Electric tricycle

Abstract

The invention relates to the technical field of electric vehicles, in particular to an electric tricycle which comprises a rear tricycle frame, the rear tricycle frame is hinged to a front tricycle frame, the rear tricycle frame and the front tricycle frame can rotate up and down around a hinged part, a shock absorber is further installed between the rear tricycle frame and the front tricycle frame, and rear wheels driven by a driving motor are installed on the rear tricycle frame. A front wheel is installed on the front frame through a front fork arm, and a handlebar is fixedly installed on the front fork arm. The frame is divided into the front frame and the rear frame which are hinged, and the shock absorber is connected with the third hinge lug of the front frame, so that the front frame and the rear frame can relatively rotate around the hinge point in the vertical direction. When the wheel on one side jolts, vibration is absorbed by the shock absorbers and cannot be conducted to the whole vehicle body, overall shaking of the vehicle body is greatly reduced, and the driving experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to an electric tricycle. Background Art

[0002] Electric tricycles are three-wheeled vehicles used for transporting goods or people, powered by batteries and driven by electric motors. They are widely used due to their flexibility, ease of maintenance, and low price.

[0003] Existing electric tricycles use a one-piece frame with a steering wheel mounted at the front, a drive axle mounted at the rear, rear wheels mounted at both ends of the drive axle, and a bucket and driver's seat mounted on top of the frame. While this structure is simple and relatively strong, it lacks comfort. If one wheel bumps, the entire vehicle will shake, making it unfriendly to the driver. Summary of the Invention

[0004] In order to solve the defects in the prior art, the present invention provides an electric tricycle, which is specifically implemented through the following technical solutions: An electric tricycle includes a rear frame, which is hinged to a front frame. The rear frame and the front frame can rotate up and down around the hinge part. A shock absorber is also installed between the rear frame and the front frame. A rear wheel driven by a drive motor is installed on the rear frame, and a front wheel is installed on the front frame through a front fork arm. A steering handle is fixedly installed on the front fork arm.

[0005] The first end of the rear frame is provided with a first articulated ear and a second articulated ear, and there are two second articulated ears, and the two second articulated ears are located on the same horizontal line; the first articulated ear is located in a middle position above the two second articulated ears; the second end of the front frame is fixedly mounted with an articulated arm articulated to the corresponding second articulated ear; the second end of the front frame is further mounted with a third articulated ear matching the first articulated ear, and the two ends of the shock absorber are respectively articulated to the first articulated ear and the third articulated ear.

[0006] The second end of the front frame is also equipped with a seat via a first bracket.

[0007] A rear axle is mounted on the rear frame, a drive motor is mounted on the rear axle, and rear wheels are mounted on both ends of the rear axle.

[0008] A bucket is installed on the top of the rear frame, and the second end of the bottom of the bucket is hinged to the rear frame; the first end of the bottom of the bucket is clamped to a limiting piece installed on the rear frame.

[0009] A pedal is installed at one end of the limiting component.

[0010] An auxiliary component is also installed at the second end of the rear frame, and the auxiliary component can be supported on the ground.

[0011] The auxiliary component includes a connecting seat installed on the rear frame, a lifting rod is slidably installed in the connecting seat, a plurality of first limiting holes are opened on the lifting rod, and a second limiting hole matching the first limiting hole is opened on the connecting seat, and a first pin is inserted into the second limiting hole and the first limiting hole.

[0012] A connecting plate is detachably mounted on the connecting seat, and a trailer axle is detachably mounted on a side of the connecting plate away from the connecting seat.

[0013] The limiting member includes a plate body, a hook is fixedly installed on the first end of the top of the plate body, the middle part of the plate body is installed on the rear frame through a hinge shaft, a torsion spring is sleeved on the hinge shaft, one end of the torsion spring abuts against the rear frame, and the other end abuts against the plate body, a slot matching the hook is provided on the bucket, and the foot pedal is installed on the second end of the top of the plate body.

[0014] The technical solution of the present invention has the following advantages: The tricycle utilizes a split, articulated frame design, splitting the front and rear frames into a triangular arrangement of hinge lugs. The third hinge lug of the front frame is connected via a shock absorber, allowing the front and rear frames to rotate vertically relative to each other around the hinge point. When a single wheel bumps, the vibration is absorbed by the shock absorber and prevented from transmitting to the entire vehicle body, significantly reducing overall body sway and improving the driving experience. This fundamentally addresses the traditional tricycle issue of "whole-vehicle sway when a single wheel bumps," significantly improving comfort while maintaining frame strength.

[0015] The truck bed is tiltable. Simply stepping on a foot pedal releases the locking mechanism, allowing manual tipping of the bed for efficient and effortless unloading. A lifting bar at the end of the rear frame provides firm support to prevent tipping during unloading. A base at the bottom of the bar increases ground contact and enhances stability.

[0016] Equipped with a trailer axle, this design enables the vehicle to be quickly converted into a towing tool to adapt to various transportation scenarios.

[0017] The battery compartment is located on the rear axle side close to the front frame to balance the body weight. At the same time, it is separated from the drive control components of the front frame to simplify the wiring layout; the protective shell integrates protection lines and lights for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3 The structure of the present invention is schematically shown Figure 2 ; Figure 4 A side structural diagram of the present invention; Figure 5 Schematic diagram of the installation structure of the limiter; Figure 6 for Figure 5 Schematic diagram of the structure at point A in the middle.

[0020] In the figure, 1- lifting ring, 2- auxiliary component, 3- rear wheel, 4- rear frame, 5- battery compartment, 6- front frame, 7- first bracket, 8- front wheel, 9- front fork arm, 10- guard shell, 11- handlebar, 12- seat, 13- side plate, 14- rear axle, 15- drive motor, 16- handbrake, 17- brake pedal, 18- shock absorber, 19- first hinge ear, 20- second hinge ear, 21- second bracket, 22- seat cushion, 23- high and low speed shift cable, 24- foot pedal, 25- limiter, 26- base, 27- connecting seat, 28- connecting plate, 29- trailer axle, 30- first limit hole, 31- lifting rod, 32- hook, 33- plate body, 34- hinge seat, 35- articulated shaft, 36- torsion spring. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the modules or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] As attached Figure 1 To the attached Figure 4 As shown, the present invention provides an electric tricycle that adopts a split frame, that is, the entire frame is divided into a rear frame 4 and a front frame 6. The bucket is mounted on the rear frame 4, and the seat 12 is mounted on the front frame 6. The rear frame 4 and the front frame 6 are connected in an articulated manner. This structure can reduce the impact of uneven road conditions on the vehicle's driving stability.

[0026] A lifting ring 1 is installed on the truck bed, which makes it easy to flatten the entire truck bed.

[0027] As attached Figure 3 As shown, a first hinged lug 19 and a second hinged lug 20 are fixedly mounted on the first end of the rear frame 4, i.e., the end close to the front frame 6; there are two second hinged lugs 20, and the two second hinged lugs 20 are located on the same horizontal line; there is only one first hinged lug 19, and it is located in the middle position above the two second hinged lugs 20, that is, the first hinged lug 19 and the two second hinged lugs 20 are distributed in an isosceles triangle, with the first hinged lug 19 located at the top vertex of the isosceles triangle, and the two second hinged lugs 20 located at the bottom vertex of the isosceles triangle.

[0028] The second end of the front frame 6 , that is, the end close to the rear frame 4 , is fixedly mounted with two hinged arms and a third hinged lug; the two hinged arms correspond one to one with the two second hinged lugs 20 .

[0029] A first horizontal hinge hole is provided on the hinge arm, and a second hinge hole matching the first hinge hole is provided on the second hinge ear 20 ; the first horizontal axis passes through the first hinge hole and the second hinge hole to realize the hinge connection between the hinge arm and the second hinge ear 20 .

[0030] A third hinge lug is also fixedly mounted on the second end of the front frame 6. A shock absorber 18 is mounted between the third hinge lug and the first hinge lug 19. Specifically, the first end of the shock absorber 18 is hinged to the third hinge lug via a second horizontal axis, while the second end is hinged to the first hinge lug 19 via a third horizontal axis. Once installed, the shock absorber 18 can swing vertically about its corresponding hinge points at both ends. The height of the third hinge lug is less than that of the first hinge lug 19.

[0031] After the front frame 6 and the rear frame 4 are installed, they can rotate relative to each other in the vertical direction around the hinge portion.

[0032] The rear axle 14 and the battery compartment 5 are mounted on the rear frame 4 , wherein the battery compartment 5 is located on a side of the rear axle 14 close to the front frame 6 .

[0033] A driving motor 15 is mounted on the rear axle 14 , and rear wheels 3 are mounted on both ends of the rear axle 14 .

[0034] A first bracket 7 is also fixedly mounted on the second end of the front frame 6 , a seat 12 is fixedly mounted on the top of the first bracket 7 , and a cushion 22 is mounted on the seat 12 .

[0035] The handbrake 16 and the high-speed and low-speed shift cables 23 are mounted on the first bracket 7 , wherein the high-speed and low-speed shift cables 23 are used to switch the speed ratio of the reducer.

[0036] A front fork arm 9 is mounted on a first end of the front frame 6 , a front wheel 8 is mounted on the front fork arm 9 , and a handlebar 11 is fixedly mounted on the top of the front fork arm 9 .

[0037] A protective shell 10 is also installed at the first end of the front frame 6. The protective shell 10 is used to protect the circuits and install the lights.

[0038] A brake pedal 17 is also installed on the front frame 6.

[0039] A bucket is installed on the top of the rear frame 4. Specifically, the bucket includes a second bracket 21 and a side plate 13 hinged to the upper part of the second bracket 21. The second end of the bottom of the second bracket 21 is hinged to the rear frame 4; the first end of the bottom of the second bracket 21 is clamped with a limit piece 25 installed on the rear frame 4.

[0040] One end of the limiting member 25 is provided with a pedal 24. When the pedal 24 is stepped on, the limiting member 25 is disengaged from the second bracket 21, and the bucket is manually pulled up to achieve unloading.

[0041] An auxiliary assembly 2 is also mounted on the second end of the rear frame 4 , and the auxiliary assembly 2 can be supported on the ground during unloading; the auxiliary assembly 2 can also be used to mount a trailer.

[0042] The structure of the auxiliary component 2 is shown in the attached Figure 4 As shown, it includes a connecting seat 27 welded on the rear frame 4, and a lifting rod 31 is slidably installed in the connecting seat 27. The lifting rod 31 is vertically arranged. Of course, the connecting seat 27 can also be detachably mounted on the rear frame 4, for example, by bolts.

[0043] The lifting rod 31 is provided with a plurality of first limiting holes 30, which are arranged along the vertical direction of the lifting rod 31. The connecting seat 27 is provided with a second limiting hole matching the first limiting hole 30, and the second limiting hole and the first limiting hole 30 are plugged with the first pin.

[0044] The bottom of the lifting rod 31 is welded with a base 26. Of course, the base 26 can also be installed in the bottom of the lifting rod 31 in a detachable manner, or be hinged to the bottom of the lifting rod 31.

[0045] A connecting plate 28 is detachably mounted on the connecting seat 27. The cross section of the connecting plate 28 is U-shaped and is buckled onto the connecting seat 27. The connecting seat 27 and the connecting plate 28 are fixed by at least two latches.

[0046] The trailer axle 29 can be detachably installed on the side of the connecting plate 28 away from the connecting seat 27. Specifically, two horizontal limit plates are fixedly installed on the side of the connecting plate 28 away from the connecting seat 27, and the two limit plates are arranged in sequence from top to bottom; the trailer axle 29 passes through the two limit plates in sequence from top to bottom, and the nuts are installed to complete the installation of the trailer axle 29.

[0047] The trailer axle 29 is also provided with an anti-dropout pin, which is located below the nut.

[0048] The installation structure of the aforementioned limiter 25 is shown in the attached Figure 5 and attached Figure 6 As shown, the limiting member 25 includes a plate body 33, a hook 32 is fixedly mounted on the first end of the top of the plate body 33, and the pedal 24 is mounted on the second end; the middle part of the plate body 33 is hinged to the hinge seat 34 through a hinge shaft 35, and the hinge seat 34 is fixedly mounted on the rear frame 4, and a torsion spring 36 is sleeved on the hinge shaft 35, one end of the torsion spring 36 abuts against the rear frame 4, and the other end abuts against the plate body 33.

[0049] The second bracket 21 is provided with a slot matching the hook 32 . Under the torsion force of the torsion spring 36 , the hook 32 is firmly engaged in the slot to keep the bucket stable.

[0050] When unloading, the user steps on the pedal 24 to release the hook 32 from the slot; and then turns the bucket over forcefully.

[0051] All electrical components in this embodiment are electrically connected to the batteries in the battery compartment 5 and are controlled by the controller.

[0052] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An electric tricycle, characterized by: The invention comprises a rear frame (4), wherein the rear frame (4) is hinged to the front frame (6), and the rear frame (4) and the front frame (6) can rotate up and down around the hinge portion, and a shock absorber (18) is installed between the rear frame (4) and the front frame (6), and a rear wheel (3) driven by a drive motor (15) is installed on the rear frame (4), and a front wheel (8) is installed on the front frame (6) through a front fork arm (9), and a steering handle (11) is fixedly installed on the front fork arm (9).

2. The electric tricycle according to claim 1, characterized in that: The first end of the rear frame (4) is provided with a first hinged ear (19) and a second hinged ear (20), there are two second hinged ears (20), and the two second hinged ears (20) are located on the same horizontal line; the first hinged ear (19) is located in the middle position above the two second hinged ears (20); the second end of the front frame (6) is fixedly installed with an hinged arm hinged to the corresponding second hinged ear (20); the second end of the front frame (6) is also installed with a third hinged ear matching the first hinged ear (19), and the two ends of the shock absorber (18) are hinged to the first hinged ear (19) and the third hinged ear respectively.

3. The electric tricycle according to claim 1, characterized in that: The second end of the front frame (6) is also equipped with a seat (12) via a first bracket (7).

4. The electric tricycle according to claim 1, characterized in that: A rear axle (14) is mounted on the rear frame (4), a drive motor (15) is mounted on the rear axle (14), and rear wheels (3) are mounted on both ends of the rear axle (14).

5. The electric tricycle according to claim 1, characterized in that: A bucket is mounted on the top of the rear frame (4); a second end of the bottom of the bucket is hinged to the rear frame (4); and a first end of the bottom of the bucket is engaged with a limiting member (25) mounted on the rear frame (4).

6. The electric tricycle according to claim 5, characterized in that: A foot pedal (24) is mounted on one end of the limiting member (25).

7. The electric tricycle according to claim 5, characterized in that: The second end of the rear frame (4) is also equipped with an auxiliary component (2), and the auxiliary component (2) can be supported on the ground.

8. The electric tricycle according to claim 7, characterized in that: The auxiliary component (2) includes a connecting seat (27) mounted on the rear frame (4), a lifting rod (31) is slidably mounted in the connecting seat (27), a plurality of first limiting holes (30) are provided on the lifting rod (31), a second limiting hole matching the first limiting hole (30) is provided on the connecting seat (27), and a first pin is inserted into the second limiting hole and the first limiting hole (30).

9. The electric tricycle according to claim 8, characterized in that: A connecting plate (28) is detachably mounted on the connecting seat (27), and a trailer axle (29) is detachably mounted on a side of the connecting plate (28) away from the connecting seat (27).

10. The electric tricycle according to claim 6, characterized in that: The limiting member (25) includes a plate body (33), a hook (32) is fixedly mounted on the first end of the top of the plate body (33), the middle portion of the plate body (33) is mounted on the rear frame (4) via a hinge shaft (35), a torsion spring (36) is sleeved on the hinge shaft (35), one end of the torsion spring (36) abuts against the rear frame (4), and the other end abuts against the plate body (33), a slot matching the hook (32) is provided on the bucket, and the footrest (24) is mounted on the second end of the top of the plate body (33).

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