TWM650824U - Easy-to-turn mobile device - Google Patents

Abstract

An easy-to-turn mobile device includes a seat unit, a rear wheel unit, a front wheel unit, and a power unit. The seat unit includes a foldable base frame group that can be converted between an unfolded state and a folded state. The base frame group is available for riding in the unfolded state. In the folded state, the base frame group is The frame set folds. The rear wheel unit includes two rotatable rear rollers. The front wheel unit includes two handle groups rotatably arranged on the seat unit, and two front rollers respectively rotatably connected to the handle groups. Each handle group defines an axis and takes the axis as the axis. The axis essentially passes through the front roller, and the power unit is connected to the rear wheel unit and used to drive the rear rollers. After folding, the overall shape of the seat unit is flat and the axes pass through the front rollers, thereby achieving the effects of convenient storage and easy steering.

Description

Easy-to-turn mobile device

The present invention relates to a mobile device, in particular to an easy-to-turn mobile device.

Generally, existing mobile devices (such as electric wheelchairs) include a seat, two front wheels, two rear wheels, two operating rods rotatably provided on the seat and respectively connected to the front wheels, and a drive lever. A drive unit for the front wheels or the rear wheels, each operating rod extends along an axis, and each front wheel is located on one side of the axis. Power is provided by the drive unit so that the user can move when sitting on the seat, and The operating levers can be used to control the front wheels, thereby controlling the forward direction of the seat.

However, in order for the user to sit on it, the seat must have a certain size in both the width and depth directions to maintain sufficient seating space. In order to improve the user's comfort, the seating space must be enlarged, resulting in In addition, the weight of the front wheels produces a large moment of inertia, making steering difficult.

Therefore, the purpose of the present invention is to provide an easy-to-turn mobile device that is easy to store and easy to turn.

Therefore, the new easy-to-steer mobile device includes a seat unit, a rear wheel unit, a front wheel unit, and a power unit.

The seat unit includes a foldable base frame group that can be converted between an unfolded state and a folded state. The base frame group is available for riding in the unfolded state. In the folded state, the base frame group is The frame set folds.

The rear wheel unit is detachably provided on the seat unit and includes two rotatable rear rollers.

The front wheel unit includes two handlebar groups rotatably provided on the seat unit, two front rollers rotatably connected to the handlebar groups respectively, and one pivoted to the handlebar groups so that the handlebars A set of linkage rods that move together. The front rollers are located below the grip groups along an up and down axis. Each grip group defines an axis and rotates with the axis as the axis. The axis essentially passes through the front scroll wheel.

The power unit is connected to the rear wheel unit and used to drive the rear rollers.

The function of this new model is that the base frame group is foldable, so that the overall shape of the seat unit is flat after folding, and the axes pass through the front rollers to reduce the time required to operate the handle groups to rotate the direction. The moment of inertia makes it easy to store and turn.

Referring to Figures 1, 2, and 3, an embodiment of the new easy-to-steer mobile device includes a seat unit 2, a rear wheel unit 3, a front wheel unit 4, and a power unit 5.

The seat unit 2 includes a foldable base frame 21 and a seat cushion 22 detachably provided on the base frame 21 . The base frame group 21 has a front bracket 211 and a rear bracket 212 arranged oppositely along a front-rear axis X, a riding frame 213 swingably connected between the front bracket 211 and the rear bracket 212 for riding, a The lower bracket 214 is swingably connected between the front bracket 211 and the rear bracket 212, and a footrest 215 is swingably connected to the front bracket 211. The riding frame 213 is for the seat cushion 22 to be detachably provided. The lower bracket 214 is located below the riding frame 213 along an up-down axis Z. The front bracket 211 has a front side rod 216 extending along a left and right axial direction Y and for the seat frame 213 to be swingably connected, and two armrest rods 217 connecting both ends of the front side rod 216 and for the lower bracket 214 to be swingably connected. , and a pedal rod 218 spaced apart from the front side rod 216 along the up and down axis Z and extending along the left and right axis Y and connected to the armrest rods 217. The pedal rod 218 is for the footrest 215 to be swingably connected. .

The rear wheel unit 3 is detachably disposed on the seat unit 2 and includes a rear wheel frame 31 detachably disposed on the rear bracket 212 and two rear rollers 32 rotatably disposed on the rear wheel frame 31 .

Referring to Figures 2, 3, and 4, the front wheel unit 4 includes two handle groups 41 rotatably provided on the seat unit 2, two front rollers 42 respectively rotatably connected to the handle groups 41, and a A linking rod 43 is pivotally connected to the handle groups 41 to move the handle groups 41 together, and two buffer members 44 are respectively provided between the adapter portions 417 and the armrest bars 217 . The front rollers 42 are located below the handle groups 41 along the up-and-down axis Z. Each handle group 41 defines an axis L and rotates around the axis L, and has a handle set on the base frame. Set 21 and extend along the extension direction of the axis L. An extension rod 411, an operating lever 412 detachably connected to the top of the extension rod 411, and an extension rod 411, the linkage rod 43 and the corresponding front roller 42. The connecting piece 413 , the axis L substantially passes through the front roller 42 . In this embodiment, the buffer members 44 are springs. In other embodiments, other equivalent components that can reduce impact may also be used, such as polyurethane or rubber, but are not limited thereto.

Furthermore, each connecting member 413 has an adapter portion 417 connected to the corresponding bottom end of the extension rod 411, a pivot portion 416 connected to the adapter portion 417 and pivotally connected to the linking rod 43, and a pivot portion 416 connected to the connecting rod 43. The adapter portion 417 has an offset portion 418 located on one side of the axis L, and a rotating shaft portion 419 connected to the offset portion 418 and pivoted to the corresponding front roller 42. The axis L passes through the rotating shaft portion 419. The front roller 42 rotates with the rotating shaft portion 419 as an axis. Each operating lever 412 has a bent section 414 that is detachably connected to the extension rod 411 and partially bent, and a grip that is connected to the bent section 414 and located on one side of the axis L for holding. Paragraph 415.

The power unit 5 includes a driving group 51 disposed on the rear wheel frame 31 to provide power to drive the rear rollers 32 , a power supply group 52 disposed on the rear bracket 212 and electrically connected to the driving group 51 to provide electric energy. A transmission gear set 53 is provided on the rear wheel frame 31 and is driven by the driving group 51 and links the rear rollers 32, and a signal is connected to the driving group 51 and the power supply group 52 and is detachably provided on the grips. A controller for one of Group 41. The drive group 51 is a motor installed on the rear wheel frame 31. The speed change gear set 53 is used to change the rotation speed of the drive group 51 to the rear rollers 32 to adjust the rotation speed and output of the rear rollers 32. In this embodiment, the controller connects the driving group 51 and the power supply group 52 via wireless connection signals. In other implementations, wired connection may also be used, but is not limited thereto.

Referring to Figures 1, 2, and 5, it is worth mentioning that the base frame set 21 can be transformed between an unfolded state (see Figure 1) and a folded state (see Figure 5). In the unfolded state, the seat frame 213 is arranged horizontally and can be used for riding and the seat cushion 22 . The front bracket 211 is spaced apart from the rear bracket 212 . In the folded state, the seat cushion 22 is detached from the seat frame 213 , the base frame set 21 is folded, and the front bracket 211 is adjacent to the rear bracket 212.

During operation, the user can switch the base frame group 21 to the unfolded state, and can set the seat cushion 22 to sit on the seat unit 2, and control the driving group 51 to generate power by operating the controller 54. The rear wheel unit 3, the seat unit 2 and the front wheel unit 4 are linked, and then by operating the handle groups 41, the front rollers 42 are rotated around the axes L respectively to adjust the forward direction, and The linking rod 43 is used to make the front rollers 42 rotate synchronously.

Compared with the existing mobile device, the new model is foldable through the base frame group 21, so that the overall shape of the seat unit 2 after folding is flat, reducing the occupied volume, and achieving the effect of convenient storage, and through the axes L uses the front rollers 42 to reduce the weight of components deviating from the axis L, so as to reduce the moment of inertia when operating the grip groups 41 in the rotation direction, thereby achieving the effect of easy steering.

To sum up, the new easy-to-turn mobile device of the present invention can indeed achieve the purpose of the new type.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this new patent.

2: Seat unit

21: Base frame group

211:Front bracket

212:Rear bracket

213: Ride frame

214:Lower bracket

215:pedal stand

216:Front side bar

217:Handrail

218:pedal lever

22:Cushion

3:Rear wheel unit

31:Rear wheel frame

32:Rear roller

4:Front wheel unit

41: Grip set

411:Extension rod

412: Operating lever

413: Connector

414: Bending section

415: Grip section

416: Pivot joint

417:Transfer department

418:Offset part

419:Rotating shaft part

42:Front roller

43: Linking rod

44:Buffer

5: Power unit

51:Driver group

52:Power pack

53:Transmission gear set

54:Controller

X: front and rear axis

Y: left and right axis

Z: up and down axis

L: axis

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view illustrating an embodiment of the new easy-to-turn mobile device of the present invention; Figure 2 is an exploded perspective view of this embodiment; Figure 3 is a side view illustrating a base frame assembly of this embodiment in an unfolded state; Figure 4 is a front view of the embodiment; and Figure 5 is a perspective view illustrating the base frame assembly in a folded state.

2: Seat unit

21: Base frame group

211:Front bracket

212:Rear bracket

213: Ride frame

214:Lower bracket

215:pedal stand

216:Front side bar

217:Handrail

218:pedal lever

22:Cushion

3:Rear wheel unit

31:Rear wheel frame

32:Rear roller

4:Front wheel unit

41: Grip set

419:Rotating shaft part

42:Front roller

43: Linking rod

44:Buffer

5: Power unit

51:Driver group

52:Power pack

53:Transmission gear set

54:Controller

X: front and rear axis

Y: left and right axis

Z: up and down axis

L: axis

Claims (10)

An easy-to-turn mobile device includes: a seat unit, including a foldable base frame group, the base frame group can be converted between an unfolded state and a folded state, and the base frame group can be used in the unfolded state When riding, in the folded state, the base frame assembly is folded; a rear wheel unit is detachably provided on the seat unit and includes two rotatable rear rollers; a front wheel unit includes two rotatable rear rollers that are disposed on the seat The chair unit has a handle group, two front rollers that are rotatably connected to the handle groups, and a linking rod that is pivotally connected to the handle groups to enable the handle groups to move together. The front rollers are An upper and lower axis is located below the handle groups. Each handle group defines an axis and rotates with the axis as the axis. The axis substantially passes through the front roller; and a power unit is connected to the rear wheel unit. and used to drive the rear rollers. The easy-to-turn mobile device as claimed in claim 1, wherein the base frame set has a front bracket and a rear bracket oppositely arranged along a front-rear axis, and a bracket swingably connected to the front bracket and the rear bracket. The rear wheel unit also includes a rear wheel frame that is detachably provided on the rear bracket. The rear wheel frame is rotatably provided for the rear rollers. In the unfolded state, the riding frame is The frame is arranged horizontally, and the front bracket is spaced apart from the rear bracket. In the folded state, the front bracket is adjacent to the rear bracket. The easy-to-steer mobile device as claimed in claim 2, wherein the front bracket has a front side rod connected to the riding frame, and two front side rods connected to the front side rod for the Handrail bar set by equal grip bar set. The easily steerable mobile device according to claim 2, wherein the seat unit further includes a seat cushion detachably provided on the riding frame. The easy-to-turn mobile device as claimed in claim 3, wherein the front bracket also has a pedal rod spaced apart from the front side rod along the up and down axial direction, and the base frame group also has a pedal rod swingably connected to the pedal rod. and a lower bracket of the rear bracket, and a footrest swingably connected to the pedal rod. The easily steerable mobile device as claimed in claim 1, wherein each handle group has an extension rod provided on the base frame group and extending along the extension direction of the axis, and an operation for detachably connecting the extension rod. rod, and a connecting piece connecting the extension rod, the linking rod and the corresponding front roller. The easy-to-turn moving device of claim 6, wherein each connecting member has an adapter portion connected to the extension rod, a pivot portion connected to the adapter portion and pivotally connected to the linking rod, and a connecting portion. The adapter part is an offset part located on one side of the axis, and a rotating shaft part connected to the offset part and pivoted on the corresponding front roller. The axis passes through the rotating shaft part, and the front roller uses the rotating shaft part. for axis rotation. The easy-to-steer mobile device according to claim 7, wherein the front wheel unit further includes two buffer members respectively disposed between the adapter parts and the base frame group. The easily steerable mobile device as claimed in claim 6, wherein each operating rod has a bending section detachably connected to the extension rod and partially bent, and a bending section connected to the bending section and located on the axis. The gripping section on the side is used for gripping. The easily steerable mobile device of claim 1, wherein the power unit includes a drive group that provides power to drive the rear rollers, and a power source that is disposed on the seat unit and electrically connected to the drive group to provide electrical energy. group, a signal connected to the driving group and the power group and a controller detachably provided on one of the handle groups, and a speed change gear set driven by the driving group and linked to the rear rollers.