Fitness machine and resistance device thereof

Provided is a resistance device of a fitness machine comprising a wind drag unit and a magnetic resistance unit. The wind drag unit includes an air volume adjusting disc. The magnetic resistance unit includes a guide rail disc, a metal ring sheet, at least one magnetic seat, and at least one guide post. The guide rail disc has a guide disc rail through which the guide post penetrates. The magnetic seat is used to generate magnetic resistance with the metal ring sheet, and the magnetic seat has a magnetic seat rail. The guide post is connected to the air volume adjusting disc, penetrates through the guide disc rail, and extends into the magnetic seat rail. The guide post moves in the magnetic seat rail with rotation of the air volume adjusting disc to drive the magnetic seat to pivotally rotate relative to the guide rail disc.

TECHNICAL FIELD

The present application relates to fitness equipment, and in particular, to a fitness machine and a resistance device thereof.

BACKGROUND

A flywheel fitness bike imitates the feeling of real riding of a road bike, can simulate different riding slopes or resistances through a multi-level resistance device, and can train a heart, lungs, legs and whole body muscles at the same time. In addition, the flywheel fitness bike has good durability and is very suitable for trainers who want to perform High-intensity Interval Training (HIIT).

Current resistance devices include two types: a wind drag type and a magnetic resistance type. The single wind drag type resistance device or the single magnetic resistance type resistance device has a relatively small resistance adjusting range and cannot satisfy requirements of some users. Therefore, there are also flywheel fitness bikes on the market that have both wind drag and magnetic resistance, but the means of adjusting the wind drag and the magnetic resistance thereof are operated separately, which are troublesome and inconvenient to use.

SUMMARY

Therefore, an object of the present application is to provide a resistance device of a fitness machine, which is convenient for adjusting the resistance and has a relatively large resistance adjusting range.

In order to achieve the above object, a technical solution of the present application is: a resistance device of a fitness machine including a wind drag unit and a magnetic resistance unit.

The wind drag unit includes a housing, a wind wheel, a rotation shaft, and an air volume adjusting disc, the wind wheel and the air volume adjusting disc are mounted in the housing, the wind wheel is fixedly connected to the rotation shaft and is rotatable around an axis of the rotation shaft relative to the housing, the air volume adjusting disc is rotatable relative to the housing and coordinates with the housing to define a flow channel for air flow, and a flow rate of the flow channel is adjusted by rotating the air volume adjusting disc;the magnetic resistance unit is adjustably provided in the wind drag unit, and the magnetic resistance unit includes:a guide rail disc that surrounds the axis of the rotation shaft and is fixedly connected to the housing, the guide rail disc has at least one guide disc rail;a metal ring sheet that surrounds the axis of the rotation shaft and rotates with the wind wheel;at least one magnetic seat that has magnetism and is used to generate a magnetic resistance with the metal ring sheet, the magnetic seat is pivotally provided on the guide rail disc and has a magnetic seat rail; andat least one guide post, a number of the guide post being the same as a number of the magnetic disc, the guide post is connected to the air volume adjusting disc and penetrates through the guide disc rail and extends into the magnetic seat rail, the guide post moves in the magnetic seat rail with the rotation of the air volume adjusting disc to drive the magnetic seat to pivotally rotate relative to the guide rail disc so as to adjust the magnetic resistance between the magnetic seat and the metal ring sheet.

In a further improvement, the magnetic seat rail has a first end, a second end opposite to the first end, and a turning portion between the first end and the second end; when the guide post is located at the second end, the resistance device of the fitness machine only generates a wind drag, and when the guide post slides from the second end and passes through the turning portion, the resistance device of the fitness machine generates the wind drag and the magnetic resistance at the same time.

Furthermore, the magnetic seat further has a pivot point pivotally connected to the guide rail disc and a magnetic region far away from the pivot point and for generating the magnetic resistance with the metal ring sheet, the magnetic seat rail extends in a direction from the pivot point toward the magnetic region, the magnetic seat rail bends at a position near to the magnetic region, the magnetic resistance generated when the guide post slides to the first end is greater than the magnetic resistance generated when the guide post slides to the second end.

Furthermore, the at least one magnetic seat has a seat body pivotally connected to the guide rail disc and at least one magnetic member provided on the seat body, the seat body has a magnetic seat rail, the magnetic member forms the magnetic region, and a projection of the magnetic member overlaps the metal ring sheet when the guide post is located at the first end; the projection of the magnetic member does not fall within a range of the metal ring sheet when the guide post is located at the second end of the magnetic seat rail.

Preferably, the magnetic resistance unit includes two magnetic seats and two guide posts, and the magnetic seats are symmetrically arranged about the axis of the rotation shaft as a center.

Preferably, each magnetic seat has a seat body pivotally connected to the guide rail disc, and at least one magnetic member provided on the seat body.

Preferably, a position of the magnetic seat on the axis of the rotation shaft is between the guide rail disc and the metal ring sheet.

In a further improvement, the wind drag unit further includes an indicator fixed to the air volume adjusting disc, the indicator is exposed from the housing and used to indicate a resistance level, so as to indicate a magnitude of the generated resistance and facilitate a trainer to use.

Preferably, the metal ring sheet is in an annular shape, the guide rail disc is in a disc shape, a central axis of the metal ring sheet and a central axis of the guide rail disc overlap each other.

Another object of the present application is to provide a fitness machine which is convenient to adjust a wind drag and a magnetic resistance at the same time.

Thus, the fitness machine of the present application includes a frame unit, a force application assembly operationally provided on the frame unit and the resistance device of the fitness machine described-above, the resistance device of the fitness machine is used to generate a resistance and mounted on the frame unit and connected to the force application assembly.

Effects of the present invention lie in: generating a wind drag through a wind drag unit, generating a magnetic resistance through a magnetic resistance unit, adjusting a magnitude of the wind drag by rotating the air volume adjusting disc, and in a process of adjusting the wind drag, the air volume adjusting disc can drive the at least one guide post to slide relative to the guide rail disc to make the at least one magnetic seat pivotally rotate, thereby changing a degree of the overlap of the magnetic region of the magnetic seat on the metal ring sheet to adjust the magnitude of the magnetic resistance. Thus, the magnitudes of the wind drag and the magnetic resistance can be adjusted at the same time as long as the air volume adjusting disc is rotated, and the adjustment of the resistance is very convenient. On another aspect, since the wind drag and the magnetic resistance are superposed to generate the resistance, an adjusting range of the resistance is relatively large. It can generate greater movement resistance, improve training effects, and meet the needs of different trainers.

SYMBOL EXPLANATION

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present application provides accompanying drawings in order to further illustrate respective embodiments. These drawings are a part of the contents disclosed by the present application, which are mainly used to illustrate the embodiments and can explain an operation principle of the embodiments in cooperation with the relevant depiction in the description. With reference to these contents, those ordinarily skilled in the art should understand other possible embodiments and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

Now the present application is further described in conjunction with the drawings and the exemplary embodiments.

Before the present application is described in details, it should be noted that in the following description contents, the so-called front-rear direction X is based on an orientation viewed by a trainer.

With reference toFIG.1toFIG.5, a resistance device500of a fitness machine is described. The resistance device500is used to generate a multi-level movement resistance to expand a resistance adjusting range and facilitate improvement on exercise intensity. The resistance device500includes a wind drag unit6for generating a wind drag and a magnetic resistance unit7for generating a magnetic resistance.

With reference toFIG.2toFIG.4, the wind drag unit6is actually in a shape of a drum and includes a housing61, a rotation shaft62, a wind wheel63, an air volume adjusting disc64, and an indicator65. The housing61has a bottom cover611, an outer cover612attachably mounted on the bottom cover611, and a protection cover613. More preferably, the outer cover612has a plurality of air inlet regions614and a plurality of shielding regions615. Each of the air inlet regions614is a hollowed-out structure for air inflow, and each of the shielding regions615is a solid structure for blocking air inflow. The protection cover613is provided to cover the outer cover612and prevent dust, and has an effect of appearance decoration.

The rotation shaft62extends along an axis L and is rotatably mounted to the bottom cover611. The wind wheel63is sleeved on the rotation shaft62, fixedly connected to the rotation shaft62, and driven by the rotation shaft62to rotate relative to the housing61and generate the wind drag. The wind wheel63has a fixing sheet631through which the rotation shaft62penetrates and to which the rotation shaft62is fixedly connected and a plurality of blades632that are arranged at intervals along a circumferential direction and provided on the fixing sheet631.

The air volume adjusting disc64is rotatably connected to the outer cover612to rotate relative to the housing61, and the air volume adjusting disc64coordinates with the outer cover612to define a flow channel I for air inflow. More preferably, the air volume adjusting disc64has a plurality of opening regions641for air inflow and a plurality of blocking regions642for blocking the air inflow. Each opening region641is a hollowed-out structure, and each blocking region642is a solid structure. The opening regions641, the blocking regions642, the air inlet regions614, and the shielding regions615coordinate with each other to define the flow channel I, and a flow rate of the flow channel I is adjusted by rotating the air volume adjusting disc64to generate the wind drag from low to high.

The indicator65is fixed on the air volume adjusting disc64and exposed from an opening slot616of the outer cover612of the housing61. Numerals of resistance levels (not shown in the figures) are etched on the housing61. The indicator65can slide within the opening slot616with the rotation of the air volume adjusting disc64and rotate relative to the outer cover612, thereby indicating the resistance level to facilitate the trainer distinguishing visually.

The magnetic resistance unit7is adjustably provided in the housing61of the wind drag unit6, and the magnetic resistance unit7includes a guide rail disc71, a metal ring sheet72, two magnetic seats73, and two guide posts74.

The guide rail disc71and the outer cover612are located at both sides of the air volume adjusting disc64, and the guide rail disc71is substantively in a disc shape and surrounds the axis L. The guide rail disc71is fixedly connected to the outer cover612through a plurality of connection rods75penetrating through the opening regions641of the air volume adjusting disc64, and the guide rail disc71is manufactured by a material that will not be adsorbed by a magnetic stone (such as a plastic or aluminum material). The guide rail disc71has two guide disc rails711, and more preferably, the guide disc rails711are arc shaped opening slots and symmetrically arranged about the axis L as a center. The metal ring sheet72is raised and fixed to the fixing sheet631of the wind wheel63, and metal ring sheet72of this embodiment is manufactured by aluminum but can also be manufactured by other metals that can generate eddy current, such as iron or copper. The metal ring sheet72is substantively in an annular shape, surrounds the axis L, and rotates with the wind wheel63. More preferably, a projection of the metal ring sheet72on the axis L is located outside the guide rail disc71. Most preferably, the metal ring sheet72is coaxial with the guide rail disc71and the air volume adjusting disc64. The metal ring sheet72is located between the fixing sheet631and the guide rail disc71. In other variations, the metal ring sheet72can also be eccentrically provided or located between the air volume adjusting disc64and the guide rail disc71.

With further reference toFIG.3toFIG.5, the magnetic seats73have magnetism and are used to generate the magnetic resistance with the metal ring sheet72. This embodiment has two magnetic seats73. However, in other variations, the number of the magnetic seats73may be one or more than three and can be varied according to the magnetic requirement. The magnetic seats73are symmetrically arranged about the axis L as a center and can be pivotally provided on the guide rail disc71. Positions of the magnetic seats73on the axis L are located between the guide rail disc71and the metal ring sheet72. Each magnetic sheet73has a seat body731pivotally connected to the guide rail disc71and two magnetic members732provided on the seat body731. The seat body731has a pivot point733pivotally connected to the guide rail disc71and a magnetic seat rail734that is an opening slot. The magnetic seat rail734has a first end735adjacent to the pivot point733, a second end736opposite to the first end735, and a turning portion737between the first end735and the second end736. The magnetic members732are far away from the pivot point733and form a magnetic region730for generating the magnetic resistance with the metal ring sheet72, and the magnetic seat rail734extends in a direction from the pivot point733toward the magnetic region730and bends at a position near to the magnetic region730. In this embodiment, each magnetic member732is a circular magnet and provided on a side surface of the seat body731adjacent to the bottom cover611. In other variations, the magnetic members732can also be a block-shaped magnet and spliced and combined with the seat body731to form the magnetic region730.

The number of the guide posts74adapts to the number of the guide disc rails711and the number of the magnetic seats73. One end of each guide post74is connected to the air volume adjusting disc64, and the other end of each guide post74penetrates through the respective guide disc rail711and extends into the corresponding magnetic seat rail734. Thus, each guide post74can move in the respective magnetic seat rail734and the corresponding guide disc rail711at the same time with the rotation of the air volume adjusting disc64, thereby driving the respective magnetic seat73to pivotally rotate about the pivot point733as a center relative to the guide rail disc71, so that the projection of the respective magnetic seat73gradually overlaps the metal ring sheet72. Moreover, since there is generated a relative movement between the metal ring sheet72and the magnetic seats73with continuously rotation of the wind wheel63, a magnetic flux on a surface of the metal ring sheet72will be caused to change, so as to produce the eddy current and generate the magnetic resistance.

With respect toFIG.2toFIG.5, when the indicator65points at the lowest position of the resistance levels, the flow rate of the flow channel I (seeFIG.3) is at a minimum. The wind wheel63drives the metal ring sheet72to rotate relative to the housing61, the air volume adjusting disc64, the guide rail disc71, and the magnetic seats73, and the generated wind drag is at a minimum. Moreover, when the guide posts74are located at the second ends736of the magnetic seat rails734, the projections of the magnetic members732do not fall within a range of the metal ring sheet72, and at this time, the magnetic resistance unit7does not generate the magnetic resistance.

With reference toFIG.6andFIG.7, the air volume adjusting disc64(seeFIG.2) is rotated, the indicator65moves along and points at a middle position of the resistance levels, and at this time, the flow rate of the flow channel I and the wind drag are increased. Meanwhile, the guide posts74are driven to pass through the turning portions737from the second ends736, the magnetic seats73are pushed until a part of the projections of the magnetic members732overlaps the metal ring sheet72, and, due to the rotation of the metal ring sheet72, the magnetic resistance unit7starts to generate the magnetic resistance.

With reference toFIG.8andFIG.9, the air volume adjusting disc64is continuously rotated until the indicator65points at the highest position of the resistance levels, and at this time, the flow rate of the flow channel I and the wind drag are at a maximum. Moreover, the guide posts74are driven to move to the first ends735from the turning portions737, the magnetic seats73are pushed until the projections of the magnetic members732completely overlap the metal ring sheet72to make the magnetic resistance of the magnetic resistance unit7reach a maximum.

The present application adjusts the wind drag and the magnetic resistance at the same time by the guide posts74driving the magnetic seats73to pivotally rotate to make the magnetic resistance of the magnetic resistance unit7gradually increase in a direction from the second ends736toward the first ends735. This not only facilitates the resistance adjustment, but also increases an adjusting range of the resistance.

Whereby, when a trainer selects the lowest resistance level, the guide posts74are located at the second ends736, and at this time, the resistance device500only generates the minimum wind drag without generating the magnetic resistance. As the resistance level is adjusted to be high, after the guide posts74respectively slide from the second ends736and pass through the turning portions737, the wind drag is increased and the resistance device500generates the magnetic resistance at the same time. When the guide posts74are moved to the first ends735, the wind drag and the magnetic resistance reach a maximum at the same time, the resistance level is highest, and the exercise intensity is at a maximum. Thus, the trainer can adjust the wind drag and the magnetic resistance synchronously through rotation of the air volume adjusting disc64and can increase the movement resistance and improve the training effect without two operation adjustments. It is more convenient to use and can indeed achieve the purposes of the present invention.

It should be understood that the so-called guide posts74in the first embodiment are located at the second ends736of the magnetic seat rails734, and this should be understood as adjacent to or near to the second ends736in the practical situation. It is not intended that the two guide posts74must fall on the second ends736simultaneously and completely. In addition, in other variations, as along as shapes, sizes, or orientations of the magnetic seat rails734are slightly changed, the resistance level for starting to generate the magnetic resistance can be changed, and it is not intend that the magnetic resistance unit7starts to generate the magnetic resistance from a center resistance level.

With reference toFIG.10, the first embodiment of a fitness machine1of the present application is a flywheel fitness bike, and the fitness machine1includes a frame unit10, a force application assembly20, an armrest30, a saddle40, and a resistance device500.

The frame unit10extends along a front-rear direction X. The force application assembly20is two pedals and is operationally provided on a rear end of the frame unit10for pedaling by the trainers feet, respectively. The armrest30is provided on a front end of the frame unit10for being held by the trainer with both hands. The saddle40is provided on the frame unit10for the trainer to ride.

The resistance device500is mounted on the front end of the frame unit10and connected to the force application assembly20through a sprocket chain assembly (not shown in the figures). The resistance device500is used to generate resistance on the force application assembly20.

With reference toFIG.11, a second embodiment of the present application is similar to the first embodiment, and differences therebetween lie in: the fitness machine1′ is a rowing machine and includes a frame unit10′, a force application assembly20′ provided on the frame unit10′, a saddle40′ for riding, and the resistance device500. The trainer rides on the saddle40′ and applies force to the force application assembly20′ with both hands. Various rowing situations can be simulated through the resistance device500. In addition to training the abdomen, the lower body can also drive the core muscles and link the upper body muscles to improve the exercise effect.

With reference toFIG.12, a third embodiment of the present application is similar to the first embodiment, and differences therebetween lie in: the fitness machine1″ is a skiing machine and includes a frame unit10″, a force application assembly20″ provided on the frame unit10″, and the resistance device500. During a training process, lower limbs need to stand stably, forces are applied to the force application assembly20″ with both hands, various skiing slopes are simulated through the resistance device500, and training of upper limbs including triceps, back, and core muscles can be strengthened.

Thus, the resistance device500of the present application can be applied to flywheel fitness bikes, rowing machines, skiing machines, upright fitness bikes, recumbent fitness bikes, sliding step machines, elliptical trainers, or resistance exercise equipment of other types, but the applications of the present application are not limited thereto.

Although the present application is specifically exhibited and introduced in conjunction with the preferable embodiments, those skilled in the art should understand that various changes can be made on forms and details of the present application without departing from the spirit and scope of the present application defined by the accompanying claims, and all fall within the protection scope of the present application.