JP3237910U - Electric assist seated walking vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrically assisted seated walking vehicle capable of automatically traveling with a user when the user is tired of pushing the vehicle. At the time of pushing by hand, a user grasps handle portions 11A and 11B and walks while pushing an electrically assisted seated walking vehicle 10. When the user gets tired, by turning on the switches 27A and 27B while sitting on the stool 16 and putting both feet on the footrest rod 18, the rear wheels 14A and 14B are operated by the electric motors 15A and 15B. Each rotates, and the electrically assisted seated walking vehicle 10 can be automatically driven in the direction opposite to that at the time of pushing. [Selection diagram] Fig. 1

Description

The present invention relates to a hand-push type electrically assisted seated walking vehicle capable of rotating wheels by using an electric motor as needed.

As a wheelbarrow-type walking aid used by elderly people who can walk independently to carry goods or take a break, for example, a walking vehicle (silver car) described in Patent Document 1 or the like is known.

In the walking vehicle of Patent Document 1, a pair of left and right front wheel legs with front wheels pivotally supported at the lower ends, a pair of left and right rear wheel legs with rear wheels pivotally supported at the lower ends, and a handle are supported at the upper ends. The left and right handle columns, the stools provided on each front wheel leg to sit when the user is tired, and the basket provided between each rear wheel leg to store luggage. It is prepared.

At the time of use, luggage is stored in a basket, and the user walks while holding the steering wheel and pushing the walking vehicle. When the user is tired, sit on the seat and take a rest.

Japanese Unexamined Patent Publication No. 2012-56537

However, in the walking vehicle of Patent Document 1, there is nothing that assists the walking power of the user when the user is tired of pushing and running, climbs a slope, or when the luggage is heavy.

Therefore, as a result of diligent research, the inventor placed a pair of left and right electric motors to drive the rotation of the pair of left and right rear wheels of the walking vehicle, and used them seated on the seat near each rear wheel of the frame body. It was found that the above-mentioned problems can be solved by arranging a footrest member on which a person can rest his / her foot so that the user can be placed on the foot and automatically run when the user is tired of pushing the vehicle. Completed the idea.

In the present invention, the ship is regarded as such a conventional problem, and it is possible to assist the user in walking, reduce fatigue during walking, and perform automatic driving with the user on board. The purpose is to provide a seated pedestrian vehicle.

The present invention according to claim 1 includes a frame main body in which a pair of left and right handle portions are arranged at an upper end portion, and a pair of left and right front wheels and rear wheels arranged at a lower end portion of the frame main body. This is an electrically assisted seated pedestrian vehicle that allows the user to hold the handle and push it by hand and automatically drive it. A foldable seating portion on which the user sits when tired, and a footrest member arranged near each rear wheel of the frame body on which the user seated on the seating portion rests both feet. A switch for rotationally driving each electric motor provided on the frame body including the handle portion, and a state in which the user sits on the stool portion and puts both feet on the footrest member. The electrically assisted seated pedestrian vehicle is provided with a control unit that automatically travels the electrically assisted seated pedestrian vehicle in a direction opposite to the hand pushing direction by each electric motor by inputting a switch. be.

Only each rear wheel is rotationally driven by the electric motor.
Further, the traveling speed of the electrically assisted seated walking vehicle by the electric motor is also arbitrary. For example, the speed may be about 4 km / h.
The frame body may be compact and foldable.
The installation position of the footrest member is not limited as long as it is near each rear wheel of the frame body. For example, it may be directly above the corresponding rear wheel.

The type of switch is not limited. For example, in addition to a slide type and a push button type, a lever operation type and a touch sensor type may be used.
Further, the mounting location of the switch is arbitrary as long as it is the frame body including at least one handle portion.

The present invention according to claim 2 is the electrically assisted seated walking vehicle according to claim 1, wherein a bag is provided on the front side of the frame body.
The material, shape, size, etc. of the bag are arbitrary.

The present invention according to claim 3 is the electrically assisted seated walking vehicle according to claim 1, wherein a seat belt is attached to the seat portion.

According to the fourth aspect of the present invention, the footrest member is composed of a long plate or a long bar laid horizontally between the vicinity of each rear wheel of the frame body. The electrically assisted seated walking vehicle according to claim 1, wherein the length of the handle portion is 30 cm to 40 cm, and the depth of the seat portion is 35 cm to 45 cm.

According to the first aspect of the present invention, the user holds the handle portion and walks while pushing the electrically assisted seated walking vehicle by hand.
At that time, when the user gets tired while walking, the folded stool can be returned to the horizontal position to sit on it, and both feet can be placed on the footrest members arranged near each rear wheel to rest. ..

If the user wants to self-propell the electrically assisted seated walking vehicle while sitting on the seat, the user inputs and operates the switch while sitting with both feet on the footrest member. As a result, at the command of the control unit, each electric motor rotates (reverses) each rear wheel in the direction opposite to the direction of rotation (forward rotation) at the time of hand pushing. Therefore, the walking vehicle can be automatically driven in the direction opposite to the pushing direction while the user is seated.
When the user makes the walking vehicle self-propelled while sitting, it is also important to put both feet on the pair of left and right footrest members.

Also, here, because we adopted a configuration that sits on the seat in the backward direction opposite to the hand pushing direction and automatically travels backward, there are a pair of left and right handle parts on both sides when self-propelled, and these are used as armrests. It is also possible to do. Moreover, when the switches are arranged on each handle portion, the operability of each switch during self-propelling is also good.

In particular, according to the invention according to claim 2, the luggage can be stored in a bag, and the user can walk while holding the handle portion and pushing the electrically assisted seated walking vehicle by hand.

Further, according to the third aspect of the present invention, the user seated on the seat can firmly fix his / her body to the electrically assisted seated walking vehicle by using the seat belt.
As a result, it is possible to prevent the user from slipping off the seat and falling during rest.

Further, according to the invention according to claim 4, as the footrest member, from one long plate material horizontally laid between the vicinity of each rear wheel of the frame body or one long bar material. Therefore, the user can put both feet on the desired position of the horizontally long footrest member.
Further, since the length of the handle portion is set to 30 cm to 40 cm, the grip position of the handle portion is further rearward of the frame body. This makes it easier for even large users to walk.
In addition, since the depth of the stool is 35 cm to 45 cm, even a large user can easily sit down.

It is a perspective view from the front of the electric assist seating type walking vehicle which concerns on Example 1 of this invention. It is a perspective view from the side of the electric assist seating type walking vehicle which concerns on Example 1 of this invention. It is a block diagram of the control part which constitutes a part of the electric assist seating type walking vehicle which concerns on Embodiment 1 of this invention. It is a side perspective view which shows the self-propelled state of the electric assist seating type walking vehicle which concerns on Example 1 of this invention.

Hereinafter, an embodiment of this invention will be specifically described.

As shown in FIGS. 1 and 2, in the electrically assisted seated pedestrian vehicle (which may be simply referred to as a pedestrian vehicle) 10 according to the first embodiment of the present invention, the left side handle portion 11A and the right side handle portion 11B are at the upper end portions. Left-side electric motor (electric motor) that rotationally drives the arranged frame main body 12, each pair of left and right front wheels 13 and rear wheels 14 arranged at the lower end of the frame main body 12, and the rear wheels 14A and 14B, respectively. The 15A and the right side electric motor (electric motor) 15B are provided on the rear side of the frame body 12 so as to be foldable (undulating), and are attached to the stool portion 16 and the stool portion 16 to be seated when the user is tired. A horizontally long metal footrest rod (footrest member) 18 that is laid horizontally between the seat belt 17 and the upper part of each rear wheel 14 and on which the user sitting on the stool 16 rests his / her foot. It is provided on the front side of the frame main body 12 and includes a bag arranging portion 21 in which a bag 20 for storing luggage is arranged. In addition to the bag 20, a battery 19 of the electric motors 15A and 15B and a control unit A for controlling the rotation of the electric motors 15A and 15B are mounted on the bag mounting unit 21.

Hereinafter, these components will be specifically described.
The frame body 12 is joined to a pair of left and right steering frames 22 connected by a connecting frame 22a extending downward from the handle portions 11A and 11B and extending in the left-right direction between the upper portions, and a lower end portion of each steering frame 22. The corresponding front wheels 13 are rotatably connected to each joint 23 via a horizontal pin 25 with a pair of left and right front leg frames 24 pivotally supported at the lower ends, and correspond to each other. The rear wheel 14 has a rear leg frame 26 pivotally supported at the lower end.

Each of the handle portions 11A and 11B is a long object having a length of 35 cm (generally 20 cm). Both the handle portions 11A and 11B are provided with a left side switch 27A and a right side switch 27B for rotationally driving the electric motors 15A and 15B via the control unit A.
Each front wheel 13 is a double-wheel type that can rotate around a vertical axis connected to the lower end portion of the corresponding front leg frame 24.
Further, between the lower ends of each rear leg frame 26, a footrest rod 18 laid horizontally is arranged above the rear wheels 14.

Each rear leg frame 26 is rotatably supported by each steering frame 22 so as to be foldable with respect to the front leg frame 24 around each horizontal pin 25.
Further, between the left and right steering frames 22, a plate-shaped stool portion 16 that is rotatably converted into an undulating position that allows seating and an upright position that cannot be seated is rotatably supported. The size of the stool portion 16 is a large size with a width of 35 cm and a depth of 40 cm (generally 30 cm).

Further, the lower end of the rear leg frame 26 is provided so as to be in contact with and detachable from the outer peripheral surfaces of the left and right rear wheels 14A and 14B, and when the brake lever 28 provided on each of the handle portions 11A and 11B is operated. A brake pad 29 that brakes the left and right rear wheels 14A and 14B by pressure contact with the outer peripheral surface thereof is rotatably supported via the arm 30.
The back arrangement portion 21 has a gate-shaped hook frame (not shown) on which the back side of the bag 20 is hooked, and a mounting shelf 32 on which the battery 19 is mounted.

Here, the control unit A will be specifically described with reference to the block diagram of FIG.
The control unit A has a central processing unit (CPU) 33, and on the input side thereof, a left switch 27A provided on the left handle portion 11A and a right switch 27B provided on the right handle portion 11B are provided. Each is connected.

On the other hand, on the output side of the central processing unit 33, the electric motors 15A and 15B and the electric motors 15A and 15B are rotationally driven at a predetermined rotational speed during automatic driving to automatically drive the pedestrian vehicle 10 backward. The self-propelled control means 35 is connected to each other.

Next, a method of using the electrically assisted seated walking vehicle 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
As shown in FIGS. 1 and 2, when the electrically assisted seated walking vehicle 10 is used by hand, the user grasps the handle portions 11A and 11B and pushes the walking vehicle 10 forward (in the direction of the arrow in FIG. 2). Walk.

Here, when the user gets tired while walking, the stool portion 16 folded on the back side of the frame main body 12 can be tilted horizontally to sit on it, and both feet can be placed on an arbitrary position of the footrest bar 18 to rest. Yes (see Figure 4).
Further, when the user is very tired, the walking vehicle 10 can be automatically driven while sitting on the seat portion 16.
That is, when the user turns on the left side switch 27A or the right side switch 27B arranged on the handle portions 11A and 11B while sitting, the input signal is sent to the self-propelled control means 35 of the control unit A. After that, based on the command from the self-propelled control means 35, the electric motors 15A and 15B are rotationally driven to rotate the rear wheels 14A and 14B in the direction opposite to the push direction. As a result, the walking vehicle 10 carrying the user automatically travels backward (in the direction of the arrow in FIG. 4).

As described above, when the user self-propells the electrically assisted seated walking vehicle 10 in the seated state, it is also important to put both feet on the footrest rod 18.
At that time, by wearing the seat belt 17, the user's body is fixed to the electrically assisted seated walking vehicle 10. This makes it possible to prevent injuries or the like due to the user slipping off while sitting.
Further, since one horizontally long footrest rod 18 is laid horizontally above each of the rear wheels 14A and 14B, the user seated on the stool portion 16 puts both feet on the footrest rod 18. You can rest. Although one horizontally long footrest rod 18 is adopted here, the present invention is not limited to this, and for example, one horizontally long plate material may be used.

Further, as shown in FIG. 3, since the lengths of the handle portions 11A and 11B are as long as 35 cm, the grip positions of the handle portions 11A and 11B are further rearward than the frame main body 12. This makes it easier for even large users to walk.
In addition, since the depth of the stool portion 16 is set to 40 cm and made into a large size, even a large user can easily sit down.
Further, as the footrest rod 18, one long metal rod material horizontally laid between the rear wheels 14A and 14B of the frame main body 12 is adopted, so that the user can put both feet on the horizontally long footrest rod. It can be placed in 18 favorite positions.

Further, here, the user sits backward on the stool portion 16 arranged on the rear side of the frame main body 12, and both feet are placed on the footrest rods 18 and arranged on the handle portions 11A and 11B. The left and right switches 27A and 27B are manually input so that they can run on their own.
Therefore, it is possible to use the handle portions 11A and 11B that were grasped by both hands during the hand-pushing run as armrests, and the hand backwards, which is a drawback when the stool portion 16 is arranged on the front side of the frame body 12. It is not necessary to perform the dangerous and troublesome switch operation of extending the left and right switches 27A and 27B arranged on the handle portions 11A and 11B.
That is, in the electrically assisted seated walking vehicle 10, since the switches 27A and 27B are arranged on the handle portions 11A and 11B, the switching operation during self-propelled operation in the backward seated state becomes easy.

Further, when the electrically assisted seated walking vehicle 10 is stored, the seat portion 16 is raised and folded, and then the rear leg frame 26 is folded with respect to the front leg frame 24. As a result, the electrically assisted seated walking vehicle 10 becomes compact, and the storage space thereof can be reduced.

The electrically assisted seated walking vehicle of this invention is not only a hand-pushed walking vehicle, but also can perform automatic driving, and because it is lightweight, it can be handled by one person and is a useful technology for evacuation in the event of a disaster. be.

10 Electric assist seated walking vehicle 11A Left handle (handle)
11B Right handle part (handle part)
12 Frame body 13 Front wheel 14A Left rear wheel (rear wheel)
14B Right rear wheel (rear wheel)
15A Left side electric motor (electric motor)
15B Right side electric motor (electric motor)
16 Sit 17 Seat belt 18 Foot rest rod (foot rest member)
20 Bag 27A Left side switch (switch)
27B Right switch (switch)
35 Self-propelled control means A control unit

Claims (4)

A frame body with a pair of left and right handles arranged at the upper end,
An electrically assisted seated walking vehicle provided with a pair of left and right front wheels and rear wheels arranged at the lower end of the frame body, and the user can hold the handle and push the vehicle by hand and automatically drive the vehicle. ,
A plurality of electric motors for rotationally driving each of the rear wheels,
A foldable seat on the back side of the frame body to sit on when the user is tired.
A footrest member that is arranged near each rear wheel of the frame body and on which the user sitting on the stool rests his / her feet.
A switch provided on the frame body including the handle portion for rotationally driving each electric motor, and a switch.
When the user sits on the stool and puts both feet on the footrest member, the switch is input and operated, so that the electrically assisted seated walking vehicle is driven by each of the electric motors in the direction opposite to the pushing direction. An electrically assisted seated walking vehicle characterized by having a control unit that automatically travels in the direction. The electrically assisted seated walking vehicle according to claim 1, wherein a bag is provided on the front side of the frame body. The electrically assisted seated walking vehicle according to claim 1, wherein a seat belt is attached to the seat. The footrest member is made of a long plate or a long bar laid horizontally between the rear wheels of the frame body.
The length of the handle portion is set to 30 cm to 40 cm.
The electrically assisted seated walking vehicle according to claim 1, wherein the depth of the sitting portion is 35 cm to 45 cm.

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