TW202406599A - Fitness machines with adjustable shock absorption and methods of adjusting shock absorption for fitness machines - Google Patents

Abstract

A fitness machine providing shock absorption for a user operating the fitness machine. The fitness machine includes a base, at least one member engageable by the user and moveable relative to the base during operation of the fitness machine, and a resilient body that resists movement of the at least one member towards the base so as to provide shock absorption for the user, wherein the resistance provided by the resilient body is adjustable. The fitness machine further includes a control system configured to receive from the user a shock setting corresponding to how much shock absorption is desired, and to receive other than from the user a secondary input, wherein the control system is further configured to adjust the resistance provided by the resilient body based on the shock setting and the secondary input.

Description

Fitness machine with adjustable impact adsorption and method of adjusting impact adsorption for fitness machine

The present disclosure generally relates to an exercise machine with adjustable impact absorption and a method for adjusting the stiffness of the exercise machine. Cross-references to related applications

This application claims the rights and interests of U.S. Provisional Patent Application No. 63/355,147, filed on June 24, 2022, which is incorporated herein by reference in its entirety.

The following U.S. patents provide background information and are incorporated by reference in their entirety.

US Patent No. 11,458,356 discloses a fitness machine that provides impact absorption for users who operate the fitness machine. The exercise machine includes a base and a member engageable by a user and movable relative to the base during operation of the exercise machine. The elastomeric resistance member moves in a height direction towards the base. The elastic body has first and second ends defining a length therebetween, the length being defined in a length direction perpendicular to the height direction. The barrier wall may engage the elastomer. As the member moves toward the base, the elastomer increases in length until the second end engages the barrier wall. The elastomer provides impact absorption to the user.

U.S. Patent No. 8,118,888 discloses a method for supporting the pedals of an exercise treadmill, using one or more arcuate leaf springs in the pedal support structure. Leaf springs can be made from a single member of elastic material. An adjustment mechanism can be used to change the radius of the leaf spring so that the spring strain rate of the leaf spring changes. In the case of using different leaf springs, an adjustment mechanism can be used to independently adjust the spring strain rates of the different springs.

U.S. Patent No. 5,382,207 discloses a method for improving tracking by providing an exercise treadmill with a frame including molded plastic pulleys with integrally geared belt sprockets, endless belts extending around the pulleys, and operatively connected to the rear pulley to drive the belt motor. The pulley is molded from plastic and has a diameter of approximately 9 inches. Molds and methods for producing large diameter treadmill pulleys with integrally molded sprockets are also disclosed. The pedal below the running surface of the belt is supported by elastic members. Use the front lateral belt tracking mechanism to correct the lateral position of the belt. The belt position sensor mechanism is used in combination with the front pulley pivot mechanism to maintain the belt in the desired lateral position on the pulley. The exercise treadmill also includes a lift mechanism having an internally threaded sleeve that engages a vertically aligned, non-rotating screw. It also provides an indication of the impact force of the user's foot on the belt.

U.S. Patent No. 7,628,733 discloses a method for providing support for the pedals of an exercise treadmill by securing one or more elastic members to the pedals and using movable support members to selectively engage the elastic members to provide support for the pedals. Variable elastic support. A user-operated adjustment mechanism may be used to move one or more support members longitudinally of the treadmill, thereby effectively changing the number of resilient support members supporting the pedals.

US Patent No. 6,572,512 discloses an exercise treadmill that includes various features to enhance user operation and reduce maintenance costs. By mounting the treadmill belt drive motor on a motor isolation support including elastic members, the sound and vibration in the treadmill are reduced. Another feature is the double-sided waxed tread, where one side of the tread is covered with protective tape.

US Patent No. 6,783,482 discloses a microprocessor-based exercise treadmill control system that includes various features to enhance user operation. Such features include programs that operate to: allow a group of users to control such that the treadmill initially operates at a predetermined speed; allow users to design customized exercises; allow users to switch between exercise programs while the treadmill is operating switch; and execute an automatic cooling program, in which the duration of the cooling changes with the duration of the exercise or the user's heart rate. Such features also include: a stop routine that responds to a detector for automatically stopping the treadmill when the user is no longer on the treadmill; and a frame tag module that attaches to the treadmill frame and has a function for storing runs Non-volatile memory of machine configuration and operation and maintenance data. Another feature included is the ability to display the amount of time a user spends in a heart rate zone.

This summary is provided to introduce a selection of concepts that are further described below in the detailed description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to assist in limiting the scope of the claimed subject matter.

One aspect of the present disclosure generally relates to an exercise machine that provides impact absorption for a user operating the exercise machine. The exercise machine includes: a base, at least one member engageable by the user and movable relative to the base during operation of the exercise machine, and an elastic body resisting the at least one member toward the base Move to provide impact absorption for the user, wherein the resistance provided by the elastomer is adjustable. The exercise machine further includes: a control system configured to receive a shock setting from the user corresponding to how much shock absorption is desired and to receive a secondary input other than from the user, wherein the control system Further configured to adjust the resistance provided by the elastomer based on the shock setting and the secondary input.

In some instances, the secondary input is based, at least in part, on the muscle group being targeted by the user while operating the exercise machine.

In some instances, the secondary input is based at least in part on the user's metabolic response while operating the exercise machine.

In some instances, the secondary input is based at least in part on historical adjustments to the elastic member from previous operations of the exercise machine.

In some instances, the secondary input is based on a program for operating the exercise machine over a period of time. In a further example, the program includes simulated terrain that changes during the period of time the exercise machine is operated, and wherein the secondary input is based at least in part on the simulated terrain. In a further example, the program includes random adjustments over time to the resistance provided by the elastic member, and wherein the secondary input is based at least in part on the random adjustments in the program.

Certain examples further include a sensor that measures movement of at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to generate a trend over time of the movement measured by the sensor, two of which The secondary input is based at least in part on trends resulting from movement measured by the sensor.

Certain examples further include a sensor that measures movement of at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to determine whether the user's foot is in at least one of the areas engageable by the user. position on the member, and wherein the secondary input is based at least in part on the position of the foot as determined by the control system. In a further example, the position includes both the take-off position and the landing position of the foot.

In some examples, the elastomeric system has two or more elastomeric bodies that each resist movement of at least one member toward the base, and wherein the control system is configured to act independently of one another based on impact settings and secondary inputs Adjust the resistance provided by two or more elastomers. In a further example, the exercise machine further includes a sensor that measures movement of at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to determine when the user's feet are accessible to the user. A position on at least one member of the engagement, and wherein the secondary input for independently adjusting the two or more elastomers is based at least in part on the position of the foot as determined by the control system.

Another aspect of the present disclosure generally relates to a method for making an exercise machine that provides impact absorption for a user operating the exercise machine. The method includes providing a base and at least one member engageable by a user and moveable relative to the base during operation of the exercise machine, and providing resistance to movement of the at least one member toward the base to provide impact to the user Adsorbed elastomers in which the resistance provided by the elastomer is adjustable. The method further includes constructing the control system to receive impact settings from a user corresponding to how much impact absorption is desired and to receive secondary input other than from the user. The method further includes adjusting the resistance provided by the elastomer based on the shock setting and the secondary input.

In some examples, the method further includes adjusting the resistance based on at least one of a target muscle group of the user while operating the exercise machine and a metabolic response of the user while operating the exercise machine.

In some examples, the method further includes adjusting the resistance based at least in part on historical adjustments to the elastic member from previous operations of the exercise machine. In a further example, the method further includes adjusting the resistance based at least in part on a program for operating the exercise machine over a period of time.

In some examples, the method further includes measuring movement of at least one member toward the base during operation of the exercise machine, generating a trend in the movement over time, and adjusting the resistance based at least in part on the trend.

In some examples, the elastic system has two or more elastomers, each of the elastomers resists movement of at least one member toward the base, and the resistance of the two or more elastomers is set based on the impact. and secondary inputs to adjust independently. In a further example, the method further includes determining a position of the user's foot on at least one member engageable by the user, wherein the secondary input is based at least in part on the position of the foot determined by the control system.

Another aspect of the present disclosure generally relates to a method for making an exercise machine that provides impact absorption for a user operating the exercise machine. The method includes: providing a base and at least one member engageable by a user and moveable relative to the base during operation of the exercise machine; providing an elastomer that resists movement of the at least one member toward the base, To provide impact absorption for the user; and to adjust the resistance provided by the elastomer based on previous resistance from previous operations of the exercise machine. The method further includes measuring movement of the at least one member during operation of the exercise machine, determining whether the movement of the at least one member exceeds a threshold value, and when it is determined that the movement exceeds the threshold value, further adjusting the resistance provided by the elastomer. In some examples, the method further includes storing the resistance provided by the elastomer as a previous resistance for future operations of the exercise machine.

It should be appreciated that the different aspects described throughout this disclosure can be combined in different ways, including those expressly disclosed in the examples provided, while still constituting an invention in accordance with the present disclosure.

Various other features, objects, and advantages of the present disclosure will become apparent from the following description in conjunction with the drawings.

The present disclosure generally relates to fitness machines with adjustable impact adsorption and methods for providing adjustable impact adsorption for fitness machines, including systems in which the amount of impact adsorption is adjustable. Through experimentation and development, the inventors have identified new methods for controlling the stiffness or impact absorption adjustment of an exercise machine, as well as new exercise machines constructed to operate in this manner. US Patent No. 11,458,356 describes a mechanism for adjusting the impact absorption of an exercise machine according to the present disclosure. However, it should be appreciated that the present disclosure also contemplates the use of other mechanisms to achieve adjustment of shock absorption. Unless otherwise stated, the terms "impact absorption" and "stiffness" are to be interpreted interchangeably.

Figure 1 depicts an exemplary embodiment of an exercise machine 1 incorporating an adjustable impact absorption system 40 in accordance with the present disclosure. In the embodiment shown, the exercise machine 1 is a treadmill having a belt 2 that rotates so that a user can run or walk on the belt 2 . Figures 1 and 2 show a belt 2 having a running upper strand 3 and a return lower strand 4 that circulate continuously around a belt roller 6 in a known manner. Although the present disclosure primarily discusses embodiments of the exercise machine 1 as a treadmill having a motor that rotates the belt 2, it should be appreciated that the disclosure is equally applicable to treadmills in which the belt 2 is rotated by the force of the user, as well as treadmills other than treadmills. Exercise machines other than 1 (e.g., stair climber).

The fitness machine 1 of Figures 1 and 2 is supported on a base 20, which has a front part 21 and a rear part 22, a left side 23 and a right side 24, as well as a top 25 and a bottom 26. The operation of the exercise machine 1 is controlled by a console 10 in a manner known in the art, which controls, for example, the speed of the belt 2, the inclination of the belt 2 relative to the horizontal plane (e.g., via height in a manner known in the art). Adjustment system 30), resistance level (e.g., bicycle, rowing machine, elliptical trainer, and/or treadmill where the user rotates the belt), and/or others as known in the art for operating exercise machine 1 Common Functions. The base 20 of the fitness machine 1 is supported on the legs 14 and the casters 12 .

Exercise machines currently known in the art typically have a fixed or minimum adjustable "stiffness." For example, in the case of a treadmill, this may mean the stiffness of the running surface. Stiffness settings can be adjusted to suit personal preference and/or for applications that require a particularly "soft" stiffness.

In view of this, the fitness machine 1 of Figure 1 also includes a manual controller 116 for adjusting the stiffness of the fitness machine. The hand control 116 may be moved by the user in a manner similar to systems known in the art (e.g., here, selectable among 4 stiffness or shock absorption settings). Stiffness setting may also or alternatively be accomplished in response to user input received by the console (eg, via an actuator or other mechanism discussed below). User inputs directly related to shock absorption are also referred to as first inputs or shock settings, such as a user selection on a scale between "hard" and "soft", or a selection of "cement" vs. "grass."

2-3 depict two exemplary systems 40 for providing shock absorption in accordance with the present disclosure, and specifically systems 40 in which shock absorption is adjustable to provide a range of stiffness selections. The exercise machine 1 includes a base 20 and at least one member 42 engageable by a user and thereby moved relative to the base 20 during operation of the exercise machine 1 . The member 42 shown is a running tread that supports the belt 2 in a conventional manner and moves up and down relative to the base 20 due to the impact of a user running or walking on it.

The system 40 includes one or more elastomers, here shown as leaf springs 50 , which resist movement of the member 42 towards the base 20 , in particular in the height direction HD. In certain embodiments, leaf spring 50 is made from a resilient material such as rubber, polyurethane, and/or other polymers.

The embodiments shown in Figures 2 to 4 each include four different and separate leaf springs 50 that operate independently. Each of these leaf springs 50 is constructed to function in the same or similar manner as the other leaf springs. Therefore, for the sake of simplicity, leaf spring 50 and corresponding functions are currently discussed separately. Likewise, the leaf spring 50 described herein may be used in combination with one or more other impact absorbing devices currently known in the art.

FIG. 7 depicts a close-up view of an exemplary leaf spring 50 as incorporated within the system 40 of FIGS. 2-4. The leaf spring 50 is an elastic body extending between the first end 51 and the second end 52 . In the length direction LD perpendicular to the height direction HD, the length L is defined between the first end 51 and the second end 52 . The leaf spring 50 has a downwardly opening parabolic shape and supports the member 42 at or near the apex 54 of the parabolic shape. In the example shown, member 42 rests on leaf spring 50 without being coupled to member 42 .

A first pin hole 55 extends transversely through the leaf spring 50 at a first end 51 and, in some embodiments, a second pin hole 57 also extends transversely through the leaf spring at a second end 52 . As discussed below, first pin hole 55 (and second pin hole 57, when present) are each configured to receive a pin therethrough, such as first pin 66. The first end 51 and the second end 52 have a substantially circular side profile that is thicker in the height direction HD than the elastomer therebetween to increase strength. The first pin hole 55 and the second pin hole 57 each also have a substantially circular side profile that is generally centered within the circular profiles of the first end 51 and the second end 52 . However, this is merely an exemplary configuration of the leaf spring 50, which may be constructed to have a different side profile between the first end 51 and the second end 52 to alter the configuration of the leaf spring 50. 50 provides the impact adsorption characteristics.

Figures 3 and 5-6 depict how these leaf springs 50 may be coupled between the base 20 and the member 42, here showing an adjustable impact suction system 40 similar to the system of Figure 2. The first end 51 of the leaf spring 50 is pivotally coupled to the base 20 via the bracket 60 . The bracket 60 includes a plate 62 having a bottom section 197 extending vertically away from the plate 62 . Plate 62 is coupled to the interior of base 20 , such as via welding, fasteners (eg, nuts and bolts), or other methods currently known in the art. Two ears 195 extend upwardly from the bottom section 197 and are substantially parallel to the plate 62 . A first pin hole 53 extends through each of the ears 195, the interior of the first pin hole 53 being smooth or threaded, depending on the first pin 66 to be received. The first pin hole 53 is configured to receive the first pin 66 , wherein the first pin 66 is also received by the first pin hole 55 in the first end 51 of the leaf spring 50 to pivot the leaf spring 50 Coupled to bracket 60 .

Returning to FIG. 7 , an exemplary first pin 66 is shown extending between head 143 and tip 141 with a smooth shaft therebetween. An opening 145 is defined adjacent the tip 141 for receiving the cotter pin 147 after the first pin 66 has been received by the bracket 60 (and by the first end 51 of the leaf spring 50 ). It should be appreciated that the bracket 60 depicted in FIG. 7 is only shown in partial view so as not to obscure the first pin hole 55 , for example, the ears 195 are omitted. Other types of fasteners known in the art may also or instead be used as first pin 66, including, for example, having a set screw, threaded (e.g., engaging nut 67 as shown in Figure 3), or a press-fit fastener. Mating fasteners, fasteners integrated with leaf spring 50 (e.g., via overmolding), fasteners welded to bracket 60 , and/or ears to bracket 60 that prevent lateral translation of first pin 66 195 fasteners used in combination. These same examples of first pin 66 also apply to second pin 82 of second end 52 of leaf spring 50, discussed below.

In this way, the leaf spring 50 is allowed to rotate freely about the first pin 66 but the first end 51 is prevented from translating in the length direction LD or height direction HD relative to the base 20 .

As shown in FIGS. 5-6 , the system 40 further includes an end stop 70 that is fixed, in this embodiment in an adjustable manner, relative to the base 20 . Each leaf spring 50 is provided with a separate end stop 70 in a similar manner to the bracket 60 . However, other configurations may also be considered. For the sake of simplicity, end stop 70 is mainly discussed separately. In the embodiment of FIGS. 5-6 , each end stop 70 extends from top 156 to bottom 158 with a vertical section 162 therebetween. A hole 160 is provided through the bottom 158 of the end stop 70 for mounting the end stop 70 to the base 20, specifically via the frame 100 as discussed further below. The holes 160 receive studs 166 extending upwardly from the frame 100 , in this example, four studs 166 for each end stop 70 . Nut 168 engages stud 166 to retain end stop 70 on frame 100 . It should be appreciated that other methods of coupling end stop 70 to frame 100 may be used, including welding, other types of fasteners, and/or the like.

For each end stop 70 , the bottom plate 164 extends vertically from a vertical section 162 that intersects the stop wall 80 at the front end connecting the bottom plate 164 to the top 156 . In the embodiment of FIGS. 5-6 , the barrier wall 80 is concave such that the lip 154 extends rearwardly from the top 156 where the top 156 intersects the barrier wall 80 . The profile of the stop wall 80 is configured in this manner to correspond to the profile of the second end 52 of the leaf spring 50 , for example having the same approximate diameter. Therefore, the second end 52 of the leaf spring 50 can slide forward along the base plate 164 of the end stop 70 in the length direction LD until it engages the stop wall 80 . The lip 154 extending rearwardly from the top 156 is therefore configured to prevent the second end 52 of the leaf spring 50 from moving upward in the height direction HD when contacting the stop wall 80 . It will be appreciated that the lip 154 is not necessary and other forces such as the weight of the member 42 and the user also act to prevent the second end 52 from moving upward in the height direction HD. Likewise, the leaf spring may be constructed so that the second end 52 moves via roller bearings or other mechanisms rather than sliding along the base plate 164 .

Certain embodiments of the system 40 provide that the position of each end stop 70 is adjustable in the length direction LD relative to the base 20 , which will obviously provide stiffness adjustability to the exercise machine 1 . As shown in FIGS. 3 and 7 , at the second end 52 of the leaf spring 50 (or in some embodiments discussed below, the second pin 82 extends therethrough) and the end stop 70 There is a gap G between the stopper walls 80 . This gap G is greater when the user is not exerting any force on the member 42, such as when the user is in the air while running on a treadmill. Since the stopper wall 80 limits the forward translation of the second end 52 of the leaf spring 50 , the gap G between the second end 52 and the stopper wall 80 can be adjusted to modify the amount of impact absorption provided by the leaf spring 50 and/or characteristics.

As described above, the position of the stop wall 80 of the end stop 70 can be adjusted by moving the support frame 100 to which the end stop 70 is coupled. As shown in FIGS. 4 and 5 , the support frame 100 includes a transverse member 104 extending between a first end 125 and a second end 127 extending perpendicularly to the length direction LD, and a cross member 104 extending parallel to the length direction LD. The side member 102 extends between the first end 121 and the second end 123 and the middle support member 103 extends between the first end 131 and the second end 133 . For example, the number of cross members 104, side members 102, and middle supports 103 may be different than that shown, and may be coupled together and/or integrally formed. The end stop 70 is coupled to the support frame 100 such that when a plurality of leaf springs 50 are provided, one or more leaf springs 50 (and thus the gap G associated therewith) can be adjusted together.

Referring to FIGS. 4 to 6 , the support frame 100 is translatable in the length direction LD relative to the base 20 via engagement within the track system 90 . In this embodiment, support beams 196 extend inwardly from the base 20, each of the support beams having a hole 198 in the height direction HD. The base 188 rests on top of the support beam 196 . In the example shown, the base 188 includes a plate 190 resting on top of the support beam 196 and a wall 192 extending vertically downwardly from the plate 190 . Wall 192 engages the inner edge of support beam 196 to prevent base 188 from rotating relative to support beam 196 .

An elongated hole 194 is provided through the plate 190 of the base 188 . An elongated riser 184 having an outer shape that substantially matches the inner shape of the elongated hole 194 is partially received within the elongated hole 194 . A hole 186 is defined in the height direction HD through the elongated riser 184, which in this example has a circular cross-section. As shown in FIG. 6 , the elongated risers 184 are also partially received within slots 170 defined within the support frame 100 , specifically through the side members immediately adjacent where each end stop 70 is mounted. 102. The outer shape of the elongated riser 184 is also constructed to have a width 187 corresponding to the width of the slot 170 in the support frame 100 . In the example shown, the top of the elongated riser 184 is substantially flush with the top of the side members 102 of the support frame 100 when assembled.

The flange coupler 172 has a flange top 176 and a barrel 174 extending downwardly from the flange top. A hole 178 is defined through flange coupler 172 . The barrel 174 is constructed to have an outer diameter corresponding to the inner diameter of the hole 186 in the elongated riser 184 such that the barrel 174 is received therein. When assembled, the underside of flange top 176 is approximately flush with the top of side member 102, thereby preventing movement in the height direction HD. A fastener 180 (eg, a bolt) having a head 182 is received through the flange coupler 172 , the elongated riser 184 , the base 188 , and a hole 198 in the support beam 196 and threadably engages an opposite side of the support beam 196 Nut 183 on top. It should be appreciated that alternative fastening methods known in the art may also be used. Once coupled together in this manner, the support frame 100 can translate in the length direction LD by the elongated risers 184 sliding within the slots 170, but is prevented from rotating (i.e., since the support frame 100 and the base 20 similar joints between other support beams 196), move laterally, or move in the height direction HD.

It should be appreciated that other embodiments may incorporate multiple separate support frames 100 and corresponding actuators (discussed below) for changing the position of one or more leaf springs 50 independently of other leaf springs 50 . For example, the leaf springs 50 can be adjusted independently, all together, or in groups. In some embodiments, two support frames 100 may be provided to allow for independent adjustment between the front and rear leaf springs 50 . This adjustability alone enables one set of leaf springs 50 to travel a greater distance than another set of leaf springs 50 . In another embodiment (eg, see Figure 25), the exercise machine 1 has four leaf springs 50 that generally correspond to the left front, left, and right sides of a user-engageable member 42 (eg, a running pedal). Right front, left rear and right rear areas, thereby allowing the resistance provided by the leaf spring 50 to be independently adjusted from front to rear and left to right.

The support frame 100, and particularly its position in the length direction LD, can be moved and locked in place using various forms of hardware known in the art. For example, a manual adjustment mechanism may be provided, such as a threaded hand crank or fastener coupling the support frame 100 to a discrete opening in the base 20 (e.g., the manual control of FIG. 1 in a manner known in the art 116). Alternatively, for example, support frame 100 may be locked to base 20 once in the desired position using a cam lock as is currently known in the art. The locking hardware may be electrically actuated, including an electrically actuated cam.

3-5, the support frame 100 may be moved via an actuator 110, which may be via an electrical momentary switch, the control system 200 as discussed below (including via the console 10), or as has been known in the art. Known other methods of operating the actuator may be electric, pneumatic and/or hydraulic actuators known in the art. For example, a mechanism similar to the conventional height adjustment system 30 for treadmills (see FIG. 1 ) may be used to move the support frame 100 . One such commercially available height adjustment mechanism is the treadmill tilt motor lift actuator 0K65-01192-0002/CMC-778 manufactured by P-Tech USA. The actuator 110 itself can also provide a locking function for positioning the support frame 100 . It should be appreciated that while the present disclosure focuses primarily on the actuator 110 adjusting in the lengthwise direction LD, other configurations are also contemplated.

The actuator 110 is coupled between the base 20 and the front end 101 of the support frame 100 to translate the support frame 100 relative to the base 20 in the length direction LD. Specifically, the first end of the actuator 110 is coupled to the cross member 126 of the base 20 via brackets 119 and fasteners 117 such as bolts, pins, and/or the like. The opposite end of actuator 110 is also coupled to support frame 100 in a conventional manner via brackets 119 and fasteners 117 , which brackets and/or fasteners may be provided between actuator 110 and cross member 126 as described above. The same brackets 119 and/or fasteners 117 between them. It should be appreciated that the actuator 110 may be coupled between the base 20 and the support frame 100 in alternative locations. Likewise, other types of actuators 110 may be used, including scissor actuators, rack and pinion actuators, and/or other configurations known in the art. It should be appreciated that various types of actuators 110 may also be used to adjust the shock absorption provided by one or more leaf springs 50.

The exemplary actuator 110 of FIGS. 4-5 includes a motor 112 rotatably engaged with a gearbox 113 . Rotation of the motor 112 extends or retracts the rod 114 relative to the housing 115 of the gearbox 113 in the length direction LD. Specifically, rotation of the motor 112 in the first direction causes the rod 114 to rotate through the gearbox 113, wherein the threaded engagement between the outer diameter of the rod 114 and the interior of the housing 115 causes the rod 114 to rotate relative to the motor 112 when the motor 112 rotates. The housing 115 extends or retracts in the length direction LD. Conversely, rotation of motor 112 in the opposite direction causes rod 114 to retract in the opposite manner. It will be appreciated that depending on the configuration of the actuator 110, either the rod 114 or the housing 115 may be coupled to the support frame 100 (with the other coupled to the base 20). In this manner, operating the actuator 110 causes the support frame 100 to move relative to the base 20 . As discussed above, this movement of the support frame 100 thus adjusts the gap G between the leaf spring 50 and the stop wall 80 of the corresponding end stop 70 . In the example shown, all leaf springs 50 are adjusted simultaneously and equivalently (ie by the same distance in length direction LD).

3-4, it will be appreciated that during operation of the exercise machine 1, as the member 42 moves toward the base 20, the length L between the first end 51 and the second end 52 of the leaf spring 50 is increased. . In other words, the parabolic shape of leaf spring 50 flattens during use. However, the length L of the leaf spring 50 may be limited by the engagement between the second end 52 and the stop wall 80 of the end stop 70 . Once the length L can no longer increase, the leaf spring 50 can further resist the movement of the member 42 towards the base 20, but now by a different mechanism, namely by compressing its elastic material. Therefore, adjusting the gap G between the leaf spring 50 and the stop wall 80 of the end stop 70 adjusts the allowable length L of the leaf spring 50 and therefore the resistance distribution provided by the system 40, which therefore adjusts The stiffness of the fitness machine 1 is determined.

The resistance provided by the system 40 varies depending on whether the second end 52 of the leaf spring 50 engages the stop wall 80, thereby creating two or more distinct stages. In an initial phase, referred to as the first phase P1 (discussed further below and shown in FIG. 6 ), the resistance provided by the leaf spring 50 to resist movement between the member 42 and the base 20 is primarily via the leaf spring 50 Provided with bending deformation. In other words, the length L of the leaf spring 50 may vary, increasing as the member 42 moves toward the base 20 . However, once the second end 52 engages the stop wall 80 of the end stop 70 that is fixed relative to the base 20 (or, for embodiments discussed further below, the second pin 82 extends therethrough), the second stage Starting from P2, the length L of the leaf spring 50 may no longer change. At this stage, further movement of the member 42 towards the base 20 is primarily resisted by the leaf spring 50 by compressing it, rather than by bending the leaf spring 50 as provided during stage 1 P1. In other words, the parabolic shape may no longer become wider or longer, and therefore the leaf spring 50 begins to compress. In certain embodiments, the term "primary" with respect to a resistance base means that the base contributes more than any other base (ie, flexure contributes more to drag than compression contributes to drag). In some embodiments, the base with the greatest contribution provides more than 50% of the total resistance. In some configurations, approximately 50%, 70%, 80%, 90%, 95% or other portions of stiffness are provided in stage 2 P2.

As shown in FIGS. 8 and 9A to 9D , the resistance provided by the leaf spring 50 (also referred to as spring stiffness) is therefore provided depending on whether the resistance is in stage one P1 or stage two P2. Likewise, the choice of when the transition T from phase one P1 to phase two P2 occurs (ie, the position of the member 42 relative to the base 20 ) is based on the relationship between the second end 52 of the leaf spring 50 and the stop wall 80 The gap G between. In certain embodiments, leaf spring 50 is selected such that the resistance provided in stage one P1 is substantially lower than the resistance provided in stage two P2. For example, under certain circumstances, the spring stiffness in phase one P1 does not exceed 50% of the spring stiffness in phase two P2. In a further example, the spring stiffness in stage one P1 is no more than 10% of the spring stiffness in stage two P2, or one order of magnitude lower.

It should be appreciated that although the leaf spring 50 is shown providing resistance in each of the stages (here stage one P1 and stage two P2), the resistance may also generally be thought of as a resistance profile. For example, the resistance need not be constant during a given phase (such as in phase two P2 of Figure 8), nor is it linear. It should also be appreciated that the greater the gap G between the second end 52 of the leaf spring 50 and the stop wall 80, the greater the deflection of the member 42 relative to the base 20 before entering phase 2 P2. In other words, a larger gap G provides a larger deflection within the softer stiffness of stage one P1. As discussed above, this allows the user to fully build up the stiffness of the impact absorption of the fitness machine 1, and specifically when the user feels this greater resistance in phase two P2.

It should be appreciated that the system 40 in accordance with the present disclosure may also provide additional stages. For example, instead of the first end 51 of the leaf spring 50 being pivotally fixed to the bracket 60 , the first end 51 can also be translated in the length direction LD in a similar or identical manner to the second end 52 . An example of this configuration is shown in Figure 3, specifically for the frontmost bracket 60 shown. The stop wall 81 is integral with or coupled to the bracket 60, which provides a restriction for the first end 51 of the leaf spring 50 to move rearwardly. Therefore, the stop wall 81 prevents the first end 51 of the leaf spring 50 from translating without the use of the first pin 66 . Other features may also be included to limit movement of the first end 51 in the height direction HD, such as the slot 74 discussed with respect to the end stop 70 discussed above. In this embodiment, the first end 51 has a travel gap G2 before being restrained by the stop wall 81 , thereby changing the overall resistance profile of the system 40 relative to the pivoted embodiment of the last bracket 60 shown. For example, additional stages or effects on the overall drag profile may be provided by controlling one or more leaf springs 50 separately from other leaf springs, such as the rear leaf spring 50 relative to the front leaf spring 50 . 50 has a larger gap G (and/or gap G2).

It will also be understood that the leaf springs 50 need not be shaped as shown in the figures and may or may alternatively vary in number and/or location relative to the base 20 and components 42 of the exercise machine 1 . The position of the leaf spring 50 relative to the base 20 can also be adjusted in a manner different from adjusting the gap G between the leaf spring 50 and the stopper wall 80 (and/or the gap G2 of the stopper wall 81 ). Similarly, in addition to, or as an alternative to, the length direction LD, the end stop 70 can also be adjusted in the height direction HD, further modifying the adjustment to change the resistance distribution of the leaf spring 50 Curved way.

Additional test results of the exercise machine 1 and system 40 shown in Figures 2-4 are provided in Figures 9A-9D, which test results were tested on a hydraulic MTS® test system in which the board The leaf spring 50 is compressed 0.45 inches in the height direction HD using 2 Hz and 5 Hz sinusoidal motion control modes. In these plots, the horizontal axis represents the amount of compression (the same for all four plots), while the vertical axis represents the force to achieve the corresponding deformation. The vertical axis is scaled in kip, or 1000 lbf.

The curves demonstrate that there is little difference between responses at the two test frequencies. Figure 9D depicts the results when the leaf spring 50 is constrained to its original length L (no gap G from the stop wall 80), whereby the resultant force reaches approximately 500 lbf at 0.45 inches of vertical travel. Figure 9C was tested with 25% gap G (as compared to the maximum gap or equivalently the gap G required to allow the leaf spring 50 to freely bend into a straight beam). In this case, 25% is about 2.8 mm, where the peak load reaches about 400 lbf. Figure 9B was tested at 50% gap G (approximately 5.6 mm), where approximately 250 lbf was required to compress the spring down 0.45 inches. Figure 9A was tested at 75% gap G where the maximum force was approximately 120 lbf. Overall, these results demonstrate how the presently disclosed system 40 can be used to effectively control the stiffness of the exercise machine 1 .

Figures 2-3 depict alternative configurations of end stops 70 that may be used alone or in conjunction with the end stops 70 discussed above with respect to the system 40 of Figures 5-6. In this embodiment, the stop wall 80 is formed at the end or terminus of the slot 74 defined in the sides of the end stop 70 . Specifically, the end stop 70 has a top 71 with two arms 73 extending rearwardly from the front 76 to the fingertip 77 . In the example shown, the fingertip portion 77 extends from the front portion 76 of the end stop 70 approximately the same distance as the base end 79 such that the fingertip portion 77 extends on each side of the end stop 70 . A slot 74 is formed between 77 and the base end 79 . As shown in the top view of Figure 4, providing two arms 73 for each end stop 70 allows the leaf spring 50 to be positioned between the arms 73, which positions the leaf spring 50 relative to the left side 23 of the exercise machine 1 and The right 24 remains in place.

This embodiment of the end stop 70 is constructed so that the second pin 82 extending through the second pin hole 57 in the second end 52 of the leaf spring 50 can translate in the length direction LD within the slot 74 . The second pin 82 can be inserted into the slot 74 via at least the open end 75 opposite the stop wall 80 and the front portion 76 . The clear distance C of the slot 74 is chosen based on the diameter of the second pin 82 so that no movement in the height direction HD is allowed. Accordingly, forward translation of the second end 52 of the leaf spring 50 is accomplished by the engagement between the stop wall 80 and the second pin 82 extending through the second end 52, and/or the stop wall 80 and the second pin 82 extending through the second end 52. To prevent engagement between the two ends 52 themselves.

Continuing with reference to FIGS. 2-3 , the second pin 82 may be the same as or similar to the first pin 66 , or formed from other hardware known in the art. In some examples, the second pin 82 and/or the first pin 66 are rods held in place via cotter pins and/or the like. In another example, the second pin 82 and/or the first pin 66 are overmolded to remain on the leaf spring 50 to extend outwardly therefrom, for example. Leaf spring 50 may also or instead be coupled to member 42 , such as at apex 54 , whether or not first pin 66 and/or second pin 82 are used.

The support frame 100 can be translated in the length direction LD relative to the base 20 through other configurations and mechanisms. Figure 3 depicts an embodiment of a system 40 that provides this adjustment via engagement with a different track system 90 discussed above. This rail system 90 includes a slide rail 92 coupled to the base 20 via a rail support 91 . Specifically, rail travel bracket 94 is coupled to support frame 100 , such as on side members 102 . Track travel bracket 94 slidably engages slide rail 92 , which may function similarly to conventional drawer slides with roller bearings, incorporate rack and pinion engagements, and/or other known in the art. sliding mechanism. The support frame 100 may then be locked relative to the base 20 in a manner known in the art and discussed above.

FIG. 10 depicts an exemplary control system 200 for adjusting the stiffness of the exercise machine 1 that may be manually operated by a user and/or automatically selected or modified based on a given program controlled by the console 10 . In some embodiments, the control system 200 automatically modifies the stiffness based on changing programming or other factors, such as the user's weight or fitness level. For example, when the program of exercise machine 1 (such as a treadmill) changes from simulating running on a trail to running on a road (here, changing from a soft stiffness to a hard stiffness), the stiffness may be automatically modified. In another example, each stiffness setting has an associated allowable pedal deflection range. If the actual pedal deflection is outside the range of the selected stiffness setting (for example, selecting "Hard"), the stiffness can be automatically adjusted so that the actual pedal deflection is within the allowable range. In some examples, the adjusted stiffness setting may be stored in memory for subsequent use, subsequent use with the same user (e.g., while the user is logged in to operate the exercise machine), and/or with similar weights. subsequent use by the user. Similarly, for a given user weight, there may be an allowable or preferred range of pedal deflection, whereby adjustments are made to offset any pedal deflection outside of this range (i.e., by comparison with the user's input weight ). Any of the above adjustments may be made automatically during use of the treadmill and/or during technician calibration or field testing.

Certain aspects of this disclosure are described or depicted as functional and/or logical block components or process steps that may be performed by any number of hardware, software and/or firmware components constructed to perform the specified functions. For example, some implementations employ integrated circuit components, such as memory components, digital signal processing components, logic components, lookup tables, or the like, configured to operate on one or more processors or other control devices. Perform various functions under control. Connections between functional block components and logical block components are illustrative only and may be direct or indirect and may follow alternative paths.

In some examples, such as shown in Figure 10, control system 200 communicates with each of one or more components of system 40 via communication link CL (which may be any wired or wireless link). Control system 200 is capable of receiving information and/or operating characteristics of one or more of control system 40 and its various subsystems by sending and receiving control signals over communication link CL. In one example, the communications link CL is a Controller Area Network (CAN) bus; however, other types of links may be used. It will be appreciated that the scope of the connection and communication link CL may actually be one or more common connections or links among some or all components in the exercise machine 1 . Furthermore, the communication link CL line is only meant to demonstrate that the various control components are able to communicate with each other and does not represent the actual wiring connections between the various components, nor does it represent the only communication path between the components. Additionally, system 40 may incorporate various types of communication devices and systems, and thus the illustrated communication link CL may actually represent various different types of wireless and/or wired data communication systems.

Control system 200 may be a computing system that includes a processing system 210, a memory system 220, and an input/output (I/O) system 230 for communicating with other devices, such as input devices 199 (e.g., consoles and/or or other user interface, sensors that measure movement of one or more components that can be engaged by the user, such as running pedals), and output devices 201 (e.g., actuators, motors that rotate belts, etc.), any of which One may also or alternatively be stored in the cloud 202. The processing system 210 loads and executes the executable program 222 from the memory system 220, accesses the data 224 stored in the memory system 220, and instructs the system 40 to operate as described in further detail below.

Processing system 210 may be implemented as a single microprocessor or other circuitry, or distributed across multiple processing devices or subsystems that cooperate to execute executable program 222 from memory system 220 . Non-limiting examples of processing systems include general purpose central processing units, special application processors, and logic devices.

Memory system 220 may include any storage medium that is readable by processing system 210 and capable of storing executable programs 222 and/or data 224 . Memory system 220 may be implemented as a single storage device, or distributed across multiple storage devices or subsystems that cooperatively store computer readable instructions, data structures, program modules or other data. Memory system 220 may include volatile and/or non-volatile systems, and may include removable and/or non-removable media implemented in any method or technology for storing information. Storage media may include non-transitory and/or transitory storage media, including, for example, random access memory, read-only memory, magnetic disks, optical disks, flash memory, virtual memory and non-virtual memory, magnetic storage devices or any other medium that can be used to store information and that can be accessed by the instruction execution system.

In addition to, or as an alternative to, adjustments based on inputs directly related to impact absorption (also referred to as the first input), the present inventors have identified new opportunities to control the stiffness or impact absorption of the exercise machine. In particular, the inventors have recognized that it would be advantageous to control the impact absorption of an exercise machine based on other inputs not directly related to stiffness or impact absorption, such as the speed and/or incline at which the exercise machine operates. , the user's weight, the program being performed (e.g., a specific running trail), and other factors discussed further below. These additional inputs are also called secondary inputs to distinguish shock settings directly related to shock absorption.

As discussed further below, some additional input is provided based at least in part on sensors located on the exercise machine 1 . FIG. 11 shows a sensor assembly 250 configured to detect movement of member 42 when a user operates exercise machine 1 . Sensor assembly 250 is an arc sensor, such as the 100° arc sensor produced by Cambridge IC (part number 013-0047). Sensor assembly 250 includes an arcuate sensor 252 extending in an arc between first end 254 and second end 256 . Sensor assembly 250 is shown as a 100° arc sensor, meaning that first end 254 and second end 256 are positioned to detect movement up to 100° therebetween. Arc sensor 252 is coupled to the interior of housing 260 and includes chipset 262 .

The sensor assembly 250 further includes an arm 270 extending between the first end 272 and the second end 274 . Arm 270 is pivotally coupled to housing 260 (eg, via fasteners such as nuts and bolts) for pivoting about pivot axis 276 . Coil spring 279 is located between arm 270 and housing 260 . Spring 279 biases arm 270 to cause first end 272 of arm 270 to rotate upward.

Finger 278 extends vertically from first end 272 of arm 270 . In some embodiments, the fingers 278 are rollers that are rotatable about an axis perpendicular to the first end 272 of the arm 270 . A resonant sensing target, also referred to as target 280, is disposed at or near the second end 274 of the arm 270. The sensor assembly 250 is configured such that the arc sensor 252 detects the position of the target 280 between the first end 254 and the second end 256, in which case via the target 280 and the arc sensor inductance between 252. In this manner, sensor assembly 250 detects movement of first end 272 of arm 270 by measuring the position of target 280, which position is communicated via chipset 262 via cable 282 to the controls discussed above. System 200.

This disclosure also contemplates the use of other types of sensors to detect motion, including but not limited to piezoelectric sensors, linear transducers (e.g., linear Cambridge IC sensors), and targets mounted on the edges of the pedals. and PCG), inertial measurement units, Hall effect sensors and/or optical sensors mounted on a frame adjacent to the target. By monitoring pedal deflection for a given user and a given shock absorption setting, the exercise machine 1 can be used to detect characteristics of the user's gait, such as flat-footed running, toe strike, or heel strike. This information can then be used to train users to change their running style, such as preventing injuries, improving symmetry, or improving efficiency.

Figure 12 shows the sensor assembly 250 of Figure 11 installed on the exercise machine 1 (here a treadmill). Specifically, the sensor assembly 250 is coupled to the base 20 of the exercise machine 1 such that the fingers 278 on the arms 270 of the sensor assembly 250 are in contact with the underside of the member 42 . Contact between member 42 and finger 278 is maintained by the bias provided by spring 279 (ie, biasing first end 272 of arm 270 upward).

When the user operates the exercise machine 1, it will be appreciated that the member 42 moves up and down in the height direction HD in response to the impact of the user's running on the member 42. Movement of member 42 in turn moves first end 272 of arm 270 of sensor assembly 250, which is detected and communicated to control system 200 via cable 282, as discussed above. In this manner, sensor assembly 250 instantly detects movement of member 42 during use of exercise machine 1 .

Other types of sensors may provide data used as additional input to the control system 200 . For example, a weight sensor (e.g., a piezoelectric sensor) may be used to measure the user's weight, a speed sensor may be used to measure the rotational weight of a treadmill belt or bicycle crank, and/or a Use an inclination sensor or encoder to measure the inclination of the fitness machine 1 during use (eg, the inclination angle of the treadmill pedal relative to the base plate).

As discussed above, the inventors have recognized that such additional inputs may be used to automatically adjust the impact absorption of the exercise machine 1, either alone or in conjunction with input from the user directly related to impact absorption (e.g., impact received from the user). settings) combined. Figure 13 illustrates one embodiment of a method 300 for making an exercise machine that provides impact absorption in accordance with the present disclosure. As discussed above, step 302 includes providing a base and at least one member engageable by a user and movable relative to the base during operation of the exercise machine. In the case of a treadmill, this component is the tread that supports the belt. Step 304 also proceeds as discussed above, providing an elastomer that resists movement of the member toward the base to provide impact absorption to the user. In step 306, the control system 200 is configured to receive input for adjusting the impact absorption of the exercise machine.

These inputs include a first input directly related to shock absorption (also known as shock setting), such as how much shock absorption the user desires. As discussed above, this could be, for example, a choice between options such as "hard" vs. "soft," "beach" vs. "cement" or "boardwalk," or 0 vs. 10 or 0% vs. Value between 100%. The first input may be received as a stiffness selection provided via the console 10 discussed above (eg, via the stiffness up arrow and stiffness down arrow displayed on the screen), or as a stiffness selection stored in the memory system. determine user preferences.

The inputs received by the control system 200 also include at least one secondary input not directly related to impact adsorption. Examples of secondary input include, but are not limited to, those discussed further below: • The simulated terrain in the program changes during a period of time when the fitness machine is operated; • Speed of operating fitness machines; • The inclination of at least one member during operation of the exercise machine; • The user’s target muscle groups when operating the fitness machine; • Metabolic reactions of users when operating fitness machines; • Historical adjustments to elastic members from previous operations of the fitness machine; • Over time, the resistance provided by the elastic member is randomly adjusted; • Measurement of the movement of at least one member during operation of the exercise machine; • The trend over time in the measurement of the movement of the at least one member toward the base during operation of the exercise machine; • The user's weight as provided, as stored in memory and/or as measured; • The starting position of the feet on the fitness machine; • The landing position of the feet on the exercise machine; and/or • The user’s position on the exercise machine.

Continuing with reference to FIG. 13 , step 308 adjusts the resistance provided by the elastomer (eg, in one of the ways described above) based on both the shock setting and one or more secondary inputs. For example, impact suction can be controlled based on the user's selection of a desired relatively "soft" setting, but as the program takes the user across terrain that changes in this way (e.g., starting on loose sand and moving on wooden ends on the struts), shock absorption still varies between extremely soft and soft-medium. It should be appreciated that this disclosure also contemplates methods of adjusting the impact absorption of an exercise machine using only secondary inputs.

In some embodiments, the secondary input is based on simulated terrain within the program that changes over time. For example, the treadmill products provided by Life Fitness Co., Ltd. in Rosemont, Illinois, include manual, incline and random program selection. Figures 14 and 15 respectively depict two programs 350 that can be selected for operating the exercise machine. Equation 350 of Figure 14 corresponds to running along a muddy trail in a valley between mountains. The program 350 of Figure 15 corresponds to running on a brick road through a historical part of Germany. The display is updated over time according to the user's pace in a manner known in the art (eg, using meta tags).

In addition to changing the visual display on the console as the user moves (visually simulates movement) through the program 350, the control system 200 also automatically adjusts the impact absorption of the exercise machine based on the simulated terrain shown at any given time. For example, the program 350 of Figure 14 may start with a medium stiffness when the user appears to be running on mud 352 (i.e., the bottom center of the screen is shown), and increase to medium stiffness when running on rocks 354, And drops to soft when running through rough 356.

Similarly, the routine 350 of Figure 15 may start at medium stiffness when running on first section 358 (eg, gravel) and temporarily increase to hard when running on bricks in second section 360. It should be appreciated that the control system 200 may implement other changes as the program progresses, such as modifying the speed or incline, and/or changing the stiffness differently for one portion of the machine compared to other portions (e.g., when staggering mixed terrain , the left front and left rear leaf springs become stiffer than the right front and right rear leaf springs).

Additional information for implementing other examples of secondary input listed above is now provided. Figure 16 provides a method 400 for adjusting shock absorption based on the user's target muscle groups while operating an exercise machine, which method begins in step 402 by receiving such a selection for operation. A specific muscle or target muscle is received in step 404, such as selected from an option group 406 displayed on the console 10. The speed and inclination are received at step 408 to initiate movement. Step 410 provides for retrieving stiffness settings (eg, stored in the memory system 220 of FIG. 1 ) corresponding to the muscle group selected in step 404 at the current speed and incline (such as the allowed pedal deflection range). It should be appreciated that the allowable stiffness setting may be derived by other mechanisms, such as via an algorithm, rather than by reference to a data table stored in memory. Step 412 provides for adjusting the stiffness as needed so that actual pedal deflection falls within the allowable range determined in step 410 . This stiffness adjustment (and other methods described in this article) can be done automatically, in some cases by first prompting the user for confirmation (e.g., "Increase pedal stiffness for target muscle of interest?"), or by prompting The user makes these adjustments (e.g., "Increase pedal stiffness to engage target muscles" or "Select at least a medium impact setting to engage target muscles"). The currently activated muscle group can also be displayed textually and/or as a graphic. The adjustment may also include requests or suggestions for simultaneous changes in speed or incline, together with or instead of pedal stiffness adjustments. Any adjustments to stiffness in step 410 may be further communicated to the user in step 414, such as via console 10. If the user determines in step 416 to change the speed or inclination of the fitness machine, the program returns to step 410 to once again retrieve or determine the corresponding pedal deflection range allowed by the speed, inclination, and target muscle group selection.

Figure 17 illustrates a method 500 of using speed to adjust impact suction, starting with receiving such a selection of an operation in step 502 and receiving a speed setting in step 504 in a conventional manner. Step 506 provides for retrieving or otherwise determining the stiffness setting corresponding to the speed selected in step 504 . Step 508 provides for adjusting the stiffness as needed so that actual pedal deflection falls within the allowable range determined in step 506 . In step 510, any adjustments to the stiffness in step 508 may be further communicated to the user, such as via the console 10. If the user determines in step 512 to change the speed of the fitness machine, the program returns to step 506 to retrieve or determine the corresponding pedal deflection range allowed by the speed again. In other examples, the stiffness may be adjusted without regard to actual pedal deflection, such as increasing stiffness based on increasing speed, increasing stiffness when determining whether the user is running or walking (known in the art as method judgment), or reducing stiffness during the warm-up, cool-down, or interval training recovery phase of an exercise program.

Figure 18 illustrates a method 600 of using the inclination of an exercise machine to adjust impact absorption, beginning in a conventional manner by receiving such a selection of operation in step 602 and receiving speed and incline settings in step 604. Step 606 provides for retrieving or otherwise determining stiffness settings corresponding to the inclination and speed selected in step 604 . Step 608 provides for adjusting the stiffness as needed so that actual pedal deflection falls within the allowable range determined in step 606 . Any adjustments to stiffness in step 608 may be further communicated to the user in step 610. If the user determines in step 612 to change the speed or inclination of the fitness machine, the program returns to step 606 to retrieve or determine again the corresponding pedal deflection range allowed by the speed and inclination.

Figure 19 illustrates a method 700 for using a user's metabolic response to adjust impact adsorption while operating an exercise machine by receiving such a selection of operation in step 702 and receiving a target (e.g., in step 704). Start among the selection group 706 which may include maximum calorie burn or maximum efficiency). In step 708, the user's selection of speed and inclination settings is also received in a conventional manner. Step 710 provides for retrieving or otherwise determining stiffness settings corresponding to the selected target from step 704 at the inclination and speed selected in step 708 . In some examples, goals may be supplemented by measured or estimated metabolic responses of the user, such as by based on the user (e.g., height, weight, age, gender, calculated fitness level), exercise machine, and fitness level. The machine operating mode is estimated by choosing among multiple models. The metabolic response may also or alternatively include input from various sensors in a manner known in the art. Step 712 provides for adjusting the stiffness as needed so that actual pedal deflection falls within the allowable range determined in step 710 . Any adjustments to stiffness in step 712 may be further communicated to the user in step 714. If the user is determined to change the speed or incline of the exercise machine in step 716 (and/or if the measured or estimated metabolic response changes), the process returns to step 710 to retrieve or determine the speed and inclination again. The corresponding pedal deflection range allowed by the inclination.

Figure 20 illustrates a method 800 in which historical adjustments for adjusting shock absorption become learning behaviors for future shock absorption adjustments. In this case, the process begins in step 802 by determining the user's preference for stiffness settings at different speeds and inclinations based on previously recorded movements. A user selection is received in step 804 to operate the exercise machine using these past preferred stiffness settings from step 802 . The user also selects speed and incline settings in step 804 in a conventional manner. Step 808 provides for determining the optimal stiffness setting (from step 802 ) corresponding to the inclination and speed selected in step 806 . Step 810 provides for adjusting the stiffness as needed so that actual pedal deflection falls within the allowable range determined in step 808 . Any adjustments to stiffness in step 810 may be further communicated to the user in step 812. If the user determines in step 814 to change the speed or inclination of the exercise machine, the program returns to step 808 to once again retrieve the optimal stiffness setting from step 802 corresponding to the speed and inclination.

FIG. 21 illustrates a method 900 for making small, minimally perceptible changes to impact absorption during exercise, which method begins with receiving such a selection for operation in step 902 . In step 904, a selection of the user's general preference for stiffness is received, for example, from a selection group 906 including "soft," "medium," "hard," and "full range." In step 908, the user's selection of speed and inclination is also received in a conventional manner. Step 910 provides for determining the amount of adjustment for small or "tiny" adjustments to stiffness over time, whereby adjustments remain within the general preference range received in step 904 . The allowable range of minor adjustments corresponding to each preference range may be stored in memory, or within some absolute or relative value of the set point for each preference range. For example, "soft" can be assigned 0.5" of pedal deflection as the set point, from which small adjustments are then limited to within ±0.1", 0.25", 1%, or 5% of that set point. The stiffness is then adjusted in step 912 based on the determination of step 910, such as changing at periodic intervals (eg, every 1 minute) or randomly. In step 914, adjustments to the stiffness may be further communicated to the user. The procedure can continue until the movement is complete. The inventors have identified that small adjustments to impact absorption help maintain user engagement and may correspond better to running in outdoor environments where running surface stiffness may vary from one step to another. steps. This can also be used to subtly disrupt the "repetitive" pattern of endurance gait, as the exerciser makes imperceptible adjustments in response to changes in stiffness.

FIG. 22 illustrates a method 1000 for adjusting impact suction to maintain target pedal deflection, which method begins with receiving such a selection for operation in step 1002 . Step 1004 provides for receiving a user's selection of a preferred range of pedal deflection, which may be a selection from a different deflection amount group 1006 . In step 1008, the user's selection of speed and inclination is also received in a conventional manner. Step 1010 provides for receiving a sensor measurement of actual pedal deflection (eg, average deflection over several strides) and determining whether the actual pedal deflection corresponds to the deflection range preference received in step 1004 . If it is determined in step 1012 that the actual pedal deflection is within the range, no change is made to the stiffness. If instead in step 1012 the actual pedal deflection is not within the range, the stiffness is accordingly reduced (step 1016) or increased (step 1018) as necessary so that the actual pedal deflection is within the preferred range received in step 1002. The process may return to step 1010 based on the cycle, and/or return to step 1008 if any changes to speed or incline are made.

The inventors have recognized that adjusting shock absorption to achieve target pedal deflection (whereby this target may vary based on other factors, including user selection, user weight, simulated route, and/or other inputs described herein) can particularly advantageous. In particular, the use of target pedal deflections may be used to accommodate changes or variations in the performance of exercise machine components. For example, elastomers or other components may behave differently over time in different climates (e.g., higher temperatures) due to part-to-part differences, and/or due to differences in manufacturing or maintenance (e.g., higher temperatures). , are destroyed over time and/or the material changes properties). Likewise, wear over time can increase play between components or otherwise cause changes in the resistance provided by the elastomer at a given setting.

A similar pedal deflection based adjustment method is provided in Figure 23 which now provides protection against exceeding the maximum deflection distance. The method 1100 begins at step 1102 whereby the exercise machine stores the expected amount of pedal deflection as a function of the user's weight for each stiffness setting. In step 1104, the user's selection of speed and inclination is received in a customary manner. The method determines in step 1106 whether the softest stiffness setting has been selected. If the determination at step 1106 is "yes", then step 1108 provides a sensor measurement result that receives the actual pedal deflection (for example, the average deflection over several strides) and determines whether the actual pedal deflection exceeds the value stored in the memory. The predetermined maximum deflection of the fitness machine. Maximum deflection is selected to prevent component damage and/or to prevent the pedal from bottoming out so as not to provide any impact absorption. If in step 1108 the actual pedal deflection is found to exceed the predetermined maximum deflection, then in step 1110 the stiffness is increased to reduce the actual pedal forward deflection. If instead in step 1108 the actual pedal deflection does not exceed the predetermined maximum deflection, the stiffness remains unchanged (step 1112).

Returning to step 1106, if instead the softest stiffness setting has now been selected, the process continues to step 1114. In step 1114, the user's weight is calculated based on the measured actual pedal deflection (see step 1102) by referring to the known relationship between deflection and weight for a given stiffness setting as discussed above (see step 1102). 1108). Preventing the exercise machine from selecting the softest stiffness setting if it is determined in step 1116 that the calculated weight is at or above a weight that would produce a deflection that exceeds the predetermined maximum deflection of the exercise machine when selecting the softest stiffness (via the logic of step 1102) .

In embodiments that use measurement of movement of at least one component during operation of the exercise machine, a discussion is provided above regarding the use of the sensor assembly 250 of Figures 11 and 12 as well as the use of other types of sensors. In some embodiments, movement is used to calibrate the actual impact absorption provided to the impact absorption expected by the exercise machine for a given setting. In a further embodiment, movement is measured at multiple locations on the member engaged by the user (eg, at all four corners of the treadmill tread), which is used to determine the user's stability while running. Stability can be improved by adjusting the stiffness at the rear and front separately (providing a combination of relative stiffness settings between strike and toe off, such as a stiff toe off and a softer strike, and/or Users who run near the rear end of the treadmill have increased support toward the rear of the treadmill). As discussed above, these secondary inputs may be used in conjunction with impact settings and/or with each other.

System 40 may also be configured to specifically determine the location of a user or a portion thereof during operation, specifically by comparing measurements from multiple sensor assemblies 250 . These measurements can be deflection measurements, force measurements, imaging measurements from a vision system, or any other type of measurement that can identify the user's position. Referring to the example system 40 of FIG. 25, measurements from six sensor assemblies 250 (eg, piezoelectric sensors or deflection sensors) may be compared to determine whether the user's foot contact can be engaged on the exercise machine. 1 Position of the components between the front 21 and rear 22 and between the left 23 and right 24 sides. In other words, by comparing the measurements of the frontmost, middlemost, and rearmost sensors, it is possible to determine whether the user is located between the front and the middle, or between the middle and the back. In addition, based on the amplitude of these measurements, it is possible to further determine not only whether the user is located between the front and the middle, but also the approximate position between them in the length direction (for example, closer to the front is twice as close to the middle ). The same process can be used to determine the user's position between the left and right sides, specifically using different sensors corresponding thereto. By knowing the position of the sensor relative to the exercise machine, the user's overall position relative to the exercise machine can be determined each time the user engages the exercise machine, such as with each step.

This position determination may be made specifically over time for the foot's take-off position, the foot's landing position, and/or the user's centered position (eg, between take-off and landing). As discussed above, system 40 then allows impact absorption to be independently adjusted at different areas of a member engaged by a user, such as a running board. For example, when the user is found to be positioned closer to the front 21 or back 22 than expected, or out of center between the left 23 and right 24 sides, adjustments may then be made. System 40 not only allows adjustment to suit the user's position, but also allows stiffness to be customized for different stages of fitness. In some treadmill instances, impact absorption is adjusted so that the user experiences a different stiffness when taking off than when landing, tailoring the user experience to the user's preferences, optimizing performance to minimize stress and/or To prevent injury and/or for rehabilitation purposes.

System 40 may also be configured to make impact traction adjustments when the user is detected to be moving during exercise. For example, a user may initially start positioned relatively close to the front 21 of the exercise machine 1 but gradually move toward the rear 22 over time, such as due to fatigue or a change in speed. In some instances, when comparing user positions over time, a moving average (e.g., averaged over 5 measurements or over 1 minute) and/or a threshold (e.g., a position of at least 6 inches) is used change). This provides that shock absorption adjustments are not performed for transient events and/or more frequently than the user desires.

In some examples, a series of deflection sensors, such as those discussed above, are provided along the treadmill's tread. The measurements provided by the deflection sensors are used by the control system to determine the deformation shape of the pedal, such as by dynamically curve fitting the deflection sensor readings and analyzing patterns in these curves. Through experimentation and development, the inventors have recognized that when the first downward movement is detected during the gait cycle, a first peak is observed in the deflection measurement where the user's foot strikes Maximum at the position on the pedal. This allows footstep position to be determined from front to back and/or left to right depending on the sensor configuration. Maximum deformation occurs when the user's feet are just below the central body mass, where the maximum deformation is greatest. This allows determining the user's center or average position. The next peak in the pedal deformation curve then corresponds to the user's toe-off position, and the next position is again maximum at the toe-off position. In this manner, measurements from multiple sensors can be used to identify specific locations of engagement with the pedals. This can also be monitored as an ongoing process to dynamically adjust stiffness and other parameters, as discussed in this article. Figure 26 shows exemplary data collected from five deflection sensors located at different locations along the pedal, whereby the data measured at each time reveals where on the pedal each engagement occurred.

Figure 24 illustrates yet another example of a method for adjusting impact adsorption in accordance with the present disclosure. As will be apparent, this method 1200 details one example of autonomous handling of stiffness adjustments. This may be particularly advantageous for users who are unsure of which impact adsorption choice to make and/or do not want to make such a choice. In the example shown, step 1202 provides the user to first select "Automatic Deflection" in which the impact suction will be automatically adjusted to provide a controlled amount of pedal deflection by controlling components such as those discussed above. to provide. From the perspective of the fitness machine 1, step 1202 also refers to the fitness machine receiving a selection to operate in an automatic deflection motion. It should be appreciated that in other embodiments, the exercise machine 1 may be preset to this mode, or perform this autonomous stiffness control when a "quick start" exercise mode is selected. In some examples, step 1202 further includes retrieving previously stored stiffness settings for shock absorption, as discussed further below.

Step 1204 provides the exerciser with selection of speed and/or incline and movement initiation, and thus, the exercise machine receives the speed and/or incline selection and operates accordingly. This disclosure contemplates speed and/or incline configurations that are not user-initiated, such as provided by an exercise program or a coach leading a group of exercisers. Likewise, speed and incline selection can be made with no movement, such as where the exercise machine operates with previously set or default values.

In step 1206, sensors such as those described above measure the deflection of a member engageable by a user (eg, a treadmill treadmill). In the example step 1206 shown, these measurements are taken over several steps and then averaged, whereby the average value (which may be a moving average) is then stored in the memory system by the control system. One or more predetermined thresholds are compared. For example, the threshold may be a single value, or there may be multiple thresholds, such as a lower threshold (eg, first pedal deflection distance) and a separate upper threshold (eg, second pedal deflection distance). ). In the example of a target deflection of 10 mm, an upper threshold of 12 mm and a lower threshold of 8 mm are provided, whereby measurements outside of these upper and lower thresholds cause the system to automatically Change the stiffness and/or advise the user to change the stiffness to achieve this target deflection. A similar purpose is achieved with a single threshold of 2 mm, whereby action is taken if the measured deflection deviates from the target by more than the 2 mm threshold. It should be appreciated that this disclosure may refer to a measurement value being outside a threshold or exceeding a threshold to mean that a threshold has been triggered (e.g., below a lower threshold and/or above an upper threshold). value).

If it is determined in step 1208 that the measured deflection (or its average value) is below the lower threshold, then in step 1210 the shock absorption is adjusted to reduce stiffness to thereby increase pedal deflection. As discussed above, this can be performed by controlling an actuator that varies the shock absorption provided by an elastomer such as a leaf spring.

Alternatively, if it is determined in step 1208 that the measured deflection is not below the lower threshold value, the method 1200 continues to step 1212 . If it is determined in step 1212 that the measured deflection is higher than the upper limit threshold, then in step 1214 the shock absorption is adjusted to increase stiffness, thereby reducing pedal deflection. If instead the measured deflection in step 1212 is not above the upper threshold, method 1200 continues to step 1216 whereby operation continues with the current stiffness setting (ie, no shock absorption adjustment is performed). The stiffness settings are then recorded in step 1218 for future retrieval. These stiffness settings can be saved with the user's profile and retrieved at a later login for future workout sessions.

The inventor has recognized that saving the stiffness setting in step 1218 advantageously provides a starting point to expedite the process of controlling shock absorption to automatically provide the desired pedal deflection in the future. This may result in fewer changes to the exercise machine 1 when the user activates it, thereby reducing use and wear of the actuators and other components. Additionally, this prevents the exerciser from having to start with a sub-optimal stiffness setting before taking measurements and performing stiffness adjustments.

Method 1200 is also advantageously used for any changes over time that require different stiffness settings even for the same user. For example, elastomers can be degraded or replaced (affecting the resistance they provide), a user can gain or lose weight, a user can change their gait, or other changes to the machine or user can affect the pedals Deflect. In such situations, method 1200 not only does provide for automatically adjusting shock absorption accordingly, but also saves the new stiffness settings in step 1218 for future use.

The inventors have recognized that by controlling the impact absorption of an exercise machine as described herein, the user has an improved experience and increased realism. Likewise, the control system 200 may use trends identified in the movement data to detect changes in the system over time (e.g., elastic members becoming more flexible as parts wear over time), trigger changes in parts, or absorb adsorption during impacts. Compensation is made in settings adjustments to provide the desired results and/or to prevent damage to components over time.

The functional block diagrams, sequences of operations, and flow diagrams provided in the figures represent exemplary architectures, environments, and methods for implementing novel aspects of the present disclosure. Although for the purpose of simplifying explanation, the methods included herein may be in the form of functional diagrams, sequences of operations, or flowcharts, and may be described as a sequence of actions, it is understood and appreciated that the methods are not limited by the order of the actions. , because some actions according to the methods may occur out of the order shown and described herein and/or concurrently with such other actions. For example, those of ordinary skill in the art will understand and understand that a method may alternatively be represented as a series of related states or events, such as in a state diagram. Furthermore, not all acts illustrated in a method may be required by novel implementations.

Although some of the methods described above and shown in Figures 16-24 are described in detail from the perspective of a user or exerciser using the exercise machine 1 disclosed herein, those of ordinary skill in the art will It is recognized that these user-centered steps also reveal the steps or actions of the fitness machine 1 . For example, an exerciser's selection of a muscle-directed exercise (step 402 of Figure 16) must also be interpreted as revealing an exercise machine configured to perform the steps of receiving such selection of muscle-directed exercises. Additionally, examples provided throughout this disclosure should be construed as non-limiting. For example, although step 416 of FIG. 16 provides for the exerciser to change the speed or incline (thus thereby revealing an exercise machine that performs the step of changing the speed or incline), it should be appreciated that the change in speed or incline need not be caused by User initiated. In some cases, such changes in speed or incline may be guided by an exercise program performed, for example, by an exercise machine or a fitness instructor leading a group of people.

This written description uses examples to disclose the invention, including the best mode, and also to enable one of ordinary skill in the art to make and use the invention. Certain terminology has been used for the sake of brevity, clarity and understanding. No unnecessary limitations other than those required by the prior art may be inferred therefrom as such terms are used for descriptive purposes only and are intended to be broadly construed. The patentable scope of the invention is defined by the patent claim, and may include other examples that occur to those of ordinary skill in the art. If such other examples have features or structural elements that do not differ from the literal language of the claimed scope, or if they include equivalent features or structural elements that do not materially differ from the literal language of the claimed scope, such other examples are intended to be Examples are included within the scope of the patent application.

without

The present disclosure is described with reference to the following drawings.

[FIG. 1] is a perspective view of an exercise machine incorporating an exemplary adjustable impact adsorption system in accordance with the present disclosure;

[Figure 2] is a cross-sectional view of the lower part of the fitness machine in Figure 1;

[Fig. 3] is a close-up cross-sectional view of the embodiment similar to Fig. 2;

[Figure 4] is a top view of the lower part of the fitness machine in Figure 1;

[Fig. 5] is an exploded perspective view depicting a system similar to that of Fig. 2;

[Figure 6] is a close-up view of the system in Figure 5;

[FIG. 7] is a perspective view of an exemplary elastomer such as may be incorporated into an adjustable impact adsorption system in accordance with the present disclosure;

[Figure 8] depicts illustrative data regarding an adjustable impact adsorption system in accordance with the present disclosure, specifically stiffness as a function of gap size between the elastomer and the end stop;

[Fig. 9A] to [Fig. 9D] depict further illustrative information regarding testing of an adjustable impact adsorption system in accordance with the present disclosure;

[FIG. 10] depicts an exemplary control system for operating an adjustable impact adsorption system in accordance with the present disclosure;

[Figure 11] depicts a sensor used to measure movement during operation of an exercise machine;

[Fig. 12] depicts the sensor of Fig. 11 installed on the exercise machine of Fig. 2;

[Fig. 13] is a flow chart of a method for adjusting impact adsorption according to the present disclosure;

[FIG. 14] and [FIG. 15] depict examples of terrain within a program for adjusting shock absorption in accordance with the present disclosure;

[Fig. 16] to [Fig. 24] are flowcharts, each of which depicts an example of a method for adjusting impact adsorption according to the present disclosure;

[Fig. 25] is a schematic diagram of another example of an exercise machine according to the present disclosure, in which four elastic bodies can be independently adjusted to adjust impact absorption.

[Fig. 26] It is a graph of example data for determining the position where the user is engaged with the exercise machine.

Claims (20)

A fitness machine that provides impact absorption for a user who operates the fitness machine. The fitness machine includes: a base; At least one member engageable by the user and movable relative to the base during operation of the exercise machine; an elastomer that resists movement of the at least one member toward the base to provide impact absorption for the user, wherein the resistance provided by the elastomer is adjustable; and A control system configured to receive from the user a shock setting corresponding to how much shock absorption is desired and to receive a secondary input other than from the user, wherein the control system is further configured to receive based on The impact setting and the secondary input adjust the resistance provided by the elastomer. The fitness machine of claim 1, wherein the secondary input is based at least in part on a target muscle group of the user when operating the fitness machine. The fitness machine of claim 1, wherein the secondary input is based at least in part on a metabolic reaction of the user when operating the fitness machine. The exercise machine of claim 1, wherein the secondary input is based at least in part on historical adjustments to the elastic member from previous operations of the exercise machine. The fitness machine of claim 1, wherein the secondary input is based on a program for operating the fitness machine within a period of time. The exercise machine of claim 5, wherein the program includes simulated terrain, the simulated terrain changes during the period of operation of the exercise machine, and wherein the secondary input is at least partially based on the simulated terrain. The exercise machine of claim 5, wherein the program includes random adjustments to the resistance provided by the elastic member over time, and wherein the secondary input is based at least in part on the random adjustments in the program. The exercise machine of claim 1, further comprising a sensor that measures the movement of the at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to generate A trend over time of the movement measured by the sensor, wherein the secondary input is based at least in part on the trend resulting from the movement measured by the sensor. The exercise machine of claim 1, further comprising a sensor that measures the movement of the at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to determine A position of a foot of the user on the at least one member engageable by the user, and wherein the secondary input is based at least in part on the position of the foot as determined by the control system. For example, the fitness machine of claim 9, wherein the position includes both a jumping position and a landing position of the foot. The exercise machine of claim 1, wherein the elastic body is two or more elastic bodies, each of the elastic bodies resists the movement of the at least one member toward the base, and wherein the control system is configured to be based on the The shock setting and the secondary input adjust independently of each other the resistance provided by two or more elastomers. The exercise machine of claim 11, further comprising a sensor that measures the movement of the at least one member toward the base during operation of the exercise machine, wherein the control system is further configured to determine A position of a foot of the user on the at least one member engageable by the user, and wherein the secondary input for independently adjusting the two or more elastic bodies is based at least in part on The control system determines the position of the foot. A method for manufacturing a fitness machine that provides impact absorption for a user operating the fitness machine, the method includes: providing a base and at least one member engageable by the user and movable relative to the base during operation of the exercise machine; providing an elastomer that resists movement of the at least one member toward the base to provide impact absorption for the user, wherein the resistance provided by the elastomer is adjustable; Constructing a control system to receive from the user a shock setting corresponding to how much shock absorption is desired and to receive a secondary input other than from the user; and The resistance provided by the elastomer is adjusted based on the impact setting and the secondary input. The method of claim 13, further comprising adjusting the resistance based on at least one of a target muscle group of the user when operating the fitness machine and a metabolic response of the user when operating the fitness machine. The method of claim 13, further comprising adjusting the resistance based at least in part on historical adjustments to the elastic member from previous operations of the exercise machine. The method of claim 13, further comprising adjusting the resistance based at least in part on a program for operating the exercise machine over a period of time. The method of claim 13, further comprising measuring movement of the at least one member toward one of the bases during operation of the exercise machine, generating a trend of the movement over time, and adjusting based at least in part on the trend. The resistance. The method of claim 13, wherein the elastic system has two or more elastomers, each of the elastomers resists movement of the at least one member toward the base, and wherein the two or more elastomers The resistances are independently adjusted based on the shock setting and the secondary input. The method of claim 18, further comprising determining a position of a foot of the user on the at least one member engageable by the user, wherein the secondary input is based at least in part on the foot determined by the control system the location. A method for manufacturing a fitness machine that provides impact absorption for a user operating the fitness machine, the method includes: providing a base and at least one member engageable by the user and movable relative to the base during operation of the exercise machine; Provide an elastic body that resists movement of the at least one member toward the base to provide impact absorption for the user; adjusting the resistance provided by the elastomer based on a previous resistance from a previous operation of the exercise machine; Measuring the movement of the at least one member during operation of the exercise machine; Determine whether the movement of the at least one component exceeds a threshold value; When it is determined that the movement exceeds the threshold value, further adjust the resistance provided by the elastic body; and The resistance provided by the elastomer is stored as the previous resistance for future operations of the exercise machine.