JP2001008989A - Apparatus for supporting movement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and inexpensive apparatus for supporting movement that has enough driving force and can freely change the moving direction. SOLUTION: A pair of rear wheels 10 arranged in parallel toward the moving direction are connected inside hubs 12 of wheels 11 of themselves each other by attaching an axle 14 for their common use through an one-direction crutch and a driving axis of the driving motor 19 is connected with the axle 14. Accordingly, as the driving motor 19 is driven forward, a body of a car can easily be moved forward by the rotation of the pair of rear wheels 10 by means of the motor's driving force even then a large load is added. As a pair of rear wheels 10 become to be free to the driving axis each other by driving the driving motor backward, it can change its moving direction freely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking assist device or a wheelchair or other assisting device for assisting the movement of an elderly person or the like who has difficulty walking.

[0002]

2. Description of the Related Art Conventionally, as this kind of movement assisting device, there is a so-called silver car which is used by an elderly person for shopping, as a cane, or for carrying luggage.

[0003] However, these mobility aids are mainly used when elderly people walk on sidewalks or in supermarkets. Therefore, it is necessary that a large load is not applied during walking. When walking, walking in the head wind, or walking with large luggage,
A heavy load is applied, making walking difficult.

[0004] The inventor of the present invention has proposed a walking assist device in which one of a set of rear wheels that travels independently is driven by an electric motor (Japanese Utility Model Registration No. 3058881).

[0005]

However, in such a walking assist device, one of a set of independently driven rear wheels is driven by an electric motor. Or, it may interfere with traveling with large luggage stored.

On the other hand, it is conceivable to connect one set of rear wheels with a common axle, connect this axle to an electric motor, and drive one set of rear wheels simultaneously with an electric motor. Since the rear wheels of one set are rotated at the same speed by the electric motor, the direction of the auxiliary machine main body cannot be changed.

On the other hand, incorporating a differential gear for changing the direction as used in a four-wheel drive vehicle such as an automobile into the main body of the auxiliary machine has disadvantages such as making the main body of the auxiliary machine large and expensive.

Accordingly, an object of the present invention is to provide a small and inexpensive movement assisting tool having a sufficient driving force, capable of freely changing directions, etc., and having a sufficient driving force. is there.

[0009]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention provides at least two or more wheels arranged side by side with respect to the traveling direction in a hub of each wheel wheel via a one-way clutch. The present invention proposes a movement assisting device such as a walking assist device or a wheelchair in which an axle is mounted and connected and a drive shaft of a drive motor is connected to the axle.

[0010]

That is, in the present invention, for example, a pair of rear wheels connected by a common axle are connected by a common axle by driving a drive shaft of a motor in a clutch direction of a one-way clutch. Further, for example, one set of rear wheels cooperates with the axle to rotate the assisting device body in a direction to move forward, and therefore, even when a large load is applied to the vehicle body, the vehicle body can be easily advanced.

On the other hand, when the drive shaft of the motor is driven in the direction in which the one-way clutch is released, one set of rear wheels is disconnected from the common axle and is free from rotation in the direction opposite to the drive shaft of the motor. Therefore, it is possible to freely change the direction of the assisting device main body by rotating the set of rear wheels at different rotational speeds.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. Reference numeral 1 denotes a walking assist device according to the present invention.
A backrest sheet 4 is provided between the main pipes 3, 3, and both ends of a handle pipe 5 are inserted into upper ends of the main pipes 3, 3. Armrests 6, 6 are provided on both sides.

A storage box 8 covered with a lid 7 is disposed on the main body frame 2, and two sets of front wheels 9, 9 and rear wheels 10, 10 are provided on the lower surface of the main body frame 2. .

One set of rear wheels 10, 10 is provided with respective wheel wheels.
A common axle 14 is mounted and connected via a one-way clutch 13 press-fitted into a hub 12 of the vehicle 11, and one end of the axle 14 is inserted through a support plate 16 fixed to the main body frame 2 via a clip 15. Projecting from the hole 17, and the reduction gear
Attach 18.

On the other hand, 19 is a drive motor for the axle 14,
The drive shaft is provided with a drive gear 20 that meshes with the reduction gear 18, and its mounting holes 21, 22, and 23 have an insertion hole 24 in the support plate 16, a bolt 26 inserted in the guide holes 25, 25, and a guide bolt 27. , 27 are screwed through the collars 28,..., And the drive motor 19 is tilted about the bolt 26 to separate the gear 20 from the reduction gear 18. The drive shaft of the drive motor 19 is connected to the axle 14 by meshing with the drive shaft 18.

The switch 29 of the motor 19 is provided on the handle pipe 5. In this embodiment, the switch 26 comprises a forward button 29a, a reverse button 29b, and a fast / slow button 29c. 14 is driven by a motor 19 so as to rotate in the traveling direction of the auxiliary machine main body, and a pair of rear wheels 10 and 10 cooperate with the axle 14 by the clutch action of the one-way clutch 13 so that the auxiliary machine main body is rotated. It is driven to rotate in the traveling direction.

On the other hand, when the reverse button 29b is pressed, the axle 14 is driven by the motor 19 to rotate in the opposite direction, and the one-way clutch 13 releases the one pair of rear wheels 10, 10. It is separated from the axle 14 and becomes free for rotation in the opposite direction to the axle 14.

Further, when the fast / slow button 29c is pressed, the rotation speed of the axle 14 by the motor 16 is adjusted.

In the above configuration, the pedestrian walks by holding the handle pipe 5 and pushing the walking aid 1 instead of the walking stick, and if there is luggage, stores it in the storage box 8 and rests the upper surface of the lid 7. Also used for chairs.

When the walking aid 1 is approaching an uphill, traveling in a headwind, or traveling with large luggage, and a heavy load is applied to the vehicle body, the forward button 29a is pressed. When pressed, the axle 14 is driven by the motor 19 to rotate in the direction of travel of the auxiliary machine body, and the one-way clutch 13 acts as a pair of rear wheels.
Since the vehicle 10 and 10 are driven so as to rotate in the traveling direction of the auxiliary machine body in cooperation with the axle 14, even when a large load is applied to the vehicle body as described above, the driving force of the motor 19 (See FIG. 3).

When the reverse button 29b is pushed, the axle 14 is driven by the motor 19 to rotate in the opposite direction, and the two sets of rear wheels 10, 10 are released by the release of the one-way clutch 13. Since the vehicle body is separated from the axle 14 and becomes free against rotation in the opposite direction to the axle 14, the vehicle body can be freely changed in direction (see FIG. 4).

Further, the gear 20 is separated from the reduction gear 18 by tilting the drive motor 19 with the bolt 26 as an axis, so that the walking assist device 1 can be driven manually without depending on the driving force of the motor 19. You can also.

In this embodiment, a self-propelled walking assist device has been described. However, the present invention is also used as a so-called nursing-type wheelchair in which a caregiver travels a car body by seating an elderly person or a sick person who has difficulty walking. If the switch 29 of the motor 19 is provided within the reach of a seated person such as the armrest arm 6, 6 in the above-mentioned wheelchair, it can be used as a self-propelled wheelchair.

FIG. 5 shows an embodiment of a nursing-type wheelchair. A wheelchair 30 shown in this embodiment is provided with a switch 29 of a motor 19 on one side of the handle pipe 5 and a handle pipe. A brake 31 is provided on the other side of 5, and a seat 32 is provided between the armrest arms 6 and 6,
Footrests 33, 33 are provided at the front end of the vehicle body.

[0025]

In summary, according to the present invention, by driving the drive motor in, for example, the forward direction, even when a large load is applied to the vehicle body, one set of wheels is rotated by the drive force of the motor. The vehicle body can be easily advanced, and by driving the drive motor in the reverse direction, for example, one set of wheels is free with respect to the drive shaft, so that the direction can be freely changed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of an essential part of the embodiment.

FIG. 3 is an explanatory diagram when the common axle in the embodiment is rotated in the clutch operation direction.

FIG. 4 is an explanatory diagram when the common axle in the embodiment is rotated in the clutch release direction.

FIG. 5 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 1 is a walking aid 2 is a main body frame 3 is a main pipe 4 is a backrest seat 5 is a handle pipe 6 is an armrest arm 7 is a lid 8 is a storage box 9, 9 is a front wheel 10, 10 is a rear wheel 11 is a wheel wheel 12. The hub 13 is a one-way clutch 14 is a common axle 15 is a clip 16 is a support plate 17 is an insertion hole 18 is a reduction gear 19 is a drive motor 20 is a drive motor 20 is a drive gear 21, 22, and 23 is a mounting hole 24 is an insertion hole 25 and 25 is Guide hole 26 is bolt 27, 27 is guide bolt 28 is collar 29 is switch 29a is forward button 29b is reverse button 29c is fast / slow button 30 is wheelchair 31 is brake 32 is seat 33 is footrest

[Procedure amendment]

[Submission date] March 24, 2000 (200.3.2.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention provides two wheels arranged side by side in the traveling direction, respectively.
With a common axle in the wheel wheel bub
Then, connect the drive shaft of the motor to the axle, and
Switch for one-way rotation of the common axle.
The clutch is released for rotation in the opposite direction.
Mounted in the hub of each axle wheel so that
The present invention proposes a walking assist device in which the axle is connected to a hub .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

FIG. 5 shows an example of use of a nursing-type wheelchair. A wheelchair 30 shown in this example is provided with a switch 29 of a motor 19 on one side of the handle pipe 5 and a handle pipe. A brake 31 is provided on the other side of 5, and a seat 32 is provided between the armrest arms 6 and 6,
Footrests 33, 33 are provided at the front end of the vehicle body.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5 is a perspective view showing an application example of the present invention.

Claims (4)

[Claims] At least two or more wheels arranged side by side with respect to the traveling direction are connected to a hub of each wheel wheel by mounting a common axle via a one-way clutch, and a motor is connected to the axle. A movement assisting tool, characterized by connecting the drive shafts of the above. 2. The hub of each axle wheel such that the one-way clutch acts as a clutch for one-way rotation of a common axle and disengages as the one-way clutch rotates in the opposite direction. The movement assisting device according to claim 1, which is mounted inside. 3. The movement assisting device according to claim 1, wherein the movement assisting device is a walking assist device. 4. The movement assisting device according to claim 1, wherein the movement assisting device is a wheelchair.