JP3245054U - vehicle - Google Patents

Abstract

To provide a vehicle that can prevent the vehicle body from moving backward in the direction of going down a slope when the user is stopped in the direction of moving forward and going up the slope. [Solution] A front wheel 12 and a rear wheel 13; a vehicle body 11 rotatably supporting the front wheels 12 and the rear wheels 13; a saddle 15 provided on the vehicle body 11 on which a user P1 sits; A self-walking car 10 that is operated by a user P1 sitting on a saddle 15 and has a handle 14 that adjusts the direction of the front wheels 12, and is provided with a reverse running prevention mechanism 16 that determines the rotation direction of the front wheels 12, The reverse running prevention mechanism 16 has a first state in which the front wheel 12 is allowed to rotate in the first direction and is prevented from rotating in the second direction, and a first state in which the front wheel 12 is allowed to rotate in the first direction, and , and a second state in which rotation in the second direction is allowed. [Selection diagram] Figure 1

Description

The present disclosure relates to a vehicle that does not include pedals, chains, or a driving force source, and allows a user to move the vehicle body by walking with his/her own feet.

An example of a vehicle that does not include pedals, chains, or a driving force source and allows a user to move the vehicle by walking with his or her own feet is described in Patent Document 1. The vehicle described in Patent Document 1 is a vehicle in which front wheels, rear wheels, a handle, and a saddle are attached to a body frame. Furthermore, the vehicle described in Patent Document 1 has a front frame, a rear frame, an upper frame, and a lower frame connected to each other by tightening pins so as to form a substantially rectangular shape under normal conditions. It is constructed so that it can be bent in the direction in which the frames approach each other, and one of the connecting parts is provided with a locking means.

Utility model registration No. 3140848

The inventor of the present invention recognized a problem that, in the vehicle described in Patent Document 1, if the user is parked in the direction of moving forward and climbing up a slope, there is a possibility that the vehicle will go down the slope.

An object of the present disclosure is to provide a vehicle that can prevent the vehicle body from moving backward in the direction of going down a slope when the vehicle body is stopped with the user moving forward and going up the slope.

The present embodiment includes a front wheel and a rear wheel, a vehicle body rotatably supporting the front wheels and the rear wheels, a saddle provided on the vehicle body for a user to sit on, and a saddle provided on the vehicle body for a user to sit on the saddle. The vehicle has a handle that is operated by a user and that adjusts the direction of the front wheels, and the vehicle is provided with a reverse running prevention mechanism that determines the rotation direction of the front wheels, and the reverse running prevention mechanism is configured such that the front wheels are a first state in which the front wheel is allowed to rotate in a first direction and is prevented from rotating in a second direction opposite to the first direction; the front wheel rotates in the first direction; The vehicle is configured to be able to switch between a second state that allows rotation in a second direction.

According to the present disclosure, when the user parks the vehicle in the direction of moving forward and climbing up the slope, it is possible to prevent the vehicle from moving backward in the direction of going down the slope.

FIG. 1 is a side view of a self-walking car that is an embodiment of a vehicle. FIG. 3 is a rear view of the self-walking car. (A) and (B) are plan views of a coupling mechanism provided in a self-walking car. (A) is a plan view of the self-walking car in a state where it is folded up to a halfway position, and (B) is a plan view of the self-walking car in a state where it is folded. (A) is a side view showing a first state of the reverse running prevention mechanism provided in the self-walking car, and (B) is a side view showing the second state of the reverse running prevention mechanism.

(overview)
Lately, when I've been walking around town, I've noticed that I don't see many elderly people. When I look at the way elderly people I sometimes see walk, I find that it is painful to walk with a cane, or that those who walk without a cane are pushing a four-wheeled shopping cart. . In any case, there is no doubt that the person's weight is on their feet. Therefore, in order to reduce the burden on their legs, they walk with the aid of a cane or push a four-wheeled vehicle. The reaction then puts a strain on your arms, and if your shoulders become stiff, you may be unable to use your hands, and you may not even be able to go out on the town.

That's why I thought of a bicycle. When riding a bicycle, your weight does not rest on your legs. Therefore, it does not put any strain on your feet. However, in order to move the bicycle forward, you must press the pedals. However, as users get older, pedaling requires a certain amount of speed for the stability of the bicycle, but elderly people fear speed. That's why I came up with the idea of a bicycle that can be advanced by walking on its own without stepping on the pedals. Of course, the user is sitting on the saddle.

This way, the burden of your own weight is not placed on your feet at all, and both feet are always in contact with the ground. The user uses his or her feet to move the bicycle forward. Therefore, the user has no fear of the bicycle falling over. Therefore, users can go out and walk whenever they want with peace of mind, and enjoy their future lives. Furthermore, since users walk on their own, pedals, chains, and other driving devices are not required.

The saddle is set low to allow the user to get on and off the bicycle. In addition, the overall structure is designed to be small in consideration of the fact that the bicycle will be used for riding to supermarkets and the like.

(Concrete example)
A bicycle, which is an example of a vehicle, is illustrated with reference to the drawings. The bicycle of this embodiment does not include pedals and chains, and also does not include a driving force source for driving the wheels. The bicycle of this embodiment has a structure in which the user straddles the saddle and moves the bicycle body by walking with his or her own feet. The self-walking car, which is an example of the bicycle of this embodiment, can also be called a kick bike or a balance bike (registered trademark). Hereinafter, for convenience, the bicycle shown in FIG. 1 will be referred to as a self-walking car 10. The self-walking car 10 includes a vehicle body 11, front wheels 12, rear wheels 13, a handle 14, a saddle 15, and a reverse running prevention mechanism 16.

The vehicle body 11 includes parts such as a head tube 17, a front suspension 18, a down tube 19, an extension tube 20, a rear tube 21, a seat tube 22, a seat stay 23, a car stay 24, and the like. These parts are straight pipes. As the material of these parts, metal materials, fiber-reinforced synthetic resin materials, etc. can be used as appropriate. Metal-based materials include, for example, steel, aluminum alloy, titanium, magnesium, and the like. Fiber-reinforced synthetic resin materials include fiber-reinforced plastics, carbon fiber-reinforced plastics, and the like. The handle 14 is provided at the upper end of the head tube 17. The handle 14 is a rod-shaped element that is held and operated by the user P1 with the hand 51, and the handle 14 is made of a metal material or a fiber-reinforced synthetic resin material.

The head tube 17 is connected to approximately the center of the handle 14 in the longitudinal direction. The head tube 17 extends in the height direction. The handle 14 is configured to be movable in the height direction relative to the head tube 17. For example, the upper end of the head tube 17 is configured into a cylindrical shape, and a portion of the handle 14 is inserted into the head tube 17. Further, a handle height adjustment mechanism 25 is provided for positioning and fixing the handle 14 with respect to the head tube 17 in the height direction. The handle height adjustment mechanism 25 includes a positioning screw and the like. The user P1 adjusts and fixes the position of the handle 14 in the height direction by loosening the positioning screw, moving the handle 14 in the height direction, and tightening the upper positioning screw. Can be done.

The head tube 17 is rotatably supported by a down tube 19. The head tube 17 is configured not to move in the height direction relative to the down tube 19. Further, a front suspension 18 is connected to the lower end of the head tube 17. The front suspension 18 is a set of two elements, and the front wheel 12 is rotatably supported by the front suspension 18. The front wheel 12 is composed of a hub, spokes, rim, and tire. The outer peripheral surface of the tire of the front wheel 12 is grounded on the road surface A1.

The down tube 19 is arranged outside the front wheel 12 in the radial direction of the front wheel 12. When the vehicle body 11 is viewed from the side, the down tube 19 has an arc shape. The first end of the down tube 19 supports the head tube 17 so that it can be operated within a predetermined angular range. An extension tube 20 is provided behind the down tube 19 in the longitudinal direction of the vehicle body 11. The extension tube 20 is connected to the second end of the down tube 19 via a coupling mechanism 26.

The coupling mechanism 26 has a configuration that allows the vehicle body 11 to be switched between a folded state and an unfolded state, as shown in FIGS. 4(A) and 4(B). The coupling mechanism 26 includes a guide groove 27 provided in the extension tube 20, a connecting piece 28 connected to the second end 19A of the down tube 19, a core rod 29 provided in the connecting piece 28, and a reinforcing pipe. 30. The connecting piece 28 is operably connected to the second end 19A via a support shaft 31. The connection piece 28 is made of metal, for example. The guide groove 27 is provided along the longitudinal direction of the extension tube 20. The core rod 29 is disposed within the guide groove 27 and is movable within the guide groove 27 in the longitudinal direction of the extension tube 20 . The reinforcing pipe 30 is attached to the extension tube 20 and can move and stop in the longitudinal direction of the extension tube 20.

As shown in FIG. 3A, the second end 19A of the down tube 19, the extension tube 20, and the connecting piece 28 are positioned linearly, and the second end 19A is located inside the reinforcing pipe 30. If the reinforcing pipe 30 is stopped with a part of the extension tube 20, a part of the extension tube 20, and all of the connection pieces 28 in place, the vehicle body 11 can be held in an open state. On the other hand, as shown in FIG. 3(B), the reinforcing pipe 30 is moved along the extension tube 20, the connection piece 28 is folded against the extension tube 20, and the second end 19A is connected. The state where the vehicle body 11 is folded with respect to the piece 28 is the folded state of the vehicle body 11 shown in FIG. 4(B).

A footrest frame 32 shown in FIGS. 1 and 2 may be provided on the extension tube 20. The footrest frame 32 is movably attached to the extension tube 20 via a hinge 33. The state of the footrest frame 32 can be switched between a usage state shown by a solid line in FIG. 1 and a folded state shown by a two-dot chain line. When the footrest frame 32 is in use, the user P1 can place the foot 50 when the self-walking car 10 coasts. When the vehicle body 11 is folded, the footrest frame 32 can be prevented from becoming an obstacle by folding the footrest frame 32 in advance.

A rear tube 21 is connected to the rear end of the extension tube 20. A seat stay 23 is connected to the rear tube 21. Two rear tubes 21 and two seat stays 23 are provided. The rear wheel 13 is arranged between the rear tubes 21 and between the seat stays 23. The rear wheel 13 is rotatably supported by two seat stays 23. The rear wheel 13 is composed of a hub, spokes, rim, and tire. The outer peripheral surface of the tire of the rear wheel 13 is grounded on the road surface A1.

A seat tube 22 is connected to the upper end of the seat stay 23. Seat tube 22 supports saddle 15. The saddle 15 is movable in the height direction relative to the seat tube 22. The saddle 15 is an element on which the user P1 sits. The saddle 15 is, for example, a metal body covered with a covering material. The covering material is made of synthetic resin, synthetic leather, or the like. A saddle height adjustment mechanism 34 is provided for positioning and fixing the saddle 15 with respect to the seat tube 22 in the height direction. The saddle height adjustment mechanism 34 includes a positioning screw and the like. The user P1 can move the saddle 15 in the height direction relative to the seat tube 22 and fix the position by loosening and tightening the positioning screw.

A car stay 24 is connected to the seat stay 23. A car 35 is supported by the car stay 24 and seat tube 22. The cage 35 is arranged above the rear wheels 13 in the height direction. As the material of the cage 35, a metal material, a fiber-reinforced synthetic resin material, or the like can be used as appropriate. A mudguard 36 is provided on the outside of the rear wheel 13 in the radial direction of the rear wheel 13. The material of the mudguard 36 is, for example, metal or synthetic resin. The mudguard 36 is fixed to the extension tube 20 and the car stay 24, for example. A part of the mudguard 36 is arranged between the rear wheel 13 and the cage 35. A portion of the mudguard 36 is disposed between the two seat stays 23 and between the two car stays 24.

Furthermore, support legs 37 are attached to the rear tube 21 or the seat stay 23. The support legs 37 are elements that hold the self-walking car 10 in an upright state when the user P1 does not use the self-walking car 10. The support leg 37 is configured by, for example, a linear rod member. The vehicle body 11 can be folded and unfolded. When the tips of the unfolded support legs 37 come into contact with the road surface A1 as shown in FIG. 2, the self-walking car 10 can be held in an upright state. When the support legs 37 are folded as shown in FIG. 1, the tips of the support legs 37 are separated from the road surface A1. The user P1 can sit on the saddle 15 and walk.

The reverse running prevention mechanism 16 is a mechanism that allows the self-walking car 10 to move forward and prevents it from moving backward. In other words, the reverse running prevention mechanism 16 is a mechanism that allows the front wheels 12 to rotate in the first direction and prevents the front wheels 12 from rotating in the second direction. The first direction is counterclockwise in FIG. 1 and the second direction is clockwise in FIG. 1. That is, the first direction and the second direction are opposite directions. As shown in FIGS. 5A and 5B, the reverse running prevention mechanism 16 includes a gear 40 provided on the front wheel 12, an arm 41 attached to the front suspension 18, a tension spring 42, and a release cable 43. , and an operating member 44 provided on the handle 14.

The gear 40 rotates and stops together with the front wheel 12. A large number of teeth 40A are provided on the outer peripheral surface of the gear 40 along the rotation direction. The arm 41 is movably provided to the front suspension 18 via a support shaft 45. The arm 41 has a pawl 46 that engages and releases the teeth 40A of the gear 40. The pawl 46 is engaged with the teeth 40A of the gear 40 in front of the support shaft 45 in the front-rear direction of the self-walking car 10.

A tension spring 42 connects the front suspension 18 and the arm 41. The tension spring 42 serves to move the arm 41 counterclockwise in FIGS. 5(A) and 5(B). That is, the tension spring 42 serves to engage the pawl 46 with the teeth 40A of the gear 40. A release cable 43 connects the arm 41 and the operating member 44. The release cable 43 is made of metal, for example, and is flexible. The head tube 17 and the front suspension 18 are each provided with a support 47, and the release cable 43 is supported by the support 47 so as to be movable along the longitudinal direction.

The user P1 operates the operating member 44 with the right or left hand 51. When an operating force is applied to the operating member 44 and the release cable 43 is pulled, the arm 41 operates within a predetermined angle range clockwise in FIG. 5(A) against the force of the tension spring 42. Stop. Therefore, as shown in FIG. 5(B), the claw 46 of the arm 41 is released from the teeth 40A of the gear 40. Therefore, the front wheel 12 shown in FIG. 1 can rotate both clockwise and counterclockwise. In other words, the self-walking car 10 can move forward and backward (reverse).

On the other hand, when the user P1 releases the operating force on the operating member 44, the arm 41 is actuated counterclockwise in FIG. 5(B) by the force of the tension spring 42, as shown in FIG. 5(A). The claw 46 engages with the tooth 40A of the gear 40, and the arm 41 stops. When the front wheel 12 is turned counterclockwise in FIG. 1 while the pawl 46 is engaged with the teeth 40A, the pawl 46 passes over the teeth 40A one after another. Therefore, the self-walking car 10 can move forward. Furthermore, if you try to turn the front wheel 12 clockwise in FIG. 1 while the pawl 46 is engaged with the tooth 40A, the pawl 46 will remain engaged with one of the teeth 40A, and the front wheel 12 will rotate. Prevents clockwise rotation. In other words, the self-walking car 10 is prevented from retreating.

(Effects of embodiment)
In the self-walking car 10 of this embodiment, the user P1 straddles the saddle 15 with the front wheels 12 and rear wheels 13 in contact with the road surface A1, and the user P1 moves the car by walking with his or her feet 50. Therefore, part of the rider's own weight is received by the road surface A1 via the saddle 15, the vehicle body 11, the front wheels 12, and the rear wheels 13. Therefore, the burden on the feet 50 of the user P1 can be reduced. Moreover, since both feet 50 are on the road surface A1, it is easy to maintain the balance of the self-walking car 10, and it is possible to prevent it from falling over.

Furthermore, when the user P1 applies an operating force to the operating member 44, it is possible to prevent the front wheel 12 from rotating in the second direction. Therefore, when the self-walking car 10 is stopped in the direction of moving forward and climbing up the slope, it is possible to prevent the self-walking car 10 from going down the slope in the direction of backward movement. Further, when the self-walking car 10 moves forward down a slope, the user P1 can place his or her feet 50 on the footrest frame 32. Moreover, when the vehicle body 11 is folded by the coupling mechanism 26, the user P1 can easily transport and store the self-walking car 10.

(supplementary explanation)
An example of the technical meaning of the matters described in this embodiment is as follows. Self-walking car 10 is an example of a vehicle. The front wheel 12 is an example of a front wheel. The rear wheel 13 is an example of a rear wheel. The vehicle body 11 is an example of a vehicle body. Saddle 15 is an example of a saddle. Handle 14 is an example of a handle. The reverse running prevention mechanism 16 is an example of a reverse running prevention mechanism. FIG. 5A shows a first state of the reverse running prevention mechanism 16. FIG. 5(B) shows the second state of the reverse running prevention mechanism 16. The saddle height adjustment mechanism 34 is an example of a saddle height adjustment mechanism. The handle height adjustment mechanism 25 is an example of a handle height adjustment mechanism. The coupling mechanism 26 is an example of a folding mechanism.

This embodiment is not limited to what is disclosed using the drawings, and can be modified in various ways without departing from the gist thereof. For example, the footrest frame may not be provided. Moreover, the support leg may be a U-shaped member instead of a linear bar member.

The vehicle of this embodiment does not include pedals, chains, or a driving force source, and can be used as a vehicle in which the user can move the vehicle body by walking with his or her own feet.

DESCRIPTION OF SYMBOLS 10...Self-walking car, 11...Vehicle body, 12...Front wheel, 13...Rear wheel, 15...Saddle, 14...Handle, 16...Reverse run prevention mechanism, 25...Handle height adjustment mechanism, 26...Coupling mechanism, 34... Saddle height adjustment mechanism

Claims (4)

front wheels and rear wheels;
a vehicle body that rotatably supports the front wheels and the rear wheels, respectively;
a saddle provided on the vehicle body on which a user sits;
a handle provided on the vehicle body and operated by a user sitting on the saddle to adjust the direction of the front wheels;
A vehicle having
A reverse running prevention mechanism is provided to determine the rotation direction of the front wheel,
The reverse running prevention mechanism is
a first state in which the front wheel is allowed to rotate in a first direction and is prevented from rotating in a second direction opposite to the first direction;
a second state in which the front wheel is allowed to rotate in the first direction and in the second direction;
A vehicle that has a configuration that allows you to switch between. The vehicle according to claim 1,
The vehicle further includes a saddle height adjustment mechanism that adjusts the height of the saddle. The vehicle according to claim 1,
The vehicle further includes a handle height adjustment mechanism for adjusting the height of the handle. The vehicle according to claim 1,
The vehicle body is further provided with a folding mechanism,
The vehicle is characterized in that the folding mechanism is configured to switch between a state in which the vehicle body is folded and a state in which the vehicle body is unfolded.