DRAG GAIN STRUCTURE FOR GRAVITY WHEEL OF FITNESS EQUIPMENTS
A drag gain structure for the gravity wheel of fitness equipment has an eccentric driving member located on the first side of gravity wheel, which has inner and outer side plate sections and an interconnecting piece. One end of outer side plate section is fitted over and fixed to the shaft. One end of inner side plate section is connected to an eccentric position of gravity wheel by the first bias joint pin. A separate bearing pedestal is located on the second side of gravity wheel, including bearings screwed on the shaft, a pedestal shell fitted over the bearing and a radial protruding plate on the periphery of pedestal shell. The protruding end of radial protruding plate is connected to an eccentric position of gravity wheel by the second bias joint pin.
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STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTNot applicable.
NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENTNot applicable.
REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISCNot applicable.
BACKGROUND OF THE INVENTION 1. Field of the InventionThe present invention relates generally to fitness equipment, and more particularly to a drag gain structure for the gravity wheel of fitness equipment.
2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98In the existing design of exercise equipment, to enable the operator to obtain a certain drag effect during exercise for a better exercise effect, a gravity wheel (also known as counterweight wheel or flywheel) is usually provided. The gravity wheel is connected to the mechanism which is crank or pedal driven by the operator's force. In order to implement better drag effect under the condition of minimum outside diameter of the gravity wheel, the known practice usually uses a belt pulley block variable-speed gear to increase the drag effect, or arranges an electrically controlled magnetic drag regulator to regulate and control the drag.
Under the constraint that various specifications (e.g. outside diameter, wheel width and weight) of the gravity wheel cannot be increased further, the maximum drag effect the known exercise equipments can implement through said belt pulley block and electrically controlled magnetic drag regulator is supposed to reach a bottleneck, it is difficult to make significant progress.
Furthermore, said belt pulley block results in problems and defects in the overall structure of exercise equipments, such as occupying too much space and increasing the component material cost and assembly cost greatly. These problems are obviously the important technical topics for consideration.
BRIEF SUMMARY OF THE INVENTIONThe primary objective of the present invention is to provide a drag gain structure for the gravity wheel of fitness equipment. The technical problem to be solved is how to break through the goal for developing a novel drag structure for the gravity wheel of fitness equipment with higher ideal practicability. Said gravity wheel is to be installed in a position of a shaft of fitness equipment. Two ends of the shaft are to be driven by the preset power source to rotate. The gravity wheel comprises a first side and a second side.
In terms of technical characteristics of the present invention, said drag gain structure comprises an eccentric driving member, located on the first side of gravity wheel. The eccentric driving member comprises an outer side plate section, an inner side plate section and an interconnecting piece located between the same ends of outer side plate section and inner side plate section. One end of the outer side plate section far from the interconnecting piece is provided with a coupling hole kit and fixed to the periphery of shaft, so that the outer side plate section and shaft are interlocked. One end of the inner side plate section far from the interconnecting piece is connected to an eccentric position of gravity wheel by the first bias joint pin. The inner side plate section is connected to the end of the first bias joint pin. There is a pitch to the first side of gravity wheel. The intermediate section of inner side plate section is provided with an avoidance through hole for the shaft to pass through in loose fit state. A separate bearing pedestal is located on the second side of gravity wheel and screwed on the periphery of shaft. There is an axial spacing between the separate bearing pedestal and gravity wheel. The separate bearing pedestal comprises a bearing, a pedestal shell fitted over the bearing periphery and a radial protruding plate on the periphery of pedestal shell. The bearing is screwed on the periphery of shaft, the protruding end of radial protruding plate is connected to an eccentric position of gravity wheel by the second bias joint pin, and the radial protruding plate is connected to the end of the second bias joint pin, there is a pitch to the second side of gravity wheel.
In terms of main effect and merits of the present invention, the driving drag can be increased by eccentric drive and non-direct transmission, the space volume, material and assembly costs of the drag structure for the gravity wheel of fitness equipments are reduced greatly, implementing better economic benefit of industry and practical progressiveness.
Another purpose of the present invention is to reach an operation equilibrium state between the eccentric passive point and eccentric supporting point of the gravity wheel by another technical characteristic of interlacing relationship between the second bias joint pin and the first bias joint pin, so as to implement the merit and practical progressiveness of better stability and smoothness.
Said drag gain structure comprises the following components: an eccentric driving member 30, located on the first side 11 of the gravity wheel 10, the eccentric driving member 30 comprises an outer side plate section 31, an inner side plate section 32 and an interconnecting piece 33 located between the same ends of the outer side plate section 31 and inner side plate section 32, wherein one end of the outer side plate section 31 far from the interconnecting piece 33 is provided with a coupling hole 310, fitted over and fixed to the periphery of the shaft 20, so that the outer side plate section 31 and the shaft 20 are interlocked. One end of the inner side plate section 32 far from the interconnecting piece 33 is connected to an eccentric position of the gravity wheel 10 by a first bias joint pin 41. The inner side plate section 32 is connected to the end of the first bias joint pin 41, there is a pitch to the first side 11 of the gravity wheel 10. The intermediate section of the inner side plate section 32 is provided with an avoidance through hole 320. The avoidance through hole 320 lets the shaft 20 pass through in loose fit state; a separate bearing pedestal 50, located on the second side 12 of the gravity wheel 10 and screwed on the periphery of the shaft 20. There is an axial spacing 60 between the separate bearing pedestal 50 and the gravity wheel 10 (only indicated in
As shown in
As shown in
Wherein the central imaginary connecting line between the second bias joint pin 42 and the first bias joint pin 41 is any arrangement relationship of straight line or meander line through the center of the shaft 20; this part is shown in
As shown in
As shown in
As shown in
Based on said structural composition type and technical characteristics, the drag gain structure for the gravity wheel of fitness equipments disclosed in the present invention can be used as the drag structure for the existing exercise equipments, such as pedaled exercise bikes, elliptic stair steppers and so on. This part is as the implementation pattern shown in
The “drag gain structure for the gravity wheel of fitness equipment” disclosed in the present invention comprises said eccentric driving member and separate bearing pedestal, and the first and the second bias joint pin are located in the eccentric positions in different directions of gravity wheel respectively, interlaced with each other. In addition, based on the innovative unique structure type and technical characteristics, e.g. indirect transmission relationship of simultaneous motion of gravity wheel and separate bearing pedestal connected by the second bias joint pin, compared with the known structures proposed by previous technologies, the present invention can increase the driving drag by eccentric drive and non-direct transmission, so as to reduce the space volume, material and assembly costs of the drag structure for the gravity wheel of fitness equipments greatly, and the inertia moment is increased greatly, which are better economic benefit of industry and practical progressiveness.
On the other hand, the technical characteristic of interlacing relationship between the second bias joint pin and the first bias joint pin is important for the present invention, which implements an operation equilibrium state between the eccentric passive point (i.e. the first bias joint pin) and eccentric supporting point (i.e. the second bias joint pin) of the gravity wheel, so that the actuation is steadier and smoother.
Claims
1. A drag gain structure for the gravity wheel of fitness equipment, said gravity wheel is to be installed in a position of a shaft of fitness equipment; two ends of the shaft are to be driven by the preset power source to rotate; the gravity wheel comprises a first side and a second side; said drag gain structure comprises:
- an eccentric driving member, located on the first side of the gravity wheel; the eccentric driving member comprises an outer side plate section, an inner side plate section and an interconnecting piece located between the same ends of the outer side plate section and inner side plate section, wherein one end of the outer side plate section far from the interconnecting piece is provided with a coupling hole fitted over and fixed to the periphery of the shaft, so that the outer side plate section and the shaft are interlocked; one end of the inner side plate section far from the interconnecting piece is connected to an eccentric position of the gravity wheel by a first bias joint pin; the inner side plate section is connected to the end of the first bias joint pin, there is a pitch to the first side of the gravity wheel; an avoidance through hole is located in the intermediate section of the inner side plate section, the avoidance through hole allows the shaft to pass through in loose fit state;
- a separate bearing pedestal, located on the second side of the gravity wheel and screwed on the periphery of the shaft; there is an axial spacing between the separate bearing pedestal and the gravity wheel; the separate bearing pedestal comprises more than one bearing, a pedestal shell fitted over the periphery of the bearing and a radial protruding plate on the periphery of the pedestal shell, wherein the bearing is screwed on the periphery of the shaft, the protruding end of the radial protruding plate is connected to an eccentric position of the gravity wheel by the second bias joint pin; the radial protruding plate is connected to the end of the second bias joint pin, there is a pitch to the second side of the gravity wheel;
- an avoidance punch hole is located in the center of the gravity wheel for the shaft to pass through in loose fit state, forming the indirect transmission relationship of simultaneous motion of the gravity wheel and the separate bearing pedestal connected by the second bias joint pin.
2. The drag gain structure for gravity wheel of fitness defined in claim 1, wherein the second bias joint pin and the first bias joint pin are located in the eccentric positions in different directions of the gravity wheel respectively, so that the second bias joint pin and the first bias joint pin are interlaced.
3. The drag gain structure for gravity wheel of fitness defined in claim 2, wherein the interconnecting piece and the first bias joint pin are located in equidistant or approximately equidistant positions on two opposite sides in radial direction of the shaft respectively.
4. The drag gain structure for gravity wheel of fitness defined in claim 3, wherein the central imaginary connecting line between the second bias joint pin and the first bias joint pin is any arrangement relationship of straight line or meander line through the center of the shaft.
5. The drag gain structure for gravity wheel of fitness defined in claim 4, wherein the bearings of the separate bearing pedestal are two sets arranged in pair.
6. The drag gain structure for gravity wheel of fitness defined in claim 5, wherein the plates of inner side plate section and outer side plate section of the eccentric driving member are arranged in parallel with an included angle of 0°.
7. The drag gain structure for gravity wheel of fitness defined in claim 6, wherein the plates of inner side plate section and outer side plate section of the eccentric driving member are arranged in non-parallel with an included angle of 1° to 45°.
8. The drag gain structure for gravity wheel of fitness defined in claim 7, wherein the second bias joint is dual column spaced.
9. The drag gain structure for gravity wheel of fitness defined in claim 1, wherein the interconnecting piece of the eccentric driving member is a cylinder fixed between the same ends of the outer side plate section and inner side plate section.
10. The drag gain structure for gravity wheel of fitness defined in claim 8, wherein the interconnecting piece of the eccentric driving member is a cylinder fixed between the same ends of the outer side plate section and inner side plate section.
11. The drag gain structure for gravity wheel of fitness defined in claim 1, wherein the interconnecting piece is a plate integrated between the same ends of the outer side plate section and inner side plate section.
12. The drag gain structure for gravity wheel of fitness defined in claim 8, wherein the interconnecting piece is a plate integrated between the same ends of the outer side plate section and inner side plate section.
Type: Application
Filed: Feb 6, 2019
Publication Date: Aug 6, 2020
Inventor: Yung-Sung YEH (New Taipei City)
Application Number: 16/268,934