JP2001225784A - Drive mechanism for manual travel vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive mechanism for a manual travel vehicle allowing a smooth start regardless of the position of a pedal, preventing a danger to engulf feet for other motive power, and having excellent operability and safety. SOLUTION: A one-way sprocket 21 is connected to the axle 12 of wheels 4, and only the motion of its gear section in the direction of an arrow E is transmitted to the axle 12 as a rotary motion. A rod-like member 23 is connected to the pedal 15, and the motion generated when the pedal 15 is depressed is transmitted to the one-way sprocket 21 as the motion in the direction of the arrow E. The rod-like member 23 has a coupling section capable of being coupled with the gear section of the one-way sprocket 21. When the pedal 15 is depressed, the motion is transmitted to the one-way sprocket 21 by the rod-like member 23 and is converted into the rotary motion of the axle 12 by the one-way sprocket 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving mechanism applied to various types of vehicles (man-powered vehicles) that run manually, and more particularly to a foot pedal that allows an infant or the like to step on a pedal system. The present invention relates to a drive mechanism most suitable for use in a car or the like.

[0002]

2. Description of the Related Art As a conventional human-powered vehicle, for example, as represented by a wheeled vehicle manufactured for infants, a pedal depressing motion is converted into a rotational motion by a crank mechanism and transmitted to a wheel shaft. Such a so-called crank type is generally well known.

[0003]

However, the following problems occur in the above-mentioned conventional crank-type human-powered vehicle.

[0004] First, since a crank mechanism generally has a "dead center" which is an unavoidable problem, depending on the position of the pedal at the time of starting the depression, the vehicle may not be able to start even if the pedal is depressed no matter how strongly. Occurs. In such a case, there is an inconvenience that the vehicle must be moved slightly forward or backward, the position of the pedal must be shifted from the "dead center", and then the driver must depress and start again.

Second, since the pedal is directly connected to the wheels, other power that does not depend on its own power, such as when another person pushes the car from behind, or when the car naturally moves forward due to a downhill, etc. When the pedal is added, the pedal moves without permission of the operator of the car (saw hand), and there is a danger that the foot may be involved in the pedal and cause injury.

The present invention has been made in consideration of the above-mentioned conventional problems, and has been made in consideration of the above-described conventional operation, in which the pedal can be started smoothly regardless of the position of the pedal and there is no danger of the foot being caught by other powers. An object of the present invention is to provide a driving mechanism for a human-powered vehicle that is excellent in operability and safety.

[0007]

The present invention has the following configuration to solve the above-mentioned problems. That is, the present invention relates to a drive mechanism for converting a reciprocating motion of a pedal in a human-powered traveling vehicle into a rotational motion of a wheel.
And "reciprocating motion transmitting means".

The one-way transmission means is connected to a wheel axle of the wheel, and transmits only the movement in a predetermined one direction transmitted from the other as a rotational movement to the wheel axle. As such a one-way transmission means, for example, a one-way sprocket used in a general bicycle can be adopted.

The reciprocating motion transmitting means is connected to the pedal, and transmits to the one-way transmitting means the motion when the pedal is depressed in the reciprocating motion of the pedal as the motion in the predetermined one direction. As such a reciprocating motion transmitting means, for example, a rod-shaped member extending from the pedal to the one-way transmitting means can be adopted, and when the one-way sprocket as described above is employed as the one-way transmitting means, What is necessary is just to provide the said rod-shaped member with the structure equivalent to the chain which can be engaged with this one-way sprocket.

According to the present invention having such a configuration,
When you depress the pedal, the movement is called "reciprocating movement transmission means"
Is transmitted to the "one-way transmission means", and further converted to the rotational motion of the wheel shaft by the "one-way transmission means". On the other hand, when the pedal moves in the opposite direction to when the pedal is depressed,
The motion is transmitted to the "one-way transmission means" by the "reciprocating motion transmission means", but the "one-way transmission means" does not transmit it to the wheel shaft. That is, by reciprocating the pedal, the motion is converted into the rotational motion of the wheel shaft only when the pedal is depressed.

As described above, the present invention employs a unique mechanism for converting the movement of the pedal into the rotational movement of the wheel shaft only when the pedal is depressed, without employing the crank mechanism. Smooth starting is possible regardless of the position of the pedal.

In addition, since the "one-way transmission means" is particularly employed, even if the above-mentioned other power is applied to the vehicle, the transmission of the motion from the wheels to the pedals is cut off. As with a bicycle, only the wheels rotate and the pedals do not move freely. Therefore, it is possible to run the vehicle with the foot resting on the pedal, and as a result, the conventional danger that the foot is involved in the free movement of the pedal is avoided.

A more desirable embodiment of the present invention will be described below. (1) When a one-way transmission means such as a one-way sprocket is employed, the vehicle can move forward by transmitting the pedal depressing motion to the wheel shaft. On the other hand, the vehicle may be moved backward by another power. In this case, since the rotational motion of the wheel shaft is transmitted to the reciprocating motion transmitting means via the one-way transmitting means, the vehicle cannot be continuously moved backward.

Therefore, in order to enable the vehicle to retreat, the reciprocating motion transmitting means includes an engaging portion engageable with the one-way transmitting means when the pedal is depressed, and a one-way transmitting means when the pedal is not depressed. It is desirable to have a non-engagement part for avoiding engagement with the non-engagement part. For example, when the above-described one-way sprocket is used as the one-way transmission means,
What is necessary is just to provide a structure equivalent to the chain which can be engaged with this one-way sprocket as the above-mentioned engaging part in the above-mentioned bar-like member, and to make a part which does not have such a structure into the above-mentioned non-engaging part.

According to this structure, when the vehicle is moved backward by another power, the one-way transmission means and the engagement portion are naturally disengaged and disengaged unless the pedal is forcibly depressed. Section, the vehicle can be retracted. (2) In the above (1), the pedal includes first and second pedals which can be depressed alternately left and right, and the reciprocating motion transmitting means is connected to the first and second pedals respectively. And second reciprocating motion transmitting means,
And each of the second reciprocating motion transmitting means has the above-mentioned engaging portion and the non-engaging portion, and the one-way transmitting means receives force transmission separately from the first and second reciprocating motion transmitting means. A first and a second one-way transmission means;
Both of the one-way transmission means are connected to the wheel shaft of the wheel.

It is desirable that two pedals be provided so that they can be depressed alternately left and right as described above. However, it is not always necessary to provide two pedals, and a pedal provided with only one pedal is within the scope of the present invention. is there. (3) In the above (2), further comprising a pedal restricting member for restricting the reciprocating movement of the first and second pedals to each other, so that when the first pedal is depressed, the depression of the second pedal is prohibited. When the second pedal is depressed, the first pedal is prohibited from being depressed. (4) In the above (3), various concrete configurations of the pedal restricting member are conceivable. One example is one end connected to the first pedal or the first reciprocating motion transmitting means and the other end. A first arm rotatably connected to a predetermined shaft; and a second arm rotatably connected at one end to a second pedal or a second reciprocating motion transmitting means and the other end rotatably to the predetermined shaft. And an angle restricting portion that makes the first and second arms freely foldable and restricts the opening angle of the first and second arms to approximately 180 degrees or less. (5) In the above (4), when the first or second pedal is depressed, the first and second arms are in the fully open position, and the engaging portion of the first or second reciprocating motion transmitting means is in the first or second position. By engaging with the second one-way transmission means,
When the first and second pedals are not depressed, the first and second arms are in the folded position, and the engaging portions of the first and second reciprocating motion transmitting means are provided. Does not engage with the first and second one-way transmission means, thereby enabling the human-powered traveling vehicle to retreat.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are a side view, a plan view, a front view, and a rear view of an infant pedal wheel to which a drive mechanism according to an embodiment of the present invention is applied, respectively. FIG. For the sake of convenience, all the drawings are drawn as see-through views of the internal drive mechanism.

This stepping wheel basically has a base frame 1 made of a structure sufficiently strong against the weight of the saw, and the base frame 1 has two front wheels 2, 3, and 2 This is a four-wheeled vehicle in which the rear wheels 4, 5 are rotatably mounted.

As shown in FIGS. 2 and 3, the front wheels 2, 3 are rotatably attached to both ends of a single horizontal wheel shaft 6, and the center of the wheel shaft 6 is The base frame 1 is fixedly supported by a vertical support rod 7 rotatably supported in the direction of arrow A (FIG. 2). Further, as shown in FIG. 1, a handle 9 is fixed to an upper end of a handle shaft 8 rotatably mounted within a predetermined range with respect to the base frame 1 in the direction of arrow B (FIG. 1). And an arm 11 extending in the horizontal direction from the support rod 7 are engaged with each other. With this configuration, it is possible to rotate the front wheels 2 and 3 in the direction of arrow A within a predetermined range according to the turning operation of the handle 9 in the direction of arrow B.

The rear wheels 4, 5 are fixedly connected to one ends of separate wheel shafts 12, 13 rotatably mounted on the base frame 1, respectively, as shown in FIGS. I have. Then, the rear wheels 4 and 5 are rotationally driven according to the driving force transmitted to the wheel shafts 12 and 13 via a driving mechanism described in detail below.

Further, a seat 14, which is a driver's seat, is placed on the base frame 1, and an operator such as an infant (saw wheelman) sits on the seat 14 and operates the handle 9. While the left and right pedals 15 and 16 are depressed alternately, the vehicle can move forward. The entire outside of the stepping wheel except for the seat 14 is covered with a vehicle body cover 17.

The drive mechanism according to one embodiment of the present invention is applied to a pedal wheel having the above basic vehicle body structure. This drive mechanism converts the reciprocating motion into a rotational motion by the operator (saw hand) alternately depressing the left and right pedals 15 and 16 substantially forward (in the direction indicated by the arrow C), and converts the reciprocating motion to the rear wheels 4 and 5. This is a mechanism for transmission, and is described in detail below.

First, as shown in FIGS. 1 and 4, first and second one-way sprockets 21 as one-way transmission means are provided to the wheel shafts 12 and 13 which are fixedly connected to the rear wheels 4 and 5. , 22 are mounted respectively. here,
These one-way sprockets 21 and 22 apply their rotational force to the wheels only when a rotational force in the direction of arrow E (FIG. 1) is applied to the surrounding gears, similarly to those used in ordinary bicycles. The transmission is transmitted to the shafts 12 and 13. In this case, the rotation of the wheel shafts 12 and 13 is further transmitted to the rear wheels 12 and 13, thereby enabling forward driving. Conversely, when a rotational force is applied to the gear portions of the one-way sprockets 21 and 22 in the direction of arrow F (FIG. 1), which is the opposite direction to the direction of arrow E, the gear portions only idle,
The rotational force is not transmitted to the wheel shafts 12 and 13.

As shown in FIGS. 1 and 2, from the front to the rear of the vehicle, first and second rod-like members 23 and 24 as reciprocating motion transmitting means are arranged on the left and right, respectively. Here, each of the bar-shaped members 23 and 24 is provided with left and right guide portions 25 and 26 integrally formed on the base frame 1.
(FIG. 4), each of which is slidable in the front-rear direction (arrows C and D) of the vehicle by being guided by
24a, and front rod portions 23b, 24b connected to the front ends of the rear rod portions 23a, 24a so as to be rotatable in a horizontal plane about shafts 23c, 24c. Left and right pedals 15 and 16 are fixed to the upper surfaces of the front rod portions 23b and 24b in the vicinity of the front ends thereof, and when the pedals 15 and 16 are depressed, the rod members 23 and 24 are depressed.
Can be reciprocated back and forth.

The above-mentioned rear bar portions 23a, 24a
As shown in enlarged form in FIG.
And engagement portions 23d and 24d that can be engaged with the respective gear portions, and non-engagement portions 23e and 24e that avoid engagement with the gear portions. As the rear bar portions 23a and 24a reciprocate back and forth (in the directions of arrows C and D), the gear portions of the one-way sprockets 21 and 22 engage with the engaging portions 23d and 24d.
And a position where the gear portion is disengaged from the engagement portions 23d and 24d (when the gear portion reaches the positions of the non-engagement portions 23e and 24e).

As the specific structure of the engaging portions 23d and 24d, various structures capable of engaging with the gear portions of the one-way sprockets 21 and 22 can be adopted. However, as shown in FIG. It is desirable that a large number of rollers are linearly arranged along the rear bar portions 23a and 24a in substantially the same manner as in the bicycle chain structure described above.

Further, a pedal regulating member 27 for regulating the reciprocating movement of the left and right pedals 15, 16 is connected between the front ends of the left and right rod members 23, 24. As shown in an enlarged manner in FIG. 6, the pedal restricting member 27 has two right and left arms 27a and 27b, and these two arms 27a and 27b are configured to be rotatable around a shaft 27c. , And can be folded freely. The outer ends of the arms 27a and 27b are rotatably connected to the front ends of the rod members 23 and 24, respectively.
Although the two arms 27a and 27b are configured to be freely foldable as described above, their opening angles are restricted so as not to exceed approximately 180 degrees, and from the fully open state shown in FIG. It is configured to be changeable within the range up to the folded state shown in FIG.

Next, the operation of the stepping wheel to which the drive mechanism having the above configuration is applied will be described in detail below. (A) Forward operation by depressing the pedal As described above, since the pedal regulating member 27 that regulates the reciprocating motion of the left and right pedals 15 and 16 is provided,
When the right pedal 16 is depressed, the left pedal 15 is retracted, while when the left pedal 15 is depressed, the right pedal 16 is retracted, so that the left and right pedals 15, 16 can be depressed alternately without fail. become. When the left and right pedals 15, 16 are depressed alternately in this manner, the left and right rod members 23, 24
Also reciprocate alternately in the front-rear direction (along arrow C and D directions).

Then, for example, when the left pedal 15 is depressed, the left bar 23 also moves forward, that is, the rear bar 23a also slides in the arrow C direction. As shown in FIG.
The gear portion is engaged with the engaging portion 23d of the rear bar portion 23a to rotate the gear portion in the direction of arrow E. As a result, the depressing motion of the pedal 15 is transmitted as a rotational motion to the wheel shaft 12 of the rear wheel 4 via the rod-shaped member 23 and the one-way sprocket 21, and the vehicle moves forward.

On the other hand, at this time, the right pedal 16 is pulled back, and accordingly, the right rod-shaped member 24 moves rearward, that is, the rear rod 24a also slides in the direction of arrow D. At this time, even if the gear portion of the one-way sprocket 22 and the engaging portion 24d of the rear bar portion 24a are in the engaged state, only the force for rotating the gear portion in the direction of arrow F acts, so the gear portion idles. It does not prevent the car from moving forward.

Subsequently, when the right pedal 16 is depressed, the pedal 1 is depressed in the same manner as when the left pedal 15 is depressed.
6 is transmitted as a rotational motion to the wheel shaft 13 of the rear wheel 5 via the rod-shaped member 24 and the one-way sprocket 22 to move the vehicle forward. At this time, the retraction movement of the left pedal 15 does not hinder the forward movement of the vehicle.

In this way, the left and right pedals 15, 16
The vehicle can be continuously driven forward simply by alternately stepping on. Moreover, since a unique mechanism that converts the movement of the pedals 15 and 16 into the rotational movement of the wheel shafts 12 and 13 only when the pedals 15 and 16 are depressed is adopted without employing the conventional crank mechanism, Regardless of the position of the pedals 15, 16 at the start, the vehicle can start smoothly. (B) Forward movement due to inertia (inertial running) As described above, while the vehicle is moving forward by alternately depressing the left and right pedals 15, 16, the pedals 15, 1
Even if the reciprocating movement of No. 6 is stopped, its forward movement is maintained by inertia. That is, in that case, the engaging portion 23
Even if d and 24d are engaged with the one-way sprockets 21 and 22, respectively, the engagement is a force that rotates the gears of the one-way sprockets 21 and 22 with respect to the wheel shafts 12 and 13 in the arrow F direction. Therefore, the motion transmission between the wheel shafts 12 and 13 and the pedals 15 and 16 is disconnected. As a result, the vehicle keeps traveling forward due to inertia, and at this time, the pedals 15 and 16 are also prevented from reciprocating freely.
It is possible to enjoy the inertial running while keeping the feet on 5,16. (C) Forward motion by other power Even without stepping on the pedals 15 and 16, other power that is not dependent on own power, such as when another person pushes the car from behind or goes down a hill using its own weight, is used. When you join,
The following operation is obtained.

That is, in particular, the one-way sprocket 21,
By adopting the motor 22, the transmission of the motion from the wheel shafts 12 and 13 to the pedals 15 and 16 is performed similarly to the case of the inertial running described above, even if the other power as described above is applied to the car. Since the wheels are separated, only the wheels rotate, and the reciprocating motion of the pedals 15, 16 is avoided. Therefore,
Running with the feet resting on the pedals 15 and 16 becomes possible, and as a result, the conventional danger of involving the feet in the free movement of the pedals can be completely avoided. (D) Reverse movement by other power One-way sprockets 21 and 22 are simply
3, the rotational motion of the wheel shafts 12, 13 is transmitted to the pedals 15, 16 via the one-way sprockets 21, 22 when the vehicle is to be moved backward by another power. After retreating to some extent, further retreat is impossible.

In this regard, in the present embodiment, as shown in FIG. 5, the one-way sprockets 21 and 22 are formed on the entirety of the rear rod portions 23a and 24a of the rod members 23 and 24.
Instead of providing the engaging portions 23d and 24d, the front portions are non-engaging portions 23e and 24e. By doing so, when the pedals 15 and 16 are depressed, the engaging portions 23d and 24d engage with the one-way sprockets 21 and 22, respectively, but when the pedals 15 and 16 are sufficiently pulled back, the non-engagement Since the joint portions 23e and 24e come to the positions of the one-way sprockets 21 and 22, the engaging portions 23d and 24e
d is disengaged from the one-way sprockets 21 and 22.

Therefore, when the vehicle is gradually moved backward by another power, the one-way sprockets 21, 22 are firstly driven by the reverse rotation of the wheel shafts 21, 22 unless the pedals 15, 16 are depressed by force. Is rotated in the direction of arrow F, and the pedals 15 and 16 are gradually pulled back in accordance with this. As the pedals 15 and 16 are pulled back, the pedal restricting member 27 gradually closes the opening angle from the fully open state shown in FIG. 6A to the folded state shown in FIG. On the way, the non-engaging portions 23e and 24e reach the positions of the one-way sprockets 21 and 22, so that the engagement between the engaging portions 23d and 24d and the one-way sprockets 21 and 22 is naturally released.

In this way, the vehicle can be moved backward by any other power. In addition, at the time of retreat, the rotation of the wheel is not transmitted to the pedals 15 and 16, so that it is possible to prevent the wheel from starting a free reciprocating motion.

As described above, by applying the drive mechanism having a unique configuration according to an embodiment of the present invention to a pedal wheel, there is no "dead point" unlike the conventional crank type. Regardless of the position of the pedals 15 and 16 at the start of the depression, a smooth departure is possible with a light depression.

Further, even if the vehicle is driven forward by another power,
Since only the wheels rotate and the pedals 15 and 16 do not reciprocate freely, it is possible to travel with the feet placed on the pedals 15 and 16, and the foot may be involved in the movement of the pedals 15 and 16. No safe driving becomes possible.

Further, when the vehicle is moved backward, the engagement between the one-way sprockets 21, 22 and the rod-shaped members 23, 24 is naturally released, so that the vehicle can be moved backward as much as possible. <Other Embodiments> Although the embodiment of the present invention has been described in detail above, the present invention is not limited to this embodiment, and various embodiments can be adopted. Some examples are described below. (1) In the above embodiment, a one-way sprocket is used as the one-way transmission means, which is considered to be most desirable, but is not necessarily limited to a sprocket. That is, the one-way transmission means has a configuration in which only the movement in the predetermined one direction transmitted from the reciprocation movement transmission means can be transmitted to the wheel shaft as a rotational movement, and is used as a drive mechanism of a manually driven vehicle. Various things that can withstand can be adopted. (2) In the above embodiment, a rod-shaped member is adopted as the reciprocating motion transmitting means, but it is not necessarily required to be a rod-shaped member.
That is, as the reciprocating motion transmitting means, various modes capable of transmitting the reciprocating motion of the pedal to the one-way transmitting means can be adopted. (3) In the above-described embodiment, a pedal restricting member is provided, and such a configuration is desirable in terms of functionality. However, even if such a pedal restricting member is not necessarily provided, the intended purpose of the present invention is achieved. The goal is achieved.

Even when the pedal restricting member is provided, it is sufficient if the pedal can be alternately depressed by restricting the reciprocating motion of the pedals. It is not necessary. (4) In the above embodiment, the rear wheels are driven. However, the configuration may be such that the front wheels are driven, or all four wheels may be driven.

The man-powered vehicle to which the present invention is applied need not necessarily be four wheels, but may be three wheels or two wheels. (5) Since the above-described embodiment is directed to a four-wheel infant wheelchair as a most suitable example, the drive mechanism is mounted substantially symmetrically for each of the left and right wheels. In the case of an object, a drive mechanism may be attached to only one wheel and driven by one pedal.

In the above-described embodiment, the two wheel shafts 12 and 13 are provided separately from each other. By doing so, the mobility of operation can be improved. However, the present invention is not limited to this. Instead, these two wheel shafts may be configured as one wheel shaft connected to each other.

[0043]

According to the present invention, since there is no "dead center" inevitably present in the crank mechanism, the pedal can be started smoothly with a light stepping, regardless of the position of the pedal at the start of stepping.

Further, when the vehicle is driven forward by another power,
Since only the wheels are rotated, the self-reliant movement of the pedal can be eliminated, so that even with the foot on the pedal, it is possible to travel extremely safely without getting the foot caught in the pedal.

As described above, when the drive mechanism of the present invention is applied to a human-powered vehicle, an exceptional man-powered vehicle excellent in operability and safety can be realized.

[Brief description of the drawings]

FIG. 1 is a side view of an infant pedal wheel to which a drive mechanism according to an embodiment of the present invention has been applied.

FIG. 2 is a plan view of the infant pedal wheel shown in FIG. 1;

FIG. 3 is a front view of the infant footwheel shown in FIG. 1;

FIG. 4 is a rear view of the infant pedal wheel shown in FIG. 1;

FIG. 5 is a rear bar portion 23a, 24 shown in FIGS. 1 and 2;
FIG. 2A is an enlarged view of one-way sprockets 21 and 22.

6 is an enlarged view of the pedal restricting member 27 shown in FIG. 2, wherein (a) is a view showing a fully opened state, and (b) is a view showing a folded state.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base frame 2, 3 front wheel 4, 5 rear wheel 6 wheel axle 12, 13 wheel axle 15, 16 pedal 21, 22 one-way sprocket 23, 24 rod-shaped member 23 a, 24 a rear rod-shaped part 23 b, 24 b front rod-shaped part 25, 26 Guide part 27 Pedal control member 27a, 27b Arm

Claims (7)

[Claims] 1. A driving mechanism for converting a reciprocating motion of a pedal in a human-powered vehicle into a rotational motion of a wheel, wherein the driving mechanism is connected to a wheel shaft of the wheel and controls only a motion in a predetermined direction transmitted from another. A one-way transmission means for transmitting the rotational movement to the wheel axle; and a one-way transmission means coupled to the pedal, wherein a movement at the time of depressing the pedal in the reciprocating movement of the pedal is a movement in the predetermined one direction. And a reciprocating motion transmitting means for transmitting the reciprocating motion. 2. The reciprocating motion transmitting means avoids engagement between the engaging portion engageable with the one-way transmitting means when the pedal is depressed and the one-way transmitting means when the pedal is not depressed. The drive mechanism for a manually driven vehicle according to claim 1, further comprising a non-engaging portion. 3. The pedal comprises first and second pedals which can be depressed alternately left and right, and the reciprocating motion transmitting means is connected to the first and second pedals, respectively. The first and second reciprocating motion transmitting means each include the engaging portion and the non-engaging portion, and the one-way transmitting device includes the first and second reciprocating motion transmitting devices. A first and a second one-way transmission means for separately receiving a force from the two reciprocating motion transmission means, wherein both the first and the second one-way transmission means are connected to a wheel shaft of the wheel. The driving mechanism for a human-powered vehicle according to claim 2, wherein: 4. The first and the second pedals for inhibiting the depression of the second pedal when the first pedal is depressed, and for inhibiting the depression of the first pedal when the second pedal is depressed. The driving mechanism for a manually driven vehicle according to claim 3, further comprising a pedal restricting member that restricts reciprocation of the pedals. 5. An end of said pedal restricting member, said first restricting member being connected to said first restricting member.
And one end is connected to the second pedal or the second reciprocating motion transmitting means, and the other end is connected to the second reciprocating motion transmitting means. A second arm connected to the other end and rotatably connected to the predetermined shaft; the first and second arms being freely foldable with each other; and the opening angle of the first and second arms being substantially reduced. 5. The driving mechanism for a manually driven vehicle according to claim 4, further comprising an angle restricting portion that restricts the angle within 180 degrees. 6. When the first or second pedal is depressed, the first and second arms are in the fully open position, and the engaging portion of the first or second reciprocating motion transmitting means is connected to the first or second arm. Alternatively, by engaging with the second one-way transmission means, the forward driving of the human-powered vehicle becomes possible, and when the first and second pedals are not depressed, the first and second arms are in the folded position. And the engaging portion in the first and second reciprocating motion transmitting means does not engage with the first and second one-way transmitting means.
The driving mechanism for a human-powered vehicle according to claim 5, wherein the human-powered vehicle can be moved backward. 7. The first and second one-way transmission means are both one-way sprockets, and the first and second reciprocating motion transmission means are provided by the first and second pedals from the first and second pedals. A bar-shaped member extending over the second one-way transmission means, wherein the bar-shaped member
The said engagement part which can be engaged with the said one-way sprocket, and the said non-engagement part which avoids engagement with the said one-way sprocket are provided, The Claims 3-6 characterized by the above-mentioned. A drive mechanism for a manually driven vehicle according to any one of the preceding claims.