Electric scooter

Abstract

A pair of steering wheels is arranged behind a rear wheel of the electric scooter driven in a standing mode and serves as a parking support. At the parking position, the handlebar rod is folded, the scooter can be pulled open with hands, and the steering wheel and the rear end of the deck frame are utilized to make contact with the ground to vertically stand. The scooter has a front wheel drive to assist it in starting from a stopped state without pedaling. A standing-sitting type driving electric scooter is an improvement of a standing driving type electric scooter. The chair is provided with a flat seat which is hinged to a pair of parallel supporting columns. The seat serves as the front of the standing deck of the standing drive. When the stand column ascends to be vertical, the seat is arranged to be in sitting type driving. A handlebar rod can be inclined and arranged at a required angle, so that comfortable driving is realized.

Description

Technical Field

[0001] The present invention relates to an electric scooter having a pair of tandem wheels and a foldable handlebar. Background Art

[0002] There are a variety of electric scooters with a pair of small tandem wheels and foldable handlebars on the market. All of them have excellent quality and performance. However, despite their compact structure and portability, none of them has gained popularity among the general public, as each type has its own disadvantages. Stand-up scooters are lightweight and suitable for young people to carry by hand, but hand carrying can only endure short distances. Some do provide a pair of small wheels to roll, saving energy, but setting to the rolling position takes time. In addition, all these stand-up scooters can only be enjoyed by a few young people who are keen on the thrill of driving. Some models offer both standing and sitting driving modes and are equipped with independent seats, which are more suitable for most people, especially ladies and the elderly. But they are relatively heavy and take time to set up in sitting driving. In addition, they cannot be taken on public transportation that many working people rely on for daily travel. Summary of the invention

[0003] There is a great need to improve existing electric scooters. The most needed improvement is to create a scooter that can be pulled away and stand vertically on the ground in the parking position. In addition, the scooter should provide both stand-up and sit-down drive modes and can be quickly converted, so that more people can take advantage of its versatility and maneuverability to make their daily activities more efficient and enjoyable. It is also hoped that the public will follow this trend and help save energy and fight climate change at the same time.

[0004] The scooter requires a pair of swingable small wheels to be mounted on its rear end as a parking stand. In the parking position, the handlebars are in a folded position, which can be pulled apart by hand and stand vertically with its small wheels and the rear end of the deck frame touching the ground, thus saving space in crowded places such as buses or trains.

[0005] For a scooter to be able to quickly convert between stand-up and sit-down positions, it requires an integrated seat. The seat will be made of a flat plate that, when placed on the deck of the scooter, serves as the front part of the deck for stand-up riding. The seat has a pair of parallel support columns, consisting of a front column and a rear column. They are mounted in the middle of the deck frame. When the seat is on the deck, the two columns are placed horizontally, the front column is located below the rear column and is hinged to the seat separately through brackets, and its rear end is hinged to the deck frame. When the parallel columns are raised to the vertical position and the seat is placed in the sit-down position, the rear column will automatically lock to the deck frame.

[0006] Another improvement required for sit-down driving is to make the handlebar position adjustable. Conventional telescopic handlebar stems can adjust the height of the handlebar and tilt it on a folding joint to be placed in the folded position. In addition, the handlebar stem needs a novel tilt adjustment joint hinged on the folding joint, which can tilt the lower handlebar stem backwards in the same way as the folding joint and lock it in the selected position. With height and tilt adjustment, the handlebar can be set to any desired position. Once the handlebar stem is deployed from the folded position for driving; there is no need to adjust the handlebar stem, which is a useful feature for sit-down driving because each driver will set it in the preferred position. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional diagram of a stand-up electric scooter in a driving position.

[0008] Figure 2 It is a side view of a stand-up electric scooter in a parking position.

[0009] Figure 3 is a side view of a stand-on electric scooter being pulled out of a parked position.

[0010] Figure 4 It is a side view of a stand-up electric scooter standing vertically on the ground.

[0011] Figure 5 It is a three-dimensional diagram of a stand-up electric scooter in a driving position.

[0012] Figure 6 It is a side view of a stand-up ride-on electric scooter in a parking position and a ride-on configuration.

[0013] Figure 7 It is a side view of a stand-up ride-on electric scooter being pulled out of a parked position.

[0014] Figure 8 It is a side view of a stand-up electric scooter standing vertically on the ground.

[0015] Fig. 9 yes Figure 1 A top and side view of a deck frame on a stand-up scooter.

[0016] Fig.10 yes Figure 1 A cross-section of a deck frame on a stand-up scooter.

[0017] Fig.11 yes Figure 5 A cross-section of a deck frame on a stand-up ride-on scooter.

[0018] Fig.12 yes Figure 5A top and side view of the deck frame on a stand-up ride-on scooter.

[0019] Fig.13 yes Figure 1 and Figure 5 Both scooters are shown in partial side and top views of the rear end assembly in a parked position.

[0020] Fig.14 yes Figure 1 and Figure 5 Both scooters are shown in partial side elevational views of the rear end assembly in the drive position.

[0021] Fig.15 are side and top views of the locking arm.

[0022] Fig.16 are side and top views of the locking hook.

[0023] Fig.17 It is a partial side view and top view of the small wheel locking device.

[0024] Fig.18 The rear wishbone is shown in side and top views.

[0025] Fig.19 yes Figure 5 Side and front views of a lower handlebar stem retaining clamp on a stand-up ride-on scooter.

[0026] Fig. 20 yes Figure 5 A plan view of the locking hook of the lower handlebar stem retaining clamp on a stand-up scooter.

[0027] Fig.21 yes Figure 1 and Figure 5 Partial side and front views of the front wheel assembly on two scooters, showing the handbrake and front wheel drive.

[0028] Fig. 22 yes Figure 1 and Figure 5 A partial right side view of the front wheel assembly on both scooters, showing the installation of the handbrake.

[0029] Fig.23 yes Figure 5 Partial isometric view of the folding and tilting joints on a scooter. (The head tube is shown in a vertical position for clarity.)

[0030] Fig.24 Yes Display Figure 5 A partial side view of a lower handlebar stem on a scooter tilted on a folding hinge to a folded position.

[0031] Fig.25 Yes Display Figure 5 Side view of a lower handlebar stem on a scooter tilted on a tilt hinge to a maximum tilt position.

[0032] Fig.26 yes Figure 5 A partial side view and a cross-sectional front view of a deck assembly on a stand-up ride-on scooter with the seat in the ride-on position.

[0033] Fig. 27 is a cross-sectional view of the deck frame assembly showing Figure 5 Horizontal locking device on a stand-up ride-on scooter.

[0034] Fig.28 is a cross-sectional elevation view of the deck frame assembly showing Figure 5 The front upright on a stand-up ride-on scooter.

[0035] Fig.29 yes Figure 5 A plan view of a release lever for a rear upright locking device on a stand-up ride-on scooter.

[0036] Fig.30 yes Figure 5 A plan view of a locking hook on the rear upright of a stand-up ride-on scooter.

[0037] Fig.31 yes Figure 5 Side and front views of a seat articulation bracket for a front upright on a stand-up ride-on scooter.

[0038] Fig.32 yes Figure 5 Side and front views of the seat articulation bracket for the rear upright of a stand-up ride-on scooter.

[0039] Fig.33 yes Figure 5 A plan view of the locking hook of the front upright on a stand-up ride-on scooter.

[0040] Fig.34 yes Figure 5 A plan view of the release lever for the front upright on a stand-up ride-on scooter.

[0041] Fig.35 yes Figure 5 Side and top views of the rear upright on a stand-up ride-on scooter.

[0042] Fig.36 yes Figure 5 Side and top views of the front upright on a stand-up ride-on scooter. DETAILED DESCRIPTION

[0043] Stand-up scooters are simpler, so they are described first, followed by stand-up ride-on scooters. These two types of scooters share many parts, especially the front and rear ends of the scooters.

[0044] To reduce maintenance, both scooters will be equipped with an electric gearless hub motor to drive the rear wheel and a manual disc brake on the front wheel. To compensate for the low starting torque and low efficiency of the rear wheel motor at low speed, an electric drive is added to the front wheel to assist the scooter to start from a stop without the need for laborious kicking. Once the scooter is well started, the front wheel drive will be turned off.

[0045] By convention, the two wheels and all components are positioned symmetrically in a longitudinal vertical plane unless otherwise stated. In order to make both scooters lighter, the main structure is shown as being made of a lightweight alloy such as aluminum, so that holes for threaded, pin or axle engagement are shown with reinforcing inserts.

[0046] In the demonstration, components that already exist in today's scooters are addressed; only the main ones are simply shown and briefly mentioned. Novel components are explained and described in detail, but their design is rudimentary and is only used to demonstrate the concept. Although the illustration of many parts is neither correct nor to scale, some of the main dimensions of the scooter are shown to scale in order to give an idea of ​​what the new scooter will look like. These dimensions are listed below.

[0047] Main dimensions of the scooter used in the illustration

[0048] Both wheels are 10 inches in diameter and have a 37.5-inch center-to-center distance.

[0049] The handlebar stem has a 10-degree tilt angle, the handlebar is 44.5 inches above the ground, and the handlebar stem can be tilted up to 20 degrees.

[0050] The standing deck is 6 inches high from the ground, the deck width is 8 inches, and the deck frame thickness is 3.25 inches.

[0051] Seat height; 24.25" from ground, 18" from deck (about the same as a home chair).

[0052] Seat: 3 / 16" thick, 8" long and 9" wide.

[0053] Seatpost: Lateral width 1.25 inches.

[0054] Scooter: Overall length 49.25 inches, overall height 46 inches, overall width 14 inches.

[0055] Stand-up electric scooter

[0056] Main assembly of stand-up scooter

[0057] The stand-on scooter 100 includes three main parts: a front end assembly, a platform assembly 103 , and a rear end assembly 105 .

[0058] Front end assembly

[0059] The front end assembly is composed of a front wheel assembly 106 , a handlebar stem assembly 107 and a handlebar assembly 108 .

[0060] Handlebar components

[0061] Schematic diagram as Figure 1 shown.

[0062] The components included in the handlebar assembly 108 are all conventional. It has a handlebar 112, a twist-type accelerator handle 166 is installed on the right side, a hand brake lever 164 is arranged on the left side, and a digital screen is arranged in the middle to display the required information.

[0063] Front wheel assembly

[0064] Schematic diagram as Figure 1 and 21 shown.

[0065] The front wheel assembly 106 includes most of the conventional parts. It consists of a front wheel 113 with a hand brake assembly, a wishbone 115 connected to the front wheel 113, a wishbone shaft 116 holding the wishbone 115, a shock absorber installed in the wishbone shaft 116 to achieve a smooth ride, a head pipe 118 holding the wishbone shaft 116, a wheel fender 119, a new handlebar 120 installed in front of the head pipe 118, a headlight 121 installed in front of the handlebar 120, and a new front wheel drive. A rear beam 123 is installed on the rear side of the head pipe 118 for connection to the front end of the deck assembly 103 through bolts.

[0066] In addition, a special control must be added to the accelerator handle on the handlebar to perform the following operations. When the accelerator handle is activated to move the scooter from a stopped position, it will turn on both the rear-wheel drive and the front-wheel drive until the scooter has a good start, at which time the control will turn off the front-wheel drive. In addition, when the scooter slows down during an uphill climb, the control turns on the front-wheel drive for assistance. Therefore, with two drive modes, the scooter can be driven like an adult sit-on electric vehicle.

[0067] For ease of understanding, the following description of the front wheel assembly 106 is based on the wishbone axis 116 being in a vertical position, and the positions of front, rear, left, and right are based on a scooter.

[0068] Handlebar stem assembly

[0069] Schematic diagram as Figure 1 , Figure 2 shown.

[0070] The handlebar stem assembly 107 comprises components which are all conventional. It consists of a handlebar stem 109, a folding joint 128 and a retaining latch 122. The handlebar stem 109 is connected at its upper end to the handlebar 112 and at its lower end to the folding joint 128. The handlebar stem has a locking head 110 mounted on its rear side to engage with the retaining latch 122. The folding joint 128 has a folding hinge 129 on its rear side to tilt the handlebar stem rearward. On its front side, the folding joint 128 has a folding latch 130 connected to a top flange 131 of the wishbone shaft 116. The retaining latch 122 is mounted on a rear beam 123 of the head tube 118 to retain the handlebar stem 109 in a folded position.

[0071] Handbrake and front wheel drive

[0072] Schematic diagram as Figure 1 , 21 and 22.

[0073] The handbrake assembly is conventional. It consists of a handbrake device 156 and a disc 125. The disc 125 is mounted concentrically on the left side of the front wheel axle and the handbrake device 156 is mounted on the left rear side of the fork arm 115. The handbrake device 156 is actuated distally by a handbrake lever 164 on the handlebar 112. The front wheel drive comprises a gear motor 160 mounted on the right side of the fork arm and having an output shaft with a one-way clutch engaged with the front wheel axle. The function of the front wheel drive has been mentioned in the section on the front wheel assembly. The DC gear motor 160 has a high starting torque so that its size can be small. In addition, it has a one-way clutch engaged with the front wheel so that when the rear wheel motor is driven alone, no energy is wasted and it should be able to be used for a long time without any maintenance.

[0074] Deck components

[0075] Schematic diagram as Figure 1 , 9 and 10.

[0076] The deck assembly 103 includes a deck frame 169 and a deck plate 170 with a non-slip surface. The deck frame 169 is a weldment made of a light alloy. It consists of a longitudinally laid deck beam 171, a front plate 173, a transverse channel beam 172, two side plates 174, a pair of tail beams 176, a rear beam 177, two transverse edge plates 179 and a pair of brackets 175 for mounting the axle.

[0077] The deck beam 171 has a channel-shaped cross-section with an opening on the upper surface. Both upper edges have outward flanges for mounting the deck plate 170. The battery pack 168 and necessary components are mounted inside the deck beam 171. The upper flange of the transverse channel beam 172 has a circular cutout in the middle of its rear edge to provide space for the rear wheel fender.

[0078] The tail beams 176 are located on each side of the rear wheel. The front of each tail beam 176 is horizontal, the rear is vertical, and there is a bend in the middle. The rear beam 177 can be a square tube with a reflective signal strip attached to the back, or a channel beam with an open surface on the rear side for installing electrical signals inside.

[0079] The front plate 173 of the deck frame 169 is bolted to the rear beam 123 of the head tube 118. The deck plate 170 is mounted on the top of the deck beam 171 by screws. Two anti-skid pads 178 are respectively mounted behind the rear end of the tail beam 176 for engaging with the ground when the scooter stands upright.

[0080] Backend components

[0081] The rear end assembly 105 is composed of a rear wheel assembly 208 and a parking assembly.

[0082] Rear wheel assembly

[0083] Schematic diagram as Figure 1 , 13 , 14 and 18.

[0084] The rear wheel assembly 208 is composed of a rear wheel 209, a rear wishbone 210, a pair of shock absorbers 211 and a wheel fender 212. The rear wheel 209 is directly driven by a gearless hub electric motor installed in its wheel hub. The rear wishbone 210 is a welded part. It is composed of a pair of axle plates 214, a pair of hinged beams 215, two round short columns 207 and a round tube front beam 216. The two axle plates 214 are respectively located on each side of the rear wheel 209 and have a groove with an open round end at the bottom for mounting the axle of the rear wheel 209 from below. The hinged beam 215 is connected to the axle plate 214 at its rear end and to the end of the front beam 216 at its front end. The round short columns 207 are respectively installed on the outer surface of each axle plate 214 for mounting one end of the shock absorber, and the two ends of the front cross beam 216 are respectively hinged to the side plates 174 on the frame 169. Shock absorbers 211 are respectively located on both sides of the rear wheel 209, above the rear fork arm 210 and its rear end is respectively hinged on the circular short column 207, and its front end is hinged on the side plate 174 on the deck frame 169. The rear fork arm 210 can be made into a stronger and lighter single piece by die casting.

[0085] Parking assembly

[0086] The parking assembly includes a small wheel assembly and a small wheel locking device 218.

[0087] Small wheel assembly

[0088] Schematic diagram as Fig.13 and Fig.14 shown.

[0089] The small wheel assembly consists of a pair of small wheels 219, a pair of small wheel arms 220 of rectangular beams and a side-mounted round tube arm shaft 222. The arm shaft 222 is located behind the rear wheel 209 and is hinged on a pair of brackets 175 on the tail beam 176 of the deck frame 169. The following description is based on the small wheels 219 contacting the ground to place the scooter in the parking position and the small wheel arms 220 are vertical. The lower end of each small wheel arm 220 is hinged to the small wheel 219 on its outer side. There is a blind hole on the inner side of its upper end, which is locked with one end of the shaft 222 by a pin. The small wheel 220 is placed individually on the outer surface of the bracket 175 to hold itself in place laterally. The scooter is set to travel by swinging the small wheel arms 220 forward to the storage position. A side cover beam 229 is installed on the bracket 175 to protect the arm shaft 222 from the back.

[0090] Trolley locking device

[0091] Schematic diagram as Figure 13-17 shown.

[0092] The wheel locking device 218 has a locking arm 223 and a locking hook 224. The locking arm 223 is made of a locking plate 221 and a bushing 228. The locking arm 223 is located between the rear wheel 209 and the left tail beam 176. It is locked to the arm shaft 222 with a pin passing through its bushing 228. On its front side, the locking plate 221 has a circular edge with locking teeth concentric with the arm shaft 222. Each locking tooth is triangular, with one engagement edge being radial or slightly pointing to the trailing side, and there is an inclined trailing side edge behind. The trailing side is the direction in which the wheel arm 220 swings forward.

[0093] The locking hook 224 is located at the front side of the locking plate 221 and is hinged on the left tail beam 176. The rear edge of the locking hook 224 has teeth that engage with the locking plate 221. Its hinge should be located on the tangent line of the middle part of the radius of the pitch circle of the teeth of the locking plate 221. The locking hook 224 has a spring 225 to keep it in the engaged position, and a roller 226 installed at the front of the locking hook 224 and located above the left tail beam 176 to release it when engaged, and a stop pin 227 installed on the left tail beam 176 to keep it near the engaged position after disengagement.

[0094] By pressing the roller 226 until it stops against the left tail beam 176, the locking hook 224 will be disengaged from the locking plate 221. And the spring 230 mounted on the locking plate 221 will swing the rotating shaft 222 to move the small wheel arm 220 forward until the locking plate 221 stops at the pin 232 mounted on the tail beam, placing the small wheel arm 220 in the storage position, thereby allowing the scooter to be driven.

[0095] The scooter is parked by kicking the left dolly 219 to swing the dolly arm 220 down from its stowed position and the locking plate 221 will rest on the pin 231 mounted on the tail beam 176. In the parked position, the dolly 219 should be slightly off the ground and the scooter will tilt slightly with one of the dolly 219 resting on the ground, just like a conventional stand.

[0096] With the scooter in the parking position and the handlebars in the folded position, the scooter can be rolled away by hand by pulling on the handle 120 on the head tube 118. In the same position, the scooter can also stand vertically with the mobile wheels 219 and the tail beam 176 engaged with the ground, saving space in crowded areas. If the center of gravity of the scooter is too high or too low, the end of the tail beam 176 should be repositioned.

[0097] Stand-up electric scooters

[0098] Main assembly of stand-up / ride-on electric scooter

[0099] The sit-on-stand powered electric scooter 300 includes three main components: a front end assembly, a standing deck assembly 303 including a seat assembly 304, and a rear end assembly 105. Their relative positions are the same as the sit-on-stand powered scooter 100. Unless otherwise specified, the tandem wheels and all components are symmetrically positioned in a longitudinal vertical plane.

[0100] Front-end components

[0101] The front end assembly is composed of the front wheel assembly 106 , the handlebar stem assembly 307 and the handlebar assembly 108 .

[0102] Handlebar components

[0103] Schematic diagram as Figure 5 shown.

[0104] The handlebar assembly is identical to assembly 108 on the stand-on scooter 100 .

[0105] Front wheel assembly

[0106] Schematic diagram as Figure 5 , 21 and 22.

[0107] The front wheel assembly is identical to assembly 106 on stand-up scooter 100 .

[0108] Handlebar stem assembly

[0109] Schematic diagram as Figure 5 , 23 , 24 and 25.

[0110] The handlebar assembly 307 is composed of an upper handlebar 311, a lower handlebar 309, a folding joint 328, a tilting joint 329, a clamp 330, and a retaining clamp 322. The joint between the upper handlebar 311 and the lower handlebar 309 is conventional. The upper handlebar 311 is connected to the handlebar 112 at its upper end, and is joined to the upper end of the lower handlebar 309 at its lower end. The clamp 330 is mounted on the upper end of the lower handlebar 309 to be clamped on the upper handlebar 311 for adjusting the height of the handlebar. The lower end of the lower handlebar 309 is connected to the tilting joint 329. The rear end of the tilting joint 329 is hinged to the upper side of the folding joint 328. The function of the folding joint 328 is the same as that of the folding joint 128 of the scooter 100. The folding joint 328 has a folding disc 331. The folding plate has a folding hinge 129 at the rear side, hinged to a flange 131 of the fork arm shaft 116, and a folding latch 130 at the front side connected to the flange 131. With the latch 130 released, the lower handlebar 309 can be tilted and held in the folded position by the retaining clamp 322.

[0111] Lower handlebar assembly retaining clip

[0112] Schematic diagram as Figure 5 , 19 and 20.

[0113] The retaining clamp 322 is used to retain the lower handlebar rod 309 in the storage position after being released from the folding joint 328. The retaining clamp 322 is composed of a locking hook 339, a lower semicircular clamp 340 and an upper semicircular clamp. The lower clamp 340 has a frame mounted on the upper surface of the rear beam 123 of the head tube 118. The two clamps 340, 341 are hinged together on the right side and locked together on the left side by the locking hook 339. In the locked position, the two half clamps form a circular hole to fix the lower handlebar rod 309 inside. Their inner surface has a soft lining to accommodate the lower handlebar rod 309 with different tilt adjustment angles.

[0114] The two half-clamps 340, 341 each have a laterally protruding end on their left side, viewed from the rear towards the axis of the clamp. The upper surface of the protrusion on the upper clamp 341 is intended to engage with a locking hook 339. The locking action of the hook 339 is conventional. It has an engagement face and an inclined face so that the upper clamp 341 can be locked by spring force when the upper clamp is closed. The hook has a spring 343 to keep it engaged. The protruding end of the lower semicircular clamp 340 is positioned close to the hook in the engaged position to keep the hook after disengagement. By pressing the lower end of the hook 339 to disengage it, the upper clamp 341 will be opened by a spring mounted on its hinge and will be kept in the open position by a pin 334 mounted on the lower clamp.

[0115] Tilt joint for lower handlebar assembly

[0116] Schematic diagram as Figure 6 ,23 , 24 and 25.

[0117] The tilt joint 329 is mainly composed of a ring 345, a sector tooth 346, a locking rod 347 and a tilt rod 348. The following description is based on the head tube 118 being in a vertical position. The ring 345 fixes the lower end of the lower handlebar rod 309 inside. The rear side of the ring 345 has a tilt hinge 349, which is hinged on the folding plate 331 at a position above the folding hinge 129, so that the lower handlebar rod 309 can be tilted backward like the folding joint 328, and then locked to a selected angle to place the handlebar 112 in a comfortable riding position.

[0118] The sector tooth 346 is made of hardened alloy and has uniform thickness on its front and bottom surfaces. Its bottom is placed in a groove on the upper surface of the folding disk 331 and fixed with screws. The front surface of the sector tooth 346 is circular, with its center located at the tilt hinge 349, and has locking teeth on the circular periphery for adjusting the tilt angle of the lower handlebar rod 309. To cover the end of the circular ring around the sector tooth 346, a cover 350 made of a soft material is bonded to the inner surface of the circular ring 345.

[0119] The front side of the ring 345 has a square hole longitudinally arranged at the same height as the tilt hinge 349. The square hole is reinforced with a hardened pad to engage with a lock rod 347. The rear end of the lock rod 347 has a locking tooth that engages with the fan tooth 346 to hold the lower handlebar 309 in position and then drive the car. The front end of the lock rod 347 has a horizontal open slot and a vertical pin is fixed through the slot wall.

[0120] The tilt lever 348 is made of a flat plate, the right end of which is placed in the slot of the lock lever 347 to be hinged on the vertical pin. The tilt lever 348 extends to the left and is hinged in the middle with a vertical pin on the fork bracket 353 protruding from the circular shaft ring 345, and has a spring to keep it in the engaged position. The left end of the tilt lever 348 is a rod with a soft cover. By simply pulling the control lever backward until it hits the stop pin 355 mounted on the fork bracket 353, the lock lever 347 will be completely disengaged from the sector tooth 346, so that the lower handlebar 309 can be tilted to any desired angle and then locked.

[0121] Standing Deck Kit

[0122] Schematic diagram as Figure 5 , 11 , 12, 26, 27 and 28.

[0123] The deck assembly 303 is composed of a deck frame 369 and a pair of deck boards 370 having a non-slip surface. The deck frame 369 is the same as the deck frame 169 on the stand-up drive scooter 100, except that it has a pair of deck beams 371 instead of the deck beams 171 on the scooter 100. The connection assembly of the deck assembly 303 to the front wheel and the rear end assembly are also the same as those of the scooter 100.

[0124] There is a longitudinal space between the pair of deck beams 371 for mounting a seat support. Each deck beam 371 has a groove-shaped cross-section and has an opening on the upper surface. The outer upper edge has an outward flange and the inner upper edge has an inward flange. Both flanges are used to mount the deck plate 370 with screws. The battery pack 168 and necessary components are mounted in the two deck beams 371. Each deck beam 371 has two side edge plates 379 and two partition walls 375. The partition walls 375 provide a waterproof middle portion for the battery pack, avoiding an axial hole located at the battery pack. The front plate 173 is connected to the rear beam 123 of the head pipe 118 by bolts.

[0125] Seat components

[0126] Schematic diagram as Figure 6 , 26 -36.

[0127] The seat assembly 304 is mainly composed of a seat 381 and a pair of parallel support columns. The seat 381 is made of a flat plate with rounded bends on its longitudinal sides. It may have a detachable cushion 384 to maintain a comfortable sitting feeling. In order to fix the cushion 384 on the seat, the cushion has four neck buttons, each of which is located at its longitudinal four corners to engage with four open slots located on the seat 381, such as Fig.26 shown.

[0128] The pair of parallel columns are placed in the longitudinal space between the pair of deck beams 371. The parallel columns are the front column 382 and the rear column 383. Both columns have the same length and lateral width. The column has two positions: a horizontal position when the seat 381 is used as the front part of the standing deck, and a vertical position when sitting driving. For ease of understanding, the parts or the positions where they are located will be identified literally according to the position of the column. For example, when the rear column is in a vertical position, its upper hinge and front surface are literally said. But when the rear column is in a horizontal position, its upper hinge is called the front hinge and its front surface is called the lower surface.

[0129] When the seat 381 is placed on the deck board 370, both columns are horizontal and located below the seat, and the front column 382 is located below the rear column 383. The front ends of the columns are hinged to the seat 381 by brackets alone, the front column 381 uses brackets 385, and the rear column 383 uses brackets 386, and the rear ends of the columns are respectively hinged to the inner wall of the deck beam 371. The rear column 383 has a deck strip 403 installed on its upper surface as a part of the standing deck.

[0130] Both posts 382, ​​383 are made of light alloy with die-cast ends for articulated joints. Each articulated hole should have a reinforcing bushing.

[0131] Seat vertical locking device

[0132] Schematic diagram as Fig.26 , 29 , 30 and 35.

[0133] The vertical locking device is used to lock the rear pillar 383 on the deck beam 371 for sitting driving. The following description is based on the rear pillar 383 being in a vertical position and locked in place. The rear pillar 383 has two vertical longitudinal grooves located below its lower hinge, and has a locking pin 380 fixed laterally in the groove wall. Two identical locking hooks 388 are respectively positioned in the grooves. At its rear end, each locking hook 388 has an open groove with a round end to engage with the locking pin 380 from below. At the same height of the locking pin 380, the front ends of the locking hooks 388 are respectively fixed to the right ends of the locking shafts 389, and the left ends of the locking shafts 389 are fixed to the release lever 392 located on the left side of the left deck. The locking shaft 389 is hinged on the deck beam 371. The engagement between the locking shaft 389 and the locking hooks 388 and the release lever 392 is that the locking hooks 388 and the release lever 392 have square holes, and the shafts have square cross-sections and are respectively located in the engagement position.

[0134] At the back of the slot, each locking hook 388 has an inclined edge. When the rear post 383 rises to the vertical position, the locking pin 380 will first push the locking hook 388 away, and then the locking hook 388 swings back to lock the locking pin 380 under the effect of the spring force.

[0135] The release lever 392 has a spring 402 that holds the locking hooks 388 in the engaged position and a roller 390 at its rear end. The release lever 392 has a circular slot centered on and below the shaft 389. A stop pin 391 is mounted on the left deck beam 371 and engages in the slot. In the locked position, the front end of the slot stops at the stop pin 391, holding the locking hooks 388 in the engaged position. By pressing the roller 390 downward until the release lever 392 stops at the other end of the slot, the two locking hooks 388 will disengage from the rear pillar 383, allowing the seat 381 to tilt downward to the deck position.

[0136] A stop plate 393 is installed on the deck frame 369 to help stop the rear column 383 in the engagement position from behind. After the rear column is locked, the stop plate 393 maintains a small gap with the rear column and does not interfere with the locking action.

[0137] Seat level locking device

[0138] Schematic diagram as Fig.26 and 27 shown.

[0139] When the seat 381 is in the deck position, the horizontal locking device 394 is used to hold the seat 381 and its supporting column. When the column is in the horizontal position, the front end of the front column 382 has a protrusion 404. The upper side of the protrusion is an engagement surface, which is in line with the center line of the front column 382. The locking hook 400 is used to engage with the protruding head on the front column 382 from above, and its design is the same as the design of the hook 339 on the fixing clip 322. The locking hook 400 is fixed at its lower end to the right end of the locking shaft 401. The locking shaft 401 is hinged on the deck beam 371, and its left end is fixed to the lever 406 located outside the left deck beam 371. The lever has a spring to keep the locking hook 400 in the engaged position. By pressing the lever 406 backward, the locking hook 400 will be disengaged, allowing the seat 381 to be raised to the seating position.

[0140] Seat weight balancing spring

[0141] Schematic diagram as Fig.26 and 28 shown.

[0142] In order to safely and easily operate the seat 381 when changing the seat position between standing driving and sitting driving, the weight of the seat and the support must be balanced. The following description is based on the seat in the sitting driving position and the pillars are vertical. The lower hinge of the front pillar 382 has a boss 405, which is connected to one end of a pair of tension springs 408. The other end of the spring 408 is fixed to the inner wall of the deck beam 371 by a pin. The pair of springs 408 are located on the rear side of the lower hinge near the front pillar 382. When the seat is lowered forward, the tension of the springs and the offset from the lower hinge will increase, thereby generating more torque to offset the torque of the seat and the pillar.

[0143] Backend components

[0144] Schematic diagram as Figure 13-17 shown.

[0145] The rear end assembly of the stand-up ride-on scooter 300 is the same as the rear end assembly 105 of the stand-up ride-on scooter 100 .

[0146] This concludes the detailed description of the scooters 100 and 300. Although the invention has been fully described in detail and illustrated in the accompanying drawings, the invention is not limited to these details, as many changes and modifications may be made to the invention without departing from its spirit and scope. It is therefore described to cover any and all modifications and forms that may come within the language and scope of the appended claims.

Claims

1. An improved stand-up electric scooter having a front wheel assembly, a handlebar assembly, a handlebar stem assembly, a deck frame assembly and a rear wheel assembly, the front wheel assembly comprising a front wheel with a disc hand brake device, a fork arm, a fork arm shaft and a head tube, the handlebar assembly having a handlebar with an accelerator grip mounted on the right side and a hand brake handle mounted on the left side, the handlebar stem assembly having a folding joint with a folding hinge to allow the handlebar stem to tilt backward and a folding latch to lock to the fork arm shaft, the deck frame assembly having a deck frame, the rear wheel assembly comprising an electric rear wheel, wherein the improvement comprises; a handle mounted on the front side of the head tube, a pair of tail beams mounted on the deck frame, respectively located on both sides of the rear wheel and extending to the end of the rear wheel, a pair of small wheels, respectively located on the outsides of two small wheel arms and laterally hinged to the lower ends of the small wheel arms, the upper ends of the two small wheel arms are respectively fixed to the ends of the laterally placed arm shafts, the arm shafts are located behind the rear wheels and hinged to the tail beam, the two small wheel arms are respectively located on the outer surface of the tail beam, and A locking device is mounted on the inner side of the left tail beam, engaged with the shaft, capable of locking the shaft to set the two small wheel arms in a vertical position, allowing the two small wheels to contact the ground, placing the scooter in a parking position, and the lower handlebar rod assembly is in a storage position, the scooter is allowed to roll by pulling the handle by hand, and stand vertically with the small wheels and the ends of the two tail beams contacting the ground, and by unlocking the locking device, the small wheel arms are allowed to swing forward to the storage position under the action of the spring force, placing the scooter in a driving position.

2. The improved stand-on electric scooter according to claim 1, characterized in that: The locking device also includes a locking arm and a locking hook. The rear end of the locking arm is installed on the rotating shaft, and the front end is provided with a fan-shaped portion centered on the rotating shaft, and the outer periphery of the fan-shaped portion is provided with locking teeth. The locking hook is hinged on the left tail beam, and the rear end is provided with a round edge, and the round edge is provided with locking teeth, which are engaged with the locking arm and are maintained in engagement with a spring. The locking hook can be disengaged by pressing down a roller installed at its front end.

3. The improved stand-on electric scooter according to claim 1, characterized in that: The utility model also comprises an electric drive device for driving the front wheel to assist the scooter to start from a stop state and to decelerate when going uphill.

4. A stand-up / ride-on electric scooter, comprising: A front wheel assembly, a handlebar assembly, a handlebar stem assembly, a frame assembly with a seat assembly, a rear wheel assembly, and a parking assembly, and The front wheel assembly includes a front wheel with a handbrake device, a front wheel electric drive only for starting and climbing, a wishbone with a wishbone shaft, a head pipe with a rear beam, and The handlebar assembly includes a manual accelerator and a handbrake handle, and The handlebar assembly includes an upper handlebar, a lower handlebar, a clamp, a folding joint, a tilting joint and a retaining clamp, wherein the upper end of the upper handlebar supports the handlebar, the clamp is mounted on the upper end of the lower handlebar and cooperates with the lower end of the upper handlebar to adjust the height of the handlebar assembly, and The folding joint is located at the lower end of the handlebar assembly, and a folding hinge is provided at the rear side thereof, which is hinged to the upper end of the fork arm shaft, and a folding latch is provided at the front side thereof, which is connected to the fork arm shaft, and The tilt joint is connected at its upper side to the lower end of the lower handlebar, and has a tilt hinge at its lower rear side to be hinged to the upper rear side of the folding joint, above the folding hinge, so that the lower handlebar can be tilted backward and locked in a selected position, and The retaining clip is mounted on the rear beam of the head tube to hold the lower handlebar in a folded position, and the deck frame assembly includes a deck frame and a pair of deck plates, the deck frame connecting its front end to the rear beam of the front wheel assembly, the deck plates being mounted on top of the deck frame as a standing deck for standing driving, and The seat assembly is mounted on the deck frame and comprises a flat seat supported by a pair of parallel columns, and the seat has two positions, one position resting on the deck plate as the front of the standing deck for standing driving, and the other position as the seat for sitting driving, and A pair of parallel columns consisting of a front column and a rear column are located in the longitudinal space in the middle of the deck frame. When the seat is leaning against the deck board, the two parallel columns are horizontal, the front column is located below the rear column, their front ends are respectively hinged to the seat through brackets, and the ends are hinged to the deck frame, and a vertical locking device is provided to automatically lock the seat in the sitting-driving position when the parallel columns are raised to a vertical position, and a horizontal locking device is provided to automatically lock the seat on the standing-driving driven deck board when the parallel columns are tilted downward to a horizontal position, and The rear wheel assembly includes an electric rear wheel, a rear fork arm and a pair of shock absorbers, wherein the rear fork arm and the shock absorber are respectively connected to the rear end of the deck frame. The parking assembly is composed of a small wheel assembly and a locking fixture. The small wheel assembly is composed of a pair of small wheels, a pair of small wheel arms and a transversely placed shaft. The small wheels are individually hinged at the lower ends of the small wheel arms, and the upper ends of the small wheel arms are individually fixed to the two ends of the shaft. The shaft is located behind the rear wheel and is hinged to a pair of tail beams of the deck frame. Said locking device is mounted on the inner side of the left tail beam and locks the trolley arm in a vertical position to park the scooter, and when the lower handlebar stem is in the folded position and the seat is on the deck, the scooter can be rolled by pulling the handle mounted on the head tube of the front wheel assembly by hand and standing vertically with the tail beam and trolley wheel engaged with the ground, and by releasing the locking device, the trolley arm will be raised forward and locked in the storage position, setting the scooter in the driving position.

5. The stand-up / ride-on electric scooter according to claim 4, characterized in that: The vertical locking device also includes a protruding end below the lower hinge of the rear column, two identical locking hooks, a locking shaft, a handle and a spring, and The protruding end has two longitudinal grooves and a transverse pin fixed in the groove wall, and the rear ends of the locking hooks are respectively located in the grooves and have open grooves to engage with the pins from below, and their front ends are fixed to the right end of the locking shaft located at the same height as the pins, and The locking shaft is hinged on the deck frame, and its left end is fixed to the front end of the handle located outside the deck frame. The spring forces the handle to place the locking hook in a position engaging with the pin, thereby enabling the seat to be kept in the riding position, and by pressing the rear end of the handle downward, the locking hook will disengage from the pin, causing the parallel column to tilt forward to place the seat on the deck board.

6. The stand-up / ride-on electric scooter according to claim 4, characterized in that: The horizontal locking device also includes a convex head, a locking hook, a locking shaft, a handle, and a spring on the front hinge of the front column, and the upper side of the convex head has a matching surface consistent with the center line of the front column, the locking hook is located in front of the convex head and has a surface that matches the matching surface of the convex head from above, and the bottom of the locking hook is fixedly connected to the right end of the locking shaft. The locking shaft is hinged on the deck frame, and its left end is fixed to a handle located outside the deck frame, and a spring is installed on the handle to force the locking hook to engage with the protruding head, and When the front post is tilted to place the seat on the deck, the locking hook will automatically lock the front post, securing the seat in place for stand-up driving, and by pressing the handlebars rearwards, the locking hook will disengage from the front post, allowing the parallel posts to be raised to place the seat in the sit-down driving position.

7. The stand-up / ride-up electric scooter according to claim 4, characterized in that: The tilting joint also includes an annular collar, a gear fan, a locking rod, a tilting rod, a spring and a folding plate hinged on the folding hinge of the folding joint. The annular collar is hinged on the folding hinge of the folding joint and fixes the lower end of the lower handlebar rod, and its front side has a longitudinal square hole in a straight line with the tilting hinge. The gear fan is installed on the folding plate and has a front circular edge centered on the tilting hinge. The circular edge is provided with locking teeth around the periphery. The locking rod is located in the square hole, and its rear end is provided with locking teeth engaged with the fan-shaped part. The right end of the tilting rod is hinged on the vertical pin fixed to the front end of the locking rod, the middle part is engaged with the spring and hinged on the protruding bracket of the annular collar, and the left end is a handle. The tilting rod is pressed on the locking rod under the action of the spring force and engages with the fan-shaped part. The tilting rod is pulled backward and the locking rod is disengaged, so that the lower handlebar can be tilted backward and locked at a selected angle.

8. The stand-up / ride-on electric scooter according to claim 4, characterized in that: The retaining clamp also includes an upper semicircular clamp, a lower semicircular clamp fixed to the rear beam of the head tube and a locking hook. One end of the two semicircular clamps is hinged together to clamp the lower handlebar inside, and the other end is locked together by the locking hook. When the locking hook is released, the upper semicircular clamp is opened by a spring and stays in the open position.

9. The stand-up / ride-on electric scooter according to claim 4, characterized in that: The seat also includes a detachable seat cushion.

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