CA2202337C - Magnet-controlled rowing exerciser - Google Patents
Magnet-controlled rowing exerciser Download PDFInfo
- Publication number
- CA2202337C CA2202337C CA002202337A CA2202337A CA2202337C CA 2202337 C CA2202337 C CA 2202337C CA 002202337 A CA002202337 A CA 002202337A CA 2202337 A CA2202337 A CA 2202337A CA 2202337 C CA2202337 C CA 2202337C
- Authority
- CA
- Canada
- Prior art keywords
- wheel
- magnet
- exerciser
- resistance
- spiral spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0076—Rowing machines for conditioning the cardio-vascular system
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0076—Rowing machines for conditioning the cardio-vascular system
- A63B2022/0079—Rowing machines for conditioning the cardio-vascular system with a pulling cable
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
- A63B21/0051—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using eddy currents induced in moved elements, e.g. by permanent magnets
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/22—Resisting devices with rotary bodies
- A63B21/225—Resisting devices with rotary bodies with flywheels
Abstract
The present invention relates to a magnet-controlled rowing exercisor which utilizes an adjustable magnet-controlled wheel mechanism such that the user can adjust resistance in exercise. A magnet controlled wheel mechanism includes a magnet conductive fly wheel and cooperating magnet set for providing variably adjustable resistance. The mechanism further includes a coaxially mounted leading wheel for securing an end of the pulling string in a spiral configuration and a spiral spring for exerting a counter-rotational force on the leading wheel. In use rotation of the leading wheel caused by extending the string creates tension in the spiral spring sufficient to retract the string for repeated motion. The magnetic resistance has the advantage of being less subject to fatigue than common known devices, quieter that prior art devices and more easily adjustable in resistance.
Description
Name of the creation: Magnet-controlled rowing exerciser Summary of the creation:
This creation is regarding a magnet-controlled rowing exerciser, consisting of one front main frame, one slider bar, and one stopping board. Its major feature is the adjustable magnet-controlled wheel mechanism set between the two arms of the front main frame. The mechanism generates proper resistance when the user pulls the string, so as to achieve exercising results. Furthermore, the spiral spring in the mechanism can pull the string back to the wheel, to facilitate repetitive pulling-l0 extending activities and the feature of simple resistance adjustment.
The present invention relates in one aspect to a magnet controlled rowing exerciser composing;
- a frame member including an upright member, a slider bar and stepping plate means;
- a pulling bar supported on said upright member;
- a seat adapted for sliding movement on said slider bar; and - a magnet controlled wheel mechanism rotatably mounted on said frame and operatively connected to said pulling bar by a string, said magnet controlled wheel 20 including a magnet conductive fly wheel and a magnet means for providing variably adjustable resistance to said fly wheel.
In accordance with one embodiment, the magnet controlled wheel mechanism of the rowing exerciser may further include a coaxially mounted leading wheel for securing an end of said string in a spiral configuration and a spiral spring means for exerting a counter-rotational force on said leading wheel. In a preferred embodiment, the magnet conductive fly wheel can include a unidirectional bearing to confine said fly wheel to rotate in only one direction.
In accordance with another embodiment of the above aspect of the invention, the spiral spring means may include an active end for engaging the leading wheel whereby rotation of said leading wheel caused by extending said string creates tension in said spiral spring sufficient to retract said string. In a preferred embodiment, the magnet means for providing variably adjustable resistance to said fly wheel can include a magnet set mounted on a hinged arm to said frame for variable positioning adjacent said fly wheel.
The present invention relates in a second aspect to a rowing exerciser with magnetic to resistance comprising:
a) a mainframe including a pair of side bars, a front end and a rear end, the rear end further including a pair of foot plates and wheel means for engaging a support surface and transporting the exerciser;
b) a tilt beam extending from the front end, the tilt beam including an upper portion and a lower portion, a pressing wheel means disposed at the upper portion and a leading wheel means disposed at the lower portion;
c) a slider bar including a front end and a rear end, the front end being pivotally connected to the rear end of the mainframe, a support plate pivotally mounted to the rear end of the bar for engaging a support surface, and a seat 20 slidably mounted on the bar;
d) a magnet controlled wheel mechanism supported on the mainframe, the mechanism including a magnetically conductive fly wheel, a drive wheel, the fly wheel and drive wheel being coaxially mounted for synchronous rotation with each other, a unidirectional bearing means restricting the fly wheel to one direction of rotation, a spiral spring having an active end secured to the drive wheel, and a magnet set position adjacent the periphery of the fly wheel for imparting shear resistance thereto;
-1 a-e) a pull cord wound around the drum wheel and including an outer end extending through the leading wheel means and pressing wheel means of the tilt beam, and a pulling handle secured to the outer end of the cord; and f) wherein when a user sitting on the seat of the slider bar pulls the pulling handle to extend the cord, the drive and fly wheels rotate synchronously in one direction and under shear resistance imparted by the magnet set, and the spiral spring is caused to be tightly wound, whereupon release of the cord by the user causes only the drive wheel to rotate in an opposite direction under the action of the spiral spring to retract the cord and permit same to be rewound on the drive wheel.
l0 In a preferred embodiment of this second aspect, the adjustment means can include a knob mounted on the tilt beam, a rope connecting the knob to the magnet set, and a spring for imparting a bias to the magnet set. The rowing exerciser may also include a counter-timer clock mounted on the tilt beam.
In yet another embodiment of this aspect, the tilt beam may further include an upper recess, the pressing wheel means may include a pair of opposed wheels disposed within the upper recess, a supporter mounted adjacent the upper recess for supporting the pulling handle, a lower recess, the leading wheel means may include 20 a mount and a wheel secured at the lower recess. In more a preferred embodiments, the exerciser may further include a detachable bolt for selectively securing the slider bar in either a horizontal position of use or an inclined position for transport of the exerciser.
Detailed description:
The creation is regarding a rowing exerciser, specifically one that utilizes an adjustable magnet-controlled wheel mechanism such that the user can adjust resistance in exercise for expected effect. It is a practical, convenient, and completely new creation.
-1 b-As Figure 9 shows, so-called rowing exerciser is an exercising equipment such that:
the user sits on slider 10 and uses both hands to pull bar 11; bar 11 strains string 12 connected to it; string 12 in turn extracts the shaft of spring air-pressure cylinder 13 at the other end of it; spring air-pressure cylinder 13 then generates appropriate resistance for exercise. When the user releases the strain, the spring reacts to put string 12 and bar 11 to their original positions, so that the user can repeat her pulling exercise.
When the user would like to adjust the resistance for exercise, she has to turn the leaking valve on spring air-pressure cylinder 13. The resistance can be determined l0 by the amount of leakage. In other words, larger resistance requires less leakage, while the opposite requires more.
However, the spring in spring air-pressure cylinder 13 is apt to fatigue as a result of long-term repeated stretching, which reduces exercise effects. At the same time, for aesthetic consideration, spring air-pressure cylinder 13 is -1 c-generally positioned under the exerciser, which causes inconvenience for adjustment.
Besides those rowing exercisers that utilize spring air pressure cylinder 13 for exercise resistance and string restoration, there are ones based on air-resistance or user-weight mechanism design. But, so-called air resistance fan mechanism 14 (as figure 10 shows) generates tremendous noise. Moreover, user-weight mechanism 15 (as figure 11 shown) utilize the weight of the user as the source of resistance, which over-burdens the user.
Therefore, to overcome the shortcomings associated with the above-mentioned rowing exercisers in usage and design, the creator of this project has continued to research and improve. The design, which is based on a magnet set and shear resistance from a magnet-conductive flying wheel, enables the wheel co-axial with the flying wheel to generate resistance for effective exercise. Furthermore, by turning the adjusting nut the distance between the magnet set and the flying wheel can be easily changed, so as to vary magnetic resistance. Hereby, the objective of the present invention -- practical features such as easy adjustment of resistance and elimination of noise -- can be achieved.
Here a better example accompanied by figures is used to illustrate the techniques, approach, and effectiveness of the present invention.
Brief description of the figures:
Figure 1: Three-dimensional drawing of one embodiment of the present invention.
Figure 2: Partial assembly overview of an embodiment of the present invention.
Figure 3: Assembly three-dimensional drawing of a better utilization example of the present invention.
Figure 4: Assembly side view of an embodiment of the present invention.
Figure 5: String-pulling and spring-rotating actions illustration of the present invention.
Figure 6: String-pulling and spring-rotation actions illustration of the present invention.
Figure 7: Packing illustration of the present invention.
Figure 8: Movement-after-packing illustration of the present invention.
Figure 9: Side view of conventional rowing exerciser I.
This creation is regarding a magnet-controlled rowing exerciser, consisting of one front main frame, one slider bar, and one stopping board. Its major feature is the adjustable magnet-controlled wheel mechanism set between the two arms of the front main frame. The mechanism generates proper resistance when the user pulls the string, so as to achieve exercising results. Furthermore, the spiral spring in the mechanism can pull the string back to the wheel, to facilitate repetitive pulling-l0 extending activities and the feature of simple resistance adjustment.
The present invention relates in one aspect to a magnet controlled rowing exerciser composing;
- a frame member including an upright member, a slider bar and stepping plate means;
- a pulling bar supported on said upright member;
- a seat adapted for sliding movement on said slider bar; and - a magnet controlled wheel mechanism rotatably mounted on said frame and operatively connected to said pulling bar by a string, said magnet controlled wheel 20 including a magnet conductive fly wheel and a magnet means for providing variably adjustable resistance to said fly wheel.
In accordance with one embodiment, the magnet controlled wheel mechanism of the rowing exerciser may further include a coaxially mounted leading wheel for securing an end of said string in a spiral configuration and a spiral spring means for exerting a counter-rotational force on said leading wheel. In a preferred embodiment, the magnet conductive fly wheel can include a unidirectional bearing to confine said fly wheel to rotate in only one direction.
In accordance with another embodiment of the above aspect of the invention, the spiral spring means may include an active end for engaging the leading wheel whereby rotation of said leading wheel caused by extending said string creates tension in said spiral spring sufficient to retract said string. In a preferred embodiment, the magnet means for providing variably adjustable resistance to said fly wheel can include a magnet set mounted on a hinged arm to said frame for variable positioning adjacent said fly wheel.
The present invention relates in a second aspect to a rowing exerciser with magnetic to resistance comprising:
a) a mainframe including a pair of side bars, a front end and a rear end, the rear end further including a pair of foot plates and wheel means for engaging a support surface and transporting the exerciser;
b) a tilt beam extending from the front end, the tilt beam including an upper portion and a lower portion, a pressing wheel means disposed at the upper portion and a leading wheel means disposed at the lower portion;
c) a slider bar including a front end and a rear end, the front end being pivotally connected to the rear end of the mainframe, a support plate pivotally mounted to the rear end of the bar for engaging a support surface, and a seat 20 slidably mounted on the bar;
d) a magnet controlled wheel mechanism supported on the mainframe, the mechanism including a magnetically conductive fly wheel, a drive wheel, the fly wheel and drive wheel being coaxially mounted for synchronous rotation with each other, a unidirectional bearing means restricting the fly wheel to one direction of rotation, a spiral spring having an active end secured to the drive wheel, and a magnet set position adjacent the periphery of the fly wheel for imparting shear resistance thereto;
-1 a-e) a pull cord wound around the drum wheel and including an outer end extending through the leading wheel means and pressing wheel means of the tilt beam, and a pulling handle secured to the outer end of the cord; and f) wherein when a user sitting on the seat of the slider bar pulls the pulling handle to extend the cord, the drive and fly wheels rotate synchronously in one direction and under shear resistance imparted by the magnet set, and the spiral spring is caused to be tightly wound, whereupon release of the cord by the user causes only the drive wheel to rotate in an opposite direction under the action of the spiral spring to retract the cord and permit same to be rewound on the drive wheel.
l0 In a preferred embodiment of this second aspect, the adjustment means can include a knob mounted on the tilt beam, a rope connecting the knob to the magnet set, and a spring for imparting a bias to the magnet set. The rowing exerciser may also include a counter-timer clock mounted on the tilt beam.
In yet another embodiment of this aspect, the tilt beam may further include an upper recess, the pressing wheel means may include a pair of opposed wheels disposed within the upper recess, a supporter mounted adjacent the upper recess for supporting the pulling handle, a lower recess, the leading wheel means may include 20 a mount and a wheel secured at the lower recess. In more a preferred embodiments, the exerciser may further include a detachable bolt for selectively securing the slider bar in either a horizontal position of use or an inclined position for transport of the exerciser.
Detailed description:
The creation is regarding a rowing exerciser, specifically one that utilizes an adjustable magnet-controlled wheel mechanism such that the user can adjust resistance in exercise for expected effect. It is a practical, convenient, and completely new creation.
-1 b-As Figure 9 shows, so-called rowing exerciser is an exercising equipment such that:
the user sits on slider 10 and uses both hands to pull bar 11; bar 11 strains string 12 connected to it; string 12 in turn extracts the shaft of spring air-pressure cylinder 13 at the other end of it; spring air-pressure cylinder 13 then generates appropriate resistance for exercise. When the user releases the strain, the spring reacts to put string 12 and bar 11 to their original positions, so that the user can repeat her pulling exercise.
When the user would like to adjust the resistance for exercise, she has to turn the leaking valve on spring air-pressure cylinder 13. The resistance can be determined l0 by the amount of leakage. In other words, larger resistance requires less leakage, while the opposite requires more.
However, the spring in spring air-pressure cylinder 13 is apt to fatigue as a result of long-term repeated stretching, which reduces exercise effects. At the same time, for aesthetic consideration, spring air-pressure cylinder 13 is -1 c-generally positioned under the exerciser, which causes inconvenience for adjustment.
Besides those rowing exercisers that utilize spring air pressure cylinder 13 for exercise resistance and string restoration, there are ones based on air-resistance or user-weight mechanism design. But, so-called air resistance fan mechanism 14 (as figure 10 shows) generates tremendous noise. Moreover, user-weight mechanism 15 (as figure 11 shown) utilize the weight of the user as the source of resistance, which over-burdens the user.
Therefore, to overcome the shortcomings associated with the above-mentioned rowing exercisers in usage and design, the creator of this project has continued to research and improve. The design, which is based on a magnet set and shear resistance from a magnet-conductive flying wheel, enables the wheel co-axial with the flying wheel to generate resistance for effective exercise. Furthermore, by turning the adjusting nut the distance between the magnet set and the flying wheel can be easily changed, so as to vary magnetic resistance. Hereby, the objective of the present invention -- practical features such as easy adjustment of resistance and elimination of noise -- can be achieved.
Here a better example accompanied by figures is used to illustrate the techniques, approach, and effectiveness of the present invention.
Brief description of the figures:
Figure 1: Three-dimensional drawing of one embodiment of the present invention.
Figure 2: Partial assembly overview of an embodiment of the present invention.
Figure 3: Assembly three-dimensional drawing of a better utilization example of the present invention.
Figure 4: Assembly side view of an embodiment of the present invention.
Figure 5: String-pulling and spring-rotating actions illustration of the present invention.
Figure 6: String-pulling and spring-rotation actions illustration of the present invention.
Figure 7: Packing illustration of the present invention.
Figure 8: Movement-after-packing illustration of the present invention.
Figure 9: Side view of conventional rowing exerciser I.
Figure 10: Side view of conventional rowing exerciser II.
Figure 11: Side view of conventional rowing exerciser III.
As figures 1 and 2 show, the rowing exerciser consists of:
One front main frame 20. In front of it there is one hollow tilted beam 21. On tilted beam 21 there attach one pulling-bar supporter 34, one counter-timer clock 22, one adjusting nut 23, and near the tip of it there is one indentation or recess 24. Inside indentation 24 two pressing wheels 25 locate at the top and the bottom. Next, where appropriate near the bottom of front main frame 20, there is one shaped component and another indentation or recess 27 for the installation of one leading wheel 28. Under leading wheel 28, on both sides of front main frame 20 and tilted beam 21 two side-bars 29 are installed. Where appropriate on two side-bars 29 there are located one pair of axle-oriented holes 30 and one pairof connection-oriented holes 31, for the installation of adjustable magnet-controlled wheel mechanism 50 and slider bar 35. Then, at the other ends of two side-bars 29 one grounding bar 33 with two stepping plates 32 is attached. At each end of grounding bar 33, there is one pushing wheel 49.
One slider bar 35. With holes 36 at both sides of its front end and bolt 37, it connects to side-bars 29 of front main frame 20 at their connection holes 31. On top of it there is one slider 38 that slides. At its bottom, on each of the two sides there is one through hole 39, together with bolt 40, for its connection with back supporting plate 41.
One back supporting plate 41. It is arc-shaped, with one connecting hinge 42 at its top.
Besides connecting hinge 42 is one half-circle, concave part 43 to match the shape of the end of slider 35, so as to tilt up back supporting plate 41. Consequently back supporting plate 41 and grounding bar 33 form the grounding point which supports the exerciser (as figure 4 shows).
Adjustable magnet-controlled wheel mechanism 50 is installed between two side bars 29 of front main frame. It consists of one magnet-conductive flying wheel 51, one wheel 52, one string 53, one spiral spring cover 54, one spiral spring set 55, and one magnet set 56.
Axial hole 57 of flying wheel 51 is installed one unidirectional bearing 58, which confines flying wheel 51 to rotate in only one direction. Subsequently, one through axle 59, together with two stopping bearing 60, fixes flying wheel 51, wheel 52, and spiral spring set 55 between axle-oriented holes 30. In the meantime, spiral spring cover 54 has been locked at locking holes 61 of spiral spring set 55, and affixed at screw holes 47 connecting side bars 29 through two screws 48. Active end 62 is fixed at wheel 52. After being rotated for several rounds, active end 62 goes under leading wheel 28 and inside tilted beam 21 of front main frame 20, then goes out between two pressing wheel 25. The other end of string 53 is connected to one pulling bar 64. Under magnet set 56 there is one hinge 65, together with one bolt 66 and one pushing-up spring 67, for setting it at positioning board 68 of two side bars 29. Near the top of magnet set 56 there is one connecting unit 69 to hook one spring 70 and one adjusting rope 71. The other end of spring 70 is in turn hooked on one salient unit 72 on positioning board 68.
As shown in figures 2 and 4, when the assembly of adjustable magnet-controlled wheel mechanism is completed, magnet set 56 happens to sit at the edge of flying wheel 51, and can generate desirable shear resistance. Therefore, as the user turns adjusting nut 23, the actions of adjusting rope 71 and spring 70 move magnet set 56 towards or away from the edge of flying wheel 51, and consequently the resistance is easily adjusted.
When the assembly of the above mechanism is completed, protection cover 80 is applied on both sides of front main frame 20. Thus a better assembly illustration is formed, as shown in figure 3.
In terms of the way string 53 is driven, when the user pulls pulling bar 64 and string 53, the wheel will subsequently rotate and release string that is initially in a spiral. On the other hand, the rotation of wheel 52 will initiate flying wheel 51 to rotate synchronously, through co-axle 59. However, as mentioned above, because shear resistance from magnet 56 acts on flying wheel 51 and subsequently wheel 52, the user will feel expected resistance when pulling string 53, and have the results of exercise. Now, as figure 6 shows, because active end 62 of spiral spring set 55 has been fixed at respective positioning hole 63 of pulley 53 and rotated, the spiral spring is in a tight spiral -- since spiral spring set 55 is fixed, only its active end 62 acts with the wheel. Then, as shown in figure 5, when the user releases the string, the reaction of the spiral spring and active end 62 will counter-rotate wheel 52, and subsequently restall string 53 and pulling barforrepetitive exercise.
Nevertheless, because there is one unidirectional bearing 58 installed at axial hole 57 of flying wheel 51, the flying wheel will not counter-rotate as wheel 52 does.
In figure 7, because slider bar 35 is only attached at connecting holes 31 of both side bars 29 of front main frame 20, when in use there should be one bolt 46 and end through hole 45 to position it at screw hole 44 of the level part of positioning board 68, so as to avoid rocking. To pack the exerciser, the user takes off bolt 46, tilt slider bar 35 straight, then fasten bolt 46 via same through hole 45 at another screw hole 441 on the parpenticular part of positioning board 68, for saving space.
Finally, as figure 8 shows, to move the exerciser, the user inclines it to keep grounding bar 33 grounded. Since both sides of grounding bar 33 are equipped with pushing wheels 49, it is easy to move the exerciser around.
To sum up, the present invention *magnet-controlled rowing exerciser* indeed makes many practical improvements; moreover, there is no similar product or design in market and literature before this application. Therefore, it complies to the requirements for a new patent with *unprecedented* and *advanced* practicality, and should be protected by the patent law. Hereby, the creator applies for a patent according to the law.
One magnet-controlled rowing exerciser, consisting of:
One front main frame. In front of it there is one hollow tilted beam. On the tilted beam there attached one pulling-bar supporter, one counter-timer clock, and one adjusting nut, and near the tip of it there is one indentation. Inside the indentation two pressing wheels 25 locate at the top and the bottom. Next, here appropriate near the bottom of the front main frame, there are one shaped component and another indentation for the installation of one leading wheel. Under the leading wheel, on both sides of the front main frame and the tilted beam installed two side-bars. Where appropiate on the two side-bars there locate one pair of axel-oriented holes and one pair of connection-oriented holes, for the installation of the adjustable magnet-controlled wheel mechanism and the slider bar. Then, at the other ends of the two side-bars, there attaches one grounding bar with two stepping plates. At each end of the grouding bar, there is one pushing wheel.
One slider bar. With the holes at both sides of its front end and a bolt, it connects to the two side-bars ~of the front main frame at their connection holes. On top of it there is one slider that slides. At its bottom, on each of the two sides there is one though hole.
One back supporting plate. It is arc-shaped, with one connecting hinge at its top. Besides the connecting hinge there is one half-circle, concave part to match the shape of the end of the slider, so as to tilt up back the supporting plate. Consequently the back supporting plate and the grounding bar form the grounding point which supports the exerciser.
The magnet-controlled rowing exerciser, as described in item 1 of this application, has its adjustable magnet-controlled wheel mechanism installed between the front main frame and comprise of one magnet-conductive flying wheel, one wheel, one string, one spiral spring cover, one spiral spring set, and one magnet set. At the axial hole of the flying wheel there is one unidirectional bearings to confine the flying wheel to rotate in only one direction. Subsquently, one through axle, together with two stopping bearing, fixes the flying wheel, the wheel, and the spiral spring set between the axle-oriented holes. In the mean time, the spiral spring cover has been locked at the locking holes of the spiral spring set, and affixed at the screw holes connecting the side bars through two screws. The active rnd is fixed at the wheel. After being rotated for several rounds, the active end goes under the leading wheel and inside the tilted beam of the front main frame, then goes out between the two pressing wheel. The other end of the string is connected to one pulling bar. Under the magnet set there is one hinge, together with one bolt and one pushing-up spring, for setting it G
at the positioning board of the two side bars. Near the top of the magnet set there is one connecting unit to hook one spring and one adjusting rope. The other end of that spring is in turn hooked on one salient unit on the positioning board.
To pack the magnet-controlled rowing exerciser, as described in item 1 of this application, the user takes off the bolt, tilt the slider bar straight, then fasten the bolt via same though hole 4.5 at another screw hole 441 on the parpenticular part of positioning board 68, for saving space.
Figure 11: Side view of conventional rowing exerciser III.
As figures 1 and 2 show, the rowing exerciser consists of:
One front main frame 20. In front of it there is one hollow tilted beam 21. On tilted beam 21 there attach one pulling-bar supporter 34, one counter-timer clock 22, one adjusting nut 23, and near the tip of it there is one indentation or recess 24. Inside indentation 24 two pressing wheels 25 locate at the top and the bottom. Next, where appropriate near the bottom of front main frame 20, there is one shaped component and another indentation or recess 27 for the installation of one leading wheel 28. Under leading wheel 28, on both sides of front main frame 20 and tilted beam 21 two side-bars 29 are installed. Where appropriate on two side-bars 29 there are located one pair of axle-oriented holes 30 and one pairof connection-oriented holes 31, for the installation of adjustable magnet-controlled wheel mechanism 50 and slider bar 35. Then, at the other ends of two side-bars 29 one grounding bar 33 with two stepping plates 32 is attached. At each end of grounding bar 33, there is one pushing wheel 49.
One slider bar 35. With holes 36 at both sides of its front end and bolt 37, it connects to side-bars 29 of front main frame 20 at their connection holes 31. On top of it there is one slider 38 that slides. At its bottom, on each of the two sides there is one through hole 39, together with bolt 40, for its connection with back supporting plate 41.
One back supporting plate 41. It is arc-shaped, with one connecting hinge 42 at its top.
Besides connecting hinge 42 is one half-circle, concave part 43 to match the shape of the end of slider 35, so as to tilt up back supporting plate 41. Consequently back supporting plate 41 and grounding bar 33 form the grounding point which supports the exerciser (as figure 4 shows).
Adjustable magnet-controlled wheel mechanism 50 is installed between two side bars 29 of front main frame. It consists of one magnet-conductive flying wheel 51, one wheel 52, one string 53, one spiral spring cover 54, one spiral spring set 55, and one magnet set 56.
Axial hole 57 of flying wheel 51 is installed one unidirectional bearing 58, which confines flying wheel 51 to rotate in only one direction. Subsequently, one through axle 59, together with two stopping bearing 60, fixes flying wheel 51, wheel 52, and spiral spring set 55 between axle-oriented holes 30. In the meantime, spiral spring cover 54 has been locked at locking holes 61 of spiral spring set 55, and affixed at screw holes 47 connecting side bars 29 through two screws 48. Active end 62 is fixed at wheel 52. After being rotated for several rounds, active end 62 goes under leading wheel 28 and inside tilted beam 21 of front main frame 20, then goes out between two pressing wheel 25. The other end of string 53 is connected to one pulling bar 64. Under magnet set 56 there is one hinge 65, together with one bolt 66 and one pushing-up spring 67, for setting it at positioning board 68 of two side bars 29. Near the top of magnet set 56 there is one connecting unit 69 to hook one spring 70 and one adjusting rope 71. The other end of spring 70 is in turn hooked on one salient unit 72 on positioning board 68.
As shown in figures 2 and 4, when the assembly of adjustable magnet-controlled wheel mechanism is completed, magnet set 56 happens to sit at the edge of flying wheel 51, and can generate desirable shear resistance. Therefore, as the user turns adjusting nut 23, the actions of adjusting rope 71 and spring 70 move magnet set 56 towards or away from the edge of flying wheel 51, and consequently the resistance is easily adjusted.
When the assembly of the above mechanism is completed, protection cover 80 is applied on both sides of front main frame 20. Thus a better assembly illustration is formed, as shown in figure 3.
In terms of the way string 53 is driven, when the user pulls pulling bar 64 and string 53, the wheel will subsequently rotate and release string that is initially in a spiral. On the other hand, the rotation of wheel 52 will initiate flying wheel 51 to rotate synchronously, through co-axle 59. However, as mentioned above, because shear resistance from magnet 56 acts on flying wheel 51 and subsequently wheel 52, the user will feel expected resistance when pulling string 53, and have the results of exercise. Now, as figure 6 shows, because active end 62 of spiral spring set 55 has been fixed at respective positioning hole 63 of pulley 53 and rotated, the spiral spring is in a tight spiral -- since spiral spring set 55 is fixed, only its active end 62 acts with the wheel. Then, as shown in figure 5, when the user releases the string, the reaction of the spiral spring and active end 62 will counter-rotate wheel 52, and subsequently restall string 53 and pulling barforrepetitive exercise.
Nevertheless, because there is one unidirectional bearing 58 installed at axial hole 57 of flying wheel 51, the flying wheel will not counter-rotate as wheel 52 does.
In figure 7, because slider bar 35 is only attached at connecting holes 31 of both side bars 29 of front main frame 20, when in use there should be one bolt 46 and end through hole 45 to position it at screw hole 44 of the level part of positioning board 68, so as to avoid rocking. To pack the exerciser, the user takes off bolt 46, tilt slider bar 35 straight, then fasten bolt 46 via same through hole 45 at another screw hole 441 on the parpenticular part of positioning board 68, for saving space.
Finally, as figure 8 shows, to move the exerciser, the user inclines it to keep grounding bar 33 grounded. Since both sides of grounding bar 33 are equipped with pushing wheels 49, it is easy to move the exerciser around.
To sum up, the present invention *magnet-controlled rowing exerciser* indeed makes many practical improvements; moreover, there is no similar product or design in market and literature before this application. Therefore, it complies to the requirements for a new patent with *unprecedented* and *advanced* practicality, and should be protected by the patent law. Hereby, the creator applies for a patent according to the law.
One magnet-controlled rowing exerciser, consisting of:
One front main frame. In front of it there is one hollow tilted beam. On the tilted beam there attached one pulling-bar supporter, one counter-timer clock, and one adjusting nut, and near the tip of it there is one indentation. Inside the indentation two pressing wheels 25 locate at the top and the bottom. Next, here appropriate near the bottom of the front main frame, there are one shaped component and another indentation for the installation of one leading wheel. Under the leading wheel, on both sides of the front main frame and the tilted beam installed two side-bars. Where appropiate on the two side-bars there locate one pair of axel-oriented holes and one pair of connection-oriented holes, for the installation of the adjustable magnet-controlled wheel mechanism and the slider bar. Then, at the other ends of the two side-bars, there attaches one grounding bar with two stepping plates. At each end of the grouding bar, there is one pushing wheel.
One slider bar. With the holes at both sides of its front end and a bolt, it connects to the two side-bars ~of the front main frame at their connection holes. On top of it there is one slider that slides. At its bottom, on each of the two sides there is one though hole.
One back supporting plate. It is arc-shaped, with one connecting hinge at its top. Besides the connecting hinge there is one half-circle, concave part to match the shape of the end of the slider, so as to tilt up back the supporting plate. Consequently the back supporting plate and the grounding bar form the grounding point which supports the exerciser.
The magnet-controlled rowing exerciser, as described in item 1 of this application, has its adjustable magnet-controlled wheel mechanism installed between the front main frame and comprise of one magnet-conductive flying wheel, one wheel, one string, one spiral spring cover, one spiral spring set, and one magnet set. At the axial hole of the flying wheel there is one unidirectional bearings to confine the flying wheel to rotate in only one direction. Subsquently, one through axle, together with two stopping bearing, fixes the flying wheel, the wheel, and the spiral spring set between the axle-oriented holes. In the mean time, the spiral spring cover has been locked at the locking holes of the spiral spring set, and affixed at the screw holes connecting the side bars through two screws. The active rnd is fixed at the wheel. After being rotated for several rounds, the active end goes under the leading wheel and inside the tilted beam of the front main frame, then goes out between the two pressing wheel. The other end of the string is connected to one pulling bar. Under the magnet set there is one hinge, together with one bolt and one pushing-up spring, for setting it G
at the positioning board of the two side bars. Near the top of the magnet set there is one connecting unit to hook one spring and one adjusting rope. The other end of that spring is in turn hooked on one salient unit on the positioning board.
To pack the magnet-controlled rowing exerciser, as described in item 1 of this application, the user takes off the bolt, tilt the slider bar straight, then fasten the bolt via same though hole 4.5 at another screw hole 441 on the parpenticular part of positioning board 68, for saving space.
Claims (5)
1. A rowing exerciser with magnetic resistance comprising:
a) a mainframe including a pair of side bars, a front end and a rear end, the rear end further including a pair of foot plates and wheel means for engaging a support surface and transporting the exerciser;
b) a tilt beam extending from the front end, the tilt beam including an upper portion and a lower portion, a pressing wheel means disposed at the upper portion and a leading wheel means disposed at the lower portion;
c) a slider bar including a front end and rear end, the front end being pivotally connected to the rear end of the mainframe, a support plate pivotally mounted to the rear end of the bar for engaging a support surface, and a seat slidably mounted on the bar;
d) a magnet controlled wheel mechanism supported on the mainframe, the mechanism including a magnetically conductive fly wheel, a drive wheel, the fly wheel and drive wheel being coaxially mounted for synchronous rotation with each other, a unidirectional bearing means restricting the fly wheel to one direction of rotation, a spiral spring having an active end secured to the drive wheel, and a magnet set position adjacent the periphery of the fly wheel for imparting shear resistance thereto;
e) a pull cord wound around the drum wheel and including an outer end extending through the leading wheel means and pressing wheel means of the tilt beam, and a pulling handle secured to the outer end of the cord; and f) wherein when a user sitting on the seat of the slider bar pulls the pulling handle to extend the cord, the drive and fly wheels rotate synchronously in one direction and under shear resistance imparted by the magnet set, and the spiral spring is caused to be tightly wound, whereupon release of the cord by the user causes only the drive wheel to rotate in an opposite direction under the action of the spiral spring to retract the cord and permit same to be rewound on the drive wheel.
a) a mainframe including a pair of side bars, a front end and a rear end, the rear end further including a pair of foot plates and wheel means for engaging a support surface and transporting the exerciser;
b) a tilt beam extending from the front end, the tilt beam including an upper portion and a lower portion, a pressing wheel means disposed at the upper portion and a leading wheel means disposed at the lower portion;
c) a slider bar including a front end and rear end, the front end being pivotally connected to the rear end of the mainframe, a support plate pivotally mounted to the rear end of the bar for engaging a support surface, and a seat slidably mounted on the bar;
d) a magnet controlled wheel mechanism supported on the mainframe, the mechanism including a magnetically conductive fly wheel, a drive wheel, the fly wheel and drive wheel being coaxially mounted for synchronous rotation with each other, a unidirectional bearing means restricting the fly wheel to one direction of rotation, a spiral spring having an active end secured to the drive wheel, and a magnet set position adjacent the periphery of the fly wheel for imparting shear resistance thereto;
e) a pull cord wound around the drum wheel and including an outer end extending through the leading wheel means and pressing wheel means of the tilt beam, and a pulling handle secured to the outer end of the cord; and f) wherein when a user sitting on the seat of the slider bar pulls the pulling handle to extend the cord, the drive and fly wheels rotate synchronously in one direction and under shear resistance imparted by the magnet set, and the spiral spring is caused to be tightly wound, whereupon release of the cord by the user causes only the drive wheel to rotate in an opposite direction under the action of the spiral spring to retract the cord and permit same to be rewound on the drive wheel.
2. The exerciser as defined in claim 1, wherein the adjustment means includes a knob mounted on the tilt beam, a rope connecting the knob to the magnet set, and a spring for imparting a bias to the magnet set.
3. The exerciser as defined in claim 1 or 2, further including a counter-timer clock mounted on the tilt beam.
4. The exerciser as defined in any one of claims 1 to 3, wherein the tilt beam further includes an upper recess, the pressing wheel means includes a pair of opposed wheels disposed within the upper recess, a supporter mounted adjacent the upper recess for supporting the pulling handle, a lower recess, the leading wheel means includes a mount and a wheel secured at the lower recess.
5. The exerciser as defined in any one of claims 1 to 4, further including a detachable bolt for selectively securing the slider bar in either a horizontal position of use or an inclined position for transport of the exerciser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002202337A CA2202337C (en) | 1997-04-10 | 1997-04-10 | Magnet-controlled rowing exerciser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002202337A CA2202337C (en) | 1997-04-10 | 1997-04-10 | Magnet-controlled rowing exerciser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2202337A1 CA2202337A1 (en) | 1998-10-10 |
| CA2202337C true CA2202337C (en) | 2006-07-11 |
Family
ID=4160383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002202337A Expired - Fee Related CA2202337C (en) | 1997-04-10 | 1997-04-10 | Magnet-controlled rowing exerciser |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2202337C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415498A (en) * | 2013-08-23 | 2015-03-18 | 岱宇国际股份有限公司 | Flywheel and rowing machine using same |
-
1997
- 1997-04-10 CA CA002202337A patent/CA2202337C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415498A (en) * | 2013-08-23 | 2015-03-18 | 岱宇国际股份有限公司 | Flywheel and rowing machine using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2202337A1 (en) | 1998-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5916069A (en) | Rowing exerciser with magnetic resistance | |
| US5569128A (en) | Leg and upper body exerciser | |
| US6409635B1 (en) | Recumbent exercise apparatus with elliptical motion | |
| US6652425B1 (en) | Cyclocentric ergometer | |
| US20040102292A1 (en) | Dual-function treading exerciser | |
| US7282014B2 (en) | Dual circling exercise method and device | |
| US5951447A (en) | Aquatic exercise and rehabilitation device | |
| EP0522012A1 (en) | Combination chair and exercise unit | |
| WO1983003357A1 (en) | Leg stretching apparatus | |
| US8529416B2 (en) | Exercising device | |
| GB2327621A (en) | Rowing machine with magnetic resistance mechanism | |
| US5472396A (en) | Portable exercise apparatus | |
| US3058742A (en) | Adjustable muscle building apparatus and manipulator | |
| US6099440A (en) | Progressive resistance system | |
| US5076573A (en) | Magnetic resistance type stationary rowing unit | |
| US20050014609A1 (en) | Exercise device for under a desk | |
| US20200085650A1 (en) | Convertible mobile exerciser | |
| US5145478A (en) | Bicycle exercising stand | |
| US5178589A (en) | Dual position exercise apparatus | |
| US20070200406A1 (en) | Apparatus for providing a continuous swinging motion | |
| CA2202337C (en) | Magnet-controlled rowing exerciser | |
| US5989162A (en) | Portable exercise device | |
| TWI748256B (en) | Rower | |
| GB2482136A (en) | A portable exercise device with a rotatable lever or leg support | |
| US5672141A (en) | Adjustable cycling apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20090414 |