JP2021109544A - bicycle - Google Patents

Abstract

To provide a bicycle capable of stably rolling even when being blown with a crosswind in the state that the entire adult bicycle is shielded with a cover in order to ensure safety in a case of a collision with an automobile or ensure comfort in a sweltering place or cold place.SOLUTION: A bicycle includes a front wheel 12 mounted on a front part of a bicycle body 2, a rear wheel 18 mounted on a rear part of the bicycle body 2, a left auxiliary wheel mechanism 60 disposed on the left side of the bicycle body, and a right auxiliary wheel mechanism disposed on the right side of the bicycle body 2. The left auxiliary wheel mechanism 60 (right auxiliary wheel mechanism) includes a left support link mechanism (right support link mechanism) mounted on the left part (right part) of the bicycle body 2, and a left auxiliary wheel 66 (right auxiliary wheel) mounted on the left support link mechanism (right support link mechanism). The left support link mechanism (right support link mechanism) can freely swivel between a left storage angle position (right storage angle position) positioned along the left side (right side) of the bicycle body 2 and a left work angle position (right work angle position) to which the left support link mechanism (right support link mechanism) swivels leftward outside (rightward outside).SELECTED DRAWING: Figure 1

Description

The present invention relates to a bicycle provided with training wheels.

It is known that children's bicycles have left and right training wheel mechanisms attached to both sides of the bicycle body to prevent rollover (see, for example, Patent Document 1). In this bicycle, the left side of the bicycle body is left. An auxiliary wheel mechanism is provided, and a right auxiliary wheel mechanism is provided on the right side thereof. The left training wheel mechanism includes a left support stay attached to the bicycle body and a left training wheel attached to the tip of the left support stay, and the upper end of the left support stay is a bicycle body (for example, a left chain stay). It is attached to the mounting bracket fixed to the left side. Further, the right training wheel mechanism includes a right support stay attached to the bicycle body and a right training wheel attached to the tip of the right support stay, and the upper end of the right support stay is the bicycle body (for example, the right chain stay). ) Is attached to the mounting bracket fixed to the right side.

In such a bicycle, when the bicycle body tilts to the left while driving, the left training wheel of the left training wheel mechanism touches the ground, and when the bicycle body tilts to the right, the right training wheel of the right training wheel mechanism. Is in contact with the ground, and the left and right training wheels are in contact with the ground in this way to prevent the bicycle body from rolling over.

Japanese Unexamined Patent Publication No. 10-16735

Even for adult bicycles, the entire bicycle may be covered to provide safety measures and to cope with extreme heat and cold regions. In such cases, training wheels may be provided to make it easier to fall over due to crosswinds. be. In an adult bicycle equipped with such training wheels, the left training wheels of the left training wheels project greatly to the left side of the bicycle body, and the right training wheels of the right training wheels mechanism project greatly to the right side of the bicycle body. For example, when driving on a busy road, the training wheels (or training wheels) may come into contact with the traveling vehicle, and therefore it is difficult to ensure safety when driving on such a road. ..

In order to ensure safety on high-traffic roads (that is, prioritize prevention of contact with automobiles over roll-over prevention), the left and right training wheel mechanisms may be removed. When traveling, it is necessary to reattach the removed left and right training wheel mechanisms to the bicycle body, and depending on the place of use, it is necessary to attach and remove the left and right training wheel mechanisms, which complicates the work.

An object of the present invention is to provide a bicycle capable of ensuring safety during running without attaching and detaching the left and right auxiliary wheel mechanisms.

The bicycle according to claim 1 of the present invention includes a bicycle body provided with saddle means on which the driver sits, front wheels rotatably supported by the front portion of the bicycle body, and rotatably mounted on the rear portion of the bicycle body. It is provided with a supported rear wheel, a left auxiliary wheel mechanism arranged on the left side of the bicycle body, and a right auxiliary wheel mechanism arranged on the right side of the bicycle body.
The left auxiliary wheel mechanism includes a left support link mechanism mounted on the left portion of the bicycle body and a left auxiliary wheel rotatably supported by the tip end portion of the left support link mechanism. Is rotatable between the left storage angle position located along the left side of the bicycle body and the left action angle position swiveled to the left outside from the left storage angle position.
Further, the right training wheel mechanism includes a right support link mechanism mounted on the right portion of the bicycle body and a right auxiliary wheel rotatably supported by the tip end portion of the right support link mechanism, and the right support is provided. The link mechanism is characterized in that it can rotate freely between a right storage angle position located along the right side of the bicycle body and a right action angle position swiveled to the right outside from the right storage angle position.

In this bicycle, the left training wheel mechanism is configured to be able to move up and down between the left lowering position where the left training wheel touches the ground and the left rising position where the left training wheel is away from the ground, and the right training wheel support mechanism is right. It is preferable to configure the training wheels so that they can move up and down between the right descending position where the training wheels touch the ground and the right rising position where the training wheels move away from the ground. By positioning the left training wheel mechanism in the left ascending position and the right training wheel mechanism in the right ascending position, it is possible to drive safely.

Further, in this bicycle, it is preferable that the left auxiliary wheel mechanism is provided with the left ascending prevention means and the right auxiliary wheel mechanism is provided with the right ascending preventing means. It is possible to prevent the main body from floating.

Further, in this bicycle, it is preferable to attach a support plate to the bicycle body, and by grounding the support plate on the ground, for example, the road is narrow and the left training wheel mechanism is stored at the left storage angle position, and the right training wheel mechanism is stored. Even if it is necessary to stop with the bicycle stored in the right storage angle position, the vehicle body can be stabilized and stopped. In addition, when the car is overtaken from behind in a strong wind, for example, the left and right auxiliary wheel mechanism is stored by temporarily rowing with only the left foot and hanging the right foot on the support plate and lowering the support plate until just before it touches the ground. Even if the bicycle body is about to fall due to a crosswind at the moment, this support plate comes into contact with the ground to prevent the bicycle from falling, and this support plate contributes to the prevention of the bicycle body from falling.

According to the bicycle of the present invention, the left training wheel mechanism is arranged on the left side of the bicycle body, and the right training wheel mechanism is arranged on the right side thereof. It can be prevented by the wheel mechanism, and the rollover to the right side can be prevented by the right training wheel mechanism.

Further, the left auxiliary wheel mechanism includes a left support link mechanism and a left auxiliary wheel rotatably supported at the tip of the left support link mechanism, and the left support link mechanism has a left storage angle position and a left working angle position. Since the bicycle can be swiveled between the bicycles, it is possible to reduce contact with the vehicle traveling on the left side of the bicycle body by storing the bicycle at the left storage angle position. Further, the right training wheel mechanism includes a right support link mechanism and a right auxiliary wheel rotatably supported at the tip of the right support link mechanism, and the right support link mechanism has a right storage angle position and a right working angle position. Since it can turn freely between the bicycles, by storing it in the right storage angle position, it is possible to reduce contact with the vehicle traveling on the right side of the bicycle body, for example, when traveling on a road with a lot of vehicle traffic. Safety can be ensured.

Furthermore, this bicycle also has the effect of reducing traffic fatal accidents. Until now, in order to prevent traffic fatal accidents, equipment such as seat belts, airbags, and automatic driving have been installed on the automobile side, measures such as turning on lights and wearing helmets have been taken on the bicycle side, and traffic lights on the road side. Maintenance such as installation has been carried out. Although there were certain effects due to the improvement and crackdown on these safety technologies, equipment such as autonomous driving is expensive and far from widespread, and there is a risk of erroneous driving control under various road conditions. Has not yet reached a technical solution in terms of safety.

On the other hand, since bicycles are much lighter than automobiles, the risk of serious injury to pedestrians can be greatly reduced in the unlikely event of an accident. For example, by covering the bicycle with a cover, it is possible to ensure the safety of a person who rides inside the bicycle as much as a car. Further, for example, by attaching an air conditioner to a bicycle, it is possible to provide comfort comparable to that of an automobile. For this reason, if many traffic users pay attention to the safety of bicycles and choose bicycles instead of automobiles, it is a realistic goal to reduce the number of fatalities in traffic accidents to zero per year.

In addition, this bicycle _{will contribute to reducing CO 2} emissions and the national budget. In Japan, eco-car subsidies are paid to promote the purchase of new cars with excellent environmental performance, but by popularizing this bicycle, it will be possible to move with less electricity than electric cars while suppressing tax expenditures. As a result, it can also contribute to the reduction of _{CO 2 emissions.}

The cross-sectional view which shows the 1st Embodiment of the bicycle according to this invention simply in a partial cross section. A simplified plan view showing a state when the left and right training wheel mechanisms of the bicycle of FIG. 1 are positioned at the working angle position, with a part omitted. FIG. 1 is a simplified plan view showing a state in which the left and right training wheel mechanisms of the bicycle of FIG. 1 are positioned at the storage angle position, with some parts omitted. FIG. 4A is a cross-sectional view showing a state in which the left and right training wheel mechanisms of the bicycle of FIG. 1 are positioned at the working angle position, and FIG. 4 (b) is a cross-sectional view showing a state in which the left and right training wheels are positioned in the ascending position. FIG. 5A is a cross-sectional view showing a state in which the left and right training wheel mechanisms of the bicycle of FIG. 1 are positioned at the storage angle position, and FIG. 5 (b) is a cross-sectional view showing a state in which the left and right auxiliary wheels are positioned in the ascending position. FIG. 5 is a cross-sectional view briefly showing a drive pedal and a drive force conversion mechanism in the bicycle of FIG. The plan view which shows by omitting a part of the 2nd Embodiment of the bicycle according to this invention. FIG. 5 is a cross-sectional view simply showing a third embodiment of a bicycle according to the present invention in a partial cross section. FIG. 5 is a cross-sectional view simply showing a fourth embodiment of a bicycle according to the present invention in a partial cross section.

Hereinafter, various embodiments of the bicycle according to the present invention will be described with reference to the accompanying drawings. First, the bicycle of the first embodiment will be described with reference to FIGS. 1 to 6. In FIG. 1, the illustrated bicycle includes a bicycle body 2 composed of various stays and the like. A saddle means 6 is provided at the upper end of the seat pipe 4 of the bicycle body 2, and in this embodiment, the saddle means 6 is composed of a seat-shaped saddle 8.

A front wheel 12 is arranged on the front portion of the bicycle body 2 (in this embodiment, a pair of front forks 10 of the bicycle body 2), and the front wheel 12 is rotatably supported between the pair of front forks 10. Further, a rear wheel 18 is arranged at the rear portion of the bicycle body 2 (in this embodiment, a connection portion between the pair of chain stays 14 and the pair of seat stays 16 of the bicycle body 2), and the rear wheels 18 are paired with the chain stay 14. And, it is rotatably supported between the connecting portions of the pair of seat stays 16 via the rear wheel axle 19.

A pair of drive pedals 22 and 24 (see FIG. 6) are mounted on the main body frame portion 20 of the bicycle main body 2 so as to be movable in the front-rear direction. With reference to FIG. 1 and FIG. 6, the main body frame portion 20 has a hollow shape that is long in the front-rear direction, and a driving force conversion mechanism 26 is built therein. The driving force conversion mechanism 26 is mounted on a moving rack 28 movably mounted in the main body frame portion 20 in the front-rear direction (horizontal direction in FIGS. 1 and 6) and a rack portion (not shown) of the moving rack 28. A meshed pinion 30 is provided, and the pinion 30 is rotatably supported by a main body frame portion 20 via a support shaft 32.

The drive pedals 22 and 24 are arranged on both sides of the bicycle body 2. One drive pedal 22 (left drive pedal) is arranged on the left side of the bicycle body 2, is attached to the front left side of the moving rack 28 via the left pedal arm 23, and the other drive pedal 24 (right drive pedal). Is arranged on the right side of the bicycle body 2, and is attached to the front right side of the moving rack 28 via the right pedal arm 25. Since the drive pedals 22 and 24 are attached in this way, by moving them in the front-rear direction, the moving rack 28 is moved to the forward position shown by the solid line in FIG. 6 and the backward position shown by the alternate long and short dash line in FIG. Move between.

One end of the support shaft 32 to which the pinion 30 is attached penetrates the main body frame 20 and projects outward, and a drive sprocket 34 is attached to the protruding end via a one-way clutch (not shown). This one-way clutch transmits the rotational power of the pinion 30 in a predetermined direction (direction for advancing the bicycle) to the drive sprocket 34, but transmits the rotational power in the direction opposite to the predetermined direction (direction for moving the bicycle backward) to the drive sprocket 34. There is no communication.

With this configuration, when sitting on the saddle means 6 (seat-shaped saddle 8) of the bicycle body 2 and pushing the pair of drive pedals 22 and 24 forward with both feet, the moving rack 28 moves from the backward position to the forward position. The pinion 30 is rotated by this movement, and the rotational power of the pinion 30 is transmitted to the drive sprocket 34 via a one-way clutch (not shown), and the drive sprocket 34 is defined integrally with the pinion 30. It is rotated in the direction.

A rear wheel sprocket 38 is attached to the rear wheel shaft 19 to which the rear wheel 18 is attached, and the rear wheel sprocket 34 and the rear wheel sprocket 38 are drive-connected via a drive chain 36. The rotational force is transmitted to the rear wheel sprocket 38 via the drive chain 36, the rear wheel 18 is rotated in a predetermined direction via the drive chain 36 and the rear wheel sprocket 38, and the rear wheel 18 is rotated in the forward direction. As shown in FIG. 6, a part of the drive sprocket 34 and the drive chain 36 may be covered with the right side cover 42.

When the pair of drive pedals 22 and 24 are pushed forward and then pulled backward (for example, a belt is attached to the drive pedals 22 and 24 so that the foot is hooked back on the belt), the moving rack 28 moves forward. It moves from the position to the retracted position, and this movement causes the pinion 30 to rotate in a direction opposite to the predetermined direction described above. At this time, the one-way clutch (not shown) does not transmit the rotational power from the pinion 30 to the drive sprocket 34, and the drive sprocket 30 is not rotated in the direction opposite to the predetermined direction. Since the driving force from the pair of driving pedals 22 and 24 is transmitted to the driving sprocket 34 in this way, the movement of the driving pedals 22 and 24 in the front-rear direction can be used to advance the bicycle. In order to allow the drive pedals 22 and 24 to move in the front-rear direction, the elongated holes 40 extending in the front-rear direction on both side surfaces (left and right side surfaces) of the main body frame portion 20 (only one elongated hole is shown in FIG. 1). ) Is provided, and the left pedal arm 23 and the right pedal arm 25 move in the front-rear direction in the elongated hole 40.

In a bicycle having such a structure, as can be understood from FIG. 1, the drive sprocket 30 is rotated by reciprocating the drive pedals 22 and 24 in the front-rear direction instead of rotating the drive pedals 22 and 24, so that the driver falls slightly backward. The drive pedals 22 and 24 are reciprocated according to the posture, and in connection with this, the total height of the bicycle can be lowered, and a bicycle having a low and stable center of gravity can be provided.

In this bicycle, as shown in FIG. 1, a front storage car 44 is attached to a handle 42 (between the left and right handle portions) for changing the traveling direction of the front wheel 12. Further, an auxiliary seat 46 is attached to the rear portion of the bicycle body 2. The auxiliary seat 46 is for sitting and riding a child, and is a two-person bicycle for a driver sitting on the saddle means 6 and a child sitting on the auxiliary seat 46.

Further, in this bicycle, the driver sitting on the saddle means 6, the child sitting on the auxiliary seat 46, the luggage stored in the front storage basket 44, and the like are covered with the transparent cover body 48 so as not to get wet with rain. As shown in FIGS. 1 and 2, the transparent cover body 48 extends in the front-rear direction from the front side of the handle 42 (left and right handle portions) to the rear side of the auxiliary seat 46, and laterally extends from the left side of the saddle means to the right side thereof. It is extending. Such a transparent cover body 48 is manufactured by using a synthetic resin panel, a synthetic resin molded product, or the like, and is attached to a required portion of the bicycle body 2 with mounting screws, mounting bolts, nuts, or the like.

The transparent cover body 48 is provided with an opening / closing cover 50 for a driver and an opening / closing cover 52 for a child. The driver's opening / closing cover 50 is provided on the side of the saddle means 6 in relation to the saddle means 6, and by opening the driver's cover 50, the side of the saddle means 6 is opened so that the driver can get on and off the saddle means 6. It can be carried out. In this embodiment, by opening the driver's opening / closing cover 50, luggage and the like can be stored and taken out in the front storage car 44. Further, the child cover 52 is provided from the rear side to the upper side in relation to the auxiliary seat 46, and by opening the child cover, the rear side and the upper side of the auxiliary seat are opened, and the child to the auxiliary seat 46 is opened. You can easily get on and off the train.

This bicycle is equipped with a transparent cover body 48 and the like, which makes the bicycle somewhat larger, and it is necessary to ensure the safety of the child in order to put the child on the auxiliary seat 46. The left auxiliary wheel mechanism 60 is provided on the left side of No. 2, and the right auxiliary wheel mechanism 62 is provided on the right side thereof. With reference to FIGS. 2 to 5, the left training wheel mechanism 60 is rotatably mounted on the left support link mechanism 64 mounted on the left portion of the bicycle body 2 and the tip end portion of the left support link mechanism 64. It is equipped with left auxiliary wheels 66.

As shown in FIGS. 2 and 3, the left training wheel mechanism 60 (left support link mechanism 64) has a left storage angle position (angle position shown in FIG. 3) located along the left side of the bicycle body 2 and the left auxiliary wheel mechanism 60. It is mounted so that it can swivel between the left storage angle position and the left working angle position (angle position shown in FIG. 2) that swivels approximately 90 degrees to the left outside and extends laterally. In the state of being positioned at the left storage angle position, the left auxiliary wheel mechanism 60 (left support link mechanism 64) is located close to the left side of the bicycle body 2, and is compactly housed on the left side. For example, it does not get in the way of the vehicle traveling on the left side of the bicycle. Further, in the state of being located at the left working angle position, the left auxiliary wheel mechanism 60 (left support link mechanism 64) extends from the bicycle body 2 to the left lateral side at a substantially right angle, and the left auxiliary wheel 66 extends to the ground E (FIGS. 1, FIG. 4 and FIG. 5) are grounded to prevent the bicycle body 2 from tilting to the left.

Further, the right training wheel mechanism 62 includes a right support link mechanism 68 mounted on the right portion of the bicycle body 2 and a right auxiliary wheel 70 rotatably mounted on the tip end portion of the right support link mechanism 68. There is. The right auxiliary wheel mechanism 62 (right support link mechanism 68) has a right storage angle position (angle position shown in FIG. 3) located along the right side of the bicycle body 2 and approximately 90 to the right outside from the right storage angle position. It is mounted so that it can swivel between it and the right-angled position (angle position shown in FIG. 2) that swivels and extends laterally. In the state of being located at the right storage angle position, the right auxiliary wheel mechanism 62 (right support link mechanism 68) is located close to the right side of the bicycle body 2, and is compactly housed on the right side, and the right auxiliary wheel mechanism 62 is accommodated. For example, it does not get in the way of the vehicle traveling on the right side of the bicycle. Further, in the state of being located at the right working angle position, the right training wheel mechanism 62 (right support link mechanism 68) extends from the bicycle body 2 to the right lateral side at a substantially right angle, and the right training wheel 70 touches the ground E and the bicycle. Prevents the main body 2 from tilting to the right.

In this embodiment, the left support link mechanism 64 and the right support link mechanism 68 have substantially the same symmetrical structure. That is, the left support link mechanism 64 (right support link mechanism 68) includes a pair of support links 72, 74 arranged at intervals in the front-rear direction, and the bases of these support links 72, 74 are attached to the bicycle body 2. It is mounted so that it can rotate freely. Further, the tips of the pair of support links 72 and 74 are rotatably connected via the connection link 76, and the tips of the left support link mechanism 64 (right support link mechanism 68) (in this embodiment, the support link 72). The left auxiliary wheel 66 (right auxiliary wheel 70) is rotatably attached to the tip portion). By adopting such a left support link mechanism 64 (right support link mechanism 68), the left support wheel 66 (right support ring 70) can be moved to the left storage angle position (right storage angle position) and the left action angle position (right action). It is possible to make a stable turn between the angle position and the position.

In this embodiment, as shown in FIGS. 4 and 5, auxiliary links 79 formed in a substantially triangular frame shape are fixed to the support links 72 and 74 of the left support link mechanism 64 (right support link mechanism 68). (Only the auxiliary link 79 provided on the support link 72 is shown), the support link 72 and one auxiliary link 79 are rotatably connected between the pair of support brackets 78 and 80, and the support link 74 and the other auxiliary link are connected. Although not shown, the strength of the left support link mechanism 64 (right support link mechanism 68) is increased by rotatably connecting the pair of support brackets to each other like the support link 72. At the same time, the left support link mechanism 64 (right support link mechanism 68) can be stably swiveled and moved.

In this embodiment, the bicycle body 2 is provided with a reinforcing frame body 73, and a part of the transparent cover body 48 is attached to the reinforcing frame body 73. As shown in FIGS. 4 and 5, the reinforcing frame body 73 is provided so as to surround the saddle means 6 (seat-shaped saddle 8), and is provided so as to protect the driver who sits on the saddle means 6 and drives. There is.

The floor portion 75 of the reinforcing frame body 73 is provided with an operation handle 77 for operating the left training wheel mechanism 60 and the right training wheel mechanism 62, and although not shown, the operation handle 77 is the left training wheel mechanism. It is operated and connected to 60 (left support link mechanism 64) and right auxiliary wheel mechanism 62 (right support link mechanism 68). Therefore, when the operation handle 77 is swiveled in a predetermined direction, the left support link mechanism 64 and the right support link mechanism 68 move from the left storage angle position and the right storage angle position (angle position shown in FIG. 3) to the left working angle position and the right. When the operation handle 77 is swiveled to the working angle position (angle position shown in FIG. 2) and the operation handle 77 is swiveled in the direction opposite to the predetermined direction, the left support link mechanism 64 and the right support link mechanism 68 move to the left working angle position and the above. It is swiveled from the right working angle position to the left storage angle position and the right storage angle position.

In this embodiment, the left auxiliary wheel mechanism 60 and the right auxiliary wheel mechanism 62 are further configured as the training wheel elevating unit 82, and the training wheel elevating unit 82 is in the descending position (that is, FIGS. 4A and 5). It is configured to be able to move up and down between the position shown in a) and the ascending position (that is, the positions shown in FIGS. 4B and 5B). A pair of hanging support portions 84 are provided on the bottom portion 75 of the reinforcing frame body 73 of the bicycle body 2 at intervals in the front-rear direction (only one is shown in FIGS. 4 and 5), and the hanging support portions 84 are assisted. The wheel elevating unit 82 is mounted so as to be able to move up and down. Although not shown, the training wheel elevating unit 82 may be provided with, for example, an elevating handle and the elevating handle may be rotated to move up and down, or a battery power source and an electric motor may be mounted and the electric motor may be supplied by the battery power source. May be operated to move up and down.

When the training wheel elevating unit 82 (left training wheel mechanism 60 and right training wheel mechanism 62) is in the lowering position (left lowering position and right lowering position), as shown in FIGS. 4A and 5A. , The left training wheel 66 of the training wheel mechanism 60 and the right training wheel 70 of the right training wheel mechanism 62 are in contact with the ground E, and are in this descending position (left descending position and right descending position) and in the working angle position (left working angle). When positioned at the position (position and right working angle position), as shown in FIGS. 2 and 4A, the left training wheels 66 of the left training wheels mechanism 60 and the right training wheels 70 of the right training wheels mechanism 62 are bicycles. The bicycle body 2 is located on both sides of the body 2 and is in contact with the ground E. By maintaining this state, the bicycle body 2 can be prevented from tilting to the left by the left training wheel mechanism 60, and the bicycle body 2 can be prevented from tilting to the left side. The tilting of 2 to the right side can be prevented by the right training wheel mechanism 62.

Further, when the training wheel elevating unit 82 (left training wheel mechanism 60 and right training wheel mechanism 62) is in the ascending position (left ascending position and right ascending position), it is shown in FIGS. 4 (b) and 5 (b). As described above, the left auxiliary wheel 66 of the left training wheel mechanism 60 and the right training wheel 70 of the right training wheel mechanism 62 rise and separate from the ground E and do not come into contact with the ground E. For example, when the road on which the vehicle travels has irregularities, the left auxiliary wheel 66 and the right auxiliary wheel 70 are affected by the unevenness of the road, making it difficult to travel. The training wheel mechanism 60 and the right training wheel mechanism 62) are positioned at the ascending positions (left ascending position and right ascending position) so that the left auxiliary wheel 66 and the right auxiliary wheel 70 do not touch the ground E.

When traveling on this bicycle, as shown in FIG. 1, the training wheel elevating unit 82 (left training wheel mechanism 60 and right training wheel mechanism 62) is positioned at the descending position (left descending position and right descending position), and the bicycle body 2 In addition to the front wheels 12 and the rear wheels 18, the left training wheels 66 and the right training wheels 70 are brought into contact with the ground E. Then, in such a state, the pair of drive pedals 22 and 24 may be reciprocated in the front-rear direction while sitting on the saddle means 6 (seat-shaped saddle 8). When the drive pedals 22 and 24 are moved in this way, the moving rack 28 is reciprocated together with the drive pedals 22 and 24 to rotate the pinion 30, and the rotational force of the pinion 30 when moving the moving rack 28 to the front side. Is transmitted to the drive sprocket 34 via a one-way clutch (not shown), and the driving force from the drive sprocket 34 is transmitted to the rear wheels 18 via the drive chain 36 and the rear wheel sprocket 38. Is rotated in the forward direction and the bicycle travels forward.

In this embodiment, the chain 36 is used to drive the rear wheels 18, but a drive belt (for example, a toothed drive belt) may be used instead of the chain 36. In this case, the drive sprocket 34 And, instead of the rear wheel sprocket 38, a drive pulley (for example, a toothed drive pulley) and a rear wheel pulley (for example, a toothed drive pulley) can be used.

Next, with reference to FIG. 7, a second embodiment of the bicycle according to the present invention will be described. In the following embodiments, substantially the same members as those in the above-described first embodiment are designated by the same reference numbers, and the description thereof will be omitted.

In FIG. 7, in the bicycle of the second embodiment, the training wheel elevating unit 82A (left training wheel mechanism 60A and right training wheel mechanism 62A) mounted on the bicycle body 2A is attached to the lifting prevention means 92 (left floating). The bicycle prevention means 94 and the right floating prevention means 96) are provided. In this embodiment, the left floating prevention means 94 is composed of a floating prevention fan 98, and is attached to the support link 72 of the left training wheel mechanism 60A (that is, the support link to which the left training wheel 66 is attached). .. Further, the right floating prevention means 96 is composed of a floating prevention fan 100, and is attached to a support link 72 (support link to which the right auxiliary wheel 70 is attached) of the right auxiliary wheel mechanism 62A.

The left lift prevention fan 98 and the right lift prevention fan 100 are rotated so as to generate an air flow from the bottom to the top, and the reaction of the air flow causes the left training wheel mechanism 60A (left support arm mechanism 64). The support link 72 and the support link 72 of the right training wheel mechanism 62A (right support arm mechanism 68) generate a downward pressing force, which causes the left training wheel 66 of the left training wheel mechanism 60A and the right of the right training wheel mechanism 62A. The lifting of the training wheels 70 from the ground can be suppressed, and stable running can be achieved by suppressing the lifting of the right training wheel mechanism 60A and the left training wheel mechanism 62A, for example, when the wind is strong. Other configurations of the bicycle of this second embodiment are substantially the same as those of the first embodiment described above.

Next, a third embodiment of the bicycle according to the present invention will be described with reference to FIG. In this third embodiment, a support plate is provided on the bottom of the bicycle body separately from the normal brake.

In FIG. 8, in the illustrated form, a support plate 112 is provided on the bicycle body 2B, and the support plate 112 is rotatably attached to the bottom of the bicycle body 2B via a support arm 114. The support arm 114 is configured to be swiveled by, for example, a support lever (not shown), and when the support lever is operated to the ground contact position, the support arm 114 swivels downward as shown by a solid line in FIG. Then, the support plate 112 comes into contact with the ground E and contributes to the posture stability of the bicycle body 2B even in a narrow place. Further, although not shown, a bellows structure may be provided between the support plate 112 and the transparent cover body 48 to prevent outside air from entering from the feet.

Further, when the support lever is operated to the non-grounded position, as shown by the alternate long and short dash line in FIG. 8, the support arm 114 turns upward, the support plate 112 moves upward from the ground E, and the contact with the ground E comes into contact with the ground E. It is released and the support is released. Other configurations of the bicycle of this third embodiment are substantially the same as those of the first embodiment described above.

Next, a fourth embodiment of the bicycle according to the present invention will be described with reference to FIG. In this fourth embodiment, it is applied to a mode in which the drive pedal is rotated to travel.

In FIG. 9, in this embodiment, the drive pedals 22C and 24C are rotatably mounted on the bicycle body 2C, and the drive sprocket 30C is attached so as to rotate integrally with the drive pedals 22C and 24C. The drive sprocket 30C is drive-connected to the rear wheel sprocket 38 via a drive chain 36. In this regard, as the saddle means 6C, a normal sitting type saddle 8C is used. With this configuration, when the drive pedals 22C and 24C are rotationally driven, this rotational force is transmitted to the rear wheels 18 via the drive sprocket 30C, the drive chain 36, and the rear wheel sprocket 38, whereby the bicycle can be moved. Drive forward.

In the fourth embodiment, the bicycle of such a form is also equipped with the left training wheel mechanism 60C and the right training wheel mechanism (not shown) as described above. That is, although the left training wheel mechanism 60C is not shown, it is mounted on the bicycle body 2C so as to be able to swivel between the left storage angle position and the left working angle position, and further left descending position (the left training wheel 66 is on the ground E). It is mounted so as to be able to move up and down between the position where it touches the ground) and the position where the left auxiliary wheel 66 is separated from the ground. Further, although the right training wheel mechanism is not shown, it is mounted on the bicycle body 2C so as to be able to swivel between the right storage angle position and the right working angle position, and further to the right descending position, like the left training wheel mechanism 60C. It is mounted so that it can move up and down between (the position where the right training wheels touch the ground E) and the right ascending position (the position where the right training wheels are separated from the ground).

Further, the transparent cover body 48C attached to the bicycle body 2C has a high position of the handle 42C (left and right handle portions) and the saddle means 6C, as can be easily understood by comparing FIGS. 9 and 1. The height of the bicycle body 2C is somewhat higher, and in connection with this, the front part of the transparent cover body 48C (above the handle 42C and the saddle means 6C) is raised. Further, a driver opening / closing cover 50C is provided on the side corresponding to the saddle means 6C so as to be openable / closable, and the size (height) of the driver cover 50C is larger than that of the first embodiment. Is also getting bigger.

In connection with such a configuration of the bicycle body 2C, a front stand 122 is further provided on the front side (specifically, the upper side of the front wheel 12) of the bicycle body 2C, and the front storage car 44C is attached to the front stand 122. Has been done. Further, the transparent cover body 48C is provided so as to cover the front storage car 44C, the saddle means 6C and the auxiliary sheet 46 attached to the front storage base 122, and opens and closes for storage / removal corresponding to the front storage car 44C. The cover 122 is provided so as to be openable and closable. The other configurations in this fourth embodiment are substantially the same as those in the first embodiment described above.

Although various embodiments of the bicycle according to the present invention have been described above, the present invention is not limited to such embodiments, and various changes or modifications can be made without departing from the scope of the present invention.

2,2A, 2B, 2C Bicycle body 6,6C Saddle means 12 Front wheels 18 Rear wheels 22, 22C, 24, 24C Drive pedals 26 Driving force conversion means 28 Mobile rack 30 Pinion 44, 44C Front storage basket 46 Auxiliary seats 48, 48C Transparent cover body 60, 60A, 60C Left auxiliary wheel mechanism 62, 62A Right auxiliary wheel mechanism 64, 64A Left support link mechanism 66 Left auxiliary wheel 68, 68A Right support link mechanism 70 Right auxiliary wheel 82, 82A Auxiliary wheel elevating unit 92 Lifting Prevention means 94 Left lift prevention means 96 Right lift prevention means 112 Support plate

Claims (4)

A bicycle body provided with saddle means on which the driver sits, front wheels rotatably supported by the front part of the bicycle body, rear wheels rotatably supported by the rear part of the bicycle body, and the left side of the bicycle body. The left auxiliary wheel mechanism arranged in the bicycle and the right auxiliary wheel mechanism arranged on the right side of the bicycle body are provided.
The left auxiliary wheel mechanism includes a left support link mechanism mounted on the left portion of the bicycle body and a left auxiliary wheel rotatably supported by the tip end portion of the left support link mechanism. Is rotatable between the left storage angle position located along the left side of the bicycle body and the left action angle position swiveled to the left outside from the left storage angle position.
Further, the right training wheel mechanism includes a right support link mechanism mounted on the right portion of the bicycle body and a right auxiliary wheel rotatably supported by the tip end portion of the right support link mechanism, and the right support is provided. The link mechanism is a bicycle characterized in that it can rotate freely between a right storage angle position located along the right side of the bicycle body and a right action angle position swiveled to the right outside from the right storage angle position. The left training wheel mechanism can move up and down between a left descending position where the left training wheel touches the ground and a left rising position where the left training wheel separates from the ground, and the right training wheel support mechanism The bicycle according to claim 1, wherein the right auxiliary wheel can move up and down between a right descending position where the right auxiliary wheel touches the ground and a right rising position where the right auxiliary wheel separates from the ground. The left auxiliary wheel mechanism is provided with left lift prevention means for preventing the left auxiliary wheel from lifting, and the right auxiliary wheel mechanism is for preventing the right auxiliary wheel from lifting. The bicycle according to claim 1 or 2, wherein the right floating prevention means is provided. A support plate is attached to the bicycle body, and the support plate can move up and down between a grounding position that supports the bicycle body by touching the ground and a non-grounding position that is away from the ground. The bicycle according to claim 1, wherein the bicycle is characterized in that.

Images