Patent ID: 12240557

ATTACHED DRAWINGS' REFERENCE NUMBERS AND NAME

(1) Seat frame assembly(101) First connecting post(s)(102) First latch(103) Second latch(104) Front wheel positioning clip(2) Rear wheel assembly(ies)(3) First connecting assembly(ies)(301) First connecting piece (s)(302) First bolt housing(s)(303) First connecting plate(s)(304) First accommodating cavity/(ties)(4) Footrest assembly(401) Footrest side-frame(s)(402) Footrest plate(403) Second connecting post(s)(404) Second connecting piece (s)(405) Second bolt housing(s)(5) Steering column assembly(501) Steering column bracket(502) Steering column(503) Steering handle(s)(504) Clamping plate(s)(505) Clamping angle(s)(506) Supporting rod(507) Clamping latch(es)(508) Clamping slot(s)(509) Upper steering column(510) Lower steering column(6) Front wheel assembly(ies)(7) Second connecting assembly(701) Third connecting piece(702) Third bolt housing(703) First limiting bolt(704) Second connecting plate(705) Second accommodating cavity(706) Fourth connecting piece(707) Fourth bolt housing(708) Second limiting bolt(709) Rectangular limiting plate(710) Upper notch(711) Lower notch(712) Third limiting bolt

DETAILED DESCRIPTION

In order to explain the technical content, structural features, and achieved objectives and effects of the invention in detail, the following examples are given in conjunction with the accompanying drawings for a detailed description.

In the description of the invention, it will be understood that the terms “upper”, “lower”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, etc. which indicate the orientation or the positional relationship is based on the orientation or positional relationship as shown in the drawings. These descriptors are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the protection scope of the invention.

As shown inFIG.1andFIG.2, a draw-bar box-type quickly folding micro electric vehicle disclosed by the invention includes a seat frame assembly (1) arranged horizontally with a foldable backrest on the top surface. Two symmetrically arranged rear wheel assemblies (2) are provided at the rear of the lower end of the seat frame assembly (1). Two vertically downward first connecting posts (101) are provided near the front of the lower end of the seat frame assembly (1). A footrest assembly (4) is hinged to the lower ends of the two first connecting posts (101) through the first connecting assemblies (3). The footrest assembly (4) is arranged parallel to the seat frame assembly (1), the plane of the footrest assembly (4) is lower than the plane of the seat frame assembly (1). A steering column assembly (5) is hinged at the end of the footrest assembly (4) away from the seat frame assembly (1), and a front wheel assembly (6), with a power device, is attached at the lower end of the steering column assembly (5). The footrest assembly (4) includes two footrest side-frames (401) arranged in parallel and a footrest plate (402) provided above the footrest side-frames (401). The distance between the two footrest side-frames (401) corresponds to the distance between the two first connecting posts (101).

As shown inFIG.2toFIG.6, the first connecting assemblies (3) include first connecting pieces (301) that are fixed to the lower end of the first connecting posts (101), the first connecting pieces (301) are rectangular and arranged parallel to the seat frame assembly (1). The first bolt housings (302) are attached at the sides of the first connecting pieces (301) facing towards the steering column assembly (5). Both sides of the first connecting pieces (301) are connected to the two vertical first connecting plates (303) by bolts through the first bolt housings (302). Two first connecting plates (303) are positioned parallel with the inner sides facing each other symmetrically forming first accommodating cavities (304).

The first accommodating cavities (304) are shaped rectangularly, with their width corresponding to the length of the first connecting pieces (301), and the distance between two first accommodating cavities' (304) bottom surfaces corresponds to the width of the first connecting pieces (301). The end of the footrest side-frames (401) closer towards the seat frame assembly (1) are angled upwards to form the vertical second connecting posts (403). On the upper end of second connecting posts (403) are fixed the second connecting pieces (404), which are the dimensional equivalent of the first connecting pieces (301). The second bolt housings (405) are attached at the sides of the second connecting pieces (404) facing to the steering column assembly (5). Both sides of the second connecting pieces (404) are connected to the two vertical first connecting plates (303) by bolts through the second bolt housings (405). The length of the first accommodating cavities (304) corresponds to the sum of the lengths of the first connecting pieces (301) and the second connecting pieces (404).

Below the footrest plate (402) is a housing cavity, which contains an electric vehicle controller circuit board and a battery compartment. The electric vehicle controller circuit board and a battery are electrically connected to the front wheel assembly (6). There are openings for wiring attached to the battery to the side of the housing cavity, which is connected to the battery compartment A non-slip mat (406) (which is not shown in the drawings) is provided on the upper surface of the footrest plate (402).

As shown inFIG.7andFIG.8, the steering column assembly (5) includes the steering column bracket (501), with the centre of steering column bracket (501) intersecting the steering column (502) by means of an axle bearing in the centre of the steering column bracket (501). The lower end of the steering column (502) is connected to the front wheel assembly (6) through the bracket in the front wheel assembly (6). The upper end of the steering column (502) is connected to the steering handles (503). The ends of the steering column bracket (501) are angled downwards and hinged on the footrest side-frames (401). The two ends of the steering column bracket (501) are connected to two symmetrical and vertical clamping plates (504). The side of the clamping plates (504) facing the vehicle's rear is a bevel. The lower end of the bevel of the clamping plates (504) forms the clamping angles (505). Between the two footrest side-frames (401), there is a horizontal supporting rod (506). The supporting rod (506) is perpendicular to both footrest side-frames (401). Threaded onto the supporting rod (506) are two clamping latches (507) which correspond to the positions of the clamping plates (504). The side of the clamping latches (507) which faces the clamping plates (504) couples clamping angles (505) with the clamping slots (508). The lower ends of the clamping latches (507) are connected to compression springs, the other ends of which are connected to the footrest side-frames (401). An operation handle is attached on the seat frame assembly (1), the operation handle is connected to the upper end of the the clamping latches (507) through a sleeved brake wire (which is not shown in the drawings), and the sleeved brake wire is routed under the footrest plate (402).

As shown inFIG.1andFIG.9, the steering column (502) includes the upper steering column (509) and the lower steering column (510), which are hinged through the second connecting assembly (7). The second connecting assembly (7) includes the third connecting piece (701), which is fixed to the lower end of the upper steering column (509). The third connecting piece (701) is rectangular and is perpendicular to the upper steering column (509). The side of the third connecting piece (701), which is facing the seat frame assembly (1), is connected to the third bolt housing (702). Both sides of the third connecting piece (701) are connected to the two vertical second connecting plates (704) by the first limiting bolt (703) through the third bolt housing (702). Two second connecting plates (704) are positioned parallel with the inner sides facing each other symmetrically forming second accommodating cavities (705). The second accommodating cavity (705) is shaped rectangularly, with its width corresponding to the length of the third connecting piece (701). The upper end of the lower steering column (510) is fixed to the fourth connecting piece (706), which is the dimensional equivalent of the third connecting piece (701). The side of the fourth connecting piece (706), which faces the seat frame assembly (1), is connected to the fourth bolt housing (707). Both sides of the fourth connecting piece (706) are connected to the two vertical second connecting plates (704) by the second limiting bolt (708) through the fourth bolt housing (707). The length of the second accommodating cavities (705) corresponds to the sum of the lengths of the third connecting piece (701) and the fourth connecting piece (706).

In one of the second accommodating cavities (705), there is a rectangular limiting plate (709), where the length of the rectangular limiting plate (709) corresponds to the length of the second accommodating cavity (705). Between the rectangular limiting plate (709) and the second accommodating cavity (705), there is an expanding spring. The sum of the thickness of the rectangular limiting plate (709) and the width of the third connecting piece (701) is less than the distance between the lower edges of the two second accommodating cavities (705).

As shown inFIG.10, the upper edge and lower edges of the rectangular limiting plate (709) form the upper notch (710) and the lower notch (711) respectively. The lengths of the upper notch (710) and the lower notch (711) are equivalent and are both shorter than the width of the rectangular limiting plate (709). The width of the upper notch (710) corresponds to the thickness of the third connecting piece (701). The width of the lower notch (711) corresponds to the thickness of the fourth connecting piece (706).

ComparingFIG.9andFIG.12, the side of the second connecting plate (704), which is facing the seat frame assembly (1), is intersected by the third limiting bolt (712). The third limiting bolt (712) is parallel to the first limiting bolt (703) and the second limiting bolt (708). On the bottom surface of the seat frame assembly (1), there is the first latch (102), which latches onto the footrest plate (402), and the second latch (103), which latches onto one of the first limiting bolt (703), the second limiting bolt (708), or the third limiting bolt (712).

As shown inFIG.13, in the recess of the seat frame assembly (1), there is a front wheel positioning clip (104), which is composed of two vertical and parallel plates, where the ends of the plates flare outwards, away from each other. The distance between the two plates corresponds to the width of the front wheel assembly (6).

The Working Process of the Invention is as Follows:

The initial state is shown inFIG.1. At this time, the user can ride directly and use the control handlebar to control the electric vehicle. The user does not need to lift their leg when getting on the vehicle, and the safety factor is high.

When one does not need to ride, compareFIG.1,FIG.9, andFIG.10, first, press (709) with one's thumb, turn (509) counterclockwise with respect to (7) (according to the viewing angle direction ofFIG.1), and, at this moment, (509) and (510) are right next to each other. Referring toFIG.7andFIG.8, one should pull the upper end of (507) to the right until (505) is separated from (508). At this time, the other hand moves (509) and (510) to rotate clockwise together with respect to (501), then keep both (509) and (510) right next to (402). Continually referring toFIG.1, turn (509), (510), and (402), as a whole, counterclockwise with respect to (3), and then store (509), (510), and (402) together under (1) (N.B. (6) is aligned with (104) to prevent the wheels from moving). Finally, (102) is used to latch onto (402), (103) is latched onto (7), and the state of the vehicle at this time is shown inFIG.11, where the entire electric vehicle is folded.

Referring toFIG.14, since (103) is latched onto (712) on (7) ((712) is hidden by (103) inFIG.14), (509) is physically blocked by (1), and (509) cannot rotate clockwise at this time; if one needs to drag the electric vehicle, one needs to first remove the restriction of (103), and drag (7) outward until (708) is restricted by (103), with the state of the vehicle at this time shown inFIG.15. Then, turn (509) counterclockwise, and then rotate (7) upward, until (509) is pressed by (709) as shown inFIG.16. At this time, the state of the entire electric vehicle is shown inFIG.17, and the user can directly drag the electric vehicle by holding the operating handle to travel.

In summary, the above is only an exemplar working mechanism of the invention and does not limit the scope of protection of the invention. Any equivalent changes and modifications made according to the patent scope of the invention and the content of the description are within the scope covered by the invention patent