CN217339943U

CN217339943U - Resistance device of sports equipment wheel

Info

Publication number: CN217339943U
Application number: CN202220712293.6U
Authority: CN
Inventors: 彭贵英; 管凯; 许博文; 徐春枝; 吴刚; 景济敏; 杨红武
Original assignee: Qiaoshan Fitness Equipment Shanghai Co ltd
Current assignee: Qiaoshan Fitness Equipment Shanghai Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-02
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a resistance device of a sports equipment wheel piece, which comprises a base, at least one swing arm positioned on one side of the base and a resistance measuring device. The base is pivoted on the fixing frame of the sports equipment and is provided with a driving device. The swing arm is provided with a screw hole and a screw rod connected with the driving device. The front end of the swing arm is provided with a front through hole, and the base is provided with a front fixing shaft which penetrates through the front through hole. The rear end of the swing arm extends to one axial side of the wheel piece and is provided with a permanent magnet. The driving device can drive the screw rod to rotate, so as to drive the swing arm to axially move along the front fixed shaft, and the permanent magnet axially moves relative to the wheel piece. When the wheel rotates to enable the swing arm to swing, the base is driven by the swing arm to enable the resistance measuring device to abut against the abutting portion, and the torque of the rotation of the wheel is converted by measuring abutting pressure.

Description

Resistance device of sports equipment wheel

Technical Field

The present invention relates to sports equipment, and is especially one kind of resistance device for wheel of sports equipment.

Background

Sports equipment such as treadmills, elliptical exercise machines and rowing machines drive wheels by repeated force application to continuously rotate the wheels so as to achieve the purpose of consuming heat by applying work to human bodies. To increase the force required to pedal the drive wheel, rotational resistance is applied to the wheel, for example by changing gear ratios in a two-wheel system, and by generating eddy currents on a metal rim via magnetic forces in a single-wheel system.

The conventional reluctance type resistance device is provided with a support arm which is connected to a support frame on the sports equipment near the wheels, and the support arm is provided with a permanent magnet. The support arm can be controlled to move, thereby changing the overlapping area of the permanent magnet and the wheel. Accordingly, when a partial area of the permanent magnet overlaps the wheel, the wheel rotates and moves relative to the permanent magnet, which generates an eddy current effect to generate a magnetic resistance force to the wheel, and the larger the area of the permanent magnet overlapping the wheel, the stronger the generated eddy current and the larger the generated rotational resistance.

However, in the aforementioned known structure, since the supporting arm and the permanent magnet move in the front-rear direction and the left-right direction parallel to the wheel surface at the periphery of the wheel surface, a large clearance space needs to be ensured at the periphery of the wheel surface to prevent the supporting arm from interfering with the movement of the supporting arm, that is, a considerable set space needs to be reserved to accommodate the movement of the supporting arm for the replacement, which leads to a difficulty in more refinement and simplification of the design of the exercise equipment, and occupies a large volume as a whole.

Therefore, how to improve the above problems is the primary subject to be solved by the present invention.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a resistance device for a wheel of sports equipment, which utilizes a simple structure design to achieve the function of measuring the torque of the wheel of a flywheel, so that the required movement space is small, and the operation of the sports equipment by a user is not affected.

To achieve the above objects, the present invention provides a resistance device for a wheel of sports equipment, comprising:

a base which is pivoted on a fixing frame of the sports equipment and is provided with a driving device;

at least one swing arm arranged on one side of the base, the swing arm is connected with the driving device, one rear end of the swing arm extends to one axial side of the wheel piece, the rear end is provided with a permanent magnet, and the driving device can drive the swing arm to axially move relative to the wheel piece and enable the permanent magnet to axially move relative to the wheel piece;

and the resistance measuring device is arranged at the top end of the base and is expected to an abutting part of the fixing frame, when the wheel piece rotates to enable the swing arm to swing, the base is driven by the swing arm to enable the resistance measuring device to abut against the abutting part, and the resistance measuring device is converted into the rotating torque of the wheel piece by measuring abutting pressure.

Preferably, the number of the swing arms is two, the driving device is provided with a driving rod in a penetrating way, two ends of the driving rod are respectively positioned at two opposite sides of the driving device, the peripheral walls at two ends of the driving rod are respectively provided with a thread section with opposite threads, the two swing arms are respectively arranged at two ends of the driving rod, the two swing arms are respectively provided with a screw hole corresponding to the thread section in a threaded way, front ends of the two swing arms are respectively provided with a front through hole, the base is provided with a front fixing shaft penetrating through the front through hole, the driving device can drive the driving rod to rotate, and then the two swing arms are driven to reversely move along the front fixing shaft.

Preferably, the number of the swing arms is two, the two swing arms are respectively provided with a screw hole and respectively screwed with a screw rod with opposite threads, the two screw rods are respectively connected to two opposite sides of the driving device, a front through hole is respectively arranged at the front ends of the two swing arms, the base is provided with a front fixing shaft penetrating through the front through hole, the driving device can drive the two screw rods to rotate, and then the two swing arms are driven to move reversely along the front fixing shaft.

Preferably, the two swing arms are respectively provided with a rear through hole, and the base is provided with a rear fixing shaft penetrating through the rear through hole.

Preferably, the resistance measuring device includes a spherical pressing member, the abutting portion is attached with a strain gauge, the pressing member abuts against the abutting portion to cause the abutting portion to generate strain, and the strain gauge detects the strain of the abutting portion to generate current and converts the current into torque of the rotation of the wheel member.

The utility model has the advantages that: the adjustment of the resistance of the wheel piece is completed by driving the permanent magnet to axially displace on the wheel surface through the two swing arms, so that the required moving space reserved for the swing arms is smaller than that of the existing structure, the operation of the sports equipment by a user is not influenced, the whole occupied volume of the sports equipment can be smaller, and the utilization rate of the space environment can be improved.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic exploded perspective view of the present invention;

FIG. 3 and FIG. 4 are schematic sectional views of the present invention before and after resistance adjustment;

fig. 5 and 6 are schematic views illustrating the usage status of the present invention when measuring resistance.

Detailed Description

Referring to fig. 1 to 3, a resistance device of a wheel for exercise equipment according to the present invention is shown. The sports equipment is not limited in type, and all the sports equipment which needs to form power consumption by driving the wheels to rotate belongs to the scope of the utility model; in this embodiment, a flywheel machine is taken as an example for illustration.

The flywheel device includes a fixed frame 91 and a rotatable wheel 92, the wheel 92 can be driven by the user by stepping on the pedal, and forms power consumption. The resistance device comprises a base 1 pivoted to a fixed frame 91 at a position close to a wheel 92 by a pivot 11. The base 1 is provided with a driving device, in this embodiment a motor 12.

The two sides of the base 1 are respectively provided with a swing arm 2 with the same shape and opposite positions, the front end of the swing arm 2 is provided with a front through hole 21, and the rear end is provided with a rear through hole 22. The front through holes 21 of the two swing arms 2 are coaxially penetrated by a front fixing shaft 31 fixed to the base 1, and the rear through holes 22 are coaxially penetrated by a rear fixing shaft 32 fixed to the base 1. Accordingly, the degree of freedom of movement of the swing arms 2 is limited and can only move along the extending direction of the front fixed shaft 31 and the rear fixed shaft 32.

In addition, a screw hole 23 is formed in the middle of the two swing arms 2, a screw 33 passes through the screw hole 23 and extends into the base 1, and the two screws 33 are connected to the motor 12. The screw thread directions of the two screw rods 33 connecting the two swing arms 2 are opposite, so that when the motor 12 drives the two screw rods 33 to rotate, the two swing arms 2 can be driven by the respective screw rods 33 to generate displacement in opposite directions, and the connection mode of the two swing arms 2 and the motor 12 can also be that the two ends of the driving rod of the motor 12 are respectively provided with screw thread sections with opposite threads, and the screw thread sections of the motor 12 are respectively screwed with the screw holes 23 of the two swing arms 2, which is not limited by the present invention. The rear ends of the two swing arms 2 extend out of the two axial sides of the wheel 92, and a permanent magnet 24 is disposed thereon, and the two permanent magnets 24 are opposite to each other with different magnetic poles, and the distance between the two permanent magnets 24 can be changed along with the movement of the swing arms 2, so as to change the magnetic field strength therebetween.

The top of the base 1 is provided with a resistance measuring device 4, which includes a base 41 extending outward and a pressing member disposed on the base 41, in this embodiment, the pressing member is a spherical steel ball 42. The resistance measuring device 4 can swing together with the base 1 relative to the fixing frame 91, so that the steel ball 42 abuts against an abutting portion 43 of the fixing frame 91. The abutting portion 43 is a metal plate capable of bi-directionally bending, and a piezoelectric sheet made of piezoelectric material is attached, or a strain gauge is fixed on the fixing frame 91, when the steel ball 42 abuts against the abutting portion 43, the strain gauge can detect the strain of the abutting portion 43 based on the pressing deformation of the abutting portion 43 through the piezoelectric effect, so as to generate a micro current.

Borrow by above-mentioned structure, the utility model discloses utilize two permanent magnet 24 that are located wheel 92 both sides respectively to this wheel 92 generation magnetic field, and then when the user trampled wheel 92 and rotated, because the inside eddy current that generates of wheel 92 produces and resists its pivoted resistance, then the user can feel comparatively hard when trampling, increases the consumption promptly. When the resistance value is adjusted, if the motor 12 is started to drive the screw 33, the swing arms 2 are displaced relatively closer to or farther from each other (the swing arms 2 slide along the front and rear fixed shafts 31 and 32) depending on the direction in which the screw 33 is rotated. As shown in fig. 3 and 4, when the two permanent magnets 24 approach each other with the two swing arms 2, the magnetic field strength between the two magnets increases, and the larger the eddy current generated in the wheel 92, the larger the resistance; conversely, when the two permanent magnets 24 are relatively distant from each other along with the two swing arms 2, the magnetic field intensity therebetween decreases, and the resistance becomes smaller as the eddy current generated in the wheel 92 becomes smaller.

Accordingly, once the resistance value is adjusted, after the user steps on the wheel 92, based on newton's third law of motion, since the permanent magnet 24 applies resistance to the wheel 92, the wheel 92 will also apply reaction force to the permanent magnet 24. Accordingly, the rotating wheel 92 will push the permanent magnet 24 with an invisible reaction force, and since the base 1 has a degree of freedom for pivoting relative to the fixing frame 91, the entire base 1 will pivot, and the pivoting amplitude depends on the magnitude of the reaction force (i.e. resistance). As shown in fig. 5 and 6, when the base 1 swings upward, the steel ball 42 abuts against the abutting portion 43, and applies pressure to the abutting portion 43 according to the swing amplitude, and the strain gauge can generate a micro current based on the pressing deformation of the abutting portion 43 by the piezoelectric effect, so as to obtain the torque of the wheel 92 by converting the current amount.

In addition, the present invention can further provide a rotational speed measuring device (not shown), which can calculate or look up a table to obtain the rotational power of the flywheel device 92, i.e. the power of the user driving the flywheel device, so as to display the moving wattage value, the thermal consumption speed, the Metabolic Equivalent (MET), etc. on a display screen (not shown).

The utility model discloses a characteristics lie in that the adjustment of wheel 92 resistance sees through two swing arms 2 and drives permanent magnet 24 and accomplish at the axial displacement of wheel face, therefore the required removal space of remaining for swing arm 2 is little than current structure, so can not influence user operation sport equipment, and the whole shared volume of sport equipment also can be less, can promote space environment's rate of utilization according to this.

However, the above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention, and the replacement of equivalent elements should be considered to fall within the scope of the present invention.

In view of the above, it will be apparent to those skilled in the art that the present invention can achieve the above objects and can be applied in accordance with the provisions of the patent statutes.

Claims

1. A resistance device of a sports equipment wheel is characterized by comprising:

2. The resistance device for a wheeled piece of athletic equipment of claim 1, wherein: the quantity of this swing arm is two, this drive arrangement wears to be equipped with a actuating lever, this actuating lever both ends are located this drive arrangement's double-phase offside respectively, and the periphery wall at this actuating lever both ends is equipped with respectively one each other for the screw thread section of opposite screw thread, the both ends of this actuating lever are located respectively to two swing arms, and two swing arms are equipped with respectively one and correspond the screw of spiro union with the screw thread section, a preceding perforation is equipped with respectively to two swing arms's front end, this base is equipped with one and wears to stretch in this preceding fenestrate preceding fixed axle, this drive arrangement can drive this actuating lever rotation, and then drive two swing arms along this preceding fixed axle antiport.

3. The resistance device for a wheel of sports equipment as claimed in claim 1, wherein: the number of the swing arms is two, the two swing arms are respectively provided with a screw hole and are respectively provided with a screw rod with opposite threads in a threaded manner, the two screw rods are respectively connected to two opposite sides of the driving device, a front through hole is respectively arranged at the front ends of the two swing arms, the base is provided with a front fixing shaft penetrating through the front through hole, the driving device can drive the two screw rods to rotate, and then the two swing arms are driven to reversely move along the front fixing shaft.

4. The resistance device for a wheel of sports equipment as claimed in claim 1, wherein: the two swing arms are respectively provided with a rear through hole, and the base is provided with a rear fixed shaft penetrating through the rear through hole.

5. The resistance device for a wheel of sports equipment as claimed in claim 1, wherein: the resistance measuring device comprises a pressing and abutting part, wherein a strain gauge or a piezoelectric sheet is attached to the abutting part, the abutting part generates strain by abutting the pressing and abutting part against the abutting part, and the strain gauge or the piezoelectric sheet detects the strain value of the abutting part to convert and obtain the rotating torque of the wheel piece.

6. The resistance device for a wheeled piece of athletic equipment of claim 5, wherein: the pressing piece is spherical.