JP3784397B1 - Walk-driven small vehicle - Google Patents

Abstract

There is provided a new type of walking drive type small vehicle that does not need to straddle when getting on and can be easily used even by a woman wearing a skirt or kimono.
SOLUTION: Traveling wheels 6 and 8 provided on the front and rear of a frame 4, a pair of rollers 10 and 12 rotatably supported on the front and rear of the frame 4, and a pair of rollers 10 and 12 on the front and rear. The endless rotating belt 14 wound around the rotating belt 14 and the orbiting motion of the rotating belt 14 that is orbited by the propulsion force of the occupant walking on the rotating belt 14 are converted into the rotational driving force of the wheels 6. Driving force transmitting means 20 for transmitting the power.
[Selection] Figure 1

Description

  The present invention relates to a walk-driven small vehicle that moves forward by transmitting a propulsive force generated by a passenger walking on a rotating belt to traveling wheels.

  Conventionally, a bicycle is well known as a representative example of a human-powered mobile vehicle that can move while reducing the labor of the user. In recent years, bicycles equipped with electric assist devices have been developed, and the spread of the electric assist device-equipped bicycles is rapidly progressing. This electric auxiliary device compensates for the increased load required when climbing or accelerating with electric power, thereby reducing the pedal depression force, and the convenience of further reducing labor than conventional bicycles There is.

In addition to conventional bicycles, there are also folding bicycles that can be reduced in size so that they can be transported in comparison with normal use in consideration of bringing them into trains and automobiles.
JP 2004-142703 A

  However, when riding a conventional bicycle, there are too many preparatory actions such as “must have to straddle” and “(when there is no auxiliary wheel) a certain speed or more is required”. Therefore, it is not suitable for an application that requires frequent boarding / exiting by moving a very short distance, such as moving for opening and closing windows in a large factory. Furthermore, it is difficult for elderly people to handle, and it is not suitable as a vehicle when wearing skirts or Japanese clothes, especially for women.

  The present invention was devised in view of the circumstances as described above, and its purpose is not to straddle when getting on, and it is a new type of walking drive type that can be easily used even by women wearing skirts and kimonos etc. It is to provide a small vehicle.

  In order to achieve the above object, in the present invention, a walking drive type small vehicle is configured as follows.

That is, in the walking drive type small vehicle according to the first aspect of the present invention, the traveling wheels provided at the front and rear of the frame, the pair of rollers rotatably supported at the front and rear of the frame, and the pair of front and rear rollers The belt is wound around and stretched, and the endless rotating belt is slidably supported by a tread provided on the frame, and is circulated by a propulsion force generated by a passenger walking on the rotating belt. Driving force transmission means for converting the rotational movement of the rotating belt into rotational driving force of the wheel and transmitting the rotating belt, and a pair of left and right driving wheels connected to each other by an axle. Is characterized in that a differential mechanism for distributing the driving force to the left and right driving wheels is incorporated .

In the walking drive type small vehicle of the invention according to claim 2, a traveling wheel provided at the front and rear of the frame, a pair of rollers rotatably supported at the front and rear of the frame, and the pair of front and rear rollers The endless rotating belt that is wound and stretched and is slidably supported on a tread provided on the frame, and the circular movement is performed by a propulsion force caused by the walking of an occupant on the rotating belt. Driving force transmission means for converting the rotational movement of the rotating belt into the rotational driving force of the wheel and transmitting the same, dividing the frame into a front side frame and a rear side frame at substantially the center in the front-rear direction; The front-side frame and the rear-side frame are foldably connected so that the lower surface faces each other, and the center portion of the lower belt faces the upper belt to either the front-side frame or the rear-side frame. Press It is characterized by the provision of a tensioner to be close to each other.

In the walking drive type small vehicle of the invention according to claim 3, the traveling wheel is provided with at least three or more wheels, and the traveling direction of the wheel provided at the front portion or the rear portion of the frame can be changed. It is characterized in that a simple steering mechanism is assembled .

According to the walking drive type small vehicle of the present invention having the above-described configuration, the rotating motion of the rotating belt disposed on the frame via the roller is converted to the rotational driving force by the driving force transmitting means and transmitted. Thus, the traveling wheel can be miniaturized as much as possible, and the height of the frame can be as close as possible to the ground. For this reason, the occupant can easily get on and off the rotating belt as the boarding position. Also, when traveling, the driving force (rotational torque) is distributed and transmitted by the differential mechanism to the pair of left and right wheels connected by the axle, so it is only necessary to walk on the rotating belt. It can be used easily.

The frame is divided into a front side frame and a rear side frame at approximately the center in the front-rear direction, and is connected so as to be bent. The lower belt of the rotating belt is connected to either the front side frame or the rear side frame. It can be made foldable by providing a tensioner that pushes the center part of the part toward the upper belt part and closes it, and if the front wheel or the rear wheel is grounded to the ground at the time of folding, it can be handled like a caster bag It is convenient to move when not in use.

If the number of traveling wheels is three or more, the walking drive type small vehicle can be kept independent at all times, and there is no need to support it by using a stand or the like when stopping. For this reason, in the case of frequent boarding / exiting by repeatedly moving a very short distance, the boarding / alighting operation can be performed easily and the complexity thereof can be reduced, which is extremely useful. Further, the vehicle can be run simply by walking on the rotating belt, and can be easily used without having to learn a sense of balance like a bicycle when driving. For this reason, even an elderly person can use it easily. In particular, women can easily ride even if they are wearing skirts or kimonos, which is very convenient. Furthermore, it can be used as a substitute for a moving sidewalk, and can also be used as a moving means in a narrow passage or office building where a moving sidewalk cannot be installed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view showing a schematic configuration of a walking drive type small vehicle according to the present invention, partially broken away.

  First, a schematic configuration of the walking drive type small vehicle 2 of the present invention will be described based on FIG. As shown in the figure, this walking and moving small vehicle 2 has a main frame 4 as a skeleton and is supported from the ground by four front and rear traveling wheels 6 and 8. The main frame 4 is rotatably supported by a pair of front rollers 10 at its front end and a pair of rear rollers 12 at its rear end. An endless rotating belt 14 is wound around and stretched between the front and rear rollers 10 and 12, and an occupant's riding portion is formed on the upper surface of the main frame 4 so as to face the lower surface of the upper belt portion 14a. A tread plate 16 is provided. In order to support the lower surface of the upper belt portion 14a in a slidable manner, the tread plate 16 supports a rotating belt 14 by laying a sliding pad 18 that has been subjected to a smooth surface treatment.

  The front roller 10 and the front traveling wheel 6 are connected via a driving force transmission means 20, and when the rotating belt 14 is revolved by a propulsive force generated by a passenger walking on the rotating belt 14, The circular motion of the rotating belt 14 is converted to a rotational driving force and transmitted to the front traveling wheel 6.

  The driving force transmission means 20 integrally rotates with a large-diameter driving gear 22 that rotates integrally with the front roller 10, a small-diameter driven gear 24 that meshes with the driving gear 22, and the driven gear 24. The driving side sprocket 26, the driven side sprocket 28 that rotates integrally with the front wheel 6, and a power transmission belt 30 wound around these sprockets 26, 28.

  That is, in the walking drive type small vehicle 2, when an occupant on the rotating belt 14 starts walking forward, a thrust A is generated in the direction of the arrow in the occupant's body. At this time, most of the thrust acts as a reaction force B on the rotating belt 14. The reaction force B is transmitted to the rotating belt 14 as it is, and the rotating belt 14 makes a circular motion, whereby the rotational torque is transmitted to the front roller 10. The rotational torque of the front roller 10 is transmitted from the drive side gear 22 installed coaxially to the driven gear 24 with its rotational direction reversed, and the rotational torque transmitted to the driven side gear 24 is sprockets 26 and 28 and a power transmission belt. 30 and transmitted to the front wheel 6 as a forward rotational driving force. That is, the reaction force of the walking thrust generated on the rotating belt 14 quickly propagates to the ground and advances the occupant's body relative to the ground.

  Further, the occupant's body tries to move forward on the main frame 4 by the thrust A due to the above-mentioned walking. The handle 32 to be hung is erected. That is, by pushing the handle 32 by hand, the thrust C is applied to the handle. The reaction force C (not shown) of the thrust C is eventually transmitted to the rotating belt 14 through the occupant's body. Thus, the thrust A that advances the occupant and the walking drive type small vehicle 2 generates reaction forces B and C against the rotating belt 14 and is transmitted to the mechanism of the vehicle body and becomes a reaction force to the ground. It is a mechanism that proceeds forward.

  Here, from the viewpoint of the conservation of momentum, when a person is walking normally, it is only necessary to generate a thrust A for accelerating its own weight. In the drive type small vehicle 2, the occupant must also generate a thrust force for accelerating the vehicle body weight. This is equivalent to a situation where a person is pushing a shopping cart or the like, and the movement is more burdensome than a person walking alone, and labor saving is not achieved.

  Therefore, in the present embodiment, a mechanism for adding an electric assisting force as necessary is added so that a load more than a person walking alone is not applied. For example, if an appropriate driving torque is generated by connecting a motor to the power shaft of the front traveling wheel 6 as a driving wheel in FIG. Become. In other words, when such a configuration is adopted, the configuration is such that the occupant simply walks on the rotating belt 14 of the walking drive type small vehicle 2 that automatically precedes with electric assistance. In other words, it is no different from the labor that people normally walk.

  At this time, the “appropriate driving torque” assisted by the motor is controlled so that the distance between the passenger and the handle 32 is kept within a certain range. Therefore, whether to install a distance measuring sensor between the handle 32 and the occupant, or whether to install a thrust sensor that detects how much force is pushed (pulled) from the occupant to the handle 32 Alternatively, it is necessary to keep the distance constant by installing a torque sensor on the transmission shaft or installing a tension sensor on the power transmission belt 30.

  On the other hand, it is also conceivable to increase the rotational speed by increasing the motor torque of the power shaft. In this case, the speed of the walking drive type small vehicle 2 is increased, but the occupant on the rotating belt 14 only walks with speed accordingly. Here, in order to reduce this fast walking, a transmission mechanism may be incorporated in the power transmission system. This transmission mechanism may be a gear type or a continuously variable transmission pulley type.

  In other words, if the gear ratio (1: 1) is set so that the walking-driven small vehicle 2 moves forward 1 m when the upper surface of the rotating belt 14 makes a reciprocating motion 1 m backward, one point on the upper surface of the rotating belt 14. One point on the ground projected vertically from the top will continue to coincide even if the walk-driven small vehicle moves. That is, if the occupant moves 1 m relative to the rotating belt 14, the handle also moves 1 m and the walking drive type small vehicle 2 moves 1 m as a whole.

  On the other hand, if a speed change mechanism is incorporated in the driving force transmission system of the vehicle body and the upper surface of the rotating belt 14 rotates 1m backward, the walk-driven small vehicle moves forward 2m (gear ratio 1: 2). If the occupant advances relative to the upper surface of the rotating belt 14 by 1 m and keeps the distance from the handle 32 constant, the walking drive type small vehicle 2 advances by 2 m due to the gear ratio. However, in actuality, when the thrust is decomposed, the occupant travels on the rotating belt 14 relatively 1 m, and further the force that the occupant himself and the walk-driven small vehicle 2 advance 2 m with respect to the ground. And is required. Therefore, with regard to the force for advancing this occupant and the walking drive type small vehicle 2 by 2 m, if this is assisted by electric power, the occupant only advances 1 m on the rotating belt 14 and 2 m against the ground You can go forward. However, due to the law of inertia, it is actually 2m ahead of the usual case of traveling 1m above the ground, so it takes twice as much weight on the hind leg to kick out. This is close to the feeling of the first step on a moving walkway.

  Next, another labor saving will be described. That is, one of the reasons that a bicycle is a labor-saving vehicle is that it uses inertial force. In other words, if a certain level of speed is applied on the flat ground, it is possible to move forward with inertia force except for a decrease in speed due to various running resistances without having to pedal.

  If this is also applied to the walking drive type small vehicle 2, for example, a mechanism for transmitting torque in one direction between the front wheel shaft and the front wheel and rotating in the reverse direction may be attached. This mechanism is called freewheeling in bicycles. With this mechanism, if a certain speed is obtained by walking driving, the inertial force further advances by inertia. This is similar to wearing roller skates. If the speed is increased by skating to some extent, then roller skating also proceeds with inertia.

  However, in the case of adopting this configuration, a brake mechanism must be provided as a safety means for stopping.

  The above is the description of the basic configuration of the walking drive type small vehicle according to the present invention. The configuration example of each part will be described below in more detail with reference to examples.

Example 1
As shown in FIG. 2, the walking drive type small vehicle 2 has a main frame 4 as a skeleton and is supported from the ground by front and rear wheels 6 and 8.
The main frame 4 includes a pair of left and right side frames 402, and a front cross frame 404 and a center cross frame 406 that connect the both side frames 402 and 402 in the width direction at the front end and the center, respectively. .

  A pair of support stays 408 are symmetrically installed in parallel on the center cross frame 406 at predetermined intervals on both sides of the vehicle width center line along the vehicle length direction. The support stay 408 extends forward to the vicinity of the front cross frame 404. A pair of hollow axle tubes 410 are provided on the front portion of each support stay 408 on the outer side in the vehicle width direction so as to connect the side frames 402.

  Drive axles 202 are rotatably supported via bearings in both axle pipes 410, and these drive axles 202 are connected via a differential gear 204 that forms a differential mechanism at the center in the vehicle width direction. It is connected. The differential gear 204 has a housing 204a rotatably supported by a cylindrical support cover 416 provided on a right support stay 408 shown in the figure via a bearing. That is, the driving force (rotational torque) is distributed and transmitted by the differential gear 204 to the front wheels as a pair of left and right driving wheels connected by the driving axle 202. Note that the configuration and function of the differential gear 204 are well-known existing techniques, and therefore detailed description thereof is omitted here.

  Both drive axles 202 protrude outward from the side frame 402 and are connected to a wheel rotation shaft 6 a integrated with the front wheel 6 via a universal joint 206. The wheel rotation shaft 6a is rotatably supported via a king pin (not shown) by an axle support arm 420 whose bearing portion 6b extends laterally from the main frame 402.

  Further, the bearing portions 6b of both the left and right wheels are connected by a tie rod 422, and a pin 424 provided on the tie rod 422 is moved left and right by turning a steering shaft 32a installed at the center left and right by a handle (not shown) at the upper end. As a result, the front wheel 6 can be directed (steered). Various existing steering mechanism structures such as a rack and pinion type can be applied to the handle portion, or the steering mechanism may be assembled on the rear wheel side.

  On the other hand, a front roller 10 is rotatably provided on the outer periphery of the axle tube 410 via a bearing. Further, support shafts 428 are provided at the rear end portions of the both side frames 402 and 402, and the rear roller 12 is rotatably supported on the outer periphery of the support shaft 428 via a bearing. . An endless rotating belt 14 wound around these front and rear rollers 10 and 12 is installed in a tensioned state.

Here, these are connected between the front roller 10 and the driving axle 202 described above, and the circular motion of the rotating belt 14 wound around the front and rear rollers 10 and 12 is converted into the rotational driving force of the front wheel 6. In other words, the driving force transmitting means 20 is provided with the differential gear 204, a spur gear 209 integrally attached to the housing 204a of the differential gear 204, and the differential gear. An intermediate rotary shaft 208 spanned between support stays 408 and 408 on the rear side of the gear 204 and rotatably supported via a bearing, and fixed on the intermediate rotary shaft 208 to the spur gear 209. The meshing spur gear 210, the driven sprocket 212 fixed to the intermediate rotation shaft 208, and the front roller 10 It comprises a drive side sprocket 214 provided at the side end, and a power transmission belt 216 wound around the driven side and drive side sprockets 212 and 214.

  The intermediate rotating shaft 208 is connected to an auxiliary electric motor 220 that is an electric drive auxiliary device via a coupling 218 that functions as a one-way clutch, and a battery 222 is also mounted as a driving source of the auxiliary electric motor. Yes. Further, a control unit (not shown) for controlling the magnitude of rotational torque applied as auxiliary force to the intermediate rotating shaft 208 by the auxiliary electric motor 220 is also provided. Either a distance measurement sensor installed between the two or a thrust sensor that is provided on the handle 32 and detects how much force is being pushed (pulled) from the occupant, or a power transmission system The auxiliary electric motor is driven and controlled in accordance with a detection signal from a torque sensor installed on the rotating shaft, a tension sensor for detecting the tension of the power transmission belt 216, and the like.

  In the walking drive type small vehicle 2 configured as described above, if the occupant starts walking forward, the reaction force that the occupant starts to move forward is transmitted to the rotating belt 14 and circulates. Then, the rotational motion of the rotating belt 14 is transmitted to the front roller 10 to rotate it. The rotation of the front roller 10 is sequentially transmitted from a driving side sprocket 214 provided integrally therewith to a driven side sprocket 212, an intermediate rotating shaft 208, and spur gears 210 and 209 via a power transmission belt 216. The gear 204 is rotated together with the housing 204a. The differential gear 204 distributes and transmits an appropriate rotational torque to the left and right drive axles 202 by the revolution and rotation of the internal gear group.

  Here, when torque assistance is required, an auxiliary force is applied from the auxiliary electric motor 220 via the coupling 218. Electric power necessary for driving the auxiliary electric motor 220 is supplied by the battery 222.

  The torque is transmitted to the wheel rotating shaft 6a through the free wheel 202a having a one-way clutch function that causes the drive axle 202 to which the torque is transmitted to idle in the reverse direction. Since the universal joint 206 is provided between the wheel rotation shaft 6a and the drive axle 202, torque transmission from the drive axle 202 to the wheel rotation shaft 6a is smooth regardless of the steering angle of the front traveling wheel 6. Torque transmission to the front traveling wheel 6 is achieved.

  The feature of this embodiment is that there is no structure that divides the main body into left and right, and therefore the rotating belt 14 can be constituted by one piece without being divided in the width direction. For this reason, when actually driving, there is a large degree of freedom with respect to the foot placement. For example, even if the left foot kicks the right from the center of the belt roller 8, it can be moved smoothly.

Example 2
In the walking drive type small vehicle 2A of the second embodiment shown in FIG. 3, the structure is simplified to reduce the cost.
As shown in the figure, the main frame 4 constituting the skeleton of the walking drive type small vehicle 2A has four vertical frames 450 arranged in the width direction, and a cross frame 452 connecting these in the width direction at the front end portion. The main frame 4 is supported from the ground by providing auxiliary wheels 454 at front and rear ends of a pair of left and right outer vertical frames 450a. These auxiliary wheels 454 are pin-coupled to a lower portion of a support arm 455 extending outward from the outer vertical frame 450a, and the rotational surface of the auxiliary wheel 454 is given a degree of freedom that allows rotation of 360 ° around the pin.

  The inner vertical frames 450b are arranged to face each other in parallel with an interval narrower than the stride, and between the inner vertical frames 450b and 450b on the rear side, the inner vertical frames 450b and 450b rotate via bearings. A driving traveling wheel 6A supported freely is provided.

  A steering wheel support stay 456 is provided at the center of the cross frame 452 so as to protrude forward, and a steering wheel 460 is provided on the support stay 456 with a steering shaft 458 rotatably supported. Although not shown, the steering shaft 458 extends upward, and a handle extending left and right is attached to the upper end thereof.

  Between the inner vertical frame 450b and the outer vertical frame 450a, which are disposed in a pair symmetrically to the left and right of the vehicle width center line, the front end is spanned between the inner and outer vertical frames 450a and 450b. A support shaft 462 is fixedly provided, and a front roller 468 is provided on the support shaft 462 via a bearing. A rotating shaft 464 is provided on the rear end side between the two inner vertical frames 450b and 450b via a bearing so as to be rotatable. A rear roller 470 is rotatably fitted and attached to both ends of the rotation shaft 464 via a free wheel 466, and a rotation shaft 470a integrally protruding from the outer end surface of the rear roller 470 is formed on the outer vertical frame 450a. It is supported rotatably via a bearing.

  The rotary belt 14A is stretched around the front and rear rollers 468 and 470 in a tensioned state along the vehicle length direction. Further, a tread plate 16A is provided at the upper end portions of the inner and outer vertical frames 450a and 450b so as to face the lower surface of the upper portion of the rotating belt 14A, and a sliding pad 18A is provided on the upper surface of the tread plate 16A.

  Here, between the rotating shaft 464 and the rotating shaft 6Aa provided integrally with the driving traveling wheel 6A, the rotating belt is circulated by a propulsion force caused by walking of an occupant on the rotating belt 14A. A driving force transmitting means 20 is provided for converting the circular motion of 14A into a rotational driving force of the driving traveling wheel 6A and transmitting it. In the illustrated example, the driving force transmitting means 20 includes the rotating shaft 464 and the rotating shaft 6Aa. And a pair of spur gears 209A and 210A meshing with each other.

  An auxiliary electric motor 220 is connected to a rotating shaft 6Aa integrated with the traveling wheel 6A via a coupling 218 that functions as a one-way clutch, and a battery 222 is also mounted as a drive source of the auxiliary electric motor. .

  In the walking drive type small vehicle 2A configured as described above, when the occupant starts walking forward, the reaction force kicked out by the occupant to advance forward is transmitted to the rotating belt 14A, and the rear roller 470 Tell the torque. The rear roller 470 does not transmit reverse torque via the free wheel 466. On the other hand, another free wheel restricts the rotation to only one direction so that the occupant does not slip thereon and the rotating belt 14 does not rotate in the reverse direction. The rotating shaft 464 to which the torque is transmitted transmits the rotating torque to the rotating shaft 6Aa of the driving traveling wheel 6A via the spur gears 210A and 209A. Necessary auxiliary force is applied to the rotating shaft 6Aa from the auxiliary electric motor 220 via the coupling 218.

  The front roller 468 and the rear roller 470 play a role only to support the rotating belt 14A, and the weight of the occupant is supported by the tread plate 16A. The main frame 4 is supported by front and rear auxiliary wheels 454. These auxiliary wheels 454 only serve to support the load in the vertical direction. When the traveling direction of the vehicle 2A changes according to the steering of the front steering traveling wheel 460, the traveling surface of the rotating surface follows the traveling direction. The angle changes, and the orientation of the walking drive type small vehicle 2 </ b> A can be freely performed by operating the steering traveling wheel 460.

  In particular, in the walking drive type small vehicle 2A of the second embodiment, the differential traveling gear and the universal joint are not required by using one steering traveling wheel 460 and one driving traveling wheel 6A. It has a simple and low-cost configuration.

《Other additional configuration》
4 and 5 are schematic views showing an example in which the walking drive type small vehicle 2 is configured to be foldable. FIG. 4 shows a state in use, and FIG. 5 shows a folded state. As shown in the figure, the main frame 4 is divided into a front frame 42 and a rear frame 44 at the approximate center in the front-rear direction so that the lower frame faces the front frame 42 and the rear frame 44. The pin 46 is connected so as to be foldable, and the central portion of the lower belt portion of the rotating belt 14 is pressed toward the upper belt portion and brought into close proximity to either the front frame 42 or the rear frame 44. A tensioner (tension roller) 48 is provided.

  Further, the steering shaft 32a of the handle 32 is divided into two at the portion directly above the main frame 4 and is coupled by a pin 50 so that it can be bent, and the steering shaft 32a is held in a straight state at the divided portion to bend the steering shaft 32a. The sleeve 52 to be regulated is slidably provided so that it can be tilted as necessary. At the time of folding, if the handle 32 is used as a handle and the front wheel or the rear wheel is grounded to the ground, it can be handled like a caster bag, which is convenient for movement when not in use.

  Further, as shown in FIG. 6, by attaching a windshield 54 to the handle 32 portion, it is possible to prevent the feet from getting wet due to rain and the like by avoiding wind and rain.

It is a side view which shows roughly the basic composition of the walk drive type small vehicle concerning the present invention. It is a top view of Example 1 which shows the more concrete structure of the walk drive type small vehicle concerning this invention. It is a top view of Example 2 which shows the more concrete structure of the walk drive type small vehicle which concerns on this invention. It is a schematic side view which shows the example which comprised the walk drive type small vehicle so that folding was possible, and the state at the time of use is shown. It is a schematic side view which shows the example which comprised the walk drive type small vehicle so that folding was possible, and the state at the time of folding is shown. It is a schematic perspective view of the walk drive type small vehicle which shows the state which attached the windshield.

Explanation of symbols

2 Walking-driven small vehicle 4 Main frame 6 Driving wheel (drive wheel)
8 Traveling Wheel 10 Front Roller 12 Rear Roller 14 Rotating Belt 16 Tread Plate 18 Sliding Plate 20 Power Transmission Means 32 Handle (Steering Mechanism)
32a Steering shaft (steering mechanism)
42 Front side frame 44 Rear side frame 46 Pin 48 Tensioner 202 Drive axle 202a Free wheel 204 Differential gear (differential mechanism)
209, 209A, 210, 210A Spur gear 220 Auxiliary drive motor (electric drive assist device)
422 Tie rod (steering mechanism)

Claims (3)

Traveling wheels provided before and after the frame;
A pair of rollers rotatably supported on the front and rear of the frame;
An endless rotating belt that is wound around and stretched between the pair of front and rear rollers and is slidably supported on a tread provided on the frame;
A driving force transmitting means for transmitting the rotational motion of the rotating belt, which is revolved by the propulsive force generated by the walking of an occupant placed on the rotating belt, into the rotational driving force of the wheels;
Equipped with a,
A walking drive type compact having a pair of left and right drive wheels connected to each other by an axle, and a differential mechanism for distributing drive force to the left and right drive wheels is incorporated in the axle. vehicle. Traveling wheels provided before and after the frame;
A pair of rollers rotatably supported on the front and rear of the frame;
An endless rotating belt that is wound around and stretched between the pair of front and rear rollers and is slidably supported on a tread provided on the frame;
A driving force transmitting means for transmitting the rotational motion of the rotating belt, which is revolved by the propulsive force generated by the walking of an occupant placed on the rotating belt, into the rotational driving force of the wheels;
With
The frame is divided into a front-side frame and a rear-side frame at a substantially center in the front-rear direction, and the front-side frame and the rear-side frame are foldably connected so that the lower surface faces each other. A walking drive type small vehicle characterized in that a tensioner is provided on either one of the frame and the rear side frame to press and bring the central portion of the lower belt toward the upper belt . The steering wheel is provided with at least three or more wheels, and a steering mechanism capable of rolling in the traveling direction is assembled to any one of the wheels provided at the front part or the rear part of the frame. walking drive type small vehicle according to any one of claim 1 or 2.

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