Exercise machine and dual resistance structure combining wind resistance and magnetic resistance thereof

Abstract

An exercise machine and a dual resistance structure combining wind resistance and magnetic resistance are disclosed. The dual resistance structure combining wind resistance and magnetic resistance includes a rotating shaft, a wind resistance unit, and a magnetic resistance unit. The wind resistance unit is disposed on the rotating shaft, and includes blades arranged annularly. Each blade has a notch recessed in an axial direction of the rotating shaft. The magnetic resistance unit includes a magnetic resistance member and a magnetic resistance wheel. The magnetic resistance wheel is disposed on the rotating shaft. The notch of each blade faces the magnetic resistance wheel to form a moving space between the magnetic resistance wheel and the notch. When the magnetic resistance member is moved relative to the magnetic resistance wheel along a radial direction of the magnetic resistance wheel, part of the magnetic resistance member is movable in the moving space.

Claims

1. A dual resistance structure combining wind resistance and magnetic resistance, comprising: a rotating shaft; a first mounting plate and a second mounting plate affixed to said rotating shaft in axially-spaced relationship between the first and second mounting plates; a wind resistance unit disposed on the rotating shaft, the wind resistance unit including a turning disc fixed to said first mounting plate and a plurality of blades attached annularly to said turning disc, each blade of the plurality of blades having a free end, a coupling end opposite to said free end, a notch recessed in said each blade in an axial direction of the rotating shaft between said free and coupling ends, and an intermediate portion disposed between said notch and the coupling end, wherein a width of said each blade at said free end and said intermediate portion exceeds a width of the blade at said notch and at said coupling end, and wherein a peripheral edge of the turning disc is configured with a plurality of engaging grooves each recessed in the radial direction, said coupling end of said each blade being coupled in a respective one of said plurality of engaging grooves; and a magnetic resistance unit including a magnetic resistance member and a magnetic resistance wheel, the magnetic resistance wheel being disposed on the rotating shaft and attached to said second mounting plate, the notch of each of the blades facing the magnetic resistance wheel to form a moving space defined between the magnetic resistance wheel and said each blade at the notch, wherein when the magnetic resistance member is moved relative to the magnetic resistance wheel along a radial direction of the magnetic resistance wheel, part of the magnetic resistance member is movable in the moving space defined between the magnetic resistance wheel and said each blade at the notch.

2. The dual resistance structure combining wind resistance and magnetic resistance as claimed in claim 1, wherein the magnetic resistance member is located on a periphery of the magnetic resistance wheel, the magnetic resistance member includes a first portion, an opposing second portion and a connecting portion connecting the first portion and the second portion, a groove is defined among the first portion, the second portion and the connecting portion, the first portion or/and the second portion is provided with a magnetic member, and the second portion and the connecting portion are movable in the moving space when the groove is selectively moved in or out of the magnetic resistance wheel.

3. The dual resistance structure combining wind resistance and magnetic resistance as claimed in claim 1, wherein the turning disc has a diameter less than that of the magnetic resistance wheel, and said each blade extends in the radial direction beyond the magnetic resistance wheel.

4. The dual resistance structure combining wind resistance and magnetic resistance as claimed in claim 3, wherein the coupling end of said each blade has an L-shaped notch and a fixing piece extending from a periphery of the L-shaped notch, said each blade further has an engaging block extending in the radial direction, the fixing piece of said each blade is locked to the turning disc, and the engaging block is engaged in said respective engaging groove, thus fixing said each blade to the turning disc.

5. An exercise machine having a dual resistance structure combining wind resistance and magnetic resistance, comprising: an exercise machine body, the exercise machine body having a control unit and an operating portion; a rotating shaft, disposed on the exercise machine body and connected with the operating portion; a first mounting plate and a second mounting plate affixed to said rotating shaft in axially-spaced relationship between the first and second mounting plates; a wind resistance unit disposed on the rotating shaft, the wind resistance unit including a turning disc fixed to said first mounting plate and a plurality of blades attached annularly to said turning disc, each blade of the plurality of blades having a free end, a coupling end opposite to said free end, a notch recessed in said each blade in an axial direction of the rotating shaft between said free and coupling ends, and an intermediate portion disposed between said notch and the coupling end, wherein a width of said each blade at said free end and said intermediate portion exceeds a width of the blade at said notch and at said coupling end, and wherein a peripheral edge of the turning disc is configured with a plurality of engaging grooves each recessed in the radial direction, said coupling end of said each blade being coupled in a respective one of said plurality of engaging grooves; and a magnetic resistance unit including a magnetic resistance member and a magnetic resistance wheel, the magnetic resistance wheel being disposed on the rotating shaft and attached to said second mounting plate, the magnetic resistance member being pivotally connected to the exercise machine body and connected with the control unit, the notch of each of the blades facing the magnetic resistance wheel to form a moving space defined between the magnetic resistance wheel and said each blade at the notch, wherein when the magnetic resistance member is moved relative to the magnetic resistance wheel along a radial direction of the magnetic resistance wheel, part of the magnetic resistance member is movable in the moving space defined between the magnetic resistance wheel and said each blade at the notch.

6. The exercise machine as claimed in claim 5, wherein the magnetic resistance member is located on a periphery of the magnetic resistance wheel, the magnetic resistance member includes a first portion, an opposing second portion and a connecting portion connecting the first portion and the second portion, a groove is defined among the first portion, the second portion and the connecting portion, the first portion or/and the second portion is provided with a magnetic member, and the second portion and the connecting portion are movable in the moving space when the groove is selectively moved in or out of the magnetic resistance wheel.

7. The exercise machine as claimed in claim 5, wherein the turning disc has a diameter less than that of the magnetic resistance wheel, and said each blade extends in the radial direction beyond the magnetic resistance wheel.

8. The exercise machine as claimed in claim 7, wherein the coupling end has an L-shaped notch and a fixing piece extending from a periphery of the L-shaped notch, said each blade further has an engaging block extending in the radial direction, the fixing piece of said each blade is locked to the turning disc, and the engaging block is engaged in said respective engaging groove, thus fixing said each blade to the turning disc.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an exploded view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention;

(2) FIG. 2 is a perspective view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention;

(3) FIG. 3 is a cross-sectional view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention, illustrating that part of the magnetic resistance member is located in the moving space so that part of the magnetic member corresponds to the magnetic reluctance wheel;

(4) FIG. 4 is a perspective view of the exercise machine having the dual resistance structure combining wind resistance and magnetic resistance of the present invention;

(5) FIG. 5 is a side view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention, illustrating that part of the magnetic resistance member is located in the moving space so that part of the magnetic member corresponds to the magnetic resistance wheel;

(6) FIG. 5A is another perspective view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention, illustrating the magnetic resistance unit is connected with the cable and the spring;

(7) FIG. 6 is a side view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention, illustrating that the magnetic resistance member is further moved into the moving space so that the entire magnetic member corresponds to the magnetic reluctance wheel; and

(8) FIG. 7 is a cross-sectional view of the dual resistance structure combining wind resistance and magnetic resistance of the present invention, illustrating that the magnetic resistance member is further moved into the moving space so that the entire magnetic member corresponds to the magnetic resistance wheel.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(9) Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

(10) As shown in FIG. 1 through FIG. 3, the present invention discloses a dual resistance structure combining wind resistance and magnetic resistance comprises a rotating shaft 1, a wind resistance unit 2, a magnetic resistance unit 3, and a plurality of screws A. The rotating shaft 1 rotates about an axial direction X. The rotating shaft 1 has a first connecting portion 11 and a second connecting portion 12. The first connecting portion 11 is formed with four first perforations 111. The second connecting portion 12 is formed with four second perforations 121. The wind resistance unit 2 includes a turning disc 22. The turning disc 22 is formed with four third perforations 221. The third perforations 221 correspond to the respective first perforations 111. The screws A are screwed into the third perforations 221 and the first perforations 111 to lock the turning disc 22 to the first connecting portion 11. The periphery of the turning disc 22 has a plurality of engaging grooves 222 each recessed in a radial direction Y. The wind resistance unit 2 further includes a plurality of blades 21 arranged annularly. Each of the blades 21 has a notch 211 recessed in the axial direction X of the rotating shaft 1. The blades 21 extend in the radial direction Y. Each of the blades 21 has a coupling end 212. The coupling end 212 has an L-shaped notch 213 and a fixing piece 214 extending from the periphery of the L-shaped notch 213. The L-shaped notch 213 and the fixing piece 214 are formed by stamping. Each of the blades 21 further has an engaging block 215 extending in the radial direction Y. The fixing piece 214 of each of the blades 21 is connected to the turning disc 22 by the screw A, and the engaging block 215 is engaged in the corresponding engaging groove 222, so that each of the blades 21 is fixed to the turning disc 22. The magnetic resistance unit 3 includes a magnetic resistance member 31 and a magnetic resistance wheel 32. The magnetic resistance wheel 32 is formed with four fourth perforations 321. The fourth perforations 321 correspond to the respective second perforations 121. The screws A are screwed into the fourth perforations 321 and the second perforations 121 to lock the magnetic resistance wheel 32 to the second connecting portion 12. All the blades 21 extend in the radial direction Y beyond the magnetic resistance wheel 32. The diameter of the turning disc 22 is less than the diameter of the magnetic resistance wheel 32.

(11) The notch 211 of each of the blades 21 faces the magnetic resistance wheel 32 to form a moving space 33 between the magnetic resistance wheel 32 and the notch 211. The magnetic resistance member 31 is movable relative to the magnetic resistance wheel 32 along the radial direction Y of the magnetic resistance wheel 32. The magnetic resistance member 31 includes a first portion 311, an opposing second portion 312, and a connecting portion 313 connecting the first portion 311 and the second portion 312. A groove 34 is defined among the first portion 311, the second portion 312 and the connecting portion 313. The first portion 311 or/and the second portion 312 is provided with a magnetic member 314. In this embodiment, three magnetic members 314 are provided on each of the first portion 311 and the second portion 312. The magnetic members 314 are permanent magnets. The magnetic members 314 of the first portion 311 and the second portion 312 correspond to each other. The magnetic resistance member 31 can be moved in the radial direction Y of the magnetic resistance wheel 32, so that the first portion 311 or the second portion 312 is selectively moved in or away from the magnetic resistance wheel 32, thereby controlling the magnetic resistance of the magnetic resistance wheel 32. When the magnetic resistance member 31 is moved relative to the magnetic resistance wheel 32, the second portion 312 and the connecting portion 313 are moved in the moving space 33 freely.

(12) As shown in FIG. 4, the present invention further discloses an exercise machine. The dual resistance structure combining wind resistance with magnetic resistance is mounted on an exercise machine body 4. The exercise machine further includes a control unit 5 and an operating portion 41. The control unit 5 is fixed on the exercise machine body 4 and is configured to operate the magnetic resistance member 31. The magnetic resistance member 31 is pivotally connected to the exercise machine body 4. The exercise machine body 4 takes an exercise bike as an example. In this embodiment, the operating portion 41 is two pedals. The user continuously steps on the operating portion 41 to drive the rotating shaft 1 (as shown in FIG. 1) to rotate. The control unit 5 is configured to control the magnetic resistance member 31 to approach or move away from the magnetic resistance wheel 32. The operating portion 41 is configured to operate the wind resistance unit 2 and the magnetic resistance wheel 32 to rotate. The control unit 5 and the operating portion 41 can be operated in the same manner as the conventional exercise machine, which will not be repeated hereinafter.

(13) As to the wind resistance structure, please refer to FIG. 3 and FIG. 5. When the rotating shaft 1 rotates, the rotating disc 22 and the magnetic resistance wheel 32 are driven to rotate, and the blades 21 on the rotating disc 22 are rotated to generate a wind resistance. The magnitude of the wind resistance will be affected by the size of the blades 21. The blades 21 extend outwardly beyond the magnetic resistance wheel 32. Because the length of the blades 21 is long, the resistance generated by rotation of the wind resistance unit 2 is large, thereby providing an exercising effect through the wind resistance.

(14) As to the magnetic resistance structure, please refer to FIG. 3, FIG. 4, FIG. 5 and FIG. 5A. The control unit 5 pulls a driving block 7 through a cable 6. One end of the cable 6 is connected to the driving block 7, and the other end of the cable 6 is connected to the control unit 5. (The control unit 5 is not shown in FIG. 5A). The driving block 7 is fixed to a shaft member 8. The shaft member 8 is rotatably pivotally connected to the exercise machine body 4. The magnetic resistance member 31 is also fixed to the shaft member 8, so that the magnetic resistance member 31 and the driving block 7 are rotated synchronously with the shaft member 8 as the axis. Furthermore, a spring 9 is disposed between the exercise machine body 4 and the magnetic resistance member 31 to provide the magnetic resistance member 31 a return elastic force. Through the cable 6 to pull the driving block 7, the magnetic resistance member 31 and the driving block 7 are moved synchronously to approach magnetic resistance wheel 32 with the shaft member 8 as the axis, and the spring 9 is stretched. If the cable 6 is released, the spring 9 will pull the magnetic resistance member 31 and the driving block 7 away from the magnetic resistance wheel 32 synchronously. When the magnetic resistance member 31 of the magnetic resistance unit 3 is moved toward the magnetic resistance wheel 32, the second portion 312 and the connecting portion 313 of the magnetic resistance member 31 moves freely in the moving space 33. In the state shown FIG. 5, only part of the magnetic member 314 is moved into the magnetic resistance wheel 32. At this time, the magnetic resistance of the magnetic resistance wheel 32 is smaller.

(15) Please refer to FIG. 5A, FIG. 6 and FIG. 7. When it is necessary to increase the magnetic resistance, the magnetic resistance member 31 is pulled by the cable 6, and the magnetic resistance member 31 is moved in the radial direction Y (as shown in FIG. 1) toward the magnetic resistance wheel 32. At this time, the second portion 312 of the magnetic resistance member 31 is still movable in the moving space 33 freely. In the state shown in FIG. 6 and FIG. 7, all the magnetic members 314 are moved into the area where the magnetic resistance wheel 32 is located. At this time, the magnetic resistance of the magnetic resistance wheel 32 is larger. When it is necessary to reduce the magnetic resistance, the cable 6 can be released, so that the spring 9 pulls the magnetic resistance member 31 and the driving block 7 away from the magnetic resistance wheel 32 synchronously, and part of the magnetic member 314 leaves the area where the magnetic resistance wheel 32 is located to reduce the magnetic resistance.

(16) Referring to FIG. 4, when the user exercises on the exercise machine body 4, he/she can step on the operating portion 41 of exercise machine body 4 to rotate the rotating shaft 1 for doing exercise. The operating portion 41 transmits power to the wind resistance unit 2, so that the wind resistance unit 2 is rotated to generate wind resistance. When the user intends to increase the exercise intensity, the control unit 5 controls the magnetic resistance unit 3 to operate in the above-mentioned manner to adjust the magnitude of the magnetic resistance for increasing the exercise intensity.

(17) Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.