A vehicle travel drive mechanism for an auxiliary wheel device

Abstract

The utility model relates to the technical field of auxiliary wheel device, concretely is a kind of vehicle driving mechanism for auxiliary wheel device, including the support arm for supporting auxiliary wheel, motor mounting groove is set up on the support arm, and cover plate that can be matched with the motor mounting groove is provided;Motor is installed in the motor mounting groove, the rotating shaft of the motor can be penetrated motor mounting groove and extend to outside, and it is connected with the auxiliary wheel through overrunning clutch.This mechanism not only simple structure, good auxiliary effect, also do not affect the normal operation of vehicle, can provide better driving assistance for rider.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary wheel device technology, and in particular to a vehicle driving mechanism for an auxiliary wheel device. Background Technology

[0002] As living standards improve, motorcycles, once replaced by electric two-wheelers for commuting, are gaining popularity due to their superior range and attractive design. Riding motorcycles for transportation and long-distance travel is becoming increasingly fashionable. However, compared to electric scooters, motorcycles are typically larger and heavier, making them prone to tilting to one side or even tipping over when slowing down or stopping, posing a safety risk. Riders need to place one foot on the ground to maintain balance, which is particularly challenging for women with less strength. Therefore, existing technologies used in electric two-wheelers are being replicated in motorcycles, most commonly by installing training wheels on both sides to ensure balance.

[0003] Chinese invention patent CN117163192A discloses a fully automatic electric reversing device for motorcycles, including a fork clamp symmetrically arranged on the left and right support arms of the rear fork; a folding arm assembly including an upper support arm and a lower support arm connected by a shaft, the rotating end of the upper support arm being movably connected to the fork clamp, and a roller connected to the lower support arm; and a lower support arm pull rod, one end of which is connected to a lower support arm shaft connecting column located inside the lower support arm, the rotating end of which is movably connected to the fork clamp; and a folding drive mechanism including a worm gear reducer and a transmission rack, the transmission rack including a transmission rod and a rack connected to each other, the transmission rod being connected to the rotating end of the upper support arm. This device is not only simple in structure and occupies little space, but also has high control precision and can be well adapted to motorcycles, increasing auxiliary support during motorcycle operation, such as at slow speeds, when stopped, or when turning, effectively improving motorcycle driving safety and providing the driver with a better driving experience.

[0004] When a motorcycle loses power, such as when it runs out of fuel or the engine malfunctions, the existing training wheels cannot serve as an auxiliary power source to propel it to a repair shop. It can only be moved by pushing. Because the motorcycle is quite heavy, manual operation requires considerable effort, and even slight mishaps can easily cause it to tip over, resulting in injury.

[0005] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to overcome the problems of the prior art and provide a vehicle driving mechanism for an auxiliary wheel device, which solves the technical problem that the auxiliary wheel device of existing motorcycles cannot function as a driving device when the vehicle malfunctions.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A vehicle driving drive mechanism for an auxiliary wheel device includes a support arm for supporting the auxiliary wheel, the support arm having a motor mounting slot and a cover plate that matches the motor mounting slot; a motor is installed in the motor mounting slot, and the motor shaft can extend outward through the motor mounting slot and be connected to the auxiliary wheel via an overrunning clutch.

[0009] Furthermore, the cover plate has a through hole for the shaft to extend out, the shaft is connected to the driving component of the overrunning clutch, the overrunning clutch is fixed by the cover plate, and the driven component of the overrunning clutch is connected to the auxiliary wheel.

[0010] Furthermore, the motor is a worm gear motor.

[0011] Furthermore, the overrunning clutch is a bidirectional overrunning clutch.

[0012] Furthermore, the overrunning clutch is a controllable overrunning clutch.

[0013] Furthermore, the auxiliary wheel includes a hub that can engage with the driven member of the overrunning clutch and is locked by a snap ring.

[0014] Furthermore, the support arm is made of metal.

[0015] This utility model provides a vehicle driving mechanism for an auxiliary wheel device. By incorporating a motor, an overrunning clutch, and an auxiliary wheel within the support arm, it provides auxiliary power to drive the vehicle, enabling it to move, assist in reversing, and prevent rollover. This mechanism is not only simple in structure and provides excellent assistance, but it also does not interfere with the normal operation of the vehicle, offering riders better driving assistance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the vehicle driving mechanism for the auxiliary wheel device described in this utility model;

[0017] Figure 2 This is a schematic diagram of the motor installation of a vehicle driving drive mechanism for an auxiliary wheel device according to the present invention;

[0018] Figure 3This is an exploded view of a vehicle driving mechanism for an auxiliary wheel device according to the present invention;

[0019] Figure 4 This is a schematic diagram of the overrunning clutch and auxiliary wheel installation in a vehicle driving drive mechanism for an auxiliary wheel device according to the present invention;

[0020] Figure 5 This is a schematic diagram of the overrunning clutch and the auxiliary wheel in a vehicle driving drive mechanism for an auxiliary wheel device according to the present invention before assembly;

[0021] Figure 6 This is a schematic diagram of a vehicle driving drive mechanism for an auxiliary wheel device according to the present invention applied to the auxiliary wheel device.

[0022] Illustration markings:

[0023] 1-Auxiliary wheel, 2-Support arm, 3-Motor mounting slot, 4-Cover plate, 5-Motor, 6-Shaft, 7-Overrunning clutch, 8-Shaft through hole, 9-Hub, 10-Snap ring, 11-Auxiliary wheel assembly, 12-Left auxiliary wheel assembly, 13-Right auxiliary wheel assembly. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] like Figures 1-3 As shown, this solution provides a vehicle driving mechanism for an auxiliary wheel device, including a support arm 2 for supporting the auxiliary wheel 1. The support arm 2 has a motor mounting slot 3 and a cover plate 4 that matches the motor mounting slot 3. A motor 5 is installed in the motor mounting slot 3, and the rotating shaft 6 of the motor 5 extends outward through the motor mounting slot 3 and is connected to the auxiliary wheel 1 via an overrunning clutch 7. The support arm 2 is made of metal, including but not limited to aluminum.

[0026] like Figure 6 As shown, specifically, the auxiliary wheel device 11 includes a left auxiliary wheel device 12 and a right auxiliary wheel device 13, which are mounted on the left and right sides of the two-wheeled vehicle. When the vehicle is at low speed or stopped, the auxiliary wheel device works, and at this time, the auxiliary wheels are in contact with the ground.

[0027] The working modes include:

[0028] Motor-driven mode: The auxiliary wheel is driven by the motor to move clockwise or counterclockwise, thereby enabling the vehicle to move forward or backward.

[0029] When the motor is not working: the overrunning clutch 7 is driven by the vehicle's own power to rotate the auxiliary wheel 1, assisting the vehicle in safe driving or safe reversing.

[0030] like Figure 3 As shown, in one embodiment of the present invention, the cover plate 4 has a through hole 8 for the shaft 6 to extend out. The shaft 6 is connected to the driving component of the overrunning clutch 7. The overrunning clutch 7 is fixed by the cover plate 4. The driven component of the overrunning clutch 7 is connected to the auxiliary wheel 1.

[0031] Specifically, by setting an overrunning clutch 7 between the motor 5 and the auxiliary wheel 1, the motor 5 can drive the auxiliary wheel 1 to rotate, or the auxiliary wheel 1 can be driven by the movement of the vehicle when the motor 5 is not working, thus achieving passive assistance, such as the slow movement of the vehicle, pushing the vehicle forward, or pushing the vehicle backward.

[0032] In this embodiment, the motor 5 is a worm gear motor. Specifically, the worm gear motor consists of a motor part and a worm gear reduction mechanism. It is a power device that integrates the worm gear reduction mechanism with the motor. With its unique transmission structure, it is widely used in low-speed, high-torque, and precision control scenarios.

[0033] Its working principle is as follows: When the worm rotates, it meshes with the worm wheel through the helical teeth, converting the high-speed, low-torque motor power into low-speed, high-torque output. Since the helix angle of the worm is usually smaller than the friction angle, the transmission has a self-locking property, that is, the worm wheel cannot reverse the worm, similar to a screw that cannot reverse itself after being screwed into a nut.

[0034] This embodiment achieves control of the overrunning clutch through the locking property of its transmission.

[0035] In this embodiment, the overrunning clutch 7 is a bidirectional overrunning clutch, and its structure includes:

[0036] Driven component: Usually an internal gear ring, fixed to the engine or power source, responsible for transmitting torque.

[0037] Driven component: Contains two independent friction plate assemblies that can rotate independently and engage or disengage through friction to achieve the transmission and interruption of power.

[0038] Friction plates: Made of high-strength materials, they provide torque transmission when engaged and interrupt power transmission when disengaged, and are one of the key components to ensure the normal operation of the clutch.

[0039] Locking mechanism: Includes inner and outer rings and a locking spring, used to control the engagement and disengagement of the two parts. When the spring is compressed, the friction plates fit tightly together, enabling power transmission; when the spring is relaxed, the friction plates separate.

[0040] Overtaking lever: It is designed with a special overtaking structure, which allows power to be transmitted briefly even when the clutch is not fully engaged, thus improving shift smoothness.

[0041] Control mechanism: including pedals, cables, etc., which the driver operates to engage and disengage the clutch. However, in some automated equipment, the control mechanism may be replaced by an electronic control system.

[0042] Its working principle includes:

[0043] Power input and direction determination: Power is transmitted from the input shaft to the inner ring, causing it to start rotating. At the same time, the control mechanism monitors the direction of power rotation in real time through sensors and other devices to determine the appropriate state of the clutch.

[0044] Engagement process: If the power direction is consistent with the first preset direction of the clutch, the control mechanism will activate the corresponding spring, so that the first set of friction plates tightly fits the inner and outer rings, realizing smooth power transmission; similarly, if the power direction is consistent with the second direction, the second set of friction plates will be activated to complete the power transmission.

[0045] Separation process: When the power direction changes, the control mechanism quickly adjusts the preload of the spring to separate the previously engaged friction plate group, avoiding the transmission of reverse torque. At the same time, another set of friction plate groups prepares to engage to adapt to the new power direction.

[0046] This embodiment employs a combination design of a worm gear motor, a two-way overrunning clutch, and an auxiliary wheel. This allows the worm gear motor to directly drive the auxiliary wheel to rotate clockwise and counterclockwise, enabling forward and reverse movement. Furthermore, even when the worm gear motor is not operating, the vehicle can still move forward or be pushed backward by its own power source.

[0047] In this embodiment, the overrunning clutch 7 can also be a controllable overrunning clutch, which adds an active control unit to the traditional overrunning clutch to achieve precise adjustment of the overrunning function. Its main structure includes:

[0048] Basic transmission components: drive wheel / inner ring: connects to the power source, such as a motor or engine, and transmits torque.

[0049] Driven wheel / outer ring: Connects to the load and enables power transmission or idling through an overrunning mechanism.

[0050] Overrunning elements: commonly pawls, rollers, or friction plates, similar to a one-way clutch, but with the addition of a controllable triggering structure.

[0051] Controllable adjustment mechanism hydraulic / pneumatic control unit: It controls the engagement / disengagement of the overrunning element by pushing the piston with oil or air pressure. For example, in engineering machinery, the clutch is achieved by adjusting the pressure of the hydraulic valve.

[0052] Electromagnetic control module: It uses an electromagnetic coil to generate magnetic force, which attracts the armature and drives the overrunning element to move. It is commonly used in automated equipment.

[0053] Electronic sensors and controllers: integrate speed sensors and position sensors to monitor the speed difference between the master and slave ends in real time, and control the actuator by outputting electrical signals through PLC or MCU.

[0054] Mechanical linkage devices, such as cams and lever mechanisms, directly control the overtaking element through manual or mechanical linkages, and are commonly used in scenarios that require manual intervention.

[0055] Working principle: From "passive overtaking" to "active control"

[0056] The core of a controllable overrunning clutch lies in actively controlling the overrunning state through an external input signal. The workflow can be broken down as follows:

[0057] The condition monitoring sensor detects the speed, torque, or position of the active and driven ends in real time.

[0058] For example, when the speed of the driving wheel is higher than that of the driven wheel, the conventional overrunning clutch will automatically engage; while the controllable type will first determine whether the preset control conditions are met before engaging.

[0059] Control signal generators, such as PLCs, output electrical signals based on sensor data and preset logic.

[0060] Electromagnetic control of actuator movement: An electrical signal activates the electromagnetic coil, the armature pulls the pawl, locking the overrunning element and the driven wheel, thus realizing power transmission.

[0061] Hydraulic control: an electrical signal drives a solenoid valve, hydraulic oil pushes a piston, presses against a friction plate, and transmits torque through friction.

[0062] When overtaking is required, the overtaking element automatically slips, but the controllable type can be forcibly locked by the control mechanism, such as prohibiting overtaking during emergency braking.

[0063] This embodiment employs a combination design of a worm gear motor, a controllable overrunning clutch, and an auxiliary wheel. This design enables the worm gear motor to directly drive the auxiliary wheel to rotate clockwise and counterclockwise, achieving forward and reverse movement. Furthermore, even when the worm gear motor is not operating, the vehicle itself can drive the vehicle forward and lock the clockwise rotation, effectively functioning as a one-way clutch to prevent the vehicle from rolling backward.

[0064] like Figure 4 and Figure 5 As shown, the auxiliary wheel 1 includes a hub 9 that can engage with the driven member of the overrunning clutch 7 and is locked by a snap ring 10.

[0065] The structure adopted in this embodiment enables the rapid assembly of the auxiliary wheel and the overrunning clutch 7. The retaining ring 10 can not only achieve limit locking, but also prevent the wheel hub 9 from sliding relative to the overrunning clutch 7.

[0066] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle driving mechanism for an auxiliary wheel device, characterized in that, It includes a support arm (2) for supporting the auxiliary wheel (1), the support arm (2) has a motor mounting slot (3) and a cover plate (4) that matches the motor mounting slot (3); a motor (5) is installed in the motor mounting slot (3), and the shaft (6) of the motor (5) can extend outward through the motor mounting slot (3) and be connected to the auxiliary wheel (1) via an overrunning clutch (7).

2. The vehicle driving mechanism for an auxiliary wheel device according to claim 1, characterized in that, The cover plate (4) has a through hole (8) for the shaft (6) to extend out. The shaft (6) is connected to the driving part of the overrunning clutch (7). The overrunning clutch (7) is fixed by the cover plate (4). The driven part of the overrunning clutch (7) is connected to the auxiliary wheel (1).

3. A vehicle driving mechanism for an auxiliary wheel device according to claim 1 or 2, characterized in that, The motor (5) is a worm gear motor.

4. A vehicle driving mechanism for an auxiliary wheel device according to claim 3, characterized in that, The overrunning clutch (7) is a two-way overrunning clutch.

5. A vehicle driving mechanism for an auxiliary wheel device according to claim 3, characterized in that, The overrunning clutch (7) is a controllable overrunning clutch.

6. A vehicle driving mechanism for an auxiliary wheel device according to claim 2, characterized in that, The auxiliary wheel (1) includes a hub (9) that can engage with the driven member of the overrunning clutch (7) and is locked by a snap ring (10).

7. A vehicle driving mechanism for an auxiliary wheel device according to claim 1, characterized in that, The support arm (2) is made of metal.

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