Folding electric vehicle capable of automatically returning direction

Abstract

The utility model relates to a folding electric vehicle capable of automatically aligning. The folding electric vehicle comprises a front frame, a rear frame and a linkage rod, the front frame comprises a front underframe, a direction control assembly and a locking assembly, wherein the direction control assembly and the locking assembly are rotationally installed on the front underframe, and the locking assembly is provided with a holding part and a clamping hook part. The rear frame comprises a rear underframe, a hinge support rotationally installed on the rear underframe, a seat arranged on the hinge support and a power assembly arranged on the rear underframe. The front bottom frame is hinged to the rear bottom frame, the linkage rod is rotationally installed on the rear bottom frame through a lock column, one end of the linkage rod is hinged to the direction operation assembly, a lock block is arranged at the other end of the linkage rod, one end of the hinge support is hinged to the rear bottom frame, and the other end of the hinge support is hinged to the front bottom frame. A linkage effect can be formed among the front bottom frame, the rear bottom frame, the direction control assembly, the linkage rod and the hinged support, and the electric scooter can be stored only through one-time folding.

Description

Technical Field

[0001] The utility model relates to the field of electric scooters, and in particular to a foldable electric scooter which can automatically return to its normal direction. Background Art

[0002] With the acceleration of urbanization and the quickening pace of life, convenient and environmentally friendly modes of travel are increasingly popular. For short-distance travel, foldable electric scooters have emerged, combining convenience, environmental friendliness, and practicality. While there are many types of electric scooters on the market, they are generally difficult to fold. They typically require multiple folding cycles to store, and whether folding or unfolding, the handlebars must be adjusted and the foldable area must be locked. Existing locking mechanisms are complex and costly, significantly impacting the user experience. Utility Model Content

[0003] In view of this, the utility model provides a foldable electric vehicle which only needs to be folded once, has a simple and efficient locking structure and can automatically return to the correct direction.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A folding electric vehicle capable of automatically returning to the correct direction comprises a front frame, a rear frame and a linkage rod; the front frame comprises a front chassis, and a direction control assembly and a locking assembly rotatably mounted on the front chassis, the locking assembly having a gripping portion and a hook portion; the rear frame comprises a rear chassis, an articulated bracket rotatably mounted on the rear chassis, a seat provided on the articulated bracket, and a power assembly provided on the rear chassis; the front chassis is hinged to the rear chassis, the linkage rod is rotatably mounted on the rear chassis via a lock column, and the linkage rod One end is hinged to the direction operating component and the other end is provided with a locking block. One end of the articulated bracket is hinged to the rear base frame and the other end is hinged to the front base frame. The direction control component includes a crossbeam, two front wheel groups rotatably mounted at both ends of the crossbeam, and a control handle provided on the crossbeam. The front base frame and the linkage rod are respectively hinged to different parts of the crossbeam. An extension bracket is provided on the crossbeam, and a guide wheel is rotatably mounted on the extension bracket. A guide plate is provided on the linkage rod, and a guide groove opposite to the guide wheel is provided on the guide plate.

[0006] Wherein, when the front frame and the rear frame are unfolded, the hook portion is engaged with the lock column; when the front frame and the rear frame are folded, the hook portion is engaged with the lock block.

[0007] In the above technical solution, since the front chassis is hinged to the rear chassis, the steering control assembly is rotatably connected to the front chassis, and the linkage rod is hinged to the rear chassis and the steering control assembly at the same time, and the articulated bracket is connected to the front chassis, therefore, relatively rotating components can be generated, that is, a linkage effect will be formed between the front chassis, the rear chassis, the steering control assembly, the linkage rod and the articulated bracket. When the front chassis rotates relative to the rear chassis, the steering control assembly, the linkage rod and the articulated bracket will be synchronously driven to fold synchronously. Therefore, only one folding is needed to complete the storage of the electric scooter. The operation is simple and efficient. The vehicle can be quickly folded to a compact state, which is convenient for carrying and storage, and reduces space occupancy.

[0008] Secondly, the design of the locking assembly ensures the stability of the front and rear frames when unfolded or folded. When the frames are unfolded, the hook in the locking assembly snaps onto the lock post, locking the relative position of the front and rear frames and the entire linkage mechanism, ensuring stability after unfolding. Similarly, when the frames are folded, the hook snaps onto the lock block, locking the entire linkage mechanism and ensuring stability after folding. This effectively prevents accidental folding or unfolding of the vehicle during use, improving safety.

[0009] In addition, the guide groove can play a role in direction correction. When the frame needs to be folded, no matter what angle the crossbeam is at, the guide wheel will rotate synchronously relative to the guide plate because the crossbeam needs to rotate relative to the front chassis and the linkage rod during folding. During the rotation, it will be squeezed by the guide groove and gradually return to the center of the guide groove, thereby realizing automatic direction correction when the vehicle is folded, which is more conducive to the rapid folding of the vehicle and improves the user experience.

[0010] Optionally, in a possible implementation, the guide groove is a gradient structure with both ends gradually tilted toward the center.

[0011] In the above technical solution, when the crossbeam is in the straight driving position of the vehicle, the guide wheel is opposite to the center position of the guide groove. When the vehicle is folded, the guide wheel will roll along the groove wall of the guide groove until it rolls to the center position. This structure can make the vehicle's direction correction a linear process, which is more stable and efficient.

[0012] Optionally, in a possible implementation, a limiting boss is provided on the front frame, and a tension spring is connected between the limiting boss and the hook portion, and the tension spring is used to pull the hook portion so that the hook portion abuts against the limiting boss.

[0013] In the above technical solution, the hook portion is connected to the limiting boss via a tension spring, ensuring that the hook portion is always subjected to a force acting in the direction of the limiting boss, effectively enhancing the connection stability between the hook portion and the limiting boss and reducing the risk of the hook portion being separated from the limiting boss due to bumps or vibrations. In addition, when the hook portion is engaged with the lock post, the tension spring will always tighten the hook portion to prevent it from being separated from the lock post, thereby achieving the locking of the front and rear chassis. It can also realize the automatic locking function. During the deployment process, when the hook portion contacts the lock post, the lock post will squeeze the hook portion sideways until the hook portion is engaged with the lock post, resulting in a fast and stable locking method.

[0014] Optionally, in a possible implementation, two groups of crank-connecting rod assemblies are symmetrically provided on the crossbeam, and the two groups of crank-connecting rod assemblies are respectively connected to the two front wheel groups.

[0015] In the above technical solution, the two symmetrically arranged crank-connecting rod assemblies can ensure that the front wheel group is evenly stressed during turning, thereby greatly improving the stability of the scooter during movement. The symmetrical structure also helps to reduce vibration and wear caused by imbalance, further extending the service life of the scooter.

[0016] Optionally, in a possible implementation, the control handle includes a telescopic rod, a control panel and two handles, one end of the telescopic rod is arranged on the crossbeam, and the other end is connected to the control panel, and the two handles are respectively arranged on opposite sides of the control panel.

[0017] In the above technical solution, the telescopic rod design in the control handle allows the user to adjust the height of the handle according to his or her own height and needs, thereby ensuring that each operator can control the equipment in the most comfortable posture. This not only improves the operating comfort, but also helps to reduce the fatigue caused by long-term operation. It can also further compress the folded structure when folded and stored, making the scooter more compact after folding.

[0018] Optionally, in one possible implementation, the power assembly includes a motor, a transmission box connected to the output shaft of the motor, a main shaft connected to the transmission box, rear wheels rotatably mounted at both ends of the main shaft, and a battery pack for powering the motor.

[0019] In this technical solution, the direct connection between the motor and the transmission ensures efficient power transmission and reduces energy loss during the transfer process. The gears or drive belt design within the transmission further adjusts and optimizes power output, ensuring stable and efficient rotation of the rear wheels. The transmission design allows for adjustment of the output gear ratio based on actual needs, thereby varying the rear wheel speed and torque to suit different usage scenarios.

[0020] Optionally, in a possible implementation, the front base frame includes two parallel front support rods, the rear base frame includes two parallel rear support rods, the two front support rods are hinged to the two rear support rods respectively, and the linkage rod and the hook portion are two groups corresponding to the two front support rods and the rear support rods.

[0021] In the above technical solution, the front and rear chassis are respectively composed of two parallel front and rear support rods, and the two front and two rear support rods are hinged to each other, allowing the entire chassis to be easily folded. This not only facilitates the transportation and storage of the equipment, but also allows the equipment to be quickly deployed and put into use when needed. In addition, the design of two sets of linkage rods and hooks makes the operation of the equipment even simpler. Users can fold, unfold, and adjust the chassis through simple operations such as rotating or pulling certain parts, such as the grip, without the need for complex tools or steps.

[0022] Optionally, in a possible implementation, the articulated bracket includes two parallel rod groups, each of the rod groups includes a first support rod and a second support rod that are cross-hinged, one end of the first support rod is hinged to the rear support rod, and one end of the second support rod is hinged to the front support rod.

[0023] In the above technical solution, the cross-hinged design enables the first support rod and the second support rod to support each other when subjected to force, thereby enhancing the stability of the entire articulated bracket. In addition, one end of the first support rod is hinged to the rear support rod and one end of the second support rod is hinged to the front support rod, so that the articulated bracket can be linked with the front base frame and the rear base frame, that is, the articulated bracket produces synchronous changes when the front base frame and the rear base frame rotate, which can effectively improve the folding efficiency and linkage.

[0024] Optionally, in a possible implementation, a torsion spring is installed on the front base frame, one end of the torsion spring is fixed to the front base frame, and the other end is a free end. When the front base frame and the rear base frame are folded, the other end of the torsion spring is compressed and abuts against the rear base frame.

[0025] In the above technical solution, the function of the torsion spring is mainly to automatically unlock the frame after it is folded. When the front frame and the rear frame are in the folded state, the hook portion is buckled on the locking block, and the torsion spring is compressed. When it is necessary to unlock and unfold the frame, the grip portion is toggled or rotated to disengage the hook portion from the locking block. At this time, the torsion spring is reset and causes the front frame and the rear frame to bounce away from each other to achieve automatic unlocking.

[0026] Optionally, in a possible implementation, the seat is provided with a plurality of rotatable buckles.

[0027] In the above technical solution, the buckle can be used as a hook to hang items carried by the user. It can be locked in the seat when not in use and can be pulled out when needed, thereby improving the user experience and making it simple and convenient to use.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The front chassis, rear chassis, steering control assembly, linkage rod and hinged bracket of the utility model form a linkage effect. When the front chassis rotates relative to the rear chassis, the steering control assembly, linkage rod and hinged bracket are synchronously driven to fold. Therefore, the electric scooter can be stored by folding only once. The vehicle can be quickly folded into a compact state, which is convenient for carrying and storage. In addition, the locking assembly can quickly lock the folded or unfolded frame, which is simple and efficient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is one of the overall structural diagrams of an embodiment.

[0032] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0033] Figure 3 Schematic diagram of the structure of a locking assembly according to an embodiment.

[0034] Figure 4 This is the second schematic diagram of the overall structure of an embodiment.

[0035] Figure 5 This is a schematic diagram of the structure of an embodiment folded in half.

[0036] Figure 6 This is a schematic diagram of a fully folded structure of an embodiment.

[0037] Reference numerals: 1-front frame; 11-front chassis; 12-steering control assembly; 121-crossbeam; 122-front wheel assembly; 123-steering handle; 1231-telescopic rod; 1232-control panel; 1233-handle; 124-crank connecting rod assembly; 13-locking assembly; 131-grip portion; 132-hook portion; 133-notch; 2-rear frame; 21-rear chassis; 211-locking column; 212-torsion spring; 22 -articulated bracket; 221-first support rod; 222-second support rod; 23-seat; 231-buckle; 24-power assembly; 241-motor; 242-transmission box; 243-spindle; 244-rear wheel; 245-battery pack; 3-linkage rod; 31-locking block; 32-guide plate; 321-guide groove; 4-tension spring; 5-extension bracket; 51-guide wheel; 6-support plate; 61-castor; 62-connecting strip. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0040] Please refer to Figure 1-Figure 4 The present embodiment provides a folding electric vehicle that can automatically return to the correct direction, including a front frame 1, a rear frame 2 and a linkage rod 3, and the front frame and the rear frame can rotate relative to each other.

[0041] Specifically, the front frame 1 includes a front chassis 11, and a steering assembly 12 and a locking assembly 13 rotatably mounted on the front chassis 11. The locking assembly 13 has a grip portion 131 and a hook portion 132. The steering assembly 12 and the locking assembly 13 are respectively located at opposite ends of the front chassis 11. The steering assembly 12 serves as the front portion of the vehicle.

[0042] The rear frame 2 includes a rear chassis 21, an articulated bracket 22 rotatably mounted on the rear chassis 21, a seat 23 provided on the articulated bracket 22, and a power assembly 24 provided on the rear chassis 21; the front chassis 11 is hinged to the rear chassis 21, and the hinge point of the front chassis 11 and the rear chassis 21 is close to the locking assembly 13, the linkage rod 3 is rotatably mounted on the rear chassis 21 through the lock column 211, and one end of the linkage rod 3 is hinged to the direction operating assembly, and the other end is provided with a lock block 31, and there is a certain distance between the lock block 31 and the lock column 211. The distance is within the rotation range of the hook portion 132. One end of the articulated bracket 22 is hinged to the rear bottom frame 21, and the other end is hinged to the front bottom frame 11. When the front frame 1 and the rear frame 2 are unfolded, the hook portion 132 is engaged with the lock column 211. At this time, the hook portion 132 is fixed to the lock column 211 to play a positioning and locking role. When the front frame 1 and the rear frame 2 are folded, the hook portion 132 is engaged with the lock block 31. At this time, the hook portion 132 is fixed to the lock block 31 to play a positioning and locking role.

[0043] In this embodiment, since the front chassis 11 is hinged to the rear chassis 21, the direction control assembly 12 is rotatably connected to the front chassis 11, and the linkage rod 3 is hinged to the rear chassis 21 and the direction control assembly 12 at the same time, and the articulated bracket 22 is connected to the front chassis 11, relatively rotating components can be generated, that is, a linkage effect is formed between the front chassis 11, the rear chassis 21, the direction control assembly 12, the linkage rod 3 and the articulated bracket 22. When the front chassis 11 rotates relative to the rear chassis 21, the direction control assembly 12, the linkage rod 3 and the articulated bracket 22 are synchronously driven to fold synchronously. Therefore, only one folding is required to complete the storage of the electric scooter. The operation is simple and efficient. The vehicle can be quickly folded into a compact state, which is convenient for carrying and storage, and reduces space occupation.

[0044] Furthermore, the design of the locking assembly 13 ensures the stability of the front and rear frames 1 and 2 in either the unfolded or folded state. When the frames are unfolded, the hook portion 132 in the locking assembly 13 engages with the locking post 211, locking the relative position of the front and rear frames 1 and 2, thereby locking the entire linkage and ensuring stability after unfolding. Similarly, when the frames are folded, the hook portion 132 engages with the locking block 31, locking the entire linkage and ensuring stability after folding. This effectively prevents accidental folding or unfolding of the vehicle during use, improving safety.

[0045] Please refer to Figure 1 、 Figure 5 and Figure 6In this embodiment, the rear chassis 21 is used as a reference. When the rear chassis 21 is fixed, the gripping portion 131 is first moved to rotate the hook portion 132 and disengage the lock column 211. At this time, the front chassis 11 and the rear chassis 21 are unlocked. Then the front chassis 11 is rotated to rotate relative to the rear chassis 21. During the rotation of the front chassis 11, the direction control assembly 12 is synchronously driven to rotate relative to the front chassis 11 and the hinged bracket 22. The direction control assembly 12 is also synchronously driven to rotate the linkage rod 3 during its rotation until the hook portion 132 is buckled onto the lock block 31 on the linkage rod 3, thereby completing the folding of the electric vehicle.

[0046] Please refer to Figure 2 In this embodiment, a limiting boss is provided on the front frame 1. A tension spring 4 is connected between the limiting boss and the hook portion 132. The tension spring 4 is used to pull the hook portion 132 so that it abuts the limiting boss. The upper end of the hook portion 132 can abut the limiting boss. The lower end of the hook portion 132 is provided with a groove. The tension spring 4 pulls the hook portion 132 so that the upper end of the hook portion 132 always tends to press against the limiting boss. This ensures that the hook portion 132 is relatively stable relative to the front frame 11 while also allowing relative rotation, thereby achieving the automatic locking function.

[0047] The hook portion 132 is connected to the limiting boss by the tension spring 4, ensuring that the hook portion 132 is always subjected to a force acting in the direction of the limiting boss, effectively enhancing the connection stability between the hook portion 132 and the limiting boss and reducing the risk of the hook portion 132 being separated from the limiting boss due to bumps or vibrations. In addition, when the hook portion 132 is fastened to the lock post 211, the tension spring 4 will always tighten the hook portion 132 to prevent it from being separated from the lock post 211, thereby achieving the locking of the front base frame 11 and the rear base frame 21. It can also realize the automatic locking function. During the deployment process, when the hook portion 132 contacts the lock post 211, the lock post 211 will squeeze the hook portion 132 to the side until the hook portion 132 is fastened into the lock post 211, resulting in a fast and stable locking method.

[0048] Please refer to Figure 1 The steering control assembly 12 of this embodiment includes a crossbeam 121, two front wheel assemblies 122 rotatably mounted at both ends of the crossbeam 121, and a steering handle 123 provided on the crossbeam 121. The front chassis 11 and the linkage rod 3 are both hinged to the crossbeam 121 at different locations. The front wheel assemblies 122 include a supporting link and a front caster 61. The front caster 61 is rotatably mounted on the supporting link, which is also rotatably connected to the crossbeam 121.

[0049] Through the steering handle 123 on the crossbeam 121, the operator can easily control the steering of the front wheel group 122 to achieve flexible control. The crossbeam 121, as the core structure of the entire direction control assembly 12, not only carries the front wheel group 122 and the steering handle 123, but is also connected to the front frame 11 and the linkage rod 3 through a hinged manner, so that the steering handle 123 can be rotated and folded relative to the front frame 11, thereby facilitating storage and saving space.

[0050] Please refer to Figure 4 In this embodiment, two crank-connecting rod assemblies 124 are symmetrically mounted on the crossbeam 121, each connected to the two front wheel assemblies 122. One end of the crank-connecting rod assembly 124 is rotatably mounted on the crossbeam 121, while the other end is rotatably mounted to the supporting connecting rod. The symmetrical arrangement of the two crank-connecting rod assemblies 124 ensures that the front wheel assemblies 122 are evenly stressed during steering, significantly improving the stability of the mobility scooter during travel. The symmetrical structure also helps reduce vibration and wear caused by imbalance, further extending the vehicle's service life.

[0051] Please refer to Figure 1 and Figure 4 In this embodiment, an extension bracket 5 is provided on the crossbeam 121, and a guide wheel 51 is rotatably mounted on the extension bracket 5. A guide plate 32 is provided on the linkage rod 3, and a guide groove 321 is provided on the guide plate 32. The guide groove 321 is arranged opposite to the guide wheel 51. The guide groove 321 is a gradual structure with both ends gradually inclined toward the center, such as a "V"-shaped groove structure.

[0052] Specifically, the guide groove 321 can serve as a position limiter and direction corrector. When the vehicle turns or changes lanes, the crossbeam 121 needs to be rotated, and the guide wheel 51 will rotate synchronously with the crossbeam 121. When the guide wheel 51 abuts against the ends of the guide groove 321, it is restricted and cannot rotate further, thereby achieving the setting of the vehicle's steering range. When the vehicle frame needs to be folded, regardless of the angle of the crossbeam 121, since the crossbeam 121 needs to rotate relative to the front chassis 11 and the linkage rod 3 during folding, the guide wheel 51 will rotate synchronously with the guide plate 32. During the rotation process, it will be squeezed by the guide groove 321 and gradually return to the center of the guide groove 321, thereby achieving automatic direction correction when the vehicle is folded, eliminating the need for manual correction by the user, facilitating faster folding of the vehicle and improving the user experience.

[0053] Please refer to Figure 1 In this embodiment, the control handle 123 includes a telescopic rod 1231, a control panel 1232 and two handles 1233. One end of the telescopic rod 1231 is arranged on the beam 121, and the other end is connected to the control panel 1232. The two handles 1233 are respectively arranged on opposite sides of the control panel 1232.

[0054] The design of the telescopic rod 1231 in the control handle 123 allows the user to adjust the height of the handle 1233 according to his or her own height and needs, thereby ensuring that each operator can control the device in the most comfortable posture. This not only improves the operating comfort, but also helps to reduce fatigue caused by long-term operation. It can also further compress the folded structure when folded and stored, making the scooter more compact after folding.

[0055] Please refer to Figure 4 The power assembly 24 of this embodiment includes a motor 241, a transmission box 242 connected to the output shaft of the motor 241, a main shaft 243 connected to the transmission box 242, rear wheels 244 rotatably mounted on both ends of the main shaft 243, and a battery pack 245 for powering the motor 241.

[0056] The direct connection between motor 241 and transmission case 242 ensures efficient power transmission and reduces energy loss during the transfer process. The gears or drive belt design within transmission case 242 further adjusts and optimizes power output, ensuring stable and efficient rotation of rear wheel 244. The design of transmission case 242 allows for adjustment of the output gear ratio based on actual needs, thereby varying the speed and torque of rear wheel 244 to suit different usage scenarios.

[0057] In this embodiment, the front chassis 11 includes two parallel front support rods, and the rear chassis 21 includes two parallel rear support rods. The two front support rods are hinged to the two rear support rods respectively, and the linkage rod 3 and the hook portion 132 are two groups corresponding to the two front support rods and the rear support rods.

[0058] The front chassis 11 and rear chassis 21 are respectively composed of two parallel front and rear support rods. The two front and rear support rods are hinged to each other, allowing the entire chassis to be easily folded. This not only facilitates transportation and storage of the device, but also allows the device to be quickly deployed and put into use when needed. Furthermore, the design of the two sets of linkage rods 3 and the hook portion 132 makes the device even easier to operate. Users can fold, unfold, and adjust the chassis with simple operations, such as rotating or pulling certain components, such as the grip portion 131, without the need for complex tools or steps.

[0059] It should be noted that the guide plate 32 is arranged between the two linkage rods 3, the locking assembly 13 is arranged between the two front support rods, and the two hook portions 132 are respectively located at the two ends of the gripping portion 131. A notch 133 is provided in the middle position of the gripping portion 131, and the notch 133 matches the telescopic rod 1231. When the vehicle is folded, the telescopic rod 1231 can be placed in the notch 133.

[0060] In this embodiment, the articulated bracket 22 includes two parallel rod groups, each rod group includes a cross-hinged first support rod 221 and a second support rod 222, one end of the first support rod 221 is hinged to the rear support rod, and the other end is hinged to the seat 23, one end of the second support rod 222 is hinged to the front support rod, and the other end is hinged to the seat 23.

[0061] The cross-hinged design enables the first support rod 221 and the second support rod 222 to support each other when subjected to force, thereby enhancing the stability of the entire articulated bracket 22. In addition, one end of the first support rod 221 is hinged to the rear support rod and one end of the second support rod 222 is hinged to the front support rod, so that the articulated bracket 22 can be linked with the front base frame 11 and the rear base frame 21, that is, when the front base frame 11 and the rear base frame 21 rotate, the articulated bracket 22 produces synchronous changes, which can effectively improve the folding efficiency and linkage.

[0062] In addition, please refer to Figure 1 In this embodiment, a torsion spring 212 is installed on the front base frame 11. One end of the torsion spring 212 is fixed to the front base frame 11 and the other end is a free end. When the front base frame 11 and the rear base frame 21 are folded, the other end of the torsion spring 212 is compressed and abuts against the rear base frame 21.

[0063] Specifically, the torsion spring 212 is mainly used for automatic unlocking after the frame is folded. When the front frame 11 and the rear frame 21 are in the folded state, the hook portion 132 is buckled on the locking block 31, and the torsion spring 212 is compressed. When it is necessary to unlock and unfold the frame, the grip portion 131 is moved or rotated to disengage the hook portion 132 from the locking block 31. At this time, the torsion spring 212 is reset and causes the front frame 1 and the rear frame 2 to bounce apart from each other, thereby achieving automatic unlocking.

[0064] Please refer to Figure 4 In this embodiment, the seat 23 is provided with a plurality of rotatable buckles 231. The buckles 231 can be used as hooks for hanging items carried by the user. When not in use, the buckles can be locked in the seat 23 and can be pulled out when needed, thereby improving the user experience and making it simple and convenient to use.

[0065] In addition, a reflective strip is provided on the rear chassis 21 to provide a reflective warning at night.

[0066] Please refer to Figure 4In this embodiment, a support plate 6 is further provided on the rear chassis 21. The support plate 6 is mounted on the end of the rear chassis 21 away from the front chassis 11. Casters 61 are rotatably mounted on the support plate 6. The support plate 6 and casters 61 are arranged in two sets at intervals. When the vehicle is folded, the casters 61 can be used as support points to pull the vehicle. Furthermore, as another embodiment, the support plate 6 can be rotatably mounted on the rear chassis 21 and connected to the hinged bracket 22 via a connecting bar 62. The ends of the connecting bar 62 are respectively hinged to the support plate 6 and the hinged bracket 22. In this way, the casters 61 can be linked to the folding of the frame, so that the casters 61 extend synchronously when the frame is folded.

[0067] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0069] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foldable electric vehicle that can automatically return to its normal direction, characterized by: Including front frame, rear frame and linkage rod; The front frame includes a front chassis, and a direction control assembly and a locking assembly rotatably mounted on the front chassis, wherein the locking assembly has a gripping portion and a hook portion; The rear frame includes a rear base frame, an articulated bracket rotatably mounted on the rear base frame, a seat provided on the articulated bracket, and a power assembly provided on the rear base frame; The front chassis is hinged to the rear chassis, the linkage rod is rotatably mounted on the rear chassis via a lock column, one end of the linkage rod is hinged to the direction operating assembly, and the other end is provided with a lock block, one end of the articulated bracket is hinged to the rear chassis, and the other end is hinged to the front chassis; The steering control assembly includes a crossbeam, two front wheel groups rotatably mounted at both ends of the crossbeam, and a steering handle provided on the crossbeam. The front chassis and the linkage rod are respectively hinged to different parts of the crossbeam. An extension bracket is provided on the crossbeam, a guide wheel is rotatably mounted on the extension bracket, a guide plate is provided on the linkage rod, and a guide groove opposite to the guide wheel is provided on the guide plate.

2. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: The guide groove is a gradual structure with both ends gradually tilted toward the center.

3. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: The front frame is provided with a limiting boss, and a tension spring is connected between the limiting boss and the hook portion, and the tension spring is used to pull the hook portion so that the hook portion abuts against the limiting boss.

4. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: Two groups of crank-connecting rod assemblies are symmetrically arranged on the crossbeam, and the two groups of crank-connecting rod assemblies are respectively connected to the two front wheel groups.

5. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: The control handle comprises a telescopic rod, a control panel and two handles. One end of the telescopic rod is arranged on the crossbeam, and the other end is connected to the control panel. The two handles are respectively arranged on opposite sides of the control panel.

6. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: The power assembly includes a motor, a transmission box connected to the output shaft of the motor, a main shaft connected to the transmission box, rear wheels rotatably mounted on both ends of the main shaft, and a battery pack for powering the motor.

7. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: The front chassis includes two parallel front support rods, the rear chassis includes two parallel rear support rods, the two front support rods are hinged to the two rear support rods respectively, and the linkage rod and the hook portion are two groups corresponding to the two front support rods and the rear support rods.

8. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 7, characterized in that: The articulated bracket includes two parallel rod groups, each of which includes a first support rod and a second support rod that are cross-hinged, one end of the first support rod is hinged to the rear support rod, and one end of the second support rod is hinged to the front support rod.

9. The foldable electric vehicle capable of automatically returning to the normal direction according to claim 1, characterized in that: A torsion spring is installed on the front chassis, one end of the torsion spring is fixed to the front chassis, and the other end is a free end. When the front chassis and the rear chassis are folded, the other end of the torsion spring is compressed and abuts against the rear chassis.

10. The foldable electric vehicle capable of automatically returning to the correct direction according to any one of claims 1 to 9, characterized in that: The seat is provided with a plurality of rotatable buckles.

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