JP2007290534A - Bicycle in shared use for leg strength training - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bicycle in shared use for leg strength training, which provides a sufficient exercise and easily achieves a target for the leg strength training even when traveling a short distance or in a short traveling time in the neighborhood or the like. <P>SOLUTION: The bicycle in shared use for the leg strength training is provided with a resistance mechanism for applying a sustainable and resilient resistance against traveling during the traveling of the bicycle other than a brake applied to wheels and enables the traveling against the sustainable and resilient resistance on the actuation of the resistance mechanism. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bicycle, and more particularly, to a bicycle for leg exercise.

  In recent years, riding bicycles for health promotion and dieting has become popular among urban residents. For these urban people, they are so busy that they don't have time to ride on the mountain and forest roads to the suburbs, so they sometimes run around the neighborhood by bicycle. In this way, when riding a bicycle in the neighborhood, not only is the mileage short, but also it is not possible to run at high speed, so it is not possible to exercise enough and consumes less calories, which is not useful for body training, especially leg exercise.

  The present invention has been made in view of the above-mentioned actual situation, and even if it runs a short distance or takes a short running time in a neighborhood or the like, it can exercise enough and can easily achieve the goal of leg exercise. The purpose is to provide a combined bicycle.

  In order to achieve the above object, the present invention is not provided with a brake applied to a wheel, but is additionally provided with a resistance mechanism that applies a continuous and elastic resistance to traveling while the bicycle is traveling. When the is actuated, a bicycle for both leg strength exercises capable of running while resisting the continuous and elastic resistance is provided.

  The term “sustained” means that the bicycle is not temporarily stopped by hand or leg operation as in the case of a normal bicycle hand brake, but the bicycle that is running is sustained. Say to call.

  The term “elastic” means that the bicycle is not stopped by applying a predetermined resistance force larger than that of the bicycle as in the case of a normal bicycle handbrake, but within a certain range of the bicycle. This means applying a resistance that can change elastically.

  The “resistive force that can be elastically changed” refers to a resistance force formed by elastic bias of a constituent material or a force propagation medium itself. Examples of the former include springs and other elastic materials, and examples of the latter include air-based resistance, such as wind power, and magnetism-based resistance, ie, magnetic force. .

  The resistance mechanism may be installed on a wheel shaft or a crank shaft that drives the wheel in response to a pedaling force, or may be installed on a vehicle body. However, as long as the resistance of the bicycle can be sustained and elastic, good.

  Further, the resistance mechanism that is easy to attach and detach, as well as those that are fixed and cannot be easily removed, meet the purpose of the present invention.

  According to the structure of the above-mentioned bicycle for both leg exercise and practice, since a resistance mechanism attached to the bicycle other than the brake can add continuous and elastic resistance to the running while the bicycle is running, Compared to a bicycle, for example, you can run a short distance to a nearby supermarket or spend a short amount of time, and you can exercise enough and easily achieve the goal of leg exercise, which is quite convenient for busy users .

  In general, the present invention is not provided with a brake applied to a wheel, in addition to a normal bicycle structure, but is provided with a resistance mechanism that adds a continuous and elastic resistance to traveling while the bicycle is traveling. In addition, when this resistance mechanism is activated, the bicycle is a leg-strength practice bicycle that can run against the persistent and elastic resistance. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  First, a bicycle for practice of leg strength according to the first embodiment of the present invention will be described. FIG. 1 is a side view of a bicycle for both leg exercises according to a first embodiment of the present invention. FIG. 2 is a longitudinal sectional view taken along line AA in FIG.

  As shown in FIG. 1, the bicycle for leg practice according to the first embodiment has a resistance mechanism 70 that applies a continuous and elastic resistance to running while the bicycle is running, in addition to a brake on the rear wheel 51. It is attached and can practice leg strength. As shown in FIG. 2, since the plurality of spokes 71 attached between the hub 511 and the rim 512 of the rear wheel 51 in this bicycle are all formed in the shape of a blade and constitute the resistance mechanism 70, the bicycle Wind resistance can be applied to the rear wheel 51 during the traveling of the vehicle. Here, the resistance mechanism 70 is illustrated as being attached to the rear wheel 51, but it is easily conceivable that the resistance mechanism may be attached to the front wheel or both the front and rear wheels.

  In this embodiment, since wind force using a compressible air as a medium is used as resistance to the rear wheel 51 of the bicycle, the rear wheel 51 counters the compressive wind resistance while the bicycle is running. Because it can rotate while cycling, the bicycle can not only run, but also can be used for exercise of leg strength.

  Next, a bicycle for practice of leg strength according to a second embodiment of the present invention will be described. FIG. 3 is a longitudinal sectional view of a rear wheel portion of a bicycle for both leg exercise practice according to the second embodiment of the present invention.

  The structure of the bicycle for leg strength practice of the second embodiment is almost the same as that of the first embodiment, except that the resistance mechanism 80 is a rear wheel 51 to which the rear wheel 51 belongs as shown in FIG. Of the hub 511 and the fork claw 111 corresponding to the one end 511a of the fork 11 between the hub 511 and the fork 11 of the vehicle body 10 supporting the herb 511 from both ends. One of a pair of magnetic force generating devices 81 that can be attracted to each other is attached to provide resistance by the magnetic force to the rotation of the rear wheel 51 while the bicycle is running.

  In this embodiment, what is attached to the hub 511 of the pair of magnetic force generating devices 81 is, as a first magnetic device, fixed to one end 511a of the hub 511 and can be rotated together with the hub 511. The magnetic means 812 is fixed to the surface of the mounting seat 811 and can rotate together with the hub 511 and the mounting seat 811.

  The pair of magnetic force generating devices 81 attached to the fork claws 111 are made of iron as the second magnetic device and are fixed to the fork claws 111 so that the bicycle is running. When the hub 511 rotates together with the rotation of the rear wheel 51, it includes an attracted body 813 that is attracted to the magnetic means 812 and gives resistance to the rotation of the rear wheel 51 through the hub 511 by a magnetic force.

  In this embodiment, a magnetic force using a compressible magnetism as a medium is used as a resistance to the rear wheel 51 of the bicycle. Therefore, the rear wheel 51 has a compressive magnetic force resistance while the bicycle is running. The bicycle can be rotated while competing, so that the bicycle can not only run but also can be used for practicing leg strength.

  Next, a bicycle for practice of leg strength according to a third embodiment of the present invention will be described.

  FIG. 4 is a longitudinal cross-sectional view of a rear wheel portion of a bicycle for leg exercise practice according to a third embodiment of the present invention. FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4 and shows a state where the pair of friction means in the leg exercise / bicycle according to the third embodiment is not expanded. FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 4, and a pair of friction means in the bicycle for both leg strength practice of the third embodiment resists the contraction force of the spring and comes into contact with the first friction device. The expanded state is shown as follows.

  The structure of the bicycle for leg strength practice of the third embodiment is almost the same as that of the second embodiment, but the difference is as a resistance mechanism 90, as shown in FIG. One of a pair of frictional force generating devices 91 capable of rubbing each other is attached to one end 511a of the hub 511 between the hub 511 and the fork 11 and the fork claw 111 corresponding to the one end 511a of the fork 11. In other words, friction resistance is given to the rotation of the rear wheel 51 while the bicycle is running.

  In this embodiment, what is attached to one end 511 a of the hub 511 of the pair of frictional force generating devices 91 is a hook-shaped one as the first friction device 911, and the peripheral wall 912 of the fork pawl 111 is It protrudes toward. In addition, what is attached to the fork claws 111 of the pair of friction force generating devices 91 is a mounting seat 913 fixed to the fork claws 111 as the second friction device, and the first friction device 911 is attached to the mounting seat 913. It consists of a pair of friction means 915, 915 which are mounted so as to be inserted into the bowl.

The pair of friction means 915 and 915 is provided with a spring 914 between them, and is always in a position as shown in FIG. 5, and resists the contraction force of the spring 914 by operation, and as shown in FIG. Since it can be expanded until it comes into contact with the inner surface 912a of the peripheral wall 912 of the 911, frictional resistance can be given to the rotation of the rear wheel 51 when it is expanded by operation.
Also, the mounting seat 913 is pivoted so that the cam mechanism 916 can perform a cycle in which the pair of friction means 915 and 915 are pressed and expanded so as to contact the inner surface 912a of the peripheral wall 912 and returned to the normal position. It is supported. The cam mechanism 916 is provided on the bicycle handle and extends to the handle of the bicycle, and is configured to perform the cycle in conjunction with an adjustment cord 917 controlled by a user's pulling and releasing operations.

  In this embodiment, since the frictional force generated by the spring-equipped friction device is used as the resistance to the rear wheel 51 of the bicycle, the rear wheel 51 is opposed to the compressible frictional resistance by the spring while the bicycle is running. Because it can rotate, the bicycle can not only run, but also can be used for practicing leg strength.

  Next, a bicycle for combined practice of leg power according to a fourth embodiment of the present invention will be described. FIG. 7 is a side view of a bicycle for leg strength practice according to a fourth embodiment of the present invention. 8 is a cross-sectional view taken along line CC in FIG. FIG. 9 is a cross-sectional view taken along the line DD in FIG.

  As shown in FIGS. 7 and 8, the bicycle for leg strength practice according to the fourth embodiment is hung on a wheel on a crankshaft 65 between a pair of cranks 64 and 64 for receiving the pedaling force to drive the rear wheel 51. In addition to the brake, a resistance mechanism 140 for adding resistance to the traveling during the traveling of the bicycle is attached so that the leg strength can be practiced. Further, as the resistance mechanism 140, the crankshaft 65 and the bottom bracket 17 that is fixed to the bicycle body 10 and that is inserted through the crankshaft 65 and holds the pair of cranks 64 and 64 are respectively frictioned with each other. One of a pair of possible friction force generating devices 141 is attached, and provides frictional resistance to rotation of the crankshaft 65 while the bicycle is running.

  In this embodiment, as shown in FIGS. 8 and 9, the one attached to the crankshaft 65 of the pair of friction force generating devices 141 is fixed around the crankshaft 65 as the first friction device. The mounting seat 142 can be rotated together with the crankshaft 65, and the friction ring 143 is fixed around the mounting seat 142 and can rotate together with the crankshaft 65 and the mounting seat 142. The one attached to the bottom bracket 17 of the pair of friction force generating devices 141 is fixed to the inner peripheral surface 17a of the bottom bracket 17 as the second friction device, and the pair of cranks 64, 64 are rotated by receiving the pedaling force. When the bicycle is run, the friction pad 143 is rubbed with the friction ring 143 to give a frictional resistance to the rotation of the crankshaft 65.

  Since the mounting seat 142 is made of an elastic material, for example, a rubber material having good elasticity, the friction resistance force between the friction ring 143 and the friction pad 144 can be changed to be elastic. it can.

  In this embodiment, since an elastic frictional force is used as a resistance against the crankshaft 65 of the bicycle, the crankshaft 65 can rotate against the elastic frictional resistance while the bicycle is running. So, not only can the bicycle run, it can also be used to practice leg strength.

  Next, a bicycle for leg exercise practice according to a fifth embodiment of the present invention will be described. FIG. 10 is a longitudinal cross-sectional view of a crank and a crankshaft of a bicycle for both leg power practice according to a fifth embodiment of the present invention. 11 is a cross-sectional view taken along line EE in FIG.

  The structure of the bicycle for leg strength practice of the fifth embodiment is almost the same as that of the fourth embodiment, but the difference is that the resistance mechanism 150 is fixed to the crankshaft 65 and the bicycle body 10 and the crank. One of a pair of magnetic force generating devices 151 that can be attracted to each other is provided on the bottom bracket 17 that is inserted through the shaft 65 and holds the pair of cranks 64, 64. It is to give resistance by rotation of the magnetic force.

  In this embodiment, what is provided toward the crankshaft 65 of the pair of magnetic force generating devices 151 is a mounting seat that is fixed around the crankshaft 65 and can rotate with the crankshaft 65 as the first magnetic device. 152 and a magnetic means 153 fixed around the mounting seat 152 and capable of rotating together with the crankshaft 65 and the mounting seat 152. Further, what is provided toward the bottom bracket 17 of the pair of magnetic force generating devices 151 is made of iron as the second magnetic device, and the pair of cranks 64 and 64 are rotated by receiving the pedaling force, When the bicycle is run, it consists of the bottom bracket 17 itself that is attracted by the magnetic means 153 and gives resistance to the rotation of the crankshaft 65 by magnetic force.

  In this embodiment, a magnetic force using a compressible magnetism as a medium is used as a resistance to the crankshaft 65 of the bicycle. Therefore, the crankshaft 65 is connected to the compressive magnetic force resistance while the bicycle is running. The bicycle can be rotated while competing, so that the bicycle can not only run but also can be used for practicing leg strength.

  As mentioned above, the bicycle according to the present invention is not provided with a brake applied to the wheels, but is additionally provided with a resistance mechanism that adds continuous and elastic resistance to the running while the bicycle is running. When the resistance mechanism is activated, the resistance mechanism can run against the continuous and elastic resistance, and can be used for leg exercise.

  The term “sustainable” means that the resistance force is not applied to the bicycle while the bicycle is running, rather than being temporarily applied by hand or leg operation as in the case of a normal bicycle handbrake. Although it means applying force, since the mechanism for “sustain” is simple and conventional, the detailed description thereof will be omitted.

  Furthermore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

  According to the bicycle for both leg strength practice of the present invention, compared with a normal bicycle, for example, by running a short distance to a nearby supermarket or taking a short running time, it is possible to exercise enough and easily aim for leg exercise. Can be achieved and is quite convenient for busy users

1 is a side view of a bicycle for both leg strength practice according to a first embodiment of the present invention. Sectional drawing which follows the AA line in FIG. The longitudinal cross-sectional view of the rear-wheel part of the bicycle used also for leg strength practice of 2nd Embodiment of this invention. The longitudinal cross-sectional view of the rear-wheel part of the bicycle used also for leg strength practice of 3rd Embodiment of this invention. It is sectional drawing which follows the BB line in FIG. 4, and shows the state which exists in the normal position where a pair of friction means in the bicycle for leg power practice of 3rd Embodiment has not expanded. FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4 and is expanded so that the pair of friction means in the bicycle for both leg exercise practice of the third embodiment resists the contraction force of the spring and contacts the first friction device. Indicates the state. The side view of the bicycle also used for leg power practice of a 4th embodiment of the present invention. Sectional drawing which follows the CC line | wire in FIG. Sectional drawing which follows the DD line | wire in FIG. The longitudinal cross-sectional view of the crank and crankshaft of the bicycle also used for leg power practice of 5th Embodiment of this invention. Sectional drawing which follows the EE line | wire in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car body 11 Fork 111 Fork nail | claw 17 Bottom bracket 17a (Bottom bracket) inner peripheral surface 51 Rear wheel 511 Hub 511a (Hub) one end 512 Rim 64 Crank 65 Crankshaft 70 Resistance mechanism 71 Spoke 80 Resistance mechanism 81 Magnetic force generating device 811 Attachment Seat 812 Magnetic means 813 Object to be attracted 90 Resistance mechanism 91 Friction force generating device 911 First friction device 912 Inner wall 912a (peripheral wall) inner surface 913 Mounting seat 914 Spring 915 Friction means 916 Cam mechanism 917 Adjusting cord 140 Resistance mechanism 141 Friction force generation Device 142 Mounting seat 143 Friction ring 150 Resistance mechanism 151 Magnetic attractive force generating device 152 Mounting seat 153 Magnetic means

Claims (11)

  In addition to the brakes applied to the wheels, a resistance mechanism for adding a continuous and elastic resistance to the traveling during the traveling of the bicycle is attached, and when the resistance mechanism is activated, the continuous and elastic resistance is A bicycle for both leg exercises, characterized by being able to run against the road. In addition to the brake, at least one of the two front and rear wheels is provided with a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle that can run against natural and elastic resistance,
As the resistance mechanism, at least one of a plurality of spokes attached between the hub and rim of the wheel to which the member belongs is formed in the shape of a blade, and the wheel to which the member belongs during traveling of the bicycle A bicycle for leg exercise combined with wind resistance. In addition to the brake, at least one of the two front and rear wheels is provided with a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle that can run against natural and elastic resistance,
As the resistance mechanism, it corresponds to at least one end of the hub and the one end of the fork between the hub of the wheel to which the resistance belongs and the fork that pivotally supports the hub from both ends. One of a pair of magnetic force generating devices that can be attracted to each of the fork claws is attached to the fork claw, and applies resistance to the rotation of the belonging wheel during traveling of the bicycle by the magnetic force, and the bicycle for both leg strength practice characterized by . What is attached to the hub of the pair of magnetic force generating devices is a first magnetic device that is fixed to one end of the hub and can be rotated together with the hub, and is fixed to the surface of the mounting seat. And magnetic means capable of rotating together with the hub and the mounting seat,
What is attached to the fork claws of the pair of magnetic force generating devices is an iron material as the second magnetic device, and is fixed to the fork claws, and the hub is mounted while the bicycle is running. 2. The apparatus according to claim 1, further comprising: an attracted body that is attracted by the magnetic means when rotating with the rotation of the associated wheel, and applies a resistance by magnetic force to the rotation of the associated wheel through the hub. The bicycle for both leg exercises described in 3. In addition to the brake, at least one of the two front and rear wheels is provided with a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle that can run against natural and elastic resistance,
The resistance mechanism corresponds to at least one end of the hub and the one end of the fork between the hub of the wheel to which the resistance belongs and the fork that pivotally supports the herb from both ends. One of the pair of frictional force generating devices capable of rubbing each other on the fork claws, and applying a frictional resistance to the rotation of the belonging wheel during the traveling of the bicycle, a bicycle for both leg strength practice. What is attached to one end of the hub of the pair of friction force generating devices is a hook-shaped one as the first friction device, and the peripheral wall protrudes toward the fork claw,
The pair of friction force generating devices attached to the fork claws include a mounting seat fixed to the fork claws as a second friction device, and a hook seat in the first friction device in the mounting seat. It is constructed so that it can be expanded until it comes into contact with the inner surface of the peripheral wall of the first friction device. The bicycle for both leg exercises according to claim 5, comprising a pair of friction means for imparting frictional resistance to rotation, and the spring is provided between the pair of friction means.   In addition to the brakes applied to the wheels on the crankshaft between the pair of cranks for receiving the pedaling force to drive the rear wheels, there is a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle which is attached and can run while resisting the continuous and elastic resistance when the resistance mechanism is activated. In addition to the brakes applied to the wheels on the crankshaft between the pair of cranks for receiving the pedaling force to drive the rear wheels, there is a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle that can be run against the continuous and elastic resistance when the resistance mechanism is activated,
As the resistance mechanism, a pair of frictional force generating devices that can be rubbed against each other on the crankshaft and a bottom bracket that is fixed to the bicycle body and that is inserted through the crankshaft and holds the pair of cranks. One of the above-described bicycles is attached to the bicycle, and the bicycle for both leg exercises is characterized by giving frictional resistance to the rotation of the crankshaft while the bicycle is running. The pair of friction force generating devices attached to the crankshaft is, as a first friction device, an elastic material mounting seat fixed around the crankshaft and capable of rotating together with the crankshaft. And a friction ring fixed around the mounting seat and capable of rotating together with the crankshaft and the mounting seat.
The pair of friction force generating devices attached to the bottom bracket is a second friction device that is fixed to the inner peripheral surface of the bottom bracket, and the pair of cranks receives a pedaling force to rotate the bicycle. 9. The bicycle for both leg exercise according to claim 8, comprising a friction pad that rubs against the friction ring when running and gives friction resistance to rotation of the crankshaft. In addition to the brakes applied to the wheels on the crankshaft between the pair of cranks for receiving the pedaling force to drive the rear wheels, there is a resistance mechanism that applies continuous and elastic resistance to the running while the bicycle is running. A bicycle that can be run against the continuous and elastic resistance when the resistance mechanism is activated,
As the resistance mechanism, a pair of magnetic attraction forces that can be attracted to each other by the crankshaft and a bottom bracket that is fixed to the bicycle body and that is inserted through the crankshaft and holds the pair of cranks, respectively. One of the devices is provided, and the bicycle for combined leg exercises is characterized by giving a resistance by a magnetic force to the rotation of the crankshaft while the bicycle is running. What is provided in the direction of the crankshaft of the pair of magnetic force generating devices is a first magnetic device that is fixed around the crankshaft and can rotate with the crankshaft, and the mounting seat A magnetic means that is fixed around and rotatable with the crankshaft and the mounting seat,
The pair of magnetic force generating devices provided on the bottom bracket is made of iron as the second magnetic device, and the pair of cranks are rotated by receiving a pedaling force to run the bicycle. The bicycle for both leg power practice according to claim 10, comprising the bottom bracket itself which is attracted by the magnetic means and gives resistance by a magnetic force to the rotation of the crankshaft.

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