TWI774094B - Tiltable vehicle with two front wheels - Google Patents

Abstract

A tiltable vehicle with two front wheels, comprising: a body; two front wheels; a tilting mechanism and a pair of front shock absorbers, arranged between the body and the front wheels, and used to support the front wheels, so that the The front wheels can move up and down relative to the vehicle body; a locking device is used to lock the tilt mechanism and the pair of front shock absorbers or unlock them to limit the up and down movement of the front wheels or release the restriction; an engine speed sensor , for sensing an engine speed; a vehicle speed sensor for sensing a vehicle speed; a lock switch; and a controller electrically connected to the engine speed sensor, the vehicle speed sensor and the lock switch , wherein, when the locking switch is pressed, the controller determines whether to control the locking device to switch from an unlocked state to a locked state according to the engine speed and the vehicle speed.

Description

Tiltable vehicle with two front wheels

The present invention relates to a vehicle, in particular to a tiltable vehicle with two front wheels.

As is well known, a typical locomotive usually has a rear wheel and a front wheel coaxial with the rear wheel. Although this unstable design with only one rear wheel and one front wheel brings the flexibility of operation, it also sacrifices the stability when riding, so that the rider must rely on his own sense of balance to control the locomotive to avoid the locomotive. Dumping, therefore, the elderly or those with poor balance are not suitable for riding motorcycles.

Therefore, in order to improve the stability of the locomotive, in recent years, relevant manufacturers have actively developed and produced three-wheeled locomotives with two front wheels. Referring to FIGS. 1 and 2 , for example, the ROC Patent Publication No. TWI346055 discloses a tilt locking mechanism for a three-wheeled locomotive with two front wheels, which includes a motor 11 , a motor 11 that can be driven by the motor 11 and has a gear 120 at the end. The driving rod 12 , a transmission gear 13 meshing with the gear 120 of the driving rod 12 , an actuating rod 14 integral with the transmission gear 13 , and a pair of the actuating rods 14 are provided and connected to a hydraulic circuit 15 the oil pump 16. When starting the motor 11 It will drive the driving rod 12 to rotate, and drive the transmission gear 13 to rotate through the gear 120 at the end of the driving rod 12, and finally drive the actuating rod 14 integrated with the transmission gear 13, and act on the oil pump 16 to increase the hydraulic pressure. Circuit 15 provides drive oil pressure. Among them, the driving oil pressure is mainly used for a tilt mechanism locking device 181 and a front fork stroke stop device 182 . The cam 17 pivoted on the actuating rod 14 is driven by a mechanism to control whether the rear wheel brake 183 is linked or not. Furthermore, the TWI346055 patent also discloses that the electronic control unit (not shown) can actuate the motor 11 according to the swing angle of the tilt mechanism (not shown) and the vehicle speed.

As mentioned above, the above-mentioned patent case of TWI346055 mainly discloses the use of a lever mechanism to push the oil pump 16 , and the cam 17 is only used as a means to link the rear brake 183 . In addition, the design of the oil pump 16 driven by a lever mechanism is difficult to dispose in space, and there are concerns such as enlargement, which adversely affects the miniaturization of the disposition space of the whole tricycle.

Therefore, the object of the present invention is to provide a tiltable vehicle with two front wheels.

Therefore, the tiltable vehicle with two front wheels in the technology of claim 1 of the present invention vehicle, including: a vehicle body; two front wheels, arranged on the front side of the vehicle body, and side by side; a tilt mechanism and a pair of front shock absorbers, arranged between the vehicle body and the front wheels, and used to support the Waiting for the front wheels to enable the front wheels to move up and down relative to the vehicle body; a locking device for locking or unlocking the tilt mechanism and the pair of front shock absorbers to restrict the up and down movement of the front wheels or release the restriction; a an engine speed sensor for sensing an engine speed; a vehicle speed sensor for sensing a vehicle speed; a lock switch; an unlock switch; The sensor is electrically connected to the locking switch and the unlocking switch, wherein when the locking switch is pressed, the controller determines whether to control the locking device to switch from an unlocked state to a state according to the engine speed and the vehicle speed. In a locked state, when the engine speed is within a first engine speed range representing that the engine is stationary, the vehicle speed is less than a first vehicle speed, and the lock switch is pressed, the controller controls the locking device to switch to the locked state, and then when the unlocking switch is pressed, the controller controls the locking device to switch to the unlocking state.

According to the technology of claim 2 of the present invention, for a tiltable vehicle with two front wheels, the locking device includes a first tilting mechanism locking device corresponding to the tilting mechanism, a pair of front forks corresponding to the pair of front shock absorbers A stroke locking device, and a hydraulic driving device, wherein the hydraulic driving device is used for simultaneously driving the first tilt mechanism locking device and the pair of front fork stroke locking devices to lock or unlock.

According to the technology of claim 3 of the present invention, the tiltable vehicle with two front wheels has a first motor which can be driven by the controller, and a first motor which is driven by the first motor. A cam that drives and rotates eccentrically, a roller that rolls in contact with the cam and is driven by the cam to translate within a working stroke, a master cylinder, and a hydraulic push rod, the two ends of the hydraulic push rod are respectively It is pivotally connected to the roller and extends into the master cylinder. When the roller translates within the working stroke, it can drive the hydraulic push rod to translate relative to the master cylinder within the working stroke to build up oil pressure or release oil. pressure.

For the tiltable vehicle with two front wheels in the technology of claim 4 of the present invention, the hydraulic drive device further has a cam position sensor that senses a rotation angle of the cam, and defines that the oil pressure of the master cylinder is zero. The corresponding rotation angle is about 0° and is a zero point position. When the rotation angle is about 60°, it is an unlocked position corresponding to the unlocked state and the master pump has a little oil pressure, and the rotation angle is about 120°. ° is a locked position corresponding to the locked state.

In the tiltable vehicle with two front wheels in the technology of claim 5 of the present invention, the controller includes a first current sensor for sensing a first current value flowing through the first motor, when the controller When it is determined that the locking device is to be controlled to switch from the unlocked state to the locked state, the first motor is controlled to rotate forward, so that the cam rotates from the unlocked position to the locked position, and when the first current sensor senses When it is detected that the first current value is greater than a first current threshold value, it means that the first motor has been locked, and the locking device has been switched to the locked state.

The tiltable vehicle with two front wheels in the technology of claim 6 of the present invention further includes a main switch electrically connected to the controller, wherein the hydraulic drive device further has a A housing for accommodating the cam, the roller and the hydraulic push rod, and a cover detachably covering the housing, a blocking block is provided on the inner surface of the cover, and the cam is at the unlocking position In this case, if the main switch is turned off, the controller controls the first motor to reverse rotation until the cam rotation angle is less than 3°, indicating that the cam is reset to zero, or the cam is blocked by the blocking block. When the first current sensor senses that the first current value is greater than the first current threshold value, it can also indicate that the cam is reset to zero.

In the tiltable vehicle with two front wheels in the technology of claim 7 of the present invention, when the cam is in the locked position, the cam remains in the locked position regardless of whether the main switch is turned off or turned on.

For the tiltable vehicle with two front wheels in the technology of claim 8 of the present invention, the first engine speed range is below 900 rpm, and the first vehicle speed is 10 km/hr.

For a tiltable vehicle with two front wheels in the technology of claim 9 of the present invention, when the engine speed is within a second engine speed range representing the engine idle speed and less than a continuously variable automatic transmission disengagement speed, and the vehicle speed is less than the first engine speed. When a vehicle speed is pressed and the locking switch is pressed, the controller controls the locking device to switch to the locked state, and then when the unlocking switch is pressed, the controller controls the locking device to switch to the unlocked state.

According to the technology of claim 10 of the present invention, the tiltable vehicle with two front wheels, the second engine speed range is 900rpm to 3000rpm, the continuously variable automatic transmission disengagement speed is 2000rpm, and the first vehicle speed is 10km/hr.

According to the technology of claim 11 of the present invention, for the tiltable vehicle with two front wheels, when the engine speed is within the second engine speed range and the locking device is in the locked state, when the engine speed is increased to more than one step When the automatic transmission is combined with the rotational speed, and the vehicle speed is greater than a second vehicle speed, the controller controls the locking device to automatically switch to the unlocking state.

According to the technology of claim 12 of the present invention, for the tiltable vehicle with two front wheels, the combined speed of the continuously variable automatic transmission is 2200 rpm, and the second vehicle speed is 2 km/hr.

For the tiltable vehicle with two front wheels in the technology of claim 13 of the present invention, when the engine speed is within a third engine speed range representing the riding of the vehicle, if the locking device is in the unlocked state, the control The controller controls the locking switch to fail, and if the locking device is in the locked state, the controller controls the locking device to automatically switch to the unlocked state.

For the tiltable vehicle with two front wheels in the technology of claim 14 of the present invention, the third engine speed range is 3000 rpm or more.

For the tiltable vehicle with two front wheels in the technology of claim 15 of the present invention, the engine speed sensor first transmits the engine speed to an engine control unit, and then the engine control unit transmits the engine speed to the engine through a communication interface. the controller.

For a tiltable vehicle with two front wheels in the technology of claim 16 of the present invention, the vehicle speed sensor first transmits the vehicle speed to an anti-lock braking system, and then the anti-lock braking system transmits the vehicle speed through a communication interface to the controller.

The tiltable vehicle with two front wheels in the technology of claim 17 of the present invention further includes a disc fixed on the tilting mechanism, and the locking device includes a second tilting mechanism corresponding to the tilting mechanism and having a caliper A mechanism locking device, a pair of front fork travel locking devices corresponding to the pair of front shock absorbers, and a hydraulic drive device, wherein the caliper of the second tilt mechanism locking device is used to releasably clamp the A disc, the hydraulic drive device is used to drive the pair of front fork stroke locking devices to lock or unlock.

In the technology of claim 18 of the present invention, for a tiltable vehicle with two front wheels, the hydraulic drive device has a first motor that can be driven by the controller, a cam that is driven by the first motor to rotate eccentrically, and a The cam is in rolling contact and is driven by the cam to be able to translate within a working stroke, a roller, a master cylinder, and a hydraulic push rod. Both ends of the hydraulic push rod are pivotally connected to the roller and extend into the total In the pump, when the roller translates within the working stroke, it can drive the hydraulic push rod to translate relative to the master cylinder within the working stroke to build up or release oil pressure.

According to the technology of claim 19 of the present invention, for a tiltable vehicle with two front wheels, the hydraulic drive device further has a cam position sensor that senses a rotation angle of the cam, and defines that the oil pressure of the master cylinder is zero. The corresponding rotation angle is about 0° and is a zero point position. When the rotation angle is about 60°, it is an unlocked position corresponding to the unlocked state and the master pump has a little oil pressure, and the rotation angle is about 120°. ° is a locked position corresponding to the locked state.

The tiltable vehicle with two front wheels in the technology of claim 20 of the present invention, The controller includes a first current sensor for sensing a first current value flowing through the first motor, when the controller determines to control the front fork stroke locking device to switch from the unlocked state to the locked state In the state, the first motor is controlled to rotate forward, so that the cam rotates from the unlocking position to the locking position, and when the first current sensor senses that the first current value is greater than a first current threshold value , it means that the first motor has been locked, and the front fork stroke locking device has been switched to the locked state.

For the tiltable vehicle having two front wheels in the technology of claim 21 of the present invention, the locking device further includes a second motor drivable by the controller, the controller including a sensor for sensing flow through the second motor A second current sensor with a second current value, the controller can drive the second motor to rotate forward to drive the caliper to clamp the disc until the second current sensor senses the second current When the value is greater than a second current threshold value, it indicates that the second motor has been rotated forwardly to a locked-rotor, and the locking device of the second tilting mechanism has been switched to the locked state, and then the controller can drive the second motor to reverse rotation, Until the second current sensor senses that the second current value is less than a third current threshold value, it indicates that the caliper has released the disc, and the second tilt mechanism locking device has been switched to the unlocked state, Wherein, the third current threshold is smaller than the second current threshold.

The effect of the present invention by claim 1 is: (1) when the lock switch is pressed by the user, the controller can determine whether to control the locking device to switch from the unlocked state to the vehicle speed according to the engine speed and the vehicle speed. the locked state; (2) when the When the tiltable vehicle of the wheel is locked and the engine speed is increased to a riding state higher than 3000rpm, the controller controls the locking device to automatically unlock, which can prevent the system from malfunctioning due to the failure of the speed sensor; (3) The unlocking position of the cam helps to shorten the locking and unlocking time; (4) if the user turns off the main switch (Key OFF), the controller controls the first motor to reverse rotation until the cam is reset to zero, so that the oil (5) If the main switch is turned on (Key ON) when the locking device is in the locked state, the first motor and the cam remain stationary, Or if the main switch is turned on when the locking device is not in the locked state, the first motor and the cam are rotated to the unlocked position, which can help shorten the working stroke and shorten the driving time; (6) the The hydraulic drive device directly pushes the master cylinder through the cam and other elements, which can ensure the miniaturization of the mechanism and reduce the cost.

2: Tiltable vehicle with two front wheels

20: Body

21L, 21R: Two front wheels

22: Engine speed sensor

23: Speed sensor

24: Disc

25L, 25R: Front shock absorber

26: Locking device

261: Hydraulic drive unit

2610: Shell

2611: First Motor

2612: Cam

2613: Roller

2614: Master Cylinder

2615: Hydraulic push rod

2616: Cam Position Sensor

2617: Lid

2618: Blocker

262: First Tilt Mechanism Locking Device

263: Fork Travel Lockout

264:Second tilt mechanism locking device

2641: Caliper

265: Second Motor

27: Tilt Mechanism

28: Controller

280: Micro Control Unit (MCU)

281: first current sensor

282: The first motor drive circuit

283: Second current sensor

284: Second motor drive circuit

291: Main switch

292: Lock switch

293: Unlock switch

30~332: Steps

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a schematic diagram illustrating a conventional tilt locking mechanism for a tricycle with two front wheels; FIG. 2 is a A perspective view illustrating some components of the tilt locking mechanism in FIG. 1; FIG. 3 is a perspective view illustrating some components of a first embodiment of a tiltable vehicle having two front wheels according to the present invention; 4 is a functional block diagram illustrating the locking device, the controller, the engine speed sensor, the vehicle speed sensor, the main switch, the locking switch, and the unlocking switch in the first embodiment; FIG. 5 is a side view, Illustrate the hydraulic drive device in the first embodiment; FIG. 6 is a cross-sectional view illustrating the hydraulic drive device; FIG. 7 is a side view illustrating that a stopper is provided on the inner surface of the cover of the hydraulic drive device; Fig. 8 is a side view illustrating the rotation of the cam of the hydraulic drive device to the zero position; Fig. 9 is a side view illustrating the rotation of the cam to the unlocked position; Fig. 10 is a side view illustrating the rotation of the cam to the locked position; FIG. 11 is a flow chart illustrating a tilt-lock control scenario for a tiltable vehicle with two front wheels according to the present invention; FIG. 12 is a perspective view illustrating some elements of a second embodiment of the tiltable vehicle with two front wheels according to the present invention; and FIG. 13 is a functional block diagram illustrating a locking device, a controller, an engine speed sensor, a vehicle speed sensor, a main switch, a lock switch, and an unlock switch in the second embodiment.

3 and 4, the first embodiment of the tiltable vehicle 2 with two front wheels of the present invention includes a vehicle body 20, two front wheels 21L, 21R, a tilting mechanism 27, a pair of Front shock absorbers 25L, 25R, a locking device 26 , an engine speed sensor 22 , a vehicle speed sensor 23 , a main switch 291 , a lock switch 292 , an unlock switch 293 , and a controller 28 . The engine speed sensor 22 , the vehicle speed sensor 23 , the main switch 291 , the lock switch 292 and the unlock switch 293 are all electrically connected to the controller 28 . In the first embodiment, the engine speed sensor 22 is used for sensing an engine speed, and the engine speed is directly transmitted to the controller 28; and the vehicle speed sensor 23 is used for sensing a vehicle speed, And the vehicle speed is directly transmitted to the controller 28 . It should be specially mentioned that, in the modification of the first embodiment, the engine speed sensor 22 can first transmit the engine speed to an engine control unit (ECU, not shown), and then the engine control unit The engine speed is transmitted to the controller 28 through the communication interface; and the vehicle speed sensor 23 can first transmit the vehicle speed to an anti-lock braking system (ABS, not shown), and then the anti-lock braking system The vehicle speed is transmitted to the controller 28 through a communication interface; wherein, the communication interface may be, for example, a controller area network (CAN) bus or the like.

The front wheels 21L and 21R are provided on the front side of the vehicle body 20 and are arranged side by side.

The tilt mechanism 27 and the pair of front shock absorbers 25L, 25R are disposed between the vehicle body 20 and the front wheels 21L, 21R, and are used to support the front wheels 21L, 21R, so that the front wheels 21L, 21R can be relative to the front wheels 21L, 21R The vehicle body 20 moves up and down.

The locking device 26 is used for locking or unlocking the tilt mechanism 27 and the pair of front shock absorbers 25L, 25R, so as to restrict the up and down movement of the front wheels 21L, 21R, or release the restriction. In this first embodiment, the locking device 26 includes a corresponding The tilt mechanism 27 includes a first tilt mechanism locking device 262 , a pair of front fork travel locking devices 263 corresponding to the pair of front shock absorbers 25L and 25R, and a hydraulic drive device 261 .

4 to 8, the hydraulic driving device 261 is used for simultaneously driving the first tilt mechanism locking device 262 and the front fork travel locking device 263 to lock or unlock, and has a housing 2610, a cover 2617, A first motor 2611 that can be driven by the controller 28, a cam 2612 that is driven by the first motor 2611 to rotate eccentrically, a cam 2612 that rolls in contact with the cam 2612 and is driven by the cam 2612 to translate within a working stroke The roller 2613, a master cylinder 2614, a hydraulic push rod 2615, and a cam position sensor 2616 for sensing a rotation angle of the cam 2612. The housing 2610 accommodates the cam 2612 , the roller 2613 and the hydraulic push rod 2615 and other components.

The two ends of the hydraulic push rod 2615 are pivotally connected to the roller 2613 and extend into the master cylinder 2614 respectively. When the roller 2613 translates in the working stroke, it can drive the hydraulic push rod 2615 relative to the master cylinder The 2614 translates over this working stroke to build up or release oil pressure.

In the first embodiment, the cover 2617 is detachably covered on the casing 2610, and a blocking block 2618 is provided on the inner surface.

The main technical feature of the tiltable vehicle 2 with two front wheels of the present invention is that when the lock switch 292 is pressed by the user, the controller 28 can adjust the engine according to the The rotational speed and the vehicle speed are used to determine whether to control the locking device 26 to switch from an unlocked state to a locked state.

In the first embodiment, the controller 28 includes a first current sensor 281 for sensing a first current value flowing through the first motor 2611 , a first current sensor 281 for driving the first motor 2611 to run A motor driving circuit 282 and a microcontroller unit (MCU) 280 electrically connected to the first current sensor 281 , the first motor driving circuit 282 and the cam position sensor 2616 .

4, 6, 8, 9, and 10, in the first embodiment, the rotation angle of the cam 2612 corresponding to zero oil pressure of the master cylinder 2614 is defined to be about 0° and a zero point position (as shown in FIG. 8 ), when the rotation angle is about 60°, it is an unlocked position corresponding to the unlocked state (as shown in FIG. 9 ) and the master cylinder 2614 has some slight oil pressure, and the rotation angle is about 120° is a locking position corresponding to the locking state (as shown in Figure 10).

In the first embodiment, when the controller 28 determines to control the locking device 26 to switch from the unlocked state to the locked state, it controls the first motor 2611 to rotate forward to make the cam 2612 move from the unlocked position Rotate to the locked position, and when the first current sensor 281 senses that the first current value is greater than a first current threshold value, it means that the first motor 2611 is locked and the locking device 26 has been switched to this locked state.

With the cam 2612 in the unlocked position, if the user closes When the main switch 291 (Key OFF), the controller 28 controls the first motor 2611 to reverse until the rotation angle of the cam 2612 is less than 3°, indicating that the cam 2612 is reset to zero, or because the cam 2612 is blocked by the oil When the blocking block 2618 of the cover 2617 of the pressure driving device 261 is blocked and the first current sensor 281 senses that the first current value is greater than the first current threshold value, it can also indicate that the cam 2612 is reset to zero. . In addition, when the cam 2612 is in the locking position, no matter the main switch 291 is turned off or turned on (Key ON), the cam 2612 remains in the locking position.

Referring to FIG. 4 and FIG. 11 , the tilt lock control scenarios of the tiltable vehicle 2 with two front wheels of the present invention are shown. As shown in step 30 in FIG. 11 , first, the user turns on the main switch 291 to make the entire vehicle power supply of the tiltable vehicle 2 with two front wheels turned on (Key ON).

As shown in step 310 , the controller 28 determines that the engine speed is within a first engine speed range representing the engine is stationary, wherein, in the first embodiment, the first engine speed range is below 900 rpm. Next, as shown in step 311, the controller 28 determines that the vehicle speed is less than a first vehicle speed, and the lock switch 292 is pressed by the user, wherein, in the first embodiment, the first vehicle speed is 10km/hr . Then, as shown in step 312, the controller 28 controls the locking device 26 to switch to the locked state. Then, as shown in step 313, the user presses the unlock switch 293, and then as shown in step 314, the controller 28 controls the locking device 26 to switch to the unlocked state.

As shown in step 320, the controller 28 determines that the engine speed is within a second engine speed range representing the engine idle speed (Idle). Among them, the second engine speed range is 900rpm to 3000rpm. Next, as shown in step 321, the controller 28 determines that the lock switch 292 is pressed, the engine speed is less than a continuously variable transmission (CVT) disengagement speed, and the vehicle speed is less than the first vehicle speed, wherein in this In the first embodiment, the disengagement speed of the continuously variable automatic transmission is 2000 rpm. Then, as shown in step 322, the controller 28 controls the locking device 26 to switch to the locked state, and then, as shown in step 323, the user presses the unlock switch 293, then as shown in step 324, the controller 28 controls the locking device 26 to switch to the unlocked state. Alternatively, as shown in step 325, when the engine speed is within the second engine speed range and the locking device 26 is in the locked state, the controller 28 determines that the engine speed is increased to be greater than a continuously variable automatic transmission combined speed , and the vehicle speed is greater than a second vehicle speed, wherein, in the first embodiment, the combined speed of the continuously variable automatic transmission is 2200rpm, and the second vehicle speed is 2km/hr, then as shown in step 326, the controller 28 controls the locking device 26 to automatically switch to the unlocked state.

As shown in step 330, the controller 28 determines that the engine speed is within a third engine speed range representing the riding of the vehicle, wherein, in the first embodiment, the third engine speed range is above 3000rpm. Then, as shown in step 331, if the controller 28 determines that the locking device 26 is in the unlocked state, then disables the locking switch 292, or if the controller 28 determines that the locking device 26 is in the locked state, controls The locking device 26 automatically switches to the unlocked state.

Referring to Figures 12 and 13, the first embodiment of the tiltable vehicle 2 having two front wheels of the present invention The main difference between the second embodiment and the above-mentioned first embodiment is that, in the second embodiment, the tiltable vehicle 2 with two front wheels further includes a disc 24 fixed on the tilting mechanism 27, And the hydraulic driving device 261 is only used to drive the front fork stroke locking device 263 to lock or unlock, so the locking device 26 does not include the first tilt mechanism locking device 262 in the first embodiment, but It also includes a second motor 265 and a second tilt mechanism locking device 264 corresponding to the tilt mechanism 27 . Wherein, the second tilt mechanism locking device 264 has a caliper 2641, and components such as a gear set, a pusher, etc., which are not shown in the drawings. When the second motor 265 rotates, it can drive the gear set and the pusher in sequence, so as to drive the caliper 2641 to releasably clamp the disc 24 .

In addition, in the second embodiment, the controller 28 further includes a second current sensor 283 for sensing a second current value flowing through the second motor 265, and a second motor driving circuit 284. When the controller 28 determines to control the second tilt mechanism locking device 264 to switch from the unlocked state to the locked state, the second motor driving circuit 284 is used to drive the second motor 265 to rotate forward to drive the caliper 2641 Clamp the disc 25 until the second current sensor 283 senses that the second current value is greater than a second current threshold value, indicating that the second motor 265 has been rotated forward to a stall, and the second The tilt mechanism locking device 264 has been switched to this locked state. Conversely, when the controller 28 determines to control the second tilt mechanism locking device 264 to switch from the locked state to the unlocked state, the second motor driving circuit 284 is used to drive the second motor 265 is reversed until the second current sensor 283 senses that the second current value is less than a third current threshold value, indicating that the caliper 2641 has released the disc 25, and the second tilt mechanism locks the device 264 has transitioned to the unlocked state, wherein the third current threshold is less than the second current threshold.

To sum up, the tiltable vehicle 2 with two front wheels of the present invention has at least the following advantages and effects: (1) When the user presses the lock switch 292, the controller 28 can determine the engine speed and the vehicle speed according to the Whether to control the locking device 26 to switch from the unlocked state to the locked state; (2) When the tiltable vehicle 2 with two front wheels is locked and the engine speed is increased to a riding state higher than 3000rpm, the controller 28 Controlling the locking device 26 to automatically unlock can avoid system malfunction caused by the failure of the vehicle speed sensor 23; (3) the unlocking position of the cam 2612 helps to shorten the locking and unlocking time; (4) if the user Turn off the main switch 291 (Key OFF), then the controller 28 controls the first motor 2611 to reverse until the cam 2612 is reset to zero, so that the oil pressure is zero, so as to facilitate maintenance and replacement of the oil pressure drive device 261; ( 5) If the main switch 291 is turned on (Key ON) when the locking device 26 is in the locked state, the first motor 2611 and the cam 2612 remain stationary, or if the main switch 291 is in the locking device 26 If it is not opened in the locked state, the first motor 2611 and the cam 2612 are rotated to the unlocked position, which can help shorten the working stroke and shorten the driving time; (6) The hydraulic driving device 261 passes through the cam 2612 and other components to directly drive the master cylinder 2614, which can ensure the miniaturization of the mechanism and reduce the cost; object of the present invention.

However, the above are only examples of the present invention, and should not limit the scope of implementation of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the patent specification are still included in the scope of the present invention. within the scope of the invention patent.

22…Engine Speed Sensor 23… Speed sensor 26…..locking device 261….Hydraulic drive 2611…First Motor 2612…Cam 2613…Roller 2614…Master Cylinder 2615…Hydraulic push rod 2616…Cam Position Sensor 262….First tilt mechanism locking device 263….Fork travel lock 28.....Controller 280….Micro Control Unit (MCU) 281….first current sensor 282….First motor drive circuit 291….Main switch 292….lock switch 293….Unlock switch

Claims (21)

A tiltable vehicle with two front wheels, comprising: a vehicle body; two front wheels, arranged on the front side of the vehicle body and side by side; a tilt mechanism and a pair of front shock absorbers, arranged between the vehicle body and the front wheels , and is used to support the front wheels so that the front wheels can move up and down relative to the vehicle body; a locking device is used to lock the tilt mechanism and the pair of front shock absorbers or unlock them to restrict the front wheels from moving up and down move or release the restriction; an engine speed sensor for sensing an engine speed; a vehicle speed sensor for sensing a vehicle speed; a lock switch; an unlock switch; and a controller with the engine speed The sensor, the vehicle speed sensor, the locking switch and the unlocking switch are electrically connected, wherein when the locking switch is pressed, the controller determines whether to control the locking device to automatically An unlocked state is converted to a locked state. When the engine speed is within a first engine speed range representing that the engine is stationary, the vehicle speed is less than a first vehicle speed, and the lock switch is pressed, the controller controls the The locking device is switched to the locking state, and then when the unlocking switch is pressed, the controller controls the locking device to switch to the unlocking state. The tiltable vehicle with two front wheels as claimed in claim 1, wherein the locking device comprises a first tilting mechanism locking device corresponding to the tilting mechanism, a pair of front forks corresponding to the pair of front shock absorbers stroke locking device, and a hydraulic drive device, wherein the hydraulic drive device is used for simultaneously driving the first tilt mechanism locking device and the pair of front fork stroke locking devices to lock or unlock. The tiltable vehicle with two front wheels as claimed in claim 2, wherein the hydraulic drive device has a first motor that can be driven by the controller, a cam that is driven by the first motor to rotate eccentrically, and a The cam is in rolling contact and is driven by the cam to be able to translate within a working stroke, a roller, a master cylinder, and a hydraulic push rod. Both ends of the hydraulic push rod are pivotally connected to the roller and extend into the total In the pump, when the roller translates within the working stroke, it can drive the hydraulic push rod to translate relative to the master cylinder within the working stroke to build up or release oil pressure. The tiltable vehicle with two front wheels as claimed in claim 3, wherein the hydraulic drive device further has a cam position sensor for sensing a rotation angle of the cam, which defines that the oil pressure of the master cylinder is zero. The corresponding rotation angle is about 0° and is a zero point position. When the rotation angle is about 60°, it is an unlocked position corresponding to the unlocked state and the master pump has a little oil pressure, and the rotation angle is about 120°. ° is a locked position corresponding to the locked state. The tiltable vehicle with two front wheels as claimed in claim 4, wherein the controller includes a first current sensor for sensing a first current value flowing through the first motor, when the controller When it is determined that the locking device is to be controlled to switch from the unlocked state to the locked state, the first motor is controlled to rotate forward, so that the cam rotates from the unlocked position to the locked position, and when the first current sensor senses When it is detected that the first current value is greater than a first current threshold value, it means that the first motor has been locked, and the locking device has been switched to the locked state. The tiltable vehicle with two front wheels as claimed in claim 5, further comprising a main switch electrically connected to the controller, wherein the hydraulic drive device further has a cam, the roller and the hydraulic push rod for accommodating the cam, the roller and the hydraulic push rod The casing and a cover detachably covered on the casing, the inner surface of the cover is provided with a blocking block, when the cam is in the unlocked position, if the main switch is closed, then The controller controls the first motor to reverse until the rotation angle of the cam is less than 3°, indicating that the cam is reset to zero, or the first current sensor senses the first current sensor because the cam is blocked by the blocking block. When a current value is greater than the first current threshold value, it can also indicate that the cam is reset to zero. The tiltable vehicle with two front wheels as claimed in claim 6, wherein when the cam is in the locked position, the cam remains in the locked position regardless of whether the main switch is turned off or turned on. The tiltable vehicle with two front wheels as claimed in claim 1, wherein the first engine speed range is below 900 rpm, and the first vehicle speed is 10 km/hr. The tiltable vehicle with two front wheels as claimed in claim 1, when the engine speed is within a second engine speed range representing the engine idle speed and less than the disengagement speed of a continuously variable automatic transmission, and the vehicle speed is less than the first vehicle speed , and when the locking switch is pressed, the controller controls the locking device to switch to the locked state, and then when the unlocking switch is pressed, the controller controls the locking device to switch to the unlocked state. The tiltable vehicle with two front wheels as claimed in claim 9, wherein the second engine speed range is 900rpm to 3000rpm, the CVT disengagement speed is 2000rpm, and the first vehicle speed is 10km/hr. The tiltable vehicle with two front wheels as claimed in claim 9, when the engine speed is within the second engine speed range and the locking device is in the locked state, when the engine speed is increased to be greater than a continuously variable automatic transmission Combined with the rotational speed, when the vehicle speed is greater than a second vehicle speed, the controller controls the locking device to automatically switch to the unlocked state. The tiltable vehicle with two front wheels as claimed in claim 11, wherein the combined speed of the continuously variable automatic transmission is 2200 rpm, and the second vehicle speed is 2 km/hr. The tiltable vehicle with two front wheels as claimed in claim 11, when the engine speed is within a third engine speed range representing the riding of the vehicle, if the locking device is in the unlocked state, the controller controls The locking switch fails, and if the locking device is in the locked state, the controller controls the locking device to automatically switch to the unlocked state. The tiltable vehicle with two front wheels according to claim 13, wherein the third engine speed range is 3000 rpm or more. The tiltable vehicle with two front wheels as claimed in claim 1, wherein the engine speed sensor first transmits the engine speed to an engine control unit, and then the engine control unit transmits the engine speed to an engine control unit through a communication interface the controller. The tiltable vehicle with two front wheels as claimed in claim 1, wherein the vehicle speed sensor first transmits the vehicle speed to an anti-lock braking system, and then the anti-lock braking system transmits the vehicle speed through a communication interface to the controller. The tiltable vehicle with two front wheels as claimed in claim 1, further comprising a disc fixed on the tilting mechanism, the locking device comprising a corresponding The tilting mechanism has a second tilting mechanism locking device with a caliper, a pair of front fork travel locking devices corresponding to the pair of front shock absorbers, and a hydraulic drive device, wherein one of the second tilting mechanism locking devices The caliper is used for releasably clamping the disc, and the hydraulic driving device is used for driving the pair of front fork stroke locking devices to lock or unlock. The tiltable vehicle with two front wheels as claimed in claim 17, wherein the hydraulic drive device has a first motor that can be driven by the controller, a cam that is driven by the first motor to rotate eccentrically, and a The cam is in rolling contact and is driven by the cam to be able to translate within a working stroke, a roller, a master cylinder, and a hydraulic push rod. Both ends of the hydraulic push rod are pivotally connected to the roller and extend into the total In the pump, when the roller translates within the working stroke, it can drive the hydraulic push rod to translate relative to the master cylinder within the working stroke to build up or release oil pressure. The tiltable vehicle with two front wheels as claimed in claim 18, wherein the hydraulic drive device further has a cam position sensor that senses a rotation angle of the cam, and defines that the oil pressure of the master cylinder is zero. The corresponding rotation angle is about 0° and is a zero point position. When the rotation angle is about 60°, it is an unlocked position corresponding to the unlocked state and the master pump has a little oil pressure, and the rotation angle is about 120°. ° is a locked position corresponding to the locked state. The tiltable vehicle having two front wheels as claimed in claim 19, wherein the controller includes a first current sensor for sensing a first current value flowing through the first motor, when the controller When it is determined that the front fork stroke locking device is to be controlled to switch from the unlocked state to the locked state, the first motor is controlled to rotate forward, so that the cam rotates from the unlocked position to the locked position, And when the first current sensor senses that the first current value is greater than a first current threshold value, it means that the first motor is locked, and the front fork stroke locking device has been switched to the locked state. The tiltable vehicle with two front wheels of claim 17, wherein the locking device further includes a second motor drivable by the controller, the controller including a sensor for sensing flow through the second motor A second current sensor with a second current value, the controller can drive the second motor to rotate forward to drive the caliper to clamp the disc until the second current sensor senses the second current When the value is greater than a second current threshold value, it indicates that the second motor has been rotated forwardly to a locked-rotor, and the locking device of the second tilting mechanism has been switched to the locked state, and then the controller can drive the second motor to reverse rotation, Until the second current sensor senses that the second current value is less than a third current threshold value, it indicates that the caliper has released the disc, and the second tilt mechanism locking device has been switched to the unlocked state, Wherein, the third current threshold is smaller than the second current threshold.

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