A new electrically powered trailer

Abstract

The application discloses a novel electric trailer, which comprises a frame, a pair of front steering wheels and a pair of rear driving wheels arranged at the bottom of the frame, a pair of rear supporting rods arranged at the rear end of the frame, a same transmission shaft horizontally arranged and capable of rotating on the rear supporting rods and fixed at the lower ends of the two rear supporting rods, two rear driving wheels fixed at the two ends of the transmission shaft, a motor vertically arranged on the transmission shaft, a worm fixed on the output end of the motor and a worm wheel engaged with the worm fixed on the transmission shaft, a plurality of ball bearings arranged on the transmission shaft and a mounting hole formed in the rear supporting rod, and a waterproof cover, a battery and a control module modularly mounted on the transmission shaft and the rear supporting rod through the ball bearings and the mounting hole, wherein the waterproof cover entirely wraps the motor, the worm wheel and the worm, and the novel electric trailer has the advantages of compact structure, reasonable arrangement and convenient disassembly and assembly.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and in particular to a novel electric trailer. Background Technology

[0002] Electric trailers are a common mode of transportation, often used for activities such as camping and picnics. They can be pulled entirely by human power or assisted by an electric motor. Compared to unpowered trailers, electric trailers are more labor-saving and convenient, especially for use on uphill roads, and are therefore increasingly favored by consumers.

[0003] Existing electric trailers typically use hub motors or motors mounted laterally on the drive shaft to provide power. While this setup offers high transmission efficiency, it is inconvenient for maintenance and disassembly, and lacks modular assembly and disassembly points.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0005] Based on this, this application provides a novel electric trailer to solve one of the aforementioned technical problems.

[0006] The technical solution adopted by this application to solve its technical problem is as follows: a novel electric trailer, including a frame, a pair of front steering wheels and a pair of rear drive wheels are provided at the bottom of the frame, the frame includes a pair of rear support rods provided at its rear end, the lower ends of the two rear support rods are horizontally inserted and fixed to the same drive shaft, the drive shaft is horizontally arranged and can rotate on the rear support rods, the two rear drive wheels are fixed at both ends of the drive shaft, a motor is vertically arranged on the drive shaft, a worm gear is fixed on the output end of the motor, and a worm wheel that meshes with the worm gear is fixed on the drive shaft; a plurality of ball bearings are provided on the drive shaft, and mounting holes are provided on the rear support rods. Through the ball bearings and mounting holes, a waterproof cover, a battery and a control module are modularly mounted on the drive shaft and the rear support rods, and the waterproof cover completely covers the motor, worm wheel and worm gear.

[0007] In some embodiments, a mounting ring is formed at the bottom of the rear support rod, the drive shaft is rotatably disposed within the mounting ring via the ball bearing, and a mounting plate is fixed to one side of the mounting ring.

[0008] In some embodiments, the worm gear and worm are enclosed by a mounting housing, and a mounting post is formed on one side of the mounting housing. The mounting post can be fixed to the mounting plate, and the motor is fixed to the top of the mounting housing.

[0009] In some embodiments, one side of the waterproof cover is disposed on the ball bearing, and the other side is fixed to the rear support rod by fasteners, the fasteners being inserted into the mounting holes, and the waterproof cover having an opening groove for fastener assembly.

[0010] In some embodiments, the top of the battery and control module is fastened to the vehicle frame by fasteners, and a limiting groove is formed at its bottom. A plurality of limiting seats are formed in the limiting groove, and the limiting seats are used to accommodate the ball bearing.

[0011] In some embodiments, the frame can be folded laterally for storage, and a fabric hopper is fixedly installed inside the frame.

[0012] In some embodiments, a telescopic rod is rotatably provided at the front end of the frame.

[0013] The advantages of this application are as follows: the motor is set vertically, and the worm gear at the output end of the motor drives the worm wheel to rotate, thereby driving the transmission shaft to rotate. The transmission efficiency is relatively high, and the motor is easy to disassemble and maintain. In addition, the motor is covered by a motor cover, which can effectively protect the motor. The motor cover, battery and control module are modularly installed on the transmission shaft and rear support rod at the rear end of the frame through ball bearings on the transmission shaft, mounting holes on the rear support rod and fasteners. This optimizes the installation position of the components, and the installation position is reasonable and compact. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional schematic diagram of the electric trailer of this application.

[0016] Figure 2 This is a schematic diagram of the vehicle frame for this application.

[0017] Figure 3 This is a schematic diagram of the assembly of the rear-end components of the vehicle frame in this application.

[0018] Figure 4 This is a schematic diagram of the motor assembly in this application.

[0019] Figure 5 This is a schematic diagram of the battery and control module assembly in this application.

[0020] Figure 6 This is a schematic diagram of the ball bearing installation according to this application.

[0021] Figure 7 This is a schematic cross-sectional view of the motor in this application.

[0022] The following are the reference numerals: 1. Frame, 2. Front steering wheel, 3. Rear drive wheel, 4. Rear support rod, 401. Mounting ring, 5. Drive shaft, 6. Worm gear, 7. Worm wheel, 8. Ball bearing, 9. Mounting hole, 10. Waterproof cover, 11. Battery and control module, 12. Mounting plate, 13. Mounting housing, 1301. Mounting post, 14. Opening slot, 15. Limiting slot, 16. Limiting seat, 17. Fabric hopper, 18. Tie rod, 19. Motor. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0024] In the embodiments of this application, please refer to Figure 1-7 As shown, this novel electric trailer mainly includes: a frame 1, with a pair of front steering wheels 2 and a pair of rear drive wheels 3 at the bottom of the frame 1; the frame 1 includes a pair of rear support rods 4 at its rear end; the lower ends of the two rear support rods 4 are horizontally inserted and fixed to the same drive shaft 5; the drive shaft 5 is horizontally arranged and can rotate on the rear support rods 4; the two rear drive wheels 3 are fixed to both ends of the drive shaft 5; a motor 19 is vertically arranged on the drive shaft 5; a worm gear 6 is fixed to the output end of the motor 19; a worm wheel 7 that meshes with the worm gear 6 is fixed on the drive shaft 5; several ball bearings 8 are arranged on the drive shaft 5; mounting holes 9 are opened on the rear support rods 4; a waterproof cover 10 and a battery and control module 11 are modularly installed on the drive shaft 5 and the rear support rods 4 through the ball bearings 8 and the mounting holes 9; the waterproof cover 10 completely encloses the motor 19, the worm wheel 7 and the worm gear 6.

[0025] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0026] like Figure 4-5As shown, a mounting ring 401 is formed at the bottom of the rear support rod 4. The drive shaft 5 is rotatably mounted in the mounting ring 401 through the ball bearing 8. A mounting plate 12 is fixed on one side of the mounting ring 401. When the motor 19 drives the drive shaft 5 to rotate, the drive shaft 5 can rotate smoothly relative to the mounting ring 401 due to the action of the ball bearing 8.

[0027] Furthermore, the worm gear 7 and worm 6 are enclosed by a mounting housing 13. A mounting post 1301 is formed on one side of the mounting housing 13, which can be fixed on the mounting plate 12. The motor 19 is fixed on the top of the mounting housing 13. One side of the mounting housing 13 is open. During assembly, the mounting housing 13 is horizontally sleeved on the transmission shaft 5. After the worm gear 7 is assembled into the mounting housing 13, a baffle is used to fix the open side of the mounting housing 13 to the mounting housing 13 to close the opening. The mounting plate 12 has several mounting holes. These holes are used for fastener assembly when the mounting post 1301 is fixed on the mounting plate 12. The fasteners here can be screws and nuts.

[0028] Furthermore, combined with Figure 3 As shown, one side of the waterproof cover 10 is mounted on the ball bearing 8, and the other side is fixed to the rear support rod 4 by fasteners. The fasteners are inserted into the mounting holes 9. The waterproof cover 10 has an opening groove 14 for the fasteners to be assembled. The waterproof cover 10 is composed of two parts joined together by fasteners. The ball bearing 8 serves as the fulcrum for mounting the waterproof cover 10, and the waterproof cover 10 is fixed to the ball bearing 8. The other fixed fulcrum for the waterproof cover 10 is the mounting hole 9 on the rear support rod 4. The fasteners at this location mainly serve to limit the movement and prevent the protective cover from rotating.

[0029] like Figure 4-5 As shown, the top of the battery and control module 11 is fixed to the frame 1 by fasteners, and a limiting groove 15 is formed at its bottom. Several limiting seats 16 are formed in the limiting groove 15. The limiting seats 16 are used to accommodate the ball bearing 8. By placing the ball bearing 8 in the limiting seat 16, the battery and control module 11 is limited. The battery and control module 11 includes a battery pack and a control module. The control module includes components such as a switch, a charging port, and a PCB circuit board. The battery pack provides power to the motor 19, and the control module enables the motor 19 to work.

[0030] like Figure 1-2 As shown, the frame 1 can be folded horizontally for storage. A fabric hopper 17 is fixedly installed inside the frame 1. When the frame 1 is folded, the fabric hopper 17 will naturally fold and be stored along with the frame 1.

[0031] Furthermore, the front end of the frame 1 is rotatably equipped with a telescopic pull rod 18, which is connected to the steering synchronization mechanism of the trailer. Pulling the pull rod 18 left or right can drive the front steering wheel 2 to deflect synchronously.

[0032] like Figure 6-7 As shown, the worm gear 7 is pressed and fixed on the transmission shaft 5 by the bushing. When installing the motor 19, the worm 6 is vertically inserted into the mounting housing 13, and then the worm gear 7 is installed into the mounting housing 13 so that the worm gear 7 and the worm 6 mesh. Finally, the motor 19 is fixed to the top of the mounting housing 13, and then the waterproof cover 10 is fixed to the transmission shaft 5 to complete the assembly of the motor 19. The motor 19 is relatively easy to disassemble and assemble, and can protect the motor 19 well. The overall assembly is reasonable and compact.

[0033] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A new electrically driven trailer comprising a frame, a pair of front steering wheels and a pair of rear driving wheels arranged at the bottom of the frame, characterized in that, The frame includes a pair of rear support rods at its rear end. The lower ends of the two rear support rods are horizontally inserted and fixed with the same drive shaft. The drive shaft is horizontally arranged and can rotate on the rear support rods. The two rear drive wheels are fixed at both ends of the drive shaft. A motor is vertically arranged on the drive shaft. A worm is fixed on the output end of the motor. A worm wheel that meshes with the worm is fixed on the drive shaft. The drive shaft is equipped with several ball bearings, and the rear support rod has mounting holes. Through the ball bearings and mounting holes, a waterproof cover, battery, and control module are modularly mounted on the drive shaft and the rear support rod. The waterproof cover completely encloses the motor, worm gear, and worm.

2. A new electrically powered trailer as claimed in claim 1, characterized in that, A mounting ring is formed at the bottom of the rear support rod, and the drive shaft is rotatably mounted in the mounting ring via the ball bearing. A mounting plate is fixed to one side of the mounting ring.

3. A new electrically powered trailer as claimed in claim 2, characterized in that, The worm gear and worm are enclosed by a mounting housing, and a mounting post is formed on one side of the mounting housing. The mounting post can be fixed to the mounting plate, and the motor is fixed to the top of the mounting housing.

4. A new electrically powered trailer as claimed in claim 1, characterized in that, One side of the waterproof cover is mounted on the ball bearing, and the other side is fixed to the rear support rod by fasteners. The fasteners are inserted into the mounting holes, and the waterproof cover has an opening groove for the fasteners to be assembled.

5. A novel electric trailer according to claim 1, characterized in that, The top of the battery and control module is fastened to the vehicle frame by fasteners, and a limiting groove is formed at its bottom. Several limiting seats are formed in the limiting groove, and the limiting seats are used to accommodate the ball bearing.

6. A novel electric trailer according to claim 1, characterized in that, The frame can be folded horizontally for storage, and a fabric hopper is fixedly installed inside the frame.

7. A novel electric trailer according to claim 1, characterized in that, The front end of the frame is equipped with a retractable tie rod.

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