Rotary folding frame and rotary folding electric vehicle

Abstract

The invention discloses a rotary folding frame which comprises a first base and a second base, wherein the central positions of the first base and the second base are connected with each other; a front pipe is fixedly connected to the center outside the first base, and a rear pipe is fixedly connected to the center outside the second base. A vertical pipe and a seat pipe are sequentially and rotationally connected to the center position between the two bases; the front pipe, the rear pipe, the vertical pipe and the seat pipe are unfolded to form a frame; a limiting mechanism for rotationally unfolding the front pipe and the rear pipe is arranged between the two bases, a first buckling mechanism for rotationally unfolding the vertical pipe is arranged between the first base and the vertical pipe, and a second buckling mechanism for rotationally unfolding the seat pipe is arranged between the second base and the seat pipe; the first buckle mechanism and the second buckle mechanism are loosened, and the vertical pipe, the seat pipe, the rear pipe and the front pipe are folded to form a parallel folding state. The rotary folding frame is folded through the independent rotary part, the rotary folding track is visual and predictable, the operation is simple and worry-saving, and the folded form is compact and regular; the unfolding action is simple and easy, and the overall structural strength is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a rotary folding frame and a rotary folding electric vehicle. BACKGROUND

[0002] The folding electric vehicle is a kind of micro-travel vehicle, which is easy to store and carry, and saves time and effort when riding. The development of its technology mainly lies in the optimization and lightweight design of the folding frame structure to ensure the stability of the unfolded structure.

[0003] The frame structure of the existing folding electric vehicle usually adopts telescopic folding, horizontal folding and multi-joint composite folding. The telescopic folding structure has poor structural strength and stability after unfolding. The horizontal folding structure is prone to stress concentration at the bending part, and the rigidity is insufficient if a hinge is provided, which affects the stability of operation. The multi-joint composite folding frame structure is complex, with many joints, resulting in increased weight and cost, and the folding operation steps are complicated.

[0004] Therefore, the above technical problems need to be solved. SUMMARY

[0005] The present application provides a rotary folding frame and a rotary folding electric vehicle to solve the above technical problems. The frame is folded by a single rotary part, has a clear rotary shaft, and the rotary folding trajectory is intuitive and predictable. The operation is simple and time-saving. The folded shape is compact and regular. The unfolding action is simple and easy to operate. The whole structure is high in strength and reliable in connection. The front and rear forces are stable and uniform when riding, and the movement is stable.

[0006] To achieve the above purpose, the technical scheme of the present application is:

[0007] A rotary folding frame, comprising a first base and a second base connected to each other at a center position; a front pipe is fixedly connected to the outside center position of the first base; a rear pipe is fixedly connected to the outside center position of the second base; a stand pipe and a seat pipe are sequentially connected in rotation at the center position between the first base and the second base; and a first mounting hole is arranged at the end of the front pipe.

[0008] The front pipe, the rear pipe, the stand pipe and the seat pipe are respectively rotated and unfolded to form a frame; a limiting mechanism for the rotation and unfolding of the front pipe and the rear pipe is arranged between the first base and the second base; a first buckle mechanism for the rotation and unfolding of the stand pipe is arranged between the first base and the stand pipe; and a second buckle mechanism for the rotation and unfolding of the seat pipe is arranged between the second base and the seat pipe.

[0009] The first buckle mechanism and the second buckle mechanism are loosened, and the stand pipe, the seat pipe, the rear pipe and the front pipe are rotated and folded to form a mutual parallel folding state.

[0010] The rotating folding frame is folded by a single rotating part, the front pipe, the rear pipe, the vertical pipe and the seat pipe rotate around the center positions of the first base and the second base respectively, the rotating folding track is intuitive and predictable, the operation is simple and convenient, and the folded shape is compact and regular; the unfolding action is simple and easy to operate, the first buckle mechanism and the second buckle mechanism are automatically buckled and locked, the overall structural strength is high, and the connection is reliable; the overall frame structure is completely simplified and optimized.

[0011] Further optimization scheme, the limiting mechanism includes a limiting pin and a limiting block; the limiting pin is fixedly connected to the inner side of the second base and away from the center position thereof, and the limiting block is arranged at the corresponding position of the inner side of the first base; the limiting pin is supported on the limiting block after the front pipe and the rear pipe are unfolded.

[0012] The limiting pin plays a role of limiting and bearing at the same time, the seat pipe of the frame bears the force during riding, the force is transmitted to the second base, the force on the second base can be transmitted to the first base through the limiting pin; the force on the first base is transmitted to the front wheel through the front pipe, and the force on the second base is transmitted to the rear wheel through the rear pipe, which is beneficial to ensure that the forces on the front and rear of the frame are uniform.

[0013] Further optimization scheme, the first buckle mechanism and the second buckle mechanism respectively include a buckle handle and a buckle groove;

[0014] The buckle handle is hinged in the vertical pipe and the seat pipe, and the buckle groove is arranged in the inner side of the first base and the second base;

[0015] After the vertical pipe and the seat pipe are unfolded, the end of the buckle handle is elastically pressed in the buckle groove to limit the rotation of the vertical pipe and the seat pipe.

[0016] Further optimization scheme, the first buckle mechanism and the second buckle mechanism respectively further include a hinge shaft and a torsional spring; the buckle handle is hinged in the vertical pipe and the seat pipe through the hinge shaft;

[0017] The torsional spring is coaxially connected with the hinge shaft on both sides of the buckle handle, one side of the torsional spring is elastically pressed against the inner side of the buckle handle, and the other side is elastically pressed against the inner wall of the vertical pipe and the seat pipe;

[0018] The elastic force of the torsional spring makes the end of the buckle handle elastically pressed in the buckle groove.

[0019] After the vertical pipe and the seat pipe are unfolded in place, the elastic force of the torsional spring realizes that the buckle handle of the first buckle mechanism is automatically buckled into the buckle groove of the first base, and the buckle handle of the second buckle mechanism is automatically buckled into the buckle groove of the second base, and the vertical pipe and the seat pipe are locked.

[0020] Further optimization scheme, the first buckle mechanism and the second buckle mechanism respectively further include a safety buckle, a safety pin and a connecting pad;

[0021] The safety buckle is arranged on the outer side surface of the buckle handle, the connecting pad is arranged on the inner side of the buckle handle and connected with the safety buckle, and the safety buckle and the connecting pad gap clamps the buckle handle; the torsional spring elastically presses the connecting pad on the inner side of the buckle handle;

[0022] The safety pin is located on the inner side of the buckle handle and connected with the safety buckle; the safety buckle drives the safety pin to move back and forth along the length direction of the buckle handle;

[0023] When the end of the buckle handle is located in the buckle groove, the safety pin is in contact with the inner wall of the stand pipe and the seat pipe, and the end of the buckle handle is locked in the buckle groove;

[0024] The inner wall of the stand pipe and the seat pipe is provided with a safety pin avoiding hole, the safety buckle is pushed outward to make the safety pin located in the avoiding hole, and the end of the buckle handle can be separated from the buckle groove, and the stand pipe and the seat pipe can be rotated and folded.

[0025] The buckle handle of the first buckle mechanism and the second buckle mechanism is provided with a safety buckle and related structure to prevent the buckle handle from being misoperated and ensure safety.

[0026] Further optimization scheme, the first buckle mechanism and the second buckle mechanism respectively include a pull pin and a pin fixing hole;

[0027] The pull pin is elastically arranged on the first base and the second base and away from the center position, and the pin fixing hole is arranged on the stand pipe and the seat pipe;

[0028] After the stand pipe and the seat pipe are unfolded, the pull pin is located in the pin fixing hole to limit the rotation of the stand pipe and the seat pipe.

[0029] Further optimization scheme, the first buckle mechanism and the second buckle mechanism respectively further include a pull pin cap, a first spring and a connecting seat;

[0030] The pull pin cap is connected to one end of the pull pin, the other end of the pull pin has a step; the first spring penetrates the pull pin and one end is supported on the step, and the other end is supported in the pull pin cap, and the first spring is in an elastic compression state; the connecting seat penetrates the pull pin and one end is connected to the pull pin cap, and the other end is connected to the first base and the second base;

[0031] Pulling the pull pin cap outward drives the pull pin to separate from the pin fixing hole, and the stand pipe and the seat pipe can be rotated and folded.

[0032] After the stand pipe and the seat pipe are deployed in place, the elastic force of the first spring enables the pull pin of the first buckle mechanism to be automatically buckled into the pin fixing hole of the stand pipe and the pull pin of the second buckle mechanism to be automatically buckled into the pin fixing hole of the seat pipe, and the stand pipe and the seat pipe are locked.

[0033] In a further optimization, a locking mechanism is provided on the first base and the second base, offset from the center position thereof, which axially tightens the abutting surfaces between the first base, the stand pipe, the seat pipe and the second base, so that sufficient pressing force is provided therebetween to overcome rotation.

[0034] The locking mechanism axially tightens the first base, the stand pipe, the seat pipe and the second base in the unfolded and folded states of the frame, so that the first base, the stand pipe, the seat pipe and the second base cannot rotate relative to each other, thereby ensuring the stability and reliability of the unfolded and folded states of the frame. In particular, in the unfolded state, the rotation between the first base, the stand pipe, the seat pipe and the second base is completely limited, thereby providing redundant safety assurance.

[0035] In a further optimization, the locking mechanism comprises an eccentric handle and a connecting shaft.

[0036] The eccentric handle is arranged outside the first base, the second base is provided with an arc-shaped hole, one end of the connecting shaft is fixed to the second base, the other end of the connecting shaft penetrates through the arc-shaped hole and the first base and is connected to the eccentric handle.

[0037] When the eccentric handle is pressed flat on the first base, the locking mechanism is in a tightened state, and when the eccentric handle is pulled up to be perpendicular to the first base, the locking mechanism is in a relaxed state.

[0038] The arc-shaped hole functions to ensure that the first base and the second base can be unfolded and folded relative to each other.

[0039] In a further optimization, the locking mechanism further comprises a limiting buckle, a second spring and a lock tongue.

[0040] The limiting buckle is located outside the eccentric handle, the lock tongue is located inside the eccentric handle and is connected to the limiting buckle, and the limiting buckle and the lock tongue gap clamps the eccentric handle.

[0041] The second spring is located inside the eccentric handle and is elastically compressed along the length of the limiting buckle.

[0042] The first base is provided with a lock tongue seat; when the eccentric handle is pressed flat, the lock tongue is buckled into the lock tongue seat under the elastic force of the second spring, and the eccentric handle is locked; the limiting buckle is pushed towards the tail of the eccentric handle, the lock tongue is disengaged from the lock tongue seat, and the eccentric handle can be pulled up.

[0043] The eccentric handle of the locking mechanism is provided with a limiting buckle and related structure to prevent the eccentric handle from being misoperated, thus improving safety.

[0044] Further optimization scheme, the first base inside is provided with the first positioning pin of the stand pipe rotating and unfolding in place; the second base inside is provided with the second positioning pin of the seat pipe rotating and unfolding in place.

[0045] The stand pipe is unfolded in place when it encounters the first positioning pin during the rotating and unfolding process, and is locked by the first buckle mechanism; the seat pipe is unfolded in place when it encounters the second positioning pin during the rotating and unfolding process, and is locked by the second buckle mechanism; this is conducive to the accurate execution of the rotating and unfolding action of the stand pipe and the seat pipe.

[0046] Further optimization scheme, the first base, the stand pipe, the seat pipe and the second base are respectively provided with a gasket combination between each other, and the gasket combination is nylon gasket, aluminum gasket and nylon gasket in sequence. The nylon gasket is conducive to ensuring the lubricity of mutual rotation between the two, and is easy to rotate.

[0047] A rotating folding electric vehicle comprising the rotating folding frame of any of the above;

[0048] The end of the stand pipe is provided with a handle, the end of the front pipe is provided with a front wheel, the end of the rear pipe is provided with a rear wheel, and the end of the seat pipe is provided with a seat cushion;

[0049] The rear wheel is integrated with a hub motor, and the inside of the rear pipe is provided with a power battery pack, which is electrically connected to the hub motor to drive the rotation thereof.

[0050] Further optimization scheme, the end of the front pipe is provided with a rotatable single-arm front fork, which is connected with the front wheel on one side; the end of the rear pipe is provided with a single-side rear fork, which is connected with the rear wheel on one side. The single-side connection of the front wheel and the rear wheel is conducive to the compact structure after folding, effectively reducing the volume after folding, and maximizing portability.

[0051] Further optimization scheme, the handle and the stand pipe are connected through a rotatable vertical shaft, and the single-arm front fork has an extension shaft rotatably connected in the first mounting hole;

[0052] Rotatable discs are fixedly arranged on the vertical shaft and the extension shaft respectively, flexible cables are fixedly connected around the two rotatable discs, and the handle steering drives the front wheel steering through the flexible cables.

[0053] The flexible steering system is formed by the two rotatable discs and the flexible cables, which further simplifies the structure and reduces the volume after folding.

[0054] Further optimization scheme, the front pipe is provided with a footboard assembly, the two sides of which have the freedom to fold upward and are limited to fold downward.

[0055] Further optimization scheme, the side of the rear pipe is provided with a side foot support for supporting the rotary folding electric vehicle.

[0056] Further optimization scheme, the center position of the first base and the second base is provided with a rotatable handle assembly which can lift the rotary folding electric vehicle upward.

[0057] Further optimization scheme, one side of the handle is provided with a brake handle, and the front wheel is provided with a hub brake block, and the brake handle drives the hub brake block through a brake wire to brake the front wheel.

[0058] Further optimization scheme, after the rotary folding frame is folded, the two sides of the handle can be folded and supported side by side on the placement surface; the two sides of the handle and the front wheel and the rear wheel are supported on the placement surface, so that the folded electric vehicle is in a standing state.

[0059] The folded electric vehicle can be in a standing state, which is convenient to use and beneficial to placement and storage.

[0060] Compared with the prior art, the rotary folding frame and the rotary folding electric vehicle have the following technical advantages:

[0061] 1. Easy operation, intuitive and predictable folding track

[0062] The frame is folded as a whole through a single rotating part, and the front pipe, the rear pipe, the vertical pipe and the seat pipe rotate around the center of the two bases. This design makes the folding path intuitive, predictable and unique, and the user does not need to adjust multiple times to achieve one-step operation, greatly improving the simplicity and reliability of the folding experience.

[0063] 2. Compact structure, rigidity and portability

[0064] The rotary folding mode realizes the complete simplification of the frame structure, and eliminates the complex linkage structure. Combined with the automatic buckle locking mechanism, high structural strength and connection reliability can be ensured after unfolding. At the same time, the design of single-sided connection of the front and rear wheels cooperates with the folding mechanism, so that the folded shape is more compact, effectively reducing the volume and maximizing the portability.

[0065] 3. Flexible steering system, further optimizing volume

[0066] The flexible steering system composed of double steering wheels and flexible cables replaces the traditional rigid steering head and wire pipe structure. This design not only simplifies the overall layout, but also fully conforms to the folding shape of the frame during folding, avoiding component interference and significantly reducing the folding volume.

[0067] 4. Self-standing storage, good practicality and user experience

[0068] The folded whole vehicle can keep stable standing state, and this characteristic greatly facilitates daily use. The user does not need to find a leaning object or manually hold, and can easily place in the corner of wall, the edge of table or the vehicle compartment, which significantly improves the convenience of storage and actual use experience. BRIEF DESCRIPTION OF DRAWINGS

[0069] Figure 1 is a perspective view of the first embodiment of the rotating folding frame unfolded according to the present application;

[0070] Figure 2 is an exploded view of Figure 1 ;

[0071] Figure 3 is a perspective view of Figure 2 from another angle;

[0072] Figure 4 is a perspective view of the folded frame; Figure 1

[0073] Figure 5 is a perspective view of the first buckle mechanism installed in Figure 1 ;

[0074] Figure 6 is a partial perspective view of the safety buckle related to the first buckle mechanism in Figure 1 ;

[0075] Figure 7 is a perspective view of the first buckle mechanism in Figure 1 ;

[0076] Figure 8 is a perspective view of the torsion spring in Figure 7 ;

[0077] Figure 9 is a perspective view of the locking mechanism in Figure 1 ;

[0078] Figure 10 is an exploded view of Figure 9 ;

[0079] Figure 11 is a perspective view of the second embodiment of the rotating folding frame unfolded according to the present application;

[0080] Figure 12 is an exploded view of Figure 11 ;

[0081] Figure 13 is a perspective view of the first buckle mechanism in Figure 11 ;

[0082] Figure 14 is an exploded view of Figure 13 ;

[0083] ​Figure 15 It is an application Figure 1 A perspective view of a specific embodiment of a rotary folding electric vehicle with a rotary folding frame;

[0084] Figure 16 yes Figure 15 The main view;

[0085] Figure 17 yes Figure 15 A stereogram from another perspective;

[0086] Figure 18 yes Figure 15 A perspective view of the center rear tube hiding a side cover;

[0087] Figure 19 yes Figure 15 A three-dimensional view of the neutral tube after folding;

[0088] Figure 20 yes Figure 19 A three-dimensional image of the seat tube folded flush with the rear tube;

[0089] Figure 21 yes Figure 20 A three-dimensional image after the base is completely folded.

[0090] In the figure: first base 10, buckle groove 11, lock tongue seat 12, first locating pin 13, central axis 14, second base 20, arc-shaped hole 21, second locating pin 22, front tube 30, first mounting hole 31, rear tube 40, power battery pack 41, standpipe 50, avoidance hole 51, pin fixing hole 52, second mounting hole 53, seat tube 60, limiting mechanism 70, limiting pin 71, limiting block 72, first buckle mechanism 80, buckle handle 81, hinge shaft 82, torsion spring 83, safety buckle 84, safety pin 85, connecting gasket 86, pull pin 87, pull pin cap 88, first spring 89, connecting seat 8a, second buckle mechanism 90, locking mechanism A0, eccentric handle A1, connecting shaft A2, limiting buckle A3, second spring A4, lock tongue A5, gasket assembly B0;

[0091] Frame 1, handlebar 2, stem 2a, front wheel 3, rear wheel 4, seat 5, vertical axis 6, single-arm front fork 7, extension axis 7a, single-sided rear fork 8, turntable 9, flexible cable A, foot pedal assembly B, side stand C, handle assembly D, brake lever E, hub brake pads F, brake cable G. DETAILED DESCRIPTION

[0092] The present invention will be described in further detail below with reference to the embodiments in the accompanying drawings.

[0093] like Figures 1 to 10 As shown, the first embodiment of the rotating folding frame of the present invention; Figures 11 to 14As shown, the second embodiment of the rotating folding frame of the present invention; Figures 15 to 21 As shown, the present invention is a specific embodiment of a rotary folding electric vehicle with a rotary folding frame according to the first embodiment.

[0094] like Figure 1 and Figure 2 As shown, the rotating and folding frame 1 of the first embodiment includes a first base 10 and a second base 20 connected to each other at the center. The center of the outer portion of the first base 10 is fixedly connected to the front tube 30, and the center of the outer portion of the second base 20 is fixedly connected to the rear tube 40. The center between the first base 10 and the second base 20 is rotatably connected to the seat tube 50 and the seat tube 60 in sequence. Specifically, the center of the first base 10 and the second base 20 is provided with a central axis 14 that sequentially passes through the front tube 30, the first base 10, the seat tube 50, the seat tube 60, the second base 20 and the rear tube 40 to connect the six.

[0095] like Figure 1 and Figure 2 As shown, the front tube 30, rear tube 40, seat tube 50 and seat tube 60 are rotated and unfolded to form the bicycle frame 1; a limiting mechanism 70 for the rotation and unfolding of the front tube 30 and rear tube 40 is provided between the first base 10 and the second base 20, a first snap mechanism 80 for the rotation and unfolding of the seat tube 50 is provided between the first base 10 and the seat tube 50, and a second snap mechanism 90 for the rotation and unfolding of the seat tube 60 is provided between the second base 20 and the seat tube.

[0096] Release the first buckle mechanism 80 and the second buckle mechanism 90, rotate and fold the vertical tube 50, the seat tube 60, the rear tube 40 and the front tube 30, and form a mutually parallel folded state; the specific folding state is as follows: Figure 4 shown.

[0097] The rotating and folding frame 1 is folded and collapsed by a single rotating portion. The front tube 30, the rear tube 40, the seat tube 50 and the seat tube 60 rotate around the center positions of the first base 10 and the second base 20 respectively. The rotational folding trajectory is intuitive and predictable, the operation is simple and worry-free, and the folded shape is compact and regular; the unfolding action is simple and easy, and the frame is automatically locked by the first snap mechanism 80 and the second snap mechanism 90. The overall structural strength is high and the connection is reliable. The overall frame 1 structure has been thoroughly streamlined and optimized.

[0098] like Figure 2 and Figure 3 As shown, the limiting mechanism 70 includes a limiting pin 71 and a limiting block 72; the limiting pin 71 is fixedly connected to the inner side of the second base 20 and away from its center position, and the limiting block 72 is arranged at a corresponding position on the inner side of the first base 10; after the front tube 30 and the rear tube 40 are unfolded, the limiting pin 71 is supported on the limiting block 72.

[0099] like Figure 3As shown, the limiting block 72 is provided with a groove half-wrapping limiting pin 71, which is beneficial for accurate positioning of the limiting pin 71 and stable positioning without slipping.

[0100] The limiting pin 71 simultaneously plays a role of limiting and bearing, and the seat tube 60 of the frame 1 bears a force during riding, which is transmitted to the second base 20, and the force on the second base 20 can be transmitted to the first base 10 through the limiting pin 71; the force on the first base 10 is transmitted to the front wheel 3 through the front tube 30, and the force on the second base 20 is transmitted to the rear wheel 4 through the rear tube 40, which is beneficial for ensuring that the front and rear forces of the frame 1 are uniform.

[0101] As shown in Figure 5 , Figure 6 and Figure 7 , the first buckle mechanism 80 and the second buckle mechanism 90 respectively include a buckle handle 81 and a buckle groove 11; the buckle handle 81 is hinged in the stand tube 50 and the seat tube 60, and the buckle groove 11 is arranged on the inner side of the first base 10 and the second base 20.

[0102] As shown in Figure 1 , after the stand tube 50 and the seat tube 60 are unfolded, the end of the buckle handle 81 is elastically pressed in the buckle groove 11 to limit the rotation of the stand tube 50 and the seat tube 60.

[0103] As shown in Figure 7 and Figure 8 , the first buckle mechanism 80 and the second buckle mechanism 90 respectively further include a hinge shaft 82 and a torsional spring 83; the buckle handle 81 is hinged in the stand tube 50 and the seat tube 60 through the hinge shaft 82.

[0104] As shown in Figure 6 , the torsional spring 83 is coaxially connected with the hinge shaft 82 on both sides of the buckle handle 81, one side of the torsional spring 83 is elastically pressed on the inner side of the buckle handle 81, and the other side is elastically pressed on the inner wall of the stand tube 50 and the seat tube 60; the elastic force of the torsional spring 83 makes the end of the buckle handle 81 elastically pressed in the buckle groove 11.

[0105] After the stand tube 50 and the seat tube 60 are unfolded in place, the elastic force of the torsional spring 83 realizes that the buckle handle 81 of the first buckle mechanism 80 is automatically buckled into the buckle groove 11 of the first base 10 and the buckle handle 81 of the second buckle mechanism 90 is automatically buckled into the buckle groove 11 of the second base 20, and the stand tube 50 and the seat tube 60 are locked.

[0106] As shown in Figure 7As shown, the first and second buckle mechanisms 80 and 90 respectively further comprise a safety catch 84, a safety pin 85 and a connecting pad 86; the safety catch 84 is arranged on the outer side surface of the buckle handle 81, the connecting pad 86 is arranged on the inner side of the buckle handle 81 and connected with the safety catch 84, the safety catch 84 and the connecting pad 86 gap clamp the buckle handle 81; the torsion spring 83 elastically presses the connecting pad 86 on the inner side of the buckle handle 81.

[0107] As shown, Figure 7 the safety pin 85 is located on the inner side of the buckle handle 81 and connected with the safety catch 84; the safety catch 84 drives the safety pin 85 to move back and forth along the length direction of the buckle handle 81.

[0108] As shown, Figure 6 when the end of the buckle handle 81 is located in the buckle groove 11, the safety pin 85 is in contact with the inner wall of the stand pipe 50 and the seat pipe 60, and the end of the buckle handle 81 is locked in the buckle groove 11.

[0109] As shown, Figure 6 the inner wall of the stand pipe 50 and the seat pipe 60 is provided with a safety pin 85 avoiding hole 51, and the safety catch 84 is pushed outward to make the safety pin 85 located in the avoiding hole 51, so that the end of the buckle handle 81 can be separated from the buckle groove 11, and the stand pipe 50 and the seat pipe 60 can be rotated and folded.

[0110] The buckle handle 81 of the first and second buckle mechanisms 80 and 90 is provided with the safety catch 84 and related structure to ensure that the buckle handle 81 will not be mis operated and ensure safety.

[0111] As shown, Figure 1 and Figure 2 the first and second bases 10 and 20 are provided with a locking mechanism A0 deviated from the center position, which axially tightens the contact surface between the first base 10, the stand pipe 50, the seat pipe 60 and the second base 20, so that they have enough pressing force to overcome the rotation.

[0112] The locking mechanism A0 axially tightens the first base 10, the stand pipe 50, the seat pipe 60 and the second base 20 in the unfolded and folded state of the frame 1, so that they cannot rotate with each other, ensuring the stability and reliability of the unfolded and folded state of the frame 1; especially in the unfolded state, the rotation between them is completely limited, providing redundant safety guarantee.

[0113] As shown, Figure 2 and Figure 9As shown, the locking mechanism A0 includes eccentric handle A1 and connecting shaft A2; eccentric handle A1 is arranged outside the first base 10, the second base 20 is provided with an arc-shaped hole 21, one end of the connecting shaft A2 is fixed on the second base 20, the other end penetrates the arc-shaped hole 21 and the first base 10 and is connected with the eccentric handle A1. The arc-shaped hole 21 ensures that the first base 10 and the second base 20 can be rotated and unfolded and folded.

[0114] When the eccentric handle A1 is pressed flat on the first base 10, the locking mechanism A0 is in a tightened state, and when the eccentric handle A1 is pulled up to be perpendicular to the first base 10, the locking mechanism A0 is in a relaxed state.

[0115] As shown in Figure 9 and Figure 10 , the locking mechanism A0 further includes a limiting buckle A3, a second spring A4 and a lock tongue A5; the limiting buckle A3 is located outside the eccentric handle A1, the lock tongue A5 is located inside the eccentric handle A1 and is connected with the limiting buckle A3, the limiting buckle A3 and the lock tongue A5 gap clamps the eccentric handle A1; the second spring A4 is located inside the eccentric handle A1 and is elastically compressed along the length on the limiting buckle A3.

[0116] As shown in Figure 2 , the first base 10 is provided with a lock tongue seat 12; when the eccentric handle A1 is pressed flat, the lock tongue A5 is buckled into the lock tongue seat 12 under the action of the elastic force of the second spring A4, and the eccentric handle A1 is locked; the limiting buckle A3 is pushed to the tail of the eccentric handle A1, the lock tongue A5 is separated from the lock tongue seat 12, and the eccentric handle A1 can be pulled up.

[0117] The limiting buckle A3 and related structure are provided on the eccentric handle A1 of the locking mechanism A0 to ensure that the eccentric handle A1 cannot be misoperated, which is beneficial to safety.

[0118] As shown in Figure 3 , the first base 10 is provided with a first positioning pin 13 for rotating and unfolding the vertical pipe 50; the second base 20 is provided with a second positioning pin 22 for rotating and unfolding the horizontal pipe 60.

[0119] When the vertical pipe 50 encounters the first positioning pin 13 during the rotating and unfolding process, it is unfolded to the position, and at the same time the vertical pipe 50 is locked by the first buckle mechanism 80; when the horizontal pipe 60 encounters the second positioning pin 22 during the rotating and unfolding process, it is unfolded to the position, and at the same time the horizontal pipe 60 is locked by the second buckle mechanism 90; which is beneficial to the accurate execution of the rotating and unfolding action of the vertical pipe 50 and the horizontal pipe 60.

[0120] As shown in Figure 2 and Figure 3As shown, the first base 10, the stand pipe 50, the seat pipe 60 and the second base 20 are respectively provided with a gasket combination B0, and the gasket combination B0 is nylon gasket, aluminum gasket and nylon gasket in sequence. The nylon gasket is beneficial to ensure the lubricity of mutual rotation between the two, and is easy to rotate the part to be jammed.

[0121] As shown in the drawings, Figures 11 to 14 The second embodiment of the rotating folding frame 1 of the application is different from the first embodiment in that the structures of the first buckle mechanism 80 and the second buckle mechanism 90 are different.

[0122] As shown in the drawings, Figure 11 and Figure 12 The first buckle mechanism 80 and the second buckle mechanism 90 of the rotating folding frame 1 of the second embodiment respectively include a draw pin 87 and an eccentric handle A1; the draw pin 87 is elastically and penetratively arranged on the first base 10 and the second base 20 and is away from the central position thereof; the eccentric handle A1 is arranged on the stand pipe 50 and the seat pipe 60; after the stand pipe 50 and the seat pipe 60 are unfolded, the draw pin 87 is located in the eccentric handle A1 to limit the rotation of the stand pipe 50 and the seat pipe 60.

[0123] As shown in the drawings, Figure 13 and Figure 14 The first buckle mechanism 80 and the second buckle mechanism 90 of the rotating folding frame 1 of the second embodiment respectively further include a draw pin cap 88, a first spring 89 and a connecting seat 8a.

[0124] As shown in the drawings, Figure 14 The draw pin cap 88 is connected to one end of the draw pin 87, and the other end of the draw pin 87 has a step; the first spring 89 penetrates the draw pin 87 and one end of the first spring 89 is supported on the step, and the other end of the first spring 89 is supported in the draw pin cap 88, and the first spring 89 is in an elastic compression state; the connecting seat 8a penetrates the draw pin 87 and one end of the connecting seat 8a is connected to the draw pin cap 88, and the other end of the connecting seat 8a is connected to the first base 10 and the second base 20; the draw pin cap 88 is pulled outward to drive the draw pin 87 to be separated from the eccentric handle A1, and the stand pipe 50 and the seat pipe 60 can be rotated and folded.

[0125] After the stand pipe 50 and the seat pipe 60 are unfolded to the position, the draw pin 87 of the first buckle mechanism 80 is automatically buckled into the eccentric handle A1 of the stand pipe 50 and the draw pin 87 of the second buckle mechanism 90 is automatically buckled into the eccentric handle A1 of the seat pipe 60 by the elastic force of the first spring 89, and the stand pipe 50 and the seat pipe 60 are locked.

[0126] As shown in the drawings, Figures 15 to 21 The application further discloses a rotating folding electric vehicle, which comprises the rotating folding frame 1 of the first embodiment.

[0127] As shown in the drawings, Figure 15 , Figure 16 and Figure 17As shown, a handlebar 2 is provided at the end of the seat tube 50 , a front wheel 3 is provided at the end of the front tube 30 , a rear wheel 4 is provided at the end of the rear tube 40 and the rear wheel 4 is integrated with a hub motor, and a seat cushion 5 is provided at the end of the seat tube 60 .

[0128] The handlebars 2 are foldable, extending outward and parallel to the seat tube 50. Elastic, outward-facing telescopic sleeves are mounted on each side of the handlebars 2. When deployed, the sleeves lock the handlebars 2, preventing them from folding. The handlebars 2 can be folded by pushing the sleeves toward the center to release the lock.

[0129] like Figure 18 As shown, a power battery pack 41 is provided inside the rear tube 40 , and the power battery pack 41 is electrically connected to the hub motor to drive the rotation thereof.

[0130] like Figure 15 As shown, a rotatable single-arm front fork 7 is provided at the end of the front tube 30, and the single-arm front fork 7 is connected to one side of the front wheel 3. Figure 16 and Figure 18 As shown, the end of the rear tube 40 is provided with a unilateral rear fork 8 connected to the rear wheel 4. Both the front wheel 3 and the rear wheel 4 are connected on one side, which is conducive to a compact structure after folding, effectively reducing the volume after folding and maximizing portability.

[0131] like Figure 1 and Figure 2 As shown, a first mounting hole 31 is provided at the end of the front tube 30 ; a second mounting hole 53 is provided at the end of the stand tube 50 .

[0132] like Figure 15 and Figure 17 As shown, the handlebar 2 and seat tube 50 are connected via a rotatable vertical shaft 6 and stem 2a. One end of the stem 2a is connected to the center of the handlebar 2, and the other end is connected to the vertical shaft 6. The vertical shaft 6 is rotatably connected to the second mounting hole 53 of the seat tube 50. A single-arm front fork 7 has an extended shaft 7a rotatably connected to the first mounting hole 31 of the head tube 30. Turntables 9 are fixed to the vertical shaft 6 and the extended shaft 7a, respectively. Flexible cables A are fixedly connected around the two turntables 9. Turning the handlebars drives the front wheel 3 through the flexible cables A.

[0133] A flexible steering system is formed by two turntables 9 and the flexible cable A, which further simplifies the structure and has a small volume after folding.

[0134] like Figure 17 and Figure 19 As shown, a footrest assembly B is provided on the front tube 30 , and both sides of the footrest assembly B have the freedom to fold upwards and are restricted from folding downwards.

[0135] like Figure 15 As shown, a side stand C is provided on the rear tube 40 for laterally supporting the rotating and folding electric vehicle.

[0136] As Figure 15 and Figure 21 shown, the center position of the first base 10 and the second base 20 is provided with a rotatable handle assembly D, which can be lifted upward to rotate and fold the electric vehicle.

[0137] As Figure 15 shown, one side of the handlebar 2 is provided with a brake handle E, and the front wheel 3 is provided with a hub brake block F. The brake handle E drives the hub brake block F through the brake wire G to brake the front wheel 3.

[0138] As Figure 21 shown, after the folding of the rotating folding frame 1, the two sides of the handlebar 2 can be folded and supported side by side on the placement surface; the two sides of the handlebar 2 and the front wheel 3 and the rear wheel 4 are supported on the placement surface to make the folded electric vehicle stand in a standing state.

[0139] The folding steps of the rotating folding electric vehicle are as follows:

[0140] 1. Push the telescopic sleeve to the middle respectively to unlock the handlebar 2, fold the two sides of the handlebar 2 upward, and fold the two sides of the handlebar 2 upward (as shown in Figure 19 );

[0141] 2. Push the limiting buckle A3 of the locking mechanism A0 to the tail to unlock the eccentric handle A1, pull the eccentric handle A1 to make it vertical, and unlock the locking mechanism A0 to the frame 1;

[0142] 3. Push the safety buckle 84 of the first buckle mechanism 80 to the tail to unlock the buckle handle 81, press the buckle handle 81 downward to make it separate from the buckle groove 11 of the stand pipe 50, and rotate the stand pipe 50 downward to make it parallel to the front pipe 30 (as shown in Figure 19 );

[0143] 4. Push the safety buckle 84 of the second buckle mechanism 90 to the tail to unlock the buckle handle 81, press the buckle handle 81 downward to make it separate from the buckle groove 11 of the seat pipe 60, and rotate the seat pipe 60 downward to make it parallel to the rear pipe 40 (as shown in Figure 20 );

[0144] 5. Lift the electric vehicle through the handle assembly D, make the front wheel 3 and the rear wheel 4 parallel, press the eccentric handle A1 of the locking mechanism A0 to make the folded frame 1 locked, and finally fold the side kickstand C to complete the folding action. The folded electric vehicle is in a standing state (as shown in Figure 21 ).

[0145] The unfolding steps of the rotating folding electric vehicle are as follows:

[0146] 1. Push the limiting buckle A3 of the locking mechanism A0 to the tail to unlock the eccentric handle A1, pull the eccentric handle A1 to make it vertical;

[0147] 2. Open the front wheel 3 and the rear wheel 4, i.e. unfold the front tube 30 and the rear tube 40 into place (as shown in Figure 20 );

[0148] 3. Pull up the seat cushion 5, i.e. unfold the seat tube 60 into place, at this time the buckle handle 81 of the second buckle mechanism 90 is automatically buckled into the buckle groove 11 of the seat tube 60, and the buckle handle 81 is automatically in the locked state (as shown in Figure 19 );

[0149] 4. After rotating the stand tube 50 upward into place, the buckle handle 81 of the first buckle mechanism 80 is automatically buckled into the buckle groove 11 of the stand tube 50, and the buckle handle 81 is automatically in the locked state (as shown in Figure 15 );

[0150] 5. Unfold the two sides of the handlebar 2, the telescopic sleeve is automatically locked on both sides of the handlebar 2; flatten the two sides of the foot pedal assembly B; open the side footrest C; finally, press the eccentric handle A1 of the locking mechanism A0 to lock the unfolded frame 1, and the eccentric handle A1 is automatically in the locked state after being pressed flat; complete the entire unfolding action (as shown in Figure 15 ).

[0151] The rotating folding frame and the rotating folding electric vehicle have the following advantages: the frame is folded by a single rotating part, has a clear rotating shaft, and has an intuitive and predictable rotating folding track, so that the operation is simple and labor-saving, and the folded shape is compact and regular; the unfolding action is simple and easy to operate, the whole structure has high strength and reliable connection, and is automatically buckled and locked; the front and rear forces are stable and uniform during riding, and the motion is stable.

[0152] In summary, the present application, as described in the specification and drawings, is made into an actual sample and tested for multiple uses. The test results prove that the application can achieve the expected purpose and has no doubt about its practicality. The above examples are only used to facilitate the description of the content of the application and do not limit its form; any person skilled in the art who does not deviate from the technical features and similar features of the present application can make equivalent embodiments by using the disclosed technical content, which are within the scope of protection of the present application.

Claims

1. A rotary folding frame (1) characterized in that: The first base (10) and the second base (20) are connected with each other at the center positions; the first base (10) is fixedly connected with the front pipe (30) at the outer center position; the second base (20) is fixedly connected with the rear pipe (40) at the outer center position; the first base (10) and the second base (20) are sequentially and rotatably connected with the vertical pipe (50) and the seat pipe (60) at the center positions; the end of the front pipe (30) is provided with the first mounting hole (31); The front pipe (30), the rear pipe (40), the vertical pipe (50) and the seat pipe (60) are respectively rotated and unfolded to form the frame (1); the first base (10) and the second base (20) are provided with the limiting mechanism (70) for the rotation and unfolding of the front pipe (30) and the rear pipe (40); the first base (10) and the vertical pipe (50) are provided with the first buckle mechanism (80) for the rotation and unfolding of the vertical pipe (50); the second base (20) and the seat pipe are provided with the second buckle mechanism (90) for the rotation and unfolding of the seat pipe (60); The first buckle mechanism (80) and the second buckle mechanism (90) are loosened, and the vertical pipe (50), the seat pipe (60), the rear pipe (40) and the front pipe (30) are rotated and folded to form a parallel folding state.

2. The rotary folding frame (1) according to claim 1, characterized in that The limiting mechanism (70) comprises the limiting pin (71) and the limiting block (72); the limiting pin (71) is fixedly connected to the inner side of the second base (20) and away from the center position; the limiting block (72) is arranged at the corresponding position of the inner side of the first base (10); the limiting pin (71) is supported on the limiting block (72) after the front pipe (30) and the rear pipe (40) are unfolded.

3. The rotary folding frame (1) according to claim 1, characterized in that, The first buckle mechanism (80) and the second buckle mechanism (90) respectively comprise the buckle handle (81) and the buckle groove (11); The buckle handle (81) is hinged in the vertical pipe (50) and the seat pipe (60); the buckle groove (11) is arranged in the inner side of the first base (10) and the second base (20); After the vertical pipe (50) and the seat pipe (60) are unfolded, the end of the buckle handle (81) is elastically pressed in the buckle groove (11) to limit the rotation of the vertical pipe (50) and the seat pipe (60).

4. The rotary folding frame (1) according to claim 3, characterized in that The first buckle mechanism (80) and the second buckle mechanism (90) respectively further comprise the hinge shaft (82) and the torsional spring (83); the buckle handle (81) is hinged in the vertical pipe (50) and the seat pipe (60) through the hinge shaft (82); The torsional spring (83) is coaxially connected with the hinge shaft (82) on both sides of the buckle handle (81); one side of the torsional spring (83) is elastically pressed on the inner side of the buckle handle (81), and the other side is elastically pressed on the inner wall of the vertical pipe (50) and the seat pipe (60); the elastic force of the torsional spring (83) makes the end of the buckle handle (81) elastically pressed in the buckle groove (11).

5. The rotary folding frame (1) according to claim 4, characterized in that The first buckle mechanism (80) and the second buckle mechanism (90) respectively further comprise the safety buckle (84), the safety pin (85) and the connecting gasket (86). The safety buckle (84) is arranged on the outer surface of the buckle handle (81), the connecting gasket (86) is arranged on the inner side of the buckle handle (81) and connected to the safety buckle (84), and the gap between the safety buckle (84) and the connecting gasket (86) clamps the buckle handle (81); the torsion spring (83) elastically presses the connecting gasket (86) against the inner side of the buckle handle (81); The safety pin (85) is located inside the buckle handle (81) and is connected to the safety buckle (84); the safety buckle (84) drives the safety pin (85) to move back and forth along the length direction of the buckle handle (81); When the end of the buckle handle (81) is located in the buckle groove (11), the safety pin (85) presses against the inner walls of the riser (50) and the seat tube (60), and the end of the buckle handle (81) is locked in the buckle groove (11); An escape hole (51) for the safety pin (85) is provided on the inner wall of the vertical tube (50) and the seat tube (60). When the safety buckle (84) is pushed outward so that the safety pin (85) is located in the escape hole (51), the end of the buckle handle (81) can be separated from the buckle groove (11), and the vertical tube (50) and the seat tube (60) can be rotated and folded.

6. The rotary folding frame (1) according to claim 1, characterized in that, The first snap mechanism (80) and the second snap mechanism (90) respectively include a pull pin (87) and a pin fixing hole (52); The pull pin (87) is elastically provided on the first base (10) and the second base (20) and is away from the center thereof, and the pin fixing hole (52) is provided on the stand pipe (50) and the seat pipe (60); After the stand tube (50) and the seat tube (60) are unfolded, the pull pin (87) is located in the pin fixing hole (52) to limit the rotation of the stand tube (50) and the seat tube (60).

7. A rotary folding frame (1) according to claim 6, characterized in that The first snap mechanism (80) and the second snap mechanism (90) also include a pin cap (88), a first spring (89) and a connecting seat (8a), respectively. The pull pin cap (88) is connected to one end of the pull pin (87), and the other end of the pull pin (87) has a step; the first spring (89) passes through the pull pin (87) and is supported on the step at one end, and supported in the pull pin cap (88) at the other end, and the first spring (89) is in an elastically compressed state; the connecting seat (8a) passes through the pull pin (87) and is connected to the pull pin cap (88) at one end, and the other end of the connecting seat (8a) is connected to the first base (10) and the second base (20); Pulling the pull pin cap (88) outward drives the pull pin (87) to disengage from the pin fixing hole (52), and the stand tube (50) and the seat tube (60) can be rotated and folded.

8. The rotary folding frame (1) according to claim 1, characterized in that, The first base (10) and the second base (20) are provided with a locking mechanism (A0) deviated from the center position, which axially tightens the fitting surface between the first base (10), the riser (50), the seat pipe (60) and the second base (20), so that they have enough compression force to overcome rotation.

9. The rotary folding frame (1) according to claim 8, characterized in that The locking mechanism (A0) comprises an eccentric handle (A1) and a connecting shaft (A2); The eccentric handle (A1) is arranged outside the first base (10), the second base (20) is provided with an arc-shaped hole (21), one end of the connecting shaft (A2) is fixed on the second base (20), the other end penetrates through the arc-shaped hole (21) and the first base (10) and is connected with the eccentric handle (A1); When the eccentric handle (A1) is pressed flat on the first base (10), the locking mechanism (A0) is in a tightened state, and when the eccentric handle (A1) is pulled up to be perpendicular to the first base (10), the locking mechanism (A0) is in a relaxed state.

10. The rotary folding frame (1) according to claim 9, characterized in that The locking mechanism (A0) further comprises a limiting buckle (A3), a second spring (A4) and a lock tongue (A5); The limiting buckle (A3) is located outside the eccentric handle (A1), the lock tongue (A5) is located inside the eccentric handle (A1) and is connected with the limiting buckle (A3), and the limiting buckle (A3) and the lock tongue (A5) gap clamps the eccentric handle (A1); The second spring (A4) is located inside the eccentric handle (A1) and is elastically compressed along the length on the limiting buckle (A3); The first base (10) is provided with a lock tongue seat (12); when the eccentric handle (A1) is pressed flat, the lock tongue (A5) is buckled into the lock tongue seat (12) under the action of the elastic force of the second spring (A4), and the eccentric handle (A1) is locked; pushing the limiting buckle (A3) to the tail of the eccentric handle (A1), the lock tongue (A5) is separated from the lock tongue seat (12), and the eccentric handle (A1) can be pulled up.

11. The rotary folding frame (1) according to claim 1, characterized in that, The inside of the first base (10) is provided with a first positioning pin (13) for the rotation and expansion of the riser (50) to the position; the inside of the second base (20) is provided with a second positioning pin (22) for the rotation and expansion of the seat pipe (60) to the position.

12. The rotary folding frame (1) according to claim 1, characterized in that, The first base (10), the riser (50), the seat pipe (60) and the second base (20) are respectively provided with a gasket combination (B0) between each other, and the gasket combination (B0) comprises a nylon gasket, an aluminum gasket and a nylon gasket in sequence.

13. A rotary folding electric vehicle characterized by: The rotating folding frame (1) comprises the first base (10), the riser (50), the seat pipe (60) and the second base (20); The end of the riser (50) is provided with a handle (2), the end of the front pipe (30) is provided with a front wheel (3), the end of the rear pipe (40) is provided with a rear wheel (4), and the end of the seat pipe (60) is provided with a seat cushion (5); The rear wheel (4) is integrated with a hub motor, the inside of the rear pipe (40) is provided with a power battery pack (41), and the power battery pack (41) is electrically connected with the hub motor to drive the rotation of the hub motor.

14. The rotating folding electric vehicle of claim 13, wherein, The end of the front pipe (30) is provided with a rotatable single-arm front fork (7) which is connected with the front wheel (3) on one side; the end of the rear pipe (40) is provided with a single-arm rear fork (8) which is connected with the rear wheel (4) on one side.

15. The rotating folding electric vehicle of claim 14, wherein, The handlebar (2) is connected with the vertical pipe (50) through a rotatable vertical shaft (6), and the single-arm front fork (7) has an extension shaft (7a) which is rotatably connected in the first mounting hole (31); The vertical shaft (6) and the extension shaft (7a) are respectively provided with a rotating disc (9) fixed thereon, and two rotating discs (9) are fixedly connected with a flexible cable (A) therearound, so that the steering of the handlebar drives the front wheel (3) to steer through the flexible cable (A).

16. The rotating folding electric vehicle of claim 13, wherein, The front pipe (30) is provided with a foot pedal assembly (B) which has a folding degree upward and is limited to fold downward.

17. The rotating folding electric vehicle of claim 13, wherein, The rear pipe (40) is provided with a side kickstand (C) which is used to support the rotating folding electric vehicle on one side.

18. The rotating folding electric vehicle of claim 13, wherein, The center positions of the first base (10) and the second base (20) are provided with a rotatable handle assembly (D) which can lift the rotating folding electric vehicle upward.

19. The rotating folding electric vehicle of claim 13, wherein, One side of the handlebar (2) is provided with a brake handle (E), and the front wheel (3) is provided with a hub brake block (F), so that the brake handle (E) drives the hub brake block (F) to brake the front wheel (3) through a brake cable (G).

20. The rotating folding electric vehicle of claim 13, wherein, After the rotating folding frame (1) is folded, the two sides of the handlebar (2) can be folded and supported side by side on a placement surface; the two sides of the handlebar (2) and the front wheel (3) and the rear wheel (4) are supported on the placement surface together, so that the folded electric vehicle is in a standing state.

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