WO2008044541A1

WO2008044541A1 - Simple movement device

Info

Publication number: WO2008044541A1
Application number: PCT/JP2007/069268
Authority: WO
Inventors: Takao Maruyama
Original assignee: Takao Maruyama
Priority date: 2006-10-05
Filing date: 2007-10-02
Publication date: 2008-04-17

Abstract

A simple movement device not so large as outdoor carts and wheelchairs, easily and compactly stowable, reduced in weight, allowing a person who can walk by themselves to take it out to the outside and easily use it as a self-propelled indoor car, and not belonging to any category of conventional vehicles. A front wheel unit (U2) is attachable to and detachable from a vehicle body unit (U1). The vehicle body unit (U1) has at least a backrest (8), a seat (7), two rear wheels (3), and a folding mechanism (4) making the vehicle body unit (U1) foldable. The front wheel unit (U2) at least has a handle (5) on the upper part and a front wheel (2) on the lower part and is detachably connected to the front of the vehicle body unit (U1) through a connection part (X). With these both units (U1, U2) connected to each other, the movement device can travel on three wheels that are the two rear wheels (3) and one front wheel (2).

Description

Specification

Simple moving device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a simple movement device that can be used as a leisure car, a shopping car, or the like of a concept that has not existed before.

Background art

[0002] A representative means for assisting walking is a wheelchair. As shown in Patent Document 1, etc., the wheelchair stably supports the vehicle body with a total of four front wheels and two rear wheels, and the rear wheels are accompanied by wheels with large diameters so that they can be lifted by hand. The entire vehicle body is usually foldable so that it can be loaded on a wagon car and moved.

On the other hand, those who can walk independently do not generally use such wheelchairs. Among such devices that help people move, electric carts and the like as shown in Patent Document 2 are being offered to the market as those that are not as heavy and heavy as ordinary vehicles. These are made exclusively on the assumption that they will be used outdoors, and are far more robust and profound than wheelchairs.

Patent Document 1: Japanese Unexamined Patent Application Publication No. 2006-175021

Patent Document 2: Japanese Patent Laid-Open No. 2002-2489

Disclosure of the invention

Problems to be solved by the invention

[0004] By the way, even a person who can walk independently and has no connection with a wheelchair or the like often gets tired on the go. For this reason, for example, if there is a means of being able to sit down and go around slowly, for example indoors, such as in a shopping mall or leisure facility, it is not only for those with weak physical fitness, poor physical condition, and healthy people. It is also very convenient for the person.

[0005] However, conventional vehicles have no movement assistance means based on such an idea.

[0006] That is, as described above, it is a common wisdom that a conventional wheelchair is an auxiliary device for a non-healthy person or a person who cannot temporarily walk independently, and it is used by a normal person. Even so, it is made with an emphasis on functions that complement body functions at all times, so little consideration is given to fashionability that is light and compact enough to be folded and carried when not needed.

[0007] In the meantime, the electric carts described above are sturdily designed for outdoor use, so they cannot be brought indoors and cannot be carried in a car.

[0008] That is, it is desired that the weight is significantly reduced in order to be used by healthy persons and the like, and in order to be easily handled, it must be compactly folded.

[0009] The present invention has been made in view of such circumstances, and is not limited to the conventional concept of a vehicle, and based on a completely new idea, is not as exaggerated as an outdoor cart or a wheelchair, and is simple and simple. It is compact and foldable, lightweight, and can be used as a self-propelled indoor car by a person who can walk on its own for easy use as a self-propelled indoor car. For the purpose of providing a simple mobile device!

Means for solving the problem

[0010] In order to achieve this object, the present invention takes the following measures.

[0011] That is, the simple movement device of the present invention is such that the front wheel unit can be attached to and detached from the vehicle body unit, and the vehicle body unit has at least a back seat and two rear wheels and a folding mechanism. The front wheel unit has a handle at the upper part and a front wheel at the lower part, and is detachably connected to the front of the vehicle body unit via the connecting part. It is characterized by being able to travel with a total of 3 wheels, 2 rear wheels and 1 front wheel.

[0012] Thus, the simple movement device of the present invention is completely novel compared to the prior art in that it is a foldable three-wheel simple movement device. In addition, the use of three wheels simplifies the structure of the frame and axle compared to a four-wheel structure such as a wheelchair. If the unit and the front wheel unit are separated, the vehicle body unit can be folded more compactly, and the front wheel unit itself is compact, so that these can be handled easily.

[0013] In order to give the vehicle body unit before connection an appropriate state suitable for connection, the vehicle body unit cooperates with the rear wheel in a state before connection of the front wheel unit to ensure that the vehicle body unit moves independently. It is preferable to provide an auxiliary wheel.

[0014] In this case, in order for the auxiliary wheels to function only when necessary, it is desirable to set the auxiliary wheels to be in a non-grounded state with the front wheel unit connected to the vehicle body unit.

[0015] In order to allow the front wheel unit to be easily attached and detached while seated on the vehicle body unit, the connecting portion is provided on the front wheel unit side and includes front and rear frames extending along the center portion in the width direction of the vehicle body unit. It is effective to connect the footrest located on the vehicle body unit side and located on the front and lower side in the unfolded state of the vehicle body unit.

[0016] In order to realize the automatic traveling function without waste, it is preferable that the front wheel unit is provided with a drive unit that rotationally drives the front wheels, and a footrest is configured or supported by a part of the drive unit. .

[0017] In order to provide a function for the user to travel on his own as necessary, and to prepare for an emergency or the like, the vehicle body unit is provided with a drive unit that rotationally drives at least one of the rear wheels, and the front wheel unit has A configuration in which a pedal for rotating the front wheels is provided is effective.

[0018] In order to incorporate the drive unit in the vicinity of the axle in a compact manner, it is advantageous that the drive unit incorporates a motor that directly drives the axle.

[0019] When the vehicle body unit is folded in a direction in which the rear wheels are close together via the folding mechanism in a state where the front wheel unit is not connected, a footrest is appropriately and effectively provided on the vehicle body unit. For this purpose, the footrest can be retracted from the use position so as not to interfere with its folding operation, and the footrest can be rotated and the vehicle body unit by holding the footrest in the use position and connecting the front wheel unit. It is preferable that the folding is prohibited by the connecting portion.

[0020] Alternatively, when the vehicle body unit is folded in a direction in which the rear wheels are close to each other via a folding mechanism, the width of the folded vehicle body unit is effective in order to effectively display a compact storage state. It is desirable to define the length of the front wheel unit handle so that it is within the dimensions.

[0021] In order to achieve this object, the present invention has taken the following other means.

That is, the simple movement device of the present invention supports the vehicle body with a total of three wheels, one front wheel and two rear wheels. The vehicle body is provided with a folding mechanism and can be folded, and the front wheel is attached to the vehicle body via a connection part that forms a part of the folding mechanism, so that the folding operation of the vehicle body is not hindered. In this state, the vehicle body is disposed so as to be steerable at the center in the width direction of the vehicle body.

[0023] First of all, the present invention is completely novel compared to the prior art in that it is a foldable three-wheel simple moving device. In addition, the use of three wheels simplifies the structure of the frame and axle compared to a four-wheel structure such as a wheelchair. The steering function and the folding function of the vehicle body can be appropriately ensured by being attached via the connecting portion even in the central position in the direction.

As a specific embodiment, the vehicle body can be folded in a direction in which the rear wheels approach each other, and the connection portion is provided at each of the rear end portions of the pair of movable frames spaced apart in the width direction of the vehicle body. In addition to pivoting around a vertical axis, the front ends of both movable frames are pivotally attached to a common vertical axis or an adjacent vertical axis, and the front frame such as a stem or head tube is directly attached to the vertical axis. Or those that are configured indirectly.

[0025] In order to appropriately realize a self-propelled structure, among the components of the vehicle body, a self-propelled driving means is attached to a frame that constitutes a part other than the folding mechanism, and a driving wheel is attached to the driving means. It is effective to set the drive means and the drive wheels so that they do not interfere with the folding operation and are within the width of the folded vehicle body.

[0026] Specifically, the drive wheel is a fourth wheel provided on the vehicle body, and the fourth wheel is attached to the vehicle body between the front wheel and the rear wheel, or any one of the rear wheels is mounted. It is possible to consider a mode in which it is used as it is as a drive wheel.

[0027] In order to effectively complement the drive system, the front wheels are equipped with pedals for footing, and a footrest on which a foot is placed during self-running is provided on the vehicle body so that both of them can be retracted when not needed. It is desirable to keep it.

[0028] In order to ensure the steering function and stability during traveling while ensuring the folding function described above, the steering wheel for steering the front wheels should be provided so as to be within the width of the folded vehicle body. Is effective. [0029] In the above, the back and the seat constituting the vehicle body are constituted by a stretched fabric stretched in a state where the user can sit down and sit deeply when in use, and are folded and folded together when the vehicle body is folded. Les, especially desiring to be.

The invention's effect

[0030] Since the simple movement device of the present invention has the above-described configuration, it can be simplified in structure and reduced in weight, and since it is simple, it is easy to pursue design. Since it can be easily loaded into the trunk, etc., and can be easily deployed and used as needed on the road, it is easy for healthy people to use as leisure cars or shopping cars at leisure facilities and building floors. In addition, it has the power to be used as a new vehicle that is completely new to the conventional fashion.

Brief Description of Drawings

FIG. 1 is a perspective view of a simple movement device according to an embodiment of the present invention.

FIG. 2 is a partial plan view of the vehicle body unit in an unfolded state.

FIG. 3 is a partial front view of the vehicle body unit in an unfolded state.

FIG. 4 is a perspective view showing a state where the vehicle body unit and the front wheel unit of the simple movement device are separated.

FIG. 5 is a partial plan view of the vehicle body unit in a folded state.

FIG. 6 is a partial front view of the vehicle body unit in a folded state.

FIG. 7 is a perspective view corresponding to FIG. 1 showing a modification of the present invention.

FIG. 8 is a perspective view corresponding to FIG. 4 showing the modification.

FIG. 9 is a perspective view of a simple movement device according to an embodiment of the present invention.

FIG. 10 is a partial plan view of the simple mobile device in use.

FIG. 11 is a partial front view of the simple mobile device in use.

FIG. 12 is a partial plan view of the simple movement device in a folded state.

FIG. 13 is a partial front view of the simple movement device in a folded state.

BEST MODE FOR CARRYING OUT THE INVENTION

[0032] (First embodiment)

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

[0033] As shown in Fig. 1 to Fig. 3, this simple movement device is composed of one front wheel 2 and two rear wheels 3. When not in use, the vehicle body unit U1 and the front wheel unit U2 are separated as shown by the arrows in FIG. 4, and the vehicle body unit as shown by the arrows in FIGS. U1 is folded in the width direction so that it can be loaded into the trunk of the car along with the front wheel unit U2.

More specifically, the vehicle body unit U1 includes a folding mechanism 4 between a pair of left and right base frames 11 and 11 extending in the front-rear direction and between a pair of left and right seat frames 12 and 12 positioned on the upper side thereof. Are connected by two pairs of X-links 41 and 42, and the base frames 11 and 11 on the lower side and the seat frames 12 and 12 on the upper side can be folded toward each other. Has been. The X links 41 and 42 are configured so that the width of the vehicle unit U1 at the time of deployment shown in FIGS. 2 and 3 can be folded to about 1/3 as shown in FIGS. In order to securely hold the folded state, an appropriate stopper or lock mechanism may be provided at a position not shown. From the rear end of the base frame 11, a vertical frame 13 is erected almost upward, and from the front end of the base frame 11, an oblique frame 14 that is curved and extends obliquely rearward is erected. The vertical frame 13 and the oblique frame 14 are coupled in the vicinity of the upper end, and the rigidity of the vehicle body unit U1 is secured by an appropriate connection structure between the frames.

[0035] A seat 7 is installed between the left and right seat receiving frames 12 and 12, and a back 8 is installed between the left and right vertical frames 13 and 13. The seat 7 and the back 8 are constituted by a flexible tension fabric a, and a cushion C is disposed on the surface as needed. Zhangjia is folded and folded together when the body 1 is folded. The back 8 can be reclined through a link lining structure (not shown) provided in the upper half of the vertical frame 13.

[0036] In addition, a footrest 15 about the longitudinal axis m at the front ends of the left and right base frames 11 takes a substantially vertical posture as shown in Figs. 5 and 6 and takes a substantially horizontal posture from Figs. It is provided so as to be rotatable between up to 3 use positions, and has rigidity capable of withstanding an overload of about normal adult weight while being held in the use position. These left and right footrests 15 and 15 are provided with connecting holes 15a in the vicinity of the butt end side.

Further, auxiliary wheels 16 are provided at the front end portions of the left and right base frames 11. This auxiliary wheel 16 is grounded in the state shown in FIG. 4 where the front wheel unit U2 is separated, and the rear wheel 3 is connected to the vehicle. The body unit 1 is supported in a movable state slightly inclined forward.

[0038] On the other hand, the front wheel unit U2 has a handle 5 attached to the upper part of a main frame 21 composed of a stem, a head tube and the like, and a motor and battery for directly driving an axle like a hub motor via an arm 22 at the lower part. The front wheel 2 is attached in a state where it can be rotationally driven by a built-in motor of the drive unit 6. The upper surface of the casing constituting the drive unit 6 can be used as a footrest 6a, and the hand nove 5 has a length that fits within the width of the folded body unit U1. A brake 5a is attached to the handle 5, and a part of the handle 5 adjusts the vehicle speed.

[0039] In addition, a part of the main frame 21 has a front and rear frame 23 extending in a rearward direction and curving so as to avoid interference with the front wheel 2, and is rigidly in contact with the vehicle body. Two connecting shafts 23a are arranged with the shaft center facing up and down at a portion corresponding to the connecting hole 15a provided in the footrest 15 of the unit U1.

[0040] Then, from the folded state of Figs. 5 and 6, the vehicle body unit U1 is unfolded in the direction opposite to the arrow in Fig. 4, and the front wheel unit U2 is brought closer to the direction opposite to the arrow in Fig. 4 to With the auxiliary wheel 16 slightly lifted, the connecting shaft 23a provided at the extending end of the front and rear frame 23 is engaged with the connecting hole 15a provided in the footrest 15 of the vehicle body unit U1 with an upward force. Thus, the connecting shaft 23a and the connecting hole 15a constitute a connecting portion X shown in FIG. 1, and the vehicle body unit U1 and the front wheel unit U2 are integrally connected at the connecting portion X. In this state, the auxiliary wheel 16 is ungrounded, and a simple moving device that can be driven by a total of three wheels including one front wheel and two rear wheels is completed.

[0041] It should be noted that a connecting shaft 23a is provided downward at the extended end of the front and rear frame 23, and this connecting shaft 23a is inserted into the connecting hole 15a provided in the footrest 15 of the vehicle body U1 from above and engaged. It is also possible to adopt a mode in which the In this case, when the connecting hole 15a is lowered straight with respect to the connecting shaft 23a, the engagement between the connecting shaft 23a and the connecting hole 15a is released. The relationship between the connecting shaft 23a and the connecting hole 15a is as follows. If the connection shaft 23a is made somewhat tight relative to the connection hole 15a, it is supported only by the vehicle unit U1 and the front wheel 2 that are supported only by the rear wheel 3. The front wheel unit U2 falls in the opposite direction In addition, the relative movement of the connecting shaft 23a and the connecting hole 15a hardly occurs. Therefore, it can be expected that the engagement state between the connecting shaft 23a and the connecting hole 15a is appropriately maintained with a simple connecting structure. Of course, no matter which direction the connecting shaft 23a is inserted into the connecting hole 15a, the connecting shaft 23a can be secured by an appropriate lock mechanism or latch mechanism that can be easily unlocked in order to secure the engaged state. Lock or moor at the position inserted into the connecting hole 15a.

[0042] The simple movement device of the present embodiment configured as described above has a front-rear dimension of about 130 cm in the state shown in Figs. 1 to 3 in which the vehicle body unit U1 and the front wheel unit U2 are connected. When the units Ul and U2 are separated and the vehicle body unit U1 is folded as shown in FIGS. 4 to 6, the width of the vehicle body unit U1 is about 1/2 to 1/3, and the front wheel unit U2 is also Since the width dimensions are almost the same, it can be easily stored in the trunk of a car. In addition, wiring etc. are abbreviate | omitted in the figure.

[0043] As described above, in the simple movement device of this embodiment, the front wheel unit U2 can be attached to and detached from the vehicle body unit U1. The vehicle body unit U1 has at least a back 8, a seat 7 and two rear wheels 3 and can be folded with a folding mechanism 4. The front wheel unit U2 has at least a handle 5 at the top and one at the bottom. It has a front wheel 2 and can be detachably connected to the front of the vehicle body unit U1 via a connecting part X. When these two units Ul and U2 are connected, a total of two rear wheels 3 and one front wheel 2 are combined. It can be driven by three wheels.

[0044] As described above, the simple moving device shown in the figure is completely novel in that it is a foldable three-wheeled moving cart. The three-wheel structure simplifies the structure of the frame and axle compared to a four-wheel structure such as a wheelchair, making it lighter and more compact as a whole. By separating the front wheel unit U2, the vehicle unit U1 can be folded more compactly, and the front wheel unit U2 is compact in itself, so these are loaded into the trunk of the car and needed at the destination. It can be a convenient means of transportation that can be handled easily, such as deploying in response. Also, compared to a normal wheelchair with two front wheels, when driving with one front wheel 102, the force that will increase the front wheel diameter moderately due to load support and steering, conversely Increases running stability, In addition, it is difficult to get the wheel in the recesses of the road surface, including the railroad crossing, so that the driving safety can be improved effectively.

[0045] At that time, since the vehicle body unit U1 is provided with auxiliary wheels 16 that cooperate with the rear wheel 3 to secure the autonomous movement of the vehicle body unit U1 before the front wheel unit U2 is connected, When the base frame 11 of the body unit U1 in the state is prevented from being directly grounded, the entire body can be properly supported, and the necessary force to move the body unit U1 slightly when attaching to and detaching from the front wheel unit U2 etc. It is the power S that makes you stool.

[0046] In particular, since the auxiliary wheel 16 is in a non-grounded state when the front wheel unit U2 is connected to the vehicle body unit U1, it is effective that the auxiliary wheel 16 interferes with traveling when the front wheel unit U2 is connected. In addition, since the number of wheels is three, even if the vehicle body is tilted, the auxiliary wheels 16 can be effectively prevented from falling by grounding.

[0047] Further, the connecting portion X is located on the front wheel unit U2 side and extends along the front-rear frame 23 extending along the center in the width direction of the vehicle body unit U1, and on the vehicle body unit U1 side in the deployed state of the vehicle body unit U1. Since the front wheel unit U2 is pulled and connected or disengaged by pushing the front wheel unit U2 in a state of straddling the vehicle unit U1, the lower limb portion is pushed forward. Interference with the front and rear frames 23 can be avoided, and by using the footrest 15 as a connecting portion, a force S can be used to effectively secure the connecting place in the center in the width direction of the vehicle body unit U1.

[0048] Further, since the drive unit 6 that rotationally drives the front wheel 2 is provided in the front wheel unit U2, and a part of the drive unit 6 can be used as the footrest 6a, the automatic traveling function can be effectively provided. At the same time, it is possible to effectively use the protrusion of the drive unit 6 on the contrary to ensure the stable use condition S. Of course, it is possible to use the footrest 15 when traveling. If the automatic driving function is mainly used in this way, a large rowing wheel such as a wheelchair is not necessary, so that the overall size can be further reduced.

[0049] Since the drive unit 6 also uses a type incorporating a motor that directly drives the axle, the drive unit 6 can be compactly assembled in the vicinity of the axle of the wheel 2. When such a power unit is bulky more than necessary, it is possible to use a commercially available product that is generally available in the market. The drive unit 6 is only a motor and the battery is placed on the vehicle body unit U1 side. It is possible to install and connect the power supply line when connecting both units Ul and U2.

[0050] In addition to the above, the vehicle body unit U1 is folded in the direction in which the rear wheels 3 and 3 are close to each other via the folding mechanism 4 in a state where the front wheel unit U2 is not connected, and the footrest 15 is In addition to being able to move from the use position to the retracted position so as not to hinder the folding operation of the vehicle, by holding the footrest 15 in the use position and connecting the front wheel unit U2, the rotation of the footrest 15 and the vehicle body The folding operation of unit U1 is prohibited by connecting part X. For this reason, it is possible to secure the connection place of the front wheel unit U1 without impairing the compact folding function of the vehicle body unit U1, and at the same time, the vehicle body unit U1 is accidentally folded by connecting the footrest 15 and the front wheel unit U2. It is possible to inhibit operation and effectively improve stability during use.

[0051] Furthermore, as the vehicle body unit U1 is configured to be folded in the direction in which the rear wheels 3 and 3 come together via the folding mechanism 4, it will fit within the width dimension of the folded vehicle body unit U1. Since the length of the handle 5 of the front wheel unit U2 is specified, the body unit U1 and the front wheel unit U2 can both be compactly stored when folded. In addition, the fact that the handle 5 is in the front not only maintains the stability of the body but also secures a feeling of psychological stability.

[0052] Then, the back 8 and the seat 7 are configured by a tension ground a that is stretched so that the seat 8 can be seated deeply and seated in the back 8 during use, so that the body unit U1 can be folded and folded together when folded. Since there has never been a three-wheeled mobile device that can be used by sitting deeply in this way, it can be seated in a shopping mall, leisure facility, etc. if necessary, so that it can be moved slowly It can be extremely convenient.

Note that the specific configuration of each unit is not limited to the above-described embodiment.

[0054] For example, as shown in Figs. 7 and 8, the vehicle body unit U1 is provided with a drive unit 106 that rotates and drives at least one of the rear wheels 3, and the front wheel unit U2 is used for toe that rotates the front wheel 2. The pedal 9 may be provided. In this case, it is desirable that the driving unit 106 can directly drive the rear wheel 3 such as a hub motor or the like. For the driving unit 106, a force that employs a type of motor that does not cause drag resistance when the pedal travels, or as appropriate. The pedal 9 rotates around the axis n and is compact so that it follows the side of the front wheel 3. Let it fold.

[0055] With this configuration, the user can switch between a self-driving state and an electrically driven state, so that it can be used according to the purpose, application, and situation, and can be used for a long time when going out. This is also useful in that the pedal 9 can be used effectively when the battery is consumed.

[0056] In addition, various modifications can be made without departing from the spirit of the present invention, such as adopting a folding mechanism other than the above-mentioned X link mechanism, or realizing the connecting portion with a structure other than the above.

[0057] (Second embodiment)

Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

[0058] As shown in Figs. 9 to 11, this simple movement device is such that the vehicle body 101 is supported by a total of three wheels, one front wheel 102 and two rear wheels 103, in use. Sometimes, as shown in FIGS. 12 and 13, the entire vehicle is folded in the width direction without being obstructed by the front wheel 102 and can be loaded into the trunk of a car.

More specifically, the vehicle body 101 is composed of two pairs of X links, in which the folding mechanism 104 is formed between the base frames 111 and 111 extending in the front-rear direction and between the seat frames 112 and 112 positioned on the upper side thereof. They are connected by 141 and 142, and can be folded in the direction in which the lower base frames 11 1 and 111 and the upper seat frames 112 and 112 are in close contact with each other. X-links 141 and 142 are configured so that the width of the vehicle body 101 in use as shown in FIGS. 10 and 11 can be folded to about 1/3 as shown in FIGS. 12 and 13. In order to securely hold the folded state, an appropriate stopper or lock mechanism is provided at a position not shown. A vertical frame 113 is erected substantially upward from the rear end of the base frame 111, and an oblique frame 114 that is curved and extends obliquely rearward from the front end. The oblique frame 114 is coupled in the vicinity of the upper end, and other appropriate portions between the frames are rigidly connected to each other as necessary.

[0060] The front wheel 102 is attached to the base frame 111 so as to be steerable at the center in the width direction of the vehicle body 1 via a connecting portion 143 that constitutes a part of the folding mechanism 104.

[0061] The connecting portion 143 separates the rear ends of the pair of movable frames 143a in the width direction of the vehicle body 101. Each base frame 101 is pivotally attached to each base frame 101 so that it can rotate around the vertical axis nl, and the front ends of both movable frames 143a can be rotated around the vertical axis n2 set at two locations close to the bracket 143d. A front frame 121 such as a stem or a head tube is attached to the vertical axis n2 via the bracket 143d and a take-out frame 143b rigidly connected to the bracket 143d. Is curved along the front wheel 2 so as not to interfere with the front wheel 102. In order to prevent the pivoted part around the vertical axis n2 from being in a valley state, or to prevent the vertical axis n2 from being tilted, a part of the frame 143b or bracket 143 is taken out as shown by the imaginary line in the figure. A reinforcing cover 143c firmly attached to d may be slid on the movable frame 143a.

[0062] Then, a front wheel 102 having a foot pedal 122 is attached to the lower end side of the front frame 121, and a handle 105 is attached to the upper end side. The node nore 105 employs a smaller one that fits within the width of the folded car body 101, and the pedal 122 can also be folded. In order to further stabilize the usage state, it is of course possible to adopt an appropriate reinforcing structure such as connecting an appropriate portion between the front frame 121 and the vehicle body 101 with a separate reinforcing frame. is there.

In this embodiment, the motor box 161 constituting the driving means D is fixed to the base frame 111 of the vehicle body 101, and the driving wheel 106, which is the fourth wheel, is directly connected to the output shaft 161a of the motor box 161. The driving wheel 106 is driven while being in contact with the road surface, so that a moving force is applied to the vehicle body 101 via the base frame 111. The battery constituting the driving means D is provided in the motor box 161 or attached to the motor box 161. The motor is connected to a force that does not cause drag when pedaling 122, or an appropriate clutch that cuts off the power.

[0064] Then, a seat 107 is installed between the left and right seat receiving frames 112, 112, and a back 108 is installed between the left and right vertical frames 113, 113. The seat 107 and the back 108 are constituted by a flexible tension fabric a, and are used with a cushion C disposed on the surface as necessary. The back 108 is connected through a link lining structure (not shown) provided in the upper half of the vertical frame 113. And reclining is possible.

[0065] As a configuration other than the above, the upper end of the diagonal frame 114 is accompanied by a handle for nursing care like a wheelchair, so that luggage such as shopping bags can be hung. ! / From left and right base frames 111, a shaft is extended forward and a footrest 192 is provided.When not necessary, it can be rotated 90 ° as shown in Fig. 11 → Fig. 13 so that it can be held in the retracted position. It is. Although the accelerator and brake required for electric drive are not shown in the figure, an appropriate structure such as attaching the operation part to the handle part of the handle 105 or incorporating it on or near the footrest 192 should be adopted. Can do.

[0066] The simple movement device of the present embodiment configured as described above has a vertical dimension set to about 130 cm, and has a width in the state shown in Figs. 12 and 13 folded from the use state shown in Figs. Dimensional force S It is about l / 2 to l / 3 and can be stored in the trunk of the car. In the folded state, the handle 105, motor box 161, pedal 122, etc. are all in the folded state. It is set to fit within the width dimension.

In this way, the simple movement device of the present embodiment supports the vehicle body 101 with a total of three wheels including one front wheel 102 and two rear wheels 103. The vehicle body 101 is provided with a folding mechanism 104 so that it can be folded, and the front wheel 102 is attached to the vehicle body 101 via a connecting portion 143 that constitutes a part of the folding mechanism 104, and does not interfere with the folding operation of the vehicle body 101. The vehicle body 101 is steerably disposed at the center in the width direction, and has a completely novel structure that is not conventional in that it is a foldable three-wheel simple movement device.

[0068] Since the three-wheel structure simplifies the structure of the frame and axle compared to a four-wheel structure like a wheelchair, the overall structure can be made lighter and more compact, and it is easier to pursue design. In addition, the steering function and the folding function of the vehicle body 101 can be appropriately ensured by attaching the front wheel 2 via the connecting portion 143 even when the front wheel 2 is at the center in the width direction. Although the safety and stability of the appearance is not as high as 4 wheels, on the contrary, the 3 wheels make it easy to move, so it is highly mobile when used by ordinary people. The Compared to a normal wheelchair with two front wheels, etc., when driving is supported by one front wheel 102, the front wheel diameter will be increased appropriately due to load support and steering, but conversely This increases running stability, and also includes recesses in the road surface, including railroad crossings. Moreover, since it becomes difficult to take a wheel, driving safety can also be improved effectively.

[0069] Specifically, the vehicle body 101 can be folded in a direction in which the rear wheels 103, 103 approach each other, and the connection portion 143 has a rear end portion of the pair of movable frames 143a spaced apart in the width direction of the vehicle body 101. Each pivotally pivots around the vertical axis nl, and the front ends of both movable frames 14 3a pivot around the adjacent vertical axis n2. The bracket 143d and the take-out frame 143b are attached to the vertical axis n2. It is configured by attaching a front frame 121 such as a stem or a head tube.

[0070] If the vehicle body 101 can be folded in the direction in which the rear wheels 103, 103 come closer to each other in this way, it can be used in a manner like a vehicle chair. If configured in this way, the connecting portion 143 appropriately follows the folding operation of the vehicle body 101 with scissors-like movement during folding. As described above, since the connection state of the front wheel 102 to the vehicle body 101 is realized and maintained in a manner in which there is no frame that runs through the center of the vehicle body 101, the front wheel mounting structure that does not interfere with the folding mechanism 104 should be effectively employed. Is possible.

[0071] Further, among the components of the vehicle body 101, a self-propelled driving means D is attached to a frame (that is, the base frame 111 in this embodiment) that constitutes a part other than the folding mechanism 104, and this driving is performed. The driving wheels 106 are directly connected to the means D. At this time, the driving means D and the driving wheels 106 do not interfere with the folding operation as shown in FIGS. 12 and 13 and are within the width of the folded vehicle body 101. Set!

[0072] In this way, the folding function can be effectively ensured even for a self-propelled type. Moreover, if the driving wheel 106 is directly connected to the driving means D, a transmission mechanism in the middle is not required, so that it is light and compact, and if it is self-propelled, there is no need for a large rowing wheel like a wheelchair. Therefore, the overall size can be further reduced.

Specifically, the drive wheel 106 is a fourth wheel provided on the vehicle body 101, and the drive wheel 106, which is the fourth wheel, is attached to the vehicle body 101 at an appropriate portion between the front wheel 102 and the rear wheel 103. It is attached. In this way, by disposing the drive wheel 106 in a place different from the three wheels, the arrangement of the motor, battery, etc. that constitute the drive means D for self-propelled driving including the drive wheel 106 is in principle free. Therefore, it is easy to adopt an inexpensive motor with relatively few restrictions. In addition, simple mobile devices that are not self-propelled can be used later for self-propelled devices. It is possible to easily cope with diversification of specifications by sharing the main body between the two.

[0074] Further, the front wheel 102 is provided with a pedal 122 for rowing, and a footrest 192 on which a foot is placed during self-running is provided on the vehicle body 101, and both of them can be operated by a flap. In this way, by providing the pedal 122 for rowing in addition to the electric drive D, the speed can be adjusted freely, and it is also provided when the battery is consumed, and the footrest 192 contributes to the stability of the posture during the electric drive. obtain. Since these can be retracted when they are not needed, it is possible to easily use them so that the pedal 122 and the footrest 192 do not interfere with each other or to prevent the folding.

[0075] In addition, a handle 105 for steering the front wheel 102 is provided so as to be within the width of the folded vehicle body 101. The presence of such a handle 105 on the front side not only keeps the body stable. Psychological stability can be secured. In addition, since the handle 105 fits within the width of the vehicle body 101 when folded, the handle 105 can be easily stored in the trunk of the car.

[0076] Furthermore, the back 108 and the seat 107 constituting the vehicle body 101 are constituted by a stretched area a stretched in a state where the vehicle can be seated deeply by leaning on the back 108 when in use, and the vehicle body 101 is folded together when folded. A three-wheeled mobile device that can be folded and used in this way has never existed in the past, and it can be seated in a shopping mall or leisure facility as needed. And can be very convenient to move around slowly.

If there is a risk of falling if the three-point support is used, it is advisable to provide an auxiliary wheel as in the first embodiment at the position where it contacts the ground when tilting as a countermeasure. In this case, in a three-wheel structure, the center of gravity is usually located in front of the center, so it is preferable to provide an auxiliary wheel in front of the center.

Further, instead of providing the fourth wheel, an aspect in which at least one of the rear wheels 103 is used as a drive wheel is possible. Thus, when the rear wheel 103 is used as a driving wheel, it is necessary to incorporate a driving means such as a motor in the shaft portion of the rear wheel 103 and directly connect the rear wheel. Since it is not necessary to occupy so much space, it is possible to avoid the obstruction when folding as much as possible. [0079] Further, the folding mechanism is not limited to the X link as described above, and the folding method does not prevent the adoption of a folding mechanism that bends from the rear wheel to the front wheel.

Other configurations can be variously modified without departing from the spirit of the present invention.

[0081] For example, in the configuration of the second embodiment, if a mechanical part is divided into a vehicle body unit and a front wheel unit at the vertical axis nl in the front-rear direction, and the fitting structure is detachable at that part, the vehicle body unit is It has at least a back 108, a seat 107, and two rear wheels 103 and can be folded by two pairs of X links 141 and 142 constituting a folding mechanism 104. The front wheel unit has a handle 105 at least at the top and 1 at the bottom. It has two front wheels 102 and can be detachably connected to the front of the vehicle body unit via a vertical shaft nl which is a connecting portion. When these two units are connected, two rear wheels 103 and one front wheel 102 are connected. Since the vehicle can be driven by a total of three wheels, it can be configured as an embodiment of the invention according to claim 1. In this case, since the movable frame 143a of the front unit can be folded around the vertical axis n2, it can be folded small when removed.

Industrial applicability

[0082] According to the present invention described in detail above, it can be stored as easily and compactly as an outdoor cart or a wheelchair, but it is light and strong, and can be taken by a person who can walk independently to take a self-propelled run. It is possible to provide a simple moving device that does not belong to any conventional vehicle category and can be easily used as a type indoor car or the like.

Claims

The scope of the claims

[1] The front wheel unit is detachable from the vehicle body unit,

The vehicle body unit has at least a back seat and two rear wheels and is foldable with a folding mechanism. The front wheel unit has at least a handle at the upper part and a front wheel at the lower part and is connected to the vehicle body unit via a connecting portion. A simple moving device that is detachably connected to the front, and can be driven by a total of three wheels including two rear wheels and one front wheel in these connected states.

[2] The simple movement device according to claim 1, wherein the vehicle body unit is provided with an auxiliary wheel that cooperates with the rear wheel in a state before the front wheel unit is connected to secure the autonomous movement of the vehicle body unit.

[3] The simple movement device according to claim 2, wherein the auxiliary wheel is ungrounded while the front wheel unit is connected to the vehicle body unit.

[4] The connecting portion includes a front and rear frame that extends along the widthwise center of the vehicle body unit on the front wheel unit side, and a footrest that is on the vehicle body unit side and is positioned in the front lower direction when the vehicle body unit is deployed. The simple moving device according to any one of claims 1, 2, and 3, wherein the devices are connected to each other.

[5] The simple movement according to any one of claims 1, 2, 3 and 4, wherein the front wheel unit is provided with a drive unit for rotationally driving the front wheel, and a footrest is configured or supported by a part of the drive unit. Equipment.

[6] The simple as described in any one of claims 1, 2, 3 and 4, wherein the vehicle body unit is provided with a drive unit for rotationally driving at least one of the rear wheels, and the front wheel unit is provided with a pedal for rotating the front wheel. Mobile device.

7. The simple movement device according to claim 5, wherein the drive unit incorporates a motor that directly drives the axle.

[8] The body unit is folded in the direction where the rear wheels come together through the folding mechanism in the state where the front wheel unit is connected! /, N! /, And the footrest performs the folding operation. It is possible to retreat from the use position so as not to interfere, and by connecting the front wheel unit while holding the footrest in the use position, rotation of the footrest and folding of the vehicle body unit are prohibited by the connecting part! The simple movement device according to claim 4. The body unit is folded in a direction in which the rear wheels are close to each other via a folding mechanism, and the length of the hand knob of the front wheel unit is defined so as to be within the width dimension of the folded body unit. The simple movement device according to any one of 1, 2, 3, 4, 5, 6, 7 and 8.

One front wheel and two rear wheels, with a total of three wheels supporting the vehicle body,

The vehicle body is foldable with a folding mechanism, and the front wheels are attached to the vehicle body via a connection part that forms part of the folding mechanism, preventing the vehicle from folding! A simple moving device characterized in that it is arranged to be steerable in a part.

The vehicle body can be folded in the direction in which the rear wheels approach each other, and the connecting part pivots around the vertical axis at the rear end of the pair of movable frames, separated from each other in the width direction of the vehicle body. 11. The front end of the frame is pivotally attached to a common vertical axis or an adjacent vertical axis, and a front frame such as a stem or a head tube is directly or indirectly attached to the vertical axis. Simple moving device.

Among the components of the car body, self-propelled driving means is attached to a frame that constitutes a part other than the folding mechanism, and driving wheels are directly connected to this driving means. At that time, these driving means and driving wheels are folded. 12. The simple movement device according to claim 11, wherein the simple movement device is set so as not to interfere with the operation and to be within the width of the folded vehicle body.

13. The simple movement device according to claim 12, wherein the driving wheel is a fourth wheel provided on the vehicle body, and the fourth wheel is attached to the vehicle body between the front wheel and the rear wheel.

13. The simple movement device according to claim 12, wherein any one of the rear wheels is a drive wheel.

15. The simple movement device according to claim 12, wherein a foot pedal is provided on the front wheel, and a footrest on which a foot is placed during self-running is provided on the vehicle body so that these can be retracted when not needed.

The simple movement device according to any one of claims 11 to 15, wherein a handle for steering the front wheel is provided so as to be within a width of the folded vehicle body.

The back and seats that make up the car body are made up of a stretched fabric that can be seated deeply in the back when in use, so that the car body can be folded and folded together when the car body is folded. The simple movement device according to claim 10 to 16.