JP2006289022A - Fixed type bicycle training device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a conventional fixed type bicycle training device that as the power of the load increases, pedal rotation speed is rapidly dropped to make similar training to that outdoors impossible. <P>SOLUTION: This fixed type bicycle training device is in such a structure that torque of a crank is transmitted through a speed changer to a rotation load device. By regulating the speed change ratio of the speed changer, training can be performed at favorable pedal rotation speed regardless of the power of the load by the rotation load device. As a clutch mechanism is provided on a center shaft of the rotation load device, drive-related mechanisms are simplified, and clutch noise is reduced. A mechanism to lift a front pillar in a frame as desired is provided, and the frame is provided with inclination, so that muscle training as effective as travel on a slope can be carried out indoors. Because the rotation load device is provided ahead of a drive gear, the whole device can be compact. As the gravity center is on the front side, a stable state can be maintained even when the front pillar is raised. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a stationary bicycle training device that performs pedal depression training.

  There is a fixed-type bicycle training device that has a shape of a bicycle and rotates leg pedals as operation members to increase leg strength, muscle strength of the back and abdomen. The rotational force of the crankshaft provided with the pedal is transmitted via a chain or belt to a rotational load device for applying a load to the pedal. The handle is provided with a display panel, which displays the state of training, that is, the number of revolutions, speed per hour, elapsed time, calorie consumption, load intensity, and the like. A lever or dial for adjusting the strength of the load is provided in the vicinity of the display panel.

There are two types of rotary load devices: a mechanical device that uses frictional resistance and an electromagnetic device that uses an electromagnet and a rotating metal plate, and uses eddy current generated when the metal plate rotates in a magnetic field and electric braking by the magnetic field. is there. The load is adjusted by adjusting the gap between the electromagnet and the metal plate. Since the electromagnetic type is non-contact, it has a low noise and a long life, and this type of apparatus has become the mainstream.

As means for transmitting the rotational force from the crankshaft to the rotational load device, there are a belt transmission system composed of a pulley and a belt from the viewpoint of noise, or a chain transmission system like a normal bicycle. The belt transmission system has the advantage of low noise, but the problem is to prevent the belt from slipping. On the other hand, in the case of the chain transmission system, there is no slip, but there is a drawback that noise is generated when the gear and the chain are engaged.

Sports-type riding bicycles equipped with multi-stage transmissions for outdoor use have been put into practical use. Some test-riding bicycles used indoors have a multi-stage transmission. Both the former and the latter are rear-wheel drive types that shift the pedal drive torque and transmit it to the rear wheels. There are no purely fixed training bicycles with gearboxes. Patent Document 1 discloses a training bicycle in which the handle swings back and forth in accordance with the depression pressure of the pedal in order to achieve the same strength training as outdoors in indoor training and to obtain a sense of reality like outdoors. . However, in this case, the handle only swings back and forth, and there is no mechanism for tilting the frame like when climbing or descending.

Japanese Patent Laid-Open No. 7-303714

Since the training device is used indoors, it is generally required that the load can be freely changed, maintenance frequency is low, noise is low, etc., but muscle strength training similar to training outdoors can be done comfortably. Further needed.

In the conventional stationary bicycle training device, the rotational force due to the pedaling motion is transmitted to the gear or wheel of the rotational load device at a constant gear ratio by a belt or chain, but the rotational load device itself has a fine load strength. And it is difficult to change linearly. Therefore, as the load increases, the pedal suddenly becomes heavier and the crank rotation speed decreases. If the rotational speed decreases too much, the pedal depression force decreases, and the rotational speed further decreases.

As a result, it was difficult to increase the load gently as compared to the training by running outdoors, and it was difficult to perform uphill training and endurance training at high loads. The reason for this is that the optimum number of crank rotations by pedaling varies depending on the user, but on average it is 90 times / minute. If training is possible at the optimum number of rotations regardless of whether the load is large or small, You can train comfortably for a long time.

Furthermore, the bicycle training apparatus basically has a frame and a handle, and the riding comfort is different from that of a regular or training bicycle outdoors. Therefore, the balance feeling and the muscular strength training effect similar to the training by outdoor running cannot be obtained. Bicycle training devices are intended for training, but in order to enjoy training over a long period of time, it is necessary to have a sense of realism such as shaking and speed as with an outdoor training bicycle or mountain bike. .

The present application solves the above-described problems, and provides a stationary bicycle training apparatus that can comfortably perform muscular strength training that is indoors and that can be trained for endurance.

  The fixed-type bicycle training apparatus according to the present application includes a frame disposed on a fixed base installed on a floor, a handle and a saddle attached to the front and rear of the frame, and a lower side of the frame on both sides. A training bicycle comprising a crankshaft penetrated through the crankshaft, a crank with a foot pedal attached to both ends of the crankshaft, a rotational load device, and a transmission means for transmitting the rotational force of the crank to the rotational load device In the above, the rotational force of the crank is transmitted to the rotational load device via the transmission. As a result, the gear ratio can be adjusted so that training can be performed at a preferable number of pedal rotations even when the strength of the load by the rotational load device increases.

Therefore, a mechanism for transmitting the rotational force of the pedal to the rotational load device includes a drive side gear having a desired number of teeth, a driven side gear including a plurality of gears having different numbers of teeth and connected in a coaxial shape, and the drive side gear. The chain consists of a chain wound around the driven gear and a driven derailleur attached in the vicinity of the driven gear. By applying a lateral force to the chain from the speed change lever via the speed change wire by the driven side derailleur, it is possible to change the gear ratio of the driven side gear that hangs the chain.

Furthermore, as a configuration in which a plurality of gears having different numbers of teeth are connected in a coaxial shape to the drive side gear, by changing the gears to be chained by the drive side derailleur, the gears of the drive side gear and the driven side gear are selected, It is possible to shift in a wider range with finer steps.

By providing a clutch mechanism on the rotating shaft of the rotary load device, the drive-related mechanism can be simplified and the clutch noise can be reduced. Furthermore, the stationary bicycle training device can be made compact by attaching the rotational load device in front of the driving gear. Conventional rear-wheel drive type outdoor training bicycles and indoor test ride bicycles are rear-wheel drive types with drive wheels located behind the pedals, and the total length is about 180 cm. By arranging them in front, the total length can be about 90 cm, making it extremely compact.

Further, in the fixed bicycle training apparatus according to the present application, the handle shaft is rotatably attached to the handle support body with a braking mechanism against the rotation. Thus, similar to outdoor running, training close to actual running can be performed while maintaining balance by moving the handle to the left and right.

Furthermore, the fixed type bicycle training apparatus is composed of a vertical base bar, a support plate attached laterally before and after the lower surface of the base bar, and a resilient base attached to both ends of each support plate. By attaching to the arm, it is possible to comfortably perform strength training close to actual running.

Furthermore, a mechanism for arbitrarily lifting the front support column in the frame is provided, and by increasing the inclination of the frame, training for increasing strength can be performed in the same way as running on a slope. Among the accompanying members, a heavy load load device is attached to the front of the foot pedal and the center of gravity is on the front side, so that the balance of the device is not lost even if the front column is lifted.

  The stationary training bicycle according to the present invention transmits the rotational force of the drive side gear with gears to the driven side gear formed by connecting a plurality of gears in a coaxial shape, so that the rotational force of the crank is rotated with a speed change function. Since it is transmitted to the load device, even if the strength of the load changes, the preferable number of pedal rotations can be maintained, and muscle strength training similar to outdoor running can be performed comfortably. Furthermore, slope training can be performed indoors by lifting the movable support attached to the front support.

  Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a side view of a fixed bicycle training apparatus according to Embodiment 1 of the present invention. A frame 4 including a pair of support columns 2 and 3 is disposed on the fixed base 1. The columns 2, 3 and the frame 4 are made of metal pipes and are joined to each other by welding. The front support column 2 has an inverted U shape when viewed from the front, and a handle 5 is attached to an upper end of the front support column 2 via a handle support 6 so as to be extendable and rotatable. A saddle 7 is attached to the frame 4 connected to the rear column 3 so as to be extendable and contractible. A crankshaft 8 is attached to the crankshaft 8 through a fixing bracket (not shown) attached to the lower side of the frame 4 that diagonally connects the front support post 2 and the rear support post 3. 9 is attached so as to rotate together with the crankshaft 8, and a crank 10 and a foot pedal 11 are attached to protruding portions on both sides of the crankshaft 8.

The rotational force generated by the stepping action is transmitted from the driving side gear 9 to the driven side gear 13 composed of a plurality of gears connected coaxially by the chain 12. Therefore, the driven side derailleur 14 attached in the vicinity of the driven side gear 13 applies a lateral force from the speed change lever 15 to the chain 12 via the speed change wire 16 to change the gear of the driven side gear 13 that hangs the chain 12. By doing so, the gear ratio can be changed. A rotation shaft of the rotation load device 17 is attached to the rotation shaft of the driven gear 13 to give a load function to the stepping action. A brake lever 18 for adjusting the strength of the load of the rotary load device 17 is attached to the upper portion of the handle 5. When the brake lever 18 is pulled, the force is transmitted to the rotary load device 17 through the brake wire 19 and the strength of the load increases.

Although there are some individual differences depending on the user, the number of rotations of the pedal 11 that can be trained most comfortably is about 90 times / minute, and various rotations can be achieved while maintaining the pedal rotation number in the vicinity by changing the gear ratio. Training corresponding to the load can be performed.

FIG. 2 is a side view of another stationary bicycle training apparatus according to the first embodiment. The same reference numerals are given to the same components as those in FIG. 1, and the description thereof is omitted. The drive side gear 9 is composed of a plurality of gears connected coaxially, and is provided with a drive side derailleur 20 in the vicinity of the drive side gear 9 in order to switch the gears that hang the chain 12, and operates the shift lever 21. Then, a lateral force acts on the chain 12 via the speed change wire 22, and the gear of the drive side gear 9 that hangs the chain 12 is switched to change the speed ratio. By adopting this structure, it is possible to shift in a finer step and in a wider range by selecting both the drive side gear 9 and the driven side gear 13. As a result, muscle strength and endurance training can be performed more comfortably.

In the conventional stationary bicycle training apparatus, as the load intensity increases for climbing training, a stronger stepping torque is required, and the number of revolutions of the pedal 11 gradually decreases, and the pedal 11 can finally be rotated. Disappear. That is, the load that prevents the pedal 11 from rotating is the upper limit of the strength of the load that can be trained, the range of the load that can be trained is narrow, and the load amount cannot be increased at a constant pitch. It is a drawback.

On the other hand, in a conventional outdoor training bicycle, the rotational torque of the front gear generated by rotating the pedal is transmitted to a rear gear composed of a plurality of gears, and is transmitted to a rear wheel mounted coaxially with the rear gear. In the case of this structure, when the load on the rear wheel is increased in climbing training, the rear derailleur can smoothly climb up the slope by changing the gear ratio to the gear ratio suitable for the user as needed. In other words, when the slope of the slope increases, it is possible to climb the slope without reducing the speed of the pedal extremely by reducing the gear ratio. As the load intensity increases for climbing training, instead of increasing the stepping torque by reducing the gear ratio from the rear derailleur, the increase in load is compensated by increasing the number of pedal rotations. Yes. Therefore, it is possible to train to a stronger rotational load while maintaining a stepping torque preferable for the user. Also, by changing the gear ratio step by step, the rotational load increases more smoothly and the upper limit of the strength of the load that can be trained becomes larger than when there is no speed change function.

Since the stationary training bicycle is used indoors, it is required that the noise is low, but in this embodiment, the clutch is attached between the rotating shaft of the rotational load device 17 and the flying wheel, Since this portion is shielded from the outside, it is possible to suppress the generation of clutch sound to the outside.

FIG. 3 is an enlarged view of a connecting portion between the handle 5 and the handle support 6. A handle shaft 24 having bearings 23 at both ends is inserted into the pipe-like support 6, and a screw cap 25 is provided at the upper end of the support 6. A rubber packing 26 is inserted between them. By rotating the screw of the lid portion 25, the stress applied to the rubber packing 26 varies, the rubber packing is distorted, and the braking force on the handle 5 can be adjusted. Therefore, according to the stationary bicycle training apparatus according to the present application, even in indoor training, when this handle is moved as necessary, a handle load close to actual driving is applied to the handle, and training with a sense of reality can be performed. it can.

Although not shown, a display panel for displaying the state of training, that is, the rotation speed, the speed, the elapsed time, the calorie consumption, the strength of the load, the gear ratio, and the like may be attached in the vicinity of the handle 5.

FIG. 4 is a plan view (A) of a fixing base for fixing the training apparatus according to Embodiment 1 of the present invention, and a cross-sectional view (B) when cut along the XY line. In FIG. 2A, the fixing base is attached to the metal base bar 31 in the vertical direction, the support plate 32 attached in the lateral direction before and after the lower surface of the base bar 31, and the lower surfaces of both ends of each support plate 32. It is made of a flexible pedestal 33. The support plate 32 can be structured to use a metal or plastic leaf spring and swing laterally. The front support plate 32 is provided with two screw holes for attaching an inverted U-shaped front support column. In FIG. 2B, a base bar 31 is fixed to a support plate 32 with screws, and the support plate 32 is attached to a pedestal 33 having a built-in coil spring 34.

As described above, by attaching the fixed base shown in FIG. 4 to the fixed training apparatus, when the user steps on the foot pedal, the fixed base deforms in response to the strength of the force and the movement of the weight. Then, the frame 4 and the handle 5 are tilted to the left and right or fluctuate up and down, so that it is possible to feel like actually climbing up a slope on the outdoors.

(Embodiment 2)
FIG. 5 is a side view of the training apparatus according to the second embodiment of the present invention, and the drive mechanism is the same as that of the first embodiment, but the frame is used so that the climbing training can be performed with a more realistic feeling. The difference from the first embodiment is that a mechanism for tilting 4 more greatly in the front-rear direction is provided. The same or similar members as those used in FIG.

The front support body includes a front support column 2 and a movable support column 40 which is connected to the front support column 2 upright in parallel. A handle 5 is attached to the front column 2 via a handle support 6 so as to be extendable and rotatable, and a saddle 7 is attached to the frame 4 connected to the rear column 3 to be extendable. The lower ends of the rear column 3 and the movable column 40 are attached to a fixed base 50 having a rotation axis. Since the mechanism for transmitting the rotational force of the foot pedal 11 to the rotational load device 17 is the same as in the first embodiment, the description thereof is omitted.

The movable strut 40 includes a threaded shaft 41, an outer pipe 42 having a lid portion through which the threaded shaft 41 passes, and an inner pipe 44 having a threaded lid 43. The outer pipe 42 is fixed to the front strut 2. ing. The threaded shaft 41 is provided with a dial 45 on the upper surface of the outer pipe 42, penetrates the lid, is provided with a fixing nut 46 below the lid, and is screwed into the threaded lid 43 on the upper surface of the inner pipe below. In order to facilitate the rotation of the dial 45, a bearing 47 is inserted between the lid of the outer pipe 42 and the fixing nut 46.

By rotating the dial 45, the outer pipe 42 and the front support column 2 move up and down, and the frame 4 can be given a desired inclination according to the purpose of training. For example, for training corresponding to a climb of 10 m at a horizontal distance of 100 m, that is, a slope with a climbing gradient of 10%, if the distance between the front and rear fixed bases 42 is 100 cm, the dial of the movable support column is rotated to 10 cm. Just lift it up.

In the present embodiment, the movable support column 40 using a threaded shaft is used to lift the front of the frame 4, but a similar action can be obtained using a jack using pneumatic pressure. In the above method, the movable support column 40 is provided in addition to the front support column 2 to lift the front of the frame 4. However, the front support column 2 has a double structure of an inner pipe and an outer pipe, and is similar to the movable support column. It is also possible to lift the front of the frame by a desired height with this mechanism.

FIG. 6 shows a fixed base in the second embodiment. FIG. 4A is a cross-sectional view seen from the front, and FIG. 4B is a cross-sectional view seen from the side. The fixed base 50 rotatably supports the movable support column 40 and the rear support column 3. The lower ends of the support columns 3 and 40 are formed in a concave shape in cross section, and the lower ends thereof are fitted into the rotary shaft 51 on the fixed table. Yes. The rotating shaft 51 is attached to the left and right to penetrate the fixed base. A pedestal 52 incorporating a coil spring 34 is attached to the lower surface of the fixed base 50.

In outdoor bike training, the ratio of muscle parts used differs between training on flat roads and climbing slopes. This is because when climbing up a hill, the bicycle leans and the front part rises, so that muscle parts that are not often used when running on flat roads are used. Therefore, in this embodiment, by raising the handle portion at the front of the bicycle and inclining it, it is possible to perform training for increasing the muscular strength, which is the same as that for running on a hill in the room, as compared with the case of the first embodiment. In addition, in the operation of the foot pedal, it is possible to cultivate a sense of balance such as moving the weight and climbing up the slope.

Industrial applicability

  Since the stationary training bicycle according to the present invention transmits the rotational torque of the pedal to the rotary load device with a speed change function, even if the strength of the load changes, the preferable number of pedal rotations can be maintained and the outdoor can be comfortably provided. It enables muscle strength training similar to running. Furthermore, slope training can be performed indoors by lifting the movable support attached to the front support.

The side view of the fixed-type bicycle training apparatus in Embodiment 1 of this invention. The side view of another fixed type bicycle training apparatus in Embodiment 1 of this invention. The enlarged view of the connection part of a handle and a handle support body. FIG. 2 is a fixing base for fixing the training apparatus according to Embodiment 1. FIG. Side view of training apparatus according to Embodiment 2 FIG. 9 is a fixing table for fixing the training apparatus according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed base 2 Front side support | pillar 3 Rear side support | pillar 4 Frame 5 Handle 6 Handle support body 7 Saddle 8 Crankshaft 9 Drive side gear 10 Crank 11 Foot pedal 12 Chain 13 Drive side gears 14, 21 Shift lever 15 Shift wire 16 Drive side derailleur 17 Rotating load device 18 Load control lever 19 Control wire 20 Drive-side derailleur 22 Shifting wire 23 Bearing 24 Handle shaft 25 Threaded lid 26 Rubber packing 31 Base bar 32 Support plate 33 Base 34 Coil spring 40 Movable strut 41 Threaded shaft 42 Outside Pipe 43 Threaded lid 44 Inner pipe 45 Dial 46 Fixing nut 47 Bearing 50 Fixing base 51 Rotating shaft 52 for fixing base

Claims (12)

A frame disposed on a fixed base installed on the floor; a handle and a saddle respectively attached to the front and rear of the frame; a crankshaft penetrating the lower side of the frame on both sides; and In a training bicycle comprising a crank with a foot pedal attached to both ends of a crankshaft, a rotational load device, and a transmission means for transmitting the rotational force of the crank to the rotational load device, the rotational force of the crank is changed. After being transmitted to the machine, the structure is transmitted to a rotary load device coaxially connected to the center axis of the transmission, and can be trained at a preferable pedal rotation speed regardless of the load intensity by the rotary load device. Fixed bicycle training device. A chain in the vicinity of the driven gear by operating a shift lever, and a driven gear in which the transmission is connected to a central shaft of a rotary load device and a plurality of gears having different numbers of teeth are connected in a coaxial shape. The stationary bicycle training apparatus according to claim 1, further comprising a driven derailleur for applying a lateral force to the chain and changing a gear for hanging the chain. The transmission has a drive-side gear formed by coaxially connecting a plurality of gears having different numbers of teeth connected to the central axis of the crankshaft, and a plurality of different numbers of teeth connected to the central axis of the rotary load device. To change the gears that hang the chain by operating a driven gear that is connected to the same gear and a drive-side shift lever to apply a lateral force to the chain in the vicinity of the drive-side gear. Drive side derailleur, and a driven side derailleur for changing a gear for hanging the chain by applying a lateral force to the chain in the vicinity of the driven side gear by operating the shift lever on the driven side. The stationary bicycle training apparatus according to claim 1. The fixed bicycle training apparatus according to any one of claims 1 to 3, wherein a clutch mechanism is provided on a central axis of the rotational load device. The fixed bicycle training apparatus according to claim 1, wherein the rotational load device is attached in front of a foot pedal. 6. The stationary bicycle training apparatus according to claim 1, wherein the handle is rotatably attached to the handle support so that the handle has a braking mechanism with respect to rotation. The braking mechanism comprises an outer pipe, a handle shaft inserted into the outer pipe, a bearing and a rubber packing attached to the handle shaft, and is provided at either the upper end and the lower end of the outer pipe, or the upper end or the lower end. 7. The stationary bicycle training apparatus according to claim 6, wherein the stationary bicycle training apparatus comprises an attached fastening screw, and the braking action against the rotation of the handle is made variable by adjusting the fastening screw. A fixed bicycle training apparatus comprising a vertical base bar, support plates attached laterally before and after the lower surface of the base bar, and elastic pedestals attached to both ends of each support plate Fixed base. The fixed base for a fixed type bicycle training apparatus according to claim 8, wherein the pedestal has a built-in coil spring. 8. A movable column that is juxtaposed to the front column that forms the frame and joined to the front column, and the height of the movable column can be changed according to a training target of the user. Fixed bicycle training device as described in. The fixed bicycle training apparatus according to claim 10, wherein a lower end of the movable support column and a lower end of the rear support column are arranged on a pedestal that is rotatable forward and backward. The fixed bicycle training apparatus according to claim 10, wherein a lower end of the movable support column and a lower end of the rear support column are arranged on a pedestal that is rotatable back and forth and is elastic.

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