trainer of claim 2, wherein the central structure includes an elongated leg, and the pair of first curved track members are disposed on opposite sides of the elongated leg.

4. The bicycle trainer of claim 1, wherein the slide base includes a rear bracket supporting a first support guide roller and an elongated guide rail connected to the rear bracket and supporting a second support guide roller.

5. The bicycle trainer of claim 4, wherein the first support guide roller comprises a pair of first support guide rollers, and the rear bracket is U-shaped, each of the pair of first support guide rollers is supported to a corresponding leg of the U-shaped rear bracket, and the main frame member is pivotally coupled between the legs of the U-shaped rear bracket.

6. The bicycle trainer of claim 1, wherein the frame assembly is vertically adjustable.

7. The bicycle trainer of claim 1, wherein the frame assembly includes an adjustment bracket pivotally connected to the main frame member and adjustably connected to the sliding base.

8. The bicycle trainer of claim 1, wherein the pair of support legs are each pivotally mounted to a mounting bracket.

9. The bicycle trainer of claim 1, wherein the pair of support legs each include a flexible and adjustable leveling support pad.

10. The bicycle trainer of claim 1 further comprising a locking mechanism selectively engageable to prevent movement between the sliding base and the central structure.

11. The bicycle trainer of claim 1 , wherein the resistance unit comprises a flywheel.

12. A bicycle training device comprising: a frame assembly including a pair of support legs connected to a central structure, the central structure including a first curved track and a second curved track longitudinally spaced apart from the first curved track along the central structure, the frame assembly including a slide base having a first guide roller engaged with the first curved track and a second guide roller engaged with the second curved track, the frame assembly including a main frame member coupled to the slide base; a first axle supported by the main frame member; as well as A resistance unit is drivingly coupled to the first axle.

13. The bicycle trainer of claim 12, wherein the first curved track comprises a pair of first curved track members on opposite sides of the sliding base, and the first guide roller comprises a pair of first guide rollers on opposite sides of the sliding base, and each first guide roller engages with a corresponding one of the pair of first curved track members.

14. The bicycle trainer of claim 13, wherein the central structure includes an elongated leg, and the pair of first curved track members are disposed on opposite sides of the elongated leg.

15. The bicycle trainer of claim 12, wherein the slide base includes a rear bracket supporting a first support guide roller and an elongated guide rail supporting a second support guide roller.

16. The bicycle trainer of claim 15, wherein the first support guide roller comprises a pair of first support guide rollers, and the rear bracket is U-shaped, each of the pair of first support guide rollers being supported to a respective leg of the U-shaped rear bracket, and the main frame member being pivotally coupled between the legs of the U-shaped rear bracket.

17. The bicycle trainer of claim 12, wherein the frame assembly is vertically adjustable.

18. The bicycle trainer of claim 12, wherein the frame assembly includes an adjustment bracket pivotally connected to the main frame member and adjustably connected to the sliding base.

19. The bicycle trainer of claim 12, wherein the pair of support legs are each pivotally mounted to the mounting bracket.

20. The bicycle trainer of claim 12, wherein the pair of support legs each include a flexible and adjustable leveling support pad.

21. The bicycle trainer of claim 12, wherein said frame assembly includes a mounting bracket connected to said pair of support legs and said central structure.

22. The bicycle trainer of claim 12, further comprising a locking mechanism selectively engageable to prevent movement between the sliding base and the central structure.

23. The bicycle trainer of claim 12, wherein the resistance unit comprises a flywheel.

24. A bicycle training device comprising: a frame assembly including a pair of support legs connected to a central structure and a sliding base slidable relative to the central structure, the frame assembly including a main frame member coupled to the sliding base; a wheel axle supported by said main frame member; a resistance unit drivingly coupled to the axle; as well as A locking mechanism is selectively engageable to prevent sliding movement between the sliding base and the central structure.

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