An electric tricycle with automatic gear shifting gear transmission structure

Abstract

The application relates to the technical field of electric tricycles, in particular to an electric tricycle with an automatic gear shifting gear transmission structure, which comprises a supporting component, a supporting frame, a motor arranged on the supporting frame, a torsion suspension beam arranged on the supporting frame, two rear wheels arranged on the torsion suspension beam, a transmission shaft arranged between the supporting frame and the torsion suspension beam, a rotating shaft arranged on the motor, a universal joint arranged between the rotating shaft and the transmission shaft and between the torsion suspension beam and the transmission shaft; a fixing component comprises a butt joint assembly arranged on the rotating shaft, a clamping assembly arranged on the butt joint assembly, an elastic assembly arranged on the clamping assembly, and a pulling assembly arranged on the elastic assembly; the device can conveniently disassemble the output shaft of the motor and the shaft body of the automatic gear shifting gear transmission structure, and facilitates the maintenance of the motor.

Description

Technical Field

[0001] This invention relates to the field of electric tricycle technology, and in particular to an electric tricycle with an automatic gear transmission structure. Background Technology

[0002] Currently, most electric tricycles on the market with two gears rely on manual shifting by the driver, which requires stopping the vehicle before manually switching gears. This places higher demands on the driver's skills in driving a manual two-gear tricycle, reducing vehicle efficiency and driving experience, and posing uncontrollable safety hazards due to the driver's actions of shifting gears while stopped. To address these issues, automatic gear transmission structures (similar to gearboxes, which change gear ratios to achieve gear shifting) have begun to be applied to electric tricycles, making them safer to use.

[0003] In use, when the existing motor output shaft is connected to the automatic shift gear transmission structure, the shaft of the motor output shaft and the shaft of the automatic shift gear transmission structure are generally fixed by welding or interference fit. Although the two methods have a good fixing effect, it is difficult to disassemble the two shafts during disassembly and maintenance, making it inconvenient to disassemble and maintain the motor. Summary of the Invention

[0004] In view of the fact that in the prior art, the shaft of the motor output shaft and the shaft of the automatic shift gear transmission structure are generally fixed by welding or interference fit, making it difficult to disassemble the two shafts during disassembly and maintenance, thus making it inconvenient to disassemble and maintain the motor, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an electric tricycle with an automatic gear transmission structure.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A supporting component includes a support frame, a motor mounted on the support frame, a torsion beam mounted on the support frame, two rear wheels mounted on the torsion beam, a drive shaft disposed between the support frame and the torsion beam, a rotating shaft mounted on the motor, and a universal joint disposed between the rotating shaft and the drive shaft, and between the torsion beam and the drive shaft; a fixing component includes a docking assembly mounted on the rotating shaft, a locking assembly mounted on the docking assembly, an elastic assembly mounted on the locking assembly, and a pulling assembly mounted on the elastic assembly; an anti-loosening component includes a lifting assembly mounted on the docking assembly, a mating assembly mounted on the lifting assembly, a rotating assembly disposed within the docking assembly, a sliding assembly mounted on the rotating assembly, and a moving assembly mounted on the docking assembly.

[0007] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the docking assembly includes a first plug fixedly connected to the motor output shaft, a second plug fixedly connected to the rotating shaft, both the first plug and the second plug having a receiving groove, and both the first plug and the second plug having an extension block fixedly connected to them.

[0008] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the engaging assembly includes a semi-circular groove disposed on the extension block, the semi-circular grooves on the two extension blocks are combined to form a circular groove, the extension block, the first insert block and the second insert block are provided with mounting cavities, the semi-circular groove is provided with an arc-shaped opening, the semi-circular groove is provided with a semi-cylinder, a first rotating block is fixedly connected to the semi-cylinder, the side walls of the first insert block and the second insert block are provided with through openings, and a second rotating block extending to the outside of the through opening is fixedly connected to the first rotating block.

[0009] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the elastic component includes a support shaft rotatably connected to the inner wall of the mounting cavity, a cylinder with an open lower end fixedly connected to the support shaft, a slider slidably connected inside the cylinder, and the slider being elastically connected to the inner wall of the cylinder by a first spring.

[0010] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the pulling component includes an L-shaped rod fixedly connected to the slider, and the first rotating block is provided with a socket that cooperates with the L-shaped rod.

[0011] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the lifting assembly includes two L-shaped strips fixedly connected to a first insert block and a second insert block. An L-shaped movable plate is slidably connected to the L-shaped strips. The first insert block and the second insert block are provided with mounting openings that cooperate with the movable plate. The movable plate is provided with a strip-shaped opening. A lifting plate is slidably connected inside the strip-shaped opening. A cover plate is fixedly connected to the lifting plate. The cover plate is elastically connected to the movable plate through a second spring.

[0012] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, wherein: the interlocking assembly includes an arc-shaped groove provided on the through opening, the arc-shaped groove is provided with a horizontal groove, a guide rod is slidably connected in the arc-shaped groove, the guide rod is fixedly connected to the lifting plate, an L-shaped locking block is fixedly connected to the second rotating block, the locking block is provided with a horizontal opening, and a stop block that cooperates with the locking block is fixedly connected to the lifting plate, both the stop block and the locking block are provided with a bevel.

[0013] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the rotating component includes a fixed column fixedly connected to the inner wall of the mounting cavity, a pull rope fixedly connected to the fixed column, and a counterweight ball fixedly connected to the pull rope.

[0014] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the sliding component includes an arc-shaped box fixedly connected to the inner wall of the mounting cavity, an arc-shaped plate slidably connected inside the arc-shaped box, anti-detachment blocks fixedly connected to both the arc-shaped plate and the inner wall of the arc-shaped box, and a fan-shaped plate that cooperates with the counterweight ball fixedly connected to the arc-shaped plate.

[0015] As a preferred embodiment of the electric tricycle with an automatic gear transmission structure of the present invention, the moving component includes vertical openings respectively disposed on the first insert block and the second insert block and both cooperating with the moving plate. The moving plate is elastically connected to the inner wall of the mounting cavity through a third spring. The arc-shaped box is provided with a guide opening, and the guide opening is provided with an arc-shaped rod that cooperates with the moving plate.

[0016] The present invention provides an electric tricycle with an automatic gear transmission structure, which offers the following advantages: By setting a fixing component, when connecting the motor output shaft to the shaft of the automatic gear transmission structure, it is only necessary to insert the first and second insert blocks together to achieve fixation, making it convenient to use. Furthermore, during disassembly, only the two second rotating blocks need to be moved, and the motor needs to be pulled, facilitating motor disassembly and maintenance. Simultaneously, the anti-loosening component automatically prevents the second rotating blocks from automatically moving when the motor output shaft rotates, ensuring the stability of the connection between the motor output shaft and the shaft of the automatic gear transmission structure. This solves the problem that the motor output shaft and the shaft of the automatic gear transmission structure are generally fixed by welding or interference fit, making it difficult to disassemble the two shafts during disassembly and maintenance, thus hindering motor disassembly and maintenance. The invention achieves the effect of facilitating motor disassembly and maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an electric tricycle with an automatic gear transmission structure.

[0019] Figure 2 This is a schematic diagram of the external structure of the first insert of an electric tricycle with an automatic gear transmission structure.

[0020] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at point A.

[0021] Figure 4 This is a cross-sectional view of a fixed component of an electric tricycle with an automatic gear transmission structure.

[0022] Figure 5 This is an exploded view of the elastic components of an electric tricycle with an automatic gear transmission structure.

[0023] Figure 6 This is a cross-sectional view of the anti-loosening component of an electric tricycle with an automatic gear transmission structure.

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B.

[0025] Figure 8 This is an exploded view of the interlocking assembly of an electric tricycle with an automatic gear transmission structure.

[0026] In the diagram: 100, Support component; 101, Support frame; 102, Motor; 103, Torsion beam; 104, Rear wheel; 105, Drive shaft; 106, Rotating shaft; 107, Universal joint; 108, Gearbox; 200, Fixing component; 201, Connecting assembly; 201a, First insert block; 201b, Second insert block; 201c, Receiving groove; 201d, Extension block; 202, Engaging assembly; 202a, Semi-circular groove; 202b, Mounting cavity; 202c, Arc-shaped opening; 202d, Semi-cylinder; 202e, First rotating block; 202f, Through opening; 202g, Second rotating block; 203, Elastic assembly; 203a, Support shaft; 203b, Cylinder; 203c, Slider; 203d, First spring; 204, Pulling assembly; 204a, L-shaped rod; 2 04b, Insertion port; 300, Anti-loosening component; 301, Lifting assembly; 301a, L-shaped strip; 301b, Moving plate; 301c, Strip-shaped opening; 301d, Lifting plate; 301e, Cover plate; 301f, Second spring; 302, Interlocking assembly; 302a, Arc-shaped groove; 302b, Horizontal groove; 302c, Guide rod; 302d, Locking block; 302e, Horizontal opening; 302f, 302g, Hypotenuse; 303, Rotating component; 303a, Fixed column; 303b, Pull rope; 303c, Counterweight ball; 304, Sliding component; 304a, Arc-shaped box; 304b, Arc-shaped plate; 304c, Anti-detachment block; 304d, Fan-shaped plate; 305, Moving component; 305a, Vertical opening; 305b, Third spring; 305c, Guide opening; 305d, Arc-shaped rod. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments. Example

[0030] Reference Figures 4-6 This is the first embodiment of the present invention. This embodiment provides an electric tricycle with an automatic shift gear transmission structure, which can quickly achieve the effect of fixing the rotating shaft 106 on the motor 102 and the transmission shaft 105. It includes a support component 100, including a support frame 101, a motor 102 mounted on the support frame 101, a torsion beam 103 mounted on the support frame 101, two rear wheels 104 mounted on the torsion beam 103, a transmission shaft 105 disposed between the support frame 101 and the torsion beam 103, a rotating shaft 106 mounted on the motor 102, and a universal joint disposed between the rotating shaft 106 and the transmission shaft 105, and between the torsion beam 103 and the transmission shaft 105. The universal joint 107 is rotatably connected to a shift gearbox 108 at its rear end; the fixed component 200 includes a docking assembly 201 disposed on the rotating shaft 106, a locking assembly 202 disposed on the docking assembly 201, an elastic assembly 203 disposed on the locking assembly 202, and a pulling assembly 204 disposed on the elastic assembly 203; the anti-loosening component 300 includes a lifting assembly 301 disposed on the docking assembly 201, a mating assembly 302 disposed on the lifting assembly 301, a rotating assembly 303 disposed within the docking assembly 201, a sliding assembly 304 disposed on the rotating assembly 303, and a moving assembly 305 disposed on the docking assembly 201.

[0031] Specifically, the support frame 101 is L-shaped, and the motor 102 is fixedly connected to the vertical side of the support frame 101. The support frame 101 is fixedly connected to the bottom of the vehicle body. A driven wheel is also provided on the front side of the support frame 101, which is mainly used for steering. Here, the two rear wheels 104 are driving wheels, and the two driven wheels cooperate with the driving wheels to form a three-wheel drive structure. The gearbox 108 is fixedly connected to the vehicle body. The universal joint 107 facilitates steering. The steering of this electric tricycle is existing technology and will not be described in detail here.

[0032] Furthermore, the docking assembly 201 includes a first insert 201a fixedly connected to the output shaft of the motor 102, and a second insert 201b fixedly connected to the rotating shaft 106. Both the first insert 201a and the second insert 201b are provided with receiving grooves 201c, and extension blocks 201d are fixedly connected to both the first insert 201a and the second insert 201b. The engaging assembly 202 includes a semi-circular groove 202a disposed on the extension block 201d, and semi-circular grooves 202a on both extension blocks 201d. The components are assembled into a circular groove. An installation cavity 202b is provided inside the extension block 201d, the first insertion block 201a, and the second insertion block 201b. An arc-shaped opening 202c is provided on the semi-circular groove 202a. A semi-cylinder 202d is provided inside the semi-circular groove 202a. A first rotating block 202e is fixedly connected to the semi-cylinder 202d. Through openings 202f are provided on the side walls of the first insertion block 201a and the second insertion block 201b. A second rotating block 202g extending to the outside of the through opening 202f is fixedly connected to the first rotating block 202e.

[0033] The first insert 201a and the second insert 201b have the same length, width and thickness. The extension block 201d extends into the receiving groove 201c. The semi-circular groove 202a cooperates with the semi-cylinder 202d to fix the first insert 201a and the second insert 201b. The second rotating block 202g extends to the outside of the through opening 202f, which facilitates the movement of the second rotating block 202g.

[0034] Preferably, the elastic component 203 includes a support shaft 203a rotatably connected to the inner wall of the mounting cavity 202b, a cylinder 203b with an open lower end fixedly connected to the support shaft 203a, a slider 203c slidably connected inside the cylinder 203b, and the slider 203c elastically connected to the inner wall of the cylinder 203b via a first spring 203d; the pulling component 204 includes an L-shaped rod 204a fixedly connected to the slider 203c, and a socket 204b on the first rotating block 202e that mates with the L-shaped rod 204a. The support shaft 203a is rotatably connected to the inner wall of the mounting cavity 202b, which can prevent the cylinder 203b from getting stuck. The arrangement of the L-shaped rod 204a and the socket 204b allows relative sliding between the first rotating block 202e and the L-shaped rod 204a.

[0035] In use, the first insert 201a and the second insert 201b are first separated, and the output shaft of the motor 102 is not fixed to the rotating shaft 106. At this time, the motor 102 can be disassembled for maintenance or repair. When it is necessary to fix the output shaft of the motor 102 to the rotating shaft 106 to provide power for the movement of the electric tricycle, the extension block 201d on the first insert 201a is inserted into the receiving groove 201c on the second insert 201b. At this time, the semi-cylinder 202d moves to the lower side of the semi-circular groove 202a. When the extension block 201d on the first insert 201a is inserted and fits against the edge of the semi-circular groove 202a, it can push the semi-cylinder 202d to rotate. At this time, the first rotating block 202e deflects, and the second rotating block 202g also deflects. When the first rotating block 202e deflects, it can drive the L-shaped rod 204a towards the circle. The cylinder 203b moves in the direction of the slider 203c, which moves towards the upper end of the cylinder 203b. The first spring 203d is compressed. When the extension blocks 201d on the first insert block 201a and the second insert block 201b are both inserted into the receiving groove 201c, the two semi-cylinders 202d combine to form a large cylinder that fits into the circular groove. At this time, under the action of the first spring 203d, the two semi-cylinders 202d deflect simultaneously, causing the large cylinder to be misaligned with the opening of the circular groove. Thus, the two extension blocks 201d cannot be separated, and the first insert block 201a and the second insert block 201b cannot be separated, thereby fixing the output shaft of the motor 102 to the rotating shaft 106. When disassembly is required, simply move the two second rotating blocks 202g and then pull the motor 102 to disassemble the output shaft of the motor 102 to the rotating shaft 106.

[0036] In summary, when it is necessary to connect the output shaft of motor 102 to the rotating shaft 106, simply insert the first plug 201a and the second plug 201b on the output shaft of motor 102 to make the semi-cylinder 202d misaligned with the opening on the semi-circular groove, so that the extension block 201d cannot be disengaged from the receiving groove 201c, thereby fixing the motor 102 and the rotating shaft 106, which is convenient to use. Example

[0037] Reference Figures 2-3This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an anti-loosening component 300 for an electric tricycle with an automatic gear transmission structure. It solves the problem of preventing the second rotating block 202g from rotating on its own, which could cause loosening between the output shaft of the motor 102 and the rotating shaft 106. Its lifting assembly 301 includes two L-shaped strips 301a fixedly connected to the first insert 201a and the second insert 201b. An L-shaped movable plate 301b is slidably connected to the L-shaped strips 301a. The first insert 201a and the second insert 201b are provided with mounting openings that cooperate with the movable plate 301b. The movable plate 301b is provided with a strip-shaped opening 301c, within which a lifting mechanism is slidably connected. A cover plate 301e is fixedly connected to a lifting plate 301d, and the cover plate 301e is elastically connected to a moving plate 301b via a second spring 301f. The insertion assembly 302 includes an arc-shaped groove 302a provided on the through opening 202f, a horizontal groove 302b provided on the arc-shaped groove 302a, a guide rod 302c slidably connected in the arc-shaped groove 302a, and the guide rod 302c is fixedly connected to the lifting plate 301d. An L-shaped locking block 302d is fixedly connected to the second rotating block 202g, and a horizontal opening 302e is provided on the locking block 302d. A stop block 302f that cooperates with the locking block 302d is fixedly connected to the lifting plate 301d, and both the stop block 302f and the locking block 302d are provided with a bevel 302g.

[0038] Specifically, the L-shaped bar 301a can support and guide the moving plate 301b. The distance between the arc-shaped groove 302a and the extension block 201d increases from top to bottom. Thus, when the lifting plate 301d moves downward, it is parallel to the extension block 201d. The outer end of the horizontal groove 302b passes through the through-hole 202f, so that the lifting plate 301d will not be blocked when it moves outward.

[0039] In use, when the output shaft of motor 102 is fixed to the rotating shaft 106, it can also push the lifting plate 301d to move outward. At this time, the guide rod 302c slides in the arc-shaped groove 302a. Since the distance between the arc-shaped groove 302a and the extension block 201d increases from top to bottom, when the guide rod 302c moves downward, it can also move away from the extension block 201d. Therefore, when the lifting plate 301d moves downward, it can also drive the lifting plate 301d to move to the left, so that the abutment block 302f moves to the left while moving downward. The upper surface of the abutment block 302f is flush with the inner wall of the locking block 302d. The second rotating block 202g is placed and moved. At this time, the guide rod 302c moves to the connection between the transverse groove 302b and the arc groove 302a. Then the moving block is moved so that the lifting plate 301d moves toward the locking block 302d, so that the locking block 302d and the abutment block 302f cooperate to limit the locking block 302d, prevent the locking block 302d from moving, and avoid the second rotating block 202g from moving, thereby ensuring the stability of the fixed connection between the output shaft of the motor 102 and the rotating shaft 106.

[0040] In summary, by setting the anti-loosening component 300, the lifting plate 301d can be moved so that the stop block 302f moves into the locking block 302d, thereby limiting the locking block 302d, preventing the second rotating block 202g from becoming loose, ensuring the stability of the fixed connection between the output shaft of the motor 102 and the rotating shaft 106, and ensuring the stability of the transmission. Example

[0041] Reference Figures 4-6 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a rotating component 303 for an electric tricycle with an automatic gear transmission structure, which solves the problem of how to automatically move the lifting plate 301d. The rotating component 303 includes a fixed column 303a fixedly connected to the inner wall of the mounting cavity 202b, a pull rope 303b fixedly connected to the fixed column 303a, and a counterweight ball 303c fixedly connected to the pull rope 303b; the sliding component 304 includes an arc-shaped box 304a fixedly connected to the inner wall of the mounting cavity 202b, an arc-shaped plate 304b slidably connected inside the arc-shaped box 304a, anti-detachment blocks 304c fixedly connected to both the arc-shaped plate 304b and the inner wall of the arc-shaped box 304a, and a fan-shaped plate 304d that cooperates with the counterweight ball 303c fixedly connected to the arc-shaped plate 304b.

[0042] Specifically, the counterweight ball 303c abuts against the inner wall of the sector plate 304d, and the height of the middle of the sector plate 304d is lower than the height of the two ends, thereby preventing the counterweight ball 303c from detaching from the sector plate 304d. The anti-detachment block 304c can guide the arc plate 304b on the one hand, and prevent the arc plate 304b from detaching from the arc box 304a on the other hand.

[0043] Furthermore, the movable component 305 includes vertical openings 305a respectively disposed on the first insert 201a and the second insert 201b and both cooperating with the movable plate 301b. The movable plate 301b is elastically connected to the inner wall of the mounting cavity 202b through a third spring 305b. The arc-shaped box 304a is provided with a guide opening 305c. The guide opening 305c is provided with an arc-shaped rod 305d that cooperates with the movable plate 301b. The third spring 305b enables the movable block to automatically reset. The guide opening 305c is also arc-shaped, and when the arc-shaped rod 305d moves, it can slide along the inner wall of the guide opening 305c.

[0044] When in use, the output shaft of motor 102 rotates to provide power for the movement of the electric tricycle, which drives the first insert block 201a to rotate, causing the second insert block 201b to rotate. When the first insert block 201a rotates, it drives the counterweight ball 303c to rotate around the fixed column 303a. When the counterweight ball 303c rotates around the fixed column 303a, under the action of centrifugal force, the counterweight ball 303c will have an outward force, causing the sector plate 304d to move outward. When the arc plate 304b moves outward, it can cause the arc rod 305d to move outward, thereby pushing the moving block to move and providing power for the limit of the second rotating block 202g.

[0045] In summary, when the output shaft of motor 102 rotates to provide power for the movement of the electric tricycle, it can also drive the counterweight ball 303c to rotate around the fixed column 303a. Under the action of centrifugal force, the counterweight ball 303c will have an outward force, which will provide power for the moving block through transmission, so that the lifting plate 301d can move. There is no need to manually move the lifting plate 301d, making it more convenient to use.

[0046] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0047] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electric tricycle with an automatic gear transmission structure, characterized in that: include, The support component (100) includes a support frame (101), a motor (102) mounted on the support frame (101), a torsion beam (103) mounted on the support frame (101), two rear wheels (104) mounted on the torsion beam (103), a drive shaft (105) mounted between the support frame (101) and the torsion beam (103), a rotating shaft (106) mounted on the motor (102), and a universal joint (107) mounted between the rotating shaft (106) and the drive shaft (105) and between the torsion beam (103) and the drive shaft (105). The fixing component (200) includes a docking assembly (201) disposed on the rotating shaft (106), a locking assembly (202) disposed on the docking assembly (201), an elastic assembly (203) disposed on the locking assembly (202), and a pulling assembly (204) disposed on the elastic assembly (203). The anti-loosening component (300) includes a lifting component (301) disposed on the docking assembly (201), an insertion component (302) disposed on the lifting component (301), a rotating component (303) disposed within the docking assembly (201), a sliding component (304) disposed on the rotating component (303), and a moving component (305) disposed on the docking assembly (201). The docking assembly (201) includes a first insert (201a) fixedly connected to the output shaft of the motor (102), a second insert (201b) fixedly connected to the rotating shaft (106), both the first insert (201a) and the second insert (201b) being provided with receiving grooves (201c), and both the first insert (201a) and the second insert (201b) being fixedly connected with extension blocks (201d). The engaging assembly (202) includes a semi-circular groove (202a) disposed on an extension block (201d), and the semi-circular grooves (202a) on the two extension blocks (201d) are combined to form a circular groove. The extension block (201d), the first insert block (201a), and the second insert block (201b) are provided with mounting cavities (202b). The semi-circular groove (202a) is provided with an arc-shaped opening (202c). The semi-circular groove (202a) is provided with a semi-cylinder (202d). A first rotating block (202e) is fixedly connected to the semi-cylinder (202d). The side walls of the first insert block (201a) and the second insert block (201b) are provided with through openings (202f). A second rotating block (202g) extending to the outside of the through opening (202f) is fixedly connected to the first rotating block (202e). The elastic component (203) includes a support shaft (203a) rotatably connected to the inner wall of the mounting cavity (202b), a cylinder (203b) with an open lower end fixedly connected to the support shaft (203a), a slider (203c) slidably connected inside the cylinder (203b), and the slider (203c) elastically connected to the inner wall of the cylinder (203b) through a first spring (203d); The pulling assembly (204) includes an L-shaped rod (204a) fixedly connected to the slider (203c), and the first rotating block (202e) is provided with a socket (204b) that mates with the L-shaped rod (204a).

2. An electric tricycle with an automatic gear transmission structure as described in claim 1, characterized in that: The lifting assembly (301) includes two L-shaped strips (301a) fixedly connected to a first insert (201a) and a second insert (201b). An L-shaped movable plate (301b) is slidably connected to the L-shaped strips (301a). The first insert (201a) and the second insert (201b) are provided with mounting openings that cooperate with the movable plate (301b). The movable plate (301b) is provided with a strip-shaped opening (301c). A lifting plate (301d) is slidably connected inside the strip-shaped opening (301c). A cover plate (301e) is fixedly connected to the lifting plate (301d). The cover plate (301e) is elastically connected to the movable plate (301b) through a second spring (301f).

3. An electric tricycle with an automatic gear transmission structure as described in claim 2, characterized in that: The interlocking assembly (302) includes an arc-shaped groove (302a) disposed on the through opening (202f), a horizontal groove (302b) provided on the arc-shaped groove (302a), a guide rod (302c) slidably connected in the arc-shaped groove (302a), the guide rod (302c) being fixedly connected to the lifting plate (301d), an L-shaped locking block (302d) being fixedly connected on the second rotating block (202g), the locking block (302d) being provided with a horizontal opening (302e), and a stop block (302f) cooperating with the locking block (302d) being fixedly connected on the lifting plate (301d), both the stop block (302f) and the locking block (302d) being provided with a bevel (302g).

4. An electric tricycle with an automatic gear transmission structure as described in claim 3, characterized in that: The rotating assembly (303) includes a fixed column (303a) fixedly connected to the inner wall of the mounting cavity (202b), a pull rope (303b) fixedly connected to the fixed column (303a), and a counterweight ball (303c) fixedly connected to the pull rope (303b).

5. An electric tricycle with an automatic gear transmission structure as described in claim 4, characterized in that: The sliding assembly (304) includes an arc-shaped box (304a) fixedly connected to the inner wall of the mounting cavity (202b). An arc-shaped plate (304b) is slidably connected inside the arc-shaped box (304a). Anti-detachment blocks (304c) are fixedly connected to both the inner wall of the arc-shaped plate (304b) and the inner wall of the arc-shaped box (304a). A fan-shaped plate (304d) that cooperates with the counterweight ball (303c) is fixedly connected to the arc-shaped plate (304b).

6. An electric tricycle with an automatic gear transmission structure as described in claim 5, characterized in that: The movable component (305) includes vertical openings (305a) respectively disposed on the first insert (201a) and the second insert (201b) and both cooperating with the movable plate (301b). The movable plate (301b) is elastically connected to the inner wall of the mounting cavity (202b) through a third spring (305b). The arc-shaped box (304a) is provided with a guide opening (305c), and the guide opening (305c) is provided with an arc-shaped rod (305d) cooperating with the movable plate (301b).

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