Auxiliary wheel device of two-wheeled electric vehicle and electric push rod of auxiliary wheel device

Abstract

The auxiliary wheel device of the two-wheeled electric vehicle comprises an auxiliary wheel support and the electric push rod, the auxiliary wheel support comprises an inverted-U-shaped frame, auxiliary wheels, screws and screw nuts, the two auxiliary wheels are installed at the two ends of the bottom of the inverted-U-shaped frame respectively, and the two ends of the top of the inverted-U-shaped frame are provided with screw installation blocks with screw holes respectively. The two ends of the screw movably penetrate through two screw mounting blocks with screw holes and then are in threaded connection with screw nuts, an electric push rod connecting piece is mounted on at least one side of the bottom of the inverted-U-shaped frame, and the electric push rod is mounted on the electric push rod connecting piece through a screw column and a screw column nut. The auxiliary wheel of the device can be lifted or lowered, so that the balance of the two-wheeled electric vehicle is kept, and a green hand is assisted to learn to ride the two-wheeled electric vehicle more quickly.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary wheel devices for electric vehicles, and in particular relates to an auxiliary wheel device for a two-wheeled electric vehicle and an electric push rod thereof. Background Art

[0002] An electric vehicle training wheel is a device that uses motor power to raise or lower the training wheels to keep the electric vehicle balanced. It can help novices learn to ride a two-wheeled electric vehicle faster.

[0003] Currently, most of the auxiliary wheels for electric vehicles on the market use a variable speed gear to drive the auxiliary wheels to be raised or lowered, and the power limiting switch of the electric push rod used is set on the side of the push rod, which will cause the diameter of the push rod to increase relatively, that is, the volume of the electric push rod to increase relatively, increasing the cost of manufacturing consumables. At the same time, the reciprocating motion of the traditional push rod is controlled by a micro switch to control the push rod stroke, which will make the auxiliary wheel device of the two-wheeled electric vehicle unsuitable for adjusting the telescopic control. Summary of the Invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides an auxiliary wheel device and an electric push rod for a two-wheeled electric vehicle. The specific solutions are as follows:

[0005] The electric push rod comprises a telescopic mechanism, a synchronous wheel fixing part, a synchronous wheel one, a synchronous wheel two, a synchronous wheel belt and a motor. The telescopic mechanism comprises a screw rod, a spring block, a movable cylinder, a fixed cylinder, a spring two, a spring three, a screw column fixing block, a screw column, a spring one and a screw column nut. The spring block is connected to one end of the screw rod, a screw rod nut is threadedly connected to the screw rod, the screw nut is installed at one end of the movable cylinder, the spring two sleeves are arranged between the screw rod nut and the spring block, the screw column fixing block is installed at the other end of the movable cylinder, one end of the screw column is installed on the screw column fixing block

[0006] Furthermore, it comprises a motor housing, the motor is installed in the motor housing, and the motor housing is installed on the synchronous wheel fixing member.

[0007] Furthermore, it also includes a push rod mounting bolt and an electric vehicle connecting piece, the push rod mounting bolt and the electric vehicle connecting piece are threadedly connected, and the push rod mounting bolt is fixed on the fixing cylinder.

[0008] Furthermore, the electric vehicle connecting piece is composed of a push rod mounting nut and a flat fork connection.

[0009] Furthermore, the synchronous wheel fixing part is a fixed block, the fixed cylinder is installed on one side of the fixed block, and the synchronous wheel one and the synchronous wheel two are respectively installed on the other side of the fixed block, or the synchronous wheel fixing part is a fixed shell, the synchronous wheel one and the synchronous wheel two are respectively arranged in the fixed shell, the fixed cylinder is installed on the outside of the fixed shell, and the fixed shell is square.

[0010] Furthermore, the fixed cylinder and the movable cylinder are respectively circular sleeves or square sleeves.

[0011] Furthermore, the spring one, spring two and spring three are compression springs respectively.

[0012] An auxiliary wheel device for a two-wheeled electric vehicle comprises an auxiliary wheel, an auxiliary wheel bracket and an electric push rod mounted on the auxiliary wheel bracket, the auxiliary wheel bracket comprising an inverted U-shaped frame, a screw and a screw nut, two auxiliary wheels are respectively mounted on the two ends of the bottom of the inverted U-shaped frame, two ends of the top of the inverted U-shaped frame are respectively provided with screw mounting blocks with screw holes, two ends of the screw are respectively movably passed through two screw mounting blocks with screw holes and then threadedly connected to the screw nuts, at least one side of the bottom of the inverted U-shaped frame is provided with an electric push rod connecting piece with a mounting hole, and the electric push rod is mounted on the electric push rod connecting piece through the screw column and the screw column nut.

[0013] Furthermore, it also includes a self-resetting forward and reverse switch, which is connected to the motor.

[0014] Advantages of the present invention

[0015] This new two-wheeled electric vehicle training wheel device can be installed on existing two-wheeled electric vehicles. An electric push rod drives the training wheels on the training wheel frame to raise or lower them, thereby maintaining the balance of the two-wheeled electric vehicle. This helps novices learn to ride the two-wheeled electric vehicle more quickly. It has the advantages of a simple structure, high transmission efficiency, and low production cost, and is widely applicable in the field of industrial automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the auxiliary wheel device for a two-wheeled electric vehicle of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the electric push rod.

[0018] Figure 3 for Figure 2 Schematic diagram of the structure of the electric vehicle connecting piece.

[0019] Figure 4 for Figure 1 Schematic diagram of the structure of the auxiliary wheel bracket.

[0020] Figure 5 for Figure 3 Schematic diagram of the side structure.

[0021] Figure 6 for Figure 1 A schematic structural diagram of a two-wheeled electric vehicle auxiliary wheel device installed on an electric vehicle.

[0022] Figure 7 for Figure 6 A magnified view of the structure.

[0023] In the picture:

[0024] 1. Movable cylinder; 2. Fixed cylinder; 3. Screw; 4. Screw nut; 5. Spring stopper; 6. Screw column; 7. Nut; 8. Spring 1; 9. Spring 2; 10. Spring 3; 11. Push rod mounting bolt; 12. Motor; 13. Synchronous wheel 1; 14. Synchronous wheel 2; 15. Synchronous wheel belt; 16. Synchronous wheel fixing piece; 17. Screw column fixing block; 18. Electric vehicle connecting piece; 1801. Push rod mounting nut; 1802. Flat fork; 19. U-shaped frame; 20. Auxiliary wheel; 21. Electric push rod connecting piece with mounting hole; 22. Screw; 23. Screw connecting block with screw hole; 24. Screw nut; 25. The original double-support large tripod of the two-wheeled electric vehicle. DETAILED DESCRIPTION

[0025] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the specific embodiments are not intended to limit the scope of rights of the present invention.

[0026] like Figures 1 to 7 As shown, the auxiliary wheel device of the two-wheeled electric vehicle provided in this specific embodiment includes an auxiliary wheel, an auxiliary wheel bracket, an electric push rod installed on the auxiliary wheel bracket, and a self-resetting forward and reverse switch.

[0027] The electric push rod includes a telescopic mechanism, a synchronous wheel fixing member 16, a synchronous wheel 13, a synchronous wheel 2 14, a synchronous wheel belt 15, a motor 12, a motor housing (not shown), a push rod mounting bolt 11, and an electric vehicle connector 18. The telescopic mechanism includes a screw rod 3, a spring stopper 5, a movable cylinder 1, a fixed cylinder 2, a spring 2 9, a spring 3 10, a screw column fixing block 17, a screw column 6, a spring 1 8, and a screw column nut 7. The spring 1 8, spring 2 9, and spring 3 10 are compression springs. The fixed cylinder 2 and movable cylinder 1 are circular sleeves or square sleeves, respectively.

[0028] A spring stopper 5 is welded to one end of the screw rod 3. The function of the spring stopper 5 is to prevent the spring 1 from sliding out of the screw rod 3. A screw nut 4 is threadedly connected to the screw rod 3. The screw nut 4 is installed at one end of the movable cylinder 1. A spring 2 9 is sleeved between the screw nut 4 and the spring stopper 5. The function of the spring 2 9 is to compress the screw nut 4 when it moves downward to generate reverse pressure to stop the movable cylinder 1 from moving. A screw column fixing block 17 is installed at the other end of the movable cylinder 1. One end of the screw column 6 is installed on the screw column fixing block 17. The other end is sleeved with a spring 1 8 and then threadedly connected to the screw column nut 7. The function of the spring 1 8 is to act as a buffer when the auxiliary wheel bracket is lowered or raised. The function of the screw column 6 and the screw column nut 7 is to be used to connect to the electric push rod connecting piece 21 with a mounting hole, so that the electric push rod of this embodiment can be installed on the auxiliary wheel bracket. The other end of the screw 3 passes through the synchronous wheel fixing member 16 and connects to the synchronous wheel 2 14. The spring 3 10 is mounted between the screw nut 4 and the synchronous wheel fixing member 16. The function of the spring 3 10 is to compress the screw nut 4 when it moves upward to generate reverse pressure, causing the movable cylinder 1 to stop moving. The fixed cylinder 2 is mounted outside the movable cylinder 1, and the movable cylinder 1 is longer than the fixed cylinder 2. The synchronous wheel 1 13 and the synchronous wheel 2 14 are connected by a synchronous wheel belt 15. The synchronous wheel fixing member 16 is a fixed block, with the fixed cylinder 2 mounted on one side of the fixed block, and the synchronous wheel 1 13 and the synchronous wheel 2 14 respectively mounted on the other side of the fixed block. Alternatively, the synchronous wheel fixing member 16 is a fixed shell, with the synchronous wheel 1 13 and the synchronous wheel 2 14 respectively located inside the fixed shell, and the fixed cylinder 2 mounted on the outside of the fixed shell. The fixed shell is square in shape. The synchronous wheel fixing member 16 in this embodiment is a fixed shell. The push rod mounting bolt is welded to one side of the fixing tube, and the electric vehicle connector is composed of a push rod mounting nut 1801 and a flat fork 1802. The electric vehicle connector 18 is threadedly connected to the push rod mounting bolt 11. The purpose is to facilitate the electric push rod to be inserted into the rear wheel shaft of the two-wheeled electric vehicle through the electric vehicle connector 18 and then screwed into the nut, so that the electric push rod is locked on the rear wheel of the two-wheeled electric vehicle.

[0029] The output shaft of the motor 12 passes through the synchronous wheel fixing member 16 and is connected to the synchronous wheel 1 13. The purpose is that when the motor 12 is controlled to rotate forward, the motor 12 sequentially drives the synchronous wheel 1 13, the synchronous wheel 2 14, and the screw 3 to rotate forward, thereby lowering the movable cylinder 1 on the screw 3. When the motor 12 is controlled to rotate reversely, the motor 12 sequentially drives the synchronous wheel 1 13, the synchronous wheel 2 14, and the screw 3 to rotate reversely, thereby raising the movable cylinder 1 on the screw 3. To protect the motor 12 from environmental influences, the motor 12 is mounted outside the motor 12 in a motor housing, and the motor housing is mounted on the synchronous wheel fixing member 16.

[0030] The auxiliary wheel bracket includes an inverted U-shaped frame 20, a screw 22, and a screw nut 24. Two auxiliary wheels 20 are mounted on either end of the bottom of the inverted U-shaped frame 20. A screw mounting block 21 with a screw hole is provided at each end of the top of the inverted U-shaped frame 20. The screws 22 are movably threaded through two screw connecting blocks 23 with screw holes, and then threadedly connected to the screw nuts 24. At least one side of the bottom of the inverted U-shaped frame 19 is provided with an electric push rod connecting piece 21 with mounting holes. The electric push rod is mounted on this electric push rod connecting piece 21 via a screw column 6 and a screw column nut 7. The screw 22 is used to attach the auxiliary wheel bracket to the mounting holes of the existing double-bracing large footrest 25 of the two-wheeled electric vehicle. Finally, a self-resetting forward and reverse switch is installed on the handlebar of the two-wheeled electric vehicle, and the motor 12 is connected to the self-resetting forward and reverse switch.

[0031] Working principle:

[0032] When in use, the auxiliary wheel bracket is installed on the mounting hole of the original double-support large footrest 15 of the two-wheeled electric vehicle through the screw 23 and the screw nut 24, the electric push rod is installed on the rear wheel shaft of the electric vehicle through the push rod mounting bolt 11 and the electric vehicle connector 18, and the motor 12 is connected to the 12V voltage on the two-wheeled electric vehicle.

[0033] When the forward gear of the self-resetting forward and reverse switch is manually turned on, the motor 12 rotates forward, and the motor 12 drives the synchronous wheel 13, the synchronous wheel 2 14 and the screw rod 3 to rotate forward in sequence. The movable cylinder 1 moves downward along the screw rod 3 through the screw nut 4, so that the movable cylinder 1 drives the auxiliary wheel bracket to move downward, and the auxiliary wheel bracket drives the auxiliary wheel 20 to move downward until the movable cylinder 1 moves downward and compresses the spring 2 9 to generate reverse pressure, causing the movable cylinder 1 to stop moving, and the power supply of the motor 12 is manually disconnected, thereby completing the lowering action of the auxiliary wheel 20.

[0034] When the reverse gear of the self-resetting forward and reverse switch is manually turned on, the motor 12 rotates in the reverse direction, and the motor 12 drives the synchronous wheel 13, the synchronous wheel 2 14 and the screw rod 3 to reverse in sequence. The movable cylinder 1 moves upward along the screw rod 3 through the screw nut 4, so that the movable cylinder 1 drives the auxiliary wheel bracket to move upward, and the auxiliary wheel bracket drives the auxiliary wheel 20 to move upward until the movable cylinder 1 moves upward and compresses the spring 3 10 to generate reverse pressure, causing the movable cylinder 1 to stop moving, and the motor power is manually disconnected, thereby completing the action of lifting the auxiliary wheel 20.

Claims

1. Electric linear actuator, characterized in that: The cam is connected to the drive shaft by a spring, and the cam is connected to the drive shaft by a spring, and the cam is connected to the drive shaft by a spring.

2. The electric linear actuator according to claim 1, wherein: The motor is installed in the motor housing, and the motor housing is installed on the synchronous wheel fixing part.

3. The electric linear actuator according to claim 1, wherein: It also includes a push rod mounting bolt and an electric vehicle connecting piece, wherein the push rod mounting bolt and the electric vehicle connecting piece are threadedly connected, and the push rod mounting bolt is fixed on the fixing cylinder.

4. The electric linear actuator according to claim 3, wherein: The electric vehicle connecting piece is composed of a push rod mounting nut and a flat fork.

5. The electric linear actuator according to claim 1, wherein: The synchronous wheel fixing member is a fixed block, the fixed cylinder is installed on one side of the fixed block, and the synchronous wheel 1 and the synchronous wheel 2 are respectively installed on the other side of the fixed block, or the synchronous wheel fixing member is a fixed shell, the synchronous wheel 1 and the synchronous wheel 2 are respectively arranged in the fixed shell, the fixed cylinder is installed on the outside of the fixed shell, and the fixed shell is square.

6. The electric linear actuator according to claim 1, wherein: The fixed cylinder and the movable cylinder are respectively circular sleeves or square sleeves.

7. The electric linear actuator according to claim 1, wherein: The spring 1, spring 2 and spring 3 are all compression springs.

8. A two-wheeled electric vehicle auxiliary wheel device, characterized in that: The electric push rod comprises an auxiliary wheel, an auxiliary wheel bracket and an electric push rod according to any one of claims 1 to 7 installed on the auxiliary wheel bracket, the auxiliary wheel bracket comprising an inverted U-shaped frame, a screw and a screw nut, two auxiliary wheels are respectively installed at the two ends of the bottom of the inverted U-shaped frame, and screw mounting blocks with screw holes are respectively provided at the two ends of the top of the inverted U-shaped frame. The two ends of the screw are movably passed through two screw mounting blocks with screw holes and then threadedly connected to the screw nuts. An electric push rod connecting piece with a mounting hole is provided on at least one side of the bottom of the inverted U-shaped frame, and the electric push rod is installed on the electric push rod connecting piece through a screw column and a screw column nut.

9. The auxiliary wheel device for a two-wheeled electric vehicle according to claim 8, characterized in that: It also includes a self-resetting forward and reverse switch, which is connected to the motor.

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