Mobility

Abstract

To provide a mobility capable of suppressing a resistance when towing is carried out.SOLUTION: A mobility includes: a steering column that includes a handle; a first footrest member provided so as to be rotatable relative to the steering column; and a second footrest member connected to the first footrest member via a connection portion so as to be rotatable. The mobility includes: a first wheel placed at the forward side in the travelling direction relative to the connection portion; and a second wheel placed at the backward side in the travelling direction relative to the connection portion. The mobility is capable of selectively forming: an evolved state in which the first footrest member and the second footrest member are evolved so as to be arranged side by side in the travelling back-and-forth direction; and a folded state in which the first footrest member and the second footrest member are folded in such a way that the connection portion is located upwardly relative to the evolved state. The second wheel is a driven wheel that is driven by a drive source, and the first wheel is a freely rotating wheel that is not driven by the drive source.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to mobility. [Background technology]

[0002] Patent Documents 1 and 2 disclose foldable kick scooters. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-042958 [Patent Document 2] International Publication No. 2021 / 063433 Summary of the Invention [Problem to be solved by the invention]

[0004] In such a kick scooter, when the wheels are driven by a driving source, there is a problem in that resistance increases when the wheels are rolled and pulled.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a mobility device that can reduce resistance when towing. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided a mobility device comprising: a steering column having a handle; a first footrest member rotatably mounted relative to the steering column; a second footrest member rotatably connected to the first footrest member via a connection part; a first wheel arranged forward in the direction of travel from the connection part; and a second wheel arranged rearward in the direction of travel from the connection part; the mobility device can selectively be formed into an unfolded form in which the first footrest member and the second footrest member are unfolded so that they are aligned in the fore-and-aft direction of travel; and a folded form in which the first footrest member and the second footrest member are folded so that the connection part is positioned higher than in the unfolded form; the second wheel is a drive wheel driven by a drive source; and the first wheel is a free-spinning wheel that is not driven by the drive source. [Effects of the Invention]

[0007] According to one aspect of the present invention, when the mobility vehicle is towed in the folded state, it is tilted forward in the direction of travel, and the first wheel, which is located forward in the direction of travel from the connection part connecting the first footrest member and the second footrest member, rolls on the ground surface while in contact with the ground surface.

[0008] The first wheel that rolls on the ground surface is a free-spinning wheel that is not driven by a drive source, which allows the mobility vehicle to reduce resistance during towing compared to when the second wheel rolls as a drive wheel driven by a drive source. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a side view showing a mobility according to this embodiment. [Figure 2] FIG. 2 is a plan view showing the mobility according to this embodiment. [Figure 3] FIG. 3 is a side view showing the state in which the mobility according to this embodiment is folded. [Figure 4] FIG. 4 is a side view showing the folded state of the mobility according to this embodiment. [Figure 5] FIG. 5 is a plan view showing the flap portion of the mobility according to this embodiment in an expanded and unfolded state. [Figure 6] FIG. 6 is a plan view showing the mobility according to this embodiment in a storage mode. [Figure 7] FIG. 7 is a diagram showing an example in which the mobility according to this embodiment is placed at an entrance. [Figure 8] FIG. 8 is a block diagram showing mobility according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] <Embodiment> Hereinafter, a mobility 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0011] FIG. 1 is a side view showing a mobility 10 according to this embodiment. FIG. 2 is a plan view showing the mobility 10 according to this embodiment. FIG. 3 is a side view showing the mobility 10 according to this embodiment being folded. FIG. 4 is a side view showing the folded form F of the mobility 10 according to this embodiment. FIG. 5 is a plan view showing a state in which the flap portion 110 of the mobility 10 according to this embodiment is expanded and unfolded. FIG. 6 is a plan view showing a state in which the mobility 10 according to this embodiment is in a storage mode M30. FIG. 7 is a diagram showing an example in which the mobility 10 according to this embodiment is placed at an entrance 120.

[0012] As shown in Figures 1 to 7, the mobility 10 of this embodiment is a kick scooter developed with the concept of "going out together" and is configured so that it can be used as a carry cart for purposes other than riding.

[0013] (Steering column) The mobility 10 is equipped with a steering column 30 having a handle 20. The steering column 30 is formed of, for example, a cylindrical member. The handle 20 is provided at one end of the steering column 30. The handle 20 is configured to be extendable and retractable.

[0014] (handle) Specifically, the handle 20 is composed of a left grip portion 22 and a right grip portion 24 that protrude laterally from the steering column 30 (see FIG. 2). Each of the grip portions 22, 24 is composed of a small-diameter cylindrical portion 26A, a medium-diameter cylindrical portion 26B, and a large-diameter cylindrical portion 26C.

[0015] Each of the gripping portions 22, 24 has a small diameter cylindrical portion 26A fixed to the steering column 30. A medium diameter cylindrical portion 26B is slidably fitted onto the small diameter cylindrical portion 26A. A large diameter cylindrical portion 26C is slidably fitted onto the medium diameter cylindrical portion 26B.

[0016] This allows each gripping portion 22, 24 to be selectively formed into an extended state in which each cylindrical portion 26A, 26B, 26C is slid and extended to a predetermined length (see Figure 2), or a contracted state in which each cylindrical portion 26A, 26B, 26C is slid and overlapped (see Figures 5 and 6).

[0017] (Towing handle) A towing handle 40 is provided at the upper end, which serves as one end of the steering column 30, for towing when the mobility 10 is in the folded configuration F, which will be described later. The towing handle 40 protrudes from the steering column 30 in the same direction as the forward direction S (forward traveling direction TF) when the mobility 10 is traveling when the mobility 10 is in the unfolded configuration D, which will be described later (see FIG. 1). The towing handle 40 also protrudes in the towing direction K when the mobility 10 is towed in the folded configuration F, which will be described later (see FIG. 4).

[0018] 2, the towing handle 40 includes a rod-shaped member bent into a U-shape. The handle portion of the towing handle 40 has a first extending portion 40A and a second extending portion 40B that are spaced apart from each other, and a connecting portion 40C that connects one end of the first extending portion 40A to one end of the second extending portion 40B.

[0019] 2, the other end of the first extending portion 40A and the other end of the second extending portion 40B that make up the handle portion of the towing handle 40 are fixed to the steering column 30. In this way, the towing handle 40 is fixed to the steering column 30, and therefore has superior durability compared to, for example, a case in which the towing handle 40 is provided so as to be able to be pulled out from the steering column 30.

[0020] The towing handle 40 has a ring-shaped portion 44 that surrounds the U-shaped handle portion and the inner space of the steering column 30 to which the handle portion is fixed. This makes it possible to restrain the mobility 10 to a fixed location, for example, by passing a wire lock (not shown) through the ring-shaped portion 44 and fixing the wire lock to the fixed location.

[0021] (Cup holder) 1 and 4, a cup holder 32 that protrudes rearward (TR) in the direction of travel is provided on the steering column 30 at the bottom of the handlebars 20. The cup holder 32 can hold a plastic bottle, a canned bottle, or a tumbler 32A. The cup holder 32 constitutes a luggage holding member that can hold luggage.

[0022] The holding space H for the cup holder 32 to hold luggage such as a tumbler 32A and the towing handle 40 protrude in opposite directions in the forward / rearward direction TFR of the mobility 10.

[0023] (hook) As shown in FIG. 1, a hook 34 protruding rearward in the traveling direction TR is provided on the steering column 30 at the bottom of the cup holder 32. Luggage N or the like can be hung on the hook 34. The hook 34 constitutes a luggage holding member capable of holding the luggage N.

[0024] The holding space H for the luggage N by the hook 34 and the towing handle 40 protrude in opposite directions in the forward / rearward direction TFR of the mobility 10.

[0025] (first axle) 1 and 2, a first wheel 50 is rotatably mounted on the other end of the steering column 30 via a suspension device (not shown). The first wheel 50 is a free-rotating wheel that is not driven by a drive source. The first wheel 50 is freely rotatable relative to the suspension device.

[0026] 2, the first wheel 50 is made up of a left-side first wheel 50A provided at one end of an axle (not shown) through which the suspension device is inserted, and a right-side first wheel 50B provided at the other end. Thus, the first wheel 50 is made up of multiple wheels.

[0027] In this embodiment, the first wheel 50 is configured with two wheels and the second wheel 90 (described later) is configured with one wheel, but the mobility 10 is not limited to this configuration. The mobility 10 may have the second wheel 90 configured with multiple wheels, or the first wheel 50 and the second wheel 90 may each be configured with multiple wheels.

[0028] In this way, by configuring at least one of the first wheel 50 or the second wheel 90 with multiple wheels, the mobility 10 has improved support stability in the folded form F described below compared to when the first wheel 50 and the second wheel 90 each consist of a single wheel.

[0029] (First footrest member) The suspension device has a first footrest member 60 made of a long plate material pivotally supported by a support shaft (not shown) extending along the axle of the first wheel 50. As a result, the first footrest member 60 is connected to the steering column 30 via the suspension device, and the first footrest member 60 is provided rotatably with respect to the steering column 30.

[0030] The first footrest member 60 rotates around a pivot point formed by the support shaft so that its rear end moves vertically in an arc. The first footrest member 60 rotates within a range of approximately 90 degrees relative to the steering column 30 (see FIGS. 1, 3, and 4). This allows the first footrest member 60 to be positioned in two states: one in which it extends rearward from the steering column 30 in the traveling direction (TR) (see FIGS. 1 and 2), and the other in which it extends along the steering column 30 (see FIGS. 4 to 6).

[0031] (Second foot rest member) A second footrest member 70 made of a long plate material is rotatably connected to the first footrest member 60 via a connecting portion 80 .

[0032] The connection part 80 includes a support shaft (not shown) that supports the second footrest member 70 on the first footrest member 60. This support shaft extends in the width direction of each footrest member 60, 70, and the second footrest member 70 rotates around the support shaft such that its front end moves in an arc in the vertical direction as the first footrest member 60 rotates (see FIGS. 1, 3, and 4).

[0033] The mobility 10 can form an unfolded form D in which the first footrest member 60 and the second footrest member 70 are unfolded so that they are aligned in the longitudinal direction TFR, with the second footrest member 70 arranged in the longitudinal direction of the first footrest member 60 (see FIGS. 1 and 2). The mobility 10 can also form a folded form F in which the first footrest member 60 and the second footrest member 70 are folded so that the connection portion 80 is positioned higher than in the unfolded form D (see FIGS. 4 to 6). This allows the mobility 10 to selectively form either the unfolded form D or the folded form F.

[0034] The connecting part 80 has a rubber plate (not shown) that applies a biasing force to the first footrest member 60 and the second footrest member 70 to maintain the unfolded form D. The connecting part 80 also has a locking structure (not shown) that prevents the connecting part 80 from being displaced downward in the unfolded form D.

[0035] (second wheel) A second wheel 90 is provided on the end of the second footrest member 70 opposite the connection part 80. As a result, the mobility 10 is provided with the first wheel 50 arranged on the forward TF side of the connection part 80 in the direction of travel, and the second wheel 90 arranged on the rear TR side of the connection part 80 in the direction of travel.

[0036] The second wheel 90 and the first wheel 50 have different diameters. The first outer diameter 50D of the first wheel 50 is larger than the second outer diameter 90D of the second wheel 90 (see FIGS. 1, 2, and 4). The first wheel 50 arranged in the towing direction K has a larger diameter than the second wheel 90, making it easier to climb over steps when towing.

[0037] The second wheel 90 is a drive wheel driven by a drive source. The drive source includes, for example, a motor 302 (see FIG. 8 ) and a reducer (not shown) that reduces the rotation of the motor 302 using a reduction gear and outputs the reduced rotation from an output shaft. The output shaft of the reducer is connected to the second wheel 90.

[0038] The motor 302 may be disposed, for example, at a position adjacent to the second wheel 90, or may be configured as a so-called in-wheel motor disposed within the second wheel 90.

[0039] The battery 310 (see FIG. 8) that supplies power to the motor 302 can be detachably attached to the bottom of the second footrest member 70, or can be placed inside the cylindrical steering column 30. When the battery 310 is attached to the bottom of the second footrest member 70, it is removed from the second footrest member 70 and charged. When the battery 310 is placed inside the steering column 30, it is charged using a charger connector (not shown) provided on the steering column 30. By providing the battery 310 in this way, it is possible to provide a charging port 102 for charging the mobile terminal 100, for example, at one end of the steering column 30 (see FIG. 4).

[0040] (flap part) The mobility 10 has a flap portion 110 as a luggage holding member that unfolds toward one side in the forward-rearward direction TFR when in the folded configuration F (see FIGS. 4 and 5).

[0041] More specifically, a flap portion 110 is provided on one surface 70A of the second footrest member 70. As a result, the flap portion 110 is disposed on the side of the second footrest member 70, which is a member having the second wheel 90, which is the wheel with the smaller diameter between the first wheel 50 and the second wheel 90.

[0042] One surface 70A of the second footrest member 70 on which the flap portion 110 is provided faces upward in the unfolded form D (see FIG. 1). Also, one surface 70A of the second footrest member 70 on which the flap portion 110 is provided faces rearward in the traveling direction TR, which is opposite to the pulling direction K in the folded form F (see FIG. 4).

[0043] The flap portion 110 is formed in a rectangular plate shape. In the unfolded form D, the edge of the flap portion 110 on the rear TR side in the traveling direction is supported by one surface 70A of the second footrest member 70 via a flap hinge 110A (see FIGS. 1 and 2).

[0044] The flap hinge 110A forms a closed state (see FIGS. 1 and 2) in which the flap portion 110 extends along one surface 70A of the second footrest member 70. The flap hinge 110A also forms an open state (see FIGS. 4 and 5) in which the flap portion 110 extends in a direction intersecting the one surface 70A of the second footrest member 70. This allows the flap hinge 110A to selectively form a closed state or an open state. In the folded form F, the flap portion 110 is maintained in the open state in which it extends in a direction intersecting the one surface 70A of the second footrest member 70 due to its own weight.

[0045] In the folded configuration F, the towing handle 40 and the flap portion 110 are arranged on opposite sides of each other in the forward / rearward direction TFR.

[0046] The flap portion 110 unfolds in the rearward direction of travel TR, which is opposite to the towing direction K in which the mobility 10 is towed when in the folded configuration F (see FIG. 4). In the folded configuration F, the towing handle 40 protrudes in the towing direction K, so the towing handle 40 and the flap portion 110 protrude in opposite directions in the folded configuration F. Also, in the folded configuration F, the holding space H for luggage N provided by the flap portion 110 and the towing handle 40 protrude in opposite directions in the forward-backward direction TFR of the mobility 10.

[0047] 5, the flap portion 110 has a rectangular main flap 112A supported via a flap hinge 110A on one surface 70A of the second footrest member 70. The flap portion 110 has a rectangular left sub-flap 112C supported via a left hinge 112B on one side edge of the main flap 112A. The flap portion 110 has a rectangular right sub-flap 112E supported via a right hinge 112D on the other side edge of the main flap 112A.

[0048] The left hinge portion 112B can selectively form a closed state in which the left sub-flap 112C is arranged on the main flap 112A, or an open state in which the left sub-flap 112C is arranged on an extension of the main flap 112A. The right hinge portion 112D can selectively form a closed state in which the right sub-flap 112E is arranged on the main flap 112A, or an open state in which the right sub-flap 112E is arranged on an extension of the main flap 112A.

[0049] By opening the left sub-flap 112C and the right sub-flap 112E, the flap portion 110 can be expanded and deployed in a direction intersecting with the forward-rearward direction TFR. By closing the left sub-flap 112C and the right sub-flap 112E, the sub-flaps 112C and 112E are stacked on top of each other and overlaid on the main flap 112A.

[0050] In this embodiment, the flap portion 110 can be expanded and deployed by opening the left sub-flap 112C and the right sub-flap 112E, but the configuration of the flap portion 110 is not limited to this. For example, the flap portion 110 may be expanded and deployed by providing a retractable slide plate (not shown) on the main flap 112A.

[0051] When the mobility 10 is in the unfolded form D, it enters a traveling mode M10 in which a user can move around by riding on each footrest member 60, 70 (see FIGS. 1 and 2). When the mobility 10 is in the folded form F (see FIGS. 4 and 5) by pulling up the connecting portion 80 (see FIG. 3), it enters a carry mode M20 in which a user can place luggage N on the unfolded flap portion 110 and tow it.

[0052] Furthermore, when the mobility 10 is in the folded form F, it can be placed in a compact storage mode M30 by closing the flap portion 110 and retracting the grip portions 22, 24 of the handle 20 (see FIG. 6). In this state, the mobility 10 can be placed upright in the entrance 120 with the first wheel 50 and the second wheel 90 on the ground (see FIG. 7), so it does not get in the way when not in use and is easy to carry when in use.

[0053] (Fixing parts) As shown in FIG. 4, the mobility 10 includes a fixing belt 142 as a fixing member capable of fixing luggage N placed in the holding space H of the flap portion 110 when in the folded form F.

[0054] More specifically, a belt receiving opening 140 is provided on one side surface 70C of the second footrest member 70. A fastening belt 142 serving as a fastening member for fastening luggage N placed on the flap portion 110 is received inside the belt receiving opening 140 so as to be able to be pulled out.

[0055] The fixing belt 142 has, for example, a belt tongue (not shown) at its tip, which can be releasably engaged with an engaging portion (not shown) provided on the other side surface of the second footrest member 70.

[0056] In this embodiment, the fixing belt 142 is shown as a fixing member capable of fixing the luggage N in the folded form F, but the fixing member capable of fixing the luggage N is not limited to the fixing belt 142. The fixing member capable of fixing the luggage N may be configured as, for example, a hook for hooking the luggage N placed on the flap portion 110.

[0057] (Block diagram) FIG. 8 is a block diagram showing the mobility 10 according to this embodiment.

[0058] The mobility 10 includes a controller 300. The controller 300 controls a motor 302 as a drive source for driving the second wheel 90.

[0059] The controller 300 is configured with a microcomputer equipped with a CPU, RAM, ROM, an input / output interface, etc. The CPU of the controller 300 reads and executes programs stored in the ROM to perform various processes. The controller 300 can also be configured with multiple microcomputers.

[0060] Controller 300 operates on power from battery 310. A signal is input to controller 300 from input unit 312. Input unit 312 is configured, for example, by an accelerator lever (not shown) provided on steering wheel 20. Input unit 312 outputs a signal to controller 300 according to the amount of operation of the accelerator lever.

[0061] The controller 300 outputs a drive signal corresponding to the signal from the input unit 312 to the drive unit 314. The drive unit 314 controls the power supplied from the battery 310 to the motor 302 based on the drive signal from the controller 300.

[0062] As a result, when the accelerator lever of the mobility 10 is operated, power corresponding to the amount of operation of the accelerator lever is supplied to the motor 302, and the mobility 10 can travel at a speed corresponding to the amount of operation of the accelerator lever.

[0063] (Action and effect) The main effects of the mobility 10 configured as above will now be summarized.

[0064] (1) The mobility 10 includes a steering column 30 having a handle 20, a first footrest member 60 rotatably mounted on the steering column 30, and a second footrest member 70 rotatably connected to the first footrest member 60 via a connecting portion 80. The mobility 10 includes a first wheel 50 disposed forward (TF) of the connecting portion 80 in the direction of travel, and a second wheel 90 disposed rearward (TR) of the connecting portion 80 in the direction of travel. The mobility 10 can selectively form an unfolded form D in which the first footrest member 60 and the second footrest member 70 are unfolded so that they are aligned in the fore-aft direction TFR, and a folded form F in which the first footrest member 60 and the second footrest member 70 are folded so that the connecting portion 80 is positioned higher than in the unfolded form D. The second wheel 90 is a drive wheel driven by a driving source (302), and the first wheel 50 is a free-spinning wheel that is not driven by the driving source (302).

[0065] According to this embodiment, the mobility 10 is tilted forward in the traveling direction TF when being towed in the folded form F. Then, the first wheel 50, which is disposed forward in the traveling direction TF with respect to the connection part 80 connecting the first footrest member 60 and the second footrest member 70, rolls on the ground surface G while in contact with the ground surface G (see FIG. 4).

[0066] The first wheel 50 that rolls on the contact surface G is a free-spinning wheel that is not driven by the motor 302 that constitutes the drive source. Therefore, the mobility 10 can reduce the rotational resistance compared to when the second wheel 90, which serves as a drive wheel driven by the drive source, rolls, thereby making it possible to suppress resistance during towing.

[0067] As a result, the mobility 10 can be easily towed, for example, in places where it is not possible to drive, by rolling the first wheel 50 on the contact surface G. Therefore, this embodiment can provide a mobility 10 based on the concept of "going out together."

[0068] Furthermore, in the mobility 10 of this embodiment, the second wheel 90 is a drive wheel that is driven by a drive source, and the second wheel 90 has a large rotational resistance when not driven. This allows the mobility 10 to have improved upright stability when the first wheel 50 and the second wheel 90 are in an upright position with the wheel 50 and the wheel 90 in contact with the ground.

[0069] Furthermore, in the mobility 10 of this embodiment, a drive source is provided on the second wheel 90 of the first footrest member 60 on the rearward traveling direction TR side, which tends to be lighter than the forward traveling direction TF side where the steering column 30 is provided on the first footrest member 60. This improves the weight balance of the mobility 10 between the forward traveling direction TF side and the rearward traveling direction TR side, thereby making it possible to increase the self-standing stability of the mobility 10 in the folded form F.

[0070] (2) In the mobility 10, the first outer diameter dimension 50D, which is the diameter of the first wheel 50, is larger than the second outer diameter dimension 90D, which is the diameter of the second wheel 90.

[0071] In the mobility 10 of this embodiment, the first outer diameter 50D of the first wheel 50 constituting the front wheel is larger than the second outer diameter 90D of the second wheel 90 constituting the rear wheel. Therefore, when the mobility 10 is towed while tilting toward the forward traveling direction TF, the second wheel 90 constituting the drive wheel can be lifted off the contact surface G, thereby making it possible to suppress the rolling of the second wheel 90.

[0072] In addition, since the first wheel 50 constituting the front wheel has a larger diameter than the second wheel 90 constituting the rear wheel, it is easier to climb up steps when towing compared to when the first wheel 50 constituting the front wheel has a smaller diameter.

[0073] (3) The mobility 10 is provided with a towing handle 40 on the upper part of the steering column 30 .

[0074] In the mobility 10 of this embodiment, a user can tow the mobility 10 by gripping a towing handle 40 provided on the steering column 30.

[0075] This towing handle 40 is provided on the upper part of the steering column 30. This guides the user to grasp the towing handle 40 from the forward direction TF in the direction of travel, and the mobility 10 is towed in the forward direction TF where the first wheel 50, which is a free-spinning wheel, is provided.

[0076] Furthermore, the mobility 10 can be towed with the first wheel 50, which is a free-spinning wheel, rolling on the contact surface G while the second wheel 90, which is a drive wheel, is lifted off the contact surface G, thereby reducing resistance during towing and improving the ability to climb over bumps.

[0077] (4) In the mobility 10, at least one of the first wheel 50 and the second wheel 90 is configured with a plurality of wheels (50A, 50B).

[0078] The mobility 10 of this embodiment can improve support stability when upright in the folded form F compared to when the first wheel 50 and the second wheel 90 are all configured as a single wheel.

[0079] Furthermore, in the mobility 10 of this embodiment, the first wheels 50 are configured with a left first wheel 50A and a right first wheel 50B. For this reason, the forward traveling side TF, where the first wheel 50, the steering column 30, and the first footrest member 60 are located, tends to be heavier than the rear traveling side TR, where the second wheel 90 and the first footrest member 60 are located.

[0080] However, by providing a drive source on the second wheel 90 on the rearward traveling side TR, which is lighter than the forward traveling side TF, the weight balance between the forward traveling side TF and the rearward traveling side TR is improved. This allows the mobility 10 to have improved self-standing stability in the folded form F.

[0081] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments. [Explanation of symbols]

[0082] 10 Mobility 20 Handle 30 Steering column 40 Towing handle 50 First wheel 50A Left first wheel 50B Right side first wheel 50D First outer diameter 60 First footrest member 70 Second footrest member 80 Connection 90 Second wheel 90D Second outer diameter 302 Motor D Deployment form F Folded form TF forward direction TFR forward and backward direction TR backward direction of travel

Claims

1. a steering column having a handle; a first footrest member rotatably provided with respect to the steering column; a second footrest member rotatably connected to the first footrest member via a connecting portion; a first wheel disposed forward of the connection portion in the traveling direction; A second wheel arranged rearward in the traveling direction from the connection portion; Equipped with a deployed form in which the first footrest member and the second footrest member are deployed so as to be aligned in the front-rear direction of travel, and a folded form in which the first footrest member and the second footrest member are folded so that the connection portion is positioned higher than in the deployed form, The second wheel is a drive wheel driven by a drive source, and the first wheel is a free-spinning wheel not driven by the drive source. Mobility.

2. The mobility device according to claim 1, The diameter of the first wheel is larger than the diameter of the second wheel. Mobility.

3. The mobility device according to claim 1, A towing handle is provided on the top of the steering column. Mobility.

4. The mobility device according to claim 1, At least one of the first wheel or the second wheel is composed of a plurality of wheels, Mobility.

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